Motor shell polishing device for ultrasonic motor machining

The utility model relates to a motor shell polishing device for ultrasonic motor machining, which comprises a base, a groove is arranged on the top surface of the base, a turntable is rotatably connected in the groove, a first motor is mounted on the bottom surface of the base, and an output shaft of the first motor is coaxially keyed with the turntable; through the arrangement of the first motor and the rotating disc, when the polishing position needs to be replaced, the position of a motor shell can be automatically added through rotation of the rotating disc, and different inner walls can be conveniently polished; a polishing mechanism is arranged, that is, a third motor drives a grinding roller to rotate, and the inner wall of the motor shell can be ground and polished through rotation of the grinding roller; and meanwhile, through rotation of the first lead screw and the second lead screw, the height and the horizontal position of the grinding roller can be adjusted, polishing of different positions of t