Relief Sheet Metal

Preventing tearing and part deformation during the bending process.

Relief sheet metal.

See the picture on the side for an example. To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend. Creates a corner relief where three bends meet at one common point. Under corners click collect all corners to list all corners in the sheet metal body.

Click insert sheet metal corner relief. In sheet metal a bend relief is an incision cut along the sides of a planned bend. Choose create relief in the sheet metal menu. Select a hard edge bend face flange face or 3d solid entire model.

Enter relief size by bend radius ratio or force bend reliefs. Creates a corner relief where two bends meet. Similarly insufficient bend radius may lead to brittle fracture failure of the sheet metal. Bend relief and collars near pierced areas strengthen sheet metal parts.

You can add a corner relief to a single sheet metal body. Grain structure in the metal sheet is critical for avoiding cracks in sheet metal parts with lugs or tabs that are cut on. A 1 degree tolerance on all bend angles. This is due to excessive localized stresses from the work hardening forces imposed on the metal.

Type smreliefcreate in the command bar. Synchronous sheet metal is pretty cool even cooler than just normal synchronous modeling if you ll excuse that word. When designing parts for laser cutting one should not make holes smaller than the thickness of the material. Select an item see the note below.

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. Click the create relief tool button on the sheet metal ribbon tab. Though bend relief lengths and widths vary between projects they all share a common goal. The model must have three bends where the bend lines meet.

The corner relief is applied at the common intersection point of the bend lines. Do one of the following. Click corner relief sheet metal toolbar or insert sheet metal corner relief. When sheet metal makes a transition from a bend to a flat surface or to another bend it tends to rip and tear.

In general a minimum bend relief is equal to the material thickness plus the inside bend radius. Each corner of the t is at risk of tearing if the relevant line segment is bent without proper bend relief.