PRESS FORMING METHOD

WIPO Patent Application WO/2014/097745

A1

This press forming method carries out press forming to form a formed component (1) having a top portion (5) that has a recessed shaped outer edge (3) wherein part of the outer edge is recessed inward and a flange part (7) formed by bending along the recessed shaped outer edge (3) in the top portion (5). The press forming method includes: a first forming step (S1) that forms, at a site in which the flange part (7) is to be formed in blank material (9), a preformed shape component (15) that includes a vertical wall portion (11) that becomes part of the flange part (7) and a protruding part (13) that is bent outward from the vertical wall portion (11) and protrudes to the top portion (5) side; and a second forming step (S2) that forms the flange part (7) by bending a site that includes the protruding part (13) of the preformed shape component (15) formed in the first forming step (S1) along a bending line forming a boundary with the vertical wall portion (11).

URABE MASAKI (JP)

PCT/JP2013/079132

June 26, 2014

October 28, 2013

Click for automatic bibliography generation  

JFE STEEL CORP (JP)

B21D19/08; B21D22/26

WO2012070623A1

2012-05-31

JPS5893322U	1983-06-24
JPH0569049A	1993-03-23
JP2009241109A	2009-10-22
JP2009255167A	2009-11-05
JP2008119736A	2008-05-29
JP2009214118A	2009-09-24
JP2009160655A	2009-07-23

See also references of EP 2933034A4
"Third Edition of Press Forming Difficulty Handbook", 30 March 2007, NIKKAN KOGYO SHIMBUN, LTD., pages: 234
CURRENT ADVANCES IN MATERIALS AND PROCESSES, vol. 21, 2008, pages 321
JOURNAL OF THE JAPAN SOCIETY FOR TECHNOLOGY OF PLASTICITY, vol. 52, no. 604, 2011, pages 569 - 573

SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)

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