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1. (WO2018123975) ROTOR CORE MANUFACTURING METHOD AND ROTOR CORE

Pub. No.:    WO/2018/123975    International Application No.:    PCT/JP2017/046439
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Tue Dec 26 00:59:59 CET 2017
IPC: H02K 15/02
H02K 1/18
Applicants: AISIN AW CO., LTD.
アイシン・エィ・ダブリュ株式会社
Inventors: IKEMOTO Masayuki
池本正幸
USHIDA Hideharu
牛田英晴
ANAI Takehiro
穴井岳洋
Title: ROTOR CORE MANUFACTURING METHOD AND ROTOR CORE
Abstract:
This method for manufacturing a rotary electric machine rotor core, comprises: a layering step for layering a plurality of electromagnetic steel sheets (20) so as to form a through hole (H) by connecting respective hole portions of the electromagnetic steel sheets to one another; and a welding step for welding the inner surface of the through hole (H) in the layering direction (A) in a state where the through hole (H) is filled with an inert gas (G).