Machine tool precision feeding mechanism based on ultrasonic motor

The utility model relates to the technical field of ultrasonic motors, in particular to a machine tool precision feeding mechanism based on an ultrasonic motor, which comprises a bottom plate, a supporting assembly, a grinding device and a locking assembly, the supporting assembly comprises a supporting plate, a first limiting groove is arranged on the supporting plate, the grinding device comprises a grinding motor, and the output end of the grinding motor is fixedly connected with a connecting rod. A micro motor is fixedly connected to the tail end of the connecting rod; the locking assembly comprises a rotor; a rotor needing to be polished is fixed through the supporting assembly and the locking assembly, it is guaranteed that when a flange groove in the rotor is polished, the rotor can be kept stable, the flange groove in the rotor is polished through the polishing device, the micro motor drives the polishing block to be extruded on the surface of the flange groove, and the polishing efficiency is improve