JP6749564B2 - Processing evaluation apparatus, processing evaluation method, program for functioning as processing evaluation apparatus, and recording medium recording the program - Google Patents

Description

The present invention relates to a processing evaluation device, a processing evaluation method, a program for functioning as a processing evaluation device, and a recording medium recording the program. More specifically, a machining definition storage unit that stores a machining definition that predefines one or more machining from a predetermined work shape to a final shape of a product, and a post-machining shape after the machining based on the machining. A machining evaluation device having a generated post-machining shape generation unit and a shape output display unit for outputting and displaying the generated post-machining shape on a monitor, a machining evaluation method, and a program for functioning as the machining evaluation device, and the program thereof. Recording medium.

Conventionally, as a processing evaluation method as described above, for example, a method described in Patent Document 1 is known. In this method, the cutting shape data obtained from the tool type data included in the movement command is calculated and derived so as to represent it with a halftone dot, and the surface shape is subtracted from the raw material shape data generated with the halftone dot to create a new halftone dot image. This is used as data, and this is performed for all movement commands to generate processed image data. Then, the processed image data is subtracted from the model image data to obtain the difference, and the cut portion and the uncut portion are evaluated.

Here, the image data is displayed as halftone dots, but if, for example, the tool used for finishing and its area (region) are smaller than the interval between the halftone dots, the finishing cannot be displayed correctly and the accuracy of evaluation is descend. Also, in the shape output display, fine irregularities are not expressed. On the other hand, if the interval of halftone dots is made fine, the accuracy of shape evaluation can be secured, but if the interval is halved (the accuracy is doubled), the amount of image data and the data of the surface shape in the shape output display will be four times larger. The amount and processing time increase dramatically, resulting in a significant decrease in efficiency.

JP-A-7-64616

In view of such a conventional situation, the present invention is capable of accurately and quickly generating and displaying a post-machining shape, and a machining evaluation device that facilitates machining evaluation, a machining evaluation method, and a program for causing the machining evaluation device to function. The object is to provide a recording medium recording the program.

In order to achieve the above object, a feature of the machining evaluation apparatus according to the present invention is that a machining definition storage unit stores a machining definition that predefines one or more machining from a predetermined work shape to a final shape of a product. In the configuration including a post-machining shape generation unit that generates a post-machining shape after the machining based on the machining, and a shape output display unit that outputs and displays the generated post-machining shape on a monitor, the machining definition is The processing order includes one or more processing orders and processing information including at least information on a tool to be used and information on a tool path for each processing, and the post-machining shape generation unit sets the post-processing shape at predetermined intervals. The sweep shape formed by moving the used tool along the tool path based on the processing information is sequentially subtracted from the initial processed shape in accordance with the processing order. And a partial shape specifying unit that specifies the shape of a portion to be processed by at least one of the one or more processings or a predetermined portion of the final shape, and the specified partial shape. Further comprising a detailed shape generation unit for defining as a detailed shape by a detailed definition unit arranged at an interval narrower than the interval, the partial shape specifying unit, in the tool path of the tool in the machining related to the specified partial shape The specified partial shape is defined by giving a width corresponding to the tool diameter of the tool, and the detailed shape generation unit defines an initial detailed shape based on the defined specified partial shape and Of the above processing, the sweep shape based on the processing information of all the processing until the processing relating to the specified partial shape is completed is sequentially subtracted from the defined initial detailed shape in accordance with the processing order, and thus the detailed A shape is generated, and the shape output display unit generates and displays a polyhedron of a detailed shape generated by drawing a surface in the detailed definition unit.

