WO2006033192A1 - 3次元cadシステム - Google Patents
3次元cadシステム Download PDFInfo
- Publication number
- WO2006033192A1 WO2006033192A1 PCT/JP2005/011365 JP2005011365W WO2006033192A1 WO 2006033192 A1 WO2006033192 A1 WO 2006033192A1 JP 2005011365 W JP2005011365 W JP 2005011365W WO 2006033192 A1 WO2006033192 A1 WO 2006033192A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shape
- assembly
- dimensional
- common
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating three-dimensional [3D] models or images for computer graphics
- G06T19/20—Editing of three-dimensional [3D] images, e.g. changing shapes or colours, aligning objects or positioning parts
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2219/00—Indexing scheme for manipulating 3D models or images for computer graphics
- G06T2219/20—Indexing scheme for editing of 3D models
- G06T2219/2008—Assembling, disassembling
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2219/00—Indexing scheme for manipulating 3D models or images for computer graphics
- G06T2219/20—Indexing scheme for editing of 3D models
- G06T2219/2021—Shape modification
Definitions
- the present invention relates to a 3D CAD system, and more particularly to a 3D CAD system suitable for creating a 2D drawing based on 3D shape information of a model.
- a system having a function of creating a two-dimensional drawing by projecting the shape of the created model cover is known.
- This type of 3D CAD system uses a product model that represents a combination of a component model that represents a component and a component model.
- a part model defines a state before being incorporated into a product
- a product model generally defines a state after assembling parts
- a component part is defined in a hierarchical structure.
- this part when there is a part in the product that changes its shape when it is a single part or when it is assembled, for example, when there is a part that is subjected to caulking, etc., this part is shaped when incorporated into the product. Therefore, as a model related to this part, a part model that represents the shape after the part is incorporated into the product is required in addition to the part model that represents the form before the part is thinned into the product.
- product A is also composed of parts B, C, D, and E forces, and when part B changes its shape before and after assembly, the model of part B is used as the part model.
- 1.Model 2 before assembly of part C, model 3 after assembly of part C, model 4 of part D, model 5 of part E are provided. 4 is displayed, and model 3 after assembly of part C is not displayed.
- models 1, 3, 4, and 5 are displayed, and model 2 before assembly of part C is not displayed.
- An object of the present invention is to ensure consistency between a part model and a two-dimensional drawing. Disclosure of the invention
- the present invention generates a two-dimensional drawing based on a three-dimensional model using a computer resource including a processing device resource, a memory resource, an input device, and an interface.
- the processing unit resource is a three-dimensional shape information of a part model having a shape changing element whose shape changes before and after assembly and other common elements, and before the shape changing element is set up.
- the shape that holds the 3D information about the shape after erection and the shape of the common element, and the constraint that the shape change element and the shape of the common element become one part between the shape before the assembly and the shape of the common element A step of setting a condition, a shape of the shape changing element after standing, and a shape of the common element
- the processing of the memory resource includes a step of setting a constraint condition that becomes one part between each and a step of expanding the held three-dimensional shape information into a two-dimensional drawing according to each constraint condition. It adopts a two-dimensional drawing generation method characterized by being executed based on a program.
- the present invention provides, as three-dimensional shape information of a part model having a shape change element whose shape changes before and after standing and other common elements, before the shape change element is assembled.
- a constraining condition that forms a single part between the shape of the shape and the shape of the common element and a database that holds three-dimensional information about the shape of the common element and the shape before the assembly of the shape change element and the shape of the common element.
- a constraint condition is set between the shape after the assembly of the shape change element and the shape of the common element, and the 3D shape information held in the database is converted into a 2D diagram according to each constraint condition.
- This is a 3D CAD system that is equipped with a computing unit that develops on the surface.
- the shape before and after assembly is defined by one part model, so that the consistency between the part model and the two-dimensional drawing can be obtained, and file management is easy. Can be done.
- a display unit that displays the two-dimensional drawing on a screen is provided, and the calculation unit determines before and after assembling with respect to the component model, and before assembling, the shape of the shape changing element after assembling is determined.
- the shape of the shape change element before standing and the shape of the common element are displayed on the display screen, and after standing, the shape change element before standing.
- the shape of the shape change element and the shape of the common element are displayed on the display screen.
- the present invention relates to a program for causing a computer to execute the processes realized as the respective means, and a storage medium storing the program.
- the storage medium include memory means such as CD-ROM and DVD-ROM.
- FIG. 1 is a block configuration diagram of a three-dimensional CAD system showing an embodiment of the present invention.
- FIG. 2 is a configuration explanatory diagram of a part model.
- FIG. 3 is another configuration explanatory diagram of a part model.
- FIG. 4 is a flowchart for explaining a display method before and after assembling a part model.
- FIG. 5 is a configuration diagram for explaining a relationship between a product model and a part model.
