Metal working – Method of mechanical manufacture – Wheel making
Reexamination Certificate
2004-09-03
2008-10-28
Bryant, David P. (Department: 3726)
Metal working
Method of mechanical manufacture
Wheel making
C029S894322, C029S894353, C029S419200, C072S707000
Reexamination Certificate
active
07441335
ABSTRACT:
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.
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Imamura Yoshihaya
Yamashita Hiroyuki
Afzali Sarang
Bryant David P.
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel Ltd).
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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