Title:
自動車用外板パネルのプレス成形方法及びプレス成形装置
Document Type and Number:
Japanese Patent JP7070616
Kind Code:
B2
Abstract:
A method for press forming an automotive outer panel according to the present invention uses a punch 3, a die 5, and a blank holder 7 to press form a metal sheet 51 into an automotive outer panel 61 having a character line 63 and panel surface portions 65a and 63b, the method including a step of providing the punch 3 with an elastic body 9 caused to protrude toward the die 5 beyond a punch-side forming surface portion 3c and making the elastic body 9 in contact with the metal sheet 51 and a step of performing press forming while making the elastic body 9 in contact with the metal sheet 51 and forming the character line at a bottom dead center of forming . A protrusion amount of the elastic body 9 from the punch-side forming surface portion 3c is set such that the elastic body 9 contacts the metal sheet 51 before a ridgeline 3a of the punch 3 contacts the metal sheet 51 to cause the metal sheet 51 to become plastically deformed.
Inventors:
Yasuhiro Kishigami
Application Number:
JP2020136100A
Publication Date:
May 18, 2022
Filing Date:
August 12, 2020
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B21D22/26; B21D24/00; B21D24/04
Domestic Patent References:
| JP2007268608A | ||||
| JP91254A | ||||
| JP1177176A | ||||
| JP2018183786A | ||||
| JP2018103249A |
Attorney, Agent or Firm:
Toshihiko Ishikawa
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