Sheet Metal Bending Radius Calculation

Sheet metal calculator bend allowance equations and calculator.

Sheet metal bending radius calculation.

Learn more about bending. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. You only have to insert interior angle flange lengths k factor inside radius and material thickness. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.

Radius metal will crack at the outside heel of the bend. To calculate r which is the radius of the arc on the neutral axis we can use the following equation. There are four methods for finding bend allowances. Ultimate tensile strength psi.

This tool allows you to determine tonnage internal radius v die opening and minimum flange. This page also includes a link to a on line sheet metal bend allowance calculator. You just have to insert the characteristics of the sheet metal to be bent. When bends are made smaller than the required min.

A is the bending angle in the above equation so. The material thickness will be measured in decimal form not by the gauge number. The mold line lengths are the distances measured to the outside mold line and are equal to the flange lengths plus the setback. The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal.

And by having t and the sheet thickness t we can calculate the k factor as follow. 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. To calculate the neutral axis distance from the inner face t we can subtract inside bend radius from r. The most important considerations when bending metal is the min.

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. Like previous scenarios let s start by calculating leg length 1. Most sheet metal materials will conform to the calculations. Punch edge radius in.

Radius of a bend is determined by the hardness and thickness of the metal. R bending bending with an inside radius greater than 8 times the material thickness. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. Die edge radius in.

The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. Sheet metal bending parameters calculator. Bending angles greater than 90 degrees. Use this document to choose values that are both manufacturable and meet your needs.