Crown adjustment system drives on Sendzimir cold rolling cluster mills - and wedge adjustment drives to produce crowned and tapered roll gap

摘要

A cluster mill having upper and lower backing shafts and rack and gear driven saddles, includes a drive system having a motor, jack and a rack and pinion which are used to rotate a shaft connected to at least some of the saddles. The system provides a synchronised drive to move the saddles from a parallel to a profiled roll gap. A further synchronised drive includes a motor, jack and a pivoting assembly which is connectd to all of the saddles via links so as to synchronously move the saddles from a parallel roll gap posn. to a tapered roll gap posn. The synchronised drives are operable separately or simultaneously. Used in odd rolling cluster mills of the sendsimir type. The rotation of the crown adjustment eccentrics can be synchronised to control their rotation to produce tapered and/or crowned roll gap profiles. Separate or simultaneous operation of the synchronous drives obtains any desired combination of taper crown in the roll gap.