Aluminum alloy contour polishing device

The utility model discloses an aluminum alloy contour polishing device, which relates to the technical field of polishing devices and comprises a base and a polishing disc, support frames are mounted at the top of the base, a top frame is mounted at the tops of the two support frames, a transmission mechanism is mounted at the bottom of the top frame, and the polishing disc is mounted at the bottom of the transmission mechanism. A transmission motor is installed in the base through a groove, and the top of the transmission motor is connected with a large gear through a transmission shaft. When the aluminum alloy contour polishing device is used, a transmission motor can drive a large gear to rotate, the large gear drives a small gear to rotate, the small gear drives a rack to slide and drives a clamp on the top to move close to each other, and at the moment, aluminum alloy in the middle of the base can be clamped and limited; therefore, displacement of the aluminum alloy during polishing can be avoided, the p