I do not. Minitab supports the expanded R&R, but any software that can perform an ANOVA can be used to duplicate it. This is a link to the Minitab method.That is really helpful, Miner
Do you have a template to perform expanded study?
You got my point right as there are 15 nest to measure parts.
1) I would start with a random sample. If the effect is insignificant, leave it at that. If significant, a separate study of all nests and analyzed by ANOM would be recommended. In my experience, the multiple nests of an ATE (Automated Test Equipment) are not built to the same exacting standards of calipers or micrometers.There are a couple of things about this gauge that concern me.....and I'm not really sure how to address them.
1) Should an R&R be performed on each nest? I don't think it is required, in the same way that you don't do an R&R study on each caliper in your shop - they are considered a 'family' of gauges.
2) Should parts be moved from nest to nest during the measurements? This will affect both repeatability and reproducibility. However, I'm a little concerned that this movement of the parts from nest to nest may end up MASKING some issues. I would definitely defer to someone (like Miner) who has more extensive experience with something like this.
There are a couple of things about this gauge that concern me.....and I'm not really sure how to address them.
1) Should an R&R be performed on each nest? I don't think it is required, in the same way that you don't do an R&R study on each caliper in your shop - they are considered a 'family' of gauges.
2) Should parts be moved from nest to nest during the measurements? This will affect both repeatability and reproducability. However, I'm a little concerned that this movement of the parts from nest to nest may end up MASKING some issues. I would definitely defer to someone (like Miner) who has more extensive experience with something like this.
See my post #6 above.Your points are valid, because just using standard MSA will not help me understand variations in play.
Any thought Miner
I could go on for a long time about what should be done on ATEs, but is usually not done. Calibration of all nests is just the beginning. Almost never are they calibrated as a "measurement system." They will usually isolate the measurement device from the system and calibrate the device in isolation, which is wrong.…and like any gauge there should be some level of ‘calibration’ for each nest. Just as every caliper is calibrated.