Sheet Metal Bending Radius Calculation

There are four methods for finding bend allowances.

Sheet metal bending radius calculation. Sheet metal calculator bend allowance equations and calculator. Die edge radius in. You just have to insert the characteristics of the sheet metal to be bent. Bending angles greater than 90 degrees.

The material thickness will be measured in decimal form not by the gauge number. Learn more about bending. Punch edge radius in. Ultimate tensile strength psi.

When bends are made smaller than the required min. Radius of a bend is determined by the hardness and thickness of the metal. To calculate the neutral axis distance from the inner face t we can subtract inside bend radius from r. Bend radii minimum bend sizes.

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

And by having t and the sheet thickness t we can calculate the k factor as follow. You only have to insert interior angle flange lengths k factor inside radius and material thickness. Like previous scenarios let s start by calculating leg length 1. The values of the setback bend allowance and bend deduction can be calculated from the sheet thickness bend radius bend angle and k factor.

Sheet metal bending parameters calculator. 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. Most sheet metal materials will conform to the calculations.

The most important considerations when bending metal is the min. Cells on the right will output the desired values. Radius metal will crack at the outside heel of the bend. This tool allows you to determine tonnage internal radius v die opening and minimum flange.

You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. Use this document to choose values that are both manufacturable and meet your needs. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. R bending bending with an inside radius greater than 8 times the material thickness.