CS253266B1 - Method of initial semi-products' position stabilization during rings rolling - Google Patents

Abstract

The invention relates to a method of stabilizing the position of workpieces in ring rolling, more particularly for the manufacture of rolling bearing rings. The workpiece 2 is so shaped, in relation to the rolling gap profile, that centring edges 5 of the workpiece 2 centre it only on one tool, i.e. mandrel 4 or roller 1. Deformation takes place only at such edges 5 in a first phase of the deforming operation. The deformation is so large that axial forces operating on the starting part cannot displace it axially. <IMAGE>

Description

WP B21H / 235487 / O

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Claims (2)

4 OBJECT OF THE INVENTION A method of stabilizing the position of the initial rolling pieces of the rings g of high precision of shape on the dark by the use of supporting rollers, wherein the initial stock is centered on the lateral surfaces of the caliber, characterized in that in the first rolling stage the centering blanks are formed to stabilize the axial position úvodníhopolotovaru. 2. A position stabilization method according to claim 1, wherein the centering edges are provided on the inner circumference and / or on the outer periphery of the initial stock ring. 253266