CN101398899B - System and method for auto- recognizing metal plate part edge type - Google Patents
System and method for auto- recognizing metal plate part edge type Download PDFInfo
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- CN101398899B CN101398899B CN2007102018601A CN200710201860A CN101398899B CN 101398899 B CN101398899 B CN 101398899B CN 2007102018601 A CN2007102018601 A CN 2007102018601A CN 200710201860 A CN200710201860 A CN 200710201860A CN 101398899 B CN101398899 B CN 101398899B
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Abstract
The invention discloses a system and a method for automatically identifying the category of a sheet metal part side. The method includes the following steps: one pointed side of the graph of the sheet metal part is selected; two neighboring surfaces of the pointed side are obtained; if one neighboring surface of the pointed side is arranged on a base level, then the pointed side is identified to be the side of the base level; if one neighboring surface of the pointed side is arranged on a deviation surface, then the pointed side is identified to be the side of the deviation surface; if the two neighboring surfaces of the pointed side are on a side surface, then the pointed side is identified to be the side of the side surface. The invention can be used for automatically identifying the category of the sheet metal part side and improving the design speed of a product.
Description
Technical field
The present invention relates to a kind of system and method for automatic identification metal plate part edge type.
Background technology
Utilizing mould design software Pro/Engineer to carry out in the secondary development, the visit of sheet metal part generally be by face to the profile of face again to the limit of profile, or arrive the limit of face again to the face of feature by feature (promptly creating the method for three-dimensional part).Body is that face is formed, no special rule can be sayed between face and the face, and the visit on opposite often need be by the limit relevant with face with identification, frequent opposite of meeting and limit conduct interviews in the actual exploitation, therefore with regard to being necessary some analytic induction arrangements are carried out on the limit of part, made it to form the identical limit of some characteristics.To realize the rapid and precise geometric properties body that obtains some same alike results in the exploitation.
Sheet metal part is different from general part, and the wall thickness of sheet metal part is that a changeless definite value material is thick, is the plane that is called basal plane by, with the green sign, also cries green.Thickness of green skew promptly obtains sheet metal part, and described off-set value is that the material of sheet metal part is thick.The face that obtains after green skew is an offset plane, indicates with white, also is fine flour, and the face between fine flour and green is the side., a limit, it is to be positioned at any, belongs to what type, generally all needs manually to go to judge, is very big workload to the developer like this, and makes mistakes easily, seems particularly important so discern the type on sheet metal part limit automatically.
Summary of the invention
In view of above content, be necessary to provide a kind of system of automatic identification metal plate part edge type, it can discern the type on sheet metal part limit automatically.
In view of above content, also be necessary to provide a kind of method of automatic identification metal plate part edge type, it can discern the type on sheet metal part limit automatically.
A kind of system of automatic identification metal plate part edge type, comprise main frame, described main frame comprises the mould design cell, be used to generate sheet-metal part figure and set up the sheet-metal part figure database, described sheet-metal part figure database is used to store the attribute of described sheet-metal part figure and sheet-metal part figure, the attribute of described sheet-metal part figure comprises limit and every face that the limit is adjacent that sheet-metal part figure comprises, described main frame also includes automatic identification unit, this automatic identification unit comprises: the adjacent surface acquisition module, be used for after the user selects one of sheet-metal part figure to specify the limit, obtaining two adjacent surfaces on described appointment limit; Basal plane limit identification module, be used for two adjacent surfaces when described appointment limit all on basal plane the time, discerning described appointment limit is the basal plane inner edge, and an adjacent surface is at basal plane in two adjacent surfaces on described appointment limit, the another one adjacent surface is when the side, and discerning described appointment limit is the basal plane marginal edge; Offset plane limit identification module, be used for two adjacent surfaces when described appointment limit all on offset plane the time, discerning described appointment limit is the offset plane inner edge, an adjacent surface is in offset plane in two adjacent surfaces on described appointment limit, the another one adjacent surface is when the side, and discerning described appointment limit is the offset plane marginal edge; Limit, side identification module when being used for two adjacent surfaces when described appointment limit all in the side, judges that described appointment limit is the limit, side.
