复杂曲面的五轴加工无干涉刀具路径生成技术研究

摘要

基于微分几何理论,对复杂曲面环形刀无干涉刀具路径生成算法进行研究,对复杂曲面进行曲面划分,在此基础上建立环形刀五轴加工模型,进行走刀步长、加工行距和相邻刀触点等的计算,并提出通过选择最佳刀具尺寸和改变刀具姿态进行干涉避免的方法.与其它环形刀刀具路径生成算法相比,本文提出的算法具有更高的准确性和可靠性.%Based on the theory of differential geometry, the five-axis machining gauging-free cutter path generation algorithm of the toroidal Cutter is researched. And five-axis machining model of the toroidal Cutter is built, the calculation of feeding step length, machining interval and adjacent cutter contact points etc. Is done based on the division of complex surfaces. Besides, the way of avoid tool interfere is presented by selecting optimum tool sizes and changing tool posture. Comparing with other algorithms, the proposed algorithm in this paper is more precise and reliable.