METHOD OF BENDING PART EDGE AND DEVICE TO THIS END Russian patent published in 2010 - IPC B21D39/08 

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and can be used for bending car body parts edges. Several rolls act consecutively on workpiece, each roll reciprocating in its angular sector. Total amount of reciprocation corresponds to bending angle. After roll comes in contact with the part and prior to bending, rolls are, first, penetrate into part flanged edge to its depth to form lead sections on part edge. Device is used that consists of case, levers arranged on fixed axle to reciprocate about said axle driven on by oscillation generator. Every lever has roller arranged to run on the axle fitted in appropriate lever. Oscillation generator is made up of crank mechanism with shaft running in bearings fitted in the case via taper gear drive interacting with the shaft of motor mounted on the case. Crank mechanism shaft has cams, the number corresponding to that of levers, and slides each furnished with through bore. Cranks feature equal eccentricity and are arranged at equal angle to each other to run in said through bores of aforesaid slides fitted, in their turn, in groves made in levers.

EFFECT: higher efficiency and quality of bending.

3 cl, 7 dwg