A kind of method of automatic identification metal plate part edge type comprises the steps: to select one of sheet-metal part figure and specifies the limit; Obtain two adjacent surfaces on described appointment limit; If two adjacent surfaces on described appointment limit are all on basal plane, then discerning described appointment limit is the basal plane inner edge, if an adjacent surface is at basal plane in two adjacent surfaces on described appointment limit, the another one adjacent surface is in the side, and then discerning described appointment limit is the basal plane marginal edge; If two adjacent surfaces on described appointment limit are all on offset plane, then discerning described appointment limit is the offset plane inner edge, if an adjacent surface is in offset plane in two adjacent surfaces on described appointment limit, the another one adjacent surface is when the side, and then discerning described appointment limit is the offset plane marginal edge; If all on the side, then discern described appointment limit is the limit, side to two adjacent surfaces on described appointment limit.
Compared to prior art, the system and method for described automatic identification metal plate part edge type can be discerned the type on sheet metal part limit automatically, has improved the speed of product design.
Description of drawings
Fig. 1 is the system architecture diagram that the present invention discerns system's preferred embodiment of metal plate part edge type automatically.
Fig. 2 is the process flow diagram that the present invention discerns the method preferred embodiment of metal plate part edge type automatically.
Embodiment
As shown in Figure 1, be the system architecture diagram that the present invention discerns system's preferred embodiment of metal plate part edge type automatically.This system mainly comprises display 1, main frame 2, keyboard 3 and mouse 4, and described main frame 2 includes mould design cell 20 and automatic identification unit 21.Wherein, mould design cell 20 is automatic design softwares of a kind of mould (as Pro/Engineer), is used for generating various sheet-metal part figure in the mould design.Described mould design cell 20 comprises a graphic data base 30, and described graphic data base 30 is used to store the sheet-metal part figure of mould design cell 20 generations and the attribute of each sheet-metal part figure.The attribute of described sheet-metal part figure comprises limit that sheet-metal part figure comprises, the face adjacent with every limit etc.All there is oneself a sign on each face and every limit, can uniquely determine a face and a limit by this sign.Automatic identification unit 21 is used for discerning automatically the type on sheet metal part limit, and the type on described limit comprises basal plane inner edge, basal plane marginal edge, offset plane inner edge, offset plane marginal edge and limit, side etc.
Described main frame 2 is connected with display 1, is used to show the type on limit of the sheet metal part of figure that mould design cell 20 generates and automatic identification unit 21 identifications.Described keyboard 3 and mouse 4 can be imported data as input equipment when generating the limit of figure and selection sheet metal part.
Described automatic identification unit 21 comprises adjacent surface acquisition module 210, basal plane limit identification module 211, offset plane limit identification module 212 and limit, side identification module 213.The alleged module of the present invention is to finish the computer program code segments of a specific function, be more suitable in describing the implementation of software in computing machine than program, therefore below the present invention to all describing in the software description with module.
Described adjacent surface acquisition module 210 is used for obtaining two adjacent surfaces on described appointment limit after the user selects one of sheet-metal part figure to specify the limit.In described two adjacent surfaces, if one of them adjacent surface at basal plane, then the another one adjacent surface can only be in basal plane or side.If one of them adjacent surface is in offset plane, then the another one adjacent surface can only be in offset plane or side.
Described basal plane limit identification module 211 is used for when an adjacent surface on described appointment limit is positioned on the basal plane, and discerning described appointment limit is the basal plane limit, and described basal plane limit comprises basal plane inner edge and basal plane marginal edge.Particularly, if two adjacent surfaces on described appointment limit all on basal plane, then the described appointment of basal plane limit identification module 211 identifications limit is the basal plane inner edge.If an adjacent surface is at basal plane in two adjacent surfaces on described appointment limit, the another one adjacent surface is in the side, and then the described appointment of basal plane limit identification module 211 identifications limit is the basal plane marginal edge.
