Provided is a burring processing method, which is a method for forming a burring processed portion including a raised portion and a curved portion in a metal component having a pilot hole formed therein, the method being characterized by including: a preforming step of enlarging a diameter of the pilot hole, moving an edge portion of the pilot hole relative to the metal component in a first direction of a thickness direction of the metal component in a first range around the pilot hole of the metal component, and forming the whole first range into a preformed portion raised from the metal component in the first direction; and a main forming step of deforming the preformed portion in a second direction opposite to the first direction, forming a second range on an outer diameter side of the preformed portion to have the same height as the first range in the first direction, and forming part of a third range on an inner diameter side of the preformed portion from the second range to be part of the curved portion and the raised portion.


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    Titel :

    BURRING METHOD, BURRING DIE, BURRING DEVICE, AND BURRED ARTICLE


    Weitere Titelangaben:

    ENTGRATUNGSVERFAHREN, ENTGRATMATRIZE, ENTGRATUNGSVORRICHTUNG UND ENTGRATTER ARTIKEL
    PROCÉDÉ, MATRICE ET DISPOSITIF D'ÉBAVURAGE, ET ARTICLE ÉBAVURÉ


    Beteiligte:
    OTSUKA KENICHIRO (Autor:in) / AZUMA MASAFUMI (Autor:in) / HAMADA KOICHI (Autor:in) / TABATA RYO (Autor:in) / URUSHIBATA RYO (Autor:in) / KITAHARA YUUKI (Autor:in)

    Erscheinungsdatum :

    16.10.2024


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    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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