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Calibration question

WolfMan
Lets say for example, hexagon calibrated your cmm, and found that it is OOT. For example one of the axis is reading .00008 over the machine spec. And they say it may take thousands of dollars to bring in spec. What does it mean to you? Does it mean that they will put out of service sticker? Does it mean the machine must be in spec, even if most of your tollerances are +\_.01 , no less?

What would you do if it was up to you? Would you, hire Hexagon to tear apart the machine to rebuild it and bring it in spec? or would you still use it, since your tollerances are wide open, and .00008 wont affect your results much?
  • I would get a different Hex tech. in to take a second look.
  • I would get a different Hex tech. in to take a second look.

    Good point. Second opinion just in case
  • I would get a different Hex tech. in to take a second look.

    Say for example the other tech would confirm it beeing OOspec. But they cant tell you exactly whats wrong with it and advise you to rebuild the axis. Aprox $6,000, but could be more if it doesnt fix it

    Would Hexagon place out of service sticker if it wasnt in spec?
  • You should be able get a map of where the machine is having a problem, you should be able to get a cert that states that.
    Same as any other tool.
    Calibrated and documented about the condition.
  • Say that you can get a map. Are you saying, that you can just avoid placing the part in that spot and that's it?

    What about calibration sticker?
    You should be able get a map of where the machine is having a problem, you should be able to get a cert that states that.
    Same as any other tool.
    Calibrated and documented about the condition.
  • We have a few pieces (micrometer and a couple of calipers) that are "out of tolerance" but well within our specification. The calibration lab recognizes this and puts a "limited calibration" sticker on it. If questioned by an auditor, you just show the report that explains what's out and why it will not cause rejected material to be accepted. I have never had a non-conformance (major or minor) from an auditor using this practice.
  • Thanks, good to know.
    We have a few pieces (micrometer and a couple of calipers) that are "out of tolerance" but well within our specification. The calibration lab recognizes this and puts a "limited calibration" sticker on it. If questioned by an auditor, you just show the report that explains what's out and why it will not cause rejected material to be accepted. I have never had a non-conformance (major or minor) from an auditor using this practice.
  • Lets say for example, hexagon calibrated your cmm, and found that it is OOT. For example one of the axis is reading .00008 over the machine spec. And they say it may take thousands of dollars to bring in spec. What does it mean to you? Does it mean that they will put out of service sticker? Does it mean the machine must be in spec, even if most of your tollerances are +\_.01 , no less?

    What would you do if it was up to you? Would you, hire Hexagon to tear apart the machine to rebuild it and bring it in spec? or would you still use it, since your tollerances are wide open, and .00008 wont affect your results much?

    Are you saying Hexagon told you that your machine is out of spec .00008 and they cant tune it in and has no idea what's wrong?
  • Are you saying Hexagon told you that your machine is out of spec .00008 and they cant tune it in and has no idea what's wrong?

    No no and no. This is just hypothetical question. Not realted to Hex at all. I was just curious what happens if the cmm is oot
  • No no and no. This is just hypothetical question. Not realted to Hex at all. I was just curious what happens if the cmm is oot

    I cannot speak for Hexagon but I have heard that other companies will give you certificate that states that the cmm meets your manufacturing requirements.
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