JP4241564B2 - Design data generation system, design data generation method, design data generation program - Google Patents

Description

  The present invention relates to a design data generation system, a design data generation method, a design data generation program, and more particularly to generation of design data for a new article shape by performing shape deformation processing on an already designed article shape.

  There is a method of performing a new design of an article shape by deformation based on design data of an existing article shape. For example, Patent Document 1 discloses a method of designing a new article shape by basic modeling operations such as extrusion, sweeping, rotation, and cutting based on the cross-sectional shape of a part designed in the past. According to this design method, it is possible to reduce the period, process, cost and the like required for designing, compared with a method of designing from scratch.

JP-A-11-45352

  For example, there is a case where a new article shape is designed by deforming an existing article shape having a track record for each surface. In such a case, if a certain surface is deformed into a desired shape, a gap or an intersection may be formed between the deformed surface and the adjacent surface adjacent to the deformed surface. In the design shape of an article, gaps and intersections between surfaces are inappropriate shapes, and in order to eliminate these inappropriate shapes, designers must identify gaps and intersections between surfaces one by one. The correction to be solved was performed by CAD operation. The work for such correction requires more labor as the shape of the design object becomes more complicated, and has become an obstacle to shortening the design period and reducing the design cost.

  Therefore, the present invention utilizes a design data of an already designed article shape, and a design data generation system, a design data generation method, and a design data generation method capable of automatically correcting a shape deformed by a designer's instruction, and A design data generation program is provided.

The design data generation system of the reference example is a design data generation system that generates design data of a new shape by performing deformation processing on the design data of the shape of the article, and inputs the design data that defines the shape of the article. A design data acquisition unit to be acquired according to the input, a deformation instruction acquisition unit to acquire a deformation instruction for the surface constituting the article shape based on the acquired design data in response to an input, and the response to the acquired deformation instruction. A calculation unit that performs a deformation process on the design data, wherein the deformation instruction acquisition unit acquires a deformation surface specification that specifies a deformation surface and a deformation instruction for the deformation surface as a deformation instruction, and the calculation unit includes: (1) boundary node providing means for providing boundary nodes at predetermined intervals on a boundary line between the deformed surface and an adjacent surface adjacent to the deformed surface; and (2) the deformed surface in front Deformation means for deforming in response to a deformation instruction; (3) a boundary node corresponding point deriving means on the deformation surface for respectively obtaining a boundary node corresponding point on the deformation surface corresponding to the boundary node on the deformed surface after the deformation; (4) connection surface generating means for generating a connection surface defined by a series of lines respectively connecting the boundary node of the adjacent surface and the boundary node corresponding point on the deformation surface corresponding to the boundary node; And the design data of the new shape comprised including the said deformation | transformation surface and the said connection surface after the said deformation | transformation are produced | generated.

Further, according to one aspect of the present invention, a design data acquisition unit that acquires design data that defines an article shape according to an input instruction, and a deformation of a surface that constitutes the article shape based on the acquired design data A deformation instruction acquisition unit that acquires an instruction according to an input; and an arithmetic unit that performs a deformation process on the design data according to the acquired deformation instruction, wherein the deformation instruction acquisition unit specifies a deformation surface. A surface designation and a deformation instruction for the deformation surface are acquired as a deformation instruction, and the calculation unit (1) includes boundary nodes at predetermined intervals on a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface. (2) Deformation means for deforming the deformation surface according to the deformation instruction; (3) On the deformation surface boundary corresponding to the boundary node on the deformation surface after the deformation Node corresponding points (4) intersection line deriving means for obtaining a line of intersection between the infinitely extended surface of the adjacent surface and the infinitely extended surface of the deformed surface after deformation, (5) ) A boundary ridge line that extends a boundary connection ridge line that connects to the boundary line of the adjacent surface to the intersection line, the boundary line, and the intersection line to change the adjacent surface extension surface from the infinite extension surface of the adjacent surface Demarcating adjacent surface extension surface delimiting means; and (6) an intersection boundary node corresponding point deriving unit for obtaining on-intersection boundary node corresponding points corresponding to the boundary nodes on the intersection line included in the adjacent surface extension surface, respectively. (7) deformation surface connection surface generation means for generating a deformation surface connection surface defined by a series of lines respectively connecting the deformation surface boundary node corresponding points and the intersection line boundary node corresponding points, Adjacent surface, the adjacent surface extension surface, after the deformation It said deformable surface, and generates the design data of the new shape constituted including said deformable surface connecting surface.

  According to another aspect of the present invention, a design data acquisition unit that acquires design data defining an article shape in response to an input instruction, and a deformation instruction for a surface constituting the article shape based on the acquired design data A deformation instruction acquisition unit that acquires a deformation surface in response to an input, and a calculation unit that performs a deformation process on the design data in accordance with the acquired deformation instruction, wherein the deformation instruction acquisition unit specifies a deformation surface. The calculation unit acquires a designation and a deformation instruction for the deformation surface as a deformation instruction, and the calculation unit (1) sets boundary nodes at a predetermined interval on a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface. Boundary node providing means to be applied, (2) deformation means for deforming the deformation surface in accordance with the deformation instruction, and (3) a boundary node on the deformation surface corresponding to the boundary node on the deformation surface after the deformation. Corresponding point it (4) an intersection line deriving unit for obtaining an intersection line between the infinitely extended surface of the adjacent surface and the infinitely extended surface of the deformed surface after the deformation; The boundary connecting ridge line connected to the boundary line of the deformed deformed surface extends to the intersecting line, the boundary ridge line extending line, the boundary line, and the intersecting line to extend the deformed surface from the infinitely extended surface of the deformed surface. A deformed surface extension surface defining means for defining a surface; (6) an intersection boundary node corresponding point deriving means for obtaining an intersection boundary node corresponding point on the intersection line corresponding to the boundary node on the intersection line; and (7) the boundary An adjacent surface connection surface generating means for generating an adjacent surface connection surface defined by a series of lines connecting the nodes and the intersection boundary boundary node corresponding points, respectively, the adjacent surface, the deformed surface after the deformation, The deformed surface extension surface and the adjacent surface connection Generating a design data of a new shape composed include.

According to another aspect of the present invention, a design data acquisition unit that acquires design data defining an article shape in response to an input instruction, and a deformation instruction for a surface constituting the article shape based on the acquired design data A deformation instruction acquisition unit that acquires a deformation surface in response to an input, and a calculation unit that performs a deformation process on the design data in accordance with the acquired deformation instruction, wherein the deformation instruction acquisition unit specifies a deformation surface. The designation and a deformation instruction for the deformation surface are acquired as a deformation instruction, and the calculation unit (1) gives boundary line identification information to a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface. Boundary line identification information providing means, (2) deformation means for deforming the deformation surface according to the deformation instruction, and (3) the deformed deformation surface and the adjacent surface intersect, and the adjacent surface is This intersection and its extension When the line is divided into an adjacent surface protrusion area including the boundary line and an adjacent surface maintaining area not including the boundary line, the adjacent surface protrusion that erases the adjacent surface protrusion area based on the boundary line identification information An area erasing unit; and (4) an adjacent surface ridge line aligning unit that corrects the ridge line of the adjacent surface maintaining region connected to the intersection line and its extension line so as to align with the end point of the intersection line. An alignment connection adjacent surface generating means for generating an alignment connection adjacent surface defined by the corrected adjacent surface ridge line and the intersecting line in the adjacent surface maintaining region, and the deformation after the deformation A design data having a new shape including a surface and the matching connection adjacent surface, and the boundary line identification information adding unit adds boundary line end point identification information to an end point of the boundary line, and the adjacent surface Edge alignment The stage associates the boundary line end point with the intersection line end point based on the boundary line end point identification information, and connects the boundary line end point corresponding to the boundary line end point to the boundary line end point. Align the edge of the surface .

According to another aspect of the present invention, a design data acquisition unit that acquires design data defining an article shape in response to an input instruction, and a deformation instruction for a surface constituting the article shape based on the acquired design data A deformation instruction acquisition unit that acquires a deformation surface in response to an input, and a calculation unit that performs a deformation process on the design data in accordance with the acquired deformation instruction, wherein the deformation instruction acquisition unit specifies a deformation surface. The designation and a deformation instruction for the deformation surface are acquired as a deformation instruction, and the calculation unit (1) gives boundary line identification information to a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface. Boundary line identification information providing means, (2) deformation means for deforming the deformation surface according to the deformation instruction, and (3) a boundary line corresponding ridge line corresponding to the boundary line on the deformation surface after the deformation, Boundary line Ridge line deriving means corresponding to a boundary line obtained based on information; and (4) the deformed deformed surface and the adjacent surface intersect, and the deformed deformed surface is defined by the intersecting line and its extension line. A deformation surface protrusion area that erases the deformation surface protrusion area based on the boundary line identification information when divided into a deformation surface protrusion area that includes a corresponding ridge line and a deformation surface maintenance area that does not include the boundary line corresponding ridge line. Erasing means, (5) deformed surface ridge line aligning means for correcting the ridge line of the deformed surface maintaining area connected to the intersecting line and its extension line so as to align with an end point of the intersecting line, and (6) the above An alignment connection deformation surface generating means for generating an alignment connection deformation surface defined by the corrected deformation surface ridge line and the intersecting line in the deformation surface maintaining area, the adjacent surface and the alignment connection; Includes deformation surface Generates the design data of a new shape to be, the boundary line identification information addition means imparts a border node identification information to the terminal point of the boundary line, the deformable surface ridge aligning means, the boundary line node identification Based on the information, the boundary line end point is made to correspond to the intersection line end point, and the deformation surface ridge line connected to the boundary line end point is aligned with the intersection line end point corresponding to the boundary line end point .

In addition, the design data generation method of the reference example is a design data generation method for generating design data of a new shape by performing deformation processing on the design data of the shape of the article, and the design data for defining the shape of the article is A design data acquisition step acquired according to an input instruction, a deformation surface specification for specifying a deformation surface as a deformation instruction for a surface constituting the article shape based on the acquired design data, a deformation instruction for the deformation surface, A deformation instruction acquisition step for acquiring a boundary node at a predetermined interval on a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface; and A deformation step for deforming according to a deformation instruction, and a deformation for obtaining a boundary node corresponding point on the deformation surface corresponding to the boundary node on the deformation surface after the deformation A connection surface that generates a connection surface defined by a series of lines respectively connecting the boundary node corresponding point of the upper boundary node, the boundary node of the adjacent surface, and the deformed surface upper boundary node corresponding point corresponding to the boundary node Generating a design data of a new shape including the deformed surface after the deformation and the connection surface.

According to another aspect of the present invention, the design data acquisition unit acquires the design data defining the article shape according to the input instruction, and the deformation instruction acquisition unit acquires the design data A deformation instruction acquisition step for acquiring a deformation surface designation for designating a deformation surface and a deformation instruction for the deformation surface as a deformation instruction for the surface constituting the article shape based on the input, and a calculation unit, A boundary node providing step for providing boundary nodes at a predetermined interval on a boundary line between a deformed surface and an adjacent surface adjacent to the deformed surface, and a deforming step in which the arithmetic unit deforms the deformed surface according to the deformation instruction. When the calculation unit, on the deformation surface after the deformation, and the deformation plane on the boundary node corresponding point deriving step of obtaining a modified surface on a boundary node corresponding point corresponding to the boundary nodes, respectively, the operation But a boundary connecting said and infinite extension surface of the adjacent surfaces, the intersection line derivation step of finding the intersection of the infinite extension surface deforming surface after the deformation, the arithmetic unit is connected to the boundary line of said adjacent surface edge lines is not the boundary edge extension extending to said line of intersection, the boundary line, and by the line of intersection, said the abutment surface extending surface defining step of defining the abutment surface extending surface from an infinite extension plane of the adjacent surface, the arithmetic unit A step of deriving corresponding points on the intersection line boundary node corresponding to the boundary nodes on the intersection line corresponding to the boundary nodes on the intersection line included in the adjacent surface extension surface, and the computing unit includes the boundary on the deformation surface A deformed surface connecting surface generating step for generating a deformed surface connecting surface defined by a series of lines connecting the node corresponding points and the intersection boundary boundary corresponding points, respectively, and the computing unit includes the adjacent surface and the adjacent surface Extended surface, front The deformed surface after deformation, and generates the design data of the new shape constituted including said deformable surface connecting surface.

According to another aspect of the present invention, the design data acquisition unit acquires the design data defining the article shape according to the input instruction, and the deformation instruction acquisition unit acquires the design data A deformation instruction acquisition step for acquiring a deformation surface designation for designating a deformation surface and a deformation instruction for the deformation surface as a deformation instruction for the surface constituting the article shape based on the input, and a calculation unit, A boundary node providing step for providing boundary nodes at a predetermined interval on a boundary line between a deformed surface and an adjacent surface adjacent to the deformed surface, and a deforming step in which the arithmetic unit deforms the deformed surface according to the deformation instruction. When the calculation unit, on the deformation surface after the deformation, and the deformation plane on the boundary node corresponding point deriving step of obtaining a modified surface on a boundary node corresponding point corresponding to the boundary nodes, respectively, the operation But the infinite extension plane of the abutment surface, and the intersection line derivation step of finding the intersection of the infinite extension surface deforming surface after the deformation, the arithmetic unit is connected to the boundary line of the deformation surface after the deformation A boundary surface ridge line extending the boundary connection ridge line to the intersecting line, the boundary line, and a deformed surface extension surface defining step for defining a deformed surface extension surface from an infinitely extended surface of the deformed surface by the intersecting line; The computation unit is a step of deriving intersection boundary point corresponding points on the intersection line corresponding to the boundary nodes on the intersection line, and the computation unit is corresponding points on the boundary nodes and the boundary nodes on the intersection line. And an adjacent surface connecting surface generation step for generating adjacent surface connecting surfaces defined by a series of lines respectively connecting the two, and the calculation unit includes the adjacent surface, the deformed surface after the deformation, and the deformed surface extension. Surface, and said Generating a design data of a new shape composed include contact surface connection surface.

According to another aspect of the present invention, the design data acquisition unit acquires the design data defining the article shape according to the input instruction, and the deformation instruction acquisition unit acquires the design data A deformation instruction acquisition step for acquiring a deformation surface designation for designating a deformation surface and a deformation instruction for the deformation surface as a deformation instruction for the surface constituting the article shape based on the input, and a calculation unit, A boundary line identification information adding step for adding boundary line identification information to a boundary line between a deformation surface and an adjacent surface adjacent to the deformation surface, and a deformation step in which the arithmetic unit deforms the deformation surface according to the deformation instruction. When the calculation unit, the deformed surface after deformation and said adjacent surfaces intersect, it said adjacent surface, the abutment surface protrudes region including the boundary line by the line of intersection and its extension, the boundary When divided into an adjacent surface maintaining region free, based on the boundary line identification information, and the adjacent surface protrudes region erasing step of erasing said abutment surface protrudes region, the calculation unit, the intersection line and its extension connects to a line, adjacent the edge line of the abutment surface maintaining region and the adjacent surface edge line matching step of correcting to match the end points of the line of intersection, the arithmetic unit, of the adjacent surfaces maintaining region, described above correction A matching connection adjacent surface generation step for generating a matching connection adjacent surface defined by a surface ridge line and the intersection line, and the calculation unit includes the deformed surface after the deformation and the matching connection adjacent surface. generates the design data of the new shape composed comprises, in the boundary line identification information addition step, the arithmetic unit further grants border node identification information to the terminal point of the boundary line, before In the adjacent surface ridge line matching step, the calculation unit associates the boundary line end point with the intersection line end point based on the boundary line end point identification information, and the boundary line end point corresponds to the boundary line end point. The adjacent surface ridgeline connected to the line end point is aligned .

According to another aspect of the present invention, the design data acquisition unit acquires the design data defining the article shape according to the input instruction, and the deformation instruction acquisition unit acquires the design data A deformation instruction acquisition step for acquiring a deformation surface designation for designating a deformation surface and a deformation instruction for the deformation surface as a deformation instruction for the surface constituting the article shape based on the input, and a calculation unit, A boundary line identification information adding step for adding boundary line identification information to a boundary line between a deformation surface and an adjacent surface adjacent to the deformation surface, and a deformation step in which the arithmetic unit deforms the deformation surface according to the deformation instruction. When the calculation unit, a boundary line corresponding ridge which corresponds to the boundary line in the modified surface after the deformation, and border corresponding ridge derivation step of finding on the basis of the boundary line identification information, the Calculation unit, the deformed surface after deformation and said adjacent surfaces intersect, deformable surface after the deformation, and the intersection line and the modified surface projecting region including the boundary line corresponding ridge by its extension, the boundary When dividing into a deformed surface maintaining area that does not include a line-corresponding ridge line, based on the boundary line identification information, a deformed surface protrusion area erasing step for erasing the deformed surface protrusion area, and the calculation unit includes the intersection line and connected to the extension line, the ridge line of the deformed surface maintenance area, and modification surface ridge matching step of correcting to match the end points of the line of intersection, the arithmetic unit, of the deformable surface maintaining region, wherein An alignment connection deformation surface generation step for generating an alignment connection deformation surface defined by the corrected deformation surface ridge line and the intersecting line, and the calculation unit includes the adjacent surface and the alignment connection deformation surface Constitution Generates the design data of the new shape, in the boundary line identification information addition step, the arithmetic unit further grants border node identification information to the terminal point of the boundary line, in the deformed surface ridge matching step, The arithmetic unit associates the boundary line end point with the intersection line end point based on the boundary line end point identification information, and connects the boundary line end point corresponding to the boundary line end point to the boundary line end point The deformation surface ridge line is aligned .

The design data generation program of the reference example is a design data generation program for causing a computer to generate design data of a new shape by performing deformation processing on the design data of the shape of the article. Design data acquisition processing for acquiring design data that defines the shape according to an input instruction, a deformation surface specification for specifying a deformation surface as a deformation instruction for a surface constituting the article shape based on the acquired design data, and this deformation A deformation instruction acquisition process for acquiring a deformation instruction for a surface in response to an input; and a boundary node providing process for providing boundary nodes at predetermined intervals on a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface; , A deformation process for deforming the deformation surface according to the deformation instruction, and a boundary node on the deformation surface corresponding to the boundary node on the deformation surface after the deformation Boundary node corresponding point derivation processing on the deformation surface, and a connection surface defined by a series of lines connecting the boundary node of the adjacent surface and the boundary node corresponding point on the deformation surface corresponding to the boundary node, respectively And generating a design data of a new shape including the deformed surface after the deformation and the connection surface.

