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angularity of a constructed 3D plane

slipper57
I have to construct a center plane between two planes and I get it, that I have to click on dist and construct a 3D plane, then call that my datum (we'll call that datum B) . After I construct the 3D plane, I have an Angularity call out, to the top of the part (we'll call that datum A). I have a MAX Material on the angularity call out also. (Dimensionally from the two planes) . My issue is.... on the CMM print out, its giving me the 'bonus', the correct width for the bonus, but its telling me that the angularity is OUT of tolerance by .100 plus?

Same with the other direct... that I construct dat C and the angularity call out is from A and B datums. Datum C is constructed the same way as datum B... 3D dist.

ALSO... when I look at my "actuals" / hits on the CMM... I do not see how these angularity call out can be OUT .100.

Any help will be appreciated! I'm sure I am missing something simple. Thanks
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  • Maybe construct the mid plane from mid points. A constructed mid plane is a perfect plane, so without real boundaries that would used to calculate the angularity. Just a thought.
  • in reply to JEFMAN
    This would be my method.
    Make the mid points from the points you measured on each plane.
    Construct the plane from the points.

    Other softwares would allow this and do it, but they are using what the software THINKS would be points if they were actually measured, so is that better? Who knows.
    Easier, absolutely.
    Better (equally accurate)? Ehh. Guess it depends on the programmers writing the software package and how close to true form the real planes are.
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  • in reply to JEFMAN
    This would be my method.
    Make the mid points from the points you measured on each plane.
    Construct the plane from the points.

    Other softwares would allow this and do it, but they are using what the software THINKS would be points if they were actually measured, so is that better? Who knows.
    Easier, absolutely.
    Better (equally accurate)? Ehh. Guess it depends on the programmers writing the software package and how close to true form the real planes are.
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