JP2008293469A - Cad system, computer program for carrying out same, and recording medium recording computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a CAD system enabling a designer to easily and rapidly change design in a designing stage, and to provide a computer program for carrying out the CAD system, and a recording medium recording the program. <P>SOLUTION: A master component creating section creates master components 51-54 with attributes selected from a master component attribute database through an input device. Slave components are selected from a component unit database 14 through the input device, and the arranged positions of the slave components are instructed to the master components. A shell unit creating section thereby creates component shells and/or unfinished shells at the master components 51-54 with the corresponding attributes based on component shell basic data 400 and unfinished shell basic data 300, and creates a shell unit 20 associating the component shells with the unfinished shells. The shell unit 20 is displayed on a monitor, superposed on the master components 51-54. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a CAD system, a computer program for executing the CAD system, and a recording medium on which the computer program is recorded.

  2. Description of the Related Art Conventionally, as a CAD system that generates processing information (processed shape body) of a processing part from which material is removed by machining or the like, for example, a system described in Patent Document 1 is known. This CAD system selects a processing type defined in advance, selects a processing part from CAD data of an original product shape body that is a final product, extracts shape information of the processing part, and processes the extracted shape The tool and parameters are determined to generate a machined shape body that becomes machining information. In this system, the machining shape can be extracted from the CAD data of the final product delivered by the designer, the machining type and machining site can be selected, the data entry work can be greatly reduced, and the machining work can be performed more efficiently. It can be carried out.

On the other hand, for example, two-dimensional CAD systems described in Non-Patent Documents 1 to 3 are known as CAD systems that generate machining information while designing at a mold design stage. This document describes and discloses the following matters.
A) In designing a mold in which parts are assembled (Non-Patent Document 1 “Introduction”, Lines 1 to 7, Non-Patent Document 2 “Introduction”, Lines 1 to 3 and Non-Patent Document 3, “Introduction”. 1st to 3rd lines)
B) A database is created by registering in the “plate disassembly registration file” together with each part pre-assembled in the mold and a processing method corresponding to each plate of the part (Non-Patent Document 1, page 1; Page and Non-Patent Document 3 page 1 to page 2). Parts and processing methods are registered in this database (Non-Patent Document 1, pages 4 to 9, Non-patent document 2, page 4, 11-page 13 and Non-patent document 3, page 7- Page 11). Further, the diameter and depth of the processing method can be set by a variable or a variable equation (Non-Patent Document 3, pages 5 and 9).
C) A plurality of plates are set by inputting the plate thickness and material (Non-Patent Document 1, page 17, Non-patent document 2, page 39 and Non-patent document 3, pages 12-15).
D) Select a registered part and indicate the position on the plate (Non-patent Document 1, page 11, lines 13 to 15, Non-patent document 2, page 33, lines 1 to 9 and Non-patent document 3) 16th line, 16th line to 17th page).
E) Plotting is performed based on the processing data registered for each plate, and a part drawing for each plate is created (Non-patent Document 1, page 11, line 13 to line 15, page 13 “FIG. 2”). -2 ", Non-Patent Document 2" Introduction "lines 7-8, page 2, lines 2-8, page 31" Figure 2-8 "and Non-Patent Document 3," Introduction "line 6. -7th line, 18th page, 19th line-21st line, 24th page "Figure").
F) A sectional view or an assembly drawing of the mold is obtained by superimposing the component drawings of each plate. (Non-Patent Document 1, page 2, lines 2 to 4, page 11, lines 2 to 3, page 18, "Screen 2-5", Non-Patent Document 2, page 2, lines 2 to 4 Line, page 41, “screen 3-6” and non-patent document 3, page 3, lines 1 to 3, page 21, “figure”).

