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Cad=part

giantslayer
I am beginning to attempt to program off a cad model. I have a sample part, every time I press cad=part my alignment moves off my cad model. I am actually trying to program off of cad on a part I have a sample for before I make a program off a part that I have no sample for.
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  • Are you looking for help creating an alignment that will represent in-car co-ordinates? If you are then you should probably forget about using a readpoint to start your alignment and stick to using iterative alignments using the part's datum features. I've read a few threads and I haven't found one person that said they use readpoints successfully with in-car co-ordinates. I hate doing the manual alignments so if you find a way to implement the readpoint-start then please share. Otherwise you should just be doing 2 iterative alignments - 1 manual and 1 automatic.

    If you know how to create an iterative alignment using in-car co-ords then you can ignore the rest of this post.

    Basically you have to figure out your workplane, then use the auto-features to pick your 4way, 2 way, and net points off the cad (click beside the hole on the cad and the co-ords and vectors should autogenerate which makes this really easy. Use the provided co-ords on the GD&T for your nets). Align the part to them and take your manual hits. Then copy-paste the alignment with slight name changes right below it, create your movepoints to avoid crashes, then run it in DCC mode.

    If you're using a fixture with tooling balls or holes (as opposed to a free state setup) then it's a little different but not much more difficult. Set your workplane, create 3 spheres with the co-ords labelled on the fixture for each tooling ball. They'll form a triangle on the fixture. The sphere that's in the middle is your master, the short side is your plane and the long side is the line. Create an iterative alignment with the three tooling balls. Align the part to them and take your manual hits. Then copy-paste the alignment with slight name changes right below it, create your movepoints to avoid crashes, then run it in DCC mode.

    I attached an alignment using datum features below.

    If you didn't need any of this info then sorry for the text-dump. I'm relatively new to programming pc-dmis too so I don't have 1/10 the knowledge that most of these guys do (but I can create programs from scratch and they work great so I've got that going for me which is nice). 

