PROBLEM TO BE SOLVED: To thin partially the thickness of a rim without exerting a bad influence on the shape and strength of the rim.SOLUTION: After forming a changed-diameter part 18 by performing diameter reduction or diameter expansion of a part of a cylindrical rim base material 10, the changed-diameter part 18 is molded flatly and the part of the rim base material is thinned.
【課題】リムの形状および強度に悪影響を及ぼすことなく、リムの厚さを部分的に薄くすること【解決手段】円筒状のリム素材10の一部を縮径または拡径して変径部18を形成した後、変径部18を平らに成形して、該リム素材の一部を減肉する。【選択図】図5
MANUFACTURING METHOD OF WHEEL RIM FOR AUTOMOBILE
自動車用ホイールリムの製造方法
2015-06-18
Patent
Electronic Resource
Japanese
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 / B21H MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS , Herstellen besonderer Gegenstände aus Metall durch Walzen, z.B. Schrauben, Räder, Ringe, Büchsen, Kugeln / B60B VEHICLE WHEELS , Räder für Fahrzeuge |
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