A modeling method as described in Patent Document 2 is also known as a three-dimensional CAD system. This modeling method is
a) When modeling the mounted part to which the mounting part is mounted,
b) Preliminarily constructing machining data relating to a plurality of different attachment parts and attachment parts to be processed as attachment parts corresponding to each attachment part as a database,
c) During modeling, after modeling a mounted part with multiple members stacked,
e) By selecting a mounting member to be mounted on the mounted part and inputting the mounting conditions of the selected mounting part,
d) Arithmetic processing for obtaining machining data corresponding to a to-be-attached machining portion in each member of the modeled to-be-attached part based on the machining data in the database corresponding to the selected attachment member and the attachment conditions, and the obtained machining data F) A part drawing or an assembly drawing is obtained by executing a modeling process for adding a part to be attached to each member of the part to be attached.

  In the above modeling method, “mounting part 3” is “bolt 20” (paragraph 0015), and “attached member 2” is “block 10 in which three block members 11, 12, and 13 are stacked”. (Paragraph 0016). In addition, in the paragraph 0021, from the description that “a molding die generally uses a plate member as a mounted part, and uses a bolt, an ejector pin, etc. as a mounting part”, the modeling method according to Patent Document 2 is It is mainly used for mold design.

Here, the invention described in Non-Patent Documents 1 to 3 (hereinafter referred to as “preceding invention”) and the invention described in Patent Document 2 (hereinafter referred to as “subsequent invention”) are compared.
In the prior invention, the “plate disassembly registration file” is a file in which processing methods for parts to be attached to the plate are registered, and corresponds to the “database” in the subsequent invention. In the prior invention, a plurality of plates are set, which corresponds to “modeling a mounted part in which a plurality of members are stacked” in the subsequent invention. Further, in the preceding invention, “plotting based on the processing method registered for each plate and creating a component diagram for each plate” is added to each member of the mounted workpiece in the subsequent invention. This corresponds to “execution of modeling process”. The “part diagram” in the subsequent invention is a diagram in which block members obtained by executing the modeling process are stacked (paragraphs 0019, FIGS. 6 and 7), and the “assembly diagram” is the part diagram. This is an assembly drawing with parts attached (paragraph 0020, FIGS. 8 and 9). These “part drawings” and “assembly drawings” correspond to “a cross-sectional view or assembly drawing of a mold obtained by superimposing the component drawings of each plate” in the prior invention.

  That is, the configuration requirements A) to F) of the CAD system of the prior invention and the invention configuration requirements a) to f) in the modeling method of the 3D CAD system of the subsequent invention are the same, and these inventions are two-dimensional. Or 3D. Therefore, it can be understood that the prior invention and the subsequent invention are substantially the same invention.

However, in any of the above documents, when an attachment position is indicated, modeling processing (plotting) is performed on the member (plate) based on the selected condition. For this reason, for example, when a change in mounting parts occurs after the modeling process, it is necessary to recalculate the contents after the modeling process, and the efficiency of the design change is reduced. In addition, when changing the plate thickness of a member, it is necessary to perform the calculation again, delete the attached portion added and return it to the state before the modeling process, and then perform the modeling process again. It was.
International Publication WO2004 / 038522 Japanese Patent No. 3225349 Issued by Nippon Olivetti Co., Ltd. “Speedy / mill plate disassembly” (2nd edition, 1st edition, issued on March 2, 1993) Published by Nippon Olivetti Co., Ltd. “Speedy / mill plate disassembly function 2” (1st edition, 1st edition, issued on February 20, 1994) Published by Olivetti Japan "Speedy mill / Win plate disassembly (I)" (1st edition, 1st edition, issued on November 1, 1995)

  In view of the conventional situation, the present invention provides a CAD system that allows a designer to easily and quickly change a design in a design stage, a computer program for executing the CAD system, and a recording medium on which the computer program is recorded. The purpose is to provide.

  In order to achieve the above object, the CAD system according to the present invention has a processing device, a monitor for displaying an image, and an input device. The processing device includes a shell unit generation unit, a parent part generation, and the like. A component part database and a parent component attribute database, wherein the component unit database is component shell basic data of a child component attached to the parent component and raw shell basic data of a portion removed by machining in the parent component The parent part attribute database includes an attribute of the parent part, and the parent part generation unit creates a parent part of the attribute selected from the parent part attribute database via an input device, and from the part unit database By selecting the child part via the input device and instructing the parent part to place the child part, A shell unit generation unit generates a part shell and / or a raw shell to a parent part having a corresponding attribute based on the part shell basic data and the raw shell basic data, and associates the part shell and the raw shell with each other to form a shell unit. The shell unit is superimposed on the parent part and displayed on the monitor.