                WORKPLANE/XPLUS
            TIP/T1A0B0, SHANKIJK=0, 0, 1, ANGLE=0
            MOVESPEED/ 300
            TOUCHSPEED/ 2
            PREHIT/ 4
            RETRACT/ 4
            COMMENT/OPER,NO,PLACE PART ON TABLE WITH 4-WAY AT FRONT OF CMM
                           ,TAKE HITS ON MANUAL ALIGNMENT PTS.
A1_M       =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/1459.6,-750.295,31.6,0,1,0
            ACTL/428.503,-50.721,-422.588,0,1,0
            TARG/1459.6,-750.295,31.6,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
D1_M       =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/1459.6,-750.295,0.63,0,1,0
            ACTL/454.187,-34.793,-422.577,0,1,0
            TARG/1459.6,-750.295,0.63,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
A2_M       =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/431.56,-750.295,33.76,0,1,0
            ACTL/-89.648,836.199,-422.676,0,1,0
            TARG/431.56,-750.295,33.76,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
A3_M       =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/430.4,-750.295,-5.44,0,1,0
            ACTL/-57.515,857.247,-422.681,0,1,0
            TARG/430.4,-750.295,-5.44,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
2_WAY_M    =AUTO/CIRCLE,SHOWALLPARAMS = YES,SHOWHITS = NO
            THEO/500.503,-747.295,-3.988,0,1,0,13.121
            ACTL/500.503,-747.295,-3.988,0,1,0,13.295
            TARG/500.503,-747.295,-3.988,0,1,0
            THEO_THICKNESS = 0,RECT,IN,CIRCULAR,LEAST_SQR,ONERROR = NO,$
            AUTO MOVE = NO,DISTANCE = 5,RMEAS = None,None,None,$
            READ POS = NO,FIND HOLE = NO,REMEASURE = NO,$
            NUMHITS = 4,INIT = 3,PERM = 3,SPACER = 1,PITCH = 0,$
            START ANG = 0,END ANG = 0,DEPTH = 0.3,$
            ANGLE VEC = -1,0,0
4_WAY_M    =AUTO/CIRCLE,SHOWALLPARAMS = YES,SHOWHITS = NO
            THEO/1263.5,-747.295,1.507,0,1,0,14.1
            ACTL/355.089,135.405,-420.145,0.0112641,0.0031174,0.9999317,15.322
            TARG/1263.5,-747.295,1.507,0,1,0
            THEO_THICKNESS = 0,RECT,IN,CIRCULAR,LEAST_SQR,ONERROR = NO,$
            AUTO MOVE = NO,DISTANCE = 5,RMEAS = None,None,None,$
            READ POS = NO,FIND HOLE = NO,REMEASURE = NO,$
            NUMHITS = 4,INIT = 3,PERM = 3,SPACER = 1,PITCH = 0,$
            START ANG = 0,END ANG = 0,DEPTH = 0.3,$
            ANGLE VEC = -1,0,0
A0         =ALIGNMENT/START,RECALL:STARTUP, LIST= YES
            ALIGNMENT/ITERATE
              PNT TARGET RAD = 4, START LABEL = , FIXTURE TOL = 0.12, ERROR LABEL = 
              MEAS ALL FEAT = NO ,MAX ITERATIONS = 99 ,LEVEL AXIS=YAXIS ,ROTATE AXIS=ZAXIS ,ORIGIN AXIS=XAXIS
            LEVEL = A1_M,D1_M,A2_M,A3_M,,
            ROTATE = 4_WAY_M,2_WAY_M,,
            ORIGIN = 4_WAY_M,,
            ALIGNMENT/END
            COMMENT/OPER,NO,PREPARE FOR DCC MOVES
            MODE/DCC
            MOVE/POINT,NORMAL,1067.307,-603.49,-12.302
2_WAY_ALIGN =AUTO/CIRCLE,SHOWALLPARAMS = YES,SHOWHITS = NO
            THEO/500.503,-747.295,-3.988,0,1,0,13.121
            ACTL/500.545,-747.166,-3.989,-0.0045131,0.9999816,-0.0040449,13.442
            TARG/500.503,-747.295,-3.988,0,1,0
            THEO_THICKNESS = 0,RECT,IN,CIRCULAR,LEAST_SQR,ONERROR = NO,$
            AUTO MOVE = AFTER,DISTANCE = 15,RMEAS = None,None,None,$
            READ POS = NO,FIND HOLE = NO,REMEASURE = NO,$
            NUMHITS = 6,INIT = 3,PERM = 3,SPACER = 2.5,PITCH = 0,$
            START ANG = 0,END ANG = 0,DEPTH = 0.3,$
            ANGLE VEC = -1,0,0
4_WAY_ALIGN =AUTO/CIRCLE,SHOWALLPARAMS = YES,SHOWHITS = NO
            THEO/1263.5,-747.295,1.507,0,1,0,14.1
            ACTL/1263.542,-746.838,1.677,-0.0058916,0.9998773,-0.0145167,14.351
            TARG/1263.5,-747.295,1.507,0,1,0
            THEO_THICKNESS = 0,RECT,IN,CIRCULAR,LEAST_SQR,ONERROR = NO,$
            AUTO MOVE = AFTER,DISTANCE = 5,RMEAS = None,None,None,$
            READ POS = NO,FIND HOLE = NO,REMEASURE = NO,$
            NUMHITS = 6,INIT = 3,PERM = 3,SPACER = 2.5,PITCH = 0,$
            START ANG = 0,END ANG = 0,DEPTH = 0.5,$
            ANGLE VEC = -1,0,0
A1         =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/1459.6,-750.295,31.6,0,1,0
            ACTL/1459.594,-750.298,31.608,0.0000018,1,0.0001233
            TARG/1459.6,-750.295,31.6,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
            MOVE/POINT,NORMAL,1446.821,-656.891,16.713
D1         =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/1459.6,-750.295,0.63,0,1,0
            ACTL/1459.593,-750.291,0.637,0.0000018,1,0.0001233
            TARG/1459.6,-750.295,0.63,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
            MOVE/POINT,NORMAL,1446.821,-656.891,16.713
            MOVE/POINT,NORMAL,947.619,-626.136,13.508
A2         =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/431.56,-750.295,33.76,0,1,0
            ACTL/431.566,-750.293,33.765,0.0000018,1,0.0001233
            TARG/431.56,-750.295,33.76,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
A3         =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/430.4,-750.295,-5.44,0,1,0
            ACTL/430.402,-750.291,-5.426,0.0000018,1,0.0001233
            TARG/430.4,-750.295,-5.44,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
A4         =ALIGNMENT/START,RECALL:A0, LIST= YES
            ALIGNMENT/ITERATE
              PNT TARGET RAD = 4, START LABEL = , FIXTURE TOL = 0.12, ERROR LABEL = 
              MEAS ALL FEAT = NO ,MAX ITERATIONS = 99 ,LEVEL AXIS=YAXIS ,ROTATE AXIS=ZAXIS ,ORIGIN AXIS=XAXIS
            LEVEL = A1,D1,A2,A3,,
            ROTATE = 4_WAY_ALIGN,2_WAY_ALIGN,,
            ORIGIN = 4_WAY_ALIGN,,
            ALIGNMENT/END
Reply
  • Are you looking for help creating an alignment that will represent in-car co-ordinates? If you are then you should probably forget about using a readpoint to start your alignment and stick to using iterative alignments using the part's datum features. I've read a few threads and I haven't found one person that said they use readpoints successfully with in-car co-ordinates. I hate doing the manual alignments so if you find a way to implement the readpoint-start then please share. Otherwise you should just be doing 2 iterative alignments - 1 manual and 1 automatic.