  According to another aspect of the present invention, a design data acquisition process for acquiring design data defining an article shape according to an input instruction, and a deformation instruction for a surface constituting the article shape based on the acquired design data As a deformation surface designation for designating a deformation surface, a deformation instruction for the deformation surface, a deformation instruction acquisition process for acquiring the deformation surface according to input, and a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface. Boundary node providing processing for adding boundary nodes at predetermined intervals, deformation processing for deforming the deformation surface in accordance with the deformation instruction, and a boundary on the deformation surface corresponding to the boundary node on the deformation surface after the deformation Boundary node corresponding point derivation process on the deformation surface for obtaining each node corresponding point, an intersection line derivation process for obtaining an intersection line between the infinitely extended surface of the adjacent surface and the infinitely extended surface of the deformed surface after the deformation, and the adjacent Said of the surface Boundary ridge line extending from the infinitely extended surface of the adjacent surface by the boundary ridge line extending from the boundary connecting ridge line connected to the field line to the intersecting line, the boundary line, and the intersecting line Processing, a boundary node corresponding point on intersection line derivation process for obtaining a corresponding boundary node on the intersection line corresponding to the boundary node on the intersection line included in the adjacent surface extension surface, and a boundary node corresponding point on the deformation surface, A deformed surface connecting surface generating process for generating a deformed surface connecting surface defined by a series of lines connecting the boundary node corresponding points on the intersection line, and causing the computer to execute the adjacent surface, the adjacent surface extension surface, and the deformation Design data having a new shape including the later deformed surface and the deformed surface connecting surface is generated.

  According to another aspect of the present invention, a design data acquisition process for acquiring design data defining an article shape according to an input instruction, and a deformation instruction for a surface constituting the article shape based on the acquired design data As a deformation surface designation for designating a deformation surface, a deformation instruction for the deformation surface, a deformation instruction acquisition process for acquiring the deformation surface according to input, and a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface. A boundary node providing process for adding boundary nodes at predetermined intervals; a deformation process for deforming the deformation surface in accordance with the deformation instruction; and a boundary on the deformation surface corresponding to the boundary node on the deformation surface after the deformation Boundary node corresponding point derivation processing on the deformation surface for obtaining each node corresponding point, intersection line derivation processing for obtaining an intersection line between the infinite extension surface of the adjacent surface and the infinite extension surface of the deformation surface after the deformation, and the deformation Later deformation A boundary ridge line extending a boundary connection ridge line connected to the boundary line to the intersection line, the boundary line, and a deformation surface that defines a deformation surface extension surface from an infinite extension surface of the deformation surface by the boundary line An extended surface demarcation process, an intersection boundary node corresponding point derivation process for obtaining an intersection boundary node corresponding point corresponding to the boundary node on the intersection line, and the boundary node and the boundary boundary corresponding point on the intersection line are respectively connected. An adjacent surface connecting surface generating process for generating an adjacent surface connecting surface defined by a series of lines, and causing the computer to execute the adjacent surface, the deformed surface after the deformation, the deformed surface extension surface, and the adjacent surface A design data having a new shape including the connection surface is generated.

According to another aspect of the present invention, a design data acquisition process for acquiring design data defining an article shape according to an input instruction, and a deformation instruction for a surface constituting the article shape based on the acquired design data As a deformation surface designation for designating a deformation surface, a deformation instruction for the deformation surface, a deformation instruction acquisition process for acquiring the deformation surface according to input, and a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface. A boundary line identification information providing process for providing boundary line identification information, a deformation process for deforming the deformed surface according to the deformation instruction, the deformed deformed surface and the adjacent surface intersect, and the adjacent surface When the intersection line and the extension line are divided into an adjacent surface protrusion area including the boundary line and an adjacent surface maintaining area not including the boundary line, the adjacent surface protrusion is performed based on the boundary line identification information. An adjacent surface protruding region erasing process for erasing the region, and an adjacent surface ridge line aligning process for correcting the ridge line of the adjacent surface maintaining area connected to the intersection line and its extension line so as to be aligned with the end point of the intersection line; , Causing the computer to execute an alignment connection adjacent surface generation process for generating an alignment connection adjacent surface defined by the corrected adjacent surface ridge line and the intersecting line in the adjacent surface maintenance region, and after the deformation Generating design data having a new shape including the deformed surface and the matching connection adjacent surface, and further adding boundary line end point identification information to the end points of the boundary line in the boundary line identification information adding process. In the adjacent surface ridge line matching process, the boundary line end point is associated with the intersection line end point based on the boundary line end point identification information, and the boundary line end point is associated with the boundary line end point. Aligning said adjacent surface ridge that was connected to the boundary line end point.

According to another aspect of the present invention, a design data acquisition process for acquiring design data defining an article shape according to an input instruction, and a deformation instruction for a surface constituting the article shape based on the acquired design data As a deformation surface designation for designating a deformation surface, a deformation instruction for the deformation surface, a deformation instruction acquisition process for acquiring the deformation surface according to input, and a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface. Boundary line identification information providing processing for providing boundary line identification information, deformation processing for deforming the deformation surface according to the deformation instruction, and a boundary line corresponding ridge line corresponding to the boundary line in the deformed surface after the deformation, The boundary line corresponding ridge line derivation process obtained based on the boundary line identification information, the deformed deformation surface and the adjacent surface intersect, and the deformed deformation surface is defined by the intersection line and its extension line. A deformation surface protrusion that erases the deformation surface protrusion area based on the boundary line identification information when divided into a deformation surface protrusion area that includes a line-corresponding ridge line and a deformation surface maintenance area that does not include the boundary line-corresponding ridge line A region erasing process, a deformed surface ridge line alignment process for correcting the ridge line of the deformed surface maintaining area connected to the intersection line and its extension line so as to align with an end point of the intersecting line; and Among them, the computer is caused to execute an alignment connection deformation surface generation process for generating an alignment connection deformation surface defined by the corrected deformation surface ridge line and the intersection line, and the adjacent surface and the alignment connection deformation surface are obtained. It generates the design data of the new shape composed comprises, in the boundary line identification information addition process, further applying a border node identification information to the terminal point of the boundary line, the deformable surface ridge In the matching process, based on the boundary line end point identification information, the boundary line end point is associated with the intersection line end point, and the boundary line end point corresponding to the boundary line end point is connected to the boundary line end point. Align deformed surface ridge lines .

  According to the present invention, the shape design of a new article can be efficiently performed by a deformation process using the shape design data of an existing article as a model.

  Hereinafter, the best mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a block diagram showing a configuration of a design data generation system 1 according to the first embodiment of the present invention. The design data generation system 1 is a design data generation system that generates design data of a new shape by performing deformation processing on design data of an existing shape of an existing product. A design data acquisition unit 3 that acquires design data to be defined according to an input instruction, a deformation instruction acquisition unit 4 that acquires a deformation instruction for a surface constituting an article shape based on the acquired design data, according to an input; The calculation unit 2 is configured to perform a deformation process on the design data in accordance with the acquired deformation instruction, and the display unit 5 displays the article shape, the deformation instruction information, the new article shape after the deformation indicated by the design data. ing.

  The design data acquisition unit 3 is a data receiving device connected by a data communication line to a database in which existing proven design data is registered, and data reading for reading design data from an information storage medium in which existing design data is registered It consists of devices. The design data generation system 1 according to the first embodiment uses the design data acquired by the design data acquisition unit 3 as design data that expresses a reference shape to be deformed. The design data acquisition unit 3 preferably includes design data selection means for selecting design data from a plurality of design data according to the designation of the designer.

  The deformation instruction acquisition unit 4 acquires information necessary for designing from a designer who designs a new article shape using the design data generation system 1. In the first embodiment, the deformation instruction, which is one of the information acquired from the designer or the like, includes a deformation surface designation for designating a deformation surface from the surfaces constituting the article shape based on the acquired design data, and this deformation. And a deformation instruction for the surface. In addition, the display unit 5 displays information to be referred to in designing a part to the designer.

  The calculation unit 2 uses the design data of the existing article shape acquired by the design data acquisition unit 3, and based on a deformation instruction from the designer for the shape based on the design data acquired by the deformation instruction acquisition unit 4, or automatically. By the process, the design data is deformed, and design data for a new article shape is generated.

  The calculation unit 2 requires modification as shape design data because the deformation instruction acquired from the designer or the like via the deformation instruction acquisition unit 4 causes a gap or intersection between the surfaces constituting the article shape. In order to eliminate these inappropriate shapes, boundary node providing means 21 for providing boundary nodes at predetermined intervals on the boundary line between the deformation surface and the adjacent surface adjacent to the deformation surface; Deformation means 22 for deforming the deformation surface according to the deformation instruction, boundary node corresponding point deriving means 23 for obtaining a boundary node corresponding point corresponding to the boundary node on the deformation surface after deformation, boundary node etc. and the boundary Connection surface generating means 24 for generating a connection surface defined by a series of lines respectively connecting boundary node corresponding points corresponding to the nodes.

  Further, the calculation unit 2 includes an intersection line deriving unit 25 for obtaining an intersection line between the infinitely extended surface of the adjacent surface and the infinitely extended surface of the deformed surface, and a boundary connection ridgeline connected to the boundary line of the adjacent surface, Boundary ridge line extended to the intersection line, boundary line, and boundary line demarcating the adjacent surface extension surface from the infinite extension surface of the adjacent surface, or connecting to the boundary line corresponding ridge line of the deformed surface after deformation A boundary ridge line extending to the intersection line, a boundary line, and an extension surface defining means for defining the deformation surface extension surface from the infinite extension surface of the deformation surface by the connection line.

  Further, the calculation unit 2 includes a boundary line identification information providing unit 27 that provides boundary line identification information to the boundary line between the deformed surface and the adjacent surface, and a boundary line corresponding ridge line corresponding to the boundary line on the deformed surface after deformation, The boundary line corresponding ridge line deriving means 28 obtained based on the boundary line identification information, the deformed deformation surface and the adjacent surface intersect, and the adjacent surface protrudes into the adjacent surface including the boundary line by this intersection line and its extension line And the adjacent surface maintaining region that does not include the boundary line, the adjacent surface protrusion region is deleted based on the boundary line identification information, and the deformed surface after deformation and the adjacent surface intersect to deform. When the later deformed surface is divided into a deformed surface protruding region including the boundary line-corresponding ridge line and a deformed surface maintaining region not including the boundary line-corresponding ridge line by this intersection line and its extension line, based on the boundary line identification information The deformation surface protrusion area The protruding area erasing means 29 to leave, the ridge line of the adjacent surface maintaining area connected to the intersection line and its extension line is corrected so as to be aligned with the end point of the intersection line, and the deformation is connected to the intersection line and its ridge line. The ridge line alignment means 30 for correcting the ridge line of the surface maintenance area so as to align with the end point of the intersection line, and the alignment connection adjacent surface defined by the corrected adjacent surface ridge line and the intersection line in the adjacent surface maintenance area In the deformed surface maintaining region, there is provided a matching connection surface generating means 31 for generating a matching connection deformed surface defined by the corrected deformed surface ridge line and the intersection line.

  FIG. 2 is a block diagram showing an example of a hardware configuration used in the design data generation system 1 shown in FIG. Calculation of design data in the calculation unit 2 in the design data generation system 1 shown in FIG. 1, reading of design data from a design data database or the like in the design data acquisition unit 3, deformation input by a designer or the like in the deformation instruction acquisition unit 4 Software processing functions such as instruction acquisition, display instruction on the display unit 5, and processing corresponding to each step in the part shape design method performed by the design data generation system 1 are performed by designing the part shape into a computer. Realized by a program for execution. These software processing functions are performed by the CPU 10, for example, by executing an article shape design data generation program in the hardware configuration shown in FIG.

  The CPU 10 is connected to a ROM 11 that stores software programs necessary for processing operations of the design data generation system 1 and a RAM 12 that temporarily stores data during program execution. The CPU 10 is connected to a storage device 13 such as a hard disk. For example, the storage device 13 is used as a design database that stores design data acquired by the design data acquisition unit 3.

  The design data generation system 1 is configured by connecting the input device 14 corresponding to the deformation instruction acquisition unit 4 in FIG. 1 and the display device 15 corresponding to the display unit 5 to the CPU 10 and the like. ing. As the input device 14, for example, a pointing device such as a mouse or a keyboard is used. Moreover, as the display device 15, for example, a CRT display, a liquid crystal display, or the like is used. In addition, when it is necessary to exchange design data or the like with an external device used by another designer or the like, a communication I / F 16 is provided for connection with the external device.

  Further, the design program for causing the CPU 10 to execute the operation on the design data can be recorded on a computer-readable recording medium and distributed. In such a recording medium, for example, a magnetic medium such as a hard disk and a floppy (registered trademark) disk, an optical medium such as a CD-ROM and a DVD-ROM, or a specially arranged to execute or store program instructions. For example, hardware devices such as RAM, ROM, and semiconductor nonvolatile memory are included. Further, a recording medium reading drive (such as a floppy (registered trademark) disk drive) for reading a program or the like from such a recording medium can be connected to the CPU 10.

  FIG. 3 is a flowchart schematically showing an example of the design data generation method according to the first embodiment of the present invention. A new article shape design data generation method will be described below with reference to the configuration of the design data generation system 1 shown in FIG.

  Here, as an object to be designed, a part that needs to express a plane constituting the shape of the article as a gradient plane is taken as an example. The expression of the component surface constituting the shape of the article by the gradient surface is used when designing a solid part such as a resin molded part and a bead shape and a seat shape of a sheet metal part. For example, the slope A1 surface of the part A shown in FIG. 4 defines the reference line BL1 that defines one ridgeline of the outer edge of this surface, and the direction in which the mold is pulled out when the part A is molded by the mold. A surface defined by an outer edge line EL1 opposed to the reference line BL1 and a part of a gradient surface determined by a drawing direction V vector and a gradient angle θ that defines an inclination angle of the surface with respect to the drawing direction V vector. It is. In this way, when a new article that needs to be expressed by a gradient surface is designed, the shape of the design data expressed by the gradient surface is used as a reference shape for deformation.

  First, the deformation instruction acquisition unit 4 acquires a design start instruction from a designer or the like, and the design of a new article is started (S100). The deformation instruction acquisition unit 4 that has acquired the start instruction for the new article design transmits the acquired input information to the calculation unit 2. The calculation unit 2 that has acquired this input information activates the design data generation program registered in the ROM 11 and displays on the display unit 5 a prompt for acquiring the existing design data that is the basis of the new design. For example, this display includes a list of article names corresponding to existing design data of various articles registered in a design database, an information storage medium or the like connected to the design data generation system 1. In this design database or the like, design data is registered in advance together with information normalized so that it can be searched from the article name, keyword, feature, and the like. The transformation instruction acquisition unit 4 acquires an article name selection input for selecting an article name to be newly designed from an article name list of the registered design data from a designer or the like. The acquisition of the article name selection input is performed by the deformation instruction acquisition unit 4 acquiring an input of an article name, a keyword, a feature, and the like from a designer or the like, and the calculation unit 2 from the article name registered in advance in the storage device 13 or the like. The article name to be searched may be retrieved and read.

  When the design target article name is acquired from a designer or the like, the calculation unit 2 reads data of similar related articles that can match or become a reference shape with the design target article from the design database, and the design model number, feature, A list such as a simple display of the shape indicated by the design data is displayed on the display unit 5.

  Next, the deformation instruction acquisition unit 4 acquires an input for selecting desired design data from a list of the design data from a designer or the like. This design data selection input information is sent from the deformation instruction acquisition unit 4 to the design data acquisition unit 3. The design data acquisition unit 3 reads out and acquires the corresponding design data from the design database, information storage medium, etc. connected to the design data generation system 1 based on the selected input information of the design data (S102), and the RAM 12 Alternatively, it is temporarily stored in the storage device 13. The calculation unit 2 performs image signal processing on the acquired design data, and causes the display unit 5 to display an image of the shape represented by the design data. For example, when the design data acquisition unit 3 reads design data indicating the component A from a design database, an information storage medium, etc., the shape of the component A is displayed on the display unit 5 as shown in FIG.

  Hereinafter, a method for generating new design data will be described using the shape of the part A as an example of the reference shape. The shape of this part A is defined by the defined slope planes A1, A2, A3, A4, A5 and A6.

  For example, the A1 plane is a defined gradient plane that is trimmed from the gradient plane expressed by the reference line BL1, the drawing direction V, and the gradient angle θ. This trimming is defined by a reference line BL1 and an outer edge line EL1 facing the reference line BL1. The design data of this part A may be composed of data that directly defines the reference line, the drawing direction, the gradient angle, and the outer edge line opposite to the outer edge line, and these defined gradient surfaces are divided into meshes at predetermined intervals. Alternatively, it may be data of a set of coordinates of a mesh node group assigned to an intersection of the meshes.

  Next, the deformation instruction acquisition unit 4 acquires a deformation instruction for deforming the shape of the part A from a designer or the like (S104).

  Next, an example of this deformation instruction will be specifically described. First, the deformation instruction acquisition unit 4 changes a deformation reference line that is at least a part of a reference line of at least one defined gradient surface from the six defined gradient surfaces constituting the part A, and a deformation that faces the deformation reference line. A deformed surface designation for designating a deformed surface defined by the surface outer edge line is acquired from a designer or the like. The deformation instruction acquisition unit 4 transmits the deformation surface designation to the calculation unit 2. Here, a case where the A1 surface is selected as the deformation surface, that is, a case where all of the reference line BL1 is specified as the deformation reference line and the outer edge line EL1 of the A1 surface is specified as the deformation surface outer edge line will be described as an example. . Acquisition of the input of this deformation surface is performed, for example, by double-clicking the mouse with the pointer placed on the A1 surface in the shape display of the component A displayed on the display unit 5. When this deformation plane designation information is acquired, for example, the calculation unit 2 performs image signal processing on the design data and displays the A1 plane which is the deformation plane in a color different from the other five planes for easy identification. 5 is displayed. Further, the calculation unit 2 displays the reference line of the A1 plane on the display unit 5 on the basis of the design data of the part A so that the reference line of the A1 plane can be easily identified. Is displayed.

  Here, it is assumed that the deformation surface is the entire A1 surface, but it is also possible to acquire designation for designating only a partial region of the A1 surface as the deformation surface. In that case, the deformation instruction obtaining unit 4 first obtains an instruction for designating at least a part of the reference line on the A1 plane as a deformation reference line from the designer or the like. For example, in the display of the shape of the part A displayed on the display unit 5, the designation input is acquired by clicking the mouse in a state where the pointer is placed at a desired start point on the reference line on the A1 plane, and then on the reference line. This is done by clicking the mouse with the pointer placed at the desired end point. The acquisition of the designated input of the start point and the end point may be acquired directly from a keyboard or the like. Next, the deformation instruction acquisition unit 4 acquires an input for designating a deformation surface outer edge line that is on the A1 surface and faces the specified deformation reference line from a designer or the like. For example, the input for designating the outer edge line of the deformed surface can be obtained based on the locus of the movement of the mouse while the pointer is placed on the A1 surface in the shape display of the component A displayed on the display unit 5. it can. When the function of the deformed surface edge line and its start and end points are known in advance, these inputs may be obtained from a keyboard or the like. The deformation surface is specified by specifying the deformation reference line and the deformation surface outer edge line.

