Patent ID: 11962204
Assignee: AISIN CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 0:
1. A method for manufacturing a rotor that is operatively associated with an apparatus, the rotor includes an annular rotor core provided with a shaft insertion hole, and a tubular shaft, the rotor manufacturing method comprising steps of:
inserting the tubular shaft into the shaft insertion hole of the rotor core;
pressing the rotor core in a central axis direction of the rotor core by using a core pressing member of the apparatus; and
fixing the tubular shaft to the rotor core, while the rotor core pressed by performing hydroforming, wherein the performing of hydroforming comprises filling a fluid into the tubular shaft and pressurizing the fluid so as to expand the tubular shaft, thus pressure-welding the tubular shaft to an inner peripheral surface of the shaft insertion hole.