METHOD FOR MANUFACTURING LAMINATED IRON CORE AND SHAPE OF SCRAP PRODUCED THEREBY
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United States of America Patent
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N/A
Issued Date -
Oct 30, 2014
app pub date -
Nov 13, 2012
filing date -
Dec 5, 2011
priority date (Note) -
Published
status (Latency Note)
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Abstract
A method for manufacturing a laminated iron core by press punching a thin strip material to manufacture a motor core, comprising, before punching out a scrap 10 of an iron core piece 11 for the motor core, forming a plurality of partition holes 15 in the scrap 10 to divide the scrap 10 into areas 20, each of the partition holes 15 being connected at one end thereof with a peripheral portion 14 of the scrap 10 through a first connecting portion 17. The method further comprises forming a central hole 12, which is connected with the partition holes 15 through second connecting portions 18, at a central portion of the scrap 10. Accordingly, provided are the method for manufacturing a laminated iron core without causing scrap pulling when punching out and laminating the thin iron core pieces 11 and the shape of the scraps formed thereby.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| JP | B2 | JP5764483 | Dec 05, 2011 |
| WO | A1 | WO2013084675 | Nov 13, 2012 |
| CN | B | CN103959616 | Nov 13, 2012 |
International Classification(s)
- 2012 Application Filing Year
- H02K Class
- 1853 Applications Filed
- 1610 Patents Issued To-Date
- 86.89 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- H02K Class
- 3.86 % this patent is cited more than
- 11 Age