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PAULKORENKIEWIC1-Visitor
1-Visitor
July 7, 2009
Question

accuracy and merges...

  • July 7, 2009
  • 12 replies
  • 1897 views
Guru's,

Occasionally when merging two parts Pro/E will give me an error telling
me to change one of the parts to some new accuracy value OR to use
absolute accuracy. I've somewhat blindly always just followed orders
and changed whatever it told me to. I am wondering if I would be better
off going to the absolute method instead? Would I simply change the two
parts to the same absolute accuracy value? And would it matter what
that value is? Any thoughts? Please respond to the list to maintain
the thread...
thanks in advance...

Paul Korenkiewicz
FEV , Inc.
4554 Glenmeade
Auburn Hills, MI, 48326-1766

    12 replies

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    T
    tyler.smith1-Visitor
    1-Visitor
    July 9, 2009
    How is everyone else using accuracy with family table instances?

    When trying to use absolute accuracy, we get a lot of "accuracy
    failures" in our models (one accuracy value does not work for all our
    instances). As far as I know, pro/e doesn't allow you to add accuracy
    to a family table, so we are using a workaround: use relative accuracy
    on our model, then draw a long curve in our model which makes the model
    size bigger, which causes pro/e to refigure its accuracy for that
    instance.

    Does anyone have a more elegant solution? Our parts frequently have
    edges that are on the order of .001" long and the length of our bounding
    box diagonal is maybe around 20".

    Thanks,
    Tyler
    P
    ptc-19327451-Visitor
    1-Visitor
    July 9, 2009
    It's always the exception that tests the rule...



    For your precise reason, we only use absolute accuracy for our models.
    If the smallest edge ever is approx .001" (inches or units(?)--- better
    left to another discussion), we would set our absolute accuracy to .0001



    You can go finer (tighter) with the absolute accuracy by setting the
    absolute accuracy lower bound config.pro setting.



    On other words, it seems to me that by changing a length of a reference
    curve in your family table, you are causing Pro-E to change the
    'relative' accuracy to match the smallest edge feature. (20/.001 = .002)
    'absolutely'



    Again, I would have set the global absolute accuracy to something like
    .0001", or .00001", and went from there.



    I would be very interested to see if your parts have any 'Geometry
    Checks' before or after the accuracy modifications.





    Christopher Gosnell

    TRIGON INC.
    FPD Company
    124 Hidden Valley Road
    McMurray, PA 15317
    PH: 724.941.5540
    FX: 724.941.8322
    www.fpdinc.com
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