环形刀五轴数控加工刀具路径生成算法  

Tool Path Generation Algorithm for Five-axis NC Machining with a Toroidal Cutter

作　　者：陈良骥[1] 程俊伟[1] 王永章[1] 

机构地区：[1]郑州航空工业管理学院机电工程系,哈尔滨工业大学机电工程学院,郑州,450015,哈尔滨,150001

出　　处：《机械工程学报》2008年第3期205-212,共8页Journal of Mechanical Engineering

基　　金：黑龙江省科技攻关基金(GB05A501)

摘　　要：将微分几何理论应用于环形刀五轴加工无干涉刀具路径生成方法的研究,分别推导出刀触点处刀具曲面和工件曲面曲率分布方程,结合这两个方程,进行进给步长、加工行距以及相邻刀触点等的计算并建立判断有无干涉发生的条件,利用该条件对刀具姿态角进行修正以避免干涉。对实际曲面进行路径计算结果表明,提出的方法能有效避免干涉而且缩短加工路径长度。The theory of differential geometry is applied to study interference-free tool path generation for five-axis machining with a toroidal curer. The distributing functions of curvature of tool and work-piece surfaces are respectively deduced. With the two functions, calculations of feeding step length, machining interval and adjacent cutter contact point etc. are carried out and condition of identifying whether gouging or not is established. Using the condition, the cutters＇ attitude angles can be updated to avoid interference The paths calculation to a real surface is carried out and it can be seen from the results that the proposed method can effectively avoid gouging and shorten total length of machining paths.

关 键 词：五轴加工 刀具路径生成 干涉 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]