SIZING APPARATUS OF MULTI-ROLL SHEET STRAIGHTENING MACHINE AND SIZING METHOD OF SUCH MACHINE Russian patent published in 2006 - IPC B21D1/02 

FIELD: plastic metal working, namely multi-roll sheet straightening machines and methods for sizing them.

SUBSTANCE: apparatus includes set of upper and lower rolls mounted normally relative straightening direction; plate for measuring arranged between roll sets along their length. Said plate is provided with positioning unit for mounting it to preset position relative to rolls and strain gages pickups for measuring elastic deformations. Said pickups are mounted in several cross rows arranged vertically along the same line with one of rolls at plate side opposite relative to roll. Method comprises steps of mounting plate with pickups in sheet straightening machine at predetermined position by means of positioning members while vertically arranging each row of pickups along the same line with roll; mutually approaching roll sets by means of units for adjusting clamp while creating clamping effort acting upon said plate; measuring clamping effort with use of said pickups.

EFFECT: improved tuning of sheet straightening machine due to possibility of sizing it under load, enhanced adjustment of pressure rollers, corrected position of straightening rollers in cross direction.

10 cl, 9 dwg