According to the above configuration, the post-machining shape generation unit defines the post-machining shape by the definition unit arranged at a predetermined interval, and the tool to be used moves along the tool path based on the machining information. Since the processed shape is generated by sequentially subtracting the swept shape formed in step 1 from the initial processed shape in accordance with the processing order, it is possible to rapidly generate the processed shape of one or more processes. In addition to that, a partial shape specifying portion that specifies the shape of a part to be processed or a predetermined part of the final shape of one or more processing, and the specified partial shape are arranged at intervals narrower than the intervals described above. And a detailed shape generation unit which defines a detailed shape by a detailed definition unit, wherein the partial shape specifying unit gives a width corresponding to a tool diameter of the tool to a tool path of a tool in machining related to the specified partial shape. Since the specified partial shape is defined by this, only the specified partial shape can be defined more finely (in detail) than the processed shape. Therefore, it is possible to locally express a desired partial shape with high accuracy while suppressing an increase in data amount and processing time. Moreover, the detailed shape generation unit defines the initial detailed shape based on the defined specified partial shape, and includes the processing information of all the processing until the processing regarding the specified partial shape of one or more processings is completed. Since the detailed shape is generated by sequentially subtracting the swept shape based on the above-described specified partial shape from the initial detailed shape defined in accordance with the processing order, not only the processing of the relevant portion but also the partial shape It is possible to reflect all of the processing of (1) to the detailed shape, and the shape of the portion can be expressed more accurately. Then, since the shape output display unit generates and displays the polyhedron of the detailed shape generated by stretching the surface in the detailed definition unit, the specified partial shape is locally and accurately displayed in a stereoscopic manner, and the processing of the portion is performed. The correct evaluation of will be easy.

The shape output display unit generates a post-processing polyhedron generated by stretching a surface in the definition unit, and the initial detailed shape defined based on the partial shape specified from the generated post-processing polyhedron. It has a polyhedron generation unit that generates a partially removed polyhedron except for, and a shape synthesis display unit that collectively displays the entire processed shape as a three-dimensional shape by superimposing the generated partially removed polyhedron and the polyhedron of the detailed shape. Is desirable. By combining the processed shape and the detailed shape, which are polygonized in the polyhedron generation section in the shape synthesis display section, as a three-dimensional shape, it is possible to express it in accordance with the perspective of a person who "changes the perspective between the whole and the part" ( (Display), a natural expression method without feeling of discomfort and a detailed display of a portion necessary for determining the quality of the processing can be made, so that the evaluation of the processing can be further facilitated.

The definition unit and the detailed definition unit may be, for example, line segments arranged at appropriate intervals along the three-dimensional direction.

In order to achieve the above object, the feature of the machining evaluation method according to the present invention is that one or more machining from a predetermined work shape to a final shape of a product is defined in advance, and the machining after the machining is performed based on the machining. In a method of generating a post-shape and outputting and displaying the generated post-machining shape on a monitor, in advance, a processing order of the one or more processings, and processing information including at least information of a used tool and tool path information for each processing. Is defined, and the post-machining shape is defined by a definition unit arranged at a predetermined interval, and is formed by moving the used tool along the tool path based on the machining information. A post-machining shape is generated by sequentially subtracting the swept shape from the initial post-machining shape in accordance with the above-mentioned machining order, and at least one of the one or more machining is applied or a predetermined portion of the final shape is processed. The shape is specified, and the specified partial shape is defined by giving a width corresponding to the tool diameter of the tool to the tool path of the tool in machining related to the specified partial shape, and based on the specified partial shape defined Is defined as an initial detailed shape by a detailed definition unit arranged at an interval narrower than the above interval, and the processing information of all the processing until the processing regarding the specified partial shape of the one or more processing is completed. The detailed shape is generated by sequentially subtracting the sweep shape based on the defined initial detailed shape in accordance with the processing order, and a polyhedron of the detailed shape generated by stretching the detailed definition unit is generated. To display.

