The Rookie Needs Help!

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  • The Rookie Needs Help!

    I'm trying to write a program using auto features now. I thought I had enough to make the program, but I'm stuck.

    An alignment needs 6 degrees of freedom: level to, rotate to about.., and the X,Y, and Z origins. I figured a manual alignment would need the same thing (I'm a terribly good procrastinator and have not been able to look over those sites. Sorry, James).

    I have to check a hook clamp with a height of 4.37 from the base to the center of the hooks, a width of 2.27, and a thickness of 1.88. There are 2 hooks (that obviously clamp on to something) toward the back of the part, and there is a hole towards the frot of the part. This hole has 3 different dimensions:
    .75, .733, and .404. They want me to check the location of these holes (and the diameters, if I can). I know I can't get the bottom diameter without flipping the part to its back, and the hooks are in the way, so I won't get a good reading for the 2nd diameter, but that's not my question.

    I'm trying to do a manual alignment. I leveled to the cylinder of the first diameter, rotated Y-minus about X-minus (the part is sitting straight up and lined up along the y-axis) to the side of the part, set the X and Y-origins to that of the cylinder, and used the top of the part where the hole starts as my Z-origin. The screen won't stop blinking, as to tell me the alignment is not complete. What am I missing or doing wrong?
    I feel a lot better now that I've lost my mind.


    Global Activ
    PCDMIS CAD ++3.5 MR2

  • #2
    I don't quite understand the part, can you upload a sketch or a pic?

    A.Gore
    sigpicA.Gore

    Comment


    • #3
      Originally posted by operator1 View Post
      I'm trying to write a program using auto features now. I thought I had enough to make the program, but I'm stuck.

      An alignment needs 6 degrees of freedom: level to, rotate to about.., and the X,Y, and Z origins. I figured a manual alignment would need the same thing (I'm a terribly good procrastinator and have not been able to look over those sites. Sorry, James).

      I have to check a hook clamp with a height of 4.37 from the base to the center of the hooks, a width of 2.27, and a thickness of 1.88. There are 2 hooks (that obviously clamp on to something) toward the back of the part, and there is a hole towards the frot of the part. This hole has 3 different dimensions:
      .75, .733, and .404. They want me to check the location of these holes (and the diameters, if I can). I know I can't get the bottom diameter without flipping the part to its back, and the hooks are in the way, so I won't get a good reading for the 2nd diameter, but that's not my question.

      I'm trying to do a manual alignment. I leveled to the cylinder of the first diameter, rotated Y-minus about X-minus (the part is sitting straight up and lined up along the y-axis) to the side of the part, set the X and Y-origins to that of the cylinder, and used the top of the part where the hole starts as my Z-origin. The screen won't stop blinking, as to tell me the alignment is not complete. What am I missing or doing wrong?
      If your using a cylinder for manual alignment you may be trying to do too much with the manual. Try to simplify your manual features. The manual alignment is only to guide the CMM to the part close enough to measure DCC features and do a DCC alignment.
      Perry
      B&S Mistral
      3.207 Beta on XP

      Older'n dirt

      Comment


      • #4
        Perry makes a good point. I don't always use the same features in my manual alignment as in my DCC alignment. Use easy stuff to get close.
        When in doubt, post code. A second set of eyes might see something you missed.
        sigpic

        Comment


        • #5
          Also in describing your alignment, you do not tell us what plane you leveled to the cylinder. Your rotation my be overriding a degree of freedom you have already isolated by leveling.
          sigpic"Hated by Many, Loved by Few" _ A.B. - Stone brewery

          Comment


          • #6
            On certain parts, it is easier and more time efficient to use other features to do the initial alignment. Once you get it close, then DCC the correct datum features to lock it in.

            A.Gore
            sigpicA.Gore

            Comment


            • #7
              If I'm reading correctly your part is basically a block with a hole through it. You have the block sitting on the table with the hole pointing up. You measured the hole as a cylinder. You measured a line running y-plus on one side of the part. You measured a point on the top of the part.

              You leveled z-plus to the cylinder
              You rotated the line to y-plus
              You set x and y to the cylinder
              You set z to the point.

              That looks good if I understood. If that is what you did, I suspect the 'flashing' has nothing to do with your alignment.

              Comment


              • #8
                Originally posted by Goodluck View Post
                If I'm reading correctly your part is basically a block with a hole through it. You have the block sitting on the table with the hole pointing up. You measured the hole as a cylinder. You measured a line running y-plus on one side of the part. You measured a point on the top of the part.

                1. You leveled z-plus to the cylinder
                2. You rotated the line to y-plus
                3. You set x and y to the cylinder
                4. You set z to the point.

