Title:
STATOR CORE MANUFACTURING METHOD, STATOR CORE, AND MOTOR
Document Type and Number:
WIPO Patent Application WO/2023/182256
Kind Code:
A1
Abstract:
This stator core manufacturing method includes: a cut line forming step for pressing circumferential end parts of a plurality of divided core piece forming regions, at which divided core pieces are to be formed in a stator core plate forming region of a steel plate and which are arranged circumferentially, in the thickness direction of the steel plate, and thereby forming cut lines in only circumferential boundary portions of the plurality of divided core piece forming regions in the stator core plate forming region; and a push-back step for returning, to original positions of the steel plate, portions of the divided core piece forming regions pressed in the thickness direction in the cut line forming step.
Inventors:
KITA NOBUYUKI (JP)
YONEYAMA TAKASHI (JP)
YONEYAMA TAKASHI (JP)
Application Number:
PCT/JP2023/010828
Publication Date:
September 28, 2023
Filing Date:
March 20, 2023
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02K15/02; H02K1/18
Domestic Patent References:
| WO2016147214A1 | 2016-09-22 | |||
| WO2018062003A1 | 2018-04-05 | |||
| WO2019049486A1 | 2019-03-14 |
Foreign References:
| JP2012005155A | 2012-01-05 | |||
| JP2015080412A | 2015-04-23 | |||
| JP2021052574A | 2021-04-01 |
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