中国机械工程 ›› 2010, Vol. 21 ›› Issue (04): 452-457.

• 机械基础工程 • 上一篇    下一篇

基于区域划分的刀具方向控制方法

李炳林;王学林;胡于进;李成刚
  

  1. 华中科技大学,武汉,430074
  • 出版日期:2010-02-25 发布日期:2010-03-10
  • 基金资助:
    国家重点基础研究发展计划资助项目(2009CB724306);国家自然科学基金资助项目(50675078) 
    National Program on Key Basic Research Project (973 Program)(No. 2009CB724306);
    National Natural Science Foundation of China(No. 50675078)

Tool Orientation Control Method Based on Divided-area Algorithm

Li Binglin;Wang Xuelin;Hu Yujin;Li Chenggang
  

  1. Huazhong University of Science and Technology,Wuhan,430074
  • Online:2010-02-25 Published:2010-03-10
  • Supported by:
     
    National Program on Key Basic Research Project (973 Program)(No. 2009CB724306);
    National Natural Science Foundation of China(No. 50675078)

摘要:

针对复杂曲面的五轴加工,提出了一种刀具方向控制的方法,并给出了相应的算法。对曲面进行三角网格划分,通过三角面片的法矢比较和面片合并将曲面划分成多个区域;构造区域单位矢量集的锥平均值,先用锥平均值代替区域的初始加工方向,再对刀具方向进行局部优化和修正。通过实例说明该方法在规划刀具方向中的应用。

关键词:

Abstract:

This paper presented a methodology and algorithm of tool orientation control for 5-axis sculptured surface CNC machining. First, the surface triangle grids were generated, and the normal vectors of the surface triangle patches were compared, then the patches the normal vectors of which were within a given tolerance were combined as a area.A divided-area algorithm was proposed to find the initial tool orientation by configurating a cone mean vector of the unit vector set,initial tool orientation was optimized and corrected.Finally,computer implementation and examples were provided,the developed method can be used to automate the planning of tool orientation generation.

Key words: 5-axis CNC machining, sculptured surface machining, tool direction, divided-area algorithm

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