In order to achieve the above-mentioned object, a feature of the program for causing the machining evaluation apparatus according to the present invention to function is that a computer defines a machining definition that predefines one or more machining from a predetermined work shape to a final shape of a product. And a shape output display section for outputting and displaying the generated post-machining shape on a monitor. In the configuration for functioning as a machining evaluation device, the computer stores the machining definition including the machining order of the one or more machining and machining information including at least information of a tool to be used and tool path information for each machining. The machining definition storage unit and the post-machining shape are defined by definition units arranged at a predetermined interval, and the tool to be used moves along the tool path based on the machining information. The post-machining shape generation unit that generates the post-machining shape by sequentially subtracting the swept shape formed in step 1 from the initial post-machining shape according to the machining order, and at least one of the one or more machining operations is performed. Shape specifying part that specifies the shape of the part to be formed or a predetermined part of the final shape, and a detailed shape generation part that defines the specified partial shape as a detailed shape by a detailed definition unit arranged at an interval narrower than the interval. The partial shape specifying unit defines the specified partial shape by giving a width corresponding to the tool diameter of the tool to the tool path of the tool in machining regarding the specified partial shape, and the detailed shape The generation unit defines an initial detailed shape on the basis of the defined partial shape defined and uses the processing information of all the processing until the processing regarding the specified partial shape of the one or more processings is completed. The detailed shape is generated by sequentially subtracting the sweep shape based on the defined initial detailed shape in accordance with the processing order, and the shape output display unit generates the detailed shape by adding a surface to the detailed definition unit. The purpose is to generate and display a polyhedron of a shape. Further, this program is recorded in, for example, a recording medium.

According to the characteristics of the machining evaluation device, the machining evaluation method and the program for functioning as the machining evaluation device and the recording medium recording the program according to the present invention, it is possible to accurately and quickly generate and display the post-machining shape, The evaluation of processing became easy.

Other objects, configurations and effects of the present invention will be apparent from the following embodiments of the invention.

It is a hardware block diagram of the processing evaluation apparatus which concerns on this invention. It is a software block diagram of the processing evaluation apparatus which concerns on this invention. It is a figure which shows the process information of a 1st process typically. It is a figure which shows the process information of a 2nd process typically. It is a figure which shows the processing information of 3rd processing typically. It is a figure which shows the processing information of 4th processing typically. It is a figure explaining the definition of the processed shape before pocket processing. It is a figure explaining the definition of the shape after processing after pocket processing. It is a figure which shows a shape polyhedron after processing, (a) is an initial state, (b) is after 1st processing, (c) is after 2nd processing, (d) is after 3rd processing, (e) is 4th. Shown after processing. FIG. 6 is a partially enlarged view of the vicinity of the pocket edge portion of FIG. It is a figure explaining the specification of the partial shape of the processed part. It is a figure explaining the relationship between a tool, a path, and a process part. It is a figure explaining the definition of detailed shape. It is a figure which shows a detailed shape polyhedron, (a) is an initial state, (b) is after 1st processing, (c) is after 2nd processing, (d) is after 3rd processing, (e) is 4th processing. The latter is shown. It is a figure which shows a partial removal polyhedron. It is a figure which shows typically the detailed shape polyhedron when only the last process is performed. It is sectional drawing explaining the production|generation of a detailed shape polyhedron when only the last process is performed. It is a figure which shows a synthetic polyhedron. FIG. 12B is a partially enlarged view of the vicinity of the pocket edge portion of FIG. 12A.

Next, the present invention will be described in more detail with reference to the accompanying drawings as appropriate.
As shown in FIG. 1, the hardware configuration of the processing evaluation apparatus 1 according to the present invention is generally such that a monitor 3 and a processing apparatus 4 including a CPU 4a and a memory 4b are connected to a bus 2 including an address bus and a data bus. Further, an input device 5 including a keyboard and a mouse for operation is connected. As shown in FIG. 2, a program 10 for functioning as the processing evaluation apparatus 1 is stored in the hard disk, RAM, etc. included in the memory 4b, operated by an instruction of the input device 5 and processed by the CPU 4a, and the monitor 3 The processing result is displayed on.

As shown in FIG. 2, the program 10 according to the present invention generally includes a machining definition storage unit 11 that stores a machining definition that predefines one or more machining from a predetermined work shape to a final shape of a product. A post-machining shape generation unit 12 that generates a post-machining shape after the machining based on the machining, and a shape output display unit 13 that polygonizes the generated post-machining shape and outputs and displays the polygon on the monitor 3 as a three-dimensional shape.

