TUBE COLD ROLLING MILL ROTATION AND FEED MECHANISM Russian patent published in 2007 - IPC B21B21/00 B21B21/04 B21B21/06 

FIELD: equipment of tube cold rolling mills.

SUBSTANCE: rotation and feed mechanism includes housing where are arranged: unit for converting continuous rotation to intermittent one, feed and rotation chuck, rotation chuck, each chuck has inner and outer spindles and clamp for blank with two inserts. One insert is driven from eccentric shaft with pinion. Mechanism also includes leverage systems for reciprocation motion of feed and rotation chuck; gear transmissions. Each chuck is provided with additional body mounted in outlet end of spindle for placing eccentric shaft with one insert of clamp and lever which is mounted in rocking axle and has surfaces for supporting second insert of blank clamp. Said lever is forced to additional body with the aid of elastic member creating controlled effort. Wedge for regulating position of second insert in radial direction is arranged between supporting surfaces of second insert and of lever. Gear ratio values of gear transmissions of rotation drive of each chuck are selected in such a way that for one rolling cycle (doubled stroke of stand) eccentric shaft may perform one revolution.

EFFECT: enhanced operational reliability of mechanism, improved quality of rolled tubes due to stable feed of blank at rolling process and due to possibility for controlling time period of holding blank in each chuck for one rolling cycle.

3 dwg