Sheet Metal Bending Radius Calculation

Sheet metal bending parameters calculator.

Sheet metal bending radius calculation.

Cells on the right will output the desired values. Reflex angle a geometry term for an angle which is greater than 180 sharp bend when the radius of the bend is less than 63 of the material thickness seen commonly with hemming applications. Most sheet metal materials will conform to the calculations. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels.

A is the bending angle in the above equation so. This page also includes a link to a on line sheet metal bend allowance calculator. 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. The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal.

Radius of a bend is determined by the hardness and thickness of the metal. Sheet metal calculator bend allowance equations and calculator. Die edge radius in. Use this document to choose values that are both manufacturable and meet your needs.

It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. R bending bending with an inside radius greater than 8 times the material thickness. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. Learn more about bending.

Like previous scenarios let s start by calculating leg length 1. To calculate r which is the radius of the arc on the neutral axis we can use the following equation. Punch edge radius in. Ultimate tensile strength psi.

And by having t and the sheet thickness t we can calculate the k factor as follow. You just have to insert the characteristics of the sheet metal to be bent. The most important considerations when bending metal is the min. Radius metal will crack at the outside heel of the bend.

Bend radii minimum bend sizes. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. The mold line lengths are the distances measured to the outside mold line and are equal to the flange lengths plus the setback. This tool allows you to determine tonnage internal radius v die opening and minimum flange.

The values of the setback bend allowance and bend deduction can be calculated from the sheet thickness bend radius bend angle and k factor. To calculate the neutral axis distance from the inner face t we can subtract inside bend radius from r. There are four methods for finding bend allowances. The material thickness will be measured in decimal form not by the gauge number.