The machining definition has a machining order of one or more machining and machining information including at least information on the tool T to be used and information on the tool path P for each machining. In the present embodiment, for example, "surface processing" (first processing) for cutting the upper surface of the product shape, "pocket processing" (second processing) for cutting a hole having a predetermined depth in the center, and providing holes at four corners " The processing order of "hole processing" (third processing) and "chamfering processing" (fourth processing) for imparting chamfer to the edge of the pocket is defined. Further, as shown in FIGS. 3A to 3D, information of tools T1 to 4 used in each machining and tool paths P1 to 4 are also defined. For convenience of explanation, the figure is shown by superimposing it on the final shape M of the product.

The post-machining shape generation unit 12 defines a post-machining shape R, which will be described later, by a definition unit D arranged at a predetermined interval S. In this embodiment, for example, a line segment arranged along the three-dimensional direction is used as the definition unit D. As illustrated in FIG. 4A, when pocket processing is performed on the center of the processed shape Ra, the processed shape Ra before pocket processing is represented by line segments D1 to D10 arranged at intervals S. Then, when the pocket machining is executed, as shown in FIG. 4B, a part of the line segments D3 to D8 corresponding to a portion (pocket portion ra) that is scraped off by the tool Ta from the post-machining shape Ra is removed, and the line segment is It gets shorter. Note that the example of the drawing is an example of line segments in the Z direction, but similar line segments are three-dimensionally arranged, and the processed shape R is defined as a solid. Thus, the processed shape R is defined as a set of line segments D (tri-dexel model). The interval S between the line segments D can be appropriately set in consideration of the accuracy of the processed shape R and the data amount (processing speed).

Here, the shape output display unit 13 forms a polyhedron by adding a surface to the surface of a set of definition units D and detailed definition units d that define the processed shape R and the detailed shape A and displays them. In the present embodiment, a surface is generated by connecting edges of line segments as the definition unit D and the detailed definition unit d with each other to form a side. For example, since FIG. 4 illustrates two-dimensionally, a surface (line) is shown as the contour of the processed shape indicated by reference signs Ra, Ra′, and ra, but in the actual three-dimensional shape, it becomes a polyhedron (polygon). It is displayed as a three-dimensional shape as shown in 5, 9, 10, and 12. For convenience of explanation, the reference numerals indicating the processed shape and the detailed shape and the reference numerals indicating the polyhedrons of these shapes are the same.

Then, the post-machining shape generation unit 12 determines a sweep shape (sweep shape) formed by the used tool T moving along the tool path P based on the processing information of the processing definition stored in the processing definition storage unit 11. The post-machining shape R is generated by sequentially subtracting from the initial post-machining shape R0 according to the defined machining order. In the present embodiment, for example, the post-machining shapes R1 to R4 are generated in the order of FIGS. 5A to 5E based on the machining information (FIGS. 3A to 3D) of the above-described first to fourth machining. As described above, the post-machining shape R indicates the remaining portion which is not scraped off (not removed) by the tool T used from the initial post-machining shape R0. In addition, in FIG. 5, a white background portion indicates a processed portion (surface).

By the way, for example, in the above-mentioned fourth processing, when the chamfer is smaller than the interval S of the line segment D, as shown in FIG. 6, even if the post-processing shape R4 is enlarged, the chamfer portion is formed in the pocket edge re1. Does not appear. Moreover, the corner portion re2 of the pocket is also represented as an irregular shape. This is because, as shown in FIG. 8, in each of the definition units Da to Dc arranged with a relatively large interval S, the processed shape R is separated from the correct shape (final shape M of the product) (does not match). This is because only the outline of the one-dot chain line connecting the ● in the figure can be obtained. Therefore, the machining cannot be correctly evaluated (simulated). In order to display (reproduce) the chamfer portion faithfully, the interval S of the line segment D may be narrowed to improve the display accuracy of the post-machining shape R, but the amount of data and its processing time increase dramatically. , The efficiency is extremely reduced.

Therefore, the processing evaluation apparatus 1 (program 10) according to the present invention, as shown in FIG. 2, determines the shape of a portion to be subjected to at least one of one or more processings or a predetermined portion of the final shape of a product. It further includes a specified partial shape specifying unit 14 and a detailed shape generation unit 15 that defines the specified partial shape as a detailed shape by a detailed definition unit d that is arranged at an interval s′ that is narrower (smaller) than the previous interval S.

