A method for manufacturing a press-formed product is provided that can suppress occurrence of a forming defect such as a crack in a starting material during press forming, and can also suppress occurrence of problems when transferring a starting material during press forming. In the method for manufacturing a press-formed product, a manufacturing intermediate is formed by forming, in a flat-sheet shaped blank sheet, a planned outline portion including an undulating shape which is used for forming an outline of an outer circumferential portion of a press-formed product. Further, the flat shape of the blank sheet is maintained in a region from the planned outline portion toward the center of the manufacturing intermediate, or an intermediate stretch-formed portion having a predetermined intermediate forming height is formed in the manufacturing intermediate in the region. Furthermore, a through-hole is formed by piercing a flat portion at which the flat shape is maintained or a stretch-formed-side top portion of the intermediate stretch-formed portion. In addition, the flat portion after the through-hole is formed therein is formed into a stretch-formed portion of a predetermined height, or the intermediate stretch-formed portion after the through-hole is formed therein is formed into a stretch-formed portion of a predetermined height that is greater than the intermediate forming height.


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    Title :

    METHOD FOR MANUFACTURING PRESS-MOLDED ARTICLE


    Additional title:

    VERFAHREN ZUR HERSTELLUNG EINES PRESSGEFORMTEN ARTIKELS
    PROCÉDÉ DE FABRICATION D'UN ARTICLE MOULÉ À LA PRESSE


    Contributors:

    Publication date :

    2022-09-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs / B62D MOTOR VEHICLES , Motorfahrzeuge



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