Can someone explain like I'm 5? I cant wrap my head around the differences between opposed points, circular elements, local size and UAME. I just want to report the diameter of a hole. I understand that a cylinder will have some taper and it could be useful to report the max and min Ø in that case. Thank you guys.
In your example, UAME would be the size of the fully formed plug that would fit into the gage. Local Size would be the maximum size of a two point measurement. (Think Telescoping Gage). Opposed points are another name for a two point measurement. In order to be fully compliant with the Y14.5 standard both local and UAME should be reported. In practice only one or the other are often reported.
Circular Elements are just slices of a cylinder perpendicular to the axis.
In your example, UAME would be the size of the fully formed plug that would fit into the gage. Local Size would be the maximum size of a two point measurement. (Think Telescoping Gage). Opposed points are another name for a two point measurement. In order to be fully compliant with the Y14.5 standard both local and UAME should be reported. In practice only one or the other are often reported. Circular Elements are just slices of a cylinder perpendicular to the axis.
Since the difference between UAME and local size in my measurements is 0.0003, what would you do in the case that one was out of tolerance and the other not? I feel like UAME would be more useful than local size based on what you've said.
Time for a long heart to heart with the designer, production and management with published meeting notes and/or agreements/ fiats. As I said in my earlier post most companies will only do one check or the other. Agree that in many cases the UAME is more useful but what do you do when there's a large bulge in the hole diameter. How bad is too bad?
