Calculate Radius Sheet Metal

Input material thickness and and inner radius to get the data of k factor y factor neutral layer.

Calculate radius sheet metal.

This page also includes a link to a on line sheet metal bend allowance calculator. Cells on the right will output the desired values. Here again a minimum bend radius is not necessarily the same thing as a sharp bend. 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 r which is the radius of the arc on the neutral axis we can use the following equation. And by having t and the sheet thickness t we can calculate the k factor as follow. A sharp bend will always be less than a minimum bend radius but a minimum bend radius does not need to be sharp. Choose a bend radius that matches your minimum bend.

Then input the bend angle to get the arc length bend allowance and bend deduction. Bend radii minimum bend sizes. When sheet metal is bend the inside bending surface is compressed. This calculator predicts what the minimum bend radius should be to avoid chacking or orange peeling on the outside radius of the bend.

This change in sheet length depends on the position of neutral axis or k factor. Sheet metal calculator bend allowance equations and calculator. You only have to insert interior angle flange lengths k factor inside radius and material thickness. Most sheet metal materials will conform to the calculations.

Punch edge radius in. As a result overall sheet length increases. Die edge radius in. Then input leg length a and b to get the flat size of the sheet.

Whereas the outer surface is stretched. Best way to calculate k factor in sheet metal is by reverse engineering. Ultimate tensile strength psi. To calculate the neutral axis distance from the inner face t we can subtract inside bend radius from r.

The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal.