Offset Bending Sheet Metal

We are going to review three bending scenarios with three different bending angles.

Offset bending sheet metal.

The horizontal offset tool is designed to offset the material by one material thickness see figure 1. When sheet metal is bent it stretches in length. Offset tooling there are two sub groups of offset tooling. 60 90 and 120 and we will calculate k factor bend allowance and bend deduction for them.

The resulting number is the offset depth as measured from the material surface. This is done through the application of force on a workpiece. Consider a sheet with a 20 mm thickness and a length of 300 mm as shown in figure 1. This type of bend is also commonly referred to as a jog.

There is no particular rule for how much the material should be weakened but as a rule of. The two basic forms of offset tooling are spring up and horizontal. Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape. Offset tooling allows two v bends to be formed closer together than regular press brake dies would allow.

Up spring or up sweep and the horizontal. The upspring tool is used to place two bends close together bends that are normally too close for conventional forming methods. The sheet metal bending height should be at least 2 times the thickness of the sheet metal plus the bending radius that is h 2t r. Sheet metal bending methods design tips k factor bending is one of the most common sheet metal fabrication operations.

The bend deductionis the amount the sheet metal will stretch when bent as measured from the outside edges of the bend. The formed bend radius is dependent upon the dies used the material properties and the material thickness. The bend radiusrefers to the inside radius. This creates a z shaped profile in the sheet metal.