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CMM Health

Good Afternoon Everyone,

We are starting a CMM health initiative to help trust the CMMs. As of right now, operators can only run parts and the probe calibration program. Management is looking into something like check an artifact of known size weekly or even daily. I have (4) 454 SFs with (3) with manual heads and (1) with an indexing head, (3) Tigos with fixed analog heads, and (1) 7.10.7 Sf with an indexing head.

What kind of artifacts do you all check on a regular basis for CMM confidence? Rings gages? Gage blocks? An actual machine'd part? If its a machine'd part, do you check on 1 CMM to compare to other CMMs? OR does the human check it with hand tools and then looks for correlation? I know Hexagon has the swift check thing but I think its only for indexing heads so it won't work with all my CMMs.

Any advice? Thanks.
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  • pretty sure it has a good, clean bill of health. Yes, it takes a LONG time to do this (almost 7 hours today) but I have a very high level of confidence in the machine. These tests get run (usually) within the week after the machine is calibrated, then any time I think there may be an issue (VERY rare!). BUT, they all get run if the machine gets whacked in any way (usually due to some floor monkey doing something he shouldn't), but also in case of operator error (had a 2nd shifter run the column into a fixture).