JP6014483B2 - Sheet metal processing system and method, and correction system - Google Patents

Description

  The present invention relates to a sheet metal processing system, a method thereof, and a correction system. More specifically, even if variations in sheet thickness occur, a work process and a composite process (blank process, bending process, etc.) from a blank process to an actual material are performed. Sheet metal processing that avoids rework up to CAD design and realizes high-quality composite processing from the blanking process to the bending process in accordance with the actual material (actual sheet thickness, etc.). The present invention relates to a system, a method thereof and a correction system.

  The prior art will be described with reference to the drawings. Refer to FIG. In step SF01, 2D / 3D-CAD design is performed. In step SF02, a 2D development view (DXF file) is read.

  In step SF03, sheet metal development data is created. In step SF04, a sheet metal solid model creation process is performed. In step SF05, a blank (laser) machining program creation process is executed.

  In step SF06, a bending processing program creation process is performed. In step SF07, blank actual machining is performed. In step SF08, actual bending is performed.

  This will be described in more detail with reference to FIGS. Refer to FIG. In step SG01, the 2D / 3D-CAD design system operates. A 2D development view (DXF data) and parts (3D CAD data) are stored in the storage unit.

  In step SG02, 2D / 3D-CAD input processing is performed.

  In step SG03, processing for creating sheet metal development data is performed. At this time, the new bending elongation value master, processing attribute reference data, and material data are referred to. On the other hand, sheet metal development data is created and stored in the storage unit.

  In step SG04, a sheet metal solid model (data) is created. At this time, the sheet metal development data is referred to. On the other hand, the solid model with sheet metal properties (data) is stored in the storage unit.

  Refer to FIG. Subsequently, in step SG05, the production management system performs processing. The production arrangement is stored in the storage unit. In step SG06, production arrangement input processing is performed.

  In step SG07, blank (laser) nesting processing is performed. Sheet metal development data and material inventory information are referenced. Then, planing information is created and stored in the storage unit. In step SG08, processing programming creation processing is performed. At this time, the planing information is referred to. Then, the machining program is stored in the storage unit.

  In step SG09, a schedule creation process is executed. Then, the schedule is stored in the storage unit.

  Refer to FIG. In step SG10, the production management system performs a predetermined process. Then, the production arrangement is stored in the storage unit. In step SG11, the production arrangement is referred to, and the production arrangement input process is performed.

  In step SG12, a bending programming creation process is performed. At this time, sheet metal solid data, material data, and a new bending elongation value master are referred to. Then, a machining program is created and stored in the storage unit. In step SG13, a schedule creation process is performed. Then, the schedule is stored in the storage unit.

  Refer to FIG. In step SG14, materials are arranged. In step SG15, material delivery, storage stock yards, and storage are performed. Generally, when purchasing thick plate materials, variations in plate thickness occur for each supplier and arrangement lot.

  In step SG16, material preparation for use in the blank process is performed. Then, the material inventory information is stored in the storage unit. In step SG17, laser cutting is performed in the blank process. At this time, the processing program, schedule, and material inventory information are referred to. In step SG18, the parts are sorted and conveyed after laser cutting.

  In step SG19, bending is performed in the bending process. Machining programs and schedules are referenced.

  In step SG20, it is determined whether or not a defect has occurred in the composite accuracy in the blank / bending process. If it is determined that a problem has occurred, the process returns to step SG01. If it is determined that no defect has occurred, the process proceeds to step SG21. In step SG21, the next process and the welding / assembly process are performed.

  See also Patent Document 1.

JP 2000-331188 A

  In these conventional system operations, in the CAD process and CAM process, a development view with sheet metal processing attributes created beforehand based on design material values (material, sheet thickness, XY dimensions, etc.) at the time of sheet metal CAD / CAM design. A processing program for each processing machine is created from the data and the sheet metal solid model (data).

  When actual manufacturing arrangements are made, it frequently occurs in plate materials (especially thick plate materials) that the thickness of actual materials used in the field differs greatly from the design.

  In that case, when bending parts after blank processing based on design development data and sheet metal solid model (data), due to differences in actual sheet thickness, combined processing (combination of blank processing, bending processing, etc.) Because of this difference in dimensional accuracy, composite processing itself cannot be performed. For example, when a sheet metal solid model is divided and developed view data is created, the size of the developed shape differs depending on the difference in sheet thickness.