  Due to the above characteristics, the raw shell basic data representing the shape of the raw shell does not have processing information, but has a corresponding parent part attribute. Therefore, only the shape to be removed by machining can be displayed superimposed on the parent part, and the shape of the machining site can be confirmed and the shape can be changed without modeling (plotting). In addition, a shell unit in which the raw shell and the component shell are associated by the shell unit ID is generated. Therefore, by selecting and instructing this shell unit, the entire shell unit can be moved, deleted, etc., and design changes can be made easily and quickly.

  Here, it is preferable that the parent part generation unit generates a plurality of the parent parts, and the shell unit generation unit generates a shell unit continuous with the plurality of parent parts.

  The shell unit may be interlocked with the associated part shell and raw shell. The shell unit may be interlocked with the parent part. Further, the shell unit generation unit may generate a plurality of shell units in association with each other, and the plurality of shell units may be interlocked with each other.

  The present invention can also be implemented as a computer program for executing any one of the CAD systems described above and a recording medium on which the computer program for executing the CAD system is recorded.

  According to the above-described CAD system according to the present invention, the computer program for executing the CAD system, and the characteristics of the recording medium on which the computer program is recorded, the designer can easily and quickly change the design at the design stage. became.

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

  Next, the present invention will be described in more detail with reference to the accompanying drawings as appropriate. In the present embodiment, description will be given by taking as an example the design of a mold made up of a plurality of plates and the creation of machining data for the attachment parts of the parts attached to the plates. However, in the following specification, the plate is described as “parent part”, but the plate is only an example of “parent part”.

The configuration of the CAD system 1 according to the present invention will be described.
As shown in FIG. 5, a CAD system 1 according to the present invention is connected to a bus 2 including an address bus and a data bus, a monitor 3, a CPU 4a serving as a processing device 4, and a memory 4b, and an operation keyboard 6a, An input device 6 including a mouse 6b and a digitizer 6c is connected. The software shown in FIG. 6 is stored in a memory 4b composed of a hard disk, a RAM, and the like. The software is operated by an instruction from the input device 6 and processed by the CPU 4a. Data created by CAD is transferred as CAM data to the NC device 8 via the network adapters 7a and 7b, recording elements, etc., and processed.

  FIG. 6 shows a software configuration 10 implemented by the CAD system 1 according to the present invention. This software configuration 10 includes a component unit database 14 (hereinafter referred to as “DB”) storing raw shell basic data 300 and component shell basic data 400, and a parent component attribute storing parent component attributes. A component attribute DB 16 and a machining method DB 17 stored with a machining method composed of a single or plural series of steps are provided. The shell unit generator 13 generates a shell unit based on the data in the component unit DB 14. The parent part generation unit 15 generates a single or a plurality of parent parts based on the data of the parent part attribute DB 16. The processing shell generation unit 18 generates a processing shell based on the generated shell unit and data of the processing method DB. These generation units 13, 15, and 18 are input-controlled via the display control unit 11 and the input control unit 12, and display the parent part, shell unit, processing shell, and the like on the previous monitor 3.

  An unprocessed shell, a component shell, a shell unit, and a processed shell will be described with reference to FIGS. The unprocessed shell represents the shape of the portion removed from the corresponding parent part by processing as solid data. The part shell represents the shape of a child part, which is a part attached to a corresponding parent part, as solid data. The shell unit is composed of a raw shell and / or a component shell. As illustrated in FIG. 1, the shell unit 20 includes a raw shell group 30 including first to sixth raw shells 31 to 36, and a part shell group 40 including first to third part shells 41 to 43. It becomes more. The processing shell is a processed shape body that is specifically processed.

