Calculation Of Bend Radius In Sheet Metal

Material to the inside of this line ought to compress whereas the material on the outside of it should expand.

Calculation of bend radius in sheet metal. 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. Sheet metal calculator bend allowance equations and calculator. Use the known k factor and the known inner bending radius to calculate the bending radius of the neutral line. Bend radii minimum bend sizes.

Therefore the bend allowance added to the flange lengths is equal to the total flat. You only have to insert interior angle flange lengths k factor inside radius and material thickness. And by having t and the sheet thickness t we can calculate the k factor as follow. Ultimate tensile strength psi.

To calculate r which is the radius of the arc on the neutral axis we can use the following equation. Use this document to choose values that are both manufacturable and meet your needs. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. Die edge radius in.

The white dashed line on the part shown above represents the neutral axis which is the theoretical point in the material that does not change during the course of forming. Most sheet metal materials will conform to the calculations. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. Discover all our calculation tools in the calculators section of the top menu.

As this happens you gain a small amount of total length in your part. 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. 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. This page also includes a link to a on line sheet metal bend allowance calculator. When the sheet metal is put through the process of bending the metal around the bend is deformed and stretched. To calculate the neutral axis distance from the inner face t we can subtract inside bend radius from r.

Cells on the right will output the desired values. The bend allowance and bend deduction are two measures that relate the bent length of a piece of sheet metal to the flat length.