Title:
金属板のプレス加工方法及びプレス金型並びにプレス成形品の製造方法
Document Type and Number:
Japanese Patent JP4984414
Kind Code:
B2
Abstract:
To provide a press formed article with which an increase in press working force can be suppressed and spring back is reduced and, a press working method and a press die for obtaining the same.
There are provided the press formed article of a metallic sheet characterized in that the portions subjected to bending and unbending deformation by die shoulders are formed to a waveform shape lined up with a plurality of rectilinearly extending irregularities, the press working method and the press die for forming the same.
COPYRIGHT: (C)2007,JPO&INPIT
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Inventors:
Yuichi Tokita
Yuji Yamazaki
Yuji Yamazaki
Application Number:
JP2005093182A
Publication Date:
July 25, 2012
Filing Date:
March 28, 2005
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B21D22/02; B21D22/26
Domestic Patent References:
| JP2001087816A | ||||
| JP7183442A | ||||
| JP2303630A | ||||
| JP61049610U | ||||
| JP63123531A | ||||
| JP7251221A | ||||
| JP56117831A |
Attorney, Agent or Firm:
Eiichi Kobayashi