Bend Relief Sheet Metal

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

Bend relief sheet metal.

In general a minimum bend relief is equal to the material thickness plus the inside bend radius. Select a hard edge bend face flange face or 3d solid entire model. Type smreliefcreate in the command bar. Parent topic using sheet metal tools search corner reliefs and bend transitions in the solidworks knowledge base.

The gap between the bend and surrounding material allows us to shape the sheet in the press brake cleanly eliminating cracking and tearing. Bend relief and collars near pierced areas strengthen sheet metal parts. You are also able to select to extend the bend relief in the opposite direction in the case of a flange for example illustrations below. Geometry of tooling imposes a minimum bend dimension.

Enter relief size by bend radius ratio or force bend reliefs auto. As per sheet metal design thumb rules the depth of bend relief should be greater than or equal to the inside bend radius of the bend and the width of the bend relief should be the same as the sheet metal thickness or more. One benefit of a bend relief is that it makes the part easier to produce. 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.

Sheet metal bend relief modify a bend relief the small cut made where the bend end meets a free edge and by specifying a shape and either a depth and relief width scale or specific bend relief depth. Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend. A bend relief creates space between the bent and unbent surfaces so that the edge of the sheet metal is perpendicular to the bend itself. The diagram shows one such mechanism.

Improper bending of sheet metal can cause material flow problems in soft material and fracturing in hard materials. To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend. If it is ok for the metal to rip the minimum bend relief is zero. Choose create relief in the sheet metal menu.

Select an item see the note below. Lack of proper bend reliefs may cause tearing of the material due to localized stresses. This article looks at two different tips associated with ensuring you have high quality sheet metal in finished products. The flange which does not have relief will result in a greater amount of distortion or tearing of the adjacent material.

Use the corner relief propertymanager to apply corner treatments to a folded sheet metal body that persist in the flattened state.