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Resolving corrupt probe calibration result

Can anyone advise how to fix a suspect probe calibration result?

I first noticed the positions reported by (2) different probes are off each other by mm.

In the calibration history of the one I see some major change in geometry compared to a few days back.

For a 1MM probe the calibration result went from
T1A0B0 MEAS X 0.180 Y -0.319 Z 236.637 D 1.00 PrbRdv-0.000 StdDev 0.000
to
T1A0B0 MEAS X 3.381 Y 2.000 Z 224.091 D 1.00 PrbRdv-0.000 StdDev 0.000

No matter how many times I recalibrate I can't seem to get it to restore to the original range of values.

And the error in position of a point measured by the (2) probes matches the large non-zero components of this 1mm probe.

Other notes
Often the sphere is not found in the right place and I must answer yes to 'Has the qualification tool been moved'. Yet the sphere has not moved. We only have (1) sphere defined.
I replaced the physical tip but I am sure the geometry of the 1mm probe otherwise did not change.  [I don't see why the Z value changed so much.  Could I have replaced with a slightly shorter/longer tip?]
The SH25-1 plate is sitting properly on the SM25-1 module.

I see the reset tips button available but we have many A, B angles defined. Any ideas?

Parents Reply
  • The Master probe is the mathematical correlation between all the probes. It's always perfect, and all other probes are measured in relation to it. This is how the probes maintain their coordinates relative to each other. When you calibrate the probes individually, they are calibrated to themselves, not each other. This is why they don't match. You NEED a master probe. Search this forum. There are lots of posts on this. 

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