公开(公告)号：US20190084026A1

公开(公告)日：2019-03-21

申请号：US16106211

申请日：2018-08-21

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Kunihiro TSUNEKAWA ,  Satoshi KITAI ,  Hirokazu MORISHITA ,  lsamu URATA ,  Asahiko HASEBE

IPC分类号： B21D24/10 ,  B21D24/02

摘要： 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.