Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1997-04-30
1999-01-26
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
298923, 2989332, B21H 500
Patent
active
058626964
ABSTRACT:
The invention relates to a method and an apparatus for the manufacture of a poly-V-pulley, particularly with a toothed reference mark sensor. The method uses per se known spin forming and combines in one setting on a spinning machine with tool changers, the method steps of upsetting, profiling and gear cutting. The method according to the invention is preferably based on a tilted circular metal blank, which has a bevelled or angled marginal area with a clearly defined length and wall thickness. From the tilted or upset blank is formed a cup-shaped preform with an asymmetrically reinforced, cylindrical area with the aid of a spinning roll and subsequently in a radial setting is infed a spinning roll with a recess and an axially limited diameter reduction and material accumulation are obtained. This is followed by preprofiling, profiling of the thickened area and a gear cutting on a simultaneously constructed reference mark sensor of an outer flange.
REFERENCES:
patent: 4551122 (1985-11-01), Kraft et al.
patent: 5072509 (1991-12-01), Bichel et al.
patent: 5152061 (1992-10-01), Himmeroeder
Larson Lowell A.
Leico GmbH & Co. Werkzeugmaschinenbau
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