RIGIDITY IMPROVEMENT METHOD FOR PRESS-MOLDED ARTICLE, PRESS-MOLDING DIE, PRESS-MOLDED ARTICLE, AND PRODUCTION METHOD FOR PRESS-MOLDED ARTICLE

摘要

The present invention is characterized in that, when the rigidity of a press-molded article obtained by press molding of a sheet-like material is improved by a rigidity-imparting shape in order to suppress springback of a press-molded article having a low rigidity shape and to suppress springback during release of a press-molded article from a mold, the rigidity-imparting shape is disposed so as to extend in the cross direction with respect to displacement contour lines indicating the state of springback in an initial shape of the press-molded article before disposition of the rigidity-imparting shape in the press-molded article.