Calculate Radius Sheet Metal

A is the bending angle in the above equation so.

Calculate radius sheet metal.

Whereas the outer surface is stretched. This change in sheet length depends on the position of neutral axis or k factor. Determine your minimum bend by measuring the distance from your closest feature i e. Punch edge radius in.

Die edge radius in. Bend radii minimum bend sizes. Best way to calculate k factor in sheet metal is by reverse engineering. Sheet metal calculator bend allowance equations and calculator.

Cells on the right will output the desired values. This calculator predicts what the minimum bend radius should be to avoid chacking or orange peeling on the outside radius of the bend. When sheet metal is bend the inside bending surface is compressed. A cutout or the edge of your flange to your bend.

Most sheet metal materials will conform to the calculations. You only have to insert interior angle flange lengths k factor inside radius and material thickness. Then input leg length a and b to get the flat size of the sheet. To calculate the neutral axis distance from the inner face t we can subtract inside bend radius from r.

To calculate r which is the radius of the arc on the neutral axis we can use the following equation. A sharp bend will always be less than a minimum bend radius but a minimum bend radius does not need to be sharp. Then input the bend angle to get the arc length bend allowance and bend deduction. The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal.

Ultimate tensile strength psi. Choose a bend radius that matches your minimum bend. This page also includes a link to a on line sheet metal bend allowance calculator. As a result overall sheet length increases.

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.