extension of principles - composite profile (non-uniform)
extension of principles - composite profile (non-uniform)
(OP)
Can anyone tell me a reason why the attached would not be allowed by ASME Y14.5-2009?
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extension of principles - composite profile (non-uniform)
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RE: extension of principles - composite profile (non-uniform)
RE: extension of principles - composite profile (non-uniform)
Say the upper frame values are
[ (PoS) | .010 (U) 0 | A | B ]
You would then have a .0025 area of uncertainty where the .005 uniform zone doesn't overlap.
I don't know if it's forbidden, but there's certainly a risk of misapplying it.
Edit: Actually I think I was wrong, as my coffee starts to kick in. Given that you've reduced the second segment to only reference a primary datum, I suppose it is likely only tolerancing form, and not location, whereas location is only controlled in the first segment. That likely works out fine in the situations I imagine applying it. I'll leave the first part of my post in case it helps discussion any. But I think I mostly just jumped the gun.
RE: extension of principles - composite profile (non-uniform)
I agree with JNieman in that since it is composite profile the lower zone is a refinement of the upper and it must lie inside the Non Uniform boundary. Us of the U symbol is recommended too
Certified Sr. GD&T Professional
RE: extension of principles - composite profile (non-uniform)
RE: extension of principles - composite profile (non-uniform)
RE: extension of principles - composite profile (non-uniform)
Certified Sr. GD&T Professional
RE: extension of principles - composite profile (non-uniform)
Additionally, I see no reason the lower segment tolerance zone needs to be completely contained within the upper segment non-uniform tolerance zone. In fact, since the lower segment tolerance zone is free to translate and possibly rotate relative to the upper segment non-uniform tolerance zone, you could probably get away without any overlap at all initially. I agree with JNieman that this might start some interesting fights though.
pylfrm
RE: extension of principles - composite profile (non-uniform)
RE: extension of principles - composite profile (non-uniform)