  Each shape data for generating the raw shell and the component shell is stored in advance in the component unit DB 14 as the raw shell basic data 300 and the component shell basic data 400.

  As shown in FIGS. 3 and 6, the component unit DB 14 includes a first classification group 110, a second classification group 120, and a third classification group 130. In this embodiment, the 1st classification group 110 consists of a plurality of parts 111-11N as a classification according to the purpose of a child part, a use, etc. The second classification group 120 is classified into types 121a to 12Nz as classifications according to the types of the parts for each of the parts 111 to 11N. The third classification group 130 is classified into nominal diameters 131a to 13Nz for each type 121a to 12Nz. The raw shell basic data 300 and the part shell basic data 400 are classified and stored according to the part, type, and nominal diameter.

  Examples of the parts include punch and bushes, stripper guide pins and bushes, half piercings, burring, pilots, miss detection related parts, and the like. In addition, as a type, for example, in punch and bushing, for each shape such as corner, corner R, circle, cutout circle, oval, etc., a combination of bushing and bushing, a combination of processing hole and bushing, processing hole and processing There are combinations with holes. The classification of the component unit DB 14 can be changed as appropriate according to the shape of the corresponding parent component, the processing shape and number of each basic data stored, and the like. The above-mentioned first to third classifications, which are parts, types, and nominal diameters, are merely examples of classification.

  As shown in FIGS. 2 and 3, the raw shell basic data 301a to 30N include machining shapes 301a to 30Na, machining depths 301b to 30Nb, machining directions 301c to 30Nc, machining methods 301d to 30Nd, and placement destination parent parts 301e. It is comprised by each data of -30Ne.

  “Processed shape” is data indicating the size and range of the parent part of the part to be processed. “Processing depth” is data indicating the size in the thickness direction of the parent part of the processing part. The “machining method” is data indicating a machining method stored in a machining method DB 17 described later. The “arrangement destination parent part” is data indicating a parent part attribute stored in a parent part attribute DB 16 described later.

  Each component shell basic data 401 to 40N is composed of data of component shapes 401a to 40Na, catalogs 401b to 40Nb, directions 401c to 40Nc, base point / origin point information 401d to 40Nd, and placement destination parent components 401e to 40Ne. .

  “Part shape” is data indicating the size and range of a child part attached to the parent part. The “catalog” is data such as a catalog number and a product number necessary for ordering when the child part is a commercial product. “Base point / origin point information” is three-dimensional position information of the mounting position in the parent part which is a reference when the base part is arranged. The “child component” is a component attached to the parent component, and corresponds to, for example, a bush or a pin.

  The parent part is, for example, a plate-like plate as shown in FIGS. 1 and 2 and is processed at a site where the child part is attached. The parent part has parent part data including data of parent part attributes 161 to 16N.

  In the parent part attribute DB 16 shown in FIG. 6, parent part attributes 161 to 16N are stored. As shown in FIG. 4, the parent part attributes 161 to 16N are constituted by attribute names 161a to 16Na, identifiers 160b to 16Nb, and directions 161c to 16Nc that define the attributes of the parent part. Here, the “identifier” is an ID number corresponding to the attribute name. Further, in the present embodiment, “direction” stores whether “upper mold” or “lower mold” in a mold composed of a parent part is stored. Examples of the parent part attribute include a punch plate, a stripper backing, a stripper plate, a die plate, and a die backing. Based on the parent part attributes 161 to 16N and various inputted parameters, the parent part generation unit 15 generates parent parts 51 to 54 as shown in FIG.

  As illustrated in FIG. 4, the parent part data 501 to 504 includes parent part attributes 501a to 504a, materials 501b to 504b, and comments 501c to 504c. The “parent part attribute” is a pointer to the parent part attributes 161 to 16N stored in the parent part attribute DB 16. The “comment” is information such as remarks and notes related to the parent part. Since the parent part data 501 to 504 are not data that can be directly referred to from the displayed drawing, the parent part generation unit 15 generates the parent part data. Since parameters such as dimensions described later are shown on the drawing, they are not held as the parent part data 501 to 504.

