Pipe fitting internal thread machining device

The utility model discloses a pipe fitting internal thread machining device, and relates to the technical field of pipe fitting machining. Comprising a disc, a transverse sliding groove and a longitudinal sliding groove which are perpendicular to each other are formed in the top of the disc, the transverse sliding groove and the longitudinal sliding groove intersect in the middle, a tapping machine drill bit is arranged above the disc and right faces the intersection of the transverse sliding groove and the longitudinal sliding groove, a material conveying device is arranged at one end of the longitudinal sliding groove, and a material conveying device is arranged at the other end of the longitudinal sliding groove. A limiting piece is arranged at the other end of the longitudinal sliding groove. According to the automatic pipe fitting tapping device, through the arrangement of the material conveying device, the limiting piece and the like, when the automatic pipe fitting tapping device is used, only a plural