I have a looping question

Where to start…. I have been programming for about a year. I am not too much of a noob but I do not have any one to really turn too and ask for help (besides you guys and gals). So I have been playing around with my cmm, making a program then making a loop program out of that…. Now I have ran into problems doing this.

-first problem is If I stop the program in the middle of the loop, pcdmis thinks that the current piece whether it be 2,3,4,5,6 is the first piece to start on. I noticed that the actual coordinates on features are off and stuck. Why is that?

-after avoiding that, my Theo’s keep changing on me. I do not have CAD models so I have to change my Theo’s manually. After running the program they always keep changing. Any way to stop that?

-I guess I am just asking someone to take a look over what I have, I need some senior programmers to teach this young buck some knowledge please here is a picture of my set-up and some code … any advice will help and I am not afraid to take criticism

p.s. I left my manual alignment to show y’all how its changing up on me.

=ALIGNMENT/START,RECALL:USE_PART_SETUP,LIST=YES
            ALIGNMENT/END
            MODE/MANUAL
            MOVESPEED/ 100
            FORMAT/TEXT,OPTIONS, ,HEADINGS,SYMBOLS, ;NOM,TOL,MEAS,DEV,OUTTOL, , 
            LOADPROBE/LLDAWG_TIP1 2X30 TIP2 3X50
            TIP/TIP1, SHANKIJK=0, 0, 1, ANGLE=0
         
MAN_PLNA   =FEAT/PLANE,CARTESIAN,TRIANGLE
            THEO/<10.39954,-0.91716,-27.00211>,<0,0,1>
            ACTL/<10.29746,-0.85066,-27.00047>,<0.0000813,-0.0034436,0.9999941>
            MEAS/PLANE,4
            HIT/BASIC,NORMAL,<2.24446,-0.9518,-26.99909>,<0.0002452,0.0062019,0.9999807>,<2.89135,-0.58091,-27.00009>,USE THEO=YES
            HIT/BASIC,NORMAL,<10.61085,-1.27203,-27.00125>,<0.0002452,0.0062019,0.9999807>,<18.65044,-0.42268,-26.99876>,USE THEO=YES
            HIT/BASIC,NORMAL,<16.79155,-0.97871,-27.00204>,<0.0002452,0.0062019,0.9999807>,<13.03635,-1.1995,-27.00427>,USE THEO=YES
            HIT/BASIC,NORMAL,<11.95131,-0.46609,-27.00607>,<0.0002452,0.0062019,0.9999807>,<6.6117,-1.19955,-26.99876>,USE THEO=YES
            ENDMEAS/
$$ NO,
            
A1         =ALIGNMENT/START,RECALL:STARTUP,LIST=YES
            ALIGNMENT/LEVEL,ZPLUS,MAN_PLNA
            ALIGNMENT/END
            COMMENT/OPER,NO,FULL SCREEN=NO,AUTO-CONTINUE=NO,
            ALIGNMENT
            MAKE LINE ON Y-MINUS/FRONT
$$ NO,
            
MAN_LINEB  =FEAT/LINE,CARTESIAN,UNBOUNDED
            THEO/<2.95008,-1.28824,-27.17141>,<1,0.0000004,0>
            ACTL/<2.24178,-1.54568,-27.14377>,<0.9999997,-0.0008179,0>
            MEAS/LINE,2,ZPLUS
            HIT/BASIC,NORMAL,<2.95008,-1.28824,-27.17326>,<-0.0008712,-0.9999996,0>,<2.24178,-1.54568,-27.14469>,USE THEO=YES
            HIT/BASIC,NORMAL,<18.51021,-1.3018,-27.16955>,<-0.0008712,-0.9999996,0>,<19.00739,-1.55939,-27.14285>,USE THEO=YES
            ENDMEAS/
$$ NO,
            
A2         =ALIGNMENT/START,RECALL:A1,LIST=YES
            ALIGNMENT/ROTATE,XPLUS,TO,MAN_LINEB,ABOUT,ZPLUS
            ALIGNMENT/END
MAN_PNTC   =FEAT/POINT,CARTESIAN
            THEO/<1.99161,-0.72581,-27.07116>,<-1,0.0000022,0>
            ACTL/<1.98758,-1.25369,-27.14727>,<-0.9999969,0.0009674,0.0022823>
            MEAS/POINT,1,WORKPLANE
            HIT/BASIC,NORMAL,<1.99161,-0.72581,-27.07116>,<-1,0.0000022,0>,<1.98758,-1.25369,-27.14727>,USE THEO=YES
            ENDMEAS/
$$ NO,
            
