Hello,
We have multiple CMMs on our site. One of them recently a Global Advantage is not repeating its calibrations. Example is , I can calibrate ,run my master part ( Which is normally around .002 deviation on average. 9 T-values that is checking for height ) and get -.0013 deviation on average. I recalibrate again and re-run the master part again and get .004 deviation. So just from recalibrating I have a .005 swing. I have shut down, cleaned , inspected the machine, tips, calibration sphere. We have re -run the same part 5 times loading and unloaded with same operator and get the same results 5 times in a row.
We did just have our yearly calibration done.
If I check my run charts they show before the calibration was done that we didn't have this issue.
What could cause this issue?
We have multiple CMMs on our site. One of them recently a Global Advantage is not repeating its calibrations. Example is , I can calibrate ,run my master part ( Which is normally around .002 deviation on average. 9 T-values that is checking for height ) and get -.0013 deviation on average. I recalibrate again and re-run the master part again and get .004 deviation. So just from recalibrating I have a .005 swing. I have shut down, cleaned , inspected the machine, tips, calibration sphere. We have re -run the same part 5 times loading and unloaded with same operator and get the same results 5 times in a row.
We did just have our yearly calibration done.
If I check my run charts they show before the calibration was done that we didn't have this issue.
What could cause this issue?
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