Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Methods of electromagnetic forming aluminum alloy wheel for automotive use
A metal mold for electromagnetic forming, with the inner peripheral face thereof, serving as a forming face, is disposed on the outer peripheral side of a columnar workpiece, and a coil for electromagnetic forming is disposed on the inner peripheral side of the columnar workpiece. In a state of a configuration as described, electric energy is thrown into the coil for the electromagnetic forming, and the columnar workpiece is caused to undergo flaring to be thereby pressed against the forming face of the metal mold for the electromagnetic forming, so as to be turned into a shape corresponding to the forming face by means of the electromagnetic forming, thus obtaining a wheel rim. A disc is welded to the wheel rim obtained, and curling is applied to outer edges of the wheel rim. With the adoption of a method of manufacturing an automotive wheel, a manufacturing process as a whole is enhanced in efficiency.
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
Y Y B Y Y Y
Y10T Y10S B21D Y10T Y10T Y10T
additional additional inventional additional additional additional
Yoshihaya Hiroyuki
Imamura Yamashita