Method for manufacturing poly-v pulleys

Details Method for manufacturing poly-v pulleys Method for manufacturing poly-v pulleys

B - Operations, Transporting

21

H

26/174

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

Patent

CA 1137286

Abstract of the disclosure A method for manufacturing a poly-V pulley compris- ing pre-forming the flange wall of a cup-shaped blank to have a corrugated cross section having a series of valleys formed around the outer circumference thereof, axially compressing the corrugated flange wall of the blank, and pressing a rotary forming roller against valleys formed around the outer circumference of the flange wall to form each of valleys to a predetermined V-groove. The axially compressing process is carried out keeping respective outer circumference of axially movable auxiliary forming rollers inserted into their corresponding valleys formed around the outer circum- ference of the flange wall of the blank.

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