Title:
プレス成形方法及びプレス成形装置
Document Type and Number:
Japanese Patent JP6922584
Kind Code:
B2
Abstract:
The present disclosure is applied to a press molding method for press-molding a workpiece by a press die composed of an upper die and a lower die while holding the workpiece by a die cushion. The press molding method according to the present disclosure includes pressing process, in which a press position at which the workpiece is pressed by the press die is gradually lowered while repeatedly pressing and releasing the workpiece by the press die a plurality of times until the press position reaches a bottom dead center, wherein in the pressing process, a holding force for holding the workpiece by the die cushion is controlled separately from a press molding force for press-molding the workpiece by the press die.
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Inventors:
Tsunekawa Kunitachi
Satoshi Blacksmith
Koichi Morishita
Urata Isamu
Hasebe Asahiko
Satoshi Blacksmith
Koichi Morishita
Urata Isamu
Hasebe Asahiko
Application Number:
JP2017178751A
Publication Date:
August 18, 2021
Filing Date:
September 19, 2017
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
B21D24/02; B21D22/20; B30B15/14; B30B15/18
Domestic Patent References:
| JP2012505082A | ||||
| JP2006255787A | ||||
| JP2008100242A | ||||
| JP11254197A | ||||
| JP2014176863A | ||||
| JP2008023534A | ||||
| JP5329554A | ||||
| JP2011136368A |
Foreign References:
| US20160271675 |
Attorney, Agent or Firm:
Ken Ieiri