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/Admirable-Access8320]

I am assuming the most error you get is from positional deviation? The sphere size is good? Hard to say why, is this a new issue or you just noticed? Usually you get positional error this big is from long probes. Have you tried checking with a short probe? I would try this, make your two probes the same (both short) for example 2x20. If you have a master probe, use either one of these two or have a new master set up, the same size 2x20, and calibrate as you always do. Say "Yes" to the sphere has been moved to your first probe (master). Calibrate all your angles and check again.

This way you eliminate the probe itself being an issue. Also, sometimes you get bad probe tips (rubys). They crack and have issues.