Dual Drive Curve Tool Path Planning Method for 5-axis NC Machining of Sculptured Surfaces  

复杂曲面五坐标加工中双线驱动刀轨规划(英文)

作　　者：徐汝锋[1] 陈志同[1] 陈五一[1] 吴献珍 朱剑军 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191 [2]昌河飞机工业集团,景德镇333000

出　　处：《Chinese Journal of Aeronautics》2010年第4期486-494,共9页中国航空学报（英文版）

基　　金：National Natural Science Foundation of China (50875012);National High-tech Research and Development Program (2008AA04Z124);National Science and Technology Major Project (2009ZX04001-141);Joint Construction Project of Beijing Municipal Commission of Education

摘　　要：The problem of finished surface being not first-order continuous commonly exists in machining sculptured surfaces with a torus cutter and some other types of cutters. To solve this problem, a dual drive curve tool path planning method is proposed in this article. First, the maximum machining strip width of a whole tool path can be obtained through optimizing each tool position with multi-point machining （MPM） method. Second, two drive curves are then determined according to the obtained maximum machining strip width. Finally, the tool is positioned once more along the dual drive curve under the condition of tool path smoothness. A computer simulation and cutting experiments are carried out to testify the performance of the new method. The machined surface is measured with a coordinate measuring machine （CMM） to examine the machining quality. The results obtained show that this method can effectively eliminate sharp scallops between adjacent tool paths, keep tool paths smooth, and improve the surface machining quality as well as machining efficiency.The problem of finished surface being not first-order continuous commonly exists in machining sculptured surfaces with a torus cutter and some other types of cutters. To solve this problem, a dual drive curve tool path planning method is proposed in this article. First, the maximum machining strip width of a whole tool path can be obtained through optimizing each tool position with multi-point machining （MPM） method. Second, two drive curves are then determined according to the obtained maximum machining strip width. Finally, the tool is positioned once more along the dual drive curve under the condition of tool path smoothness. A computer simulation and cutting experiments are carried out to testify the performance of the new method. The machined surface is measured with a coordinate measuring machine （CMM） to examine the machining quality. The results obtained show that this method can effectively eliminate sharp scallops between adjacent tool paths, keep tool paths smooth, and improve the surface machining quality as well as machining efficiency.

关 键 词：dual drive curve tool path planning multi-point machining 5-axis sculptured surfaces numerical control （NC） MACHINING 

分 类 号：TG659[金属学及工艺—金属切削加工及机床] TH-39[机械工程]