  Next, the deformation instruction acquisition unit 4 acquires a deformation instruction for deforming the A1 surface, which is a deformation surface, into a desired surface shape from a designer or the like. In order to obtain a new gradient surface defined by a new reference line, a new extraction direction, and a new gradient angle, there are (1) deformation There are three types of deformation: gradient surface deformation by changing the reference line, (2) gradient surface deformation by changing the drawing direction, and (3) gradient surface deformation by changing the gradient angle. The deformation instruction acquisition unit 4 acquires a deformation instruction including at least one deformation instruction aspect among the three types of deformation instruction aspects from a designer or the like. Next, these three types of modification instruction modes will be described.

(1) Deformation reference line change instruction As shown in FIG. 5, the change of the gradient plane by changing the deformation reference line refers to the reference line BL1 of the A1 plane acquired by the deformation instruction acquisition unit 4 from the designer or the like as a deformation reference. As the line BL1, it means a change of the slope surface by an instruction to change the deformation reference line BL1 to a new reference line BL1a. That is, a new reference line BL1a, a drawing direction V, and a gradient angle are obtained in accordance with an instruction that the deformation instruction acquisition unit 4 has acquired from the designer or the like a gradient surface defined by the deformation reference line BL1, the drawing direction V, and the gradient angle θ. Deformation to a new slope plane A1a defined by θ.

  First, the deformation instruction acquisition unit 4 refers to the shape of the deformation target area A1 surface displayed on the display unit 5 by the designer or the like, and among the three types of deformation modes, the gradient surface obtained by changing the deformation reference line. An input for selecting a deformation is acquired, and the acquired input information is transmitted to the calculation unit 2. In order to obtain the instruction input of this modified mode, buttons for selecting three types of modified modes are displayed in advance on the display unit 5, and the selection is acquired by, for example, double clicking the mouse on the cursor. It is also possible to obtain a change reference line change instruction by placing the cursor on the reference line BL1 on the A1 plane displayed on the display unit and, for example, double-clicking the mouse.

  Next, the deformation instruction acquisition unit 4 acquires an input for designating a new reference line BL1a from a designer or the like. This input can be made, for example, by a drag and drop operation with the mouse or the like on the deformation reference line BL1 displayed on the display unit 5. It is also possible to input a function that defines a new reference line BL1a and its start and end points from a keyboard. Information defining the new reference line BL1a acquired by these methods is subjected to image signal processing by the calculation unit 2 and displayed on the display unit 5. When the designer or the like refers to the trajectory of the new reference line BL1a displayed on the display unit 5 and determines that correction is necessary, the deformation instruction acquisition unit 4 newly creates a new method from the designer or the like. The correct baseline correction input.

(2) Change direction of drawing direction The change of the gradient surface by changing the drawing direction means that the drawing direction vector V of the deformation surface A1 is set as the original drawing direction vector V before deformation as shown in FIG. By changing the vector V to a new original direction vector Vb, the gradient surface defined by the deformation reference line BL1, the extraction direction V and the gradient angle θ is transformed into a new gradient surface. This new gradient surface is a gradient surface defined by the reference line BL1a, the new drawing direction vector Vb, and the gradient angle θ.

  As for the change of the gradient surface by changing the drawing direction, first, as in the case of the gradient surface deformation by changing the deformation reference line, the deformation instruction acquiring unit 4 allows the designer or the like to change the definition gradient surface A1 surface displayed on the display unit 5. When selecting a gradient surface deformation by changing the drawing direction among the three types of deformation modes with reference to the shape, the selection input is acquired from a designer or the like, and the selection input information is transmitted to the calculation unit 2.

  Next, the deformation instruction acquisition unit 4 refers to the extraction direction vector V of the deformation surface A1 displayed on the display unit 5 by the designer or the like and acquires an input for designating a new extraction direction vector Vb. This input may be acquired by, for example, a drag-and-drop operation with a mouse or the like that changes the direction of the original extraction direction vector V displayed on the display unit 5, or a vector component that defines a new extraction direction vector Vb is obtained from the keyboard. May be. The new extraction direction vector Vb acquired by these methods is subjected to image signal processing by the calculation unit 2 and displayed on the display unit 5 together with the deformation surface A1. The deformation instruction acquisition unit 4 refers to the original extraction direction vector V displayed on the display unit 5 and the input new extraction direction vector Vb, and determines that correction is necessary. A correction input for a new extraction direction vector is obtained from the designer or the like in the same manner.

(3) Gradient angle change instruction Gradient surface change by changing the gradient angle means that the gradient angle θ of the deformation surface A1 is the original gradient angle θ before deformation, as shown in FIG. By changing to the new gradient angle θc, the deformation surface A1 defined by the deformation reference line BL1, the drawing direction V, and the original gradient angle θ is transformed into a new gradient surface. This new gradient surface is a gradient surface defined by the reference line BL1, the drawing direction V, and the new gradient angle θc.

  In order to change the gradient surface by changing the gradient angle, the deformation instruction acquisition unit 4 first changes the shape of the deformation target area A1 surface displayed on the display unit 5 by the designer or the like in the same manner as the gradient surface deformation by the base line deformation. Referring to the three types of deformation modes, an input for selecting the gradient surface deformation by changing the gradient angle is acquired and transmitted to the calculation unit 2.

  Next, the deformation instruction acquisition unit 4 refers to the gradient angle θ displayed on the display unit 5 by the designer or the like, and acquires an input indicating a new gradient angle θb. This input may be acquired by, for example, a drag and drop operation with the mouse or the like on the deformation surface A1 displayed on the display unit 5, or the angle θb defining the new gradient angle θb may be obtained from the keyboard. Information indicating the new gradient angle θb acquired by these methods is displayed on the display unit 5 together with the deformation surface A1. When the designer or the like refers to the original gradient angle θ displayed on the display unit 5 and the input new gradient angle θb and determines that correction is necessary, the deformation instruction acquisition unit 4 To obtain a new gradient angle correction input in the same manner.

  The change instruction to change the deformation surface to a new gradient surface is at least one of the above (1) change reference line change instruction, (2) removal direction change instruction, and (3) gradient angle change instruction. Includes instructions. When two or more change instructions are included among these change instructions, the deformation instruction acquisition unit 4 sequentially acquires and inputs each change from the designer or the like. The order of acquisition may be any order.

  A deformation surface designation instruction for designating the above-described deformation surface and a change instruction for changing the deformation surface to a new gradient surface, wherein at least one of a reference line, a drawing direction, and a gradient angle defining the gradient surface is changed. By acquiring the change instruction to be performed, the deformation instruction acquisition (S104) is completed.

  A deformation surface designation instruction for designating the A1 surface acquired by the deformation instruction acquisition unit 4 as a deformation surface is transmitted to the boundary node provision means 21. As shown in FIG. 8, the boundary node providing means 21 is adjacent to the deformed surface A1 surface and the deformed surface A1 surface based on the deformed surface instruction information that uses the A1 surface as the deformed surface and the design data of the part A. Boundary nodes are provided at predetermined intervals on the boundary lines (AL2, AL4, AL5, and AL6) with the planes (A2, A4, A5, and A6) (S106). FIG. 8 shows an example in which four boundary nodes are given on each boundary line. FIG. 8 shows an example in which four boundary nodes are provided on each boundary line, but the number of boundary nodes is not limited to four. As the number of boundary nodes is increased and the boundary node spacing is narrowed, the shape of the boundary line can be extracted more faithfully. Therefore, the shape of the boundary line between the deformed surface and the connecting surface connecting the adjacent surfaces is more It can be reflected faithfully. On the other hand, since the amount of data increases as the number of boundary nodes added increases, it takes time for processing such as deformation processing of the calculation unit 2. Therefore, the deformation instruction acquiring unit 4 acquires setting inputs such as the interval and number of the boundary nodes according to the design article shape, the design stage, and the like from the designer, and the boundary node providing unit 21 acquires the input. A boundary node is assigned based on the set input. In addition, the boundary node providing means 21 determines the appropriate boundary node interval, number, etc. according to the design data, the deformation surface instruction, the shape of the deformation surface, etc., regardless of the setting input by the designer or the like. You may do it.

  Here, the boundary node assignment performed by the boundary node assigning means 21 includes the coordinate information of the boundary node and the boundary node of the deformation instruction to the deformation surface in the RAM 12 and the storage device 13 of the design data generation system 1. It is to associate and store the corresponding movement information. The coordinate information of the boundary node is a coordinate determined on the boundary line based on the design data used as a template by the boundary node adding unit 21 and the number of boundary nodes added. Further, the movement information is a movement vector derived by the deformation means 22 based on the design data and the deformation instruction for the deformation surface acquired by the deformation instruction acquisition unit 4. Since the deformed shape of the deformed surface is due to the deformation of the deformed surface before the deformation, the relationship between the deformed surface shape before the deformation and the deformed surface shape after the deformation is related by the deformation instruction. ing. For example, when the deformation instruction simply moves the deformation surface without changing the shape of the deformation surface, the relationship between the shape of the deformation surface before the deformation and the shape of the deformation surface after the deformation (the position change is also determined) by this movement vector. Including) can be derived. Similarly, even when the deformation instruction includes deformation of the shape such as rotation, reduction, and enlargement in addition to the movement, the relationship between the shape of the deformation surface before deformation and the shape of the deformation surface after deformation is related by the deformation instruction. It is attached. Since the relationship between the shape of the deformed surface before deformation and the shape of the deformed surface after deformation is related by the deformation instruction in this way, the relationship between the ridgelines of the surface that defines the shape before and after deformation is It can be derived based on the deformation instruction. Furthermore, the relationship before and after the deformation of the points on the ridge line defining the ridge line can also be derived based on the deformation instruction. That is, based on the deformation instruction information, it is possible to derive the relationship between the points on the ridge line of the deformation surface before the deformation and the points on the ridge line after the deformation.

  In the above description, the boundary node providing means 21 derives the boundary node corresponding points following the deformation of the deformation surface, but the boundary node providing means 21 derives the boundary node corresponding points simultaneously with the deformation of the deformation surface. It is also good. In this case, the boundary node assigning means 21 moves the boundary node to the deformation surface corresponding point along with the deformation of the deformation surface based on the coordinate information and movement information given to the boundary node. Information defining the movement from the point on the boundary line before the deformation to the point on the deformation surface after the deformation is referred to as movement information of the boundary node. Since the RAM 11, the ROM 12, the storage device 13 and the like store the coordinate information of the boundary node and the movement information corresponding to the boundary node of the deformation instruction to the deformation surface as the boundary node, the deformation is stored. A point on the deformed surface after deformation corresponding to the previous boundary node can be derived.

  The design data acquisition unit 3 has acquired mesh node design data composed of a plurality of mesh node coordinate groups arranged on a gradient plane defined by a reference line, a drawing direction, and a gradient angle as design data. In this case, when the interval and the number of mesh nodes on the boundary line are suitable for the deformation process, this mesh node can also be used as the boundary node. When the mesh node on the boundary line is used as the boundary node in this way, the boundary node giving means 21 gives movement information to the mesh node on the boundary line to make the boundary node. Whether or not the mesh nodes on the boundary line are suitable for the deformation process is determined by the designer regarding the fidelity of the deformation process in response to the deformation instruction from the designer and the processing speed of the deformation process. Judgment by. This determination may be made by a designer or the like based on the mesh pattern or the number of mesh divisions displayed on the display unit 5, and the deformation instruction acquisition unit 4 may acquire the determination. Further, the deformation instruction acquisition unit 4 acquires in advance the boundary node division interval or the range of the number of outer edge divisions allowed by the calculation unit 2 from the designer or the like, and temporarily stores the acquired set value in the RAM 12 or the storage device 13. In addition, the calculation unit 2 may determine whether or not the acquired mesh node design data is included in the allowable range for the set value based on the acquired mesh node design data. When the designer or the like determines that the acquired mesh design data is a mesh pattern that is not suitable for the deformation process, the deformation instruction income unit 4 inputs an instruction for newly giving a boundary node to the boundary node providing unit 21 from the designer or the like. To get. The boundary node providing means 21 that has newly received a boundary node provision instruction from the deformation instruction acquisition unit 4 performs the boundary node provision according to the instruction from the designer or the like based on the design data.

  Next, the deformation means 22 of the design data generation system 1 deforms the deformation surface A1 according to the deformation instruction acquired by the deformation instruction acquisition unit 4 from the designer or the like (S108).

  In the process of deforming the deformed surface A1 into the design data, the deforming means 22 first derives the relative positional relationship of the deformed surface outer edge line EL1 shown in FIG. 8 with respect to the deformed reference line BL1. In the design data generation system 1 according to the first embodiment, the relative positional relationship of the deformation surface outer edge line EL1 with respect to the deformation reference line BL1 is relative to the deformation reference line BL1 of the outer edge nodes provided at predetermined intervals on the deformation surface outer edge line. Derived as a relative positional relationship. Since the deformed surface outer edge line can be defined by a series of outer edge nodes provided in this way, in the design data generation system 1 according to the first embodiment, the relative positional relationship of the deformed surface outer edge line EL1 with respect to the deformation reference line BL1 is deformed. The design data is calculated by replacing the relative positional relationship of all outer edge nodes on the outer edge line with respect to the deformation reference line BL1. Therefore, the computing unit 2 first generates outer edge nodes at predetermined intervals on the deformed surface outer edge line based on design data and a designated input of the deformed surface outer edge line. When the design data acquisition unit 3 acquires mesh node design data expressed by a mesh node group and uses the mesh node design data as design data to be deformed, the coordinates of the mesh node are used as the outer edge nodes. Use as coordinates.

  Here, a method for deriving the relative positional relationship of the outer edge node with respect to the deformation reference line BL1 will be described by taking the second outer edge node NP62 from the left of the deformation surface outer edge line EL1 as an example.

  As an example of the relative positional relationship of the outer edge node NP62 with respect to the deformation reference line BL1, there is a relative positional relationship between the point Q satisfying a predetermined relationship on the deformation reference line BL1 and the outer edge node NP62. In the design data generation system 1 according to the first embodiment, the relative positional relationship of the outer edge node NP62 with respect to the deformation reference line BL1 is set as a relative positional relationship between the point Q satisfying a predetermined relationship on the deformation reference line BL1 and the outer edge node NP62. Looking for.

  Here, a method for obtaining the coordinates of the point Q satisfying a predetermined relationship on the deformation reference line BL1 will be described. Hereinafter, as shown in FIG. 9, with respect to the defined gradient plane A1, the function defining the deformation reference line BL1 is C (x, y, z), the drawing direction is the V vector, the gradient angle is θ, and the coordinates of the outer edge node NP62. (Position vector from a predetermined origin to NP62) is np62, coordinates of point Q on reference line BL1 are q (position vector from predetermined origin to point Q), tangent vector of reference line BL1 is vector t, point Q A tangent vector of the deformation reference line BL1 in FIG.

A plane l perpendicular to the vector n represented by (V × t) × V is referred to as a gradient plane l, and the gradient plane l can be defined at all points on the deformation reference line BL1. Among these gradient planes l, a point that defines a gradient plane lq including the outer edge node NP62 and that forms a tangent vector tq of the deformation reference line BL1 is determined as a point Q. On this gradient plane lq, the angle formed by the extraction direction line passing through the point Q and parallel to the extraction direction vector V and the straight line connecting the point Q and the outer edge node NP62 is the gradient angle θ.
(C (q) -NP62 (np62)) · V
= | C (q) −NP62 (np62) | cos θ Formula (1)
Thus, Q is the point that satisfies this equation (1).

  Therefore, by calculating the equation (1) for each coordinate from one end to the other end of the deformation reference line BL1 of the function C (x, y, z) representing the deformation reference line BL1, the equation (1) becomes A valid point Q can be identified.

  As described above, by obtaining the reference point Q serving as a reference for the relative position of the outer edge node NP62, the relative position of the outer edge node NP62 with respect to the deformation reference line BL1 is changed from the outer edge node NP62 to the point Q on the deformation reference line BL1. Can be derived as a vector (hereinafter referred to as RP62).

  In the above description, it is assumed that the reference point Q exists on the deformation reference line BL1, but depending on the function C (x, y, z) that defines the deformation reference line BL1, the reference point Q is on the deformation reference line BL1. There may be no. In such a case, the point Q is identified by the same method as described above on the line obtained by extending the deformation reference line BL1 with the C (x, y, z) function, and the deformation reference line BL1 is determined using the point Q on the extension line as a reference point. The relative positional relationship of the outer edge nodes with respect to is derived.

  Next, the deformation means 22 changes the gradient surface of the deformation surface to a new gradient surface based on the deformation instruction acquired by the deformation instruction acquisition unit 4. A new reference line, a new drawing direction, and a new gradient angle that define a new gradient surface are determined by a deformation instruction acquired from a designer or the like. That is, in S104, when a change of the deformation reference line is acquired from the designer or the like, the acquired line becomes a new reference line. When an instruction to change the drawing direction and the gradient angle is not acquired, the drawing direction and the gradient angle of the deformed surface become the new drawing direction and the new new gradient angle as they are. In S104, when a change in the extraction direction is acquired from the designer or the like (2), the input extraction direction becomes a new extraction direction. When an instruction to change the deformation reference line and the gradient angle is not acquired, the deformation reference line and the gradient angle of the deformation surface become the new reference line and the new gradient angle as they are. In S104, when a change of the gradient angle is acquired from the designer or the like (3), the acquired gradient angle becomes a new gradient angle. When an instruction to change the deformation reference line and the extraction direction is not acquired, the deformation reference line and the extraction direction of the surface to be deformed become the new reference line and the new extraction direction as they are. When two or more types of deformation instructions are acquired, the modified deformation reference line, the extraction direction, and the gradient angle become a new reference line, a new extraction direction, and a new gradient angle, respectively, and are not changed. The deformation reference line, the drawing direction, and the gradient angle become the new reference line, the new drawing direction, and the new gradient angle as they are. The gradient surface of the deformation surface is changed to the new gradient surface defined as described above, and the deformation means 22 deforms the design data representing the gradient surface of the deformation surface A1 into data representing the new gradient surface. To process.

