GD&T question/symbol

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  • GD&T question/symbol

    Well, we keep talking about screwed up prints/GD&T from idiots. Well, I got a few today that in addition to just being flat out wrong on a bunch of stuff, it has some stupid symbol that I have not seen before. Anyone got any idea WTF this is? Specifically, the area outlined in YELLOW, (the datum toleranced to itself), the CIRCLE-U 0, never seen that one before and it is not in my ASME Y14.5M-1994 anywhere that I can find. 3 bonus points to the first (real) response.


    Last edited by Matthew D. Hoedeman; 05-25-2007, 02:03 PM.
    sigpic
    Originally posted by AndersI
    I've got one from September 2006 (bug ticket) which has finally been fixed in 2013.

  • #2
    I couldn't find anything in my books. Looks like a call to the engineer
    sigpic Life is not a journey to the grave with the intention of arriving safely, but rather a skid in broadside, totally worn, proclaiming WOW What a ride!

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    • #3
      unilateral tol. found in Y14.41 and may appear in a future version of Y 14.5.'
      Go to cmm talk and search for unilateral tol. you will find a good discussion about it there.




      http://www.cmmtalk.com/views.aspx?to...opic_title=New
      Last edited by trice; 04-26-2007, 10:30 AM.
      trice
      4.3 mr1

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      • #4
        What does the 0(zero) mean in that case?
        Links to my utilities for PCDMIS

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        • #5
          That's a new one on me. I would just ignore it and check the part the way it should be.
          I stopped complaining about prints a while ago and just check the part the way it should be. Never had a problem yet. I'll tell them up front what I'm doing, still haven't
          had a problem. I should add I don't deviate far from the print.
          Last edited by STANLEY; 04-26-2007, 10:20 AM.
          sigpic


          Was
          Pc-dmis 3.5 MR1 B & S 2009 MR1

          Now
          2010 MR3

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          • #6
            Originally posted by dmis_friend View Post
            unilateral tol. found in Y14.41 and may appear in a future version of Y 14.5.'
            Go to cmm talk and search for unilateral tol. you will find a good discussion about it there.
            Print states it is made blah, blah, blah to ASME Y14.5M-1994, so if the circle-u is NOT part of that, it should not be there.
            sigpic
            Originally posted by AndersI
            I've got one from September 2006 (bug ticket) which has finally been fixed in 2013.

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            • #7
              Feign illness, go home, start drinking.

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              • #8
                Originally posted by Goodluck View Post
                Feign illness, go home, start drinking.
                They already think I'm sick. don't get paid at home. Who stopped?

                Sorry Matt. can't help unless you want me to run over the engineer.
                When in doubt, post code. A second set of eyes might see something you missed.
                sigpic

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                • #9
                  QUOTE=John Kingston;57596]They already think I'm sick. don't get paid at home. Who stopped?

                  Sorry Matt. can't help unless you want me to run over the engineer.[/QUOTE]

                  Oh, COULD YOU? That would help a lot!

                  Never stops amazing me HOW much time we waste in THIS day and age, trying to figure out what supposedly educated people do to screw up our job. Supposed to be getting 'leaner' to compete in a global market and instead we waste 10 times as much time trying to figure out what some ignorant idiot puts on a print, then can't explain it to us.

                  Here's another one, just for you to look at. Figure out THIS datum scheme!


                  [
                  Last edited by Matthew D. Hoedeman; 05-25-2007, 02:03 PM.
                  sigpic
                  Originally posted by AndersI
                  I've got one from September 2006 (bug ticket) which has finally been fixed in 2013.

                  Comment


                  • #10
                    Originally posted by Matthew D. Hoedeman View Post
                    Originally posted by John Kingston View Post
                    They already think I'm sick. don't get paid at home. Who stopped?

                    Sorry Matt. can't help unless you want me to run over the engineer.
                    Oh, COULD YOU? That would help a lot!

                    Never stops amazing me HOW much time we waste in THIS day and age, trying to figure out what supposedly educated people do to screw up our job. Supposed to be getting 'leaner' to compete in a global market and instead we waste 10 times as much time trying to figure out what some ignorant idiot puts on a print, then can't explain it to us.

                    Here's another one, just for you to look at. Figure out THIS datum scheme!


                    [
                    We have Administrative Assistants Day, Take your Kid to work day, etc. Lets start "RUN OVER AN ENGINEER DAY!"

                    Looks like -A- should be -C- , -B- should be -A-, and -C- should be -B-.
                    Even that is iffy.
                    When in doubt, post code. A second set of eyes might see something you missed.
                    sigpic

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                    • #11
                      Unequal Bilateral Tolerance

                      http://www.tec-ease.com/tips/october-05.htm

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                      • #12
                        Originally posted by John Kingston View Post
                        We have Administrative Assistants Day, Take your Kid to work day, etc. Lets start "RUN OVER AN ENGINEER DAY!"

                        Looks like -A- should be -C- , -B- should be -A-, and -C- should be -B-.
                        Even that is iffy.
                        And the one in the middle is on the left and the one on the right is an all-night DJ and the guy in the rear got drafted.
                        sigpic
                        Originally posted by AndersI
                        I've got one from September 2006 (bug ticket) which has finally been fixed in 2013.

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                        • #13
                          Maybe this DCX GD&T standard will help some.

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                          • #14
                            Unequal Bilateral Tolerance

                            There's also this from a GM addendum. Although with a Zero next to the tolerance it's really just a unilateral tolerance and kind of pointless unless they just wanted to avoid drawing the ghost lines on the print. I hope they referenced one of these documents on the print otherwise it's not legit.
                            Attached Files

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                            • #15
                              Looks like Phil wins the cupie doll. Your tolerance is all negative. I hope it is punched from that side.
                              sigpicYou're just jealous the voices talk to me.

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