Relief Ratio Sheet Metal

163 solidworks sheet metal tutorial.

Relief ratio sheet metal.

Bends in sheet metal are manufactured using sheet metal brakes. The length ratio 3 2 fig. For a 3 width ratio when the part is 1 mm in thickness the width of the slot will be 3 mm. The higher the value the larger the size of the relief cut added during insertion of bends.

In the propertymanager under auto relief change the type of relief cut. When sheet metal makes a transition from a bend to a flat surface or to another bend it tends to rip and tear. The value of the relief ratio must be between 0 05 and 2 0. The higher the value the larger the size of the relief cut added during insertion of bends.

A 1 degree tolerance on all bend angles. This check computes inside bend radius and checks the ratio of bend radius to sheet thickness. Examples of i tear ii obround and iii rectangle. 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.

The higher the value the larger the size of the relief cut added during insertion of bends. 7 only affects the relief within a narrow margin. Sheet metal parts with a minimum of 0 9mm to 20mm in thickness can be manufactured. D relief ratio part thickness the bend region is represented by the dark gray area of the diagram.

The value of the relief ratio must be between 0 05 and 2 0. Ratios are configured for the hard material condition. 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. User can configure the ratio based on the material. When designing parts for laser cutting one should not make holes smaller than the thickness of the material. If you select rectangular or obround specify the relief ratio.

6 shows when the ratio to thickness is used in a obround relief the width ratio has more influence on the shape of the relief than the length ratio. To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend.