Piston rod finish machining device

The utility model discloses a piston rod finish machining device which comprises a supporting plate, supporting legs are fixedly connected to the corners of the bottom end of the supporting plate, a vertical plate is fixedly connected to one side of the surface of the top end of the supporting plate, and a second rotating motor is fixedly connected to one side of the top of the vertical plate through bolts. The side, away from the second rotating motor, of the vertical plate is fixedly connected with a plurality of connecting rods, the other ends of the connecting rods are rotationally connected with clamps, and an automatic machining mechanism is arranged on the surface of the top end of the supporting plate. The automatic machining mechanism is arranged, under the action of the driving motor and the rotating motor, the clamp and the threaded rod are driven to rotate, the machining cutter is promoted to machine the outer surface of the piston rod, production efficiency can be improved, labor intensity can be