Title:
プレス成形方法
Document Type and Number:
Japanese Patent JP5569609
Kind Code:
B1
Abstract:
A press forming method according to the present invention is a press forming method of pressing and forming a formed part 1 including: a top portion 5 having a projecting outer edge 3, a part of the projecting outer edge 3 being recessed inward; and a flange portion 7 that is formed by bending along the projecting outer edge 3 of the top portion 5. The method includes a first forming step of forming, at a region of a blank material in which the flange portion 7 is to be formed, a preformed part including a vertical wall portion to be a part of the flange portion 7 and a trough portion that is bent outward from the vertical wall portion and recessed on a side of the top portion 5, and a second forming step of forming the flange portion 7 by bending a region including the trough portion of the preformed part formed in the first forming process.
More Like This:
| JPS5514140 | BEAD MOLDING DEVICE OF CAN |
| JP2005028384 | BENDING DEVICE |
| JPS59163031 | WORKING METHOD OF SUPPORTING PIPE FOR PIPE FRAME |
Inventors:
Masaki Urabe
Application Number:
JP2013038314A
Publication Date:
August 13, 2014
Filing Date:
February 28, 2013
Export Citation:
Assignee:
JFE Steel Corporation
International Classes:
B21D19/08; B21D22/26
Domestic Patent References:
| JP2004188445A | 2004-07-08 | |||
| JPS62107827A | 1987-05-19 | |||
| JPS6127125A | 1986-02-06 | |||
| JP2007253173A | 2007-10-04 | |||
| JPH0739954A | 1995-02-10 | |||
| JP2010201486A | 2010-09-16 |
Attorney, Agent or Firm:
Toshihiko Ishikawa