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using .2 and .3 probes for the first time

Hey Guys im having a lot of trouble trying to measure with .2mm and .3mm probes. Iv turned down the touch speed to 2 im not scanning. im only measuring small circles with 5 to 8 hits. It seems like I have to recalibrate them 1 to 2 times a day.
I have a large cylinder with flat bottom holes in its OD wall. In the holes are ball bearing that are pressed it. I only have a small amount of land available to measure the hole. I can measure 1 to 3 parts then I will start to have alarms saying the probe became unseated or that it couldn't retract. Usually once I calibrate it will work ok. Sometimes Ill have to recalibrate with the master probe. As you can imagine this is eating up a lot of time. If anyone has any advice I would appreciate it.
Parents
  • I recalibrated, reset all the tips before doing so. Seems to be running OK. We are a small shop in a pretty rough building. We are moving soon to a bigger better building. Could temperature fluctuation be the problem? We do our best to control temp. but its certainly not perfect.
Reply
  • I recalibrated, reset all the tips before doing so. Seems to be running OK. We are a small shop in a pretty rough building. We are moving soon to a bigger better building. Could temperature fluctuation be the problem? We do our best to control temp. but its certainly not perfect.
Children
  • TCOE is really insignificant when you have smaller features.
    Vibration: (forklifts, machining operations, trucks, air compressors, etc) can be a major factor as well.

    The real issue is reproducibility of a feature that has been subjected to post-processing. Pressing that ball into the cylinder is absolutely misshaping that cylinder wall, and your ability to have part A measure similar to part B relies heavily on how that cylinder wall was (or was not) damaged during that process. I bet you can see -with the naked eye- rifling or gouge marks around the cylinder walls yes?

    How does one meet dimensional or locational controls of a diameter that is eccentric?!