Relief Ratio Sheet Metal

Quick video about bend radius watch more tech tip videos bend radii minimum bend sizes.

Relief ratio sheet metal.

Examples of i tear. Do one of the following. Choose create relief in the sheet metal menu. Click the create relief tool button on the sheet metal ribbon tab.

The value of the relief ratio must be between 0 05 and 2 0. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. Protocase tech tip video. Sheet metal fabrication is the process of forming parts from a metal sheet by punching cutting stamping and bending.

User can configure the ratio based on the material. Type smreliefcreate in the command bar. Sheet metal in solidworks sheet metal parts are generally used as enclosures for components or to provide support to other. To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend.

For a 3 width ratio when the part is 1 mm in thickness the width of the slot will be 3 mm. 7 only affects the relief within a narrow margin. If you select rectangular or obround specify the relief ratio. Select an item see the note below.

Enter relief size by bend radius ratio or force bend reliefs. Ratios are configured for the hard material condition. In the propertymanager under auto relief change the type of relief cut. The length ratio 3 2 fig.

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. The width of the relief cut and the depth it extends past the bend will be determined by relief ratio part thickness. This check computes inside bend radius and checks the ratio of bend radius to sheet thickness. The higher the value the larger the size of the relief cut added during insertion of bends.

Once the base flange feature is created this setting will be. When sheet metal makes a transition from a bend to a flat surface or to another bend it tends to rip and tear. Since commercial sheet metal bending can be done with less concern for stresses caused during forming operation the radius can be near zero for thin sheet metal. Bend radii minimum bend sizes.

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. 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. The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.

The minimum bend radius data shown in these charts is measured to the inside of the bend. In general a minimum bend relief is equal to the material thickness plus the inside bend radius.