Crystal outer coffin polishing device

The utility model discloses a crystal outer coffin polishing device, and belongs to the technical field of polishing, the crystal outer coffin polishing device comprises a case, the inner wall of the case is fixedly connected with three driving motors, the output end of each driving motor is fixedly connected with a connecting block, the outer surface of each connecting block is in threaded connection with a fastening nut, and the outer side of each driving motor is provided with a turntable; wherein the front face of one rotating disc is fixedly connected with a cleaning pad, the front faces of the other two rotating discs are fixedly connected with a rough polishing pad and a fine polishing pad respectively, the inner wall of the machine box is fixedly connected with a liquid spraying pipe, and the back face of the machine box is fixedly connected with a controller. According to the crystal outer coffin polishing device, through the machine box, the driving motors, the connecting blocks, the rotating discs