ROLL TYPE SHEET BENDING MACHINE Russian patent published in 2001 - IPC

FIELD: plastic metal working, namely bending sheet metal by drawing it between rolls. SUBSTANCE: machine includes frame in which each of two lateral rolls is mounted in such a way that its end bearings are supported by levers having common rotation axle in the form of concentrically arranged hollow rods. Drives for rotating levers with rolls may be electromechanical ones. One lever of respective lateral roll is rigidly joined with rod by means of key. Second lever of respective lateral roll has curvilinear grooves providing possibility for shifting roll around it rotation axis. Mechanism for controlling mutual parallelism of rolls is in the form of members embracing second lever of respective lateral roll; said mechanism is rigidly joined by means of key with rod and through curvilinear grooves - with second lever. Embracing members are in the form of flanges or brackets. Such construction allows to control mutual parallelism of rolls with predetermined accuracy degree. EFFECT: enhanced quality of bent products. 2 cl, 3 dwg