KOMPAS-3D v23

In this section:

Objects used as a section

Possibility of building a solid and thin-walled element depending on the section objects

Procedure for setting the section of an extrusion element

Notes on using sketches and sketch areas as section

Example of using multiple sketch areas as section

Objects used as a section

You can select one or several objects of a model as a section of an extrusion element. These objects can be:

•a sketch or a closed sketch area (see section Using sketches in operations,

•a face,

•spatial curve,

•edge.

The set of selected objects may be arbitrary.

If required, without interrupting the command you can build a contour or a sketch and add it to the set of section objects.

Objects selected as a section can be located in various planes, but extrusion in the required direction should be available for each of them. If at least one object cannot be extruded in the specified direction, the extrusion element will not be built.

Possibility of building a solid and thin-walled element depending on the section objects

You can select various objects as a section of the extrusion element.

The type and parameters of the selected objects determine the possibility of building the element – solid or thin-walled. More details on thin-walled element...

For some objects, both options are available; when others are selected, only a thin-walled element can be built. Examples of building solid and thin-walled elements are provided on figures.

•The extrusion element can be either solid or thin-walled if the following objects are selected as sections:

•Flat closed object:

•face,

•edge,

•spatial curve,

•contour, regardless of its type,

•sketch containing closed object chains,

•sketch area.

•Non-flat face.

•A closed contour on a non-flat face (type of contour – Contour on face).

•The extrusion element can only be thin-walled if the following objects are selected as the section:

•Planar open object:

•spatial curve,

•contour, regardless of type,

•sketch containing at least one open chain of objects.

•Open or closed non-flat object:

•edge,

•spatial curve,

•contour of Arbitrary contour type.

Setting the section of an extrusion element

To select the extrusion element section, use elements of the Main section of the Parameter Toolbar.

•To select existing objects as sections, click in the Section field and specify the required objects in the Design Tree or in the graphic area of the model. Objects will be added to the Section in the specified order.
Selecting a sketch and a sketch area has specifics.

•To create a new object (contour or sketch), do the following.

•To build the contour, press the Build contour  button to the right of the Section field. Will start process of Creating Contour. Specify the objects included in the contour, and click the Create Object button.

•To build a sketch, press the Create Sketch button to the right of the Section field. Will start sketch placement process, and then the system will switch to the sketch mode for creating geometry. Perform the steps necessary to build and complete the sketch mode.

After completing the contour/sketch creation process, the system returns to the extrusion process. The created contour/sketch appears in the Design Tree and is automatically added to the set of sections of the extrusion element.

Names of all objects selected as sections are displayed in the Section field in the form of a list. You can add objects to the list and remove them.

If a sketch (sketch area) is the section, you can edit the sketch without interrupting the command. To do this, select it in the Section field and press the Edit button next to the field. A contour used as a section is edited in the same way.

Notes on using sketches and sketch areas as section

You can select entire sketches or separate areas within a sketch as sections.

•To select the required sketch, specify one of its objects in the graphic area of the model or specify the sketch itself in the Design Tree. In the Section field, the sketch name will be displayed.

•To select an area in the sketch, click inside this area. In the Section field, the name of the sketch and the word Region will be displayed. You can select one or multiple areas within one sketch.

A sketch selected as a section may contain one or more contours — closed and open.

When selecting a sketch with multiple closed contours as well as when selecting areas within a sketch, note the following.

•If contours (areas) intersect, the section of the extrusion element is created by merging the intersecting areas.

•If contours (areas) do not intersect, the following building options are possible.

•Element with holes — the section is represented by a non-solid sketch area or a sketch containing contours nested into each other with nesting level 1.

•Element consisting of separate parts — the section is represented by several separate sketch areas or by a sketch containing separate contours or contours nested into each other with nesting level higher than 1.

To learn about the results of building an extrusion element with a section which is a sketch (a sketch area), see section Possibility of building a solid and thin-walled element depending on the section objects.

Example of using sketch areas as section

You need to build a model shown in the figure.

1.Create the model sketch on one of the coordinate planes.

2.Run the Extrusion Element  command.

3.By Default The operation result is a Merging   jhtion. Leave it unchanged.

4.Specify a sketch area as a section of the extrusion element. Specify the extrusion method To Distance and the extrusion depth 25. The figures show the way to specify an area within a sketch and the phantom of the created element.

5.Press the Create Object  button.

After the extrusion element is created, the command is not completed. The specified parameters — operation result, extrusion method and depth — are saved for subsequent builds.

6.Specify one more sketch area as a section of the next extrusion element and enter the extrusion depth value 30.

7.Press the Create Object   button. The created element will be merged with the previous one.

8.Specify the remaining sketch areas as a section of the last extrusion element.

9.Enter the extrusion depth value 10.

10.Press the Create Object  button.

11.If you do not need to continue working with the sketch, hide it.