  Next, the deformation | transformation means 22 performs the data process which moves the deformation | transformation surface outer edge line EL1 in design data based on a change instruction | indication and relative positional relationship. In the design data generation system 1 according to the first embodiment, the movement of the deformed surface outer edge line EL1 is performed as the movement of all outer edge nodes, and the deformed surface outer edge line after the movement is defined by a series of the outer edge nodes after the movement. Is done.

  The outer edge node moving method is independent for each of the three types of deformation instruction modes in S104: (1) deformation reference line change instruction, (2) removal direction change instruction, and (3) gradient angle change instruction. In the manner described. Therefore, the movement method of the outer edge nodes will be described in three parts: (1) movement by changing the deformation reference line, (2) movement by changing the drawing direction, and (3) movement by changing the gradient angle.

(1) Moving method of outer edge node by changing deformation reference line The second position from the left on the outer edge ridge line of the A1 surface shown in FIG. 8 is how the moving position of the outer edge node of the A1 surface which is the deformation target surface is determined. The outer edge node NP62 will be described as an example.

  The deformation means 22 first obtains the relationship between the deformation reference line BL1 and the new reference line BL1a. In order to obtain this relationship, points are provided at predetermined intervals on the deformation reference line BL1. As shown in FIG. 10, the relationship between the deformation reference line BL1 and the new reference line BL1a is a relative positional relationship between points provided on the deformation reference line BL1 at predetermined intervals and points on the new reference line BL1a. Can be sought.

  Here, as a method of determining the relative positional relationship between the point Q on the deformation reference line BL1 and the point Qa on the new reference line BL1a, for example, (a) distance parameter correspondence, (b) original line vertical correspondence, (c) destination There is line vertical correspondence.

  (A) For distance parameter correspondence, the ratio of the distance from one end to the point Q to the distance from one end to the other end on the deformation reference line BL1 is the distance parameter of the point Q, and the point Qa is one end on the new reference line BL1a. The ratio of the distance from one end to the point Qa with respect to the distance from the other end to the other end corresponds to a point equal to the distance parameter. For example, if the point Q is at a point that internally divides the deformation reference line BL1 1: 2, the new reference line BL1a is made to correspond to the point Qa that internally divides 1: 2. (B) The original vertical correspondence is a correspondence in which a point Qa is an intersection of a perpendicular drawn from the point Q on the deformation reference line BL1 to the new reference line BL1a and the new reference line BL1a. (C) The tip vertical correspondence is a correspondence in which a point corresponding to a new reference line BL1a of a perpendicular passing through the point Q on the deformation reference line BL1 among points perpendicular to the new reference line BL1a is a point Qa. .

  In addition to these three types of correspondence methods, other correspondence methods between two points used in CAD or the like may be used. The selection of the handling method is acquired by the deformation instruction acquisition unit 4 from the designer or the like before the deformation surface deformation step (S108). The positional relationship between the point Q on the deformation reference line BL1 thus determined and the point Qa on the new reference line BL1a is defined as a vector from the point Q to the point Qa (hereinafter referred to as a vector QQa).

  In accordance with the relative positional relationship of the outer edge node with respect to the deformation reference line BL1 and the deformation relationship from the deformation reference line BL1 to the new reference line BL1a, the deformation means 22 deforms the design data for moving the outer edge nodes, respectively. Process. As shown in FIG. 11, the movement is performed by moving all the outer edge nodes on the deformation surface outer edge line EL1 to positions where the outer edge node has a relative positional relationship with the deformation reference line BL1 with respect to the new reference line BL1a. The later deformation surface outer edge line EL1a can be defined.

  Hereinafter, the movement destination of the outer edge node NP62 on the deformation surface A1 is set as an outer edge node NP62a on the deformation surface A1a after deformation, and a movement vector from the outer edge node NP62 to the outer edge node NP62a on the deformation surface A1b after deformation is defined. Write DV62.

FIG. 10 shows the positional relationship between the outer edge node NP62 on the deformation surface A1 and the outer edge node NP62a on the deformation surface A1a after deformation. Here, the positional relationship between the outer edge node NP62 and the point Q associated with the relative position on the deformation reference line BL1 is represented by a vector RP62. Since the relative positional relationship between the deformation reference line BL1 and the outer edge node NP62 is maintained as the positional relationship between the point Qa on the new reference line BL1a and the movement destination NP62a of the outer edge node,
Vector DV62 = vector RP62 + vector QQa-vector RP62
= Vector QQa
It becomes.

  Therefore, the deformation means 22 moves the outer edge node of the deformation surface according to the vector QQa from the corresponding point Q on the deformation reference line BL1 to the corresponding point Qa on the new reference line BL1a corresponding to the point Q, respectively. The outer edge node after the movement has a relative positional relationship with the new reference line BL1a with respect to the deformed reference line BL1 of the derived outer edge node.

  The deformed surface outer edge line EL1a is defined by a series of all the outer edge nodes on the deformed surface outer edge line EL1 having undergone such movement. Since the deformed surface outer edge line EL1a after the movement maintains the relative positional relationship with respect to the deformation reference line BL1 that the outer edge node before the movement has, the deformed surface outer edge line EL1a is on a new gradient surface. Thus, a new deformed surface outer edge line EL1a facing the new reference line BL1a of the gradient surface is obtained. In this way, a new defined gradient surface A1a surface is defined by a part of the new gradient surface and the reference line BL1a of the gradient surface and the new deformed surface outer edge line EL1a. This new demarcated gradient surface A1a is the shape after deformation according to a deformation reference line change instruction by the designer of the deformation surface A1.

(2) Moving method of outer edge node by changing drawing direction In the case of changing the gradient surface by an instruction to change the drawing direction as shown in FIG. 6, the deforming means 22 of the computing unit 2 newly sets the outer edge node on the deformed surface outer edge line EL1. A design data transformation process is performed in which the design data is moved to positions satisfying the gradient angle θ with respect to the drawing direction Vb.

  Here, an example of the outer edge node P, which is one of the outer edge nodes on the deformation surface outer edge line EL1, shows how the movement destination of the outer edge node on the deformation surface outer edge line EL1 is determined in the gradient surface deformation by changing the drawing direction. Explained. FIG. 12A is a diagram illustrating the position of the outer edge node P before the change of the drawing direction with respect to the deformation reference line BL1. The outer edge node P has a drawing direction and a gradient angle θ on a gradient plane l having a normal of the outer product of the drawing direction vector V and the outer product of the tangent vector t and the drawing direction vector V at the point Q on the deformation reference line. The distance from the point Q on the deformation reference line is determined by the equation (1).

  Here, when the deformation instruction obtaining unit 4 obtains an instruction to change the change direction vector V to a new extraction direction vector Vb from the designer or the like, the gradient plane l is new as shown in FIG. The outer product of the drawing direction vector Vb, the tangent vector t at the point Q on the reference line, and the new drawing direction vector Vb, and the gradient plane lb whose normal is the outer product. On this new gradient plane lb, a point that is on a line that forms a gradient angle θ with the new draft direction vector Vb and is determined by the equation (1) from the point Q on the reference line becomes the position of the new outer edge node Pb. .

  Therefore, in the case of changing the gradient surface according to the drawing direction change instruction, the deforming means 22 defines the outer edge node P with the new drawing direction vector Vb and the gradient angle θ while maintaining the distance from the point Q on the reference line. Move to the position where

  The deforming means 22 performs such movement of the outer edge nodes with respect to all outer edge nodes of the deformation surface A1, so that a new deformed surface outer edge line EL1b after the movement can be defined by a series of the outer edge nodes after the movement. . Since the new deformed surface outer edge line EL1b after the movement holds the relative positional relationship of the deformed surface outer edge line EL1 before the deformation with respect to the deformation reference line BL1, the new deformed surface outer edge line EL1b after the movement is obtained. Then, it moves to a position on the new gradient surface and facing the deformation reference line BL1 of the gradient surface. Therefore, a new defined gradient surface A1b can be defined by a part of the new gradient surface and the deformation reference line BL1 of the gradient surface and the new deformation surface outer edge line EL1b after the movement. This new demarcated gradient surface A1b surface becomes the shape after deformation according to the drawing direction change instruction by the designer of the deformation surface A1 surface.

  As mentioned above, although the deformation | transformation by the extraction direction change of one definite gradient surface which comprises the component A was demonstrated, the extraction direction is one parameter with respect to one article | item. Therefore, in the final design data, the drawing direction of all the defined gradient surfaces of the part needs to be common. Therefore, after the deformation is performed by changing the drawing direction on one defined gradient surface, the designer or the like refers to the shape of the new defined gradient surface after deformation displayed on the display unit 5 and determines the new defined gradient surface. When the shape of the gradient surface is the one desired by the designer, an instruction to change the gradient surface by changing the drawing direction is also given to the deformation instruction acquisition unit 4 for the remaining defined gradient surfaces of the reference shape. The deformation instruction acquisition unit 4 acquires the instruction. It is determined that the designer or the like does not need to confirm the changed shape of the defined gradient surface that has been deformed first, and an instruction to the effect that it is not necessary to confirm the changed shape of the defined gradient surface is given to the deformation instruction acquisition unit 4. Is obtained, the deformation means 22 simultaneously performs the gradient surface deformation by changing the drawing direction with respect to one deformation surface on all the defined gradient surfaces constituting the article. Prior to the deformation step (S108), the deformation instruction acquisition unit 4 acquires an instruction as to whether to perform deformation processing while confirming the shape of each surface, or to perform a plurality of surfaces continuously or simultaneously, from the designer or the like.

(3) Moving method of outer edge node by changing gradient angle In the case of changing the gradient surface by instructing the gradient angle as shown in FIG. 7, the deformation means 22 of the computing unit 2 extracts the outer edge node on the deformation surface A1 in the direction V. A design data transformation process is performed in which each is moved to a position satisfying the new gradient angle θc with respect to.

  Here, how the movement position of the outer edge node on the deformation surface outer edge line EL1 is determined in the change of the gradient surface by the change of the gradient angle, the outer edge node P which is one of the outer edge nodes on the deformation surface outer edge line EL1 is determined. Explained as an example. FIG. 13 is a diagram for explaining the movement from the outer edge node P before the change of the gradient angle to the point Pc by the change of the gradient angle. The outer edge node P has a drawing direction and a gradient angle θ on a gradient plane l having a normal of the outer product of the drawing direction vector V and the outer product of the tangent vector t and the drawing direction vector V at the point Q on the deformation reference line. The distance from the point Q on the deformation reference line is a point determined by the equation (1). Here, in response to a change instruction to set the gradient angle θ to θc, the outer edge node P moves on the gradient plane l to a line that forms the gradient angle θc with respect to the drawing direction vector V.

  Here, in the change of the gradient surface by the gradient angle change instruction, there is a request for preserving the height with respect to the drawing direction of the defined gradient surface. In the design data generation system 1 according to the first embodiment, the destination of the outer edge node is determined so as to satisfy this requirement. FIG. 14 shows the relationship between the outer edge node P before movement on the gradient plane l and the point Pc that is the movement destination according to the gradient angle change instruction. The extraction direction vector V direction component of the vector from the point Q to the outer edge node P on the deformation surface is equal to the extraction direction vector V direction component of the vector from the point Q to the destination point Pc of the outer edge node P. If the point Pc to be used is the destination of movement of the outer edge node P by changing the gradient angle, it is possible to satisfy the requirement for preserving the height of the defined gradient surface in the drawing direction.

  Hereinafter, a method for obtaining the coordinates of the point Pc on the new gradient surface, which is the destination of the outer edge node P on the deformed surface outer edge line EL1, will be described. First, the deformation means 22 passes through the point Q based on the relative positional relationship of the outer edge node with respect to the deformation reference line, and the deformation reference line, the drawing direction, and the gradient angle of the design data, to a line v parallel to the drawing direction vector. A point Pv at which a perpendicular can be drawn from the outer edge node P is obtained. Next, using the coordinates of this point Pv, a vector PvP from the point Pv to the outer edge node P is obtained. As described above, the deforming means 22 can define the coordinates of the point Pc as the position obtained by moving the vector by multiplying the vector PvP by (sin θ / sin θc) from the point Pv.

  The deformation means 22 moves all the outer edge nodes of the deformation surface A1, and a series of the outer edge nodes after the movement defines a new deformation surface outer edge line EL1c after the movement. Since the new deformed surface outer edge line EL1c after the movement holds the relative positional relationship of the deformed surface outer edge line before the movement with respect to the deformation reference line BL1, it is on the new gradient surface and the deformation reference line BL1 of the gradient surface. Move to a position opposite to. In this way, a new defined gradient surface A1c surface can be defined by a part of the new gradient surface and the deformation reference line BL1 of the gradient surface and the new deformation surface outer edge line EL1c after the movement. This new demarcated gradient surface A1c surface becomes the shape after deformation according to a gradient angle change instruction by the designer of the deformation surface A1 surface.

  The design data generation system 1 according to the first embodiment includes the above (1) movement of the outer edge node by deformation of the reference line, (2) movement of the outer edge node by changing the drawing direction, and (3) outer edge node by changing the gradient angle. According to the three modes of movement, the outer edge line of the deformation surface can be moved, and the deformed shape of the deformation surface on the new gradient surface can be defined. These three deformation modes can be performed independently, respectively, but when the deformation instruction acquisition unit 4 acquires two or three types of deformation modes from the designer, the outer edge of the deformation surface in turn for each deformation mode. Move the line. When the deformation instruction mode acquired by the deformation instruction acquisition unit 4 from the designer is two or three types including the defined gradient surface deformation by changing the reference line, first, the defined gradient surface deformation by changing the reference line is performed. After performing, it is preferable to carry out the modification of another aspect. (2) Draw direction change and (3) Gradient angle change perform deformation satisfying the draw direction and gradient angle according to the deformation instruction with respect to the reference line. Therefore, a deformation procedure for determining a new reference line as a reference first. This makes it possible to perform an efficient design data transformation process.

  A new article shape based on the design data after deformation is subjected to image signal processing by the calculation unit 2 and displayed on the display unit 5. When the designer refers to the displayed new part shape and determines that further deformation is necessary, the designer inputs a deformation instruction to the deformation instruction acquisition unit 4, and the deformation instruction acquisition unit 4 receives the instruction. get. The deforming means 22 performs further deformation using the deformed shape as a reference shape, and repeats the deformation processing flows S104 to S108 shown in FIG.

  As described above, the shape of the defined gradient surface after deformation by the deformation instruction is defined by a new gradient surface defined by the new reference line, the drawing direction, and the gradient angle by the designer's change instruction, and the region. It is uniquely determined only by the outer edge line of the deformed surface after movement for defining. Therefore, in the design method of the design data generation system 1 according to the first embodiment, the deformation surface outer edge line is moved in accordance with the deformation instruction and the relative positional relationship of the deformation outer edge line with respect to the reference line. It is also possible to divide the mesh and move all the mesh nodes at the intersection of the mesh.

  In general, when new design data is generated by performing deformation processing on design data of an article shape, deformation is repeatedly performed to obtain design data of a desired shape such as a designer. When the deformation process is repeatedly performed on the design data as described above, it is necessary to generate an outer edge node every time the deformation process is performed. When the outer edge line of the deformed surface is a complicated curve, it may take some time to generate the outer edge node even if a high-speed computer is used. Therefore, while the deforming means 22 of the calculation unit 2 is generating the outer edge node, it becomes a waiting time for the designer or the like each time.

  Accordingly, the deforming means 22 first divides the entire surface of the demarcated gradient surface with respect to the article shape indicated by the design data acquired in S104 prior to the deforming surface deforming step, and mesh nodes at the intersections of the meshes. Is generated. The deformation means 22 uses this mesh node as an outer edge node in the deformation process. In this way, mesh nodes are generated in advance on the entire surface of the defined gradient surface, and the mesh nodes are used as outer edge nodes in the deformation process, so that it is not necessary to generate an outer edge node every time the deformation process is performed. The work is not interrupted. When mesh nodes are generated on the defined gradient surface in this way, all the mesh nodes included in the deformation surface are moved in response to the deformation instruction. By doing so, the mesh nodes are arranged on the defined gradient plane after the one deformation process, so that the mesh nodes after the movement can be used as they are as the outer edge nodes when the deformation is continued.

  Hereinafter, a method of dividing the entire surface of the defined gradient surface of the reference shape into meshes and moving all the mesh nodes of the deformation surface will be specifically described taking the A1 surface of the shape of the part A shown in FIG. 4 as an example. First, the deforming means 22 meshes the defined gradient surfaces A1, A2, A3, A4, A5, and A6 of the part A at predetermined intervals, and generates mesh nodes at the intersections of the meshes. The mesh node data is temporarily stored in the RAM 12, the storage device 13, and the like, and the CPU 10 reads the data as necessary for the deformation processing calculation.

  FIG. 15 shows an example of the mesh division pattern generated on the A1 plane and mesh nodes. In this example, a quadrilateral mesh pattern in which the A1 surface is divided into three in the horizontal direction and divided into three in the vertical direction is shown as an example of the mesh pattern. Each surface element divided into meshes is called a patch. Here, as an example of the mesh pattern, a quadrilateral mesh pattern that is divided into three parts and divided into three parts in the vertical direction is used, but the number of divisions and the patch shape are not limited thereto. For example, the mesh may be divided so that the patch shape is a triangle according to the surface shape. The finer the mesh pattern, the more accurate the design data can be transformed with respect to the shape of the deformation surface and the deformation instruction acquired by the deformation instruction acquisition unit 4 from the designer, but the amount of data increases. For this reason, the processing time for the deformation process or the like becomes longer. Therefore, the designer or the like inputs the mesh node generation interval, the number of meshes, and the like determined according to the situation to the deformation instruction acquisition unit 4, and the deformation instruction acquisition unit 4 acquires the setting input. The deformation means 22 performs mesh division based on the acquired setting information such as the mesh node generation interval and the number of meshes. In addition, the deformation means 22 does not change the setting value and design data inputted in advance according to the shape of the surface based on the design data, regardless of the setting input information such as the mesh node generation interval and the number of meshes. A mesh node may be generated by automatically determining an appropriate mesh node generation interval, the number of meshes, and the like based on the determination result.

  Next, the movement of the mesh nodes will be described by taking as an example a case where the deformation surface is the entire A1 surface and the deformation instruction is a deformation reference line change instruction. FIG. 16 is a diagram illustrating movement of mesh nodes on the A1 plane. The deformation means 22 moves the mesh nodes according to the change of the deformation reference line BL1 to BL1a. Similar to the movement of the outer edge node, the deformation means 22 first derives the relative positional relationship of the mesh node with respect to the deformation reference line, similarly to the relative position relationship of the outer edge node with respect to the deformation reference line. The deformation means 22 moves the mesh nodes in the same manner as the movement of the outer edge nodes, based on the relative positional relationship with respect to the deformation reference line and the instruction to change the deformation reference line. Since the mesh node moved in this way moves so as to form a relative positional relationship with respect to the deformation reference line before the movement with respect to the new reference line determined according to the change instruction of the gradient surface, the mesh node after the movement is Each will be on a new delimited slope plane.

