Propagating Geometry Selection for Feature Creation  

This task shows you how to automatically propagate geometry selection corresponding to the same surface.
The propagation of geometry selection for all the faces that define:
  • The same sphere surface.
  • The same plane surface.
  • The same cylinder surface.
  • The same cone surface.
  • The same torus surface.
  • A pattern of parallel cylinders.
  • A pattern of spheres.
Open the Common_Tolerancing_Annotations_04.CATPart document.
  1. Select the cylindrical hole as shown.

  2. Click the Tolerancing Advisor in Annotations toolbar.
    The Semantic Tolerancing Advisor dialog box appears. The geometry propagation selection commands are available.

     
    The options are activated according to the type of face selected depending on the canonicity.

    In this case as the cylindrical face is selected we have two options out of the three available options activated:

    • All same canonicity faces - This option selects all the faces of the part (at part level) or of the part instance (at product level or at process level – the part instance being the one that corresponds to the last selected face) that have the same canonicity.
    • All same diameter parallel sphere - This option selects selects all the faces of the part (at part level) or of the part instance (at product level or at process level – the part instance being the one that corresponds to the last selected face) that have spherical canonicity and the same diameter.
    • All same diameter parallel cylinder - This option selects selects all the faces of the part (at part level) or of the part instance (at product level or at process level – the part instance being the one that corresponds to the last selected face) that have cylindrical canonicity, the same diameter and parallel to cylindrical face selected.
    • You can also select additional faces if required.
  3. Select the All same diameter parallel cylinder option. You can see that all the cylindrical surfaces are highlighted.

  4. Click the Position Specification icon: .
    The Geometric Specification dialog box appears. Click OK.
    The specification is created.

    Click Close in the Semantic Tolerancing Advisor dialog box to end the command.

  5. Select the spherical hole. 

  6. Click Text with Leader in the Annotations toolbar.
    The Text Editor dialog box appears.
  7. The Tools Palette for geometry propagation is also displayed.
    There are two options in the Tools Palette:
    • All same canonicity faces
    • All same diameter parallel sphere
    • You can also select additional faces if required.
     
    The Tools Palette is displayed according to the type of face selected depending on the canonicity.
  8. In this case, select the All same diameter parallel sphere option. You can see that all the spherical surfaces are highlighted.

  9. Enter the text, for example "All Spherical Faces" in the dialog box.

    Click OK to end the text creation. You can click anywhere in the geometry area too.

    The text is created for all the faces commonly.
     
 

Using the All same canonicity faces option

Open the Common_Tolerancing_Annotations_05.CATPart document.
  1. Select the planar surface as shown.
  2. Click Flag Note with Leader in Annotations toolbar.
    The Flag Note Definition dialog box appears.
  3. The Tools Palette for geometry propagation is also displayed.
    There is option in the Tools Palette:
    • All same canonicity faces
    • You can also select additional faces if required.
  4. Select the All same canonicity faces option. You can see that all the planar surfaces are highlighted.

  5. Enter the flag note's name as Geometry Propagation in the Name field.

    Click OK.

    The flag note is created for all the faces commonly.
This functionality of allowing geometry propagation selection is provided in following command:
  • Constructed Geometry Creation
  • Text with Leader , Text , Text Parallel to Screen
  • Flag Note with Leader , Flag Note
  • Datum Element
  • Datum Target
  • Geometrical Tolerance
  • Roughness
  • Tolerancing Advisor