PERMANENT MAGNET MOTOR AND ELECTRIC APPARATUS USING THE SAME

摘要

PROBLEM TO BE SOLVED: To improve productivity and lower manufacturing cost by reducing the weight of a permanent magnet motor, having a permanent magnet holding plate and realizing automatic balancing of a rotor. SOLUTION: Balancing is conducted by fixing a permanent magnet holding plate 3 consisting of a synthetic resin to a rotating shaft 2 with thermal melting, positioning the center position for the cutting on the external circumferential surface by defining a hole or a recessed portion or a projected portion 5 provided at the end surface of the permanent magnet holding plate 3 as the reference position and cutting the external circumferential surface of the rotor iron core 1 and the permanent magnet holding plate 3.