Rotor punching sheet, rotor and motor

The utility model discloses a rotor punching sheet, a rotor and a motor. The rotor punching sheet comprises an annular yoke part and tooth parts arranged on the yoke part, the tooth parts are sequentially arranged at intervals in the circumferential direction of the yoke part, a rotor groove is formed between every two adjacent teeth, a mounting cavity is defined by the rotor grooves, the mounting cavity is at least used for mounting a magnetic shoe, each tooth part comprises a tooth body and a wing piece, and the wing pieces are arranged on the tooth bodies. The fins are arranged on the sides, away from the yoke part, of the tooth bodies, and the outer side wall faces of the fins are arc wall faces extending towards the side close to the yoke part. The rotor punching sheet provided by the embodiment of the utility model is provided with the transition grooves, so that magnetic leakage can be avoided as much as possible on the premise that the strength of the rotor punching sheet is not influenced. 本实用新型公开了一种