3D constraints are defined by means of one of the two constraint commands available in this workbench. Depending on the creation mode chosen for creating wireframe geometry and surfaces (see Wireframe and Surface User's Guide), constraints set on these elements may react in two ways. You create references if support elements were created with the Datum mode deactivated. Conversely, you create constraints if you constrain datums. For more about datums, refer to Creating Datums. The constraints you can set in Part Design workbench are:
This task shows you how to set a distance constraint between a face and a plane, then a reference between the face and another plane. |
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Open the Constraint1.CATPart document. | ||||||||||||||||||||||||||||
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You cannot set a distance constraint between two faces belonging to Part Design features linked by their specifications. In the example below, the application creates a reference between the faces, not a driving constraint. | ||||||||||||||||||||||||||||
To know how to modify a constraint, refer to Modifying Constraints. |
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Note You cannot view constraints if the plane in which they are located is normal to the screen. In that case, you just need to use the mouse, for example, to rotate the view and therefore make the constraints visible. |