Micrometer Calibration Using a CMM

Ninja

Looking for Reality
Staff member
Super Moderator
#11
Sure it is possible, but at what cost, how much time, fixturing, alignment, interpreting data, repeatability.

So many questions.

Gauge blocks are so much easier, faster.
To the OP: I think its been made clear above that the CMM method is ok, but also that it is unconventional and very possibly less useful and less efficient.

Back to my usual soapbox...after the compliance question is handled, it's about the money.

Kales mentions (and I agree) that gage blocks are faster and easier. Can this be monetized? How much labor would you save by using gage blocks, and how much do the gage blocks cost?
Then factor in the increased accuracy (assumed since I don't know your acceptance criteria) and monetize the potential risk of using the 'questionable' accuracy of calibration by CMM.

Does the bottom line $ say stay with the CMM, or switch to gage blocks?

Data proves points much more easily than passion. And identifying a money waste or risk is typically compelling data.

JMO...
 
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D

dengel1

#13
I am sure that the auditor will want to see the calibration procedure used for this calibration.
Who wrote the procedure?
What standard is it based on?
Where did the calibration tech receive the training to perform this calibration?

There is a whole myriad of questions that I would ask if I were performing an audit and saw this. It looks to me like someone is stretching a job out.
 
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