Creating Dimensions and Associated Datums

You can create dimensions and associated datums on body in white surfaces.

Five hole types are available for tolerancing:

  • Cylindrical hole

  • Elongated hole

  • Rectangular hole with angular corners

  • Rectangular hole with rounded corners

  • Other hole from previous

Before you begin: Open an existing 3D representation.
See Also
Creating a Datum and Datum Targets
  1. From the Annotation section of the action bar, click Tolerancing Advisor .

    The Semantic Tolerancing Advisor dialog box appears.

  2. Select the hole edge as shown on the part.


    The Semantic Tolerancing Advisor dialog box is updated.

  3. Click Diameter .

    The Limit of Size Definition dialog box appears.

  4. Check that Numerical values is selected, Upper Limit is 0.1mm and Symmetric Lower Limit is selected in the Limit of Size Definition dialog box and click OK.

    The dimension is created.

  5. Click Datum Feature .

    The Datum feature dialog box appears.

    Note: The Thread Geometry frame appears only when datum features are a group of thread surfaces.

  6. Click OK.

    The datum is added to the dimension.

  7. Select the two hole edges as shown on the part.


    The Semantic Tolerancing Advisor dialog box is updated.

  8. Click Distance Creation (1 slot/tab):
    The Limit of Size Definition dialog box appears.
  9. Check that Numerical values is selected, Upper Limit is 0.1mm and Symmetric Lower Limit is selected in the Limit of Size Definition dialog box and click OK.

    The Annotation Creation message box appears stating that the active view cannot be used for the annotation. The annotation lies on a non-active view.

  10. Click OK in the Annotation Creation message box.

    The dimension is created.

  11. Click Semantic Datum (1 slot/tab).

    The Datum feature dialog box appears.

  12. In the Contacting Feature section of the dialog box, click [CF].

    With this, you can select the datum contacting feature. You can select multiple features. The contacting feature which you select has to be tangent to the datum feature. It must also be on the external material side.

    Selection box is enabled.
  13. Select the required contacting feature.
    • Geometry Connection Management is active for selection. You can select this to replace, edit, or rename the current selection
    • Unselect option is active for selection. You can select this to clear the selection in the [CF] box.
    Note: The datum label is followed by [CF] in all the DRF in which it is included.
  14. Click OK.

    The datum is added to the dimension.

    The dimensions and datum are created in the geometry and tree.