  In the above example, since the deformed surface is made to coincide with the defined gradient surface A1, the mesh nodes are arranged on the deformed surface outer edge line EL1 at a predetermined interval. In the case of different from the above, the mesh nodes generated in advance do not exist on the outer edge line of the deformation surface. In such a case, a mesh node within a predetermined distance from the deformation surface outer edge line is used as the outer edge node. The predetermined distance is acquired in advance by the deformation instruction acquisition unit 4 from the designer or the like before the deformation surface deformation step (S108). If there are few mesh nodes within a predetermined distance from the outer edge line of the deformed surface, and the designer determines that the shape after the movement of the mesh nodes does not reflect the intention of the designer, etc. The user instructs the deformation instruction acquisition unit 4 to generate the mesh node again by reducing the mesh node generation interval or increasing the number of mesh nodes, and the deformation instruction acquisition unit 4 acquires the instruction. The deformation means 22 generates mesh nodes having an interval and a number corresponding to the instructions of the designer or the like acquired by the deformation instruction acquisition unit 4. The deformation | transformation means 22 performs the same movement with respect to the newly generated new mesh node, and deform | transforms a demarcated gradient surface.

  Note that the mesh nodes may be generated after acquisition of the deformation instruction (S104) or before acquisition of the deformation instruction (S104). When it is performed after the deformation instruction is acquired (S104), mesh division is performed using the previously acquired deformation area as the outer edge of the mesh division area, so that mesh nodes can be generated on the outer edge line of the deformation surface.

  When all the mesh nodes on the deformed surface are moved in this way, after performing all the deformation processing, the patches divided by these mesh nodes are integrated to obtain design data that expresses the surface for each defined gradient surface. It is preferable. This patch integration processing can be performed by a method widely known in CAD.

  In the above, the movement of the mesh node has been described by taking the case where the gradient plane change instruction is a modification reference line change instruction as an example. Each can be moved by the same movement method as the outer edge node.

  In the design data generation system 1, the relative positional relationship between the deformation surface outer edge line and the deformation reference line is obtained as the relative position relationship between the outer edge node on the deformation reference line or the mesh node within the predetermined distance from the deformation reference line. However, the relative positional relationship between the deformation surface outer edge line and the deformation reference line may be directly obtained. For example, when the deformation surface outer edge line can be expressed in a functional relationship with respect to the deformation reference line, such as when the deformation surface outer edge line is translated from the deformation reference line, the deformation means 22 As a relation of the functions, the relative positional relationship between the deformation surface outer edge line and the deformation reference line may be derived from the design data and the data of the deformation surface outer edge line input by the designer or the like.

  As described above, when the deformation means 22 deforms the deformation surface in accordance with the deformation instruction, the deformation surface adjacent to the boundary line before the deformation may be separated or intersected. is there. For example, as shown in FIG. 17, when the defined gradient surface A1 surface of the part A is deformed to the A1b surface by changing the drawing direction, the A1b surface after the deformation of the A1 surface is in contact with the adjacent surface A5 surface, but A1b The surface is separated from the adjacent surfaces A2, A4, and A6. In order to connect between the separated surfaces as described above, the design data generation system 1 according to the first embodiment generates a connection surface or an extended surface obtained by extending either of the separated surfaces. . A method for generating the connection surface and the extension surface will be described by taking a surface connecting the A1b surface and the A2 surface as an example.

  First, the boundary node corresponding point deriving means 23 obtains the boundary node corresponding point on the deformation surface corresponding to the boundary node on the A2 surface adjacent to the deformation surface A1 on the A1b surface which is the deformed deformation surface ( S110).

  That is, the boundary node corresponding point deriving unit 23 places the points corresponding to the boundary nodes NP21, NP22, NP23, and NP24 on the adjacent surface A2 surface adjacent to the deformation surface A1 surface on the deformed deformation surface A1b surface. Ask for each. The coordinate information of these boundary nodes and the movement information corresponding to the boundary nodes of the deformation instruction to the deformation surface are stored in the RAM 12 and the storage device 13 of the design data generation system 1 in association with each other. Therefore, a point moved by the movement amount (three-dimensional vector) included in the movement information of each boundary node from the coordinates of the boundary nodes NP21, NP22, NP23, and NP24 corresponds to the deformed deformation surface A1b surface. It can be derived that the points are the boundary surface corresponding points NP21b, NP22b, NP23b, and NP24b on the deformation surface A1b after deformation corresponding to the boundary nodes before deformation.

  In the example shown in FIG. 17, the adjacent surface is not deformed and only the deformed surface is deformed according to the deformation instruction. However, when the adjacent surfaces are deformed differently and separated from each other, Similarly, this boundary node corresponding point derivation can be applied assuming that only the other surface is relatively deformed.

  Next, the connection surface generation unit 24 generates a connection surface defined by a series of lines respectively connecting the boundary node of the adjacent surface and the boundary node corresponding point of the deformed deformation surface corresponding to the boundary node ( S112). That is, as shown in FIG. 18, the connection surface generation means 24 connects the boundary node NP21 of the adjacent surface A2 surface and the boundary node corresponding point NP21b on the deformation surface of the deformed deformation surface A1b surface corresponding to this boundary node. Find the line LC21. Similarly, the connection surface generation unit 24 calculates a line LC22 connecting the boundary node NP22 and the boundary node corresponding point NP22b on the deformation surface, and calculates a line LC23 connecting the boundary node NP23 and the boundary node corresponding point NP23b on the deformation surface, A line LC24 connecting the boundary node NP24 and the boundary node corresponding point NP24b on the deformation surface is obtained. In this way, the connection surface generation unit 24 obtains a line connecting all the boundary nodes on the A2 surface and the boundary node corresponding points on the deformation surface corresponding to the boundary nodes. Next, based on the coordinate information of these lines, the connection surface generation means 24 uses a series of lines extending from the A2 surface and connecting the boundary node and the corresponding boundary node on the deformation surface corresponding to the boundary node. A prescribed connection surface BF12 is obtained. Since this connection surface BF12 is a surface defined by lines connecting the outer edge line to which the outer edge node of the adjacent surface A2 surface is given and the point on the deformation surface A1b after deformation, deformation of the deformation surface A1 surface. Thus, the gap generated between the adjacent surface A2 surface and the deformed deformed surface A1b surface is filled, and the connecting surface connects the adjacent surface A2 surface and the deformed deformed surface A1b surface.

  The connection surface generation means 24 generates adjacent surfaces that connect the deformed deformation surface A1b surface, the adjacent surface A4 surface, and the adjacent surface A6 surface, respectively, by the same method (S112). The three connection surfaces described above connect all the distances between the deformed deformed surface A1b and the adjacent surfaces generated by the deformation of the deformed surface A1.

  In general, the connection surface generated by the method described above is not necessarily a gradient surface. However, in general, this connection surface is a very narrow surface compared to other surfaces, and as a general rule, this connection surface may be allowed as design data of an article that must be expressed by a gradient surface. The design data after the modification of the indicated deformed shape is subjected to image signal processing by the calculation unit 2 and displayed on the display unit 5. At this time, the connection surface that cannot be defined by the gradient surface is displayed in a color different from that of the gradient surface so that a designer or the like can easily distinguish it from other gradient surfaces. Here, it is assumed that the connection surface is a surface defined by a group of straight lines connecting the boundary nodes that were one ridge line node before the indicated deformation and connecting the boundary nodes. The boundary nodes that were one ridge line node may be connected not by a straight line but by a curve that smoothly connects the gradient surfaces. The curve in this case can be obtained by a method widely known in CAD from the reference line that defines the gradient surface, the drawing direction, and the gradient angle or the coordinates of a predetermined number of mesh nodes in the vicinity of the boundary node. .

  Thus, the generation of the connection surface connecting the deformation according to the deformation surface deformation instruction and the separation generated by the deformation is completed, and the generation of the design data of the new shape is completed (S114). The design data of the new shape generated by this design method becomes design data indicating the deformed surface after deformation, the adjacent surface, other deformed surfaces of the reference shape, surfaces other than the adjacent surface, and connection surfaces.

  According to the design data generation system 1 according to the first embodiment, the connection surface generation unit 24 even when the deformation according to the instruction from the designer or the like with respect to the reference shape is to separate the deformation surface and the adjacent surface. However, based on the boundary node generated by the boundary node providing unit 21 and the boundary node corresponding point derived by the boundary node corresponding point deriving unit 23, a connection surface that connects the deformed surface and the adjacent surface is generated and deformed. Useful design data in which the separation between the surface and the adjacent surface is eliminated can be generated. Since it is not necessary for the designer to perform the operation of eliminating the separation by defining the connection surfaces one by one with respect to the shape after deformation according to the deformation instruction, the shape design of the new article can be performed efficiently. it can.

[Second Embodiment]
As described above, the connection surface generated by the connection surface generation unit 24 may not be a surface that is extended to be the surface of the adjacent surface or the deformed surface after deformation. In designing a new article, the surface that connects the separation between the deformed surface and the adjacent surface generated by the designer's deformation instruction is extended as it is, and the adjacent surface and the deformed surface are deformed. In some cases, it may be desirable to connect the separation from the surface.

  FIG. 19 shows a design data generation method according to the second embodiment of the present invention in the case where the surface connecting the deformation surface and the adjacent surface is formed by extending the deformation surface and the adjacent surface. It is a flowchart which shows an example schematically. Hereinafter, a design data generation method for a new article shape based on a separated connection by extending the surface will be described with reference to the configuration of the design data generation system 1 shown in FIG.

  As in the first embodiment, the design data acquisition unit 3 acquires design data (S102), and the deformation instruction acquisition unit 4 acquires a deformation instruction from a designer or the like (S104). Next, the boundary node providing means 21 gives a boundary node on the boundary line between the deformation surface and the boundary surface (S106), and the deformation means 22 deforms the deformation surface according to the deformation instruction (S106). Further, the boundary node corresponding point derivation means 23 obtains a corresponding point corresponding to the boundary node on the deformation surface (S110).

  Next, the intersection line deriving unit 25 of the design data generation system 1 derives an intersection line between the infinitely extended surface of the adjacent surface and the infinitely extended surface of the deformed surface based on the design data and the deformation instruction ( S120). Here, the shape after deformation of the deformation surface will be described by taking the shape shown in FIG. 17 as an example by changing the drawing direction of the deformation surface A surface. Hereinafter, of these shapes, a surface where the deformed deformation surface A1b surface and the adjacent surface A2 surface are connected to each other will be described as an example. FIG. 20A shows an f-plane cross section of FIG. Here, the f plane is a plane including a boundary node NP23 of the adjacent plane A2 plane and a corresponding point NP23b corresponding to the NP23 in the deformed plane A1b plane. The intersection line deriving unit 25 is based on design data defining the deformed deformed surface A1b surface derived by the deforming unit 22 in S108 and data indicating the A2 surface in the design data of the reference shape acquired by the design data acquiring unit 3. Then, an intersection line LI12 between the infinitely extended surface of the deformed deformed surface A1b and the infinitely extended surface of the adjacent surface A2 is derived.

  Next, the extension surface demarcation means 26 primarily supplies the boundary ridge line extension lines obtained by extending the boundary connection ridge lines RL21 and RL22 connected to the boundary line of the adjacent surface A2 to the intersection line LI21 to the RAM 12 or the storage device 13. Derivation is performed based on the stored design data and the intersection data derived by the intersection deriving means 25. In the example of the shape shown in FIG. 21, since the intersection line LI21 overlaps the boundary node NP21 that is the end point of one boundary connection ridge line RL21, the boundary ridge line extension line eRL21 extended from the boundary connection ridge line RL21 to the intersection line LI21 It becomes the node NP21 itself. The boundary ridge line extension line eRL22 extended from the other boundary connection ridge line RL22 to the intersection line LI22 is derived as shown in FIG. The extension surface defining means 26 is defined by the boundary ridge line extension line eRL21 (boundary node NP21) and the boundary ridge line extension line eRL22 thus derived from the infinite extension surface of the adjacent surface A2, and the boundary line BL2 and the intersection line LI21. A region to be formed is defined as an adjacent surface extension surface eA2 surface (S112).

  Next, the boundary node corresponding point deriving unit 23 converts the boundary node on the intersection line corresponding to the boundary nodes (NP21, NP22, NP23, and NP24) on the intersection line LI21, the boundary node information provided by the boundary node providing unit 21, and the deformation Based on the data of the deformed deformation surface A1b surface derived by the means 22, the data of the intersection line LI21 derived by the intersection line deriving means 25, and the data of the adjacent surface extension surface eA2 surface defined by the extension surface defining means 26, The intersection boundary node corresponding points (NP21i, NP22i, NP23i, and NP24i) are obtained (S124). The boundary node corresponding points on the intersection line are arranged in proportion to the arrangement of the boundary nodes on the boundary line on the intersection line segment defined by the intersection of the two boundary ridge line extension lines and the intersection line, for example. It is decided. In the example of the shape shown in FIG. 21, the deformed surface A1b after deformation and the adjacent surface A2 are in contact with each other at the boundary node NP21, so that NP21i is at the same position as NP21.

  Next, the connection surface generation means 24 derives the boundary node corresponding points (NP21b, NP22b, NP23b, and NP24b) and the intersection boundary corresponding points (NP21i, NP22i, NP23i) derived by the boundary node corresponding point derivation means 23. , And NP24i), the lines connecting the deformation surface boundary node corresponding points (NP21b, NP22b, NP23b, and NP24b) and the intersecting line boundary node corresponding points (NP21i, NP22i, NP23i, and NP24i), respectively. Further, a surface defined by the series of these derived lines is generated as the deformed surface connecting surface BF2 surface (S126). The adjacent surface extension surface eA2 surface and the deformation surface connection surface BF2 surface are subjected to image signal processing by the calculation unit 2 and displayed on the display unit 5.

  The generation of the surface connecting the separation between the deformed deformed surface A1b surface and the A2 surface which is one of the adjacent surfaces has been described above. It can generate similarly about the surface which connects separation with surface A1b.

  In the design data generation system 1 according to the second embodiment, the separation of the surface caused by the deformation of the deformation surface is connected by the surface of the adjacent surface or the extension surface and the connection surface, or the design according to the first embodiment An instruction as to whether to connect on one connection surface as in the data generation system 1 is acquired by the deformation instruction acquisition unit 4 from a designer or the like. This selection instruction may be acquired after the designer or the like refers to the deformed shape of the deformed surface on the display unit 5.

  By the procedure described above, the design data of the deformation surface connection surface BF2 surface connected to the adjacent surface extension surface eA2 surface, which connects the separation between the deformation surface and the adjacent surface generated by the designer's instruction to deform the deformation surface, is obtained. Generated. Since the adjacent surface extension surface eA2 is a surface trimmed from the infinite extension surface of the adjacent surface A2, the surface is an extension surface of the adjacent surface A2 and is a gradient surface.

  Through the above steps, generation of design data of a new shape according to the second embodiment in the design data generation system 1 is completed (S128). The generated design data shows a shape including the deformed surface after deformation, the adjacent surface, and the adjacent surface extension surface and the deformed surface connecting surface that connect the distance between the deformed surface after deformation and the adjacent surface. .

  As described above, in the design data generation method described above, the adjacent surface extension surface that extends the adjacent surface to the intersection line, and the connection line that connects the intersection line that is the outer edge line of the adjacent surface extension surface and the deformed deformation surface The deformed surface after deformation and the adjacent surface are connected by the surface, but the deformed surface after extending the deformed surface to the intersection line and the outer edge line of the deformed surface extended surface. It is good also as what connects the deformation | transformation surface after deformation | transformation, and an adjacent surface by the connection surface which connects an intersection line and an adjacent surface which are.

  A method of generating the extension surface and the connection surface will be described with reference to the shape shown in FIG. Hereinafter, similarly, the surface which connects separation of the deformation surface A1b surface after deformation | transformation and the adjacent surface A2 surface among this shape is demonstrated to an example.

  The extended surface delimiting means 26 is designed to obtain boundary ridge line extensions obtained by extending the boundary connection ridge lines BL1 and EL1b connected to the boundary line of the deformed deformation surface A1b surface to the intersection line LI21, respectively, as design data and intersection line derivation means. 25 is derived based on the data of the intersection line derived by 25. As shown in FIG. 22, since the intersection line LI21 overlaps the boundary node NP21 that is the end point of one boundary connection ridgeline BL1, the boundary ridgeline extension line eBL1 extended from the boundary connection ridgeline BL1 to the intersection line LI21 is the boundary node NP21. It becomes the point. A boundary ridge line extension line eEL1b extended from the other boundary connection ridge line EL1b to the intersection line LI22 is derived. The extended surface delimiting means 26, from the infinitely extended surface of the deformed deformed surface A1b surface, the boundary ridge line extended line eBL1 (boundary node NP21) and the boundary ridge line extended line eEL1b derived in this way, and the deformed deformed surface The region defined by the boundary line BL12 and the intersection line LI21 in the deformed deformation surface defined by the series of boundary node corresponding points derived in the above is defined as the deformation surface extension surface eA1b surface.

  Next, the boundary node corresponding point deriving means 23 gives boundary nodes on the intersection line corresponding to the boundary nodes (NP21, NP22, NP23, and NP24) on the intersection line LI21 included in the deformed surface extension surface eA1b surface. The boundary node information given by the means 21, the data of the deformed deformation surface A1b surface derived by the deformation means 22, the data of the intersection line LI21 derived by the intersection line deriving means 25, and the deformation surface defined by the extension surface defining means 26 Based on the data of the extended surface eA1b surface, the intersection boundary node corresponding points (NP21j, NP22j, NP23j, and NP24j) are obtained. Here, as shown in FIG. 22, the deformed surface A1b after deformation and the adjacent surface A2 surface are in contact with each other at the boundary node NP21. Therefore, NP21j is at the same position as NP21.

  Next, the connection surface generation means 24 is based on the coordinate data of the boundary node corresponding points (NP21j, NP22j, NP23j, and NP24j) derived by the boundary node corresponding point derivation means 23, and the boundary nodes (NP21, NP22). , NP23, and NP24) and the intersection boundary boundary node corresponding points (NP21j, NP22j, NP23j, and NP24j) are obtained, and the plane defined by the series of these derived lines is defined as the adjacent plane connecting plane. Generated as the BF1 plane.

