Alignment question

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  • Alignment question

    I have a part print that has got me scratching my head. I made a drawing of the area in question “see attachment”.
    What I have is DATUM –A- created from A1, A2 & A3. DATUM –B- & -C- are circles measured on 13.3° angle off from my DATUM –A-. My offset of 0.1 is only true when I’m level to –A-. How would you align to this?
    Last edited by Tested; 02-27-2007, 07:44 AM.

  • #2
    Tested,

    After measuring "B" and "C", construct cast points out of them.
    Next, iterative alignment; level 3 points A1, A2, A3, then rotate between B & C.
    Last origin B, done.

    Regards,
    ZydecoPete
    sigpic

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    • #3
      ...

      Originally posted by Peter Warcholyk View Post
      Tested,

      After measuring "B" and "C", construct cast points out of them.
      Next, iterative alignment; level 3 points A1, A2, A3, then rotate between B & C.
      Last origin B, done.

      Regards,
      ZydecoPete
      No CAD.

      Comment


      • #4
        Originally posted by Tested View Post
        No CAD.
        Ya don't need cad to do an iterative alignment, all you need are the exact XYZIJK values for all the points you are going to use for the alignment. You just type them in.
        sigpic
        Originally posted by AndersI
        I've got one from September 2006 (bug ticket) which has finally been fixed in 2013.

        Comment


        • #5
          >>>

          Originally posted by Matthew D. Hoedeman View Post
          Ya don't need cad to do an iterative alignment, all you need are the exact XYZIJK values for all the points you are going to use for the alignment. You just type them in.
          You are asking me to check the two circles as ovals , this in it's self as they are not at -A- datum heigth and not round as checked stops the alignment you are doing.

          Comment


          • #6
            Don't measure them as ovals.
            Last edited by rangerboat72; 01-26-2007, 12:02 PM. Reason: Didn't look at the side view...
            sigpic
            Xcel 15-20-10 - PFXcel 7-6-5 - Merlin 11-11-7 - Romer Absolute 7525SI
            PCDMIS 2012
            Windows Office XP

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            • #7
              If you can 'see' the feature as a circle from an axis, then measure it as a circle, if you need different heights for each hit, do it as a learned feature, as long as the nominals (XYZ) are correct as well as the 'circle' vector (0,0,1) it SHOULD work as an iterative alignment. A learned circle can have each hit at a different Z height, thus allowing you to set the height of each just below the 'top' of the part.
              sigpic
              Originally posted by AndersI
              I've got one from September 2006 (bug ticket) which has finally been fixed in 2013.

              Comment


              • #8
                I guess I'm not explaning this very at all well.
                I'll try again when I have some more time.
                I thank you all for your input. I'll see if I can define what I have better so as you are able to get a hold of what is really going on .

                Thanks again.

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                • #9
                  Measure your datum targets A1 thru A3 construct base plane

                  Measure a plane on top of datum B
                  Measure cylinder on OD of B
                  Intersect point plane and OD

                  Measure a plane on top of datum c
                  Measure cylinder on OD of c
                  Intersect point plane and OD

                  Construct your alignment from the points
                  Xcel & MicroVal Pfx & Global 37mr4 thru 2012mr1sp3
                  Contura Calypso 5.4

                  Lord, keep Your arm around my shoulder and Your hand over my mouth. Amen.

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                  • #10
                    111

                    Originally posted by dwade View Post
                    Measure your datum targets A1 thru A3 construct base plane

                    Measure a plane on top of datum B
                    Measure cylinder on OD of B
                    Intersect point plane and OD

                    Measure a plane on top of datum c
                    Measure cylinder on OD of c
                    Intersect point plane and OD

                    Construct your alignment from the points
                    You seem to understand much better what I am trying to do, but I do have some other things going on I forgot to put into the picture.
                    First A1, A2 & a3 are all at different heights .
                    Next -B- are three small prongs and there tops are not at the same angle as the circle that crates the -B-, they also from a cone.
                    Third is the -C- is also a cone. Both of these "-A-, & -B-" are at a given height up from A1.
                    forth is that the offset between -B-, & -C- is only true when leveled to -A-.

                    I think I have added all the missing parts now.
                    Could you look at it again with these things figured in.

                    Thanks

                    Comment


                    • #11
                      1) Probe individual points for datum targets A1, A2, & A3.

                      2) Create offset plane - since A1 is set, input offset value for A2, and A3 - LEVEL to plane and trans Z origin.

                      The rest as Tested mentioned...

                      Would be nice to see the actual print or is this a fixture drawing? illustration not clear.
                      PC-DMIS CAD++ 3.7 from 4.2 MR1

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                      • #12
                        [QUOTE=JoeRZ;46561]
                        The rest as Tested mentioned...

                        Sorry - I mean dwade's suggestion...
                        PC-DMIS CAD++ 3.7 from 4.2 MR1

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