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To create a Point-Cloud Torus item

To measure a torus within a point cloud:

  1. Open a Geometric group in the Sequence Tree.
  2. Click Geometry tab > Features panel > 3D > Point-Cloud Torus.
Note: Point-cloud items are available only when creating inspections for CNC and Manual machines.

The Point Cloud Torus dialog contains the following areas:

Name — Enter a name for the item. The name is used in the inspection sequence, in the Report and Info tabs, and when referencing the item in other items.

Use nominals — Select this check box to enter or change the item nominals, and to compare the item measurements to their nominal values. Deselect this check box to disable comparisons with the item nominals.

When this check box is selected, an in-tolerance or out-of-tolerance indicator is displayed on the measured item's icon in the inspection sequence; the border of the item label is coloured to indicate whether the measurements are within tolerance; and the tolerance, nominal, deviation, and error values of the item are shown in the report.

When this check box is deselected, the Nominal boxes are disabled, no tolerance indicators are displayed and no tolerance, nominal, deviation, and error values are shown in the report for this item.

Note: To load the nominals from the CAD model, click and select From CAD Entity. To replace the nominals with the item's measurements in the current Measure, click the button and select From Active Measure.

Visible — Select this check box to display the item in the CAD view.

Output in report — Select this check box to include the item in the report.

Coordinate system — Select the alignment relative to which the item's measurements are to be reported.

To specify the alignment during the inspection, select <Active Alignment>. You can then select the alignment from the Active alignment list, or by adding an Active Alignment item to the inspection sequence.

Evaluate from nominal — Select this check box to limit the search for the feature to the region around its nominal position. Deselect this check box to search the whole point-cloud for the feature.

Search distance — Enter a value in the box to specify the maximum distance from the nominal position of the feature that you want PowerInspect to search.

Material side — Choose the side from which you want to probe the feature. Select:

    • Hole (ID) to probe an internal feature.
    • Boss (OD) to probe an external feature.
    • Not specified to leave the probing direction unrestricted.
Note: Hole (ID) - Only for CNC and Boss (OD) - Only for CNC provide backwards compatibility for items created in previous versions of PowerInspect. You cannot select these options when creating new items.

Start angle — Enter the start angles of the torus relative to the axes of the selected Coordinate system. The upper box specifies the azimuth start angle; the lower box specifies the elevation start angle.

End angle — Enter the end angles of the torus relative to the axes of the selected Coordinate system. The upper box specifies the azimuth end angle; the lower box specifies the elevation end angle.

Major diameter/radius — Enter the nominal diameter or radius of the major circle. The dotted line indicates the major circle of the torus:

Minor diameter/radius — Enter the nominal diameter or radius of the minor circle. A section through the torus shows its minor circle:

Centre — Specify the nominal coordinates of the centre of the torus.

Direction vector — Specify the nominal direction of the main axis. The red arrow indicates the vector of the torus.

To reverse the vector, click the Invert vector button.

Profile — Enter the Maximum difference between the points with greatest positive deviation and greatest negative deviation from the best-fit torus. If the difference between the greatest positive deviation and the greatest negative deviation exceeds the Maximum value, the profile is out-of-tolerance.

Point sources — Select this tab to use points from other items to measure this item.

Select an option to specify the sources containing the points you want to use:

    • None — Specifies no items as sources.
    • Individual items — Displays all available Point-Cloud items in the Available sources list. To specify an item as a source, select it, and then click to add it to the Selected sources list. To remove an item from the Selected sources list, select it, and then click . If you are measuring a 3D feature such as a sphere or cone, deselect the Display point-clouds only check box to list all available items in the inspection sequence.
    • All point-clouds — Specifies all available Point-Cloud items as sources. PowerInspect automatically selects this option when you extract features from point-clouds using the Geometry Explorer.
    • All items — Specifies all items in the inspection sequence as sources. This option is available only for 3D features.

Click OK to close the dialog and save your changes.

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