Described offset plane limit identification module 212 is used for when an adjacent surface on described appointment limit is positioned on the offset plane, and discerning described appointment limit is the offset plane limit, and described offset plane limit comprises offset plane inner edge and offset plane marginal edge.Particularly, if two adjacent surfaces on described appointment limit all on offset plane, then the described appointment of offset plane limit identification module 212 identifications limit is the offset plane inner edge.If an adjacent surface is in offset plane in two adjacent surfaces on described appointment limit, the another one adjacent surface is in the side, and then the described appointment of offset plane limit identification module 212 identifications limit is the offset plane marginal edge.
When limit, described side identification module 213 was used for two adjacent surfaces when described appointment limit all in the side, discerning described appointment limit was the limit, side.
As shown in Figure 2, be the process flow diagram that the present invention discerns the method preferred embodiment of metal plate part edge type automatically.At first, step S401, user select one of sheet-metal part figure to specify the limit.
Step S402, described adjacent surface acquisition module 210 obtain two adjacent surfaces on described appointment limit.In described two adjacent surfaces, if one of them adjacent surface at basal plane, then the another one adjacent surface can only be in basal plane or side.If one of them adjacent surface is in offset plane, then the another one adjacent surface can only be in offset plane or side.
Step S403, described basal plane limit identification module 211 judge that first adjacent surface in described two adjacent surfaces is whether on basal plane.
Step S404, described basal plane limit identification module 211 continue to judge that second adjacent surface in described two adjacent surfaces is whether on basal plane.
If described first adjacent surface and second adjacent surface all on basal plane, step S405, the described appointment of described basal plane limit identification module 211 identifications limit is the basal plane inner edge.
If described first adjacent surface is on basal plane, second adjacent surface be not in (on the side) on the basal plane, perhaps described first adjacent surface is not in (on the side) on the basal plane, second adjacent surface is on basal plane, step S406, the described appointment of described basal plane limit identification module 211 identifications limit is the basal plane marginal edge.
If described two adjacent surfaces are not on basal plane, whether step S407, first adjacent surface in described two adjacent surfaces of described offset plane limit identification module 212 identifications be on offset plane.
Step S408, described offset plane limit identification module 212 continue to judge that second adjacent surface is whether on offset plane.
If described first adjacent surface and second adjacent surface all on offset plane, step S409, the described appointment of described offset plane limit identification module 212 identifications limit is the offset plane inner edge.
If described first adjacent surface is on offset plane, second adjacent surface be not in (on the side) on the offset plane, perhaps described first adjacent surface is not in (on the side) on the offset plane, second adjacent surface is on offset plane, step S410, the described appointment of described offset plane limit identification module 212 identifications limit is the offset plane marginal edge.
If two adjacent surfaces on described appointment limit are all in the side, step S411, the described appointment of limit, described side identification module 213 identifications limit is the limit, side.
Claims (4)
1. automatic system of identification metal plate part edge type, comprise main frame, described main frame comprises the mould design cell, be used to generate sheet-metal part figure and set up the sheet-metal part figure database, described sheet-metal part figure database is used to store the attribute of described sheet-metal part figure and sheet-metal part figure, the attribute of described sheet-metal part figure comprises limit and every face that the limit is adjacent that sheet-metal part figure comprises, it is characterized in that, described main frame also includes automatic identification unit, and this automatic identification unit comprises:
The adjacent surface acquisition module is used for obtaining two adjacent surfaces on described appointment limit after the user selects one of sheet-metal part figure to specify the limit;
Basal plane limit identification module, be used for two adjacent surfaces when described appointment limit all on basal plane the time, discerning described appointment limit is the basal plane inner edge, and an adjacent surface is at basal plane in two adjacent surfaces on described appointment limit, the another one adjacent surface is when the side, and discerning described appointment limit is the basal plane marginal edge;
Offset plane limit identification module, be used for two adjacent surfaces when described appointment limit all on offset plane the time, discerning described appointment limit is the offset plane inner edge, an adjacent surface is in offset plane in two adjacent surfaces on described appointment limit, the another one adjacent surface is when the side, and discerning described appointment limit is the offset plane marginal edge; And
Limit, side identification module when being used for two adjacent surfaces when described appointment limit all in the side, judges that described appointment limit is the limit, side.
