Method of manufacturing a V-pulley

Details Method of manufacturing a V-pulley Method of manufacturing a V-pulley

1996-04-15

1997-07-29

Echols, P. W.

Metal working

Method of mechanical manufacture

Pulley making

29892, 72 68, B21K 142

Patent

active

056511817

ABSTRACT:
A ring-shaped flange is molded at one end of a cylindrically-shaped body in a flange molding process. In an edge surface molding process performed after the flange molding process, a cylindrically-shaped body thinner than a hot rolled steel plate, a truncated cone-shaped connecting portion extending in an axial direction from the body, and a smallest diameter portion thinner than the body at the other end of the body are molded. Next, in a slotting process, a slotting punch is driven in from the slanting surface of the connected portion to form the other guide-molded portion, and in a trimming process, the flange is trimmed off in order to remove the unnecessary volume to form a poly V-pulley from the work. In the above-described processes, even if the sash-shaped hot rolled steel plate has an uneven thickness, uneven thicknesses or fluctuations in precision of the hot rolled steel plate can be corrected in the middle of the press process, so that the rotation of the poly V-pulley can be prevented from fluctuating.

REFERENCES:
patent: 5123166 (1992-06-01), Kanemitsu et al.
patent: 5448832 (1995-09-01), Kanemitsu et al.

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