Rolling mill

Metal deforming – With use of self regulating control system utilizing... – Metal deforming by use of roller or roller-like tool element

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Details

72245, 72249, B21B 3706, B21B 3500

Patent

active

046140999

ABSTRACT:
Upper and lower reducing rolls are mounted within a mill housing for rotation about their axes and for parallel movement. Actuating cylinders force the upper reducing roll downward toward the lower reducing roll to effect a separation force on a workpiece that is placed therebetween. Four direct drive motors, one directly coupled to each end of the upper and lower reducing rolls, counter-rotate the reducing rolls to drive the workpiece therebetween. The motors are synchronized within a close tolerance of a set speed to prevent torsion of one end of the reducing rolls relative to the opposite end. Preferably, the rolling mill includes closely enclosed backing rolls engaging the reducing rolls to prevent deflection of the reducing rolls under load. This allows the rolling mill to produce a flat workpiece over a wide range of separation forces by means of cylindrical reducing rolls. The rolling mill is particularly suited for specialized rolling because it maintains the crystal structure of the workpiece and permits greater separation forces to be applied than with other rolling mills.

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patent: 4438376 (1984-03-01), Varnovitsky

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