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Title:
PUNCH PROCESSING METHOD FOR LAMINATED IRON CORE AND METHOD FOR MANUFACTURING LAMINATED IRON CORE
Document Type and Number:
WIPO Patent Application WO/2016/104686
Kind Code:
A1
Abstract:
This punch processing method for a laminated iron core, which feeds a plurality of steel plates continuously into a mold and carries out punch processing of the plurality of steel sheets in a stacked state in a plurality of steps within the mold, is characterized by including a step for carrying out punch processing of the outermost periphery of the laminated iron core after affixing the plurality of stacked steel sheets to each other to affixing parts FA positioned on the outside of a closed curve L corresponding to the outermost periphery of the laminated iron core and affixing parts FB positioned in a part finally forming the laminated iron core.

Inventors:
SENDA KUNIHIRO (JP)
UESAKA MASANORI (JP)
ODA YOSHIHIKO (JP)
Application Number:
PCT/JP2015/086190
Publication Date:
June 30, 2016
Filing Date:
December 25, 2015
Export Citation:
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Assignee:
JFE STEEL CORP (JP)
International Classes:
B21D28/02; B21D39/03; H01F41/02; H02K15/02
Foreign References:
JPS57156657A1982-09-28
JP2003274582A2003-09-26
JPS6423745A1989-01-26
Other References:
See also references of EP 3238847A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
Patent business corporation Sakai international patent firm (JP)
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