CN102109337B - Sample making method - Google Patents
Sample making method Download PDFInfo
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- CN102109337B CN102109337B CN200910200591A CN200910200591A CN102109337B CN 102109337 B CN102109337 B CN 102109337B CN 200910200591 A CN200910200591 A CN 200910200591A CN 200910200591 A CN200910200591 A CN 200910200591A CN 102109337 B CN102109337 B CN 102109337B
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- edges
- end points
- those
- circular arc
- circular curve
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Abstract
The invention discloses a sample making method. The method comprises the following steps of: 1, determining vertexes of all straight line edges of a part, two end points of all circular arc edges of the part or a crossing point of tangential lines at the two end points or the center of a circle and the two end points of all non-circular arc curve edges of the part, and connecting the vertexes of the straight edges, the end points of the circular arc edges or the crossing point of the tangential lines at the end points or the center of the circle and the end points of the non-circular arc curve edges to form a plurality of triangles, wherein the triangles cover the surface of the part in a non-overlapping mode; 2, measuring the shapes and the sizes of the triangles; and 3, measuring the relative positions, relative to the triangles, of all the circular arc edges and the non-circular arc curve edges of the part and the shapes and the sizes of the circular arc edges and the non-circular arc curve edges. The sample making method can realize accurate sample making, and the sample making data can be stored as technical data for a long time.
Description
Technical field
The present invention relates to a kind of measuring method, particularly relate to a kind of quadrat method of refuting.
Background technology
The now used quadrat method of refuting generally is to directly overlay on the required part of refuting appearance through media (for example, various paper, thin plate or the like), adopts to open up the method for getting and obtain required part profile.Yet, adopt above-mentioned when refuting quadrat method, if the area of refuting kind media during less than the part of correspondence, just can't accurately be refuted and get the part profile; In addition, the part data of so refuting after getting can't long preservation, is difficult to use as the file technical information.
Summary of the invention
The technical matters that the present invention will solve is of the prior artly to refute that the quadrat method limitation is big, precision is not high and refute the defective that kind data can't long preservation in order to overcome, and provides that a kind of can realize accurately refuting appearance and refute kind data can be as the quadrat method of refuting of technical information long preservation.
The present invention solves above-mentioned technical matters through following technical proposals: a kind of quadrat method of refuting, its characteristics are that it may further comprise the steps: S
1, confirm two end points at all non-circular curve edges of intersection point or the center of circle, this part of two end points or two end points place tangent lines of all arc edges of summit, this part of all linear edges of a part; Intersection point or the center of circle, the end points at those non-circular curve edges of end points or end points place tangent line that connects summit, those arc edges of those linear edges; To form a plurality of triangles, those triangle non-overlapping copies ground cover the surface of this part; S
2, measure those leg-of-mutton geomeries; S
3, measure all arc edges and the non-circular curve edge of this part geomery with respect to those leg-of-mutton relative positions and those arc edges and non-circular curve edge.
Wherein, at step S
3In, measure the home position of those arc edges and the radius of those arc edges, and measure the sagitta of the curve peak at those non-circular curve edges with respect to position and those non-circular curve edges of its two end points lines.
Positive progressive effect of the present invention is: this is refuted quadrat method and can help enterprise to improve the mode of production; Manual mode of refuting appearance, blanking is combined with the advanced numerical control mode of production; When improving the quality of products, also can make discharge get into operation and realize sequencing production; In addition, under the support of refuting kind data that obtains through the present invention, make scope bigger renew the preview that engineering also can be carried out technological effect and mode of production feasibility; In addition, can the long preservation part data through kind data of refuting that the present invention obtains, for carrying out analysis of Production Technology, mode of production research later on the data and the material of proficiency are provided.
Description of drawings
Fig. 1 is a synoptic diagram of refuting the embodiment 1 of quadrat method of the present invention.
Fig. 2 is a synoptic diagram of refuting the embodiment 2 of quadrat method of the present invention.
Fig. 3 is a synoptic diagram of refuting the embodiment 3 of quadrat method of the present invention.
Embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to specify technical scheme of the present invention.
The present invention relates in industry repair, the manufacture process profile of various extensible parts refuted appearance.A certain linear edge with part is a benchmark earlier; On part, mark off several interconnective triangles; Encoded in all leg-of-mutton each limits; Skeletonizing also will be encoded and the length of side is recorded on the sketch, maybe will encode and the length of side is recorded in the form, simultaneously corresponding record carried out in the curvature and the position of the curved edge of part.
The quadrat method of refuting of the present invention may further comprise the steps:
Step 3, all arc edges and the non-circular curve edge of measuring this part be with respect to those leg-of-mutton relative position and geomery thereof, and be recorded on sketch or the tables of data.Particularly; For the arc edge to part is accurately refuted appearance; Measure and write down the home position and the radius (like center of circle O1 and the radius R 1 of the arc edge C1 among the following embodiment 1) thereof of those arc edges; And, then need position and the sagitta (like curve peak projected position P1 and the sagitta h on line g of non-circular curve edge C 2 in following embodiment 1) thereof of their curve peak of survey record with respect to its two end points lines to non-circular curve edge.
Thus, just can in media or computer, make blanking model or blanking program according to data recorded on sketch or the data logger.Preferably, refute a kind efficient in order to improve further, for the part of appearance similar, institute's leg-of-mutton layout of dividing should be identical, and work out record sheet by identical rule and carry out record.
According to the different disposal mode to the arc edge of part, the present invention can select different tessellation modes, and is specifically of following examples.
