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Tip Calibration Process

Smasherofprobes
Hello all, could you please verify that I am calibrating my tips properly! I recently calibrated my machine and my results seem offset in one axis. (Calibration sphere comes off the table after every calibration)

I start by selecting A0B0 only ( Say Yes, Sphere has moved) Calibrate it by itself

Then I Select all tips (Including A0B0) and say No, Sphere has not moved)

The second time I calibrate my tip set should I be including A0B0? Also, Do you guys have a separate probe file called something like "Master probe" with just A0B0? or do you calibrate it within the tip set.

I haven't been on a machine in many years and I'm trying to remember the correct way to do this.

Thanks and my apologies if this is a re-post.
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  • For "Master" probe calibration clarification directly from Hexagon, log in to the support portal, and search for "Relating Multiple Probes". It is an OLD 6-page PDF file that goes back to wilcox days. It goes over the details of how and why you need to maintain a master probe with simplicity & great clarity.

    As for your PH9 probe angles failing: High standard deviation is indicative of false-trigger hits during probe calibration.
    --When you have false hits at any angle other than T1A0B0, it typically means one of two things.
    1: Either your probe build is too long or too heavy for a TP20 sensor (a 20mm extension with a 2x20 stylus should be completely fine at any angle), which leads to next thing,
    2: Your TP20 probe module is likely worn out.
    --Try the same probe build with a known good TP20 probe module. Renishaw TP20 modules are designed & documented to only last about 2,000,000 hits, which in my world doesn't even last 6 months (hence why we went to TP200's for all our machines).
  • in reply to louisd
    That relating multiple probes PDF was a great read, thanks for that Louis. I finally understand Slight smile
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