发明名称 自動車用外板パネルのプレス成形方法およびプレス成形装置
摘要 PROBLEM TO BE SOLVED: To provide a press molding method of an outer plate panel for an automobile which is suitable to impart a sharp character line.SOLUTION: In a press molding method of an outer plate panel for an automobile, the outer plate panel for an automobile is press-molded from a material plate by using a press die which comprises: a die having a concave processed face and making the innermost portion of the concave processed face a valley line part; a punch having a convex processed face adaptable to the concave processed face and making the most protruding portion of the convex processed face a ridge line part; and a wrinkle holder for holding the material plate between the die and punch. A lining layer made of an elastic body is provided on an outside surface of the die in a vicinity of a line displacement generating side with respect to at least the valley line part. In cooperation with the die and wrinkle holder, the punch deforms the material plate while elastically deforming the lining layer at a punch bottom dead point closest to the die, and thereby press-molding the outer plate panel for an automobile.
申请公布号 JP5991493(B2) 申请公布日期 2016.09.14
申请号 JP20130236719 申请日期 2013.11.15
申请人 JFEスチール株式会社 发明人 飯塚 栄治;中川 欣哉
分类号 B21D22/26;B21D24/00 主分类号 B21D22/26
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