2. the system of automatic identification metal plate part edge type as claimed in claim 1, it is characterized in that, in two adjacent surfaces on described appointment limit, if one of them adjacent surface is at basal plane, then the another one adjacent surface is in basal plane or side, if one of them adjacent surface is in offset plane, then the another one adjacent surface is in offset plane or side.
3. a method of discerning metal plate part edge type automatically is characterized in that this method comprises the steps:
Select one of sheet-metal part figure to specify the limit;
Obtain two adjacent surfaces on described appointment limit;
If two adjacent surfaces on described appointment limit are all on basal plane, then discerning described appointment limit is the basal plane inner edge, if an adjacent surface is at basal plane in two adjacent surfaces on described appointment limit, the another one adjacent surface is in the side, and then discerning described appointment limit is the basal plane marginal edge;
If two adjacent surfaces on described appointment limit are all on offset plane, then discerning described appointment limit is the offset plane inner edge, if an adjacent surface is in offset plane in two adjacent surfaces on described appointment limit, the another one adjacent surface is when the side, and then discerning described appointment limit is the offset plane marginal edge; And
If all on the side, then discern described appointment limit is the limit, side to two adjacent surfaces on described appointment limit.
4. the method for automatic identification metal plate part edge type as claimed in claim 3, it is characterized in that, in two adjacent surfaces on described appointment limit, if one of them adjacent surface is at basal plane, then the another one adjacent surface is in basal plane or side, if one of them adjacent surface is in offset plane, then the another one adjacent surface is in offset plane or side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102018601A CN101398899B (en) | 2007-09-26 | 2007-09-26 | System and method for auto- recognizing metal plate part edge type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102018601A CN101398899B (en) | 2007-09-26 | 2007-09-26 | System and method for auto- recognizing metal plate part edge type |
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| Publication Number | Publication Date |
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| CN101398899A CN101398899A (en) | 2009-04-01 |
| CN101398899B true CN101398899B (en) | 2011-03-30 |
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| CN2007102018601A Expired - Fee Related CN101398899B (en) | 2007-09-26 | 2007-09-26 | System and method for auto- recognizing metal plate part edge type |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103793712B (en) * | 2014-02-19 | 2017-02-08 | 华中科技大学 | Image recognition method and system based on edge geometric features |
| CN110263426B (en) * | 2019-06-18 | 2020-12-04 | 珠海格力电器股份有限公司 | Medium surface extraction method and device of thin-wall structure model and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109189A (en) * | 1993-07-23 | 1995-09-27 | 松下电器产业株式会社 | Method for identification of edge |
| CN2475199Y (en) * | 2000-09-21 | 2002-01-30 | 交通部上海船舶运输科学研究所 | Frame and plate type metal plate box |
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2007
- 2007-09-26 CN CN2007102018601A patent/CN101398899B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109189A (en) * | 1993-07-23 | 1995-09-27 | 松下电器产业株式会社 | Method for identification of edge |
| CN2475199Y (en) * | 2000-09-21 | 2002-01-30 | 交通部上海船舶运输科学研究所 | Frame and plate type metal plate box |
Non-Patent Citations (1)
| Title |
|---|
| 杨兵论,陈艳华.电子钣金结构设计的工艺性.《舰船电子工程》.2001,(第4期), * |
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| CN101398899A (en) | 2009-04-01 |
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