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

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回转类零件的四轴无干涉刀位轨迹生成

北京航空航天大学机械工程及自动化学院

详细信息

作者简介:
吴丽萍(1969-),女,安徽枞阳人,博士生,100083,北京.

中图分类号: TP 39173
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- 文章访问数: 2851
- HTML全文浏览量: 131
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- 被引次数: 0
出版历程
- 收稿日期: 2000-09-22
- 网络出版日期: 2002-03-31

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

Beijing University of Aeronautics and Astronautics, School of Mechanical Engineering and Automation

摘要

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.
- 计算机辅助制造 /
- 数控机床 /
- 复合曲面 /
- 无干涉刀位轨迹
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.
- computer aided manufacturing /
- numerically controlled machine /
- rotationally free surface /
- free-interference toolpath.

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参考文献(1)

[1]Tang K, Cheng C C, Dayan Y. Offseting surface boundaries and 3-axis gouge-free surface machining[J]. CAD, 1995, 27(12):915~927. [2]李明. 叶轮、叶片类零件几何设计和数控加工 . 北京:北京航空航天大学机械工程及自动化学院,1990. [3]Vickers G W, Quan K W. Ball-mills versus end-mills for curved surface machining[J]. Journal of Engineering for Industry (Transactions of the ASME), 1989,111(1):22~26. [4]Li Ming, Zhu Xin-xiong. Estimating the cutter's maximum diameter in 5-axis nC face milling of turbine blades[J]. CADDM,1996,6(2):57~64.

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