Metal deforming – By use of tool acting during relative rotation between tool... – With metal deformation of different type
Patent
1983-07-27
1985-11-12
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
With metal deformation of different type
72348, B21D 3500
Patent
active
045520054
ABSTRACT:
A method of making a clutch rotor for use in an electromagnetic clutch according to this invention includes the steps of forming a cup-shaped blank with a generally cylindrical annular flange wall; applying an outward transaxial force to the annular flange wall of the cup-shaped blank to form an annular outward bulge in the flange wall forming at least one inwardly projecting approximately V-shaped groove in the annular bulge by a press operation; applying a roller working operation to the approximately V-shaped groove to form the final V-shaped groove; and pressing a portion of the bottom plate to form an inner cylindrical member.
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Larson Lowell A.
Sanden Corporation
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