In the present embodiment, the partial shape specifying unit 14 specifies, for example, the shape of the portion (edge of the pocket) to which the fourth processing (chamfering processing) selected from the above-described first to fourth processing is performed. As shown in FIGS. 7A and 7B, the tool path P4 indicates the locus of the center of the used tool T4. Further, the point t at which the tool T4 actually (actually) cuts is a conical portion and is separated from the tool path P4. Therefore, the partial shape can be specified, for example, based on the diameter TD of the tool T to be used for the fourth machining and the tool path P4 thereof which are defined in advance in the machining definition of the machining definition storage unit 11.

The detailed shape generation unit 15 defines as a detailed shape by the detailed definition unit d arranged at a space s′ that is narrower (smaller) than the space S. As illustrated in FIG. 8, a line segment d as a detailed definition unit arranged at a (fine) interval s′ smaller than the interval S between the line segments Da to Dc (one-dot chain line in the drawing) of the processed shape R. The detailed shape is defined by (two-dot chain line in the figure). This makes it possible to obtain the contour of the chain double-dashed line connecting the ● and Δ in the figure, and the chamfer portion can be reproduced more accurately.

However, it is important to define the detailed shape A only in the partial shape specified by the partial shape specifying unit 14. That is, if the entire processed shape R is defined by the definition unit D having a small interval (fine), the accuracy of the shape evaluation is secured, but the data amount and the processing time increase dramatically, which is not realistic. .. Therefore, in the present invention, only the partial shape specified by the partial shape specifying unit 14 is defined more finely (in detail) than other parts.

In this way, when confirming (simulating) the details of machining, for example, when machining a fine surface such as finishing, it is possible to locally display (reproduce) only that part with higher accuracy. Therefore, it is possible to achieve both improvement in accuracy and suppression of decrease in processing speed.

Further, in the present embodiment, the shape output display unit 13 generates the post-machining shape polyhedron R as a polyhedron of the post-machining shape R generated by forming a surface on the definition unit D, and specifies from the created post-machining shape polyhedron R. The processed shape R as a whole is collectively displayed as a three-dimensional shape by superimposing the generated partial removal polyhedron B and the polyhedron of the detailed shape A on the polyhedron generation unit 13a that generates the partially removed polyhedron B excluding the partial shape. It has a shape synthesis display unit 13b. Further, the polyhedron generator 13a generates a detailed shape polyhedron as a polyhedron of the detailed shape A generated by drawing a surface on the detailed definition unit d.

The processing evaluation device 1 (program 10) further includes a shape storage unit 19. As shown in FIG. 2, the shape storage unit 19 includes a final shape storage unit 19a in which final shape data of a product, which is a final shape of processing, is stored, and a work shape (a rectangular parallelepiped shape, a cylindrical shape, or the like) for performing a predefined processing. The work shape storage unit 19b in which the material shape) is stored, and the post-machining shape storage unit 19c that stores the generated post-machining shape, post-partial removal machining shape, and the like.

Here, with reference to the accompanying drawings as needed, the processing evaluation procedure will be described taking the procedure for evaluating the above-described fourth processing chamfer as an example.
First, based on the workpiece shape W to be machined, the initial post-machining shape R0 is set. The initial post-machining shape R0 is defined as a rectangular parallelepiped as shown in FIG. 5A, for example, based on the work shape selected by the post-machining shape generation unit 12 from the work shape storage unit 19b. In this way, the initial post-machining shape R0 matches the workpiece shape W (material shape before the start of machining).

Next, the post-machining shape generation unit 12 sets the shape (sweep shape) to be removed based on the machining information of the machining definition stored in the machining definition storage unit 11 as shown in FIGS. From the processing order (the order of FIGS. 5A to 5E), the processed shape R4 after the fourth processing is generated. However, since the chamfer defined as the fourth processing is smaller than the interval S of the definition unit D, even if the vicinity of the edge re1 of the pocket of the processed shape R4 is enlarged and displayed as shown in FIG. 4 Processed chamfer is not displayed.

