Means for making double groove pulleys

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

B - Operations, Transporting

21

H

113/65

B21H 1/00 (2006.01) B21D 53/26 (2006.01)

Patent

CA 1038699

MEANS FOR MAKING DOUBLE GROOVE PULLEYS ABSTRACT OF THE DISCLOSURE 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 longi- tudinal axis of the cup and into contact with the inner sidewall thereof to form a land between pulley groove pairs.

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