Whacky angles and misplaced planes

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  • Whacky angles and misplaced planes

    I have a problem that doesn't make any sense.
    I made a program for a part involving angles and different workplanes, and the workplanes are correct. Using the same part, I ran the program automatically after taking all of the hits. The program runs smoothly until it gets to an angled plane. It errors out when it goes to take the hits. The workplane is XPLUS and the tip moves in the XMINUS direction.

    Then when it gets to another plane in the XMINUS direction, the probe moves in the YMINUS direction. I took the hits and re-took the hits 3 or 4 times, even changing the workplanes to see if different ones fit. Nothing seems to work. Does anyone have any ideas?The version(I think) is PCDMIS CAD++3.5 Maintenance Release 2. I'm guessing by code you mean the commands for the hits(I'm somewhat new to this):
    A1 =ALIGNMENT/START,RECALL:STARTUP, LIST= YES
    ALIGNMENT/LEVEL,YMINUS,PLANE1
    ALIGNMENT/ROTATE,XPLUS,TO,LINE5,ABOUT,YMINUS
    ALIGNMENT/TRANS,XAXIS,CIRCLE1
    ALIGNMENT/TRANS,ZAXIS,CIRCLE1
    ALIGNMENT/TRANS,YAXIS,PLANE2
    ALIGNMENT/END
    MOVE/POINT,2.8272,-1.2894,6.1563
    MOVE/POINT,-6.9094,-2.5574,16.4869
    MOVE/POINT,-6.9092,-2.5576,16.4867
    TIP/T1A90B-75, SHANKIJK=-0.9403, -0.3404, -0.0034, ANGLE=89.4366
    MOVE/POINT,-2.7849,-3.5575,9.1333
    MOVE/POINT,-2.5705,-1.146,0.8978
    MOVE/POINT,-0.127,-0.3962,0.2881
    WORKPLANE/XPLUS
    PLANE7 =FEAT/PLANE,RECT
    THEO/1.2669,0.127,-0.0467,0.9389291,0.3441107,-0.0002
    ACTL/1.1637,0.0825,-0.0483,0.9389484,0.3440579,0.0003302
    MEAS/PLANE,4
    HIT/BASIC,1.1446,0.1197,0.325,0.9389291,0.3441107,-0.0002,1.1517,0.115,0.3234,USE THEO = YES
    MOVE/CIRCULAR
    HIT/BASIC,1.1695,0.0516,0.0754,0.9389291,0.3441107,-0.0002,1.1765,0.0473,0.0737,USE THEO = YES
    MOVE/CIRCULAR
    HIT/BASIC,1.1366,0.141,-0.2349,0.9389291,0.3441107,-0.0002,1.1437,0.1373,-0.2364,USE THEO = YES
    MOVE/CIRCULAR
    HIT/BASIC,1.1758,0.0341,-0.3522,0.9389291,0.3441107,-0.0002,1.1828,0.0306,-0.3539,USE THEO = YES
    ENDMEAS/

    I added the alignment I used just in case that was needed. The part has a hole in the middle, planes 1 and 2 are facing the same way, and the part is sitting up facing the YMINUS direction.
    Last edited by operator1; 07-23-2007, 12:02 PM. Reason: Adding more helpful information
    I feel a lot better now that I've lost my mind.


    Global Activ
    PCDMIS CAD ++3.5 MR2

  • #2
    Take a look at the feature vectors. Sounds like an issue there.
    Can you post version # and some of the code?
    When in doubt, post code. A second set of eyes might see something you missed.
    sigpic

    Comment


    • #3
      Originally posted by operator1 View Post
      I have a problem that doesn't make any sense.
      I made a program for a part involving angles and different workplanes, and the workplanes are correct. Using the same part, I ran the program automatically after taking all of the hits. The program runs smoothly until it gets to an angled plane. It errors out when it goes to take the hits. The workplane is XPLUS and the tip moves in the XMINUS direction.

      Then when it gets to another plane in the XMINUS direction, the probe moves in the YMINUS direction. I took the hits and re-took the hits 3 or 4 times, even changing the workplanes to see if different ones fit. Nothing seems to work. Does anyone have any ideas?
      Post some code. If you are checking a PLANE (or any other 3D Feature the Workplane is inconsequential).
      Bill Jarrells
      A lie can travel half way around the world while the truth is putting on its shoes. - Mark Twain

      Comment


      • #4
        I've had issues with measured planes taking hits opposite from where I showed it. Your best bet is to F9 the hits and choose the "RELEARN" checkbox. Then run it again and re-teach it. This should always fix it.
        I used to be high on life but I built up a tolerance.

        Brown & Sharpe Global Advantage
        PCDMIS CAD++ v2011mr2
        PH10MQ/SP600M


        sigpic

        Comment


        • #5
          Originally posted by operator1 View Post
          I have a problem that doesn't make any sense.
          I made a program for a part involving angles and different workplanes, and the workplanes are correct. Using the same part, I ran the program automatically after taking all of the hits. The program runs smoothly until it gets to an angled plane. It errors out when it goes to take the hits. The workplane is XPLUS and the tip moves in the XMINUS direction.

