Force Required To Bend Sheet Metal Foldeing

The relationship between the v opening and the required tonnage is straight forward the larger the v opening the less tonnage is required to bend the metal.

Force required to bend sheet metal foldeing.

This tool allows you to determine tonnage internal radius v die opening and minimum flange you just have to insert the characteristics of the sheet metal to be bent. When the sheet metal is put through the process of bending the metal around the bend is deformed and stretched. The die ratio may be entered to calculate the die opening which is typically 6 to 18 times the sheet thickness. Discover all our calculation tools in the calculators section of the top menu.

A punch exerts force at the correct spot bending the sheet metal between. As a result the wipe die also determines the bend s inner radius. ε y σy bending force requirement punch workpiece t die w force t sheet thickness w width of die opening l total length of bend into the page uts ultimate tensile. Understanding the bend allowance and consequently the bend deduction of a part is a crucial first step to understanding how sheet metal parts are fabricated.

The sheet metal is supported by two surfaces a certain distance apart. Stress distribution through the thickness of the part s s y y y y y. The strength of the table is the force required to bend sheet metal up to 1 m in length. As this happens you gain a small amount of total length in your part.

The total strength of bending of a sheet is directly proportional to the length of bending. 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. Air bending is a simple method of creating a bend without the need for lower die geometry. The relationship is inversely proportional so if the v opening is doubled the tonnage will be halved.

The slack between the wipe die and the punch plays an important role in getting a good result. The bending force can be calculated from the sheet thickness die opening bend length and the ultimate tensile strength of the material. F 2 ybh2 4 fl 4 m max f bh2y l l σ ε e. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels.