Radius Compensation in Lateral Bending of L-Shape Plate Considering Rollers Deflection

Lateral bending of L-shape plate is a novel forming technology to manufacture flange-like parts from angle bar or L-shape plate. However, the inevitable rollers deflection induced by rolling force leads to significant decrease in radius prediction accuracy of the flange products. Therefore, the radius compensation is implemented through adjusting forming parameters in order to obtain a flange product with the designed radius. In the paper, the rolling force and rollers deflection are solved with considering the workpiece-roller interaction; on this basis, a radius compensation scheme is proposed and evaluated. The results show that the predicted radii deviate from the desired ones less than 7.22%.