A burring processing method including increasing a diameter of a prepared hole provided in a metal component and bending a part of the metal component to form a burring processed portion (110) including an upright portion (120) and a curved portion (130), wherein in a cross-section that passes through an axis (cb) of the burring processed portion (110) and is parallel to the axis (cb) of the burring processed portion (110), a cross-sectional shape of the curved portion (130) on an inner surface of the curved portion consists of a curve, and a length of the curved portion (130) in a direction perpendicular to the axis (cb) of the burring processed portion (110) is at least 1.2 times a height of the curved portion in a direction parallel to the axis (cb) of the burring processed portion (110).
METHOD FOR MANUFACTURING BURRING PROCESSED ARTICLE AND BURRING PROCESSED ARTICLE
VERFAHREN ZUR HERSTELLUNG EINES ENTGRATVERARBEITUNGSARTIKELS UND ENTGRATVERARBEITUNGSARTIKEL
PROCÉDÉ DE TRAITEMENT D'ÉBAVURAGE ET ARTICLE TRAITÉ PAR ÉBAVURAGE
2025-06-25
Patent
Electronic Resource
English
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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