Sheet Metal Bending Radius Calculation

Bending is one of the most common sheet metal fabrication operations.

Sheet metal bending radius calculation.

It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. The values of the setback bend allowance and bend deduction can be calculated from the sheet thickness bend radius bend angle and k factor. Use this document to choose values that are both manufacturable and meet your needs. This is done through the application of force on a workpiece.

Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape. The white dashed line on the part shown above represents the neutral axis which is the theoretical point in the material that does not change during the course of forming. With this free online tool we quickly get the sheet metal bend deduction and therefore the sheet metal blank initial flat length from the finished part measurements. Learn more about bending.

This page also includes a link to a on line sheet metal bend allowance calculator. A is the bending angle in the above equation so. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal.

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. When the sheet metal is put through the process of bending the metal around the bend is deformed and stretched. The force must exceed the material s yield strength to achieve a plastic deformation. 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.

As this happens you gain a small amount of total length in your part. And by having t and the sheet thickness t we can calculate the k factor as follow. Discover all our calculation tools in the calculators section of the top menu. You only have to insert interior angle flange lengths k factor inside radius and material thickness.

Bend radii minimum bend sizes. To calculate r which is the radius of the arc on the neutral axis we can use the following equation. Sheet metal calculator bend allowance equations and calculator. Most sheet metal materials will conform to the calculations.

Die edge radius in. To calculate the neutral axis distance from the inner face t we can subtract inside bend radius from r. Material to the inside of this line ought to compress whereas the material on the outside of it should expand. Cells on the right will output the desired values.