As shown in FIG. 7A, the partial shape specifying unit 14 assigns (offsets) a width corresponding to the tool diameter TD of the tool T4 to the tool path P4 of the tool T for the fourth machining defined in the machining definition in advance. Is specified (defined) as a partial shape. Then, the detailed shape generation unit 15 defines the initial detailed shape A0 shown in FIG. 9A based on the specified partial shape. On the other hand, as shown in FIG. 10, the polyhedron generator 13a generates a partially removed polyhedron B in which the initial detailed shape A0 is removed from the processed shape R4 after the fourth processing. This is because when the post-machining shape R4 after the fourth machining and the initial detailed shape A0 are displayed at the same time at the time of superimposing (composite display of polyhedrons) described later, the initial detailed shape A0 does not overlap. This is because

Next, the detailed shape generation unit 15 processes each piece of processing information (FIGS. 3A to 3D) of all the processing until the fourth processing on the specified partial shape of the first to fourth processing predefined in the processing definition is completed. ), the sweep shape formed by the tool T moving along the tool path P is sequentially subtracted from the initial detailed shape A0 according to the machining order (the order of FIGS. 9A to 9E). The detailed shape A4 is generated.

Here, the first and second processes shown in FIGS. 9B and 9C do not directly process the portion (edge of the pocket) specified by the process, and therefore are not directly related to the detailed shape A4. It can be regarded as processing. Further, since the third processing shown in FIG. 9D is located outside the pocket that is the processing portion of the fourth processing, it does not affect the generation of the detailed shape A4. Therefore, when generating the detailed shape A4, it is possible to rapidly generate the detailed shape A4 by executing only the fourth processing, which is the final processing.

However, since the initial detailed shape A0 is generated based on the tool path P4 of the fourth machining and the diameter TD of the tool T4 used, only the fourth machining (final machining) is executed on the initial detailed shape A0. The detailed shape A4′ shown in FIG. 11A does not match the detailed shape A4 shown in FIG. 9(e). The reason is that the fourth processing for imparting the chamfer to the edge portion re1 of the pocket is performed on the post-processing shape cut by the first processing for cutting the upper surface and the second processing for forming the pocket, As shown in FIG. 11B, when only the fourth machining (final machining) is performed on the initial detailed shape A0, the cutting portion C4 (champfer) resulting from the fourth machining is changed from the initial detailed shape A0 to the tool T4 used. This is because the cut portions C1 and C2 caused by the first and second machining remain without being removed by the above. Therefore, the accurate detailed shape A cannot be specified only by the final processing.

Since the third processing is to process the outer portion of the pocket, it may be omitted from the generation (subtraction) of the detailed shape. Although it is obvious in the drawing of FIG. 9D, whether or not the third machining affects the generation of the detailed shape is not clear only from the information on the tool and the tool path defined in the machining definition. , Is found by the subtraction process described above. However, if the generation of the detailed shape is not affected as in the case of the third processing, it can be determined that calculation is not necessary at an early stage of generation (subtraction) of the detailed shape, and the processing speed is hardly affected.

As described above, in the present invention, the detailed shape generation unit 15 performs the subtraction process for all the processes up to the specified process registered in the process definition even when obtaining the detailed shape for the specified process. ..

In the example of the present embodiment, the polyhedron generation unit 13a generates a processed shape polyhedron R4 of the processed shape R4 after the fourth processing by forming a surface on the definition unit D, and also forms a surface on the detailed definition unit d. Thus, the detailed shape polyhedron A4 of the detailed shape A4 obtained by sequentially subtracting the sweep shape based on all the processing information up to the fourth processing is generated. Further, the partially removed polyhedron B in which the specified partial shape (initial detailed shape A0) is removed from the generated post-processing shape polyhedron R4 is generated.