- FIG. 6 is a configuration diagram for explaining the relationship between a product model and a part model when the shape before and after assembly is a subassembly.
- FIG. 7 is a diagram for explaining the shape of the rivet 40 when it is expanded into a two-dimensional drawing.
- FIG. 8 A diagram for explaining the shape when the oil seal 50 is developed in a two-dimensional drawing.
- FIG. 9 A diagram for explaining the configuration of a conventional part model, in which (a) FIG. 5B is a diagram for explaining a part model without display Z before assembly, and FIG. 6B is a diagram for explaining a component model without display Z after assembly.
- FIG. 10 is a diagram for explaining a conventional method for managing a part model, and a diagram for explaining a method for separately managing models before and after assembly.
- Figure 1 shows one aspect of the present invention. It is a block block diagram of the three-dimensional CAD system which shows an Example.
- a 3D CAD system includes an input unit (input device) 10, a database (memory resource) 12, a calculation unit (processing device resource and interface) 14, and a display unit (display device) 1 6 It consists of a computer with
- the input unit 10 is configured as an input means for inputting various data relating to the part model, product model, etc. to the calculation unit 14!
- the calculation unit 14 stores the data input by the input unit 10 in the database 12, performs various calculations based on the input data and the operation program, sets constraint conditions, etc., and calculates calculation results and constraint Data such as conditions are stored in the database 12, and the data stored in the database 12 as 3D shape information is expanded into 2D drawings according to various constraints, and the expanded 2D drawings are displayed. It is displayed on the screen of part 16. Further, the calculation unit 14 determines whether the product is before or after assembly, and the model shape is hidden or displayed according to the determination result.
- the computing unit 14 determines whether there is a part whose shape changes before and after assembly. As shown in Fig. 2, the shape change element is divided into the shape change element whose shape changes and other common elements, and the data related to the three-dimensional shape information of the part model 18 that has the shape change element and the common element. 3) Shape data before assembly, shape 22 after assembly of shape change elements, and shape of common elements and common shapes before and after standing) 24) These three-dimensional shape data are stored in the database 12 and stored in the database 12. In this case, when the computing unit 14 stores the three-dimensional shape data on the shape 20 before the assembly of the shape change element, the shape after the assembly, and the shape 24 of the common element in the database 12, the constraint condition 26 for each shape is obtained. Set as follows.
- a constraint condition 26 is set between the shape 20 before assembly of the shape change element and the shape 24 of the common element.
- the constraint condition 26 that becomes one part of each other is set between the shape 24 and the shape. That is, the coordinate system related to elements in the part model 18 and elements other than the part model 18, The position is constrained by attaching, matching, dimensions, etc. to a flat surface.
- the shape change element shape 20 before assembly and the shape shape 22 after assembly are sub-assemblies, as shown in Fig. 3.
- (Shape of common element) Set constraint condition 28 between 24 and pre-assembly shape 20 to form one part, and shape change element 22 after assembly and common shape before and after assembly (common element shape) ) It is possible to set a constraint condition 28 that becomes one part between 24.
- the calculation unit 14 determines whether it is before or after assembly, and the shape is not displayed or displayed according to the determination result. For example, when a constraint condition is set for an element that does not exist in the part model 18, it is determined that the assembly is performed, and when a constraint condition is not set for an element that does not exist in the part model 18, It is decided that Even if a constraint condition is set for an element that does not exist in the part model 18, even if there is an element that does not exist in the part model 18, it is determined that it is after assembly. Monkey.
- Step S1 it is determined whether or not there is a constraint (a constraint condition is set) between an element in the part model 18 and an element outside the part model 18.
- Step S2 when there is no constraint, it is determined whether or not there is an element other than the part model 18 element (Step S2).
- the shape 24 common to the shape 20 before and after assembly is displayed, and the shape 22 after assembly is not displayed (step S3).
- step S1 it is determined in step S1 that there is a constraint, or if it is determined in step S2 that there is an element other than the part model 18 element, it is determined after assembly, and the shape 22 after assembly and before and after assembly are determined.
- product A is also made up of parts B, C, D, and E forces, making it the same!
- the model B for the part B, the model 34 for the part C, the part 34 as the part model for the product model 30 D model 36 and part E model 38 are generated and assembled before assembly.
- the previous shape 34a and the common shape 34c before and after assembly are displayed, the shape 34b after assembly is not displayed, and after assembly, the shape 34a before assembly is not displayed and the shape 34b after assembly and before and after assembly
- Each common shape 34c is displayed.
- the pre-assembly shape 34a is displayed before assembly, and the common shape 34c is displayed before and after assembly, and the post-assembly shape 34b is not displayed.
- the pre-assembly shape 34a is not displayed after assembly, and the post-assembly shape 34b and the common shape 34c before and after assembly are displayed.