  As described above, the unprocessed shell, the component shell, and the parent component have parent component attribute data stored in the parent component attribute DB 16. As illustrated in FIG. 2, the parent part attribute 501 a of the parent part data 501 has a pointer to the parent part attribute 163. In addition, the placement destination parent parts 311e and 312e of the raw shell basic data 311 and 312 also have a pointer to the parent part attribute 163. Further, the placement destination parent part 411 e of the part shell basic data 411 also has a pointer to the parent part attribute 163. By making each parent part attribute the same, the unprocessed shells 31 and 32 and the part shell 41 can be arranged in the corresponding parent part 51.

  The shell unit generation unit 13 shown in FIG. 6 extracts raw shell basic data and component shell basic data corresponding to the raw shell and the component shell, and assigns the same shell unit ID to these basic data to provide the shell unit. Is generated. As illustrated in FIG. 2, the same shell unit ID 200 is assigned to the basic data 311, 312, and 411 of the extracted raw shells 31 and 32 and the component shell 41. This shell unit ID is also given to each raw shell and each part shell corresponding to each parent part. Thereby, as illustrated in FIG. 1, the shell unit 20 can be continuously and integrally generated on the parent parts 51 to 54 and can be displayed on the monitor 3.

  As shown in FIGS. 2 and 6, processing methods 171 to 17N are stored in the processing method DB 17. The “machining method” is data such as a specific machining type, a machining procedure, and a tool used for machining the shape represented by the unmachined shell into a parent part. Based on this data, the machining shell generator 18 produces a machining shell 60 as shown in FIGS. Next, a set operation of the parent part and the machining shell is performed according to the second instruction.

  That is, the processing shell represents a processed shape that is specifically processed. By referring to the processing shell, it is possible to refer to the processing information. In other words, the unprocessed shell does not include processing information for processing the processing shape for attaching the child component, and has only information on the shape to be processed and the target parent component. Therefore, since the raw shell basic data held by the raw shell does not have the processing information itself, the data capacity is small, and the design change can be performed quickly and easily.

Next, a procedure for using the CAD system 1 according to the present invention will be described with reference to FIGS.
First, the parent parts 51 to 55 are created via the input device 6 in the parent part creation window 600 as shown in FIG. 8 (S1). As shown in the figure, the attribute of the parent part is selected, and the attribute of the parent part to be created is determined. The determination of the attribute of the parent part is performed, for example, by selecting the parent part attributes 161 to 16N registered in advance in the parent part attribute DB 16 via the parent part attribute display unit 602. Next, by inputting and specifying each parameter of the parent part in the parameter input unit 610, the parent part generation unit 15 creates a plate-like parent part. In the present embodiment, the parameters of the parent part are the dimensions of the parent part, the interval between the parent parts, and the surface color and material for displaying the parent part on the monitor 3. These parameters are input and designated in the first to sixth input sections 611 to 616. Then, the created parent parts 51 to 55 are displayed on the monitor 3 via the display control unit 11 in a manner as shown in FIG. 10, for example. The above parameters are not limited to those described above, and various modifications are made according to various shapes of the parent part. Furthermore, after selecting the parent part attribute, the parent part name display unit 601 may automatically display the parent part name. The parent part attribute may be selected by reading from a file.

  When the parent part is created, a child part is selected via the input device 6 in a child part selection window 700 as shown in FIG. 9, for example, and shell units 20a and 20b are created (S2). In the first to third classification selection sections 701 to 703, the parts, type, and nominal diameter of the component unit DB 14 are displayed. By specifying them in order, the child parts to be placed on the parent part are selected. When a child part is selected, part basic data and raw shell basic data corresponding to the selected child part are extracted. It should be noted that each category can be selected by reading from a file.

  After selecting a child part, an arbitrary position on the parent part to place the child part is designated. Thereby, the shell unit production | generation part 13 produces | generates a raw shell and a component shell based on the raw shell basic data and component basic data of the selected child component. Each of these basic data has a pointer of the parent part attribute of the corresponding parent part. Therefore, for example, as shown in FIG. 2, the unprocessed shells 31 and 32 and the component shell 41 are generated on the parent component 51 having the same attribute 163.

