B - Operations – Transporting – 21 – H
Patent
B - Operations, Transporting
21
H
26/174, 113/64
B21H 1/04 (2006.01)
Patent
CA 1056142
METHOD AND APPARATUS FOR FORMING A SHEAVE FROM A FLAT DISC OF METAL Abstract of the Disclosure A method and apparatus for upset forming a flat circular disc of metal having a central opening therein into a sheave of the type having an annular peripheral groove for receiving a wire line therein, the size and shape of said groove corresponding to the diameter of said wire line; the disc has two flat side portions separated by the width of said disc and an outer diameter slightly larger than the outer diameter of the sheave to be produced; the apparatus by which the method of the present invention is carried out includes a pair of rotatable holding members rotatable on a common horizontal axis, means for moving the holders axially relatively towards and away from each other where- by when the holders are moved axially towards each other, the holders will engage the disc therebetween; each holder is provided with a hub portion facing towards the other holder concentric with the common horizontal axis and adapted to be received in the central opening of said disc; a rotatable forming roller is rotatable on an axis substantially parallel with the common horizontal axis and movable in a direction substantially at right angles to the common horizontal axis and into contact with the outer periphery of said disc, the portion of said forming roller contacting the disc having a convex shape corresponding to the size and shape of said groove and contacting the disc on the outer periphery thereof at a position substantially equidistant from the flat side portions thereof; means are provided for rotating said rotatable holding members; means are provided for heating the flat side portions of said disc adjacent said periphery; and means are provided for urging said roller continuously against said periphery of said disc during the heating thereof until said roller forms said groove in the periphery of said disc.
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