- the rivet 40 changes its shape before and after assembly due to caulking, the rivet 40 is divided into a shape-changing element 42 whose shape changes before and after assembly and other common elements 44 and 46. .
- the shape-changing element 42 is displayed as a leg before assembly
- the common element 44 is displayed as a leg before assembly
- the common element 46 is displayed as a head before assembly.
- the shape change element 42 is changed to the shape change element 48 after assembly
- the shape change element 48 is displayed as a head after assembly
- the common element 44 is also displayed as a leg portion after assembly. Element 46 is still displayed as the head after assembly.
- the oil seal 50 when the oil seal 50 is developed in a two-dimensional drawing, the oil seal 50 is divided into a shape changing element 52 whose shape changes before and after assembly and a common element 54 other than that. Therefore, before the assembly, the shape change element 52 is displayed and the common element 54 is displayed. On the other hand, since the shape changing element 52 is changed to the shape changing element 56 after the yarn is erected, the shape changing element 56 and the common element 54 are displayed.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Geometry (AREA)
- Software Systems (AREA)
- Computer Graphics (AREA)
- Architecture (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Evolutionary Computation (AREA)
- Processing Or Creating Images (AREA)
- Numerical Control (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0622369A GB2430855B (en) | 2004-09-22 | 2005-06-21 | 3-Dimensional cad system |
| DE112005001184T DE112005001184T5 (de) | 2004-09-22 | 2005-06-21 | Dreidimensionales CAD-System |
| US10/594,079 US20070182733A1 (en) | 2004-09-22 | 2005-06-21 | Three-dimensional cad system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-275268 | 2004-09-22 | ||
| JP2004275268A JP2006092144A (ja) | 2004-09-22 | 2004-09-22 | 3次元cadシステム |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006033192A1 true WO2006033192A1 (ja) | 2006-03-30 |
Family
ID=36089958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/011365 Ceased WO2006033192A1 (ja) | 2004-09-22 | 2005-06-21 | 3次元cadシステム |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20070182733A1 (ja) |
| JP (1) | JP2006092144A (ja) |
| CN (1) | CN100487708C (ja) |
| DE (1) | DE112005001184T5 (ja) |
| GB (1) | GB2430855B (ja) |
| WO (1) | WO2006033192A1 (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110334378A (zh) * | 2019-05-07 | 2019-10-15 | 北京洪泰智造信息技术有限公司 | 电子设备组装产品的在线辅助生成方法、系统和智能终端 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07200644A (ja) * | 1993-12-28 | 1995-08-04 | Fujitsu Ltd | 三次元モデル作成装置及び方法 |
| JP2000029922A (ja) * | 1998-07-14 | 2000-01-28 | Fujitsu Ltd | 装置における部品間の干渉を検証する干渉検証装置および方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2202659B (en) * | 1987-02-23 | 1991-07-17 | Mitutoyo Corp | Coordinate measuring instrument and method of generating pattern data concerning shape of work to be measured |
| US6766207B2 (en) * | 2000-08-25 | 2004-07-20 | Fujitsu Limited | Designing method, CAD apparatus and storage medium |
| JP2003177811A (ja) * | 2001-12-12 | 2003-06-27 | Toyota Motor Corp | 設計支援装置及び方法 |
| JP2003181842A (ja) * | 2001-12-14 | 2003-07-02 | Futaba Corp | 金型用部品設計支援方法、及び、そのシステム |
-
2004
- 2004-09-22 JP JP2004275268A patent/JP2006092144A/ja active Pending
-
2005
- 2005-06-21 CN CNB2005800319533A patent/CN100487708C/zh not_active Expired - Fee Related
- 2005-06-21 DE DE112005001184T patent/DE112005001184T5/de not_active Ceased
- 2005-06-21 GB GB0622369A patent/GB2430855B/en not_active Expired - Fee Related
- 2005-06-21 US US10/594,079 patent/US20070182733A1/en not_active Abandoned
- 2005-06-21 WO PCT/JP2005/011365 patent/WO2006033192A1/ja not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07200644A (ja) * | 1993-12-28 | 1995-08-04 | Fujitsu Ltd | 三次元モデル作成装置及び方法 |
| JP2000029922A (ja) * | 1998-07-14 | 2000-01-28 | Fujitsu Ltd | 装置における部品間の干渉を検証する干渉検証装置および方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101027673A (zh) | 2007-08-29 |
| GB2430855A (en) | 2007-04-04 |
| DE112005001184T5 (de) | 2007-03-29 |
| US20070182733A1 (en) | 2007-08-09 |
| GB2430855B (en) | 2010-08-04 |
| GB0622369D0 (en) | 2006-12-20 |
| JP2006092144A (ja) | 2006-04-06 |
| CN100487708C (zh) | 2009-05-13 |
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