Polishing device for bearing box machining

The utility model relates to the technical field of bearing box machining, and discloses a polishing device for bearing box machining, which comprises a first motor, a polishing assembly is fixedly mounted at the output end of the first motor, the polishing assembly comprises a fixing rod, and the output end of the first motor is fixedly connected with the fixing rod. A movable plate is movably installed outside the fixing rod through a spring, a first polishing plate and a second polishing plate are fixedly connected to the outer portion of the movable plate, and the first polishing plate is located on the side, away from the first motor, of the second polishing plate. The output end of the first motor is fixedly connected with the fixed rod, so that the first motor can drive the fixed rod to rotate at a high speed, the movable plate is communicated with the first polishing plate and the second polishing plate to perform rotary polishing operation, and polishing operation, rough polishing and fine polishing