We are trying to 'validate' the scanning capability of our CMM by doing a Gage R&R on an extremely simple part design. These parts were special made for this purpose. It's a 6" x 4" x 0.25" thick aluminium plate with a 1" nominal diameter machined in it. We had 10 of these parts made with the hole size, X and Y locations randomly varied within +/- 0.005". (Our typical part tolerances are +/-0.005")
Program was done only using scanning for the alignment and the location/ diameter of the hole. The Gage R&R failed in the Y direction (somewhere around 15%). Used the default settings for the scan. Calibrated the scanning probe and lower matrix just prior to running the Gage R&R.
Are there any recommended best practices for this given the part/ all scanning method constraints that I'm under? Any tips/ tricks to improve repeatability? Used PC DMIS 2017 R2 on the original attempt. Have 2018 on the CMM if that would help. Could probably get 2019 if I twist a few arms. I had the scanning training 4 or 5 years ago but never used since getting a scan head fell thru at the time. Another programmer with about 2-3 years experience has had the training but has not used since. I'm sure we lost quite a bit of what we were taught just because we haven't needed to use it.
Program was done only using scanning for the alignment and the location/ diameter of the hole. The Gage R&R failed in the Y direction (somewhere around 15%). Used the default settings for the scan. Calibrated the scanning probe and lower matrix just prior to running the Gage R&R.
Are there any recommended best practices for this given the part/ all scanning method constraints that I'm under? Any tips/ tricks to improve repeatability? Used PC DMIS 2017 R2 on the original attempt. Have 2018 on the CMM if that would help. Could probably get 2019 if I twist a few arms. I had the scanning training 4 or 5 years ago but never used since getting a scan head fell thru at the time. Another programmer with about 2-3 years experience has had the training but has not used since. I'm sure we lost quite a bit of what we were taught just because we haven't needed to use it.
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