Title:
METHOD FOR MANUFACTURING CORE MEMBER, AND CORE MEMBER
Document Type and Number:
WIPO Patent Application WO/2019/159847
Kind Code:
A1
Abstract:
[Problem] To provide a method for manufacturing a disk-shaped core member with which it is possible to improve roundness. [Solution] This method for manufacturing a core member is for manufacturing a disk-shaped stator core member 32 which constitutes a cylindrical stator core 31. This method for manufacturing a core member includes: a core member forming step for leaving, as a connecting section 52 on a steel plate 50, a section of the outer peripheral side of the stator core member 32 not requiring outer diameter dimensional accuracy, while forming, on the steel plate 50 by punching, a section of the outer peripheral side of the stator core member 32 requiring outer diameter dimensional accuracy and excluding the connecting section 52; and, after the core member forming step, a core member separating step for separating the stator core member 32 from the steel plate 50 by cutting off the connecting section 52.
Inventors:
HONDA TAKESHI (JP)
Application Number:
PCT/JP2019/004683
Publication Date:
August 22, 2019
Filing Date:
February 08, 2019
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02K15/02; H02K1/18
Foreign References:
| JP2016131479A | 2016-07-21 | |||
| JP2005086929A | 2005-03-31 | |||
| JPH04117153A | 1992-04-17 |
Download PDF: