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Positional measurements that I don't understand.

Vladimir
Hi Colleagues, I am currently working on one part which is a circle with three ears. It has positional measurements, which I had difficulty with. They are marked in red in the attached photos.
As far as I understand, if the reference point is the central circle, then the controlled elements should be controlled only along the PR, but I can not understand how to represent this in Pcdmis.
I hope you can give me some tips for this.
PS
I use 2014 version PCdmis, and xact.
PPS
Datum D what is this??! Dia 100? But it's dat A in my opinion...Alien


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  • That part should have a simple alignment structure.

    "A" as the face in your drawing.
    "C" as the center bore.
    "D" the width of that tab/tooth.

    Level to the surface.
    Rotate center circle through the width.
    Set origin on face.
    Set remaining origins at center circle.

    I know that's not what you drew, just pointing out how simple this should be. Finding the answer with simplicity is very difficult for many people.
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  • That part should have a simple alignment structure.

    "A" as the face in your drawing.
    "C" as the center bore.
    "D" the width of that tab/tooth.

    Level to the surface.
    Rotate center circle through the width.
    Set origin on face.
    Set remaining origins at center circle.

    I know that's not what you drew, just pointing out how simple this should be. Finding the answer with simplicity is very difficult for many people.
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