Numerical control lathe machining device

The utility model discloses a numerical control lathe machining device which comprises a movable base plate, a U-shaped block, a translation frame, a sliding block and a sliding rail, an air cylinderis installed on the front face of the movable base plate, a piston rod of the air cylinder is connected with the U-shaped block, the U-shaped block is fixed to the top end of the translation frame, and the translation frame is fixed to the sliding block. The sliding blocks are arranged on the corresponding sliding rails, the sliding rails are installed on the movable base plate, a connecting groove is formed in the side face of a vertical rod of the translation frame, a pressing rod is arranged in the connecting groove, the pressing rod is connected with the vertical rod through a rotating shaft, one end of the pressing rod is fixedly connected with one end of a spring, and the other end of the pressing rod is fixedly connected with the other end of the spring. And the other end of the spring is fixed on the verti