Then, the shape combination display unit 13b superimposes the partially removed polyhedron B and the detailed shape polyhedron A4 which are polygonized by the polyhedron generation unit 13a, thereby combining and displaying the combined polyhedron B′ shown in FIG. 12A, and the processed shape R4. Is displayed as a three-dimensional shape at once. As shown in FIG. 12B, it can be seen that a chamfer appears at the edge ae1 of the pocket of the detailed shape A4 and the corner portion ae2 of the pocket is also finished in an arc shape. The difference is clear when compared with FIG. In this way, by integrating the post-processing shape R and the detailed shape A, it is possible to express (display) according to the view performed by a person, "changing the view between the whole and the part", and a natural expression without discomfort. It becomes a method, and the evaluation (confirmation) of processing becomes easy.

Finally, we mention the possibilities of other embodiments of the invention. The same members as those in the above-described embodiment are designated by the same reference numerals.
In the above-described embodiment, an example has been described in which the partial shape identifying unit 14 identifies the shape of the portion to be processed by at least one of the one or more processings. However, the specification of the partial shape is not limited to this, and the partial shape specifying unit 14 may specify the shape of a predetermined (arbitrary) part of the final shape of the product, for example. In such cases, the partial shape is preferably a simple shape because of the rapid subtraction process of the subsequent generation of the detailed shape. In addition, in the example of the above-described embodiment, the shape of the portion to be subjected to the fourth processing of the first processing to the fourth processing has been described as an example, but this is merely an example, and the type, number, and identification of the processing. The processing order to be performed is not limited to the above example.

Further, the partial shape specifying unit 14 specifies the area in which the width corresponding to the tool diameter TD of the tool T used (offset) is given as the partial shape to the tool path P of the tool T defined in advance in the machining definition, This is merely an example, and the present invention is not limited to the specifying method of the above embodiment.

In the above embodiment, the entire processed shape is collectively displayed by superimposing the detailed shape polyhedron of the detailed shape A generated on the partially removed polyhedron generated by the shape synthesis display unit 13b. However, only the generated detailed shape polyhedron may be displayed alone or the generated processed shape polyhedron and the detailed shape polyhedron may be separately arranged and displayed (separate window). However, when the partially removed polyhedron and the detailed shape polyhedron are integrated (synthesized) and displayed, a natural expression is obtained and the processing is easily evaluated, so that the above-described embodiment is excellent.

In the above embodiment, the definition unit D and the detailed definition unit d are line segments (tri-dexel model) arranged along the three-dimensional direction, but the present invention is not limited to this.

The processing evaluation device, the processing evaluation method, and the program for functioning as the processing evaluation device according to the present invention can be used in, for example, a CAD/CAM system, a three-dimensional CAM system, or the like.

1: machining evaluation device, 2: bus, 3: monitor, 4: processing device, 5: input device, 10: program, 11: machining definition storage unit, 12: post-machining shape generation unit, 13: shape output display unit, 13a: polyhedron generation unit, 13b: shape synthesis display unit, 14: partial shape specification unit, 15: detailed shape generation unit, 19: shape storage unit, A: detailed shape (polyhedron), B: partially removed polyhedron, B': Synthetic polyhedron, D: Definition unit (line segment), d: Detailed definition unit (line segment), M: Final shape of product, P: Tool path, R: Shape after machining (polyhedron), S: Interval, T: Use Tool, W: Work shape

Claims (6)

