在利用数控车床教学与培训、实际生产与加工的时候,一些轴套类零件经常出现带有重复轮廓形状和具有较大凹圆弧情况,用传统的粗车循环指令G71、G73,由于其走刀方式的特点,难免会产生根切、撞刀、加工效率低下等现象,故难以满足加工要求。主要介绍调用子程序的相关知识,可以很好地解决这些问题。 In the use of CNC lathe teaching and training, the actual production and processing, some of the shaft sleeve parts often appear with repeated contour shape and with a large concave arc situation, with the traditional rough car cycle instruction G71, G73, because of its The characteristics of the knife way, will inevitably produce radical cut, hit the knife, processing inefficiency and other phenomena, it is difficult to meet the processing requirements. The main introduction of the subroutine call the relevant knowledge, can be a good solution to these problems.