  By the procedure described above, the design data of the adjacent surface connecting surface BF1 connected to the deformed surface extension surface eA1b surface, which connects the distance between the deformed surface and the adjacent surface generated by the designer's instruction to deform the deformed surface, is obtained. Generated. The deformed surface extended surface eA1b surface is a surface trimmed from the infinitely extended surface of the deformed deformed surface A1b surface, and thus is a surface that is an extended surface of the deformed deformed surface A1b surface and can be expressed by a gradient surface. is there.

  The surface that connects the separation between the deformed deformed surface A1b surface and other adjacent surfaces (A4 surface and A6 surface) and the deformed deformed surface A1b surface can be similarly generated.

[Third Embodiment]
In the method shown in the first embodiment and the second embodiment, when the boundary line between the deformation surface and the adjacent surface is separated and the deformation surface and the adjacent surface do not intersect with each other, the separation is connected. Surfaces were generated and useful new design data was generated. Furthermore, the design data after the deformation according to the deformation surface deformation instruction is not useful as an article shape as it is, and the boundary line between the deformation surface and the adjacent surface is spaced apart and adjacent to the deformation surface as the case where correction is necessary. The plane may intersect. For example, as shown in FIG. 23, when the deformed surface A1 surface of the article A is deformed into the A1d surface by deformation in the drawing direction, the boundary line is separated when focusing only on the deformed deformed surface A1d surface and the adjacent surface A6 surface. The deformed deformation surface A1d surface and the adjacent surface A6 surface intersect each other. When the surfaces intersect with each other in this way, the region protruding from the intersection line is generally an unnecessary surface as a surface constituting a new article shape. Therefore, in the design data generation system 1 according to the third embodiment of the present invention, the deformed deformed surface and the adjacent surface intersect in this way, and the deformed deformed surface or the adjacent surface is the intersection line and its When the extended line is divided into a protruding area that includes the boundary line and a maintenance area that does not include the boundary line, the protruding area is erased, and a matching surface is generated in which the maintaining area is aligned with this intersection line. Generate design data of a new shape.

  FIG. 24 shows that the deformed deformation surface and the adjacent surface intersect with each other, and the deformed deformation surface or the adjacent surface includes a protruding area including a boundary line by this intersection line and its extension line, and a maintenance area not including the boundary line. 12 is a flowchart schematically showing an example of an article design method according to the third embodiment in the design data generation system 1 in the case of being divided into two. In the following, a new article shape design data generation method using the separated connection by extending the surface will be described with reference to the configuration of the design data generation system 1 shown in FIG.

  As in the first embodiment, the design data acquisition unit 3 acquires design data (S102), and the deformation instruction acquisition unit 4 acquires a deformation instruction from a designer or the like (S104). Here, the deformed surface A1d surface and the adjacent surface A6 surface after deformation when the deformed shape according to the deformation instruction of the deformed surface is a shape by changing the drawing direction of the deformed surface A surface shown in FIG. An example of the intersection with will be described. FIG. 25 is a diagram showing an intersection relationship between the deformed surface A1d after deformation and the adjacent surface A6 as viewed from the s direction in FIG. Here, in order to show application to a general surface shape other than the gradient surface for correcting the ridge line in the design data generation method according to the third embodiment, the deformed surface A1d surface and the adjacent surface A6 surface are not gradient surfaces. The ridgeline is curved.

  In the third embodiment, first, when the boundary identification information providing unit 27 intersects the deformed deformed surface and the adjacent surface, the boundary between the deformed surface and the adjacent surface specified by the designer's deformation instruction. The boundary identification information is given to the line (S130). In the example shown in FIG. 24, the boundary line identification information adding unit 27 adds boundary line identification information to the boundary line EL1 between the deformed surface A1 and the adjacent surface A6.

  Here, the provision of boundary line identification information refers to the coordinate information of the boundary line and the movement information corresponding to the boundary line of the deformation instruction to the deformation surface in the RAM 12 and the storage device 13 of the design data generation system 1. Are associated and stored. The coordinate information of the boundary line is the coordinate of the locus of the boundary line determined based on the design data acquired by the design data acquisition unit 3 and the deformation instruction from the designer or the like acquired by the deformation instruction acquisition unit 4. Further, the movement information is derived by the deformation means 22 based on the design data and the deformation instruction for the deformation surface acquired by the deformation instruction acquisition unit 4. Similar to the movement information of the boundary nodes described in the second embodiment, the movement information of the boundary line can be derived from the deformation instruction. Since the boundary line is stored in association with the coordinate information of the boundary line and the movement information corresponding to the boundary line of the deformation instruction to the deformation surface, the boundary line after the deformation corresponding to the boundary line before the deformation is stored. A line on the deformation surface can be derived.

  Next, as in the first embodiment, the deformation means 22 deforms the deformation surface according to the deformation instruction (S132). Next, as shown in FIG. 25 (a), the protruding area erasing means 29 intersects the deformed deformed surface A1d surface and the adjacent surface A6 surface, and the adjacent surface A6 surface is the intersection line LI61 and its extension line. When the eLI 61 divides the adjacent surface protruding area pA6 surface including the boundary line EL1 into the adjacent surface maintaining area hA6 surface not including the boundary line EL1, the adjacent surface protruding area pA6 surface is determined based on the boundary line identification information. Erasing is performed (S134). Hereinafter, erasing of the adjacent surface protrusion area pA6 based on the boundary line identification information will be described. FIG. 25B is a diagram illustrating the adjacent surface A6 viewed from the t direction in FIG. First, the protruding area erasing means 29 primarily stores the intersection line LI61 between the infinitely extended surface of the adjacent surface A6 and the infinitely extended surface of the deformed surface A1d and the extended line eLI61 in the RAM 12 or the storage device 13. It is derived based on the design data and the data defining the A1d surface. The protruding area erasing means 29 primarily stores data such as the coordinates of the derived intersection line LI61 and its extension line eLI61 in the RAM 12 or the storage device 13. Next, of the adjacent surface A6 surface, the design data stored primarily in the RAM 12 or the storage device 13 are the adjacent surface protrusion area pA6 surface defined by the intersection line LI61 and its extension line eLI61 and the boundary line EL1. It is defined based on data such as the coordinates of the intersection line LI61 and its extension line eLI61. Then, the protruding area erasing means 29 deletes the adjacent surface protruding area pA6 as surface data from the design data temporarily stored in the RAM 12 or the storage device 13, and only the adjacent surface maintaining area hA6 that does not include the boundary line EL1. Leave as surface data in design data.

  If a mesh node is provided on the adjacent surface, the protruding area erasing means 29 determines whether the mesh node is in the protruding area, the design data primarily stored in the RAM 12 or the storage device 13 and The mesh nodes in the protruding area may be deleted by deriving the data based on the data defining the A1d surface, the coordinate information of the mesh nodes, and the like. In this case, the surface defined by the mesh nodes that have not been erased is the connection surface maintaining region.

  Further, although the mesh nodes in the protruding area are deleted, these mesh nodes may be moved to corresponding points on the intersection line or corresponding points on the maintenance area, respectively. For example, the ratio of the distance from the end point on the boundary line can correspond to the point having the same ratio of the distance from the end point on the intersection line.

  Next, as shown in FIG. 25 (b), the ridge line matching means 30 connects the ridge lines BL6m and BL6n connected to the boundary line EL1 of the adjacent surface maintaining area hA6 to the end points EP61da and EP61db of the intersection line LI61. Corrections are made to match each other (S136). Here, the alignment of a ridge line to a predetermined point means that the ridge line that is the outer edge line of the surface is deformed so that one end point of the ridge line is fixed and the other end point coincides with the predetermined point. It means making it happen. For example, the ridge line is deformed by, for example, providing nodes on the ridge line at a predetermined interval, setting the vector from the other end point to the predetermined point, one distance from the one end point to the distance along the ridge line of the other end point. Each line is moved by a vector divided by the ratio of the distance along the edge line from the end point to the node, and the line defined by the series of nodes after the movement can be used as the matching edge line. In the above example, the other end point is made to coincide with a predetermined point and the entire shape element of the original ridge line is held, but the shape element from one end point to the intersection line and its extension line is held. Also good. In this case, by using the intersection of the ridge line and the intersection line or its extension line instead of the other end point, it is possible to derive a matching ridge line that holds the shape element from the one end point to the intersection line and its extension line. it can.

  This adjacent surface ridge line correction is performed based on the design data and the data of the intersection line LI 61 that are primarily stored in the RAM 12 or the storage device 13. In the example of the adjacent surface maintaining area hA6 surface shown in FIG. 25B, the ridgeline BL6m passes through the end point EP61da of the intersection line LI61 and is aligned with the end point EP61da of the intersection line LI61 without correction. There is no need to correct it. Since one ridge line BL6n does not pass through the end point EP61db of the intersection line LI61, the other edge point of the ridge line after the deformation is deformed so as to coincide with the end point EP61db of the intersection line LI61 to derive the alignment ridge line BL6na.

  Next, the matching connection adjacent surface generation means 31 sets the region defined by the corrected adjacent surface alignment ridge line BL6na and the intersection line LI61 among the adjacent surface maintaining region hA6 surface as the matching connection adjacent surface hA6 surface. The adjacent surface maintaining area hA6 surface other than the matched connection adjacent surface hA6A surface (the hatched region in FIG. 25C) is deleted, and the connection adjacent surface hA6a surface connected to the intersection line LI61 is generated (S138). In the above description, attention has been paid to the adjacent surface A6 surface that intersects the deformed deformation surface A1b surface, but the matching connection adjacent surface generation means 31 is a protruding surface of the adjacent surface A2 surface that intersects the deformed deformation surface A1b surface. Are also erased by the same method, and the matching connection adjacent surface hA2 surface having no overhanging region is generated.

  Through the above steps, generation of design data having a new shape including the deformed deformed surface A1b surface, the matching connection adjacent surface hA6 surface, and the hA2 surface is completed (S140). The design data having a new shape including the deformed deformation surface A1b surface, the matching connection adjacent surface hA6 surface, and the hA2 surface generated in this way is subjected to image signal processing and displayed on the display unit 5.

  According to this method, even when the deformation instruction of the designer or the like intersects the deformed deformed surface and the adjacent surface to form a protruding region protruding from the intersecting line, an unnecessary protrusion as the design shape The area can be automatically erased, and design data having a useful shape can be efficiently created.

  In the step of aligning the ridge line described above with the intersection line (S136), the ridge lines BL6m and BL6n are corrected so as to be aligned with the end points EP61da and EP61db closer to the intersection line LI61, respectively. The ridge line is preferably aligned with the end point of the intersection line having a predetermined relationship with the ridge line. For example, in the deformed deformed surface A1d surface and the adjacent surface A6 surface shown in FIG. 25A, when the deformed deformed surface A1d surface is rotated 180 degrees (inverted) before the deformed, the ridge line BL6m and BL6n respectively align ridge lines extending from one of the boundary line end points before the deformation, and the deformed surface after the deformation and the adjacent surface sandwich the intersection line, It is preferable to maintain the front / back relationship of the surface with the adjacent surface. In this way, in order to maintain the front-back relationship between the deformed surface before deformation and the adjacent surface, the boundary line identification information adding unit 27 of the design data generation system 1 in S130 ends the end points (EP61a and EP61b of the boundary line EL1). ) Is added to the boundary line end point identification information, and after the end of S132, the edge line matching unit 30 associates the intersection line end point that is close to the boundary line end point based on the boundary line end point identification information. In the example shown in FIG. 25A, the boundary line end point EP61a is associated with the closest intersection line end point EP61da among the intersection line end points EP61da and EP61db. Similarly, the ridge line matching means 30 associates the boundary line end point EP61b with the closest intersection line end point EP61db of the intersection line end points EP61da and EP61db. In this way, each intersection end point is associated with a boundary end point.

  Next, in the step of aligning the ridge line with the intersecting line (S136), the ridge line aligning means 30 replaces the ridge line of the deformed surface connected to the end point of the boundary line before the deformation with the intersection corresponding to the boundary line end point. Align to the line end point. In the example shown in FIG. 25B, the ridge line matching means 30 corrects the ridge line BL6n connected to the boundary end point EP61a so as to match the intersection line end point EP61db associated with the boundary end point EP61a. The ridge line matching means 30 corrects the ridge line BL6m connected to the other boundary end point EP61b so as to be aligned with the intersection line end point EP61da associated with the boundary end point EP61b. In this way, the boundary line identification information giving unit 27 gives the boundary line end point identification information to the end points of the boundary line, and the ridge line matching unit 30 makes the boundary line end point and the intersection line end point based on the boundary line end point identification information. By aligning the adjacent surface ridge line connected to this boundary line end point with the boundary line end point corresponding to this boundary line end point, the surface of the surface sandwiching the boundary line between the deformed surface before deformation and the adjacent surface It is possible to generate a matching connection surface in which the relationship between the front and back surfaces is maintained such that the line of intersection between the deformed surface after deformation and the adjacent surface is sandwiched.

  As described above, the matching to the intersection end point of the ridge line based on the boundary line end point identification information in the matching connection surface generation of the adjacent surface has been described. However, this ridge line matching can also be applied to the ridge line matching of the deformed surface. When applied to the matching connection surface of the deformation surface, the boundary line corresponding line derived by the boundary line corresponding ridge line deriving means 28 is used instead of the boundary line, and the boundary line corresponding ridge line end point is crossed instead of the boundary line end point. Correspond to the end point.

  In the correspondence between the intersection line end point and the ridge line based on the boundary line end point identification information, first, the boundary line end point or the boundary line corresponding ridge line end point is associated with the intersection line end point. Either of these correspondences determines the correspondence between the intersection line end point and the boundary line end point. Accordingly, which one is to be taken is selected as one, and this selection is made before the ridge line alignment correction step (S136), in which the deformation instruction acquisition unit 4 acquires a selection instruction input from the designer or the like. Then, based on the selection instruction, the correspondence relationship between the intersection line end point and the boundary line end point is derived.

  According to the above method, the protruding adjacent surface can be erased, but it is also preferable to erase the protruding region of the deformed surface after deformation. FIG. 26 is a flowchart schematically showing an example of a method of deleting a projected area of a deformed surface after deformation in the design data generating method according to the third embodiment of the present invention. In the following, a new article shape design data generation method using the separated connection by extending the surface will be described with reference to the configuration of the design data generation system 1 shown in FIG. In order to delete the projecting area of the deformed surface and generate the connection deformed surface, the design data acquiring unit 3 acquires the design data (S102) and the deformation instruction acquiring unit 4 in the same manner as the connection adjacent surface generating procedure. However, a deformation instruction is acquired from the designer or the like (S104). Next, the boundary line identification information giving means 27 gives boundary line identification information to the boundary line between the deformation surface and the adjacent surface specified by the designer's deformation instruction (S130), and the deformation means 22 is changed to the deformation surface. Is deformed according to the deformation instruction (S132).

  In the case of the connection adjacent surface generation, since the boundary line belongs to the connection surface, it was possible to derive the protruding area defined by the boundary line and the intersection line, but the protruding area in the connection deformation surface was derived. In order to do so, it is necessary to derive a boundary line corresponding ridge line on the deformed surface after deformation. Therefore, when the protruding area of the deformed surface is erased and the connection deformed surface is generated, the boundary line corresponding ridge line deriving unit 28 determines the boundary line corresponding ridge line EL1d corresponding to the boundary line EL1 in the deformed deformed surface A1d surface. The boundary line identification information and the deformation instruction document primarily stored in the RAM 12 or the storage device 13 and the deformation instruction information on the deformation surface A1 obtained by the section 4 and temporarily stored in the RAM 12 or the storage device 13 are obtained ( S133).

  Hereinafter, the projecting area erasing means 29 erases the deformed surface projecting area using the boundary line corresponding edge line EL1d instead of the boundary line EL1 in the case of generating the connection adjacent surface (S134). Further, the ridge line matching means 30 corrects the ridge lines that have been connected to the boundary line corresponding ridge lines of the deformed surface maintaining region so as to be aligned with the end points EP61da and EP61db of the intersection line LI61, respectively (S136). Finally, the matching connection surface generating means 31 sets the region defined by the corrected deformation surface alignment ridge line and the intersection line LI61 among the deformation surface maintaining regions as the matching connection deformation surface, and other than the matching connection deformation surface. The deformation surface maintaining area is erased, and a connection deformation surface connected to the intersection line LI61 is generated (S138).

  If the design data is composed of mesh nodes, after this connected deformation surface is completed, the patches divided by this mesh node are integrated to obtain design data that represents the surface for each gradient surface Is preferred. This patch integration processing can be performed by a method widely known in CAD. The new design data is subjected to image signal processing by the calculation unit 2, and the shape indicated by the design data is displayed on the display unit 5. Thus, the generation of design data is completed (S140).

  According to the above method, even if the deformation instruction of the designer etc. crosses the deformed deformed surface and the adjacent surface, the protruding area of the deformed surface protruding from the intersecting line is automatically deleted. It is possible to efficiently create design data having a useful shape with no protruding area on the deformation surface.

  Even if the deformation instruction by the designer or the like intersects the deformed deformation surface and the adjacent surface by the generation of the connection adjacent surface described above and the generation of the connection deformation surface, from the intersection line The protruding area that protrudes can be automatically deleted, and design data of a new shape and a useful shape can be efficiently created.

  In the above description, the generation of the connection adjacent surface and the connection deformation surface is assumed to be independent. For example, the boundary node of the adjacent surface first moves to the corresponding point on the intersection line, and the adjacent surface protrusion area is deleted. In this case, the boundary node corresponding point on the edge corresponding to the boundary line of the deformed deformation surface is moved to the corresponding boundary node on the intersection line, and the line defined by the series of the boundary node corresponding points is connected to the outer edge of the connecting deformation surface. As the defining line, the deformation surface protrusion region may be erased.

  In this way, when the deformed deformed surface and the adjacent surface intersect with each other, whether to delete the deformed deformed surface and the protruding area of the adjacent surface is determined by the design data and the deformation instruction acquired by the design data acquiring unit 3 Based on the deformation instruction acquired by the acquisition unit 4, the protruding area erasing unit 29 may determine, or the designer or the like refers to the display unit 5 to determine the cross relationship between the deformation surface after deformation and the adjacent surface. It is also possible to make a determination and instruct the deletion of the protruding area via the deformation instruction acquisition unit 4 and the deformation instruction acquisition unit 4 acquires the instruction. An instruction to delete the protruding area based on which judgment is acquired by the deformation instruction acquisition unit 4 from the designer or the like prior to deformation of the deformation surface, and the RAM 12 and the storage device 13 of the design data generation system 1. Etc. in advance. In accordance with the temporarily stored instruction data, the protruding area erasing means 29 calculates design data.

