I have a 2 prt question.
- can R&R be performed on a profilometer, can and should be?
- is the standard profilometer is OK to be used on a curved surfaces?
Im sure you can do a R&R with a profilometer but there is going to be many variables that change from person to person.
We have used on larger circular surfaces because the probe arm has up and down tension which rides along the surface (now whether or not you are suppose to I don't know).
I am not sure, but I think if the travel can accommodate the contour than it would work.
Like I said above, I have used on circular features but I have never been able to prove out if it is accurate.
The ANSI standard will tell you the cut-off length as well as the other settings. Don't just change the settings until you get a number you like (we had a supplier do that). It should be specified on the drawing. "Usually" if it doesn't specify a specific setting, the standards are followed. I think it ANSI B46.1. The drawing standards are ANSI Y14.36. If you need the metric standards, I'm not sure. From personal history, if it doesn't specify on the drawing, ask the engineer (if they know them selves!).
I've always been told that an R&R on a profilometer would be a waste of time. Your're never going to hit the same place twice and the stylus has a real potiential of changing the surface.