          Then when it gets to another plane in the XMINUS direction, the probe moves in the YMINUS direction. I took the hits and re-took the hits 3 or 4 times, even changing the workplanes to see if different ones fit. Nothing seems to work. Does anyone have any ideas?The version(I think) is PCDMIS CAD++3.5 Maintenance Release 2. I'm guessing by code you mean the commands for the hits(I'm somewhat new to this):
          A1 =ALIGNMENT/START,RECALL:STARTUP, LIST= YES
          ALIGNMENT/LEVEL,YMINUS,PLANE1
          ALIGNMENT/ROTATE,XPLUS,TO,LINE5,ABOUT,YMINUS
          ALIGNMENT/TRANS,XAXIS,CIRCLE1
          ALIGNMENT/TRANS,ZAXIS,CIRCLE1
          ALIGNMENT/TRANS,YAXIS,PLANE2
          ALIGNMENT/END
          MOVE/POINT,2.8272,-1.2894,6.1563
          MOVE/POINT,-6.9094,-2.5574,16.4869
          MOVE/POINT,-6.9092,-2.5576,16.4867
          TIP/T1A90B-75, SHANKIJK=-0.9403, -0.3404, -0.0034, ANGLE=89.4366
          MOVE/POINT,-2.7849,-3.5575,9.1333
          MOVE/POINT,-2.5705,-1.146,0.8978
          MOVE/POINT,-0.127,-0.3962,0.2881
          WORKPLANE/XPLUS
          PLANE7 =FEAT/PLANE,RECT
          THEO/1.2669,0.127,-0.0467,0.9389291,0.3441107,-0.0002
          ACTL/1.1637,0.0825,-0.0483,0.9389484,0.3440579,0.0003302
          MEAS/PLANE,4
          HIT/BASIC,1.1446,0.1197,0.325,0.9389291,0.3441107,-0.0002,1.1517,0.115,0.3234,USE THEO = YES
          MOVE/CIRCULAR
          HIT/BASIC,1.1695,0.0516,0.0754,0.9389291,0.3441107,-0.0002,1.1765,0.0473,0.0737,USE THEO = YES
          MOVE/CIRCULAR
          HIT/BASIC,1.1366,0.141,-0.2349,0.9389291,0.3441107,-0.0002,1.1437,0.1373,-0.2364,USE THEO = YES
          MOVE/CIRCULAR
          HIT/BASIC,1.1758,0.0341,-0.3522,0.9389291,0.3441107,-0.0002,1.1828,0.0306,-0.3539,USE THEO = YES
          ENDMEAS/

          I added the alignment I used just in case that was needed. The part has a hole in the middle, planes 1 and 2 are facing the same way, and the part is sitting up facing the YMINUS direction.
          When you taught this plane did PC DMIS guess it as a Circle? Just wondering because of the circular moves between the hits. Just a note, but I have had issues with Planes that were 'guessed' as circles and then over-ridden as planes. I am now in the habit of deleting the feature when that happens and try it again. You can always select PLANE before you measure and PC DMIS will not have to guess.
          Might not be your problem here but I have experienced it.
          Bill Jarrells
          A lie can travel half way around the world while the truth is putting on its shoes. - Mark Twain

          Comment


          • #6
            Re-teaching it as a plane did work--although it created another plane when I added the hits. Now my concern with that is consistency, but for now it works. I thank you dearly for that advice.

            Now my concern is on the plane set at an angle. How should I try to fix that? Can anyone help me with the angle?
            I feel a lot better now that I've lost my mind.


            Global Activ
            PCDMIS CAD ++3.5 MR2

            Comment


            • #7
              What's wrong with the angled plane?
              I used to be high on life but I built up a tolerance.

              Brown & Sharpe Global Advantage
              PCDMIS CAD++ v2011mr2
              PH10MQ/SP600M


              sigpic

              Comment


              • #8
                Everytime it goes to take a hit, it moves too far in. I know it's not the prehit distance because the prehit is set to .115 as opposed to the usual .05 or .04... I think it was guessed as a circle when I first created the plane, and I had to override guess, but would that cause the tip to error out going too far in?
                I feel a lot better now that I've lost my mind.


                Global Activ
                PCDMIS CAD ++3.5 MR2

                Comment


                • #9
                  It has to be your circular moves that are in between your hits. Highlight them and delete them. Run it again, I bet that'll fix it.
                  I used to be high on life but I built up a tolerance.

                  Brown & Sharpe Global Advantage
                  PCDMIS CAD++ v2011mr2
                  PH10MQ/SP600M


                  sigpic

                  Comment


                  • #10
                    Underspec, you are my new hero! My program works now. That did it. Thank you sooooo much!!!
                    I feel a lot better now that I've lost my mind.


                    Global Activ
                    PCDMIS CAD ++3.5 MR2

                    Comment


                    • #11
                      Wingman, I thank you also. If it weren't for you, I wouldn't have been able to fully complete the program.
                      I feel a lot better now that I've lost my mind.


                      Global Activ
                      PCDMIS CAD ++3.5 MR2

                      Comment


                      • #12
                        Many thanks to you as well, Wingman. Your advice helped me with my 2nd plane problem.
                        I feel a lot better now that I've lost my mind.


                        Global Activ
                        PCDMIS CAD ++3.5 MR2

                        Comment

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