To improve the performance of NC machine tool,the paper introduces the method of custom macro programming technique and simple call on transfer process of the metric system ACME screw thread.

• 介绍了米制梯形螺纹车削加工用户宏程序的编制和简单调用的方法,对提高数控机床的使用性能有很大的帮助,对其它非标螺纹的编程也具有一定的借鉴意义。