  Further, at the same time when these raw shells and component shells are generated, the same shell unit ID 200 is assigned to each of these basic data, and the shell unit 20a is generated based on the shapes of the parent components 51 to 55. And the shell unit 20a linked | related by the same shell unit ID is displayed so that it may overlap with the parent components 51-55, as shown in FIG.

  The same shell unit ID may be given to the shell units 20a and 20b to form a pair of shell units 20a and 20b. By assigning the same shell unit ID, a plurality of shell units can be associated with each other to be integrated into a single shell unit. In such a case, each shell unit is managed by a relative position based on the arrangement position with respect to the position on the arranged parent part.

  Next, a case where the design change is performed after the child parts are arranged in the parent part by the above-described steps will be described. When the design is changed (S3), the shape of the shell unit generated in the above step S2 is changed (S4). If the design change is not performed, a processing step (S5) described later is executed.

  For example, when the arrangement position of the child component is changed from the position shown in FIG. 12A to the position shown in FIG. 12B, the shell units 20a and 20b including the component shell indicating the child component are instructed and moved. Since the unprocessed shell group and the component shell group are associated with each other by the same shell unit ID, the shell units 20a and 20b can be moved together in an integrated manner. Furthermore, since each raw shell and part shell of the raw shell group and the part shell group have the parent part attribute of the placement destination, they can be placed on the same parent part as before the movement. In addition, it is not restricted to the case where the whole shell units 20a and 20b are selected. By instructing a component shell indicating a child component to be moved, the shell units 20a and 20b including the component shell can be moved in conjunction with each other. The same applies to the case of deletion, not limited to movement.

  Further, when the thickness of the portion 56 of the parent part 51 is changed as shown in FIG. 13, the shell unit generator 13 changes the shape of the shell unit 20b so as to match the changed shape of the parent part 51 ''. . Since the raw shell 32 and the component shell 41 have a parent component attribute corresponding to the parent component 51, the unprocessed shell 32 and the component shell 41 are changed in accordance with the shape of the portion 56 where the thickness of the parent component 51 is changed. Then, the raw shell 32 'and the component shell 41' are displayed. That is, the shell unit 20b can be changed in conjunction with the change of the thickness of the parent part 51.

  After the design change is completed, the machining shell generation unit 18 generates the machining shell 60 corresponding to the unprocessed shell group 30 by performing a first instruction via the input device 6. As shown in FIG. 14, before the first instruction, only the corresponding raw shells 31 to 38 are superimposed on the parent parts 51 to 55, and each raw shell and the parent parts 51 to 55 are displayed. The set operation is not performed. When the first instruction is given, the machining shell generator 18 generates a machining shell group 60 corresponding to the unmachined shell group 30 as shown in FIG. As shown in FIG. 16, the machining shell group 60 includes machining shells 61 to 65 corresponding to the corresponding parent parts 51 ′ to 55 ′. For example, the processing shell 61 is generated by executing the processing method of the unprocessed shells 31 and 32 corresponding to the parent part 51 from the processing method DB 17 according to the first instruction.

  Next, a set operation of the machining shell group 60 and each of the parent parts 51 to 55 is performed according to the second instruction to generate parent parts 51 ′ to 55 ′ from which parts to which the child parts 41 to 43 are attached are removed. For example, the parent part 51 ′ is generated by performing a set operation of the machining shell 61 and the parent part 51 according to the second instruction. The mode displayed on the monitor 3 can be selected as appropriate. As shown in FIG. 15, the parent parts 51 ′ to 55 ′ and the machining shell group 60 are integrally displayed, and as shown in FIG. 16, machining shells 61 to 65 corresponding to the respective parent parts 51 ′ to 55 ′ are displayed. It may be displayed.

