Sheet Metal Bend Line Calculator

When the sheet metal is put through the process of bending the metal around the bend is deformed and stretched.

Sheet metal bend line calculator.

As this happens you gain a small amount of total length in your part. Understanding the bend allowance and consequently the bend deduction of a part is a crucial first step to understanding how sheet metal parts are fabricated. The bend deduction sometimes called the bend compensation describes how much the outside of the sheet has been stretched. Most sheet metal materials will conform to the calculations.

Therefore the bend deduction equals the difference between the mold line lengths and the total flat length. Sheet metal bend allowance calculator determines the bend allowance amount of metal to be added to the total layout when forming sheet metal. You only have to insert interior angle flange lengths k factor inside radius and material thickness. In the example above it is indicated by a dashed blue line.

The following illustration shows the equation calculation for determining the bend line to mold allowance when forming sheet metal. 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. The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal. As this happens you gain a small amount of total length in your part.

In the example above it is indicated by a dashed blue line. Cells on the right will output the desired values. Most sheet metal materials will conform to the calculations. The bend allowance is the amount of the neutral axis that bends.

The values of the setback bend allowance and bend deduction can be calculated from the sheet thickness bend radius bend angle and k factor. Manufacturing knowledge menu sheet metal knowledge sheet metal manufacturing and services. Most sheet metal materials will conform to the calculations. Most sheet metal materials will conform to the calculations.

The mold line lengths are the distances measured to the outside mold line and are equal to the flange lengths plus the setback. Learn more about bending. 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. This page also includes a link to a on line sheet metal bend allowance calculator.

This page also includes a link to a on line calculator. Understanding the bend allowance and consequently the bend deduction of a part is a crucial first step to understanding how sheet metal parts are fabricated. The bend allowance added to the flange lengths is equal to the total flat length of the part.