[Ry...] Posted January 25, 2023 Share Posted January 25, 2023 Hello All, I have a question about this profile that I am trying to measure. After inputting my feature that the profile is calling out for and my datum, the characteristic is displaying as pink and says "Evaluation of characteristic not possible". What am I missing here? Thanks, Ryan Link to comment https://qualityforum.zeiss.com/topic/8812-profile-issues/ Share on other sites More sharing options...
[Ro...] Posted January 25, 2023 Share Posted January 25, 2023 If the 2 planes are perpendicular to each other then -A- is unable to constrain the location of the plane. This is similar to the post that Tom Oakes made on profile. viewtopic.php?t=10915 Link to comment https://qualityforum.zeiss.com/topic/8812-profile-issues/#findComment-39806 Share on other sites More sharing options...
[To...] Posted January 25, 2023 Share Posted January 25, 2023 Please sign in to view this quote. I think your problem is that you can't do a profile of a geometry feature to 1 datum feature in Calypso. I believe you must have the Freeform Surfaces option and use a Freeform Surface Feature. However, in years past, I seen/heard of people populating the Secondary and Tertiary Datum Features with the same feature used in the Primary but I'm not convinced this is valid. You'll get a result but I'm not sure it is correct. Link to comment https://qualityforum.zeiss.com/topic/8812-profile-issues/#findComment-39808 Share on other sites More sharing options...
[Th...] Posted January 25, 2023 Share Posted January 25, 2023 Please sign in to view this quote. Yeah, surface profile requires either no datum features or all 3. Wouldn't a GBF alignment suffice for this? Set it up with A and the relevant degrees of freedom unconstrained, then evaluate the profile using that. Link to comment https://qualityforum.zeiss.com/topic/8812-profile-issues/#findComment-39810 Share on other sites More sharing options...
[To...] Posted January 25, 2023 Share Posted January 25, 2023 Please sign in to view this quote. I don't even think this is an option without FFS Link to comment https://qualityforum.zeiss.com/topic/8812-profile-issues/#findComment-39812 Share on other sites More sharing options...
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