  Thus, since the raw shell having only shape data before the first instruction is displayed on the monitor 3 in correspondence with the parent part, the shape to be machined can be recognized without performing a set operation. In addition, since the displayed shell unit is displayed integrally with each raw shell and component shell, it is possible to easily cope with the design change of the shape change of the parent part and the change of the arrangement of the child parts. . In addition, by selecting a specific child component or shell unit, the entire shell unit can be moved and the design can be quickly changed.

Finally, the possibility of other embodiments according to the present invention will be mentioned.
In the said embodiment, the example which attaches a child component via the hole of a parent component was demonstrated. However, for example, a plate-like part may be used as the child part in addition to the part attached through the hole of the parent part. In such a case, the shell unit is generated based on the component shell basic data of the plate-like child component, and by setting a plurality of shell units that are set to provide holes in the parent component and the plate-like child component, these are set. It is good also as an integral shell unit. Thereby, it can be set as the nesting structure which has a shell unit in the shell unit, and it becomes possible to change a design by interlocking related parts integrally.

  In the above embodiment, the structure of the component unit DB storing raw shell basic data and component basic data is stored for each type, part, and nominal diameter. However, the classification as described above is only an example, and it may be stored in various modes and classifications depending on the shape of the parent part and the type and quantity of the raw shell basic data and part basic data to be stored. It is not limited.

  In the above embodiment, the parent part is a plate-like plate, and the mold design is described as an example. However, the plate is merely an example of a parent part, and the shape of the parent part is not limited to a plate shape. Further, the present invention is not limited to the design of the mold, and various modifications such as the structure of the database and the structure of the data can be made according to the design object.

  In the above embodiment, the raw shell basic data and the component shell basic data are extracted from the component unit DB, and a shell unit ID is assigned to generate a shell unit. However, it is not limited to the case of extracting from the database, and it is only necessary to have at least a pointer to the component unit DB.

  In the above embodiment, the parent part is generated by inputting parameters such as the dimension and interval of the parent part via the input device. However, in addition to inputting parameters, for example, the shape of the parent part may be stored in advance as solid data, and the parent part may be generated with reference to the solid data.

  In the above embodiment, the present invention is implemented as a three-dimensional CAD system, but may be implemented as a two-dimensional CAD system.

  In the above-described embodiment, the system according to the present invention is realized by a single computer. However, the present system can be configured by a network via a plurality of computers. The distinction between the parent parts is not limited to the change in the color display, but can be dealt with by changing the surface pattern, such as a change in hatching, as long as the parent part can be distinguished. Similarly, the unprocessed shell and the component shell constituting the shell unit may be distinguishable by color display, hatching, surface pattern, and the like.

  In the above embodiment, the machining shell is generated by the first instruction, and the set operation of the machining shell and the parent part is performed by the second instruction. However, the first instruction and the second instruction may be instructed at the same time without being separated.

  The present invention can be used as a CAD system and a CAD / CAM system. Further, the present invention can be implemented as a three-dimensional CAD system in addition to a two-dimensional CAD. In particular, if a three-dimensional display is used, shape recognition is easy.

It is a schematic diagram explaining the structure of a shell unit. It is a figure which shows the relationship of each data of an unprocessed shell, a component shell, and a parent component. It is a schematic diagram which shows the structure of component unit DB. It is a schematic diagram which shows the structure of parent component attribute DB. It is a hardware block diagram of the CAD system which concerns on this invention. It is a software block diagram of the CAD system which concerns on this invention. It is a flowchart which shows a use procedure. It is a figure which shows an example of a parent component creation window. It is a figure which shows an example of a subcomponent selection window. It is a figure which shows an example of the produced parent component. It is a perspective view which shows an example which has arrange | positioned the shell unit. It is a perspective view which shows an example of a shell unit, (a) is the state before a movement, (b) shows the state after a movement. It is a figure which shows an example of a shell unit, (a) is a perspective view before thickness change, (b) is a front view of (a), (c) is a perspective view after thickness change, (d) is ( It is a front view of c). It is a schematic diagram which shows the parent component, the unprocessed shell, and component shell before a process instruction | indication. It is a mimetic diagram showing a parent part after processing directions, a processing shell, and a parts shell. FIG. 16 is an exploded view of FIG. 15 for explaining the relationship between a parent part, a processing shell, and a part shell.