  For this reason, rework up to the first CAD design occurs for all the target parts, resulting in a huge loss of time, man-hours, and material costs.

  The invention of the present application avoids the work process of bending from the blank with the actual material and the combined machining accuracy failure even if the thickness of the plate material (thick plate material etc.) occurs, and the process until CAD design is achieved. The purpose is to realize high-quality combined processing of the bending process from the blank that matches the actual material (sheet thickness) without the return work. Of course, the same quality improvement to the next process (welding / assembly) can be achieved.

The present invention is for solving the above-mentioned problems, and a feature of the present invention is a sheet metal processing system according to a sheet metal three-dimensional model.
A means of obtaining actual material information;
Means for correcting the sheet thickness of the sheet metal solid model according to the actual material information and generating a temporary sheet metal solid model;
Means for generating development view data from the temporary sheet metal solid model ,
A sheet metal solid model with sheet metal processing attributes and process information is created by referring to the actual material information at each production instruction point, automatically generating a temporary sheet metal solid model and development data, and using the development data. The actual machining is performed by a blank machining program and a bending program.

Another feature of the present invention is a sheet metal processing method according to a sheet metal three-dimensional model,
A step of acquiring actual material information, a step of correcting a sheet thickness of the sheet metal solid model in accordance with the actual material information to generate a temporary sheet metal solid model, and development data from the temporary sheet metal solid model And a step of generating
A sheet metal solid model with sheet metal processing attributes and process information is created by referring to the actual material information at each production instruction point, automatically generating a temporary sheet metal solid model and development data, and using the development data. The actual machining is performed by a blank machining program and a bending program .

  For example, the following effects are achieved.

  (1) The CAD / CAM automation process from blanking to bending corresponding to the variation in the actual thickness of the purchased material (especially thick plate) is realized. Since it becomes possible to solve the problem of combined machining accuracy from actual blanking to bending, it is possible to eliminate reworked work up to 2D / 3D-CAD design.

  (2) This operation can achieve the same effect for precision machining of thin sheet materials.

  (3) In this operation, the quality of the welding / assembly process after the bending process is improved by making the attribute of the welding / assembly process after the bending correspond to the master of the sheet metal solid model with the sheet metal processing attribute / process information. An effect is obtained.

It is explanatory drawing explaining a sheet metal solid model creation apparatus and the automatic programming apparatus for blanks. It is explanatory drawing explaining a bending automatic programming apparatus. It is explanatory drawing explaining a blank processing machine control apparatus. It is explanatory drawing explaining a bending machine control apparatus. It is explanatory drawing explaining the correlation between each apparatus. It is a flowchart explaining the process of a blank process and a bending process from CAD design. It is explanatory drawing explaining the relationship of each information. It is explanatory drawing explaining the relationship of each information. It is explanatory drawing explaining the relationship of each information. (A), (b), (c), (d), (e) is explanatory drawing explaining the influence in the actual process by the variation in material board thickness. (A), (b), (c) is explanatory drawing explaining the influence in the actual process by the variation in material board thickness. (A), (b), (c), (d) is explanatory drawing explaining the influence in the actual process by the variation in material plate | board thickness. It is a flowchart which shows operation | movement of a sheet metal processing system. It is a flowchart which shows operation | movement of a sheet metal processing system. It is a flowchart which shows operation | movement of a sheet metal processing system. It is a flowchart which shows operation | movement of a sheet metal processing system. It is a flowchart which shows operation | movement of a sheet metal processing system. It is explanatory drawing explaining correction | amendment of plate | board thickness. (A), (b), (c), (d) is explanatory drawing explaining correction | amendment of plate | board thickness. (A), (b), (c), (d) is explanatory drawing explaining correction | amendment of plate | board thickness. It is a flowchart explaining correction | amendment of plate | board thickness. It is a flowchart explaining correction | amendment of plate | board thickness. It is explanatory drawing explaining correction | amendment of plate | board thickness. (A), (b), (c) is explanatory drawing explaining correction | amendment of plate | board thickness. It is a flowchart explaining correction | amendment of plate | board thickness. It is a prior art explaining a prior art. It is a prior art explaining a prior art. It is a prior art explaining a prior art. It is a prior art explaining a prior art. It is a prior art explaining a prior art.

  Embodiments of the present invention will be described below with reference to the drawings.

