3维仿型数据云处理及数控轨迹生成的研究  

Research on 3D Data Cloud and CNC Code Generation

作　　者：阳道善[1] 陈吉红[2] 朱志红[2] 周济[2] 

机构地区：[1]华中科技大学,武汉市430074 [2]华中科技大学国家数控工程中心

出　　处：《中国机械工程》2002年第16期1375-1378,共4页China Mechanical Engineering

基　　金：国家 8 63高技术研究发展计划资助项目 (863-5 11- 82 0- 0 0 4)

摘　　要：提出直接根据单值曲面 3维密集测量数据点云进行刀具半径长度补偿 ,生成刀具加工轨迹并有效清除刀具干涉的新算法。同时 ,提出一套有效数据结构 ,只扫描一次即可对数据云进行网格划分 ,对于密集数据云 ,不用插值 ,可生成零件表面三角片逼近曲面 ,用于零件的真实感仿真显示。This paper presents a new algorithm to calculate the CNC tool path directly from the 3D data cloud, eliminating all path interference at the same time.It also presents a set of efficient data structure to grid the 3D data cloud and calculate the triangle-approaching surface to render the solid view of the measured surfaces. Traditional algorithms using approaching surface normal direction to calculate CNC tool path are not practical sometimes in engineering because the normal direction would amplify the error of calculation and measurement when getting the off-set surfaces, and the worse case is that it is difficult to eliminate the path interference.

关 键 词：3维仿型数据云 数控加工 轨迹 刀具干涉 数据处理 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]