  In the above description, the second embodiment and the third embodiment have been described independently. However, it is preferable to generate new design data by combining the second embodiment and the third embodiment. . A method for generating design data of a new shape combining the second embodiment and the third embodiment is different from FIG. 20 in the f-plane cross section of the shape shown in FIG. 17 as shown in FIG. An example will be described. First, by the method of the second embodiment, the deformed surface A1b surface is extended to the adjacent surface A2 surface, and the distance between the deformed deformed surface A1b surface and the adjacent surface A2 surface is connected. When the adjacent surface A2 surface and the deformed surface A1b surface extended in a plane are in the relationship as shown in FIG. 27B, the region including the boundary node NP23 is an protruding region from the intersection line LI21 of the adjacent surface A2 surface. . In this case, the protruding area is erased by applying the method of the third embodiment. The connection surface generation unit 24 determines which surface is to be extended as a surface after the deformation and whether the separation is eliminated or not based on the design data and the deformation instruction. Thus, by using the design data generation method of the second embodiment and the third embodiment, even when the deformed deformed surface and the adjacent surface are separated from each other, generation of a surface that is extended as a surface is generated. And the protrusion area can be automatically deleted, the separation can be eliminated, and design data having a useful shape without the protrusion area can be efficiently generated.

[Apply to non-gradient surfaces]
The design data generation method according to the first, second, and third embodiments described above is for the design data of a new shape expressed by a gradient surface by deformation based on the design data expressed by the gradient surface. Although generation has been described as an example, the present invention is not limited to design data expressed by a gradient surface, but can be applied to generation of a new surface by deformation of a general surface in CAD.

  Hereinafter, application of the design data generation method according to the first embodiment of the present invention to design data composed of surfaces other than the gradient surface will be described. Here, as shown in FIG. 28 (a), as shown in FIG. 28 (b), the H1 surface, the H2 surface, and the design data of the shape H composed of the H1, H2, and H3 surfaces. A case where the deformation is performed by moving the H3 surface as the deformation surface will be described as an example. The H1, H2, and H3 planes are not gradient planes, but are planes defined by the designated coordinates of the four corner points of each plane. The H1 plane x after the movement of the H1 plane is separated from the H2x plane after the movement of the H2 plane, the H1 plane x is separated from the H3x plane after the movement of the H3 plane, and the H2x plane and the H3x plane are separated from each other.

  The connection surface generation unit 24 generates a connection surface that connects the separation of the surfaces caused by the deformation of the deformation surface performed according to the deformation instruction of the designer or the like according to the design data generation flow shown in FIG.

  First, before the deformation surface is deformed according to the deformation instruction of the designer or the like, the boundary node providing means 21 is based on the acquired deformation instruction information and design data, and the boundary line ( L12, L23, and L13) are given boundary nodes at predetermined intervals, respectively (S106).

  Next, the deformation means 22 of the design data generation system 1 deforms the deformation surfaces H1, H2, and H3 according to the deformation instruction (S108) as shown in FIG. Corresponding point deriving means 23 derives corresponding points corresponding to the boundary nodes on the deformation surfaces (H1, H2, and H3 surfaces) (S110). Here, as an example, NB12n on the deformation surface H1x after deformation and Nb12m on the deformation surface H2x surface corresponding to the boundary node HB12 are shown, and further, the deformation surface after deformation corresponding to the boundary node NB14 is shown. NB14n on the H1x plane, NB14m on the deformed deformed surface H2x, and NB141 on the deformed deformed surface H3x are shown. Next, as shown in FIG. 28 (c), the connection surface generating means 24 is a series of lines connecting the boundary node corresponding points corresponding to the boundary nodes (for example, NB12n and NB12m, and NB14n, NB14m, and NB141). The connection surface H12 surface, H23 surface, and H123 surface defined by are generated (S112). By including the connection surface generated in this way in the surface that constitutes a new article shape, design data of the shape that eliminates the separation between the surfaces caused by the deformation performed according to the deformation instruction of the designer etc. is generated can do. Even when boundary nodes belonging to three or more surfaces before deformation are separated by deformation, such as the boundary node HB14, boundary node corresponding points are derived on these three or more separated surfaces, It is possible to generate a connection surface H123 defined by a series of lines connecting these boundary node corresponding points.

  In the boundary node corresponding point deriving step (S110), the boundary node corresponding point deriving means 23 derives a boundary node corresponding point on the deformed deformed surface, and a series of lines connecting the boundary node and the boundary node corresponding point. Although the connection surface is generated, the boundary node corresponding point deriving unit 23 derives the end point opposite to the boundary line of the ridge line connected to the boundary line as the boundary node corresponding point on the adjacent surface based on the design data. The surface defined by the continuous line connecting the boundary node corresponding point on the adjacent surface and the boundary node corresponding line on the deformed surface after the deformation is given with priority given to the shape of the deformed deformed surface. It is also possible to obtain design data of a shape that eliminates the separation between the deformed surface and the adjacent surface.

  For example, before deformation, the C plane and the D plane are adjacent to each other as shown in FIG. 29 (a), and boundary nodes (C1, C2, C3) are given on the boundary line, so that the designer, etc. It is assumed that the deformation surface D has been deformed as shown in FIG.

  When the deformation instruction acquisition unit 4 acquires a deformation surface priority joint surface instruction from a designer or the like, the boundary node corresponding point derivation unit 23 determines the boundary lines of the ridge lines LCa and LCb connected to the boundary line on the adjacent surface C surface. Based on the design data, C1 ′ is derived as a point corresponding to the boundary node C1, and C3 ′ is derived as a point corresponding to the boundary node C3. Next, the connection surface generation unit 24 connects C1 ′ and D1 point corresponding to the C1 point, which correspond to the corresponding boundary node corresponding points, connects C3 ′ and D3 corresponding to the C3 point, and is defined by a line connecting them. A plane C ′ to be generated is generated. Thus, it is possible to generate design data of a new shape that forms a connection surface that is deformed so as to extend the C surface that is the adjacent surface and connects the space with the separated D surface.

  Further, the protrusion area elimination in the design data generation method according to the third embodiment of the present invention can also be applied to general surfaces other than the gradient surface. A description will be given of the application of the protruding region erasing to design data composed of general surfaces other than the gradient surface. Here, a description will be given by taking as an example a component E that is configured by the F1 surface and the G1 surface, and the shape indicated by the design data acquired by the design data acquiring unit 3 is shown in 30 (a). The F1 plane and the G1 plane are not gradient planes, but are planes defined by a plane defined by a predetermined function and the coordinates of four corners on the plane. Assuming that the deformation instruction acquisition unit 4 has acquired a deformation instruction for deforming the part E into the F1 surface shown in FIG. 30B using the F1 surface as a deformation surface, outside the portion in contact with the F1a surface in the G1 surface. The Ga region is a surface protruding from a new shape desired by the designer. In such a case, first, similarly to the protruding area deletion described in the design data generation method of the second embodiment, after obtaining a deformation instruction from the designer or the like (S104), the boundary line identification information adding unit 27 The boundary line identification information is given to the boundary line LF1G between the deformed surface F1 surface and the adjacent surface G1 surface defined by the designer's deformation instructions (S130). Next, as shown in FIG. 30B, the F1 surface is deformed to the F1a surface based on the deformation instruction acquired by the deformation instruction acquiring unit 4 from the designer or the like (S132). Next, the adjacent surface protrusion area G1a area is erased based on the boundary line identification information (S134). In the example of the shape shown in FIG. 30B, since the ridge line connected to the boundary line of the deformed deformation surface F1a is matched to the configuration, the ridge line connected to the boundary line is corrected to match the intersecting line. (S136) No.

  The calculation unit 2 performs image signal processing on the design data after the completion of the instruction deformation shape correction process, and causes the display unit 5 to display the shape after removing the protruding regions of the part F shape and the G shape. As described above, the removal of the protruding region in the second embodiment of the present invention is not limited to the design data expressed by the gradient surface, but is applied to the generation of design data having a new shape by the deformation of a general surface in CAD. it can.

  In the description of the design data generation method according to the first embodiment of the present invention, the case where the deformation instruction acquisition unit 4 acquires a deformation instruction for separating two or more surfaces is described as an example. The design data generation method according to the first embodiment of the present invention is useful for the modification of adding a step to the reference shape.

  FIG. 31 is a diagram showing an application example of the design data generation method according to the first embodiment of the present invention to the case where the I2 plane is divided and the step is provided in the shape constituted by the I1 plane and the I2 plane. is there. As shown in FIG. 31A, it is assumed that the deformation instruction acquisition unit 4 has acquired a deformation instruction to divide the I2 surface into a I2a surface and an I2b surface along a dotted line from a designer or the like (S104). . Here, as an example of deformation, as illustrated in FIG. 31C, it is assumed that the deformation instruction acquisition unit 4 has acquired a deformation instruction for lifting the I2a surface upward from a designer or the like. Next, the boundary node assigning means 21 assigns boundary nodes at predetermined intervals on the boundary line L12 between the I2a plane and the I2b plane and on the boundary line L12a between the I2a plane and the I1 plane (S106). Here, as shown in FIG. 31 (b), four boundary nodes NB1, NB2, NB3, and NB4 are generated on the boundary line L12, and 2 of NB5 and NB6 in addition to NB1 on the boundary line L12a. An example of generating two boundary nodes is shown.

  Next, as shown in FIG. 31 (c), the deformation means 22 performs a deformation for lifting the deformation surface I2a upward according to the deformation instruction (S108), and the boundary node corresponding point deriving means 23 Corresponding points (NB1a, NB2a, NB3a, NB4a, NB5a, and NB6a) corresponding to the boundary nodes (NB1, NB2, NB3, NB4, NB5, and NB6) are derived on the deformation surface I2ax (S110).

  Then, the connection surface generation means 24 includes the boundary nodes (NB1, NB2, NB3, and NB4) of the adjacent surfaces and the boundary node corresponding points (NB1a, NB2a, NB3a) of the deformed deformation surface I2ax surface corresponding to the boundary nodes. , And NB4a), a connection surface I2axb surface defined by a series of lines connecting them is generated (S112).

  Here, a region I1ax indicated by oblique lines defined by the deformed surface I2ax surface and the connecting surface I2axb surface after the deformation of the I1 surface has a shape constituted by the I1 surface, the I2b surface, the I2ax surface, and the I2axb surface. If it is an unnecessary protruding area, boundary line identification information is given to the boundary line L12a before the deformation surface I2a is deformed (S130), and the protruding area erasing means 29 performs the adjacent surface I1 after the deformation of the deformed surface. A line LI2ax between the surface and the deformed deformed surface I2ax surface is derived based on the design data and a function that defines the I2ax surface that is primarily stored in the RAM 12 or the storage device 13, and further, the adjacent surface I1 surface The intersection line L12ax with the connection surface I2axb surface is used as design data and a function that defines the L12axb surface that is primarily stored in the RAM 12 or the storage device 13. Zui derive, erase the surface design data of the adjacent surfaces I1 as a region projected area I1ax partitioned by the the intersection line L12ax and L12axb. According to the present invention, in the case where a deformation is performed to provide a step in the reference shape that was one surface in this way, a surface that connects the step can be automatically generated.

  Further, in the example of FIG. 31C, the deformation surface I2a is lifted up as an example. Next, as shown in FIG. 31D, the generation of the connection surface in the downward deformation is described. . When the deformed surface I2a is lowered to become the I2ay surface, an I2ayb surface that connects the separation between the I2ay surface and the adjacent surface I2b is generated in the same manner as the lifting deformation. On the other hand, in the case of this deformation, the I1 surface and the deformation surface I2a adjacent to each other before the deformation are separated by deformation of the deformation surface I2a. Also in this separation, the boundary node providing means 21 generates boundary nodes NB1, NB5, and NB6 on the boundary line L12a, and the boundary node corresponding point deriving means 23 is the boundary node corresponding point on the deformed surface after the deformation. (NB1y, NB5y, and NB6y) are derived, and the connection surface generation unit 24 generates a connection surface I1ay surface by defining the surfaces defined by the lines connecting the boundary node boundary node corresponding points.

  As described above, the connection surface and the extension surface are generated based on the design data, the deformation instruction, and the identification information given to the boundary node, and the protrusion area is erased based on the design data, the deformation instruction, and the boundary line identification information. Since the edge line can be aligned, the design data generation method according to the present invention can be applied not only to the gradient surface but also to a general surface, and the generation of design data for a new article shape can be applied to an existing article. This can be done efficiently based on the shape design data.

It is a block diagram which shows the structure of the design data generation system of this invention. It is a block diagram which shows an example of the hardware constitutions used for the design data generation system of this invention. It is a flowchart which shows roughly the design data generation method which concerns on the 1st Embodiment of this invention. It is a figure which shows an example of the reference | standard shape of a deformation | transformation. It is a figure for demonstrating a reference line deformation | transformation. It is a figure for demonstrating the extraction direction change. It is a figure for demonstrating gradient angle change. It is a figure which shows the example of border node provision. It is a figure which shows the relationship between a reference line, a drawing direction vector, gradient angle (theta), and gradient plane normal vector n. It is a figure explaining the movement of the outer edge node in a deformation | transformation object surface. It is a figure for demonstrating the position of the deformation surface outer edge line after a movement. It is a figure which shows the position with respect to the deformation | transformation reference line of the outer edge node by a drawing direction change. It is a figure for demonstrating the movement from the outer edge node P before gradient angle change to the point Pc by gradient angle change. It is a figure which shows the relationship with the point which is the movement destination by the gradient angle change instruction | indication of the outer edge node P before the movement on a gradient plane. It is a figure which shows an example of the mesh node production | generation in a deformation | transformation surface. It is a figure which shows the movement of a mesh node. It is a figure which shows an example of the shape where the deformation | transformation surface after a deformation | transformation and the adjacent surface separated. It is a figure for demonstrating the production | generation of a connection surface. It is a flowchart which shows roughly an example of the design data generation method which concerns on the 2nd Embodiment of this invention. It is a figure which shows the cross section of an example of the shape where the deformation | transformation surface after a deformation | transformation and the adjacent surface left | separated. It is a figure which shows an example of an extension surface and a connection surface. It is a figure which shows an example of an extension surface and a connection surface. It is a figure which shows an example of the intersection of the deformation | transformation surface after a deformation | transformation, and an adjacent surface. It is a flowchart which shows roughly an example of the design data generation method which concerns on the 3rd Embodiment of this invention which erase | eliminates the protrusion area | region of an adjacent surface. It is a figure for demonstrating deletion of a protrusion area | region. It is a flowchart which shows roughly an example of the design data generation method which concerns on the 3rd Embodiment of this invention which erase | eliminates the protrusion area | region of the deformation surface after a deformation | transformation. It is a figure which shows an example of the cross section of the space | interval with the deformation | transformation surface after a deformation | transformation, and an adjacent surface. It is a figure for demonstrating the application to the design data comprised by surfaces other than the gradient surface of the connection surface production | generation in the design data production | generation method of the 1st Embodiment of this invention. It is a figure for demonstrating the production | generation of the connection surface which gave priority to the shape of the deformation surface after a deformation | transformation. It is a figure for demonstrating the application to the design data comprised by surfaces other than the gradient surface of the protrusion area | region elimination in the production | generation method of the design data of the 3rd Embodiment of this invention. It is a figure which shows an example of application of the design data generation method which concerns on the 1st Embodiment of this invention in the case of providing a level | step difference.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Design data generation system 2 Calculation part 3 Design data acquisition part 4 Deformation instruction acquisition part 5 Display part 10 CPU, 11 ROM, 12 RAM, 13 Storage device, 14 Input device, 15 Display device, 21 Boundary node Giving means, 22 Deformation means, 23 Boundary node corresponding point derivation means, 24 Connection surface generation means, 25 Intersection line derivation means, 26 Extension surface definition means, 27 Boundary line identification information provision means, 28 Boundary line corresponding ridge line derivation means, 29 Projection area erasing means, 30 ridge line alignment means, 31 alignment connection surface generation means.

