Question about Zeiss Eclipse Calibration
Hi guys. I'm running a Zeiss Eclipse on Calypso 2016 (I know... Old 😢) and I've noticed that calibrating with the sphere is... Not good. All of the angular rotations are off by several thousandths from each other after calibrating on the sphere (say 0,0 orientation is Z0, 90,90 is .008" different when measuring the same plane). To combat this, for the past year or so I've gone to manually calibrating using a precision ring, and checking the diameter, X, Y, and concentricity against the ring as measured with the master probe. I try to keep as much of my programming as possible in the 0,0 orientation for this reason. Sometimes I do need to articulate the head, and in those cases I do the same calibration with the ring on its side, except I don't use the master probe, I just adjust the two angles of the probe to match each other.
My question is... Why is the sphere calibration off by so much? The machine is very well maintained and calibrated by Zeiss approved techs. It holds it's calibration fine once it's set, but I cannot get accurate measurements relying solely on the sphere. Is there a better way to combat this issue? Is it well known? Or is there perhaps wear somewhere that I'm not thinking of?
Additionally, I recently replaced the TP20 Body, as most of my modules have been "clicking". Most of the modules are about a year old or less. Unfortunately, whenever someone else runs the machine, it tends to get crashed and I'm left trying to salvage the modules by adjusting the pins (pushing them back in after crashes. I actually learned that on this sub). I'm having seriously diminishing returns on the pin adjusting helping the modules stay connected though (as in, not clicking during a run. It's the same click that a crash produces). Is there anything else I can do to help this issue?
New cmm is a non starter. Trust me, I'd KILL for a new one, but it's not even worth the argument. "it doesn't make chips so it doesn't make money".
Thanks all.