Internal-external thread joint automatic machining device of numerically-controlled machine tool

The utility model discloses an automatic machining device for internal and external thread joints of a numerical control machine tool. Including a base, the right side of the top of the base is fixedly connected with a numerically-controlled machine tool; a water tank is fixedly connected to the top of the base and located on the left side of the numerical control machine tool. Bearing frames arefixedly connected to the left side and the right side of the water tank, a roller is rotatably connected between the two bearing frames, a leakage hole is formed in the side wall of the roller, and afirst gear ring is fixedly connected to the right side of the outer surface of the roller. The utility model discloses an internal and external thread joint automatic machining device of a numerically-controlled machine tool. Due to the inclined design of the roller, the internal and external thread connectors do downward circular motion after falling onto the roller and finally smoothly fall ontothe discharging sliding pl