Means for making double groove pulleys

Details Means for making double groove pulleys Means for making double groove pulleys

1975-05-27

1976-05-04

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

72105, 29159R, B21H 100

Patent

active

039539954

ABSTRACT:
An apparatus is provided for forming a pulley having at least two grooves from a cup-shaped blank having an axially extending sidewall. The blank is crushed between axially closing dies and as the blank is being crushed, at least two rolls are translated radially into contact with the outer surface of the blank sidewall while the blank is rotated to form at least two annular pulley grooves in the sidewall of the blank. During such translation, a forming roll positioned between the axially closing dies and within the cup is radially shifted away from the longitudinal axis of the cup and into contact with the inner sidewall thereof to form a land between pulley groove pairs.

REFERENCES:
patent: 3754424 (1973-08-01), Costanzo
patent: 3831414 (1974-08-01), Haswell et al.
patent: 3852863 (1974-12-01), Killian et al.

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