A3         =ALIGNMENT/START,RECALL:A2,LIST=YES
            ALIGNMENT/TRANS,ZAXIS,MAN_PLNA
            ALIGNMENT/TRANS,YAXIS,MAN_LINEB
            ALIGNMENT/TRANS,XAXIS,MAN_PNTC
            ALIGNMENT/END
$$ NO,
            
$$ NO,
            
C1         =COMMENT/INPUT,NO,FULL SCREEN=NO,
            what serial number is this?
$$ NO,
            
            ASSIGN/VCOUNT=0+C1.INPUT
$$ NO,
            
            MODE/DCC
$$ NO,
            
$$ NO,
            
$$ NO,
            
$$ NO,
            
V2         =LOOP/START,ID=YES,NUMBER=3,START=1,SKIP=,
              OFFSET:XAXIS=0,YAXIS=18.25,ZAXIS=5,ANGLE=0
V1         =LOOP/START,ID=YES,NUMBER=3,START=1,SKIP=,
              OFFSET:XAXIS=0,YAXIS=6,ZAXIS=0,ANGLE=0
            MODE/DCC
$$ NO,
            
            DISPLAYPRECISION/4
            FASTPROBEMODE/ON
            MOVESPEED/ 300
            PREHIT/0.1
            RETRACT/0.1
            TRACEFIELD/NO_DISPLAY,LIMIT=15 ; P.O. : 
            TRACEFIELD/NO_DISPLAY,LIMIT=25 ; DRAWING NUMBER : 
            TRACEFIELD/NO_DISPLAY,LIMIT=15 ; INSPECTOR : 
            TRACEFIELD/NO_DISPLAY,LIMIT=15 ; JOB NUMBER : 
            TRACEFIELD/NO_DISPLAY,LIMIT=15 ; HEAT NUMBER : 
            TRACEFIELD/NO_DISPLAY,LIMIT=15 ; VIN NUMBER : 
            TRACEFIELD/NO_DISPLAY,LIMIT=15 ; CUSTOMER : 
            TRACEFIELD/NO_DISPLAY,LIMIT=15 ; SERIAL NUMBER : VCOUNT
            MOVE/POINT,NORMAL,<-0.1515,0.5576,0.3125>
$$ NO,
            
PLNA       =FEAT/PLANE,CARTESIAN,TRIANGLE
            THEO/<8.4562,0.6582,0.0018>,<-0.0003726,0.0020609,0.9999978>
            ACTL/<8.4563,0.6577,-0.0255>,<-0.0003947,0.0122227,0.9999252>
            MEAS/PLANE,6
            HIT/BASIC,NORMAL,<0.1267,0.6388,0.0005>,<-0.0003726,0.0020609,0.9999978>,<0.1268,0.6387,-0.0391>,USE THEO=YES
            HIT/BASIC,NORMAL,<4.7994,1.0227,0.0027>,<-0.0003726,0.0020609,0.9999978>,<4.7995,1.0226,-0.0492>,USE THEO=YES
            HIT/BASIC,NORMAL,<11.7019,1.0676,-0.0009>,<-0.0003726,0.0020609,0.9999978>,<11.702,1.0675,-0.0561>,USE THEO=YES
            HIT/BASIC,NORMAL,<17.7592,0.4945,0.0109>,<-0.0003726,0.0020609,0.9999978>,<17.7593,0.4944,-0.0396>,USE THEO=YES
            HIT/BASIC,NORMAL,<11.9732,0.6058,-0.0022>,<-0.0003726,0.0020609,0.9999978>,<11.9733,0.6057,-0.0538>,USE THEO=YES
            HIT/BASIC,NORMAL,<4.3769,0.1195,0>,<-0.0003726,0.0020609,0.9999978>,<4.377,0.1194,-0.0252>,USE THEO=YES
            ENDMEAS/
            MOVE/POINT,NORMAL,<-0.1431,-0.1238,0.2051>
$$ NO,
            
