SHEARS FOR SHEET MATERIALS Russian patent published in 1994 - IPC

FIELD: metal pressure forming. SUBSTANCE: the stationary cutter 1 is mounted on the casing 2 with the aid of the vertical screw 3 and two horizontal thrust adjustable screws 4. The movable cutter 5 is rotatably mounted on the slide 6 and on the driven eccentric shaft 7, mounted in the casing 2 with possibility of rotation. Shearing edges of the movable cutter are in the form of arcs, in pairs arranged in working planes of the movable cutter and being symmetrical relative to a plane, passing through axis of the slide 6 and the eccentric shaft 7. Upon rotation of the eccentric shaft 7 the movable cutter 5 performs (relative to the stationary cutter 1) complex motion of rolling type shearing, dividing the sheet material, placed between the cutters 1 and 5 at constant shear angle and with the same overlapping. EFFECT: enhanced efficiency. 1 cl, 2 dwg