本发明是关于金属管子内壁螺纹槽的加工制造方法。以往,内螺蚊管的加工方法一般采用挤压、拉拔或滚轧等加工制造方法。其中拉制方法给金属管子带来较大的应力,而且在拉刀的使用寿命与金属伤痕等方面还存在一定问题。为此,也有建议在管子的外部圆周上通过几个象行星一样旋转的滚子的压紧,来进 The present invention relates to a method of manufacturing and processing a thread groove in an inner wall of a metal pipe. In the past, the internal mosquito pipe processing methods generally use extrusion, drawing or rolling and other manufacturing methods. Among them, the drawing method brings great stress to the metal pipe, and there are still some problems in the service life of the broach and the metal scar. To this end, it is also advisable to press in on the outer circumference of the tube a few rollers that rotate like planets,