Method for improving rigidity of press molded product, press forming die, press molded article, and manufacturing method of press molded product

摘要

In order to suppress the springback of low-rigidity press-formed products, and to suppress the spring-back when the press-formed products are released from the mold, the rigidity of press-formed products that are press-formed from plate-shaped materials is improved by adding rigidity In doing so, the rigidity-added shape is arranged so as to extend in a direction intersecting a displacement contour line indicating a springback state in the initial shape of the press-formed product before the arrangement of the rigidity-added shape.