Flange

To create a flange on sheet parts SMA: Flange operation is used:

 

 

The flange thickness coincides with the part thickness and the width is determined by the base line (taking offsets into account). The flange displacement can be either outside or inside. You can set reliefs at the flange corners in the command and set treatment parameters of the intercepting flanges.

 

Command parameters

The command parameters are common for the sheet metal commands and are described in the corresponding subsection above.

The command menu options:

Finish input. To build geometry according to the given parameters. In case the parameters are insufficient, the option in not available.

Set entity Parameters. Call a standard 3-D design command parameters dialog.

Exit command. Shuts down the command cancelling the given parameters.

Preview Operation Result. The option enables/disables a standard option for reviewing 3-D design commands.

Select Line. The option to select a line determining the base bending line.

Add Edges. The option to select an edge determining the base bending line. The option as active at entering the command on default.

Select first Vertex or 3D Node. The option to select the first point determining the base bending line.

Select second Vertex or 3D Node. The option to select the second point determining the base bending line.

Select Profile. The option enables you to build a flange whose shape is determined by the profile. This option is not to be mixed up with Contour Flange command where the profile sets the flange cross-section. In this case the profile sets the flange shape in the plane. The profile is to be closed.

Draw Profile. The option enables you to switch over to drawing work plane mode to create a profile. The system automatically activates drawing on the work plane which coincides with the face where the rib for building the flange was selected. In this case the created profile will be selected automatically on exiting from the drawing on the work plane mode and you don’t have to set it with Select Profile option. The profile is to be closed.

Cancel Selection. Cancel all elements selected and clear the operand window.

 

Flange creation

A typical procedure for creating a flange.

●Select a rib determining the base bending line.

●Select a counting variant.

●Set the position.

●Set the angle.

●Set the parameters of the command determining the flange shape or select a profile.

●Set the relief and displacement parameters if necessary.

●Set the corner treatment parameters if the flange has intersections with the workpiece.

●Set the overlapping variant if adjacent ribs are selected.

●In case the flange is impossible to build, finish entering. Otherwise change flange parameters.

When moving the flange or building the flange by the base line which is not at the marginal edge of the workpiece, there are some peculiarities of setting command parameters.

At positive displacement there appears an additional flat part at the glued lug. The length of the part is determined by the Offset parameter. At negative displacement (i.e. displacement inwards of the workpiece) both lines are moved – the gluing line and the bending one. See subsection “General parameters of sheet metal commands” for details on the Offset parameter and the Position parameter associated with it.

In most cases the lug is glued at one of the side edges (it is realized by selecting the correspondent workpiece edge as a base line at zero displacement relative to it). However, gluing can be done inside the workpiece as well, e.g. when the negative displacement is set at gluing to the side edge. In this case the workpiece material replaced by the glued lug is removed. The removed part width is determined by perpendiculars to the base line running from its ends (taking indents into account), similarly to bending. There are two variants of removing: either all the material to the end of the workpiece is removed or the material at the glued lug length is removed only.