In embodiment as shown in Figure 11, those leg-of-mutton partition process specifically comprise:
1) a certain linear edge of intercepting part is with this article one limit a as first triangle 1.
2) on this basis with one section on the one edge adjacent of part second limit b as first triangle 1 with limit a.
3), thereby constitute first triangle 1 with the line of disjoint two-end-point of both sides a, b the 3rd limit c as first triangle 1.
4) be benchmark with first triangle 1, divide the triangle that links to each other successively to other each linear edge and the curved edge of part gradually, all cover until the surface of those triangle non-overlapping copies ground with part.For example; As shown in Figure 1; Second triangle 2 and first triangle 1 common edge c; It then is not chosen as the center of circle O1 of arc edge C1 with first triangle 1 shared summit, the 3rd triangle 3 and second triangle 2 common edge e, and it is not chosen as the line g of two end points of non-circular curve edge C 2 with the shared wherein limit of second triangle 2; Or the like.
In embodiment as shown in Figure 22, those leg-of-mutton partition process specifically comprise:
1) a certain linear edge of intercepting part is with this article one limit a ' as first triangle 1 '.
2) to arc edge C3; The intersection point P2 of tangent line (being the extended line of the linear edge that links to each other with the two ends of arc edge C3 on the part) that gets its two end points places constitutes two limit b ' of this leg-of-mutton residue and c ' thus as a summit of first triangle 1 '.
3) be benchmark with first triangle 1 ', continue second triangle 2 ' of structure and the 3rd triangle 3 ' or the like.Wherein, a summit of second triangle 2 ' is chosen as the center of circle O1 of arc edge C1, and a limit of the 3rd triangle 3 ' is chosen as the extended line f ' of the linear edge that links to each other with the end of arc edge C3.
Embodiment shown in Figure 33 is for carrying out the local of round platform class part or all cut when changing, and adopts tessellation synoptic diagram of refuting after the quadrat method of the present invention.
In sum, this is refuted quadrat method and can help enterprise to improve the mode of production, and manual mode of refuting appearance, blanking is combined with the advanced numerical control mode of production; In addition, can the long preservation part data through kind data of refuting that the present invention obtains, for carrying out analysis of Production Technology, mode of production research later on the data and the material of proficiency are provided.
Though more than described embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is limited appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite that does not deviate from principle of the present invention and essence, but these changes and modification all fall into protection scope of the present invention.
Claims (2)
1. refute quadrat method for one kind, it is characterized in that it may further comprise the steps:
S
1, confirm two end points at all non-circular curve edges of intersection point or the center of circle, this part of two end points or two end points place tangent lines of all arc edges of summit, this part of all linear edges of a part; Intersection point or the center of circle, the end points at those non-circular curve edges of end points or end points place tangent line that connects summit, those arc edges of those linear edges; To form a plurality of triangles, those triangle non-overlapping copies ground cover the surface of this part;
S
2, measure those leg-of-mutton geomeries;
S
3, measure all arc edges and the non-circular curve edge of this part geomery with respect to those leg-of-mutton relative positions and those arc edges and non-circular curve edge.
2. the quadrat method of refuting as claimed in claim 1 is characterized in that, at step S
3In, measure the home position of those arc edges and the radius of those arc edges, and measure the sagitta of the curve peak at those non-circular curve edges with respect to position and those non-circular curve edges of its two end points lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910200591A CN102109337B (en) | 2009-12-23 | 2009-12-23 | Sample making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910200591A CN102109337B (en) | 2009-12-23 | 2009-12-23 | Sample making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102109337A CN102109337A (en) | 2011-06-29 |
| CN102109337B true CN102109337B (en) | 2012-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910200591A Expired - Fee Related CN102109337B (en) | 2009-12-23 | 2009-12-23 | Sample making method |
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| CN (1) | CN102109337B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105528472A (en) * | 2015-11-27 | 2016-04-27 | 沈阳飞机工业（集团）有限公司 | A coinciding line removing method for aircraft template laser cutting programming graphics |
| CN111445506B (en) * | 2020-03-04 | 2023-06-06 | 浙江理工大学 | Method for reconstructing wave skirt point cloud and flattening curved surface segmentation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7257250B2 (en) * | 2003-10-29 | 2007-08-14 | International Business Machines Corporation | System, method, and program product for extracting a multiresolution quadrilateral-based subdivision surface representation from an arbitrary two-manifold polygon mesh |
-
2009
- 2009-12-23 CN CN200910200591A patent/CN102109337B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7257250B2 (en) * | 2003-10-29 | 2007-08-14 | International Business Machines Corporation | System, method, and program product for extracting a multiresolution quadrilateral-based subdivision surface representation from an arbitrary two-manifold polygon mesh |
Non-Patent Citations (5)
| Title |
|---|
| JP特开2003-271684A 2003.09.26 |
| 刘伟军等.逆向工程——原理、方法及应用.《逆向工程——原理、方法及应用》.机械工业出版社,2009,第65-72页. * |
| 李奇敏等.基于几何图像的三角网格分割.《机械工程学报》.2008,第44卷(第5期),第208-214页. * |
| 胡事民等.数字几何处理研究进展.《计算机学报》.2009,第32卷(第8期),第1451-1469页. * |
| 阎树田等.三维测量数据的一种三角网格精简方法的研究.《兰州理工大学学报》.2007,第33卷(第1期),第40-43页. * |
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| CN102109337A (en) | 2011-06-29 |
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