    If you know how to create an iterative alignment using in-car co-ords then you can ignore the rest of this post.

    Basically you have to figure out your workplane, then use the auto-features to pick your 4way, 2 way, and net points off the cad (click beside the hole on the cad and the co-ords and vectors should autogenerate which makes this really easy. Use the provided co-ords on the GD&T for your nets). Align the part to them and take your manual hits. Then copy-paste the alignment with slight name changes right below it, create your movepoints to avoid crashes, then run it in DCC mode.

    If you're using a fixture with tooling balls or holes (as opposed to a free state setup) then it's a little different but not much more difficult. Set your workplane, create 3 spheres with the co-ords labelled on the fixture for each tooling ball. They'll form a triangle on the fixture. The sphere that's in the middle is your master, the short side is your plane and the long side is the line. Create an iterative alignment with the three tooling balls. Align the part to them and take your manual hits. Then copy-paste the alignment with slight name changes right below it, create your movepoints to avoid crashes, then run it in DCC mode.

    I attached an alignment using datum features below.

    If you didn't need any of this info then sorry for the text-dump. I'm relatively new to programming pc-dmis too so I don't have 1/10 the knowledge that most of these guys do (but I can create programs from scratch and they work great so I've got that going for me which is nice). 

                WORKPLANE/XPLUS
            TIP/T1A0B0, SHANKIJK=0, 0, 1, ANGLE=0
            MOVESPEED/ 300
            TOUCHSPEED/ 2
            PREHIT/ 4
            RETRACT/ 4
            COMMENT/OPER,NO,PLACE PART ON TABLE WITH 4-WAY AT FRONT OF CMM
                           ,TAKE HITS ON MANUAL ALIGNMENT PTS.
A1_M       =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/1459.6,-750.295,31.6,0,1,0
            ACTL/428.503,-50.721,-422.588,0,1,0
            TARG/1459.6,-750.295,31.6,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
D1_M       =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/1459.6,-750.295,0.63,0,1,0
            ACTL/454.187,-34.793,-422.577,0,1,0
            TARG/1459.6,-750.295,0.63,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
A2_M       =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/431.56,-750.295,33.76,0,1,0
            ACTL/-89.648,836.199,-422.676,0,1,0
            TARG/431.56,-750.295,33.76,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
A3_M       =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/430.4,-750.295,-5.44,0,1,0
            ACTL/-57.515,857.247,-422.681,0,1,0
            TARG/430.4,-750.295,-5.44,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
2_WAY_M    =AUTO/CIRCLE,SHOWALLPARAMS = YES,SHOWHITS = NO
            THEO/500.503,-747.295,-3.988,0,1,0,13.121
            ACTL/500.503,-747.295,-3.988,0,1,0,13.295
            TARG/500.503,-747.295,-3.988,0,1,0
            THEO_THICKNESS = 0,RECT,IN,CIRCULAR,LEAST_SQR,ONERROR = NO,$
            AUTO MOVE = NO,DISTANCE = 5,RMEAS = None,None,None,$
            READ POS = NO,FIND HOLE = NO,REMEASURE = NO,$
            NUMHITS = 4,INIT = 3,PERM = 3,SPACER = 1,PITCH = 0,$
            START ANG = 0,END ANG = 0,DEPTH = 0.3,$
            ANGLE VEC = -1,0,0
4_WAY_M    =AUTO/CIRCLE,SHOWALLPARAMS = YES,SHOWHITS = NO
            THEO/1263.5,-747.295,1.507,0,1,0,14.1
            ACTL/355.089,135.405,-420.145,0.0112641,0.0031174,0.9999317,15.322
            TARG/1263.5,-747.295,1.507,0,1,0
            THEO_THICKNESS = 0,RECT,IN,CIRCULAR,LEAST_SQR,ONERROR = NO,$
