复杂曲面五坐标加工中主曲率匹配法的刃形误差  

CUTTING EDGE ERROR IN PRINCIPAL AXIS MATHOD FOR FIVE-AXIS MACHINING OF SCULPTURED SURFACES

作　　者：李志强[1] 陈五一[1] 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100083

出　　处：《机械工程学报》2006年第2期135-140,共6页Journal of Mechanical Engineering

基　　金：高新工程"隐身实验室"基金资助项目

摘　　要：主曲率匹配法是精密加工中一种较先进的算法,但在应用到圆环面刀具上时做了一些简化。对其中切削刃的简化所带来的误差进行了研究,建立了圆环面刀实际切削刃的数学表达式,提出了刃形误差的概念,推导出了误差表达式,并对若干关键参数的影响进行了定量研究。分析指出刃形误差是一种宽带误差,它对最大允许加工带宽有一定的限制,在实际应用主曲率匹配法时必须进行校验才能保证加工精度。The principal axis method is an advanced cutter positioning technique used for finish machining. But there are some simplifications in this method as it is used for a torus cutter, A detailed analysis about the errors caused by the simplications is presented. A precious equation of the actual cutting edge of torus is set up. The concept of the cutting edge error is brought out and its expression is also deduced, then some key factors are studied in detail It points out that the cutting edge error is relative to the stepover of cutting path. It will limit the width of cutting strip, and a precision verification should be done when the princle axis method is used in finish machining.

关 键 词：五坐标加工 主曲率匹配法 实际切削刃 特征线 刃形误差 

分 类 号：TP391.73[自动化与计算机技术—计算机应用技术]