  Please refer to FIG. 1 shows a sheet metal three-dimensional model creation device 1.

  The sheet metal three-dimensional model creation apparatus 1 includes a 2D (two-dimensional) / 3D (three-dimensional) -CAD input processing unit 1A, a sheet metal processing attribute conversion unit 1B, a master sheet metal model creation processing unit 1C, and a master sheet metal three-dimensional model development. A figure data creation processing unit 1D, a sheet metal processing attribute editing processing unit 1E, and an actual material information (inventory information) automatic correction processing unit 1F are provided.

  The 2D (2D) / 3D (3D) -CAD input processing unit 1A performs 2D (2D) / 3D (3D) -CAD input processing. The sheet metal processing attribute conversion unit 1B refers to the processing attribute reference data 1G and the material data 1H and converts the processing attributes of the sheet metal.

  The master sheet metal three-dimensional model creation processing unit 1C refers to the material data 1H and performs the process of creating the master sheet metal three-dimensional model 1J. The master sheet metal three-dimensional model development view data creation processing unit 1D creates the development data 1L of the master sheet metal three-dimensional model with reference to the new bending elongation value master 1I. The sheet metal working attribute editing processing unit 1E edits the sheet metal working attribute with reference to the master sheet metal solid model 1J.

  The actual material information (inventory information) automatic correction processing section 1F refers to the new bending elongation value master 1M, the material inventory information 1N, the master sheet metal solid model 1J, the material data 1K, and the master sheet metal development drawing data 1L. Inventory information) is automatically corrected. Then, the temporary sheet metal solid model 10 and the temporary sheet metal solid model development view data 1P are stored in the storage unit.

  The 2D / 3D-CAD system 2 stores a 2D development diagram 3 (DXF data or the like) and a part (3D-CAD data) 4.

  The “sheet metal working attribute” includes information that must be taken into consideration in other processes, such as a bending mold and an abutting position, determined in the process design, for example. Also, information in the sheet metal solid model added to the sheet metal solid model and the shape feature is included.

  The new bending elongation master 1I stores the value of elongation by bending. The temporary sheet metal three-dimensional model 1O temporarily stores the sheet metal three-dimensional model on which the sheet thickness is corrected. The temporary sheet metal solid model development view data 1P is development view data obtained by developing the temporary sheet metal solid model 1P.

  The blank automatic programming device 5 includes a production arrangement input processing unit 5A, an actual material inventory allocation processing unit 5B for the relevant part, an actual material information (inventory information) automatic correction processing unit 5C, and temporary development data for the relevant part. A reference processing unit 5D, a nesting processing unit 5E, a machining programming creation processing unit 5F, and a schedule creation processing unit 5G are provided.

  The production arrangement input processing unit 5A inputs production arrangement. Then, the production arrangement 5H is stored in the storage unit. The actual material inventory allocation processing unit 5B for the relevant part refers to the production arrangement 5H and the material inventory information 5I, and allocates the actual material inventory for the relevant part. The actual material information (stock information) automatic correction processing unit 5C automatically corrects the actual material information (stock information). At this time, processing is executed in response to the call of the actual material information (stock information) automatic correction processing unit 1F.

  The temporary development view data reference processing unit 5D for the relevant part performs processing by referring to the temporary development view data 1P for the relevant part. The nesting processing unit 5E performs nesting processing with reference to the temporary sheet metal solid model development view data 1P. Then, the planing information 5J is stored in the storage unit. The machining programming creation processing unit 5F creates machining programming 5K with reference to the temporary sheet metal three-dimensional model development view data 1P and the board cutting information 5J. The schedule creation processing unit 5G creates the schedule 5L and stores it in the storage unit.

  The production arrangement input processing unit 5A refers to the production arrangement 7 output from the production management system 6.

  Please refer to FIG. The automatic programming device 8 for bending includes a production arrangement input processing unit 8A, an actual material information allocation processing unit 8B for provisioning blank processing, a temporary sheet metal solid model 8C for the relevant part, a bending programming creation processing unit 8D, And a schedule creation processing unit 8E.

  The production arrangement input processing unit 8A performs production arrangement input processing. The blank material allocation actual material information allocation processing unit 8B refers to the production arrangement 8F and the material inventory information 8G, and allocates actual material information in blank processing.

