Calculate Radius Sheet Metal

When sheet metal is bend the inside bending surface is compressed.

Calculate radius sheet metal. To calculate r which is the radius of the arc on the neutral axis we can use the following equation. Best way to calculate k factor in sheet metal is by reverse engineering. Die edge radius in. Cells on the right will output the desired values.

Punch edge radius in. Whereas the outer surface is stretched. 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. And by having t and the sheet thickness t we can calculate the k factor as follow.

Determine your minimum bend by measuring the distance from your closest feature i e. To calculate the neutral axis distance from the inner face t we can subtract inside bend radius from r. Sheet metal calculator bend allowance equations and calculator. Ultimate tensile strength psi.

Bend radii minimum bend sizes. Then input the bend angle to get the arc length bend allowance and bend deduction. You only have to insert interior angle flange lengths k factor inside radius and material thickness. The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal.

This change in sheet length depends on the position of neutral axis or k factor. This page also includes a link to a on line sheet metal bend allowance calculator. Then input leg length a and b to get the flat size of the sheet. Here again a minimum bend radius is not necessarily the same thing as a sharp bend.

A is the bending angle in the above equation so. Choose a bend radius that matches your minimum bend. As a result overall sheet length increases. Input material thickness and and inner radius to get the data of k factor y factor neutral layer.

This calculator predicts what the minimum bend radius should be to avoid chacking or orange peeling on the outside radius of the bend.