Bend Deduction Sheet Metal

The formed bend radius is dependent upon the dies used the material properties and the material thickness.

Bend deduction sheet metal.

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. Sheet metal bend deduction chart pdf sheet metal bend deduction chart excel conclusion. The bend deduction of means that the material is expected to stretch by that amount during the course of bending. Cells on the right will output the desired values.

You only have to insert interior angle flange lengths k factor inside radius and material thickness. Bend deductions are the first and more critical aspects when working with fabricated sheet metal. Should be subtracted from the flat pattern so the formed part arrives at the desired dimensions. This is simulated on the part shown above by the section shown in red.

If missed it will wreak havoc on your formed parts done well and you ll have a precise measurement you and your clients will be happy with. The bend deduction is the amount the sheet metal will stretch when bent as measured from the outside edges of the bend. As this happens you gain a small amount of total length in your part. The u punch forms a u shape with a single punch.

You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. The material thickness will be measured in decimal form not by the gauge number. The bend radius refers to the inside radius.