  The temporary sheet metal solid model 8C for the relevant part creates a part with reference to the temporary sheet metal solid model 10 and the material inventory information 8G.

  The bending programming creation processing unit 8D creates bending programming by referring to the part, the temporary sheet metal solid model 10 and the new bending value master 8H. The schedule creation processing unit 8E creates the schedule 8K with reference to the production arrangement 8I and the bending program 8J.

  The production arrangement input processing unit 8A refers to the production arrangement 7 output from the production management system 6.

  Please refer to FIG. The blank processing machine control device 9 includes a schedule input processing unit 9A, a schedule editing processing unit 9B, a processing program drawing processing unit 9C, a material inventory management unit 9D, a material warehousing actual material thickness measurement processing unit 9E, A schedule operation processing unit 9F, an NC interface 9G, and an automatic control interface 9H are provided.

  The schedule input processing unit 9A refers to the schedule 9I and the machining program 9J and performs schedule input processing. Then, the machining program 9K and the machining schedule 9L are stored in the storage unit. The schedule edit processing unit 9B performs an edit process for the processing schedule 9L.

  The machining program drawing processor 9C performs drawing processing based on the machining program 9K. The material inventory management unit 9D refers to the material data 9M and manages the material inventory information 9N.

  The actual material plate thickness measurement processing unit 9E at the time of material entry performs a measurement process of the actual material plate thickness at the time of material entry with reference to the material data 9M. And material manufacture ID number 90 is memorize | stored in a memory | storage part. The schedule operation processing unit 9F refers to the machining program 9K, the machining schedule 9L, and the material inventory information 9H, and operates the schedule.

  The NC interface 9G is an interface with the NC apparatus 10. The automatic control interface 9H is an interface with the automatic control device 12.

  The blank processing machine control device 9 executes control in cooperation with the NC device 10, the laser processing machine 11, and the automatic control device 12.

  When the material is received, the thickness of the actual material is measured and notified by using a digital caliper.

  Please refer to FIG. The bending machine control device 13 includes a schedule input processing unit 13A, a schedule editing processing unit 13B, a machining program drawing processing unit 13C, a schedule operation processing unit 13D, and an NC interface 13E.

  The schedule input processing unit 13A performs schedule input processing with reference to the schedule 13F and the machining program 13G. Then, the machining program 13H and the machining schedule 13I are stored in the storage unit. The schedule edit processing unit 13B performs an edit process for the processing schedule 13I.

  The machining program drawing processor 13C performs drawing processing based on the machining program 13H. The schedule operation processing unit 13D refers to the machining program 13H and the machining schedule 13I and operates the schedule. The NC interface 13E is an interface with the NC device 14.

  The bending control device 13 executes control in cooperation with the NC device 14 and the bending machine 15.

  Please refer to FIG. The correlation of the structure of the sheet metal processing system S is shown. A sheet metal three-dimensional model creation device 1, a blank automatic programming device 5, a bending automatic programming device 8, a blank processing machine control device 9, a bending machine control device 13, and a material information server 16 are provided. Further, a laser processing machine 11 and a bending machine 15 are provided. Each of these devices works as a sheet metal processing system S in cooperation.

  With the cooperation of each device, the sheet metal processing system S (particularly the sheet metal three-dimensional model creation device 1) temporarily corrects the sheet thickness of the sheet metal three-dimensional model according to the means for acquiring the actual material information and the actual material information. It functions as a means for generating a typical sheet metal solid model and a means for generating development view data from the temporary sheet metal solid model.

  In addition, the sheet metal processing system S (particularly the sheet metal three-dimensional model creation device 1) refers to the actual material information at each production instruction point from the sheet metal three-dimensional model with sheet metal processing attributes and process information, a temporary sheet metal three-dimensional model, and a development view. Data is automatically generated, and the blank processing machine control device 9 performs actual processing by a blank processing program and a bending processing program created using the developed drawing data.

  Furthermore, the sheet metal processing system S performs unique management based on the material manufacturing ID number for each actual material information for the material inventory information, and is used in each part and product between the blank process, the bending process, and the next process. Track actual materials and quality.

  Note that a temporary sheet metal solid model reflecting the actual sheet thickness and development data are automatically generated from the master sheet metal solid model. Reference is made to the new bending elongation value master.

  A blank machining program and schedule generation (nesting processing) are performed. Also, a bending processing program and a schedule are generated.

