北京航空航天大学学报 ›› 2002, Vol. 28 ›› Issue (3): 305-308.

• 论文 • 上一篇    下一篇

回转类零件的四轴无干涉刀位轨迹生成

吴丽萍, 施法中, 陈卫东, 朱心雄   

  1. 北京航空航天大学 机械工程及自动化学院
  • 收稿日期:2000-09-22 出版日期:2002-03-31 发布日期:2010-09-26
  • 作者简介:吴丽萍(1969-),女,安徽枞阳人,博士生,100083,北京.

Interference-Free Toolpath Generation of Rotationally Free Surfaces in Four-Axis NC Machining

WU Li-ping, SHI Fa-zhong, CHEN Wei-dong, ZHU Xin-xiong   

  1. Beijing University of Aeronautics and Astronautics, School of Mechanical Engineering and Automation
  • Received:2000-09-22 Online:2002-03-31 Published:2010-09-26

摘要: 带回转工作台的四轴机床最适合用来加工由复杂多曲面构成的回转体类模具或零件.为解决四轴加工干涉问题,提出将三轴保护面概念引入四轴加工中,并给出了相应的计算方法.在偏置面模型的基础上,研究了回转类零件的四轴无干涉刀位轨迹的生成算法,并以实例验证此算法高效稳定,满足工程要求.最后探讨了四轴加工仍存在的一些问题.

Abstract: Four-axis NC machine tools with rotation table are most suitable for the machining of rotationally complicated compound free form surfaces. To solve the interference problem in four-axis NC machining, the guard surface concept widely used in 3-axis machining was introduced into four-axis NC machining, corresponding guard surface calculating method was presented. Based on offset surface model, an algorithm of interference-free toolpath generation in four-axis machining was developed. Case study showed that the algorithm works well on PC platform. A brief review on problems to be further studied was also given.

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