Part Variation for Gage R&R of Vision Inspection system

I

inferno10

#1
I am preparing a gage r&r to qualify a pre-programmed inspection routine on our vision system. I decided to setup an 18x2x3 gage r&r to test the full capacity of the routine.

Our current process yields lots containing between 14-18 parts. For this study, should I sample from a single lot, or sample from multiple lots?

Thanks for the advice!

- Jason
 
Elsmar Forum Sponsor
G

George Weiss

#2
Re: Part variation for gage r&r of inspection system

The R&R involves the:
[ AV ], Appraiser Variation
[ EV ], Equipment Variation
[ PV ], Part Variation
to get the:
[ TV ] Total Variation (formulas at the link below)
I would expect that changing the batch source for the parts would be a good method to gather Part-Variable data, Batch to batch. Within batch data would mean, of course not going bath-to-batch sampling. I am not the person to know/express the number of samples or how many batches to look at.
Along with other Elsmar cove threads, there is an R&R guidance write-up is @
http://www.sixsigmaspc.com/dictionary/RandR-repeatability-reproducibility.html
 
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