Polishing device for engine gear production

The utility model relates to the technical field of gear machining, in particular to a polishing device for engine gear production, which comprises a base, a mounting seat is fixedly arranged on one side of the top of the base, fixing frames are fixedly arranged on two sides of the top of the base, a transmission rod is arranged on one side of each fixing frame through a rotating shaft, and a cavity is formed in each transmission rod. A first gear is arranged at the top end of the interior of the cavity through a rotating shaft, a second gear is arranged on one side of the interior of the cavity through a rotating shaft, the first gear is meshed with the second gear, and a containing groove is formed in one side of the transmission rod; when the grinding disc is used for many times or grinding discs with different mesh numbers need to be replaced, the push rod is pressed, so that the movable rod moves inwards under the action of the spring, the clamping block is separated from the connecting groove, the conne