壳体类零件CAD模型重用方法研究

范秋霞; 杨兆建

doi:10.13433/j.cnki.1003-8728.2015.0817

壳体类零件CAD模型重用方法研究

doi: 10.13433/j.cnki.1003-8728.2015.0817

1.
太原理工大学机械工程学院, 太原 030024

基金项目:

山西省科技重大专项项目（2010091014）与山西省科技基础条件平台建设项目（20111101040）资助

详细信息

作者简介:
范秋霞（1981-），讲师，博士研究生，研究方向为工程机械计算机辅助设计，现代设计方法，fanqiuxia0808@126.com

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- 文章访问数: 217
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- 被引次数: 0
出版历程
- 收稿日期: 2013-11-13
- 刊出日期: 2015-08-05

Research on Reuse Method of CAD Model for Shell Parts

1.
College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

摘要

摘要: 为解决机械壳体类零件CAD模型重用问题，分析此类零件模型的几何形状及结构关系特点，提出面向CAD模型重用的机械壳体类零件LOD模型构造方法。该方法通过面向凸边的广度优化搜索算法识别切割环，将模型分解成多个面壳，构造1EE或2EE面填充收缩分割环将面壳封闭为实体，将分解结果存储在构造实体几何树中，对树进行节点删除和简化，生成LOD模型。对采煤机部分零部件进行模型分解试验和LOD模型生成试验，表明该方法具有较高计算效率，验证了该方法能较好保持模型的结构特征。
- 模型重用 /
- CAD /
- 分解 /
- LOD模型 /
- 壳体类零件
Abstract: In order to solve the CAD model reuse problem of machinery shell parts, in this paper, a analysis on geometry and structure characteristic of shell parts is made, and a method of constructing level of detail of machinery shell parts oriented to CAD model reuse is put forward. Firstly, we recognize the cutting loops of model in mixed areas model according to the BFS of oriented to collar. Secondly, the model is decomposed into multiple face shells along edges in the cutting loops, and finally through the construction of a 1EE or 2EE surface filling, the face shells are transformed into solids with shrinking the cutting loops and the decomposition results were stored as nodes in a CSG tree. After node simplification and deletion, the CSG tree was generated into LOD model. The experimental results which contain decomposition and the LOD model generating verify the effectiveness and correctness.
- algorithms /
- computer aided design /
- decomposition /
- efficiency /
- geometry

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参考文献(15)

[1]	覃斌,阎春平,刘飞.面向CAD数据重用的产品B-rep模型建模方法[J].计算机集成制造系统,2011,17(11):2359-2365 Qin B, Yan C P, Liu F. Modeling method of B-rep Model oriented data reuse[J]. Computer Integrated Manufacture Systems, 2011,17(11):2359-2365 (in Chinese)
[2]	傅欢,梁力,王飞,等.采用局部凸性和八叉树的点云分割算法[J].西安交通大学学报,2012,46(10):60-65 Fu H, Liang L, Wang F, et al. Approach to point cloud segmentation using local convexity and octree[J]. Journal of Xi'an Jiaotong University, 2012,46(10):60-65 (in Chinese)
[3]	杜中义,肖春霞.基于保特征无参数投影的快速几何重建[J].计算机辅助设计与图形学学报,2010,22(7):1139-1144 Du Z Y, Xiao C X. Feature-preserving and parameterization-free projection for fast geometry reconstruction[J]. Journal of Computer-Aided Design & Computer Graphics, 2010,22(7):1139-1144 (in Chinese)
[4]	辛兰兰,贾秀杰,李方义,等.面向机电产品方案设计的绿色特征建模[J].计算机集成制造系统,2012,18(4):713-718 Xin L L, Jia X J, Li F Y, et al. Green feature modeling for mechanical and electrical product conceptual design[J]. Computer Integrated Manufacturing Systems, 2012,18(4):713-718 (in Chinese)
[5]	Huang Z D, Xie B, Ma L J, et al. Feature conversion based on decomposition and combination of swept volumes[J]. Computer-Aided Design, 2006,38(8):857-873
[6]	张开兴,张树生,李亮.基于蚁群算法的三维CAD模型检索[J].计算机辅助设计与图形学学报,2011,23(4):633-639 Zhang K X, Zhang S S, Li L. A method of 3D CAD model retrieval based on ant colony algorithm[J]. Journal of Computer-Aided Design & Computer Graphics, 2011,23(4):633-639 (in Chinese)
[7]	Buchele S F, Crawford R H. Three-dimensional halfspace constructive solid geometry tree construction from implicit boundary represent at ions[J]. Computer-Aided Design, 2004,36(11):1063-1073
[8]	Woo T C. Feature extraction by volume decomposition[C]// Proceedings of the Conference on CAD/ CAM, Cambridge, MA: MIT Press, 1982:39-45
[9]	Sakurai H. Volume decomposition and feature recognition, part I: Polyhedral objects[J]. Computer-Aided Design, 1995,27(11):833-843
[10]	Sakurai H, Dave P. Volume decomposition and feature recognition, part II: Curve objects[J]. Computer-Aided Design, 1996,28(6-7):519-537
[11]	Lu Y, Gadh R, Tautges T J. Feature based hex Meshing methodology: Feature recognition and volume decomposition[J]. Computer Aided Design, 2001,33(3):221-231
[12]	Gadh R, Prinz F B. Reduction of geometric form s using the differential depth filter[J].Computer Aided Design, 1992, 24(11): 583-598
[13]	Sonthi R, Kunjur G, Gadh R. Shape feature determination using the curvature region representation[C]//Proceedings of the 4th Symposium on Sol id Modeling and Applications, May 14-16,1997, Atlanta, Georgia, 1997: 285-296
[14]	Fu M W, Ong S K, Lu W F et al. An approach to identify design and manufacturing features from a data exchanged part model[J].Computer Aided Design, 2003, 35(11): 979-993
[15]	徐俊明.图论及其应用[M].合肥:中国科学技术大学出版社,2004 Xu J M. Graph theory and its applications[M]. Hefei: University of Science and Technology of China Press, 2004 (in Chinese)