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Xact Measure problem

slesholdofthreep
Has anyone had problems with Xact Measure TP dims? I have various parts with MMC on the DF as well as the Datums. As may be expected the DF and the datums all have different size tolerances. When setting up the dimension I tolerance them correctly, but once created the datum tolerances default to the DF tolerance. I have assigned variables for tolerances with little success. In fact I can type in the correct tolerance right into the dimension in the edit window and.. pfft... it reverts back to the DF tol. I am attempting to use this "improved" method because the hexagoon's say that legacy TP dims don't account for MMC on the datums correctly. WTF!

I am running V4.2mr2, but I have seen this in 4.1 and 4.2mr1.
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  • Jan,

    If one does not need to output stats, is it acceptable to select multiple features to evaluate in a single Xact Measure dim? In other words, will that practice adhere to 5.3.6?

    Ah, good question!

    I can't say for sure. Only Hexagon can tell you this.

    My gut feel is that if you have simultaneous requirements, you should use the simultaneous evaluation. I think that if you use multiple features and use them in a single Xact Measure dim, all wil be individually evaluated against the DRF (they will all get there own unique datum shift).

    But I have never tried to do this specifically.

    What I DID do is measure points and evaluate all them for surface profile. You will get the MAX and MIN, which is corresponds with the maximum and minimum if you evaluate all individually. However, I never tried this with TP.
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  • Jan,

    If one does not need to output stats, is it acceptable to select multiple features to evaluate in a single Xact Measure dim? In other words, will that practice adhere to 5.3.6?

    Ah, good question!

    I can't say for sure. Only Hexagon can tell you this.

    My gut feel is that if you have simultaneous requirements, you should use the simultaneous evaluation. I think that if you use multiple features and use them in a single Xact Measure dim, all wil be individually evaluated against the DRF (they will all get there own unique datum shift).

    But I have never tried to do this specifically.

    What I DID do is measure points and evaluate all them for surface profile. You will get the MAX and MIN, which is corresponds with the maximum and minimum if you evaluate all individually. However, I never tried this with TP.
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