CROSS TAPER ROLLING METHOD Russian patent published in 1998 - IPC

FIELD: plastic metal working, namely, production of stepped parts. SUBSTANCE: method comprises steps of placing blank onto supporting rollers, applying deformation effort to blank by means of tool for successively forming annular groove of predetermined diameter and necking portion of preset length; changing reaction value caused by deformation effort along deformed portion of blank at process of forming necking portion from predetermined value to zero; deforming blank when its portions of initial diameter arranged at both sides of neck to be formed are supported by rollers. EFFECT: enhanced accuracy of part dimensions. 3 cl, 11 dwg