total runout queston

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  • total runout queston

    I know this is more a GD&T question more then a cmm question. Is it a ligit to call two plane surfaces that are to be parallel to eachother as a total runout dimension?? So one surface being the datum and other with surface with the total runout fcf. I can not find a example of this anywhere. I know it can control a surface to an axis that is perpendicular (like a hub to a shaft) but I can't seem to get it if there parallel. should it not be a paralleism callout. Thanks for any help on this late in the day on a friday
    sigpicSTANDING CORRECTED IS THE ONLY WAY I STAND

  • #2
    Definition of RUNOUT section 9.2 page 180 ASME 14.5-2009

    Runout is a tolerance used to control the funtional relationship of 1 or more features to a DATUM AXIS eatablished from a datum feature specified at RMB.

    9.3 RUNOUT TOLERANCE:

    The type of features controlled by RUNOUT tolerances include those surfaces constructed around a datum axis and those constructed ar right angles to a datum axis.

    I dont think it can apply to what you are refering to. Go with // or Profile ?

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    • #3
      At first I thought you are totally right but now ASME 14.5-2009 section 9.4.2 total runout for control of a surfaces has me second guessing.
      sigpicSTANDING CORRECTED IS THE ONLY WAY I STAND

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      • #4
        the axis (vector) direction of the plane would still be 0,0,1 so it could still rotate around that axis (vector)
        Last edited by ADAM WALLACE; 11-08-2013, 03:35 PM.
        sigpicSTANDING CORRECTED IS THE ONLY WAY I STAND

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        • #5
          FIG 9.3 ( realting to 9.4.2 ) is still relating to an axis ?

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          • #6
            Maybe this will be helpful?

            http://books.google.ca/books?id=XdAK...runout&f=false

            The above link says:
            "Where circular runout is applied to a planar surface at a right angle to a datum axis, it controls deviations of the circular elements of the plane for wobble, which includes orientation and form deviations of the circular elements"

            Edit: Upon re-reading, this is pretty much already known. I'll leave it just in case it helps someone else.
            Last edited by Erikir; 11-08-2013, 06:22 PM.
            2012 CAD++ MR1
            Brown & Sharpe ONE
            PH10T

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