Calculation Of Bend Radius In Sheet Metal

Sheet metal calculator bend allowance equations and calculator.

Calculation of bend radius in sheet metal.

The bend allowance describes the length of the neutral axis between the bend lines or in other words the arc length of the bend. If you are working with a material thickness of 0 100 in multiply that by 0 63 to get a minimum inside bend radius of 0 063 in. Thick you can use this formula. 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.

Determine your minimum bend by measuring the distance from your closest feature i e. This page also includes a link to a on line sheet metal bend allowance calculator. For the minimum bend radius for material less than 0. For this material this is the minimum producible inside radius with air forming.

A is the bending angle in the above equation so. To calculate the neutral axis distance from the inner face t we can subtract inside bend radius from r. Like previous scenarios let s start by calculating leg length 1. Most sheet metal materials will conform to the calculations.

50 tensile reduction of area percentage 1 mt 0 1 in these equations you use the percentage as a whole number not a decimal. A cutout or the edge of your flange to your bend. The radius is produced as a percentage of the die opening regardless of the die style. Discover all our calculation tools in the calculators section of the top menu.

The bend allowance and bend deduction are two measures that relate the bent length of a piece of sheet metal to the flat length. Therefore the bend allowance added to the flange lengths is equal to the total flat. If you have any questions or want to discuss your design contact us. 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.

Bending angles greater than 90 degrees. To calculate r which is the radius of the arc on the neutral axis we can use the following equation. Choose a bend radius that matches your minimum bend. And by having t and the sheet thickness t we can calculate the k factor as follow.

You only have to insert interior angle flange lengths k factor inside radius and material thickness.