Title:
METHOD FOR MANUFACTURING MAGNETIC STEEL SHEET HAVING NONMAGNETIC AREA, AND PUNCH/PRESS APPARATUS
Document Type and Number:
WIPO Patent Application WO/2011/077557
Kind Code:
A1
Abstract:
Disclosed is a punch/press apparatus (1) having a punching section (2) and a pressing section (3). The punching section (2) has: a holding section (4) which holds a board-like subject; a punching core section (53) which punches out a part of the subject being held; and a press back member (56), which is positioned on the side opposite to the core section (53) with respect to the subject, and which presses back the punched-out piece. The pressing section (3) has a lower member (6) and a pressing member (7). The lower holding member (42) of the holding section (4) and the lower member (6) are connected on the same plane. A magnetic steel sheet and a plate material composed of a modified metal are set on the punching section by placing one over the other, and are punched out at the same time, then, the punched out chips of both the plate materials are pressed back in the reverse direction of the punching direction, thereby fitting the modified metal chip in the magnetic steel sheet. Then, both the plate materials are slid to the pressing section (3) and pressed, thereby modifying the plate thickness difference due to variance in manufacture of both the plate materials. Then, a nonmagnetic area is formed by carrying a current.
Inventors:
SHIMIZU Takuya (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
清水 拓也 (〒71 愛知県豊田市トヨタ町１番地 トヨタ自動車株式会社内 Aichi, 〒4718571, JP)
清水 拓也 (〒71 愛知県豊田市トヨタ町１番地 トヨタ自動車株式会社内 Aichi, 〒4718571, JP)
Application Number:
JP2009/071625
Publication Date:
June 30, 2011
Filing Date:
December 25, 2009
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi Aichi, 71, 〒4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町１番地 Aichi, 〒4718571, JP)
SHIMIZU Takuya (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町１番地 Aichi, 〒4718571, JP)
SHIMIZU Takuya (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
International Classes:
H02K15/02; B21D28/00; B23K11/00; B23K11/11; B23K11/34
Attorney, Agent or Firm:
COSMOS PATENT OFFICE (Annex 2nd Floor, Nagoya Center Building 2-22, Nishiki 2-chome, Naka-ku, Nagoya-sh, Aichi 03, 〒4600003, JP)
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