Relief Ratio Sheet Metal

Type smreliefcreate in the command bar.

Relief ratio sheet metal.

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. Ratios are configured for the hard material condition. This check computes inside bend radius and checks the ratio of bend radius to sheet thickness. The minimum bend radius data shown in these charts is measured to the inside of the bend.

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 fabrication is the process of forming parts from a metal sheet by punching cutting stamping and bending. Quick video about bend radius watch more tech tip videos bend radii minimum bend sizes.

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. Right click the sheet metal feature in the featuremanager design tree and select edit feature. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.

Click the create relief tool button on the sheet metal ribbon tab. Sheet metal in solidworks sheet metal parts are generally used as enclosures for components or to provide support to other. The value of the relief ratio must be between 0 05 and 2 0. Once the base flange feature is created this setting will be.

3d cad files are converted into machine code which controls a machine to precisely cut and form the sheets into the final part. The higher the value the larger the size of the relief cut added during insertion of bends. Examples of i tear. 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 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. The length ratio 3 2 fig. User can configure the ratio based on the material.

The width of the relief cut and the depth it extends past the bend will be determined by relief ratio part thickness. The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications. To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend. 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.

Enter relief size by bend radius ratio or force bend reliefs. Bend radii minimum bend sizes. Choose create relief in the sheet metal menu. Protocase tech tip video.

Do one of the following. In general a minimum bend relief is equal to the material thickness plus the inside bend radius.