Profile evaluation

[[Cl...]]

I am evaluating two curved surfaces that have a profile callout of .002 (-.000/+.002) to -A- & -B-. If I
use outwards into infinity, I get similar results to what the overlay shows. Can anyone recommend a
more appropriate evaluation, or is this the way to go?

[[Jo...]]

I would think Bilateral with unequal distribution would be what you want. I think you put the total tolerance, and in your case the other box is would be the same number, and you select which side of nominal it applies the zone.

[[Cl...]]

I tried that initially, but its showed bad (.0021). The overlay had it well within tolerance.

[[Ro...]]

If you have any 'measurable points' on that surface, check your cad model to make sure its drawn the way it should be, and not +.001.

[[Da...]]

Sorry for hijacking the thread, but, can someone please paste an example of inwards or outwards to infinity callout (ASME or ISO)?

[[Ma...]]

Somewhere in manuals or on this forum was recommended to use bilateral and never use onsided. Perhaps onesided will tell you only deviation from nominal zero ( aka on CAD view evaluation you get same deviation ).
Bilateral will tell you deviation=0 if you are in middle of tolerance ( calculating as diameter, so deviation on CAD view *2 )

Example - you measure part exactly as CAD model - onesided = .000 / bilateral = .002
you measure part in middle of tolerance - onesided = .001 / bilateral = .000
you measure part at end of tolerance - onesided = .002 / bilateral = .002

I hope i get it right.

Edit: there is onesided outwards / inwards of material and opened out / in.
Onesided out/in will get same results as bilateral. Opened out/in will give different result

[[Ro...]]

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I got no idea why anybody would ever use either one of these callouts.

[[Me...]]

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Those options could be used if you were using the "Surface Interpretation" method described in ASME to inspect the position of a hole / pin modified with MMC or LMC. For example, if you were inspecting a hole modified at MMC, "Inwards to Infinity" would be selected and the tolerance would be the radial difference between the nominal geometry and virtual condition. Only the largest value that adds material is reported. If all points are minus material, the result will be zero.

[[Aa...]]

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They could effectively be used to simulate a MMC or LMC Position combined with a profile See Section 8.8 of Y14.5-2009 (Page175.)

[[De...]]

Realizing this thread is over 2 years old now, I hope you got this sorted out. I know that when profiles are not fully constrained on the print the alignment can be tricky. Zeiss does have an e learning series talking about this and what you need to do for it to work properly.