LINB       =FEAT/LINE,CARTESIAN,UNBOUNDED
            THEO/<0.6638,0.0267,-0.0699>,<1,-0.0000939,0>
            ACTL/<0.6638,0.0318,-0.0697>,<1,0.000208,0>
            MEAS/LINE,2,ZPLUS
            HIT/BASIC,NORMAL,<0.6638,0.0267,-0.0719>,<-0.0000939,-1,0>,<0.6639,0.0318,-0.0717>,USE THEO=YES
            HIT/BASIC,NORMAL,<17.5832,0.0251,-0.0679>,<-0.0000939,-1,0>,<17.5833,0.0353,-0.0677>,USE THEO=YES
            ENDMEAS/
            MOVE/POINT,NORMAL,<-0.2919,-0.3716,-0.0759>
PNTC       =FEAT/POINT,CARTESIAN
            THEO/<-0.0107,0.2214,-0.0721>,<-1,0.0000022,0>
            ACTL/<-0.0107,0.2214,-0.0721>,<-1,0.0000022,0>
            MEAS/POINT,1,WORKPLANE
            HIT/BASIC,NORMAL,<0.0002,0.2213,-0.0723>,<-1,0.0000022,0>,<-0.0107,0.2214,-0.0721>,USE THEO=YES
            ENDMEAS/
$$ NO,
            
            PREHIT/0.06
            RETRACT/0.06
A4         =ALIGNMENT/START,RECALL:A3,LIST=YES
            ALIGNMENT/LEVEL,ZPLUS,PLNA
            ALIGNMENT/ROTATE,XPLUS,TO,LINB,ABOUT,ZPLUS
            ALIGNMENT/TRANS,XAXIS,PNTC
            ALIGNMENT/TRANS,YAXIS,LINB
            ALIGNMENT/TRANS,ZAXIS,PLNA
            ALIGNMENT/END


$$ NO,=====================================================
            
GRP1       =GROUP/SHOWALLPARAMS=NO    HAD TO CONDENSE THIS
            ENDGROUP/ID=GRP1          @@@@@@PROGRAM@@@@@@@     
$$ NO,=====================================================


        

    
C2         =COMMENT/YESNO,NO,FULL SCREEN=NO,AUTO-CONTINUE=YES,TIME DELAY=5,
            KEEP GOING?
$$ NO,
            
            IF_GOTO/C2.INPUT=="NO" ,GOTO = L1
$$ NO,
            
            ASSIGN/VCOUNT=VCOUNT+1
$$ NO,
            [ATTACH=CONFIG]9069[/ATTACH]
            TRACEFIELD/NO_DISPLAY,LIMIT=15 ; SERIAL NUMBER : VCOUNT
            REPORT/LABEL, FILENAME= PPAP ITEM DIMENSION (2) NOT COPY.LBL
$$ NO,
            
L1         =LABEL/
$$ NO,

Attached Files

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Matthew D. Hoedeman over 11 years ago

Matt I,m a little confuse though. I run a Gantry cmm. My table is not attched to my cmm. I use dowels usually for my rotation on my parts. Most parts I check do have dowels with tight location so they are ethier bored or reamed in. My question is with my table not being realtive to my machine could this not have effect on my circles that I will use for rotation if I have not leveled the part?

Yes and/or no.

Will it have an effect on the shape of the circle if measured in MCS for the manual alignment? Yes

Will it have an effect on the shape of the circle if measured using the measured plane as the workplane? No

Will it have an effect on the shape of the circle if measured ONLY FOR the manual/rough alignment if measured in MCS? Yes, but who cares, your (mandatory!) DCC alignment will be 'level' to your level feature, at worst (and I have tested and proved this myself for myself) your DCC touches will be slightly off target due to the 'form error' you have in your manual/rough alignment.

Case in point for my 'proof'. I quite often used to have to check tall details to verify them. Tall details with DOWELS in them. Can't reach the dowels from the top with the detail sitting on the table base down. Can't set the detail base up as there is shape on the top, so, they sit sideways (bottom to rear of table was my usual method) and I then measure the bottom. This is where the 'proof' comes in.

I generally had to go off a datum corner, NOT a dowel, to verify these details since the dowels, while master in the assembly, were not master in the fabrication of the detail. So, I would measure a plane and 2 lines for the datum corner, intersect the lines for a point, the level, rotate, origins the detail, all in one alignment. THIS WAS FOR THE MANUAL/ROUGH alignment (IMO, any manual alignment is ONLY a rough alignment) only! So, I now have a correctly comped plane that has been used for level, 1 or 2 incorrectly comped lines used for rotate & 'XY" origin. I know it is a correctly comped plane because it was measured as a plane, not as points then contructed, and planes are 3-D features and NOT workplane dependant.

