点云模型再设计的刀轨重新生成技术  

Tool-path regeneration for point cloud design modification

作　　者：刘威[1,2] 周来水[1,2] 安鲁陵[1,2] 

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]江苏省精密与微细制造技术重点实验室,江苏南京210016

出　　处：《计算机集成制造系统》2013年第10期2432-2437,共6页Computer Integrated Manufacturing Systems

基　　金：江苏省科技支撑计划资助项目(BE2008136);江苏省高校优势学科建设工程资助项目~~

摘　　要：逆向工程中的点云模型往往需要多次修改和试制才能满足需要,通常修改的区域都很小,若只对修改区域重新生成刀轨将大大减少计算时间,为此提出一种算法。首先识别出受修改影响的刀位点,逐行重新计算坐标,并新增刀位点使其满足加工误差,未受修改影响的刀位点继续沿用;然后计算新生成的刀位点与邻行刀轨的残留高度,若超过允许值,则新增若干行刀轨。实例验证表明,当点云修改区域所占比例较小时,与重新生成所有刀轨相比,算法耗时较少。In Reverse Engineering （RE）, the point cloud model usually needs to be modified and machined repeatedly to meet the configuration requirement. Aiming at the problem that the calculate time would reduce significantly if regenerated the tool path only for the modified region, a point cloud design modification tool path regeneration algorithm was proposed. The Cutter Location （CL） points in the modified region were identified and line-by-line recalculated, and new CL points were added to meet tolerance requirement. The regenerated scallop height values of new CL point and adjacent tool path were cal- culated. If they were greater than the given value, new lines of CL points were added. The algorithm was tested on point cloud, and the result showed that when the modified region was small, the algorithm cost less time than all regenerated tool path.

关 键 词：逆向工程 点云 刀轨修改 刀轨生成 产品设计 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]