A machining definition storage unit that stores a machining definition that predefines one or more machining from a predetermined work shape to a final shape of a product, and a post-machining that generates a post-machining shape after the machining based on the machining. A processing evaluation device comprising a shape generation section and a shape output display section for outputting and displaying the generated processed shape on a monitor,
The machining definition has a machining order of the one or more machining, and machining information including at least information of a used tool and tool path information for each machining,
The post-machining shape generation unit defines the post-machining shape by a definition unit arranged at a predetermined interval, and the used tool moves along the tool path based on the processing information. The processed shape is generated by sequentially subtracting the formed swept shape from the initial processed shape in accordance with the processing order,
A partial shape specifying part that specifies the shape of a part to be processed or at least a predetermined part of the final shape of the one or more processes;
Further comprising a detailed shape generation unit for defining the specified partial shape as a detailed shape by a detailed definition unit arranged at an interval narrower than the interval,
The partial shape specifying unit defines the specified partial shape by giving a width corresponding to the tool diameter of the tool to the tool path of the tool in the machining related to the specified partial shape,
The detailed shape generation unit defines an initial detailed shape based on the defined partial shape that has been defined, and performs the above-described processing of all processing until the processing related to the specified partial shape of the one or more processings is completed. Generate the detailed shape by sequentially subtracting the sweep shape based on processing information from the defined initial detailed shape in accordance with the processing order,
The processing evaluation apparatus, wherein the shape output display unit generates and displays a polyhedron of a detailed shape generated by stretching a surface in the detailed definition unit. The shape output display unit generates a processed polyhedron generated by stretching a surface in the definition unit, and the initial details defined based on the specified partial shape from the generated processed polyhedron. A polyhedron generation unit that generates a partially removed polyhedron excluding the shape, and a shape synthesis display unit that collectively displays the entire processed shape as a three-dimensional shape by superimposing the generated partially removed polyhedron and the polyhedron of the detailed shape. The processing evaluation apparatus according to claim 1, which has. The processing evaluation device according to claim 1, wherein the definition unit and the detailed definition unit are line segments arranged along a three-dimensional direction. One or more machinings from a predetermined work shape to a final shape of a product are defined in advance, a post-machining shape after the machining is generated based on the machining, and the generated post-machining shape is output and displayed on a monitor. Evaluation method,
In advance, a machining order of the one or more machining and machining information including at least information on a tool to be used and information on a tool path are defined for each machining,
The post-machining shape is defined by a definition unit arranged at a predetermined interval, and the swept shape formed by the tool used along the tool path is initialized based on the machining information. The processed shape is generated by sequentially subtracting from the processed shape according to the processing order,
At least one of the one or more processes is specified, or the shape of a predetermined part of the final shape is specified, and the tool path of the tool in the processing related to the specified partial shape corresponds to the tool diameter of the tool. By defining the specified partial shape by giving a width,
Based on the defined partial shape defined, a detailed definition unit arranged at an interval narrower than the interval is defined as an initial detailed shape, and the machining related to the specified partial shape of the one or more machining is completed. Up to generate the detailed shape by sequentially subtracting the sweep shape based on the processing information of all the processing from the initial detailed shape defined in accordance with the processing order,
A processing evaluation method for generating and displaying a polyhedron of a detailed shape generated by stretching a surface in the detailed definition unit. A computer includes a machining definition storage unit that stores a machining definition that predefines one or more machining processes from a predetermined work shape to a final shape of a product, and generates a post-machining shape based on the machining. A program for functioning as a machining evaluation device comprising a post-machining shape generation unit for performing, and a shape output display unit for outputting and displaying the generated post-machining shape on a monitor,
Computer,
A machining definition storage unit that stores the machining definition having a machining order of the one or more machining and machining information including at least information on a tool to be used and tool path information for each machining;
The post-machining shape is defined by a definition unit arranged at a predetermined interval, and the sweep shape formed by moving the tool to be used along the tool path based on the machining information is defined as an initial value. A post-machining shape generation unit that generates the post-processing shape by sequentially subtracting the post-processing shape from the post-processing shape according to the processing order;
A partial shape specifying part that specifies the shape of a part to be processed or at least a predetermined part of the final shape of the one or more processes;
The specified partial shape is made to function as a detailed shape generation unit that defines it as a detailed shape by a detailed definition unit arranged at an interval narrower than the interval,
The partial shape specifying unit defines the specified partial shape by giving a width corresponding to the tool diameter of the tool to the tool path of the tool in the machining related to the specified partial shape,
The detailed shape generation unit defines an initial detailed shape based on the defined partial shape that has been defined, and performs the above-described processing of all processing until the processing related to the specified partial shape of the one or more processings is completed. Generate the detailed shape by sequentially subtracting the sweep shape based on processing information from the defined initial detailed shape in accordance with the processing order,
The shape output display unit is a program for generating and displaying a polyhedron of a detailed shape generated by stretching a surface in the detailed definition unit. A recording medium recording the program according to claim 5.

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