Calculation Of Bend Radius In Sheet Metal

This page also includes a link to a on line sheet metal bend allowance calculator.

Calculation of bend radius in sheet metal.

Cells on the right will output the desired values. This tool allows you to determine tonnage internal radius v die opening and minimum flange you just have to insert the characteristics of the sheet metal to be bent. 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. Choose a bend radius that matches your minimum bend.

The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. Therefore the bend allowance added to the flange lengths is equal to the total flat. Bending angles greater than 90 degrees. Sheet metal calculator bend allowance equations and calculator.

Thick you can use this formula. The bend allowance describes the length of the neutral axis between the bend lines or in other words the arc length of the bend. Most sheet metal materials will conform to the calculations. Discover all our calculation tools in the calculators section of the top menu.

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. Like previous scenarios let s start by calculating leg length 1. To calculate the neutral axis distance from the inner face t we can subtract inside bend radius from r.

For this material this is the minimum producible inside radius with air forming. You only have to insert interior angle flange lengths k factor inside radius and material thickness. A cutout or the edge of your flange to your bend. Determine your minimum bend by measuring the distance from your closest feature i e.

The bend allowance and bend deduction are two measures that relate the bent length of a piece of sheet metal to the flat length. The radius is produced as a percentage of the die opening regardless of the die style. A is the bending angle in the above equation so. The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal.

For the minimum bend radius for material less than 0.