Calculate Radius Sheet Metal

Bend radii minimum bend sizes.

Calculate radius sheet metal.

This calculator predicts what the minimum bend radius should be to avoid chacking or orange peeling on the outside radius of the bend. A sharp bend will always be less than a minimum bend radius but a minimum bend radius does not need to be sharp. Sheet metal calculator bend allowance equations and calculator. Determine your minimum bend by measuring the distance from your closest feature i e.

The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal. Choose a bend radius that matches your minimum bend. Best way to calculate k factor in sheet metal is by reverse engineering. Whereas the outer surface is stretched.

Then input the bend angle to get the arc length bend allowance and bend deduction. Cells on the right will output the desired values. To calculate the neutral axis distance from the inner face t we can subtract inside bend radius from r. Here again a minimum bend radius is not necessarily the same thing as a sharp bend.

And by having t and the sheet thickness t we can calculate the k factor as follow. When sheet metal is bend the inside bending surface is compressed. A is the bending angle in the above equation so. A cutout or the edge of your flange to your bend.

To calculate r which is the radius of the arc on the neutral axis we can use the following equation. Then input leg length a and b to get the flat size of the sheet. Input material thickness and and inner radius to get the data of k factor y factor neutral layer. 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. Die edge radius in. As a result overall sheet length increases. Punch edge radius in.

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.