A method of press-forming a tubular part having a cross section of an irregular shape crushes a steel tube between an upper die and a lower die in order to form a V-shaped cross section. When the curvature radius of a tip of the upper die is defined as R 1 , the curvature radius of a bottom portion of the lower die corresponding to the tip of the upper die is defined as R 2 , and the wall thickness of the steel tube is defined as t; R 1 , R 2 , and t satisfy R 1 +2t=R 2 and 1.5t¤R 1 ¤3t.


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    Title :

    PRESS-FORMING METHOD OF TUBULAR PART HAVING CROSS-SECTION OF IRREGULAR SHAPE


    Additional title:

    VERFAHREN ZUM PRESSFORMEN EINES RÖHRENFÖRMIGEN GLIEDS MIT UNREGELMÄSSIGER QUERSCHNITTSFORM
    PROCÉDÉ DE FORMAGE SOUS PRESSE D'ÉLÉMENT TUBULAIRE DE SECTION TRANSVERSALE IRRÉGULIÈRE


    Contributors:

    Publication date :

    2018-09-26


    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 / B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge



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