Sheet Metal Bending Radius Calculation

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.

Sheet metal bending radius calculation.

Learn more about bending. When bends are made smaller than the required min. You just have to insert the characteristics of the sheet metal to be bent. There are four methods for finding bend allowances.

Sheet metal calculator bend allowance equations and calculator. The mold line lengths are the distances measured to the outside mold line and are equal to the flange lengths plus the setback. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. 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. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. Ultimate tensile strength psi. A is the bending angle in the above equation so.

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. The material thickness will be measured in decimal form not by the gauge number. And by having t and the sheet thickness t we can calculate the k factor as follow. Most sheet metal materials will conform to the calculations.

This page also includes a link to a on line sheet metal bend allowance calculator. Like previous scenarios let s start by calculating leg length 1. To calculate the neutral axis distance from the inner face t we can subtract inside bend radius from r. The values of the setback bend allowance and bend deduction can be calculated from the sheet thickness bend radius bend angle and k factor.

The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal. Bend radii minimum bend sizes. Punch edge radius in. Radius of a bend is determined by the hardness and thickness of the metal.

Die edge radius in. You only have to insert interior angle flange lengths k factor inside radius and material thickness. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. The most important considerations when bending metal is the min.

Sheet metal bending parameters calculator. Bending angles greater than 90 degrees. R bending bending with an inside radius greater than 8 times the material thickness. Use this document to choose values that are both manufacturable and meet your needs.