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Position nominals - Datum reference or current alignemnt

Hello,

I have a problem, we measure the position of the pin and more precisely the position of the pin width. 3-3.2mm pos. 1 (M) DEF.
In order to measure the pin, we have to base it on another element and turn the alignment by a certain degree. Then the center of the pin is X = 0, Z = 0
In the program, and placement on the machine the width is in the Z axis.
The question is whether we can report the position in the current alignment when we care about the left/right movement of the pin, where Z nominal is 0 and shows us our deviation (left/right)

So position, current alignemt, only axis Z.
Or do I have to choose datum reference, and XYZ.

I will add that the results differ by 0.4mm



Cheers !
Parents
  • Position of a width will be reported in a single axis only.



    Yes, drawing shows 2 positions,separate for thickness and width.
    So with this we are correct, only one axis.

    My second part of question is form of reporting.
    in pc-dmis we can choose datum reference in advanced tab, or current alignment.

    Current alignment Z=0 (which we measure in)_
    Datum reference Z=30 (example, can't remember excaclty)

    This changes results quite badly.




Reply
  • Position of a width will be reported in a single axis only.



    Yes, drawing shows 2 positions,separate for thickness and width.
    So with this we are correct, only one axis.

    My second part of question is form of reporting.
    in pc-dmis we can choose datum reference in advanced tab, or current alignment.

    Current alignment Z=0 (which we measure in)_
    Datum reference Z=30 (example, can't remember excaclty)

    This changes results quite badly.




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