Title:
METHOD AND APPARATUS FOR MANUFACTURING DIFFERENCE THICKNESS PLATE
Document Type and Number:
Japanese Patent JP2006297461
Kind Code:
A
Abstract:
To provide a method and apparatus for manufacturing a plate with different thickness portion suitable for suppressing the production cost.
A part of a blank material W is thin-walled by ironing the charged blank material W by side faces of a punch 10 and a die 20 while holding the blank material by the punch 10 and the die 20 by a forming die in which a side face 12 of the punch 10 protruded downwardly from an upper die 1 and a side face 22 of the die 20 protruded upwardly from a lower die 2 are arranged to face each other with the clearance (t) smaller than the thickness T of the blank material W to be formed when closing the die.
Inventors:
KAWAUCHI NORIAKI
WATARI TOMOAKI
WATARI TOMOAKI
Application Number:
JP2005124748A
Publication Date:
November 02, 2006
Filing Date:
April 22, 2005
Export Citation:
Assignee:
NISSAN MOTOR
International Classes:
B21D22/02
Domestic Patent References:
| JP2001330081A | 2001-11-30 | |||
| JPS6123525A | 1986-02-01 | |||
| JP2005074500A | 2005-03-24 | |||
| JPH02197321A | 1990-08-03 | |||
| JP2004237360A | 2004-08-26 |
Attorney, Agent or Firm:
Masaki Goto
Yoshio Matsuda
Yasunari Mita
Masaaki Iida
Yoshio Matsuda
Yasunari Mita
Masaaki Iida
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