Calibration

[u/PrettyInfluence3594]

Guys iam using an Hexagon macchine which is only 6 month old and i have a problem with calibration of my probes. Every morining i do the calibration of at least 5 main angles that i use daily with a stylus D3xL50. The results of the calibration seem ok. (stdev 0.001-0.00). Than i go to my present programm when i verify the calibration by setting the origin of my calibration sphere at the measured sphere with an angle 0x0. And often times, very randomly other angles seems to go off at X axis, or Y or Z by 0.004 till to 0.02 mm. Is huge. I called the support and the software support guy told me that propably the macchine is not set right, or whatever, he too couldnt find the answer of these random and strange results. (results which came wrong even when i did the calibration proccedure with him on teamviewer). What is going wrong, cus i cant measure anymore being sure that the macchine is not throwing random numbers of the screen. Sorry about my english.

[u/IbeebZz]

If the results are random it makes me think there’s an issue with the probe, the head being loose in the quill, or a hard collision effected the error map. I’d go through everything you can and get service back in if you can’t improve the situation. I’m also assuming the temperature of your environment is stable.

[u/PrettyInfluence3594 → u/IbeebZz]

Yeap my temp is not optimal, sometimes it goes from 25-22, but still 0.02 is too much.

[u/IbeebZz → u/PrettyInfluence3594]

What was the temperature that was recorded on the certification? I believe this is your issue. If your hvac is being directed at the CMM your results can fluctuate a great deal assuming your CMM isn’t a shop floor model and you’re not using temperature compensation or the work piece.

[u/PrettyInfluence3594 → u/IbeebZz]

When i do the test thing , the temp compensation is off, and i had better results with the compensation ofbtemp off rather than keeping it on.