  Each of these devices is configured by a computer, and the computer main body includes a CPU (Central Processing Unit), a storage unit, a RAM, a ROM, and the like. Then, the display device 3, the keyboard 4, and the mouse 5 are connected to the computer main body.

  Please refer to FIG. Operation | movement of the sheet metal processing system S comprised as mentioned above is shown. In step SA01, 2D (2D) / 3D (3D) -CAD design is performed. In step SA02, a 2D development view DXF file is read.

  In step SA03, a master sheet metal solid model creation process is performed. In step SA04, a bending processing program creation process is performed. In step SA05, development data is created. In step SA06, a blank (laser) machining program creation process is performed.

  In step SA07, blank actual machining is performed. In step SA08, actual bending is performed.

  The material inventory information is uniquely managed by the material manufacturing ID number for each actual material information. Then, the blank material, the bending process, each part between the next processes, the actual material used in the product, and the manufacturing quality related to the design are tracked. Since each data is associated as shown below, tracking is possible.

  FIG. 7 shows CAD system information. Please refer to FIG. In the master, the data name DM is the part number BB. In the temporary sheet metal solid model, the data name DM includes a part number BB and a material manufacturing ID number ZID.

  The material data includes a material code name ZCM, a material name ZM, a material ZA, a plate thickness IT, an X dimension XS, and a Y dimension YS.

  The material inventory information includes a storage address HA, a material code name ZC, a material manufacturing ID number ZID, a plate thickness IT, an X dimension XS, a Y dimension YS, and an inventory number ZS.

  The material manufacturing ID number is associated with the material code name ZC, the plate thickness IT, the X dimension XS, the Y dimension YS, the supplier NG, and the receipt date NY.

  FIG. 8 shows production order system information. In the temporary sheet metal solid model, the data name DM of the production order number SOB includes a part number BB and a material production ZID number.

  The production arrangement includes a production order number SOB, a part number BB, a production number SS, a production delivery date SN, a material code name ZCM, a material production ID number ZID, and a processing machine KK.

  FIG. 9 shows manufacturing CAM system information. In the machining program number PB, the data name DM includes a manufacturing order number SOB, a part number BB, and a material manufacturing ID number ZID.

  The production arrangement includes a production order number SOB, a part number BB, a production number SS, a production delivery date SN, a material code name ZCN, a material production ID number ZID, and a processing machine KK.

  Reference is made to FIG. 10A to FIG. The effects in actual machining due to variations in plate thickness and solutions are shown.

As shown in FIG. 10A, a design with a plate thickness of 6 mm is assumed. As shown in FIG. 10 (b), the influence due to variations in the JitsuitaAtsu, gap deviation occurs when the solid material thickness 5.5 mm (see area EA _1). Reference is made to FIG. As a solution, re-solidification and expansion processing is performed with the actual plate thickness. When the actual material plate thickness is 5.5 mm, the unfolded length is an extension (extends in the arrow AR1 method). This is a corner shape change. Moreover, it is a bending position change.

Reference is made to FIG. Solid material thickness is, in the case of 6.5 mm, are interference overlap occurs (see area EA _2). Reference is made to FIG. As a solution, the development length is shortened (shrink in the direction of arrow AR2). Change the corner shape and bending position.

  This will be further described with reference to FIGS. 11 (a) to 11 (c) and FIGS. 12 (a) to 12 (d).

  Reference is made to FIG. Plate thickness: 6 mm design. The line indicated by L1 is a line indicating a plate thickness of 6 mm. Reference is made to FIG. It is a master sheet metal solid model. Reference is made to FIG. It is master sheet metal solid model development drawing data.

  Reference is made to FIG. Actual material plate thickness: 5.5 mm (development length: extension, notch, flange extension). The line indicated by L1 indicates a plate thickness of 6.0 mm. The line indicated by L2 is a line indicating an actual plate thickness of 5.5 mm.

  Reference is made to FIG. Actual material plate thickness: 6.5 mm (deployment length: shortened, notched, flange shortened). The line indicated by L1 is a line having a plate thickness of 6 mm. A line indicated by L3 is a line indicating an actual plate thickness of 6.5 mm.

  Reference is made to FIG. It is a temporary sheet metal solid model from time to time. Reference is made to FIG. At any time, it is a temporary sheet metal solid model development drawing data generation.