Explanation of symbols

1: CAD system, 2: bus, 3: monitor, 4: processing device, 4a: CPU, 4b: memory, 6: input device, 6a: keyboard, 6b: mouse, 6c: digitizer, 7a, 7b: network adapter, 8: NC device, 10: Software, 11: Display control unit, 12: Input control unit, 13: Shell unit generation unit, 14: Component unit database, 15: Parent component generation unit, 16: Parent component attribute database, 17 : Machining method database, 18: machining shell generator, 20, 20a, 20b, 20b ': shell unit, 30: unprocessed shell group, 31-36: first to sixth unprocessed shells, 40: component shell group, 41 to 43: first to third part shells (child parts), 51 to 55: first to fifth parent parts (plates), 56: plate thickness changing unit, 60: processing shell group, 6 ˜65: first to fifth parent parts (plate), 71 to 75: first to fifth processing shells, 110: first classification group (part group), 111 to 11N: first classification (part), 120: Second classification group (type group), 121 to 12 Nz: Second classification (type), 130: Third classification group (nominal diameter group), 131 to 13 Nz: Third classification (nominal diameter), 161 to 16 N: Parent part Attribute, 161a to 16Na: Attribute name, 161b to 16Nb: Identifier, 161c to 16Nc: Direction, 171 to 17N: Processing method, 200: Shell unit ID, 300, 301 to 30N: Raw shell basic data, 301a to 30Na: Processing shape, 301b-30Nb: processing depth, 301c-30Nc: processing direction, 301d-30Nd: processing method, 301e-30Ne: placement destination parent part, 400, 401-4 N: parts shell basic data, 401a to 40Na: part shape, 401b to 40Nb: catalog, 401c to 40Nc: direction, 401d to 40Nd: base point / origin information, 401e to 40Ne: placement destination parent part, 501 to 504: first To fourth parent part data (plate data), 501a to 504a: parent part attribute, 501b to 504b: material, 501c to 504c: comment, 600: parent part creation window, 601: parent part name display section, 602: parent part Attribute display part, 610: Parameter input part, 611 to 616: First to sixth input part, 621: File read button, 622: Save button, 623: Insert line button, 624: Delete line button, 625: Confirm button, 700: child part selection window, 701: first classification selection section, 702: second classification selection section, 70 3: Third classification selection unit, 704: File selection button, 705: Confirm button

Claims (7)

A processing device, a monitor for displaying an image, and an input device, the processing device including a shell unit generation unit, a parent component generation unit, a component unit database, and a parent component attribute database; The part unit database includes part shell basic data of a child part attached to the parent part and raw shell basic data of a portion removed by processing in the parent part, and the parent part attribute database includes attributes of the parent part, The parent part generation unit creates a parent part having the attribute selected from the parent part attribute database via the input device, selects the child part from the part unit database via the input device, and selects the child part from the parent part attribute database. By instructing the placement position of the part, the shell unit generation unit causes the part shell basic data and raw A shell and / or a raw shell are generated for a parent part having a corresponding attribute based on the basic data, and a shell unit is generated by associating the part shell and the raw shell, and the shell unit is superimposed on the parent part. CAD system displayed on the monitor. The CAD system according to claim 1, wherein the parent part generation unit generates a plurality of the parent parts, and the shell unit generation unit generates a shell unit continuous with the plurality of parent parts. The CAD system according to claim 1, wherein the shell unit is interlocked with the associated part shell and raw shell. The CAD system according to claim 1, wherein the shell unit can be interlocked with the parent part. The CAD system according to claim 1, wherein the shell unit generation unit can generate a plurality of shell units in association with each other, and the plurality of shell units can be linked to each other. A computer program for executing the CAD system according to claim 1. A recording medium on which a computer program for executing the CAD system according to claim 1 is recorded.

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