数控车削加工中常见的螺纹加工有普通螺纹、锥螺纹、管螺纹、内螺纹等,但在曲面上加工螺纹很难实现,以椭圆曲面为例,在其表面进行变螺距螺纹的加工,以此体现一些特殊螺纹的一般加工方法,为生产加工提供参考。 Common thread machining CNC machining common thread, taper thread, pipe thread, internal thread, etc., but in the curved surface of the thread is difficult to achieve, the elliptical surface, for example, in the surface of the variable-pitch thread processing, as a Reflects the general processing of some special thread methods for the production and processing to provide a reference.