  13 to 17 show the operation of correcting the plate thickness in the sheet metal processing system S.

  Please refer to FIG. In step SB01, the 2D / 3D-CAD design system is executed. A 2D development view (DXF data) 3 and parts (3D CAD data) 4 are stored in the storage unit. In step SB02, 2D / 3D-CAD data input processing is performed.

  In step SB03, sheet metal processing attributes are converted. In this conversion, the processing attribute reference data 1G and the material data 1H are referred to.

  In step SB04, a master sheet metal solid model and development data are created. In this process, the new bending elongation value master 1I, the processing attribute reference data 1G, and the material data 1H are referred to.

  On the other hand, master sheet metal solid model 1J and master sheet metal solid model development view data 1L are stored in the storage unit.

  Refer to FIG. In step SB05, processing of the production management system is performed. Then, the production arrangement 7 is stored in the storage unit. In step SB06, a production arrangement input process is performed.

  In step SB07, material arrangement is performed. Subsequently, in step SB08, a material delivery process is performed. In step SB09, a process for measuring the actual plate thickness of the delivered material is performed. As a result, information on the material manufacturing ID number and the actual plate thickness is registered in the storage unit.

  In step SB10, the material is stocked on a stock storage yard or shelf. Correspondingly, the material inventory information 5I is stored in the storage unit.

  In step SB11, the inventory information of the actual material is referred. At this time, the material inventory information 5I is referred to.

  In step SB12, the influence degree of the variation in the actual plate thickness is determined. In step SB13, it is determined whether there is an influence. If it is determined that there is an influence, the process proceeds to step SB14. If it is determined that there is no influence, the process proceeds to step SB15.

  In step SB14, the automatic correction processing unit for actual material information (inventory information) generates a temporary sheet metal solid model corresponding to the actual material and development data.

  At this time, the material manufacturing ID number, the new bending elongation value master 1M, the material inventory information 1N, the master sheet metal solid model 1J, and the master sheet metal solid model development view data 1L are referred to. Then, the temporary sheet metal solid model 10 is stored in the storage unit. Temporary sheet metal development data 1P is stored in the storage unit.

  In step SB15, the master sheet metal solid model is copied to the temporary solid model and the development data. At this time, the master sheet metal model development view data 1L is referred to.

  Refer to FIG. In step SB16, the production management system performs processing. Then, the production arrangement 7 is stored in the storage unit. In step SB17, input of production arrangement 7 is performed.

  In step SB18, a bending programming creation process is performed. At this time, the temporary sheet metal solid model 1O, the material data 1K, and the new bending elongation value master 8H are referred to. Then, the machining program 8J is stored in the storage unit. In step SB19, a schedule 8K creation process is performed. Then, the schedule 8K is stored in the storage unit.

  Refer to FIG. In step SB20, the production management system performs processing. Then, the production arrangement 7 is stored in the storage unit. In step SB21, input of production arrangement 7 is performed.

  In Step SB22, the nesting process for blank (for laser processing) is performed with reference to the temporary development map data 1P and the material inventory information 5I. Then, the planing information 5I is stored in the storage unit. In step SB23, the machining programming 5K is created. Then, the machining programming 5K is stored in the storage unit. In step SB24, the schedule 5L is created. Then, the schedule 5L is stored in the storage unit.

  Refer to FIG. In step SB25, materials are arranged. In step SB26, the material is delivered and stored in a storage stockyard or shelf. In addition, material preparation is performed. In step SB27, material preparation for use in the blank process is performed. Then, the material inventory information 5I is stored in the storage unit.

  In step SB28, laser cutting is performed in a blank process. At this time, the machining program 9K, the schedule 9L, and the material inventory information 5I are referred to. In step SB29, parts are sorted and transported after laser cutting.

  In step SB30, a bending process is performed in the bending process. Refer to the machining program 13H and the schedule 13I. At this time, the composite accuracy defect does not occur.

  In step SB31, the process proceeds to the next process, the welding / assembly process.

  Reference is made to FIGS. A method for constructing a master sheet metal solid model and creating a temporary sheet metal solid model in consideration of actual material information and design intention will be described.

  Please refer to FIG. Each surface of the sheet metal solid model is arranged in a three-dimensional space. Each plane has a local coordinate system.

