METHOD FOR MANUFACTURING AN INTERIOR PERMANENT MAGNET ROTOR UNIT AND APPARATUS FOR MANUFACTURING AN INTERIOR PERMANENT MAGNET ROTOR

摘要

In manufacturing permanent magnets by filling insertion holes of a core with a magnet material, the density of the magnetic flux entering the magnet material can be restrained from being limited by the saturation magnetic flux density of the core. A guide member is placed so as to face a core in an axial direction. An orienting/magnetizing device faces the core and the guide member in the radial direction and applies a magnetic field to the guide member and the core in the radial direction. Insertion holes of the core are filled with the magnet material through guide holes of the guide member. The magnetic field is therefore applied from the orienting/magnetizing device to the magnet material passing through the guide holes.