五轴数控加工叶片无干涉刀位轨迹的计算  

Trajectory Computation of an Interference-free Cutter for Five-axis NC Machining of Blades

作　　者：杨方飞[1] 阎楚良[1] 林洪义[2] 

机构地区：[1]中国农业机械化科学研究院 [2]江苏大学能源与动力工程学院

出　　处：《农业机械学报》2003年第2期97-100,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目 (项目编号 :5 0 13 5 0 10 )

摘　　要：根据微分几何特性 ,提出五坐标数控加工叶片时对叶片的工作面和背面的刀位轨迹计算分开予以讨论 ,对工作面而言 ,利用平头立铣刀加工时不存在干涉 ,而对背面而言 ,可能存在干涉。根据干涉的种类 ,分别对全局干涉和局部刀具干涉提出了快速判定依据 ,并对干涉点进行了修正。指出利用 Iso- scallop法可获得最优的轨迹长度 。The generation of an interference free cutter trajectory during blade machining by a five axis NC machine was investigated and analyzed. The trajectories of the pressure and suction surfaces of a blade should be individually calculated according to the theory of differential geometry. The results indicated that for the pressure surface machining by a flat end cutter the trajectory could be directly calculated because there was no interference occurred; while for the suction surface the calculation should be made prior to the determination of whether the interference existed. A quick detection method for global and local interferences was developed and a suggestion of adopting the Iso scallop method to obtain the optimum trajectory length was given.

关 键 词：机械制造工艺与设备 叶片 平头立铣刀 刀位轨迹 干涉 

分 类 号：TH311[机械工程—机械制造及自动化]