消隐算法在5轴NC加工干涉检查中的应用

应用科学学报 ›› 1998, Vol. 16 ›› Issue (4): 385-391.

消隐算法在5轴NC加工干涉检查中的应用

杨勇生, 左敦稳, 王珉, 王冷干

南京航空航天大学

收稿日期:1997-10-21 出版日期:1998-12-31 发布日期:1998-12-31
作者简介:杨勇生:讲师,博士生,南京航空航天大学机电工程学院,南京 210016

Application of the Hidden Curve Removal Algorithm in Interference Detecting of 5 -Axis NC Machining

YANG YONGSHENG, ZUO DUNWEN, WANG MIN, WANG LENGGAN

Institute of Mechanical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016

Received:1997-10-21 Online:1998-12-31 Published:1998-12-31

摘要/Abstract

摘要： 提出了一种用隐藏曲线消除算法来确定5轴NC加工无干涉可加工性区域的方法.该方法基于高斯映射理论,将5轴铣削的可加工性区域变换成3轴铣削的可加工性区域,也就是,首先应用M^S映射对加工曲面S(u,v)和约束表面K(s,t)进行数值计算,然后在正交子空间中采用隐藏曲线消除算法,将加工曲面的隐藏区域裁剪掉,则剩余部分能用平底刀在没有被约束表面干涉的情况下进行5轴NC加工.

关键词: 5轴加工, 可加工性区域, 刀具干涉, 消隐算法

Abstract: Proposed in this paper an approach that the hidden curve removal algorithm is used to determine the 5-axis millable areas of interference-free, which reduces the accessibility problem of 5-axis milling using a flat-end tool to a 3-axis accessibility problem based on the Gaussian mapping. That is, using the M^S mapping of a point q above surface S(u,v) and of constraining surfaces K(s,t), the surface S(u,v) regions that are hidden by constraining surfaces K(s,t) can be computed in the orthogonal space D, then the domain of the surfaces S(u,v) that can be milled using 5-axis flat-end tool without interference to constraining surface K(s,t) can be calculated by trimming away the hidden regions Back

Key words: 5-axis machining, hidden curve removal algorithm, millable regions, cutter interference

杨勇生, 左敦稳, 王珉, 王冷干. 消隐算法在5轴NC加工干涉检查中的应用[J]. 应用科学学报, 1998, 16(4): 385-391.

YANG YONGSHENG, ZUO DUNWEN, WANG MIN, WANG LENGGAN. Application of the Hidden Curve Removal Algorithm in Interference Detecting of 5 -Axis NC Machining[J]. Journal of Applied Sciences, 1998, 16(4): 385-391.