During the bending of sheet metal material around the bend tends to stretch and deform.
Sheet metal relief.
In sheet metal a bend relief is an incision cut along the sides of a planned bend.
Another notch which we will call a relief notch is set back relieved a certain dimension from the edge.
If it is ok for the metal to rip the minimum bend relief is zero.
Preventing tearing and part deformation during the bending process.
Extrude hole size position guidelines creating an extruded hole using a punching process requires extreme pressure force.
You can add a corner relief to a single sheet metal body.
The flange which does not have relief will result in a greater amount of distortion or tearing of the adjacent material.
The selected items can be a 3d solid with sheet metal features a face or a hard edge of the solid.
Normally that dimension is called out on the blueprint.
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Relief height is generally kept greater than two times of sheet thickness plus bend radius.
Grain structure in the metal sheet is critical for avoiding cracks in sheet metal parts with lugs or tabs that are cut on.
Click corner relief sheet metal toolbar or insert sheet metal corner relief.
In the corner relief propertymanager under scope select the sheet metal body to which to apply the corner relief.
As per sheet metal design thumb rules the depth of bend relief should be greater than or equal to the inside bend radius of the bend and the width of the bend relief should be the same as the sheet metal thickness or more.
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.
In general a minimum bend relief is equal to the material thickness plus the inside bend radius.
Under corners click collect all corners to list all corners in the sheet metal body.
Bend relief is provided at the end of bending edge in sheet metal design to avoid any crack tearing in the corner.
To create a relief locally you can select one or two hard edges one or two bends or a bend and a hard edge.
To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend.
Though bend relief lengths and widths vary between projects they all share a common goal.
This is to keep the material from fracturing while forming the metal.
One benefit of a bend relief is that it makes the part easier to produce.
