KOMPAS-3D v23

To split a solid into several solids, use the Cut command.

To perform the cutting operation, you need to select the secant objects and define the solids to cut.

Selecting cutting objects

Select one or more cutting objects in the graphic area or in the Design Tree. The following objects can be used as cutting objects:

•coordinate plane or construction plane,

•sketch/
The solid is cut by the surface of sketch extrusion on both sides of the sketch plane.
Please, note the following if you select a sketch as a cutting object:

•a sketch may contain one or more contours — closed and open,

•you can only select the entire sketch — selection of individual contours in unavailable.

 

•Surface or solid
To be able to cut, the surface/solid must completely intersect the solid to cut. The surface/solid can be specified in the Design tree. You can also specify the surface/solid in the graphic area if the corresponding filteris enabled.

•Face of surface or solid
To be able to cut, the face must completely intersect the solid to cut. The face is specified in the graphic area.

•Array of construction planes or surfaces
The array can be specified in the Design Tree. It can contain objects of various types; however, you can only use constructive faces and surfaces that completely intersect the body for cutting.
The cutting operation uses all array instances (including the base one), objects that intersect with the sliced solid. All other instances are not used.

The set of cutting objects may be arbitrary.

You can both select the existing objects and create new constructive surfaces and sketches to use as cutting objects. To do this, use the buttons to the right of the Secant objects field.

•To build an auxiliary plane, click Draw plane button. This will start a process of building a plane. Follow the plotting process and click Create Object.

•To build a sketch, click Create Sketch button. This 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 the constructive plane/sketch is created, the system returns to the cutting operation. The created object is displayed in the Design tree and automatically added to the cutting objects list.

Names of all selected cutting objects are displayed in the Secant objects field on the Parameters toolbar.

Define operation application area

Operation application area is a set of objects to be cut into separate solids when they intersect the cutting objects.

Elements you can use to define the application area can be found in the Application Area section.

With the help of the Groups of objects buttons, determine the type of objects included in the application area, — Solids , Components or Components and Solids . Intersections will be found for objects of selected type.

The operation can extend to all objects of a selected type or to some of them. To specify objects, intersection with which will be taken into account when cutting, use the Objects group of buttons. The following options are available:

Select the required option.

For the first three options the object list is formed automatically and only includes objects intersected by the selected cutting objects.

For the Selected Objects variant, you need to manually create a list of objects. This list can include objects both intersected and not intersected by the the cutting objects.

Completing the operation

To complete splitting of a solid into several ones, click Create Object .

The process Modifying a Set of Solids starts. Select the solids to keep and complete the operation. Details...

After the operation is completed, the source solid is deleted from the model and the operations performed to create it are hidden. The model now includes the solids resulting from intersecting of the source solid by the selected sectioning objects. The Design Tree displays the cutting operation .

To complete operation of the command, click Finish .

Notes on the cutting operation

•The cut operation is created even if no solid falls into the application area or the solids that do fall into the application area do not fully intersect with the sectioning objects. In such cases, the number of solids in the model does not change. If you later edit the model and the solids fall within the cutting operation application area and are completely intersected by the sectioning objects, the number of solids in the model will automatically increase. Editing a model can also result in fewer solids if objects change in such a way that there are no intersections with sectioning objects.

•If applying the splitting operation leads to errors in the topology of objects, then the splitting operation is marked as erroneous in the Design Tree (for example, it is impossible to use the splitting operation to make the ring open). Edit the source objects so that they meet the condition that the model solids should be completely intersected by sectioning objects.

See Also

Split a solid into multiple solids: Overview