Though bend relief lengths and widths vary between projects they all share a common goal.
Relief in sheet metal.
Sheet metal parts may have sharp corners but designing a fillet of the material s thickness will make parts more cost effective.
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.
Lists corners to which you can apply corner relief.
When you apply a relief option to the selected corner the list shows the option applied.
Relief cuts help parts avoid overhangs and tearing at.
Bend reliefs in sheet metal.
In sheet metal a bend relief is an incision cut along the sides of a planned bend.
3d cad files are converted into machine code which controls a machine to precisely cut and form the sheets into the final part.
When you select a corner it is highlighted in the graphics area.
To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend.
Lets you select the sheet metal body to which the corner relief is applied.
Synchronous sheet metal is pretty cool even cooler than just normal synchronous modeling if you ll excuse that word.
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.