Title:
キャラクターラインを有する外板パネルの製造方法および製造装置
Document Type and Number:
Japanese Patent JP7140132
Kind Code:
B2
Abstract:
In a method for producing an outer panel having a character line, a punch includes a projecting portion for forming a bent surface of the character line at a punch top portion, and a punch shoulder R portion. A contact pressure applied to a blank by at least one of the projecting portion and the punch shoulder R portion is higher than a contact pressure applied to the blank by a remaining portion of the punch which excludes the projecting portion and the punch shoulder R portion. A static friction coefficient of a first portion of the punch which includes at least one of the projecting portion and the punch shoulder R portion with respect to the blank is larger than a static friction coefficient of a second portion of the punch which excludes the first portion with respect to the blank.
Inventors:
Yasunori Sawa
Masahiro Saito
Yonemura Shigeru
Toru Egami
Koki Nakamura
Masahiro Saito
Yonemura Shigeru
Toru Egami
Koki Nakamura
Application Number:
JP2019547895A
Publication Date:
September 22, 2022
Filing Date:
December 25, 2017
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B21D22/26; B21D24/00; B21D24/04; B21D37/01
Domestic Patent References:
| JP2013233561A | ||||
| JP2008100240A | ||||
| JP2012061729A | ||||
| JP2015096271A | ||||
| JP9253770A | ||||
| JP2016129902A | ||||
| JP2004298954A | ||||
| JP1097574A | ||||
| JP2011156559A | ||||
| JP2007283341A | ||||
| JP2004276114A |
Foreign References:
| WO2016021685A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Britus
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