Bend Relief Sheet Metal

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.

Bend relief sheet metal.

To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend. Refer to the chart for values for folder as well as various press brake tooling combinations. Grain structure in the metal sheet is critical for avoiding cracks in sheet metal parts with lugs or tabs that are cut on. 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.

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. Improper bending of sheet metal can cause material flow problems in soft material and fracturing in hard materials. Select an item see the note below. Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend.

Type smreliefcreate in the command bar. The flange which does not have relief will result in a greater amount of distortion or tearing of the adjacent material. 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.

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. In general a minimum bend relief is equal to the material thickness plus the inside bend radius. 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.

Select a hard edge bend face flange face or 3d solid entire model. If it is ok for the metal to rip the minimum bend relief is zero. 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. Bend relief and collars near pierced areas strengthen sheet metal parts.

Click the create relief tool button on the sheet metal ribbon tab. Enter relief size by bend radius ratio or force bend reliefs auto. Synchronous sheet metal is pretty cool even cooler than just normal synchronous modeling if you ll excuse that word. One benefit of a bend relief is that it makes the part easier to produce.

Geometry of tooling imposes a minimum bend dimension.