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Adding Probe Angles AFTER Calibration Sphere has been moved

CarbideEVO
Good morning everyone,

After searching the forum (seems using google to do it gets better results!), I can't find a clear answer to this question that has been asked many times Confused Rolling eyes :

After calibrating A0B0, and additional angles - If I move the sphere, but discover I need additional angles, I would recalibrate all previous angles, and the new angles.

However, I read people saying this is unnecessary - as long as I recalibrate A0B0, and select "Yes, the sphere has moved" (because it has!), and measure the NEW angles..

that the previously calibrated angles and the newly added angles will all related to each other.

Is this true? Is this explained in the help file? What is the source of your information?

Thank you for your time!
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  • So your question is dependent upon how your machine's probe calibration is currently managed.

    In my personal opinion, which is utilizing an (over) abundance of caution:
    If you need to add probe angles after the cal sphere has moved, you should re-calibrate your master probe at T1A0B0 with cal sphere re-installed, then calibrate ALL angles of ALL probes again, including the new angles.

    However, according to hexagon support page link here: (you'll have to log in to open the PDF)
    https://support.hexagonmi.com/s/arti...=1577986104849

    Example 2 directly answers your question: it says you can get away with re-calibrating only the master tip and the new angles.



    This is exactly what I was looking for, thank you

    As I saw in the other threads, it seems everyone has a strategy or opinion that differs a little. I guess the safest unquestionable thing to do is continue calibrating all probe angles, however, it may not be necessary in some circumstances.

    I do not work in a production environment, so probes configurations are changing daily, and new challenges require new angles! Slight smile Thank you all!

  • in reply to CarbideEVO
    the last thing you want is to produce data with skewed results because you tried to cut a corner and save 15 minutes. if you calibrate the master probe and just the new angles, the likelihood of the existing probe angles not correlating with the new ones (or being shifted from the master) is bound to be higher.

    If you calibrate all a once, this uncertainty of whether or not all your probes correlate, is mitigated entirely.
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  • in reply to CarbideEVO
    the last thing you want is to produce data with skewed results because you tried to cut a corner and save 15 minutes. if you calibrate the master probe and just the new angles, the likelihood of the existing probe angles not correlating with the new ones (or being shifted from the master) is bound to be higher.

    If you calibrate all a once, this uncertainty of whether or not all your probes correlate, is mitigated entirely.
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