摘要
提出了一种基于三角网格细分曲面模型的刀轨生成算法,建立三角网格细分曲面模型的空间聚类索引结构,基于该结构实现网格模型与刀轨截面快速、精确求交获取刀触点集,并根据刀触点对应曲面位置处的微分几何性质确定刀位点,采用最小生成树算法对刀位点集排序生成刀轨。实例证明,该算法可有效提高复杂曲面模型的刀轨生成效率及精度。
An algorithm of NC tool path generation for triangular meshing subdivision surface was proposed,which included three steps： first,the tool touching points were obtained through computing the intersection between the meshing model and the section based on the spatial index structure of triangular mesh subdivision surface;second,the cutter location points were generated according to the geometric properties on differential calculus of surface position corresponding to tool touching points;third,the cutter location points were ordered by using the minimum spanning tree algorithm,and which is proved that the algorithm can improve the efficiency of NC tool path generation and process precision effectively.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2009年第3期218-221,共4页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家"863"高技术研究发展计划资助项目(2006AA04Z105)
关键词
刀轨生成
三角网格曲面
R＊-树
细分曲面
NC tool path generation
Triangular mesh surface
R＊-tree
Subdivision surface
