数控车仿形循环指令退刀距离选择方法

Retract Distance Selection in the Profiling Loop Command on NC Lathe

通过对数控车仿形粗车循环指令G73的分析,找出刀具进给路线的规律,并从减短刀具进给路径、避免产生过切等方面考虑提出了退刀距离、精加工余量等参数的选择方法。

This paper analyses the CNC lathe＇s copying cutting rotate instruction （G73）, finds the law of the cutter＇s feeding route. According to the tool path and the excess cut, the paper gives the techniques for choosing the distance of relief （△i, △k） and the allowance of finish machining（△u, △w）.