Speaking of Profile of a surface

[[Ne...]]

Have a question on reporting Profile that does not reference any datum. In Calypso, can this be done? When I choose Profile and try to clear out the Datum Ref. frame it does not seem to take (so just reference to my print alignment?) Not sure how to correctly evaluate to print. If I'm missing something that is right in front of me, please let me know. Thanks for any help on this.

Profile.PNG

[[Br...]]

Short answer, you can't. Your print has the profile incorrectly applied. Unless ISO has some weird way you can reference profile on a dimension that doesn't even look to be a feature of size like that, maybe its valid. But if this drawing is Y14.5, then the Profile tolerance must be applied directly to the surface. If you just want to evaluate both of those surfaces to themselves, you could create a single FreeForm surface out of the two planes. Then use that in your profile characteristic and select "No Datum Reference Frame" from the drop down about where you input your datums.

[[Me...]]

That is a correct call out however, if no datum reference frames are included, then that symbol refers to a tolerance of FORM.

From "Inspection-oriented Tolerancing Size, form, and location"
The Profile-of-a-surface tolerancing describes a tolerance zone around any surface. All surface points of the toleranced feature must lie within two freeform surfaces that surround spheres with a diameter. Here again the curve FORM is most often described.

[[Ne...]]

So if I use FORM to report, that will be the same as Profile when I add .002 tolerance? We do not have a Curve licenses, so just scan as much as possible? Is there a way to report both planes together? Under special geometries, the free form surface is not activated on this software? Thanks in advance..

[[Br...]]

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It absolutely is not a correct Call-out. A profile tolerance must be applied to a surface. This one is applied to some distance dimension. The leader should point directly to the surface the Profile tolerance is applied to. This drawing is unclear as to what surface the Profile is applied to.

This practice is not supported by ASME Y14.5
ASME Y14.50-2009 Para. 8.3.1.1
"...Where an equally disposed bilateral tolerance is intended, it is necessary to show the feature control frame with a leader directed to the surface or an extension line of the surface, but not to the basic dimension."

Feature control frame placement depends on the feature being controlled. Position controls the location of features of size, so placing a position tolerance with a size tolerance makes sense. Profile on the other hand controls surfaces. The dimension that this FCF is applied to isnt even a feature of size. It's just some ­± dimension that has no support with Y14.5. So in that regard it really makes no sense to place it there because the standard doesn't even recognize it as a valid tolerance.