Sheet Metal Corner Relief Design

The resulting model faces are all nicely trimmed and all have appropriate corner relief in the flat pattern.

Sheet metal corner relief design.

Relief height is generally kept greater than two times of sheet thickness plus bend radius. Bends in sheet metal are manufactured using sheet metal brakes. In general a minimum bend relief is equal to the material thickness plus the inside bend radius. You can define corner relief settings during feature creation or you can predefine them in the relief area of the sheetmetal preferences dialog box or using sheet metal parameters.

Relief helps to control sheet metal material behavior and to prevent unwanted deformation during unbend operations. When sheet metal makes a transition from a bend to a flat surface or to another bend it tends to rip and tear. When designing parts for laser cutting one should not make holes smaller than the thickness of the material. 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. Understanding corner relief design flexibility 2 the contour flange is created using the auto miter option and the seven edge loop of the polygon is selected. Figure 3 figure 4 figure 5 figure 6. Rip corner relief and conversion creo creoparamet.