J
joonasan
We made a GRR study for measuring gear outside diameter. We had too little information about GRR so the study failed. The part variation was bad, only 13,4%. That means we got very bad results for %GRR (GRR/TV).
I understand now that with better PV we will get more acceptable results. We could continue the study with more samples but I was thinking if we could use our history measurement database to calculate part variation, instead of using the GRR study's PV? I'm a little confused how and if this can be done.
However %GRR based on the tolerance(0,063 mm) is still too bad, so we need to do something in any case.
I understand now that with better PV we will get more acceptable results. We could continue the study with more samples but I was thinking if we could use our history measurement database to calculate part variation, instead of using the GRR study's PV? I'm a little confused how and if this can be done.
However %GRR based on the tolerance(0,063 mm) is still too bad, so we need to do something in any case.