Step 1: Manually Measure Datum Features

The manual alignment in this example consists of an Arc and a Line. These datum features will be more accurately re-measured in "Step 3: Re-measure the Datum Features". Before you begin, mount the part so it is reasonably square to the axes of the measuring machine.

To measure the datum features:

  1. Select the Magnification tab , and adjust the magnification so it is decreased to the minimum setting (zoomed out).

With a manual (approximate) alignment, leaving the magnification at the minimum is acceptable and usually desirable, because it is easier to run the measurement routine. The DCC (refined) alignment will later improve the quality of these datum features.

  1. Select the Illumination tab , and set the Top Light to 0% (Off) and the Bottom Light to 35%.

  2. From the Auto Feature toolbar, click Circle to open the Auto Feature (circle) dialog box.

  3. Select the Vision tab.

  4. Move the machine so the Arc (Datum B) is within the Field of View (FOV).

  5. Click three points spaced along the edge of the arc. A radial target will be overlaid on the arc as shown below:

  1. Click Create to add this circle to the measurement routine.

  2. From the drop-down list box of the Auto Feature dialog box, select Line .

  3. Move the machine so the Edge (Datum C), adjacent to the previously measured arc, is within the FOV.

  4. Click two points - One on the left end and one on the right end. A line target is overlaid on the edge as shown below:

  1. Click Create to add this line to the measurement routine.

  2. Click Close to exit the Auto Feature dialog box.

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