If a Blueprint calls for ASME Y14.5 wouldn't this be the standard rules apply. How would I know if and when to apply ISO? I have yet to see anything on a blueprint stating this. The reason I bring this up is for the good old Profile callout. Before I make an argument, I want to cover all my resources. Customer already claims in an email that PC-DMIS is not capable of doing this. I and everyone on here already that's horse_S_H_I_T. But its Friday and I'm ready to P_I_S_S someone off
I have been taught for many years that the correct ASME way to report profile is to double the worst reading (for bi-lateral) profile tolerance. Its a matter of reporting the results in the same context as the tolerance. For instance, position for a hole location has a diametrical tolerance. But you calculate the radial deviation (hypotenuse) THEN multiply by 2 so that it is reported
in the context of the diametrical tolerance. Similarly, bi-lateral profile is toleranced as a WIDTH (like positions diameter), but you find the greatest deviation on a side (like positions hypotenuse) THEN multiply by 2
so that it is reported in the context of the WIDTH tolerance.
This video explains it well:
https://www.youtube.com/watch?v=lWvYH8wn5Ac ... if that link doesn't work go to youtube and search for "GD&T Tip - Reporting Profile" by Tec-Ease.
