Universal device for polishing conical surfaces of different threaded parts

The universal device for polishing the conical surfaces of the different threaded parts comprises a movable plate, a fixed block is fixedly installed on one side of the movable plate, a containing groove and a limiting groove are formed in the fixed block, and a first servo motor is connected into the containing groove and can drive a first rotating rod to rotate; a first rotating rod is connected to the output end of the first servo motor, one end of the first rotating rod extends into the limiting groove, a first bevel gear is welded to the surface of the first rotating rod, a second bevel gear is meshed with the surface of the first bevel gear, and a second rotating rod is welded to the interior of the second bevel gear; and the surface of the second bevel gear is meshed with a third bevel gear, a third rotating rod is welded in the third bevel gear, the bottom of the second bevel gear is in threaded connection with a clamping block, and the bottom of the clamping block extends to the outer portion of the