Probe Calibration Crash

[derekvegeta]

I've got a weird one today: I calibrated my Master at A0B0 and several other probes. Then I get to my 1by35.5 Shank probe: A0B0 goes fine. A90 B0, A90 B90, A90 B180 all go fine. Then, A90 B-90 comes along and plunges straight down on the cal sphere about 3/5 of the way up the stem/shank. I have no ideas why this could be. The attached image has my settings for the calibration.

[R2ah1ze1l]

Have you tried 'reset tips to theo' check box?

For many different reasons, probes have seemingly lost/shifted information. Often that check box will clear the issue up.

[derekvegeta]

What exactly does Reset Theo do? Is it just for the angles selected that it works? Would me using it everytime be an issue?

[Don Ruggieri]

When you first define a probe, the software uses the Theoretical probe offsets to drive to and around the calibration sphere. Once a probe is calibrated, it has a more accurate definition of the offsets, and uses these new values to re-calibrate the sphere each time after that. The "Reset Theos..." tells it NOT to use the prior calculated offsets but instead to use the probe definition's nominal offsets.

[A-machine-insp]

I've had this happen before. Turns out it was a corrupted probe file. Shut down DMIS, go into your probe files folder and delete your 1by35.5 probe file. Restart DMIS and the measurement routine, F9 your loadprobe line for the 1by35.5 probe and rebuild it then do the calibration procedure again. Had fixed it every time for me.

[derekvegeta]

Welllll crap. Alright, I'll try that after messing around with Reset tips to Theo