Bending Force In Sheet Metal

New bending force calculation method.

Bending force in sheet metal.

Proper lubrication is essential to controlling forces and has an effect on the process. The gauge inside radius die opening and minimum flange length are all interconnected through different equations and relationships the air bend force. The bending moment generated by the bending force in the deformation zone is see figure 1. As the sheet metal is bent the force needed will change.

Being able to read a bend force chart is crucial for any brake press operator and sheet metal engineer. Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape. Increasing the size of the die opening will decrease the necessary bending force. Commonly used equipment include box and pan brakes brake presses and other specialized machine presses typical products that are made like this are boxes such as electrical enclosures and rectangular ductwork.

The following bending force calculator should be used. Bending is a manufacturing process that produces a v shape u shape or channel shape along a straight axis in ductile materials most commonly sheet metal. The bending force can be calculated from the sheet thickness die opening bend length and the ultimate tensile strength of the material. The press force increases proportionally with the bending length and is 1 050 80 t at a maximum bending length of 16 m.

In punch and die operations the size of the die opening is a major factor in the force necessary to perform the bending. In order to bend an s235 sheet of metal with a thickness of 10 mm the press force needed on a die with an 80 mm opening will be 131 35 t. Please check the new method for calculating the bending force of a press brake machine. Bending is one of the most common sheet metal fabrication operations.

Die edge radius in. Punch edge radius in. From m 1 m 2 we get. Ultimate tensile strength psi.

V bending force calculator calculate the required force to bend a piece of sheet metal using v bending a process in which a v shaped punch presses the sheet into a v die. An air bend force chart or force chart breaks down a number of key components of sheet metal bending in an easy to reference format. To define the bend region and reduce the force required to bend a part out of sheet metal down to something you can handle without a brake press slots can be cut at the bending line to. If the width to thickness ratio v s is not equal to 9 and the diameter to width ratio is not equal to 0 16 the above calculator will no longer be applicable.