Calculation Of Bend Radius In Sheet Metal

Determine your minimum bend by measuring the distance from your closest feature i e.

Calculation of bend radius in sheet metal.

The radius is produced as a percentage of the die opening regardless of the die style. For the minimum bend radius for material less than 0. Bending angles greater than 90 degrees. 50 tensile reduction of area percentage 1 mt 0 1 in these equations you use the percentage as a whole number not a decimal.

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. 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. The bend allowance and bend deduction are two measures that relate the bent length of a piece of sheet metal to the flat length.

This page also includes a link to a on line sheet metal bend allowance calculator. Sheet metal calculator bend allowance equations and calculator. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal.

A is the bending angle in the above equation so. Thick you can use this formula. Choose a bend radius that matches your minimum bend. A cutout or the edge of your flange to your bend.

And by having t and the sheet thickness t we can calculate the k factor as follow. Like previous scenarios let s start by calculating leg length 1. Discover all our calculation tools in the calculators section of the top menu. If you have any questions or want to discuss your design contact us.

You only have to insert interior angle flange lengths k factor inside radius and material thickness. To calculate r which is the radius of the arc on the neutral axis we can use the following equation. Most sheet metal materials will conform to the calculations. For this material this is the minimum producible inside radius with air forming.

Therefore the bend allowance added to the flange lengths is equal to the total flat.