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    I have a flat part that is a curvy shape. The callout on the perimeter is Profile of a surface to 0.1MM to A and B. I undertand the GD&T part of it, I just am confused as to the best way to dimension it. I have a 2D CAD file of the part. In the past I have done it a couple of different ways, and a fellow programmer has done it a different way as well.

    My question is this, what's the best way to measure and dimension this callout? I am using PCDMIS CAD so I cannot scan the outside of the part. (That is what I wanted to do, but I cannot)


    Thanks in advance.

  • #2
    Originally posted by John Kugler View Post
    I have a flat part that is a curvy shape. The callout on the perimeter is Profile of a surface to 0.1MM to A and B. I undertand the GD&T part of it, I just am confused as to the best way to dimension it. I have a 2D CAD file of the part. In the past I have done it a couple of different ways, and a fellow programmer has done it a different way as well.

    My question is this, what's the best way to measure and dimension this callout? I am using PCDMIS CAD so I cannot scan the outside of the part. (That is what I wanted to do, but I cannot)


    Thanks in advance.
    Can you take trim edge points all around and construct a feature set. Recall profile (form and location)?
    My 2 cents.
    sigpicIt's corona time!
    737 Xcel Cad++ v2009MR1....SE HABLA ESPAƑOL

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    • #3
      Like Roberto stated.
      Edge points or if the surface is stable enought, vector points.
      Then create a set from these points and dimension the set as a surface profile, form and location (+/- 1/2 of your profile requirement).
      Last edited by John Riggins; 03-17-2007, 04:53 PM.
      Lately, it occurs to me
      What a long, strange trip it's been.

      2017 R1 (Offline programming)

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      • #4
        Being a 2D CAD model, I cannot do vector points. But, the other operator does take DCC hits on the CAD, then probes the part and then creates a feature set and then dimensions the profile.

        I've measured the indivdual features (Lines, circles, etc) then profiled those. Will this work?


        Thanks

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        • #5
          It will not be an accurate representation of the parts as they will have no relationship to each other. I think you should be able to construct a feature set from any features and it will give you a good result, provided your nominals are correct

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