This press-forming method for an automobile outer panel uses a punch (3), a die (5), and a blank holder (7) to press-form a metal blank (51) into an automobile outer panel (61) having a feature line (63) and panel surface portions (65a, 65b), in which an elastic body (9) protruding toward the punch (3) is provided on a die-side forming surface portion (5b) for forming the panel surface portion (65a), and the elastic body (9) is provided on a die-side forming surface portion (5b) for forming the panel surface portion (65a). Comprising a step of bringing an elastic body (9) into contact with a metal plate (51) prior to a die (5), and a step of press-molding the elastic body (9) while pressing the metal plate (51) while flattening the elastic body (9). The elastic body (9) protrudes from the die-side molding surface portion (5b) such that the frictional force between the flattened elastic body (9) and the metal plate (51) becomes equal to or greater than the absolute value of the difference between the tensions generated on both sides of the portion (53) corresponding to the feature line (63).

    本发明的汽车用外板面板的冲压成型方法使用冲头(3)、冲模(5)及坯料保持器(7),将金属坯板(51)冲压成型为具有特征线(63)和面板面部(65a及65b)的汽车用外板面板(61),其中,在将面板面部(65a)成型的冲模侧成型面部(5b)设置向冲头(3)侧突出的弹性体(9),包括使弹性体(9)先于冲模(5)而与金属坯板(51)抵接的步骤和一边将弹性体(9)压扁而按压金属坯板(51)一边冲压成型的步骤,以使被压扁的弹性体(9)与金属坯板(51)的摩擦力成为在相当于特征线(63)的部位(53)的两侧产生的张力之差的绝对值以上的方式使弹性体(9)从冲模侧成型面部(5b)突出。


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    Title :

    Press forming method and press forming device for outer panel for automobile


    Additional title:

    汽车用外板面板的冲压成型方法及冲压成型装置


    Contributors:

    Publication date :

    2022-05-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    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 / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge



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