Abstract:
A magnetizing device of a rotor core capable of suppressing deformation of electromagnetic steel sheets is provided. A magnetizing device of a rotor core according to one aspect of the present invention is a magnetizing device of a rotor core in which electromagnetic steel sheets are laminated. The magnetizing device includes: a magnetizing yoke to magnetize the rotor core; and holding means for holding peripheries of the electromagnetic steel sheets that are laminated from a direction in which the electromagnetic steel sheets are laminated. It is therefore possible to suppress deformation of the electromagnetic steel sheets.
Abstract:
A rotor core heating device (100) is configured to heat an inner peripheral side surface and an outer peripheral side surface of a rotor core (150) through induction heating. The rotor core has a hollow cylindrical shape. The rotor core heating device includes a first coil (110), a second coil (120) and a magnetic flux shielding jig (170). The first coil is disposed inside the rotor core and is configured to heat the inner peripheral side surface of the rotor core through induction heating. The second coil is disposed outside the rotor core and is configured to heat the outer peripheral side surface of the rotor core through induction heating. The magnetic flux shielding jig has a hollow cylindrical shape and is disposed opposite a first end surface of the rotor core with a gap provided between the first end surface and the magnetic flux shielding jig in an axial direction of the rotor core.