R
RMedrano
Yes, the OD tolerance is clearly outside of the capability of the process. The out-of-roundness is eating up over 50% of your tolerance!! The ID would have been OK, except for that blip at the end. Was it real? Anyway, now you can say without exception that you are stuck with sorting the OD - unless someone that knows your process can make some improvements. If that ID had not had the one bad data point, you could have SPC'ed the ID one very 10 parts or so and been done with it. Any theories why the ID is so much better than the OD? Any lessons learned there?
Do you feel as if you really know more about your process with this charting technique than the ones you have tried before?
Dont know, Im going to show this to a couple of the tooling engineers and see if it helps them. They are the ones trying to improve the process.
Yeah that flyer was real on the ID, at least as far as i know. I asked for confirmation of the part, but like I said before this process is currently in another facility 40 miles from here, I havent gotten a reply to my inquiry yet.
Above all else you have helped me understand the how/why its not really possible to get a true (normal) capability analysis on this.