Method for manufacturing an interior permanent magnet rotor unit and magnetizing device

A method for manufacturing an interior permanent magnet rotor unit, comprising:

• magnetizing a magnet material filling a core of the rotor unit by using a magnetizing device to produce a permanent magnet, wherein,
• the rotor unit includes a plurality of the permanent magnets embedded in the core, a rotor is formed by the single rotor unit or by coupling a plurality of the rotor units in an axial direction, and the rotor is a component of an interior permanent magnet synchronous motor, wherein,
• the magnetizing device includes a radial magnetizing part that faces the core in a radial direction of the core, and an axial magnetizing part that faces the core in the axial direction of the core,
• a first magnetizing part, which is one of the radial magnetizing part and the axial magnetizing part, is a source of a magnetic field and is disposed in the magnetizing so that the radial magnetizing part faces the axial magnetizing part in the radial direction of the core or that the axial magnetizing part faces the radial magnetizing part in the axial direction of the core,
• in the magnetizing, the first magnetizing part applies the magnetic field toward the core to magnetize the magnet material, and
• the first magnetizing part applies the magnetic field toward a second magnetizing part, which is the other of the radial magnetizing part and the axial magnetizing part, to apply the magnetic field to the magnet material via the second magnetizing part.