                That looks good if I understood. If that is what you did, I suspect the 'flashing' has nothing to do with your alignment.
                I took hits at the top of the area where the hole is(I can't call it a plane, because it is a radius. A huge radius, but the CMM measured it as a plane). I guess I could have measured a point on top of the part, tho.

                1. Yes
                2. Y-minus, but yes. Actually, I tried Y-Plus AND Y-minus
                3. Yes
                4. Z to the plane created from the top area

                Usually after I place in all of the necessary components of the alignment, the screen stops blinking and the origin marker sticks to one place, showing me where the alignment placed my origin. It never stops moving and the origin marker rotates about X and Y as to say I pinned my Z-axis, but not my X and/or Y-axes.
                I feel a lot better now that I've lost my mind.


                Global Activ
                PCDMIS CAD ++3.5 MR2

                Comment


                • #9
                  Originally posted by operator1 View Post
                  I took hits at the top of the area where the hole is(I can't call it a plane, because it is a radius. A huge radius, but the CMM measured it as a plane). I guess I could have measured a point on top of the part, tho.

                  1. Yes
                  2. Y-minus, but yes. Actually, I tried Y-Plus AND Y-minus
                  3. Yes
                  4. Z to the plane created from the top area

                  Usually after I place in all of the necessary components of the alignment, the screen stops blinking and the origin marker sticks to one place, showing me where the alignment placed my origin. It never stops moving and the origin marker rotates about X and Y as to say I pinned my Z-axis, but not my X and/or Y-axes.
                  Can you post the code for your alignment?

                  Comment


                  • #10
                    I had some superb help fom someone very well educated--thank you Perry--so I have my alignment down the way it should be:
                    I feel a lot better now that I've lost my mind.


