Sheet Metal Bending Corner Relief

Though bend relief lengths and widths vary between projects they all share a common goal.

Sheet metal bending corner relief.

The selected items can be a 3d solid with sheet metal features a face or a hard edge of the solid. Preventing tearing and part deformation during the bending process. To create a relief locally you can select one or two hard edges one or two bends or a bend and a hard edge. To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend.

One benefit of a bend relief is that it makes the part easier to produce. When bending a piece of sheet metal the residual stresses in the material will cause the sheet to springback slightly after the bending operation. The model must have three bends where the bend lines meet exactly at one point. In the corner relief propertymanager under scope select the sheet metal body to which to apply the corner relief.

Click corner relief sheet metal toolbar or insert sheet metal corner relief. You can also specify the relief size and whether to apply auto mitering. If it is ok for the metal to rip the minimum bend relief is zero. In sheet metal a bend relief is an incision cut along the sides of a planned bend.

In this article we are going to explore how the feature is applied to the part to create the appropriate relief. During the bending of sheet metal material around the bend tends to stretch and deform. Refer to the chart for values for folder as well as various press brake tooling combinations. You can add a corner relief to a single sheet metal body.

In general a minimum bend relief is equal to the material thickness plus the inside bend radius. In december 2013 we showed the new types of corner reliefs that were added with solidworks 2014. The final bend radius will be. Geometry of tooling imposes a minimum bend dimension.

For example if you make a partial flange as above using all the defaults the software makes relief cuts at the end of the bends as shown to the right. Bend relief synchronous sheet metal is pretty cool even cooler than just normal synchronous modeling if you ll excuse that word. Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend. If a 3d solid is selected the command recognizes the places where corner or bend reliefs are needed and creates them automatically.

The diagram shows one such mechanism. Under corners click collect all corners to list all corners in the sheet metal body. Creates a corner relief where three bends meet at one common point. Override sheet metal style settings for corner shape and relief the corner tab lets you override default parameters in the sheet metal styles dialog box.

Creates a corner relief where two bends meet. At the time we only explained how these reliefs worked. Due to this elastic recovery it is necessary to over bend the sheet a precise amount to achieve the desired bend radius and bend angle.