            AUTO MOVE = NO,DISTANCE = 5,RMEAS = None,None,None,$
            READ POS = NO,FIND HOLE = NO,REMEASURE = NO,$
            NUMHITS = 4,INIT = 3,PERM = 3,SPACER = 1,PITCH = 0,$
            START ANG = 0,END ANG = 0,DEPTH = 0.3,$
            ANGLE VEC = -1,0,0
A0         =ALIGNMENT/START,RECALL:STARTUP, LIST= YES
            ALIGNMENT/ITERATE
              PNT TARGET RAD = 4, START LABEL = , FIXTURE TOL = 0.12, ERROR LABEL = 
              MEAS ALL FEAT = NO ,MAX ITERATIONS = 99 ,LEVEL AXIS=YAXIS ,ROTATE AXIS=ZAXIS ,ORIGIN AXIS=XAXIS
            LEVEL = A1_M,D1_M,A2_M,A3_M,,
            ROTATE = 4_WAY_M,2_WAY_M,,
            ORIGIN = 4_WAY_M,,
            ALIGNMENT/END
            COMMENT/OPER,NO,PREPARE FOR DCC MOVES
            MODE/DCC
            MOVE/POINT,NORMAL,1067.307,-603.49,-12.302
2_WAY_ALIGN =AUTO/CIRCLE,SHOWALLPARAMS = YES,SHOWHITS = NO
            THEO/500.503,-747.295,-3.988,0,1,0,13.121
            ACTL/500.545,-747.166,-3.989,-0.0045131,0.9999816,-0.0040449,13.442
            TARG/500.503,-747.295,-3.988,0,1,0
            THEO_THICKNESS = 0,RECT,IN,CIRCULAR,LEAST_SQR,ONERROR = NO,$
            AUTO MOVE = AFTER,DISTANCE = 15,RMEAS = None,None,None,$
            READ POS = NO,FIND HOLE = NO,REMEASURE = NO,$
            NUMHITS = 6,INIT = 3,PERM = 3,SPACER = 2.5,PITCH = 0,$
            START ANG = 0,END ANG = 0,DEPTH = 0.3,$
            ANGLE VEC = -1,0,0
4_WAY_ALIGN =AUTO/CIRCLE,SHOWALLPARAMS = YES,SHOWHITS = NO
            THEO/1263.5,-747.295,1.507,0,1,0,14.1
            ACTL/1263.542,-746.838,1.677,-0.0058916,0.9998773,-0.0145167,14.351
            TARG/1263.5,-747.295,1.507,0,1,0
            THEO_THICKNESS = 0,RECT,IN,CIRCULAR,LEAST_SQR,ONERROR = NO,$
            AUTO MOVE = AFTER,DISTANCE = 5,RMEAS = None,None,None,$
            READ POS = NO,FIND HOLE = NO,REMEASURE = NO,$
            NUMHITS = 6,INIT = 3,PERM = 3,SPACER = 2.5,PITCH = 0,$
            START ANG = 0,END ANG = 0,DEPTH = 0.5,$
            ANGLE VEC = -1,0,0
A1         =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/1459.6,-750.295,31.6,0,1,0
            ACTL/1459.594,-750.298,31.608,0.0000018,1,0.0001233
            TARG/1459.6,-750.295,31.6,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
            MOVE/POINT,NORMAL,1446.821,-656.891,16.713
D1         =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/1459.6,-750.295,0.63,0,1,0
            ACTL/1459.593,-750.291,0.637,0.0000018,1,0.0001233
            TARG/1459.6,-750.295,0.63,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
            MOVE/POINT,NORMAL,1446.821,-656.891,16.713
            MOVE/POINT,NORMAL,947.619,-626.136,13.508
A2         =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/431.56,-750.295,33.76,0,1,0
            ACTL/431.566,-750.293,33.765,0.0000018,1,0.0001233
            TARG/431.56,-750.295,33.76,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
A3         =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/430.4,-750.295,-5.44,0,1,0
            ACTL/430.402,-750.291,-5.426,0.0000018,1,0.0001233
            TARG/430.4,-750.295,-5.44,0,1,0
            THEO_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = NO,DISTANCE = 5
A4         =ALIGNMENT/START,RECALL:A0, LIST= YES
            ALIGNMENT/ITERATE
              PNT TARGET RAD = 4, START LABEL = , FIXTURE TOL = 0.12, ERROR LABEL = 
              MEAS ALL FEAT = NO ,MAX ITERATIONS = 99 ,LEVEL AXIS=YAXIS ,ROTATE AXIS=ZAXIS ,ORIGIN AXIS=XAXIS
            LEVEL = A1,D1,A2,A3,,
            ROTATE = 4_WAY_ALIGN,2_WAY_ALIGN,,
            ORIGIN = 4_WAY_ALIGN,,
            ALIGNMENT/END
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