Dimensioning Chamfers  

This task shows how to create dimensions and tolerances for chamfer using the Tolerancing Advisor.

For a general introduction of the Tolerancing Advisor, refer to Introducing the Tolerancing Advisor.
Open the Annotations_Part_02.CATPart document:

  1. Click Tolerancing Advisor in the Annotations toolbar.

  2. The Semantic Tolerancing Advisor dialog box appears.

  3. Select the surface as shown on the part.

  4. The Semantic Tolerancing Advisor dialog box is updated according to the selected surface.

  5. Click Chamfer Dimension .
    The Limit of Size Definition dialog box is displayed.
    • The Chamfer Dimension command is available for the following geometry selection:
      • a single face of a chamfer part design feature,
      • a conical face,
      • two adjacent non-parallel and non-perpendicular planar faces. Further, the first selected face shares an edge with a third planar face, and this edge is parallel to the edge shared by the two selected faces.
    • The tolerance options for chamfer are set in Tools > Options > Mechanical > Functional Tolerancing & Annotations, Tolerances tab, Chamfer Size area.
    • The Value Format area allows you to choose the chamfer display format:
      • two distances on the same dimension line,
      • a distance and an angle on the same dimension line,
      • a single distance.

      In all the cases, the chosen tolerance is applicable to the two dimensions that define the chamfer.

    • The Representation Type area allows you to choose how the chamfer dimension is attached to the geometry:
      • a single extension line (One Symbol).
      • two extension lines (Two Symbols).

  6. Enter the chamfer tolerance value and change the parameters if required.

  7. Click OK in the dialog box.

    The chamfer dimension  is created.

  8. Click Close in Semantic Tolerancing Advisor dialog box.
  • Right-click the chamfer dimension and select Properties.
    • To edit the tolerance values, select the Tolerance tab.
      In the Tolerance tab, one more type of Value Format, Angle X Distance is available. Changing the dimension type to Angle X Distance is not persistent. On editing or during update of chamfer dimension, the format type is changed to previous Value Format.
    • To edit the values format values and representation, select the Chamfer tab.
  • Right-click the chamfer dimension and select Geometry Connection Management. The Connection Management dialog box displays the Group of Surfaces feature made up of three user surface components. The first component is the chamfer face while the other two components are the adjacent faces.