Second, the press brake manufacturers list the corresponding values of the die width V and the inner radius r of the bending workpiece on the bending force parameter table. Here take the width to thickness ratio V/S = 9. In free bending, the opening width V of the lower die selected is 8 to 10 times the sheet thickness S. The derivation of the bending force calculation formula and the two additional parameter conditions are described below.įirst, there are such recommendations in the product instruction manual. K-the width of the horizontal projection of the bending deformation zone.

The derivation process and applicable scope of the bending force calculation formulaįigure 1 is a schematic working diagram when the sheet is bent. These two formulas are also transplanted from different product brochures, and there is no data to prove their accuracy. The bending force parameter table recommended by the manufacturer is also calculated according to the above formula. However, there is no systematic discussion on the calculation of the bending force.Īt present, there are roughly two types of bending force calculation formulas recommended in the product manuals of various press brake manufacturers. In recent years, the press brake machine has been widely used in various industries, and the processing range of the bending machine is also expanding. New methods and steps for calculating bending forces.

The derivation process and applicable scope of the bending force calculation formula.

Radius vs steel faith