Method for manufacturing plastic bonded permanent magnet rotor with buffering layer

The invention discloses a method for manufacturing a plastic bonded permanent magnet rotor with a buffering layer, belonging to the field of permanent magnet rotors. The technical scheme is that: the plastic bonded permanent magnet rotor comprises a metal shaft and a bonded permanent magnet; and the buffering layer is formed between the metal shaft and the bonded permanent magnet. The manufacturing method comprises the following steps of: I, molding and processing the buffering layer onto the outer side of the metal shaft by adopting a die pressing or injection molding way to form a semi-finished product; and II, molding and processing the bonded permanent magnet onto the outer side of the buffering layer by adopting an injection molding way or die pressing way to form a finished product. The invention has the beneficial effects that: the plastic bonded permanent magnet rotor with the buffering layer designed by the invention can be produced without changing the conventional production process and production