Bending Relief For Sheet Metal

Enter relief size by bend radius ratio or force bend reliefs.

Bending relief for sheet metal.

In sheet metal a bend relief is an incision cut along the sides of a planned bend. This is done through the application of force on a workpiece. 3d cad files are converted into machine code which controls a machine to precisely cut and form the sheets into the final part. For better clarity see the picture below.

Protocase tech tip video. Click the create relief tool button on the sheet metal ribbon tab. Grain structure in the metal sheet is critical for avoiding cracks in sheet metal parts with lugs or tabs that are cut on. Bend relief is the notch that needs to be created for sheet metal bending.

This shape can be visualized as bending one line segment in a t to the maximum depth permitted. Commonly used equipment include box and pan brakes brake presses and other specialized machine presses typical products that are made like this are boxes such as electrical enclosures and rectangular ductwork. Type smreliefcreate in the command bar. Bend relief and collars near pierced areas strengthen sheet metal parts.

Each corner of the t is at risk of tearing if the relevant line segment is bent without proper bend relief. To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend. See the picture on the side for an example. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.

Similarly insufficient bend radius may lead to brittle fracture failure of the sheet metal. Choose create relief in the sheet metal menu. Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape. Preventing tearing and part deformation during the bending process.

Sheet metal fabrication is the process of forming parts from a metal sheet by punching cutting stamping and bending. The flange which does not have relief will result in a greater amount of distortion or tearing of the adjacent material. Select a hard edge bend face flange face or 3d solid entire model. Though bend relief lengths and widths vary between projects they all share a common goal.

Bending is a manufacturing process that produces a v shape u shape or channel shape along a straight axis in ductile materials most commonly sheet metal. Bend radii minimum bend sizes. Do one of the following. In general a minimum bend relief is equal to the material thickness plus the inside bend radius.

The force must exceed the material s yield strength to achieve a plastic deformation. Quick video about bend radius watch more tech tip videos bend radii minimum bend sizes. When sheet metal makes a transition from a bend to a flat surface or to another bend it tends to rip and tear.