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Title:
METHOD FOR FORMING HOLLOW FORMED BODY, FORMING DEVICE, AND HOLLOW FORMED BODY
Document Type and Number:
Japanese Patent JP2007044714
Kind Code:
A
Abstract:

To provide a method for forming a hollow formed body having complicated and ununiform cross-sectional shape from a hollow tubular material.

The method comprises a liquid pressure forming stage where a liquid pressure is applied to the inside of a hollow tubular material 10 having a recessed part 14, and the same is bulged and deformed, so as to form a hollow formed body. At least either the position or shape of the recessed part 14 is changed along the axial direction of the hollow tubular material 10 corresponding to the external shape of the hollow formed body.


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Inventors:
YOSHITOME MASAO
Application Number:
JP2005229997A
Publication Date:
February 22, 2007
Filing Date:
August 08, 2005
Export Citation:
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Assignee:
NISSAN MOTOR
International Classes:
B21D7/00; B21D22/02; B21D26/033; B21D26/053; B21D53/88
Domestic Patent References:
JP2002045923A2002-02-12
JPS61219435A1986-09-29
JPH11333527A1999-12-07
JPH06312215A1994-11-08
JP2003211236A2003-07-29
JP2005334941A2005-12-08
JP2003117622A2003-04-23
JP2000246361A2000-09-12
JP2005059047A2005-03-10
JP2005040797A2005-02-17
JP2004322123A2004-11-18
Attorney, Agent or Firm:
Mikio Hatta
Yasuo Nara
Katsuyuki Utani



 
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