Sheet Metal Bend Relief Calculator

Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend.

Sheet metal bend relief calculator. Note that the bend angle is the excluded angle not the included angle. Sheet metal calculator bend allowance equations and calculator. The bend allowance describes the length of the neutral axis between the bend lines or in other words the arc length of the bend. This page also includes a link to a on line sheet metal bend allowance calculator.

Although it is an option for calculating a bend in some cad programs such as solid works it is not often referred to in the actual manufacturing process since. You only have to insert interior angle flange lengths k factor inside radius and material thickness. Sheet metal bend allowance calculator determines the bend allowance amount of metal to be added to the total layout when forming sheet metal. The bend allowance is the amount of the neutral axis that bends.

In the example above it is indicated by a dashed blue line. Our sheet metal fabrication process unlike traditional sheet metal shops we have infinite capacity and an easy to use online quoting system ensuring on time shipment every time whether you need a single part or 500 parts. The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal. You also have access to our team of knowledgeable engineers to optimize part designs and user friendly online resources.

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. In the example above it is indicated by a dashed blue line. Geometry of tooling imposes a minimum bend dimension. Most sheet metal materials will conform to the calculations.

It simply processes these variables through the equations we will discuss below. Therefore the bend deduction equals the difference between the mold line lengths and the total flat length. The bend deduction sometimes called the bend compensation describes how much the outside of the sheet has been stretched. Refer to the chart for values for folder as well as various press brake tooling combinations.

Below is our simple bend allowance calculator it works by inputing the material thickness bend angle inside radius and k factor. The bend allowance added to the flange lengths is equal to the total flat length of the part. Cells on the right will output the desired values. Most sheet metal materials will conform to the calculations.