Concentricity reports how closely the centres of two circles or the axes of two cylinders coincide.
To create a GD&T Concentricity item:
- Open a Geometric group in the inspection sequence.
- Click Geometry tab > GD&T panel > Location > Concentricity.
- Enter a Name for the item.
- To exclude this item from the report, deselect the Output in report check box.
- Enter any extra information about the item in the Comment box.
- Click Next to display the Feature Definition dialog.
- In the
Feature list, select the item whose concentricity you want to report. You can select a circle or a cylinder.
The diagram at the bottom-right of the dialog illustrates the shape of the tolerance zone.
- In the
Primary datum box, select the datum against which you want to check the concentricity of the
Feature. Click
to
select an item from the CAD view using the mouse.
- Enter the width of the item's tolerance zone in the
Tolerance box. The control frame at the top of the dialog summarizes the tolerancing requirements.
This GD&T item is length-dependent. The whole Feature must lie within the tolerance zone to be in tolerance.
- Click
Next. The results of the GD&T calculation are displayed in the
Result Preview dialog. If the result is:
- Accepted, the measurement is in-tolerance.
- Out of Tolerance, the measurement is out-of-tolerance.
- Not Calculated, the measurement cannot be calculated because one or more of the selected features or datums is unmeasured.
- Click Finish to create the item and save the results, or click Back to change the item definition.