So, the 'base' of my rough alignment is 'perfect', the lines, however, got 'funky' comp since they were measured in MCS and not using the measured plane, so my datum corner is 'off' in 1 or 2 directions by the incorrect comp (which, if you do the math, isn't any where NEAR as bad as you might think it is, you have to be really REALLY out of 'true' for any significant error build up), and thus the "XY" origins are not correct either. BUT THE Z is correct, every time (and I've 'tested' this on numerous details). Now, in DCC mode, I measure points, for the plane and the edges to create the FINAL features for the alignment. The points for the base will have (and do have) perfect vectors (0,0,-1). The points for the edges have perfect vectors (0,-1,0 and -1,0,0). The plane constructed has a 'perfect' vector (form error will make it 'slightly' off, like 0,0000003,0.000021,1), the lines constructed will have the correct vectors and probe comp (since my rough alignment DID make the base square to the machine) and the intersection point will be correctly positioned at the corner.

Thus, no need to "get square" to "be sqaure", but you have to follow (IMO) a good process to do it. Never use a rough alignment as a final alignment, and you must understand what and how your machine gets what it gets and how it gets it.

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Matthew D. Hoedeman over 11 years ago

Matt I,m a little confuse though. I run a Gantry cmm. My table is not attched to my cmm. I use dowels usually for my rotation on my parts. Most parts I check do have dowels with tight location so they are ethier bored or reamed in. My question is with my table not being realtive to my machine could this not have effect on my circles that I will use for rotation if I have not leveled the part?

Yes and/or no.

Will it have an effect on the shape of the circle if measured in MCS for the manual alignment? Yes

Will it have an effect on the shape of the circle if measured using the measured plane as the workplane? No

Will it have an effect on the shape of the circle if measured ONLY FOR the manual/rough alignment if measured in MCS? Yes, but who cares, your (mandatory!) DCC alignment will be 'level' to your level feature, at worst (and I have tested and proved this myself for myself) your DCC touches will be slightly off target due to the 'form error' you have in your manual/rough alignment.

Case in point for my 'proof'. I quite often used to have to check tall details to verify them. Tall details with DOWELS in them. Can't reach the dowels from the top with the detail sitting on the table base down. Can't set the detail base up as there is shape on the top, so, they sit sideways (bottom to rear of table was my usual method) and I then measure the bottom. This is where the 'proof' comes in.

I generally had to go off a datum corner, NOT a dowel, to verify these details since the dowels, while master in the assembly, were not master in the fabrication of the detail. So, I would measure a plane and 2 lines for the datum corner, intersect the lines for a point, the level, rotate, origins the detail, all in one alignment. THIS WAS FOR THE MANUAL/ROUGH alignment (IMO, any manual alignment is ONLY a rough alignment) only! So, I now have a correctly comped plane that has been used for level, 1 or 2 incorrectly comped lines used for rotate & 'XY" origin. I know it is a correctly comped plane because it was measured as a plane, not as points then contructed, and planes are 3-D features and NOT workplane dependant.

So, the 'base' of my rough alignment is 'perfect', the lines, however, got 'funky' comp since they were measured in MCS and not using the measured plane, so my datum corner is 'off' in 1 or 2 directions by the incorrect comp (which, if you do the math, isn't any where NEAR as bad as you might think it is, you have to be really REALLY out of 'true' for any significant error build up), and thus the "XY" origins are not correct either. BUT THE Z is correct, every time (and I've 'tested' this on numerous details). Now, in DCC mode, I measure points, for the plane and the edges to create the FINAL features for the alignment. The points for the base will have (and do have) perfect vectors (0,0,-1). The points for the edges have perfect vectors (0,-1,0 and -1,0,0). The plane constructed has a 'perfect' vector (form error will make it 'slightly' off, like 0,0000003,0.000021,1), the lines constructed will have the correct vectors and probe comp (since my rough alignment DID make the base square to the machine) and the intersection point will be correctly positioned at the corner.

Thus, no need to "get square" to "be sqaure", but you have to follow (IMO) a good process to do it. Never use a rough alignment as a final alignment, and you must understand what and how your machine gets what it gets and how it gets it.

Does that make sense?
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