VERFAHREN UND VORRICHTUNG ZUM BETRIEB VON ROTIERENDEN ANLAUFSCHEREN

摘要

A switch gearing (8) is arranged between the shears drive (7) and the drive motor (9). The switch gearing allows a variety of operations. The shears are started with a low drive inertia of about 0.1 Mn for a short time span of about 10 ms to eliminate play in the gear and clutch. The shears are accelerated at a constant rate with maximum rate of amplitude change and acceleration inertia up to the nominal shear speed for all the rolled material speeds and cross sections, where the shear speed is faster than the rate of material travel. The cutting begins shortly before the nominal shear speed has been achieved, to a time point where the shear speed is higher than the rolled material speed. The speed at the shear circumference is monitored automatically during the cutting, to maintain an optimum shear overspeed. The assembly may comprise a rigid rotating clutch (10,11) for the connections between the switch gearing the shears drive and the drive motor.