Sheet Metal Relief Cuts

When sheet metal makes a transition from a bend to a flat surface or to another bend it tends to rip and tear.

Sheet metal relief cuts.

In general a minimum bend relief is equal to the material thickness plus the inside bend radius. When designing parts for laser cutting one should not make holes smaller than the thickness of the material. Sheet metal relief cut need to lay a flat pattern of a sheet metal part with a flange with a cut because it is not full length of the original face. This same tool can be used to make a flat piece of sheet metal that one would use to add edge flanges and other useful sheet metal features.

Sheet metal parts with a minimum of 0 9mm to 20mm in thickness can be manufactured. Bend relief cut into the part again the depth of the relief should be greater than the radius of the bend. Under corners click collect all corners to list all corners in the sheet metal body. Not shown scroll down in property manager is an auto relief setting that controls how corners and relief cuts are handled.

Relief cuts help parts avoid overhangs and tearing at bends. 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 corner relief sheet metal toolbar or insert sheet metal corner relief. Bends in sheet metal are manufactured using sheet metal brakes.

To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend. A 1 degree tolerance on all bend angles. First utilize minimal bend radius of internal bend radius equal to material thickness. Bend relief synchronous sheet metal is pretty cool even cooler than just normal synchronous modeling if you ll excuse that word.

There are two things that can be done to reduce the risk of sheet metal tearing. You can add a corner relief to a single sheet metal body. Options in basic sheet metal base flange tab.