Sheet Metal Bending Chart

Refer to the chart for values for folder as well as various press brake tooling combinations.

Sheet metal bending chart.

Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape. Geometry of tooling imposes a minimum bend dimension. The force must exceed the material s yield strength to achieve a plastic deformation. V die width is 6 8 times the plate thickness.

An air bend force chart or force chart breaks down a number of key components of sheet metal bending in an easy to reference format. The diagram shows one such mechanism. Bend forming 0 l a b 0 43t t thickness deduction 0 43t. As this happens you gain a small amount of total length in your part.

The gauge inside radius die opening and minimum flange length are all interconnected through different equations and relationships the air bend force. Calculate unfold size with bend allowance chart. Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend. 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.

3d cad files are converted into machine code which controls a machine to precisely cut and form the sheets into the final part. Sheet metal fabrication is the process of forming parts from a metal sheet by punching cutting stamping and bending. Being able to read a bend force chart is crucial for any brake press operator and sheet metal engineer. L unfold length a outside size b outside size k k factor none 90 bend unfold according to the neutral layer the distance from neutral to sheet inner side is t 3 inner r can refer to the above chart.