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Title:
圧粉コア及びその製造方法
Document Type and Number:
Japanese Patent JP5707831
Kind Code:
B2
Abstract:

To provide a dust core in a complicated shape which has superior magnetic characteristics, and a method of manufacturing the same.

Material powder containing magnetic powder is pressed to manufacture a stator core 23 in a shape configured such that a plurality of teeth 22 protrude from a stator yoke 21. This manufacturing method comprises two stages of pressing processes. In a first molding process, material powder for a component is charged into a component molding mold and press molded at predetermined pressing pressure to manufacture the component. In a second molding process, a plurality of components obtained in the first molding process are put into a dust core molding mold, and arranged at predetermined positions in the dust core molding mold so that the respective components form teeth 22. Material powder for a body is charged into the dust core molding mold and pressed molded at predetermined pressing pressure to obtain the stator core 23. At this time, the pressing pressure for press molding the components in the first molding process is higher than the pressing pressure for press molding the stator core 23 in the second molding process.

COPYRIGHT: (C)2011,JPO&INPIT


Inventors:
Satoshi Imamori
Application Number:
JP2010224091A
Publication Date:
April 30, 2015
Filing Date:
October 01, 2010
Export Citation:
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Assignee:
Fuji Electric Co., Ltd.
International Classes:
H01F41/02; B22F1/00; B22F3/00; B22F3/02; B22F3/035; B22F3/24; B22F5/00; B22F7/06; H01F3/08; H01F27/255
Domestic Patent References:
JP2009072018A
JP2005089777A
JP2009088362A
JP2004159428A
JP2008248306A
JP2001023809A
JP9074011A
JP2008154328A
JP2005312103A
JP2009072019A
JP2007287848A
JP2005184916A
Foreign References:
WO2006033295A1
Attorney, Agent or Firm:
Ichi Hirose
Hide Tanaka Tetsu