When sheet metal makes a transition from a bend to a flat surface or to another bend it tends to tear depending on the geometry.
Relief ratio sheet metal.
When designing parts for laser cutting one should not make holes smaller than the thickness of the material.
The higher the value the larger the size of the relief cut added during insertion of bends.
This check computes inside bend radius and checks the ratio of bend radius to sheet thickness.
If you select rectangular or obround specify the relief ratio.
When starting a sheet metal part by creating a base flange feature one of the initial parameters along with sheet metal gauge and bend allowance are the auto relief settings.
User can configure the ratio based on the material.
Ratios are configured for the hard material condition.
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.
Sheet metal parts with a minimum of 0 9mm to 20mm in thickness can be manufactured.
For a 3 width ratio when the part is 1 mm in thickness the width of the slot will be 3 mm.
The value of the relief ratio must be between 0 05 and 2 0.
Sheet metal in solidworks sheet metal parts are generally used as enclosures for components or to provide support to other.
The higher the value the larger the size of the relief cut added during insertion of bends.
163 solidworks sheet metal tutorial.
The higher the value the larger the size of the relief cut added during insertion of bends.
Examples of i tear ii obround and iii rectangle.
7 only affects the relief within a narrow margin.
Right click the sheet metal feature in the featuremanager design tree and select edit feature.
Auto relief types rectangular tear obround using understanding auto relief ratio cases when relief not working.
The value of the relief ratio must be between 0 05 and 2 0.
The length ratio 3 2 fig.
Bends in sheet metal are manufactured using sheet metal brakes.
D relief ratio part thickness the bend region is represented by the dark gray area of the diagram.
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.
