• CN:11-2187/TH
  • ISSN:0577-6686

›› 1996, Vol. 32 ›› Issue (6): 1-5,19.

• 论文 •    下一篇

用投影方法进行数控加工干涉检查与修正

冉瑞江;马德昌;王亚平;唐荣锡   

  1. 北京航空航天大学
  • 发布日期:1996-11-01

NC INTERFERENCE CHECK AND CORRECTION USING PROJECTION STRATEGY

Ran Ruijiang;Ma Dechang;Wang Yaping;Tang Rongxi   

  1. Beijing University of Aeronautics and Astronautics
  • Published:1996-11-01

摘要: 解决了数控加工的干涉检查问题。数控加工的进一步检查实际上就是检查刀具曲面和被加工曲面的有向距离。根据有向距离的符号进行进一步与否的判断并由其值(极值)的大小及极值的位置进行进一步修下,利用刀具曲面是一个绕刀轴的旋转面,易按精度离散处理的特点,不离散(分割)待检查曲面,而离散刀具曲面。在经度方向上可用刀具轮廓线(母线)绕刀轴旋转得到的一组幸免通过刀尖点的曲线来逼近,在纬度方向上可用圆心在刀轴上的一组经过同一条母线的圆来逼近。利用相邻点间的相关性,采用跟踪技术求取离散的刀具曲面嵌入被检查曲面的进一步深度及其位置。

关键词: 干涉, 加工, 检查, 数控, 投影

Abstract: Concise algorithm is presented to obtain gouge-free tool-path with projection strategy. Interference check and correction are regarded as calculation of directed distance between cutter's surface and part surface (s). According to sign (positive or negative) and value of directed distance, interference was detected and corrected. With advantage of revolved surface, cutter's surface can discrete easily. Using coherence between adjoining points and tracing method, interference depth and position are obtained with significant computational savings.

Key words: Check, Interference, Machining, NC, Projection