Honda Motor Co., Ltd.

Takayuki Kano

Takeshi Sano

Kenji Matsutani

Hirokatsu Akiba

Provided is a press molding method in which a plate material is molded into a target molded body including a ridge section, said method including: a first step for molding an intermediate molded body; and a second step for forming the target molded body from the intermediate molded body. The target molded body and the intermediate molded body have coincident regions where the cross-sectional shapes coincide on both sides of an intermediate ridge section, and an intermediate region where the cross-sectional shapes do not coincide. The intermediate region includes: an outer region in which the intermediate molded body protrudes outward of an edge radius with respect to the target molded body; and an inner region in which the intermediate molded body is curved inward of the edge radius with respect to the target molded body.

Press molding method

The present invention is a press forming method for obtaining a target formed article that has an edge-shaped ridge section and that has a negative surface on one side and a positive surface on the other side with respect to the ridge section as a border, said press forming method including: a first step for forming an intermediate formed article having an intermediate ridge section having a larger radius than the edge radius of the ridge section; and a second step for forming the target formed article from the intermediate formed article. The intermediate formed article has a first intermediate positive surface that corresponds to the site extending from the ridge section to the negative surface of the target formed article and also has a second intermediate positive surface that corresponds to the site extending from the ridge section to the positive surface of the target formed article and that continues from the first intermediate positive surface and an intermediate negative surface continuing from the second intermediate positive surface.

Growing community of inventors

Tochigi-ken, Japan

Takayuki Kano