Hem Creation

Hem Creation

Path: Insert | Swept Walls | Hem

  Located in a flyout on the Sheet Metal toolbar.

Use this to ...

• Create a parametric hem on a planar face relative to an edge.

Prerequisites

• You should be in the Sheet Metal Design workbench.
• You need an existing wall.

Process: Creating a Basic Hem

1. Select Insert | Swept Walls | Hem to display the Hem Definition dialog.

2. Select Basic from the hem type list.

3. Pick the edges to act as a spine for the flange. CATIA displays the number of edges in the Spine field in the dialog.

4. If necessary, click Tangency Propagation to include all tangent edges.

5. Enter a value in the Radius text box or click the arrows to increase or decrease the value.

6. Enter a value in the Length text box or click the arrows to increase or decrease the value.

7. Click OK to create the hem.

Process: Creating a Relimited Hem

1. Select Insert | Swept Walls | Hem to display the Hem Definition dialog.

2. Select Relimited from the hem type list. The dialog changes to display further options.

3. Pick the edges to act as a spine for the flange. CATIA displays the number of edges in the Spine field in the dialog.

4. If necessary, click Tangency Propagation to include all tangent edges.

5. Click in the Limit 1 text box and pick the first limiting element in the Graphics window.

6. Click in the Limit 2 text box and pick the second limiting element in the Graphics window.

7. Enter a value in the Radius text box or click the arrows to increase or decrease the value.

8. Enter a value in the Length text box or click the arrows to increase or decrease the value.

9. Click OK to create the hem.

Options

Basic Hem

Creates the hem along the entire length of the edges picked in the Graphics window.

Relimited Hem

Creates the hem along a certain length of the edges picked in the Graphics window. The length is governed by the limiting elements picked.

Spine

Displays the number and type of geometry picked for the hem in the dialog.

Tangency Propagation

Allows you to propagate along the picked edge and include any tangent edges for the hem rather than picking each edge separately.

Limit 1

Allows you to pick the first element in the Graphics window that stops the hem.

Limit 2

Allows you to pick the second element in the Graphics window that stops the hem.

Radius

Defines the radius value for the hem.

Length

Defines the length value for the hem.

More

Expands the dialog to see other options.

K Factor

Allows you to change the K factor for the hem. The value is set by default using the value specified in the Sheet Metal Parameters. You can enter a different value by right-clicking in the text box, selecting Formula | Deactivate, and typing in a new value.