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Another ASME profile question Ugh!

markoor99
I know this gives people brain aneurisms as it does for me, so I'm just asking for opinions. I've looked at numerous threads on this to the point my head is going to explode. I have a blueprint that says, "Blueprint interpretation, ASME Y14.100" in the notes. Underneath that it says, "Dimensioning and tolerancing: ASME Y14.5".

I thought in ISO you doubled the worst points deviation. But my AMSE 14.5 is doubling it in GEOTOL. What is correct these days? Double it or just min-max? By the way I
'm running 2020 R2. Was this changed in later version?

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  • Don't use PC-DMIS ASME profile, using feature control frame characteristics. The software outputs the wrong value, and the precise flavor of wrong changes with every other release. Note that I I can't swear that it was never correct in any version, having not dug into every single service pack.

    IF you want to use FCF profile in PC-DMIS, switching to ISO within the software, did calculate correct ASME values, at least in PC-DMIS 2016-2019.
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  • Don't use PC-DMIS ASME profile, using feature control frame characteristics. The software outputs the wrong value, and the precise flavor of wrong changes with every other release. Note that I I can't swear that it was never correct in any version, having not dug into every single service pack.

    IF you want to use FCF profile in PC-DMIS, switching to ISO within the software, did calculate correct ASME values, at least in PC-DMIS 2016-2019.
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  • in reply to Kai Kendall
    The best sure-fire method to calculate profile correctly in ALL versions of PC-DMIS is to set alignment appropriately, measure a set of points, report "T" values, and sort, either via variables in PC-DMIS, or export to excel and calculate profile in that program. That way there's no confusion between versions, and latest undocumented enhancements within PC-DMIS.
  • in reply to Kai Kendall
    I commonly do individual points since I like to see where the problems are coming from exactly. But this company in particular would throw a fit if they see ISO on the pdf report. Regardless of the output. And for that matter, the output is the same. We have a meeting with them today so I can explain why they would want individual points. They can easily take the worst deviated point and double it themselves.
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