Sheet Metal Bending Corner Relief

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.

Sheet metal bending corner relief.

The bend radius you select may not be available if the geometry of the part will not allow us to bend with the specific tooling required to achieve that radius. This is due to excessive localized stresses from the work hardening forces imposed on the metal. Bend relief synchronous sheet metal is pretty cool even cooler than just normal synchronous modeling if you ll excuse that word. If it is ok for the metal to rip the minimum bend relief is zero.

Another notch which we will call a relief notch is set back relieved a certain dimension from the edge. Type smreliefcreate in the command bar. Bend relief is provided at the end of bending edge in sheet metal design to avoid any crack tearing in the corner. Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend.

Enter relief size by bend radius ratio or force bend reliefs auto auto. Choose create relief in the sheet metal menu. Extrude hole size position guidelines creating an extruded hole using a punching process requires extreme pressure force. In this article we are going to explore how the feature is applied to the part to create the appropriate relief.

Similarly insufficient bend radius may lead to brittle fracture failure of the sheet metal. You can add a corner relief to a single sheet metal body. Each corner of the t is at risk of tearing if the relevant line segment is bent without proper bend relief. The bigger the bend relief the easier it is to align over the end of the tooling.

At the time we only explained how these reliefs worked. Select a hard edge bend face flange face or 3d solid entire model. This is to keep the material from fracturing while forming the metal. The bend relief eliminates some burrs and sharp points.

In the corner relief propertymanager under scope select the sheet metal body to which to apply the corner relief. 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. Without a bend relief the part may slip unpredictably in the tooling as the bend is made. Sometimes this notch is used for parts with a large bend radius.

Relief height is generally kept greater than two times of sheet thickness plus bend radius. Click the create relief tool button on the sheet metal ribbon tab. Another benefit of a bend. Normally that dimension is called out on the blueprint.

In december 2013 we showed the new types of corner reliefs that were added with solidworks 2014. The gap between the bend and surrounding material allows us to shape the sheet in the press brake cleanly eliminating cracking and tearing. Material bend radii and minimum bend size charts please note. One benefit of a bend relief is that it makes the part easier to produce.

Click corner relief sheet metal toolbar or insert sheet metal corner relief. In general a minimum bend relief is equal to the material thickness plus the inside bend radius.