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Patent Searching and Data


Title:
METHOD FOR MANUFACTURING SQIRREL-CAGE ROTOR
Document Type and Number:
WIPO Patent Application WO/2020/245921
Kind Code:
A1
Abstract:
This method for manufacturing a squirrel-cage rotor (30) includes: a first step of forming an aluminum bar by filling aluminum into a slot formed in a rotor core (1) by aluminum die casting; a second step of twisting around the rotation axis (C) while pulling, in the extension direction of the rotation axis (C), the rotor core (1) in which the aluminum bar is formed in the slot; and a third step of twisting in a direction opposite to that in the second step while compressing the rotor core (1) in the extension direction of the rotation axis (C). In the second step, the central portion (1c) of the rotor core (1) in the extension direction of the rotation axis (C) is locally twisted while grasping one end portion (1a) and the other end portion (1b) of the outer circumferential surface of the rotor core (1) in the extension direction of the rotation axis (C).

Inventors:
TERANISHI HIROO (JP)
OISHI SHINYA (JP)
OKADA JUNJI (JP)
Application Number:
PCT/JP2019/022193
Publication Date:
December 10, 2020
Filing Date:
June 04, 2019
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02K15/02; H02K1/24; H02K17/16
Foreign References:
JP2017184379A2017-10-05
JPS5843980B21983-09-30
JP2015139319A2015-07-30
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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