Runout and Total Runout

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  • Runout and Total Runout

    No idea if anyone can answer this or not.
    I am having a problem with runout and total runout.
    When I measure features off a combined datum, for example, Datum "AB" I am continuously getting ridiculously high readings. I mean, we are talking WAY off. Like giving me a reading of .030 runout on a part that I know is no worse than maybe .0002.
    I know I am programming something wrong but it's just not registering with me what it is.
    Any help appreciated.
    Thanks.
    PC-DMIS 2009
    Brown & Sharpe Global Image 9128

    PC-DMIS 3.7 MR3
    Brown & Sharpe Global Image 575

  • #2
    Originally posted by FCGomes View Post
    No idea if anyone can answer this or not.
    I am having a problem with runout and total runout.
    When I measure features off a combined datum, for example, Datum "AB" I am continuously getting ridiculously high readings. I mean, we are talking WAY off. Like giving me a reading of .030 runout on a part that I know is no worse than maybe .0002.
    I know I am programming something wrong but it's just not registering with me what it is.
    Any help appreciated.
    Thanks.
    Are you leveling to the co-primary datum?

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    • #3
      How are you constructing the A-B datum?
      sigpic GDTPS - 0584

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      • #4
        Originally posted by JM222 View Post
        Are you leveling to the co-primary datum?
        No, I am leveling on the "A" Datum.
        PC-DMIS 2009
        Brown & Sharpe Global Image 9128

        PC-DMIS 3.7 MR3
        Brown & Sharpe Global Image 575

        Comment


        • #5
          Originally posted by inspector212 View Post
          How are you constructing the A-B datum?
          I create the "A" Datum then the "B" Datum (Both circles along the same plane) and create a line running through the centers of "A" & "B". This line becomes the "AB" Datum.
          PC-DMIS 2009
          Brown & Sharpe Global Image 9128

          PC-DMIS 3.7 MR3
          Brown & Sharpe Global Image 575

          Comment


          • #6
            Originally posted by FCGomes View Post
            I create the "A" Datum then the "B" Datum (Both circles along the same plane) and create a line running through the centers of "A" & "B". This line becomes the "AB" Datum.
            ...it has to be a 3-d line....

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            • #7
              take a plane in top of part ,alignment and level to Z+ then take a concentricity of the two circles just to see if they are with the .0002" yuo find before , your datum -A-is inner circle can you post a partial print or the code
              sigpic
              Always Looking at the Big Picture :D:D:D
              3.7 MR1 CAD++
              4.3 Mr1 CAD++
              B&S (Global 07-10-07) -PH10T/TP20
              B&S (Microxcelpfx) -PH10MQ/TP20

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              • #8
                Originally posted by JM222 View Post
                ...it has to be a 3-d line....

                Yep, that was it!
                This was officially my "duh" moment.
                I knew that. Therefore, I made it a 2D line...DUH!
                Thank you for the reminder! You rock!
                PC-DMIS 2009
                Brown & Sharpe Global Image 9128

                PC-DMIS 3.7 MR3
                Brown & Sharpe Global Image 575

                Comment


                • #9
                  Originally posted by FCGomes View Post
                  Yep, that was it!
                  This was officially my "duh" moment.
                  I knew that. Therefore, I made it a 2D line...DUH!
                  Thank you for the reminder! You rock!
                  Don't forget the customary slapping of the forehead - boy if I had a nickel for everytime I had a brainfart moment programming I'd be able to buy my own CMM
                  sigpic
                  Originally posted by Ironhoe
                  I got something under my sporran for you, take care of it and you got my vote.

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                  • #10
                    Originally posted by Lab_ratt View Post
                    Don't forget the customary slapping of the forehead - boy if I had a nickel for everytime I had a brainfart moment programming I'd be able to buy my own CMM
                    +1...glad I could help Gomes

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