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自适应细分曲面算法及在快速成型
引用本文:温佩芝,吴晓军,吴成柯,刘伟军.自适应细分曲面算法及在快速成型[J].计算机集成制造系统,2007,13(3):608-613,620.
作者姓名:温佩芝  吴晓军  吴成柯  刘伟军
作者单位:[1]桂林电子工业学院计算机系,广西桂林541004 [2]西安电子科技大学通信工程学院,陕西西安710071 [3]哈尔滨工业大学深圳研究生院自动控制与机电工程学科部,广东深圳518055 [4]中国科学院沈阳自动化研究所二室,辽宁沈阳110016
基金项目:国家高技术研究发展计划(863计划)
摘    要:为提高快速成型制造中STL模型切片轮廓的光滑性,提出了一种基于Loop模式的自适应曲面细分算法,首先分割出网格模型中的曲面和平面,对和尖锐边相邻的曲面三角面设计了特殊的细分规则.通过三角面顶点的平坦度和容差平坦度决定三角面是否做进一步细分,以达到自适应细分的目的.该算法在保留零件模型上尖锐特征的同时,提高了模型上曲面部分的光顺性,从而可以利用模型的全局信息获得光滑的2维切片数据.

关 键 词:Loop细分曲面  自适细分应曲面  模型切片  快速成型制造  自适应细分  细分曲面  曲面细分算法  快速成型制造  data  processing  application  subdivision  切片数据  信息获得  利用模型  光顺性  尖锐特征  零件模型  容差  平坦度  三角面  细分规则  面设计  平面  网格模型
文章编号:1006-5911(2007)03-0608-06
收稿时间:2006-01-13
修稿时间:2006-01-132006-03-20

Self-adaptive surface subdivision and its application in data processing of RPM
WEN Pei-Zhi,WU Xiao-Jun,WU Cheng-Ke,LIU Wei-Jun.Self-adaptive surface subdivision and its application in data processing of RPM[J].Computer Integrated Manufacturing Systems,2007,13(3):608-613,620.
Authors:WEN Pei-Zhi  WU Xiao-Jun  WU Cheng-Ke  LIU Wei-Jun
Abstract:In order to improve the smoothness of slice contours of a STL model in Rapid Prototyping Manufacturing(RPM),an algorithm of self-adaptive surface subdivision was proposed based on the Loop mode.Firstly,a mesh model was segmented into planar part and surface part,and new subdivision schemes were designed for the facets on the surface part connecting to the sharp edges.During this procedure,the flatness and tolerance flatness of a vertex were employed to determine whether this facet should be further subdivided to achieve self-adaptive subdivision.Finally,smoothness of the surface part was enhanced,while the sharp features were maintained.Thus,the smooth slice contours could be obtained from global information.
Keywords:Loop subdivision surface  self-adaptive subdivision surface  model slice  rapid prototyping manufacturing
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