Claims (12)

A design data generation system that generates design data of a new shape by performing deformation processing on design data of an article shape,
A design data acquisition unit that acquires design data for defining an article shape in accordance with an input instruction;
A deformation instruction acquisition unit for acquiring a deformation instruction for a surface constituting the article shape based on the acquired design data in response to an input;
A calculation unit that performs a deformation process on the design data in accordance with the acquired deformation instruction;
With
The deformation instruction acquisition unit acquires a deformation surface designation for specifying a deformation surface and a deformation instruction for the deformation surface as a deformation instruction,
The computing unit is
(1) Boundary node providing means for providing boundary nodes at a predetermined interval on a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface;
(2) deformation means for deforming the deformation surface according to the deformation instruction;
(3) A boundary node corresponding point deriving unit on the deformation surface for obtaining a boundary node corresponding point on the deformation surface corresponding to the boundary node on the deformation surface after the deformation;
(4) An intersection line deriving means for obtaining an intersection line between the infinitely extended surface of the adjacent surface and the infinitely extended surface of the deformed surface after deformation,
(5) A boundary ridge line extending a boundary connection ridge line connected to the boundary line of the adjacent surface to the intersection line, the boundary line, and the adjacent line extending from the infinitely extended surface of the adjacent surface by the boundary line An adjacent surface extension surface defining means for defining a surface;
(6) Inter-boundary boundary node corresponding point deriving means for obtaining on-intersection boundary node corresponding points corresponding to the boundary nodes on the intersection line included in the adjacent surface extension surface;
(7) Deformation surface connection surface generating means for generating a deformation surface connection surface defined by a series of lines connecting the deformation surface boundary node corresponding points and the intersection boundary boundary node corresponding points,
Have
A design data generation system that generates design data having a new shape including the adjacent surface, the adjacent surface extension surface, the deformed deformed surface, and the deformed surface connecting surface. A design data generation system that generates design data of a new shape by performing deformation processing on design data of an article shape,
A design data acquisition unit that acquires design data for defining an article shape in accordance with an input instruction;
A deformation instruction acquisition unit for acquiring a deformation instruction for a surface constituting the article shape based on the acquired design data in response to an input;
A calculation unit that performs a deformation process on the design data in accordance with the acquired deformation instruction;
With
The deformation instruction acquisition unit acquires a deformation surface designation for specifying a deformation surface and a deformation instruction for the deformation surface as a deformation instruction,
The computing unit is
(1) Boundary node providing means for providing boundary nodes at a predetermined interval on a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface;
(2) deformation means for deforming the deformation surface according to the deformation instruction;
(3) A boundary node corresponding point deriving unit on the deformation surface for obtaining a boundary node corresponding point on the deformation surface corresponding to the boundary node on the deformation surface after the deformation;
(4) An intersection line deriving means for obtaining an intersection line between the infinitely extended surface of the adjacent surface and the infinitely extended surface of the deformed surface after deformation,
(5) A boundary ridge line extending a boundary connection ridge line connected to the boundary line of the deformed surface after deformation to the intersecting line, the boundary line, and the intersecting line from an infinitely extended surface of the deformed surface Deformation surface extension surface defining means for defining the deformation surface extension surface;
(6) On-intersection boundary node corresponding point deriving means for obtaining on-intersection boundary node corresponding points corresponding to the boundary nodes on the intersection line;
(7) Adjacent surface connection surface generating means for generating an adjacent surface connection surface defined by a series of lines respectively connecting the boundary node and the boundary node corresponding point on the intersection line;
Have
A design data generation system that generates design data having a new shape including the adjacent surface, the deformed surface after deformation, the deformed surface extension surface, and the adjacent surface connection surface. A design data generation system that generates design data of a new shape by performing deformation processing on design data of an article shape,
A design data acquisition unit that acquires design data for defining an article shape in accordance with an input instruction;
A deformation instruction acquisition unit for acquiring a deformation instruction for a surface constituting the article shape based on the acquired design data in response to an input;
A calculation unit that performs a deformation process on the design data in accordance with the acquired deformation instruction;
With
The deformation instruction acquisition unit acquires a deformation surface designation for specifying a deformation surface and a deformation instruction for the deformation surface as a deformation instruction,
The computing unit is
(1) Boundary line identification information providing means for providing boundary line identification information to a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface;
(2) deformation means for deforming the deformation surface according to the deformation instruction;
(3) The deformed surface after the deformation and the adjacent surface intersect, and the adjacent surface includes an adjacent surface protruding region including the boundary line by the intersection line and an extension line thereof, and an adjacent surface not including the boundary line. When divided into maintenance areas, based on the boundary line identification information, adjacent surface protrusion area erasing means for deleting the adjacent surface protrusion area,
(4) Adjacent surface ridge line aligning means for correcting the ridge line of the adjacent surface maintaining region connected to the intersecting line and its extension line so as to align with an end point of the intersecting line;
(5) Of the adjacent surface maintaining region, an aligned connection adjacent surface generating means for generating an aligned connection adjacent surface defined by the corrected adjacent surface ridge line and the intersecting line;
Have
Generating design data of a new shape including the deformed surface after the deformation and the matching connection adjacent surface ;
The boundary line identification information giving means gives boundary line end point identification information to the end points of the boundary line,
The adjacent surface ridge line matching means associates the boundary line end point with the intersection line end point based on the boundary line end point identification information, and connects the boundary line end point to the boundary line end point corresponding to the boundary line end point. A design data generation system characterized by aligning the adjacent surface ridge lines . A design data generation system that generates design data of a new shape by performing deformation processing on design data of an article shape,
A design data acquisition unit that acquires design data for defining an article shape in accordance with an input instruction;
A deformation instruction acquisition unit for acquiring a deformation instruction for a surface constituting the article shape based on the acquired design data in response to an input;
A calculation unit that performs a deformation process on the design data in accordance with the acquired deformation instruction;
With
The deformation instruction acquisition unit acquires a deformation surface designation for specifying a deformation surface and a deformation instruction for the deformation surface as a deformation instruction,
The computing unit is
(1) Boundary line identification information providing means for providing boundary line identification information to a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface;
(2) deformation means for deforming the deformation surface according to the deformation instruction;
(3) Boundary line corresponding ridge line deriving means for obtaining a boundary line corresponding ridge line corresponding to the boundary line on the deformed surface after the deformation based on the boundary line identification information;
(4) The deformed deformed surface and the adjacent surface intersect, and the deformed deformed surface includes a deformed surface protruding region including the boundary line corresponding ridge line by the intersection line and an extension line thereof, and the boundary line. When divided into a deformed surface maintaining area that does not include the corresponding ridge line, based on the boundary line identification information, deformed surface protrusion area erasing means for erasing the deformed surface protrusion area,
(5) Deformation surface ridge line alignment means for correcting the ridge line of the deformation surface maintenance region connected to the intersection line and its extension line so as to align with an end point of the intersection line;
(6) Of the deformation surface maintaining region, an alignment connection deformation surface generation means for generating an alignment connection deformation surface defined by the corrected deformation surface ridge line and the intersection line;
Have
Generating design data of a new shape including the adjacent surface and the matching connection deformation surface ;
The boundary line identification information giving means gives boundary line end point identification information to the end points of the boundary line,
The deformation surface ridge line matching means associates the boundary line end point with the intersection line end point based on the boundary line end point identification information, and connects the boundary line end point to the boundary line end point corresponding to the boundary line end point. A design data generation system characterized by aligning the deformed surface ridge line . A design data generation method for generating design data of a new shape by performing deformation processing on design data of an article shape,
A design data acquisition step, wherein the design data acquisition unit acquires design data defining the article shape according to an input instruction;
A deformation instruction acquisition unit acquires a deformation surface specification for specifying a deformation surface and a deformation instruction for the deformation surface according to an input as a deformation instruction for the surface constituting the article shape based on the acquired design data. A transformation instruction acquisition step;
A calculation unit that provides a boundary node at a predetermined interval on a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface;
A deformation step in which the arithmetic unit deforms the deformation surface according to the deformation instruction;
A step of deriving a boundary node corresponding point on the deformation surface for obtaining a boundary node corresponding point on the deformation surface corresponding to the boundary node on the deformation surface after the deformation;
The calculation unit is an intersection line derivation step for obtaining an intersection line between the infinitely extended surface of the adjacent surface and the infinitely extended surface of the deformed surface after the deformation,
The calculation unit is adjacent to an infinite extension surface of the adjacent surface by a boundary ridge line extending the boundary connection ridge line connected to the boundary line of the adjacent surface to the intersection line, the boundary line, and the intersection line. An adjacent surface extension surface defining step for defining a surface extension surface;
On the intersection line included in the adjacent surface extension surface , the calculation unit obtains an intersection boundary node corresponding point on the intersection line corresponding to the boundary node,
The arithmetic unit includes a modified surface connecting surface generating step of generating a modified surface connection plane defined between the deformable surface on the boundary node corresponding point and the line of intersection on the boundary nodes corresponding points by a series of lines connecting each
Including
The design data, wherein the arithmetic unit generates design data having a new shape including the adjacent surface, the adjacent surface extension surface, the deformed deformed surface, and the deformed surface connecting surface. Generation method. A design data generation method for generating design data of a new shape by performing deformation processing on design data of an article shape,
A design data acquisition step, wherein the design data acquisition unit acquires design data defining the article shape according to an input instruction;
A deformation instruction acquisition unit acquires a deformation surface specification for specifying a deformation surface and a deformation instruction for the deformation surface according to an input as a deformation instruction for the surface constituting the article shape based on the acquired design data. A transformation instruction acquisition step;
A calculation unit that provides a boundary node at a predetermined interval on a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface;
A deformation step in which the arithmetic unit deforms the deformation surface according to the deformation instruction;
A step of deriving a boundary node corresponding point on the deformation surface for obtaining a boundary node corresponding point on the deformation surface corresponding to the boundary node on the deformation surface after the deformation;
The calculation unit is an intersection line derivation step for obtaining an intersection line between the infinitely extended surface of the adjacent surface and the infinitely extended surface of the deformed surface after the deformation,
The arithmetic unit extends an infinite extension of the deformed surface by a boundary ridge line extending the boundary connecting ridge line connected to the boundary line of the deformed deformed surface to the intersecting line, the boundary line, and the intersecting line. A deformation surface extension surface defining step for defining a deformation surface extension surface from the surface;
The calculation unit is a step of deriving intersection boundary line corresponding points corresponding to the boundary nodes corresponding to the boundary nodes, respectively.
The calculation unit generates an adjacent surface connection surface defined by a series of lines connecting the boundary node and the boundary node corresponding point on the intersection line, and an adjacent surface connection surface generation step,
Including
The design data, wherein the calculation unit generates design data having a new shape including the adjacent surface, the deformed surface after the deformation, the deformed surface extension surface, and the adjacent surface connecting surface. Generation method. A design data generation method for generating design data of a new shape by performing deformation processing on design data of an article shape,
A design data acquisition step, wherein the design data acquisition unit acquires design data defining the article shape according to an input instruction;
A deformation instruction acquisition unit acquires a deformation surface specification for specifying a deformation surface and a deformation instruction for the deformation surface according to an input as a deformation instruction for the surface constituting the article shape based on the acquired design data. A transformation instruction acquisition step;
A calculation unit, a boundary line identification information giving step for giving boundary line identification information to a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface;
A deformation step in which the arithmetic unit deforms the deformation surface according to the deformation instruction;
The arithmetic unit includes the deformed deformation surface and the adjacent surface intersecting, and the adjacent surface does not include the adjacent surface protruding region including the boundary line by the intersection line and its extension line, and the boundary line. When divided into adjacent surface maintaining regions, based on the boundary line identification information, adjacent surface protruding region erasing step for deleting the adjacent surface protruding region,
An adjacent surface ridge line alignment step for correcting the ridge line of the adjacent surface maintaining region connected to the intersection line and its extension line so as to align with the end point of the intersection line , the arithmetic unit ,
The operation unit generates a matching connection adjacent surface generation step for generating a matching connection adjacent surface defined by the corrected adjacent surface ridge line and the intersecting line in the adjacent surface maintenance region, and
Including
The calculation unit generates design data of a new shape including the deformed surface after the deformation and the matching connection adjacent surface , and
In the boundary line identification information giving step, the calculation unit further gives boundary line end point identification information to the end points of the boundary line,
In the adjacent surface ridge line matching step, the calculation unit associates the boundary line end point with the intersection line end point based on the boundary line end point identification information, and sets the intersection line end point corresponding to the boundary line end point to the intersection line end point. A design data generation method comprising aligning the adjacent surface ridgeline connected to a boundary line end point . A design data generation method for generating design data of a new shape by performing deformation processing on design data of an article shape,
A design data acquisition step, wherein the design data acquisition unit acquires design data defining the article shape according to an input instruction;
A deformation instruction acquisition unit acquires a deformation surface specification for specifying a deformation surface and a deformation instruction for the deformation surface according to an input as a deformation instruction for the surface constituting the article shape based on the acquired design data. A transformation instruction acquisition step;
A calculation unit, a boundary line identification information giving step for giving boundary line identification information to a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface;
A deformation step in which the arithmetic unit deforms the deformation surface according to the deformation instruction;
A boundary line corresponding ridge line derivation step in which the calculation unit obtains a boundary line corresponding ridge line corresponding to the boundary line on the deformed surface after the deformation based on the boundary line identification information;
The computing unit, the deformed deformed surface and the adjacent surface intersect, the deformed deformed surface includes the deformed surface protruding region including the boundary line corresponding ridge line by the intersection line and its extension line, and When divided into a deformed surface maintaining area not including a boundary line corresponding ridge line, based on the boundary line identification information, a deformed surface protrusion area erasing step for erasing the deformed surface protrusion area;
A deformation surface ridge line alignment step for correcting the ridge line of the deformation surface maintenance region connected to the intersection line and its extension line so that the arithmetic unit is aligned with an end point of the intersection line, and
The calculation unit generates an alignment connection deformation surface generating step defined by the corrected deformation surface ridge line and the intersecting line in the deformation surface maintenance region, and
Including
The calculation unit generates design data of a new shape including the adjacent surface and the matching connection deformation surface , and
In the boundary line identification information giving step, the calculation unit further gives boundary line end point identification information to the end points of the boundary line,
In the deformed surface ridge line matching step, the calculation unit associates the boundary line end point with the intersection line end point based on the boundary line end point identification information, and sets the intersection line end point corresponding to the boundary line end point to the intersection line end point. A design data generation method comprising aligning the deformed surface ridge line connected to a boundary line end point . A design data generation program for causing a computer to generate design data of a new shape by performing deformation processing on design data of an article shape,
Design data acquisition processing for acquiring design data that defines the shape of an article in response to an input instruction;
A deformation instruction acquisition process for acquiring a deformation surface designation for designating a deformation surface and a deformation instruction for the deformation surface according to an input, as a deformation instruction for the surface constituting the article shape based on the acquired design data,
A boundary node providing process for providing boundary nodes at predetermined intervals on a boundary line between the deformed surface and an adjacent surface adjacent to the deformed surface;
A deformation process for deforming the deformation surface according to the deformation instruction;
On the deformation surface after the deformation, a boundary node corresponding point derivation process on the deformation surface for obtaining a boundary node corresponding point on the deformation surface corresponding to the boundary node, and
An intersection line derivation process for obtaining an intersection line between the infinitely extended surface of the adjacent surface and the infinitely extended surface of the deformed surface after the deformation;
A boundary ridge line extending a boundary connection ridge line connected to the boundary line of the adjacent surface to the intersection line, the boundary line, and the intersection line define an adjacent surface extension surface from the infinite extension surface of the adjacent surface An adjacent surface extension surface defining process,
On the intersection line included in the adjacent surface extension surface, on-intersection boundary node corresponding point derivation processing for obtaining each on-intersection boundary node corresponding point corresponding to the boundary node;
A deformation surface connection surface generation process for generating a deformation surface connection surface defined by a series of lines connecting the deformation surface boundary node corresponding points and the intersection line boundary node corresponding points; and
And generating a design data having a new shape including the adjacent surface, the adjacent extended surface, the deformed deformed surface, and the deformed surface connecting surface. Data generation program. A design data generation program for causing a computer to generate design data of a new shape by performing deformation processing on design data of an article shape,
Design data acquisition processing for acquiring design data that defines the shape of an article in response to an input instruction;
A deformation instruction acquisition process for acquiring a deformation surface designation for designating a deformation surface and a deformation instruction for the deformation surface according to an input, as a deformation instruction for the surface constituting the article shape based on the acquired design data,
A boundary node providing process for providing boundary nodes at predetermined intervals on a boundary line between the deformed surface and an adjacent surface adjacent to the deformed surface;
A deformation process for deforming the deformation surface according to the deformation instruction;
On the deformation surface after the deformation, a boundary node corresponding point derivation process on the deformation surface for obtaining a boundary node corresponding point on the deformation surface corresponding to the boundary node, and
An intersection line derivation process for obtaining an intersection line between the infinitely extended surface of the adjacent surface and the infinitely extended surface of the deformed surface after the deformation;
The boundary connecting ridge line connected to the boundary line of the deformed deformed surface extends to the intersecting line, the boundary ridge line extending line, the boundary line, and the intersecting line to extend the deformed surface from the infinitely extended surface of the deformed surface. A deformed surface extension surface defining process for defining a surface;
On the intersection line, on-intersection boundary node corresponding point derivation processing for obtaining an on-intersection boundary node corresponding point corresponding to the boundary node, and
An adjacent surface connection surface generation process for generating an adjacent surface connection surface defined by a series of lines connecting the boundary node and the boundary node corresponding point on the intersection line;
And generating a design data having a new shape including the adjacent surface, the deformed surface after deformation, the deformed surface extension surface, and the adjacent surface connecting surface. Data generation program. A design data generation program for causing a computer to generate design data of a new shape by performing deformation processing on design data of an article shape,
Design data acquisition processing for acquiring design data that defines the shape of an article in response to an input instruction;
A deformation instruction acquisition process for acquiring a deformation surface designation for designating a deformation surface and a deformation instruction for the deformation surface according to an input, as a deformation instruction for the surface constituting the article shape based on the acquired design data,
Boundary line identification information providing process for providing boundary line identification information to a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface;
A deformation process for deforming the deformation surface according to the deformation instruction;
The deformed surface after the deformation intersects the adjacent surface, and the adjacent surface includes an adjacent surface protruding region including the boundary line by the intersection line and an extension line thereof, and an adjacent surface maintaining region not including the boundary line. , The adjacent surface protrusion area erasing process for deleting the adjacent surface protrusion area, based on the boundary line identification information,
Adjacent surface ridge line alignment processing for correcting the ridge line of the adjacent surface maintaining region connected to the intersection line and its extension line so as to be aligned with the end point of the intersection line;
Of the adjacent surface maintaining region, a matching connection adjacent surface generation process for generating a matching connection adjacent surface defined by the corrected adjacent surface ridge line and the intersecting line;
To generate a design data of a new shape including the deformed surface after the deformation and the matching connection adjacent surface ,
In the boundary line identification information providing process, boundary line end point identification information is further added to the end points of the boundary line,
In the adjacent surface ridge line matching processing, the boundary line end point is associated with the intersection line end point based on the boundary line end point identification information, and the boundary line end point corresponding to the boundary line end point is connected to the boundary line end point. A design data generation program characterized by aligning the adjacent surface ridge lines . A design data generation program for causing a computer to generate design data of a new shape by performing deformation processing on design data of an article shape,
Design data acquisition processing for acquiring design data that defines the shape of an article in response to an input instruction;
A deformation instruction acquisition process for acquiring a deformation surface designation for designating a deformation surface and a deformation instruction for the deformation surface according to an input, as a deformation instruction for the surface constituting the article shape based on the acquired design data,
Boundary line identification information providing process for providing boundary line identification information to a boundary line between the deformation surface and an adjacent surface adjacent to the deformation surface;
A deformation process for deforming the deformation surface according to the deformation instruction;
A boundary line corresponding ridge line derivation process for obtaining a boundary line corresponding ridge line corresponding to the boundary line on the deformed surface after the deformation based on the boundary line identification information;
The deformed deformed surface and the adjacent surface intersect, and the deformed deformed surface includes a deformed surface protruding region including the boundary line corresponding ridge line by the intersection line and an extension line thereof, and the boundary line corresponding ridge line. When it is divided into a deformed surface maintenance area not included, based on the boundary line identification information, a deformed surface protrusion area erasing process for erasing the deformed surface protrusion area,
Deformation surface ridge line alignment processing for correcting the ridge line of the deformation surface maintenance region connected to the intersection line and its extension line so as to be aligned with the end point of the intersection line;
An alignment connection deformation surface generation process for generating an alignment connection deformation surface defined by the corrected deformation surface ridge line and the intersecting line in the deformation surface maintenance region,
To generate a design data of a new shape including the adjacent surface and the matching connection deformation surface ,
In the boundary line identification information providing process, boundary line end point identification information is further added to the end points of the boundary line,
In the deformed surface ridge line matching process, the boundary line end point is associated with the intersection line end point based on the boundary line end point identification information, and the boundary line end point corresponding to the boundary line end point is connected to the boundary line end point A design data generation program characterized by aligning the deformed surface ridge line .

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