For example, the local coordinate system Dim includes: [1] X, Y and Z coordinates on a three-dimensional space where the plane KM ₂ exists, [2] X-axis direction vector, [3] Y-axis direction vector, [4] Z-axis Consists of direction vectors.

Defined outline graphic element of the local coordinate system Dim XY plane to the plane KM ₂ of, by having the thickness in the Z-axis direction, creating a state of solid.

When the planes are connected by bending, it has bending information. The bending information includes [1] a surface to be connected by bending and its connecting ridge line, [2] bending elongation value, [3] butt pattern, and [4] bending R. The details for the areas EB ₁ , EB ₂ and EB ₃ are shown in the figure.

  Reference is made to FIGS. The matching pattern includes the following types. FIG. 19A shows an “outer-inner” bending butt pattern. FIG. 19B shows an “inner-outer” bending butt pattern. FIG. 19C shows an “inner-inner” bending butt pattern. FIG. 19D shows an “outside-outside” bending butt pattern. The bending butt pattern has a merge point defined for each pattern (shown by a black circle in the figure). The above shows the internal data structure of the bend. When the bend shape is displayed, the outer shape of the R shape is displayed.

  In a sheet metal part in which a plurality of surfaces are connected by bending, there is one reference surface. Then, a development view is created by laying out each surface on a two-dimensional plane in consideration of the bending elongation value.

  Reference is made to FIGS. As shown in FIG. 20A, in the three-plane view of the normal sheet metal solid model, the design intent is expressed by the dimension line, which is an important dimension of the outer or inner dimension of the sheet thickness.

  When creating a master sheet metal three-dimensional model, it is possible to create a master sheet metal three-dimensional model including the design intent by creating surfaces according to the design intention.

  For example, a surface with a width of 40 is created as shown in FIG. 20B, and a surface with a width of 30 is drawn “inside-outside” as shown in FIG. Then, as shown in FIG. 20D, the surface of the width 20 is drawn “outside-outside”.

  Refer to FIG. The operation | movement which correct | amends the plate | board thickness of a master sheet metal solid model is shown. This is a process mainly performed by the actual material information (stock information) automatic correction processing unit 1F of the sheet metal solid model.

In step SC01, actual material information is given to the generated master sheet metal solid model. In step SC02, the local coordinate system of the surface KM ₁ as a reference fixed to modify the thickness of the model to the actual thickness value. By moving the surface in the arrow AR1, modifying the thickness T to a thickness T _1.

In step SC03, if the merge point MP ₁ defined by the butting pattern surface KM ₂ connected by bending the plane KM ₁ is moved to move the local coordinates of the plane KM _2. At this time, the local coordinate system is moved to the merge point defined by the matching pattern in the order of a surface (dependent surface) connected by bending from the surface and a dependent surface connected by bending from the dependent surface.

In Step SC04, the surface KM ₂ connected by bending from the reference surface KM ₁ is set as the next reference surface.

In step SC05, the surface to be connected by bending from a reference plane, modify repeats steps SC02~ step SC04 in the order of terms connected by addition bend from the surface (thickness of the surface KM ₂ in the arrow AR2 direction After updating the merge point, the thickness of the surface KM ₃ is further corrected in the direction of the arrow AR3.) By this, the master sheet metal solid model takes into consideration the actual material information and the important dimensions intended by the designer are preserved. By creating a temporary three-dimensional model and developing it with an appropriate bending elongation value of actual material information, it becomes possible to create a development view of a temporary sheet metal three-dimensional model different from the master sheet metal three-dimensional model.

  In step SC06, a difference occurs in the developed view. That is, a difference occurs between the development view of the master sheet metal solid model and the development view of the temporary sheet metal solid model.

  Refer to FIG. The above process is shown in a flowchart. This is a process mainly performed by the actual material information (stock information) automatic correction processing unit 1F of the sheet metal solid model.

  In step SD01, the thickness of the reference surface is changed. In step SD02, the local coordinate system of all the dependent surfaces of the reference surface is moved to the merge point defined by the matching pattern.

  In step SD03, it is determined whether there is a dependent surface that has not yet been changed to the actual plate thickness. If it is determined that it exists, the dependent plane is set as a reference plane, and the process proceeds to step SD01. If it is determined that the file does not exist, the process ends.

