This paper introduces a new method of turning unequally spaced threads by using cam slot with automatic guiding converting cylindrical cam and automatic tool retracting unit for turning thread.

• 介绍了利用具有自动导向的转换圆柱凸轮轮槽和螺纹车削自动退刀装置进行不等距螺纹车削的新方法，应用该方法能有效地提高不等距螺纹的加工效率和加工质量。