                    Global Activ
                    PCDMIS CAD ++3.5 MR2

                    Comment


                    • #11
                      Code:
                      startup    =alignment/start,recall:, List= Yes
                                  Alignment/end
                                  Loadprobe/rick1tester
                                  Tip/t1a0b0, Shankijk=0, 0, 1, Angle=0
                                  Workplane/zplus
                                  Prehit/ 0.075
                                  Retract/ 0.055
                                  Check/ 0.4724,1
                                  Movespeed/ 20
                                  Scanspeed/ 2
                                  Fly/on,0.1181
                                  Workplane/zplus
                                  Mode/manual
                      Manualpln  =feat/plane,rect
                                  Theo/4.2522,16.5891,-29.3224,-0.0002502,-0.0004395,0.9999999
                                  Actl/4.2522,16.5891,-29.3224,-0.0002502,-0.0004395,0.9999999
                                  Meas/plane,3
                                  Hit/basic,4.9813,16.7221,-29.3222,-0.0002502,-0.0004395,0.9999999,4.9813,16.7221,-29.3222,use Theo = Yes
                                  Hit/basic,4.3869,16.2542,-29.3226,-0.0002502,-0.0004395,0.9999999,4.3869,16.2542,-29.3226,use Theo = Yes
                                  Hit/basic,3.3885,16.7911,-29.3226,-0.0002502,-0.0004395,0.9999999,3.3885,16.7911,-29.3226,use Theo = Yes
                                  Endmeas/
                      Y-axis Line=feat/line,rect,unbnd
                                  Theo/4.6619,21.6467,-29.0125,-0.0134382,0.9999097,0
                                  Actl/4.6619,21.6467,-29.0125,-0.0134382,0.9999097,0
                                  Meas/line,2,workplane
                                  Hit/basic,4.6619,21.6467,-29.0125,-0.9999097,-0.0134382,0,4.6619,21.6467,-29.0125,use Theo = Yes
                                  Hit/basic,4.635,23.6473,-29.0125,-0.9999097,-0.0134382,0,4.635,23.6473,-29.0125,use Theo = Yes
                                  Endmeas/
                      Y-origin Pt=feat/point,rect
                                  Theo/1.793,18.7824,-27.3073,0,0,1
                                  Actl/1.793,18.7824,-27.3073,0,0,1
                                  Meas/point,1
                                  Hit/basic,1.793,18.7824,-27.3073,0,0,1,1.793,18.7824,-27.3073,use Theo = Yes
                                  Endmeas/
                      Manual1    =alignment/start,recall:startup, List= Yes
                                  Alignment/level,zplus,manualpln
                                  Alignment/rotate,yplus,to,y-axis Line,about,zplus
                                  Alignment/trans,xaxis,y-axis Line
                                  Alignment/trans,yaxis,y-origin Pt
                                  Alignment/trans,zaxis,manualpln
                                  Alignment/end
                                  Mode/dcc
                      Dccy-rotate=feat/line,rect,unbnd
                                  Theo/-0.0043,0.1398,3.7402,-0.000095,1,0
                                  Actl/-0.0043,0.1398,3.7402,-0.000095,1,0
                                  Meas/line,2,workplane
                                  Hit/basic,-0.0043,0.1398,3.7402,1,0.000095,0,-0.0043,0.1398,3.7402,use Theo = Yes
                                  Hit/basic,-0.0045,1.6764,3.7397,1,0.000095,0,-0.0045,1.6764,3.7397,use Theo = Yes
                                  Endmeas/
                      Dccx-origin=feat/point,rect
                                  Theo/-0.0042,0.329,3.6453,1,0,0
                                  Actl/-0.0042,0.329,3.6453,1,0,0
                                  Meas/point,1
                                  Hit/basic,-0.0042,0.329,3.6453,1,0,0,-0.0042,0.329,3.6453,use Theo = Yes
                                  Endmeas/
                                  Move/point,0.1996,-1.0614,3.646
                                  Move/point,-0.4639,-1.0522,3.4722
                      Dccy-origin=feat/point,rect
                                  Theo/-0.4541,-0.2443,3.472,0,-1,0
                                  Actl/-0.4541,-0.2443,3.472,0,-1,0
                                  Meas/point,1
                                  Hit/basic,-0.4541,-0.2443,3.472,0,-1,0,-0.4541,-0.2443,3.472,use Theo = Yes
                                  Endmeas/
                                  Move/point,-0.0187,-1.1704,0.8486
                      Dccz-originlevelpln=feat/plane,rect
                                  Theo/-0.4499,0.2227,-0.0003,0.0000009,0.000365,0.9999999
                                  Actl/-0.4499,0.2227,-0.0003,0.0000009,0.000365,0.9999999
                                  Meas/plane,3
                                  Hit/basic,0.2678,-0.9283,0.0001,0.0000009,0.000365,0.9999999,0.2678,-0.9283,0.0001,use Theo = Yes
                                  Hit/basic,-0.6973,-0.9153,0.0001,0.0000009,0.000365,0.9999999,-0.6973,-0.9153,0.0001,use Theo = Yes
                                  Move/point,-0.6967,-0.9369,6.0483
                                  Move/point,-0.6448,2.9222,6.0467
                                  Hit/basic,-0.9201,2.5115,-0.0012,0.0000009,0.000365,0.9999999,-0.9201,2.5115,-0.0012,use Theo = Yes
                                  Endmeas/
                      Dcc        =alignment/start,recall:manual1, List= Yes
                                  Alignment/level,zplus,dccz-originlevelpln
                                  Alignment/rotate,yplus,to,dccy-rotate,about,zplus
                                  Alignment/trans,xaxis,dccx-origin
                                  Alignment/trans,yaxis,dccy-origin
                                  Alignment/trans,zaxis,dccz-originlevelpln
                                  Alignment/end
                      I feel a lot better now that I've lost my mind.


                      Global Activ
                      PCDMIS CAD ++3.5 MR2

                      Comment


                      • #12
                        So now I have to create the features I need to check, and I'm hoping to do 80-90% of them using the AUTO features option(although someone who uses PCDMIS for a machine{who knew just about as much as I knew before I had the help} told me there were some features I had to take manual hits for) to create the program.

                        Now my next issue is with using auto features......given my alignments are correct(which they should be, because I had someone walk me through it (baby step after baby step....)
                        I feel a lot better now that I've lost my mind.


                        Global Activ
                        PCDMIS CAD ++3.5 MR2

                        Comment


                        • #13
                          Originally posted by Goodluck View Post
                          Can you post the pictures of you & your room mate?
                          Please do. I'd like to see them too...
                          sigpic
                          Xcel 15-20-10 - PFXcel 7-6-5 - Merlin 11-11-7 - Romer Absolute 7525SI
                          PCDMIS 2012
                          Windows Office XP

                          Comment


                          • #14
                            Originally posted by rangerboat72 View Post
                            Please do. I'd like to see them too...
                            Why do you want to see us so bad? We're ugly, nerdy, and have no fashion taste. You don't wanna see that.....
                            I feel a lot better now that I've lost my mind.


                            Global Activ
                            PCDMIS CAD ++3.5 MR2

                            Comment


                            • #15
                              What do you want to measure using autofeatures? Lets start there. Be careful not to get any jello on the bearing surfaces on the granite.
                              When in doubt, post code. A second set of eyes might see something you missed.
                              sigpic

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