  Refer to FIG. When a master sheet metal solid model is constructed and a temporary sheet metal solid model is created from the actual material information and design intent, the matching shape is further adjusted. The mechanism described above is also applied to matching. Matching information is provided for portions that require matching processing between the surfaces of the sheet metal model placed in the three-dimensional space.

In the drawing, details of the matching pattern of the areas EC ₁ and EC ₂ are shown.

  The matching information includes [1] a surface to be connected by bending and its connecting ridge line, [2] a matching pattern, and [3] an appropriate gap amount.

  Reference is made to FIGS. The matching pattern includes an “outside-inside” pattern shown in FIG. 24A, an “inside-outside” pattern shown in FIG. 24B, and an “inside-inside” shown in FIG. , Any of the “outside-outside” patterns shown in FIG. 24D, and a merge point (a point indicated by a black circle in the drawing) is defined in each pattern. The matching information can be set even if the surfaces do not actually interfere with each other.

  Refer to FIG. After the actual material information is given to the master sheet metal solid model described above and a temporary sheet metal solid model is created using the bending information, the butt shape is adjusted using the butt information.

  The surface contour defined on the local coordinate system of each surface is deformed so as to pass through a point that considers an appropriate gap amount at the merge point defined by the matching pattern of the matching information. A development view of the temporary sheet metal solid model is created from the temporary sheet metal solid model.

  This processing is mainly performed by the actual material information (stock information) automatic correction processing unit 1F of the sheet metal solid model 1.

In step SE01, a sheet metal solid model is generated. In this example, a sheet metal solid model having a sheet thickness T is generated. In step SE02, a temporary sheet metal solid model is generated using bending information. Temporary sheet metal solid model of thickness T ₁ is generated.

  In step SE03, the matching shape is adjusted by deforming the contour of the surface MN using the matching information. Specifically, the surface MN is moved in the directions of arrows AR2 and AR3. In step SE04, expansion processing is performed. Thereby, a development view of the temporary sheet metal solid model is created (different from the development view of the master sheet metal solid model).

  As described above, in the present invention, the sheet metal processing attribute and the three-dimensional model data with process information are master-operated to change the sheet metal processing information (addition of new processing method and sheet metal property, sheet thickness of actual material information, reflection of XY dimensions, etc.) ), Dynamic data reflection can be performed in response to a change in process information (addition or change of a new process). At the same time, 3D data with temporary sheet metal working attributes and process information and development data are automatically generated and file server registration can be performed. In addition, since the processing program generation processing by automatic batch processing by the automatic programming device for bending and the automatic programming device for blank (eg laser) is realized, the variation in the thickness of the thick plate material in the actual material information of the purchased material is considered. By using a 3D model master with dynamic sheet metal working attributes and process information, the combined machining accuracy by blanking (eg, laser) and bending is accurate.

The present invention is not limited to the embodiments of the invention described above, and can be implemented in other modes by making appropriate modifications.

S Sheet metal processing system 1 Sheet metal solid model creation device 2 2D / 3D-CAD system 3 2D development view DXF data memory 4 3D-CAD data memory 5 Blank automatic programming device 6 Production management system 7 Production arrangement memory 8 Bending automatic programming device 9 Blank processing machine control device 10 NC device 11 Laser processing machine 12 Automatic control device 13 Bending machine control device 14 NC device 15 Bending machine 16 Material information server

Claims (2)

In the sheet metal processing system related to the sheet metal solid model,
A means of obtaining actual material information;
Means for correcting the sheet thickness of the sheet metal solid model according to the actual material information and generating a temporary sheet metal solid model;
Means for generating development view data from the temporary sheet metal solid model ,
A sheet metal solid model with sheet metal processing attributes and process information is created by referring to the actual material information at each production instruction point, automatically generating a temporary sheet metal solid model and development data, and using the development data. A sheet metal processing system that performs actual processing by a blanking program and a bending program . In the sheet metal processing method according to the sheet metal solid model,
A step of acquiring actual material information, a step of correcting a sheet thickness of the sheet metal solid model in accordance with the actual material information to generate a temporary sheet metal solid model, and development data from the temporary sheet metal solid model And a step of generating
A sheet metal solid model with sheet metal processing attributes and process information is created by referring to the actual material information at each production instruction point, automatically generating a temporary sheet metal solid model and development data, and using the development data. A sheet metal processing method characterized by performing actual processing by a blank processing program and a bending processing program .

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