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issue moving programs from one cmm to another.

Ksmith@dnmachining
I have an issue that I have been trying to understand for a while now. I write all my pc-dmis programs on an offline seat in Pc Dmis 2017R2. I work off of models made by our engineers. I make up the programs then I back save them to our online Pc-dmis 2013MR1 (Brown and Sharp Global silver advantage 09/12/08). Recently we have been trying to off load some of the current parts that we have from the Brown and sharp to a less used cmm that we have (Giddian & Lewis cordax 1808-mm DCC MEA). My issue is that the current programs that run on on the brown and sharp will not run on the giddian and lewis. Part orientation does not change between the 2 machines. After I do the manual alignment on the giddian and lewis, the DCC alignment begins and tries to take the first hits and wrecks. The y position reading on the giddian and lewis shows that the 0 point for the y face is .200 - .300 inch off. I do not understand how this can be the case. when i do a manual alignment and tell the cmm that the face is 0 origin. i have double and triple checked that the probes are all calibrated and built correctly. i have tried with different probes, all to have the same issue. i have only found one method to get around this and it is to physically make the manual alignment on the giddian and lewis by taking hits off of parts. Once i do that i can add in an entire program from the DCC point and it will run. I should not have to do this and its making me crazy to know why this happens. Also this issue does not seem to be a problem if the programs are made with leveling and origin in Zplus axis with probes at A0-B0. seems to only be an issue when cmm Heads rotate up to do alignments from A90-Bxx. i will post my alignment code below from the current part i am trying to move. as stated its 100% built offline and moved to brown and sharp and runs flawlessly but will not work on giddian and lewis.



​STARTUP =ALIGNMENT/START,RECALL:USE_PART_SETUP,LIST=YES
ALIGNMENT/END
MODE/MANUAL
FORMAT/TEXT,OPTIONS, ,HEADINGS,SYMBOLS, ;NOM,TOL,MEAS,DEV,OUTTOL, ,
TEMPCOMP/METHOD = AUTOMATIC,MATERIAL = Zerodur; Nexcera,CTE= 0
,SET WARNING LIMIT = FALSE,MINIMUM = 10,MAXIMUM = 40
,PART SENSOR NUM=DEFAULT,X SCALE= 20,Y SCALE= 20,Z SCALE= 20,PART TEMP=19.3488
MOVESPEED/ 100
PREHIT/0.05
RETRACT/0.05
LOADPROBE/HALF_MM_X_7
TIP/T1A90B180, SHANKIJK=0, -1, 0, ANGLE=180
WORKPLANE/YMINUS
C1 =COMMENT/INPUT,YES,FULL SCREEN=YES,
JOB NUMBER
C2 =COMMENT/INPUT,YES,FULL SCREEN=YES,
SERIAL NUMBER
COMMENT/OPER,NO,FULL SCREEN=YES,AUTO-CONTINUE=NO,
TAKE 3 HITS ON DATUM A FRONT FACE
PLN1 =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,NONE,LEAST_SQR
THEO/<0,0,0>,<0,-1,0>
ACTL/<0,0,0>,<0,-1,0>
TARG/<0,0,0>,<0,-1,0>
ANGLE VEC=<1,0,0>,RADIAL
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=3,NUMRINGS=1
SPACER=0
AVOIDANCE MOVE=NO,DISTANCE=0.3937
SHOW HITS=NO
A1 =ALIGNMENT/START,RECALL:STARTUP,LIST=YES
ALIGNMENT/LEVEL,YMINUS,PLN1
ALIGNMENT/TRANS,YAXIS,PLN1
ALIGNMENT/END
COMMENT/OPER,NO,FULL SCREEN=YES,AUTO-CONTINUE=NO,
TAKE 4 HITS AROUND .117 BOSS
CIR1 =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,OUT,LEAST_SQR
THEO/<0,-0.171,0>,<0,-1,0>,0.117,0
ACTL/<0,-0.171,0>,<0,-1,0>,0.117,0
TARG/<0,-0.171,0>,<0,-1,0>
START ANG=0,END ANG=360
ANGLE VEC=<1,0,0.>
DIRECTION=CCW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=4,DEPTH=-0.0032,PITCH=0
SAMPLE METHOD=SAMPLE_HITS
SAMPLE HITS=0,SPACER=0
AVOIDANCE MOVE=NO,DISTANCE=0.3937
FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
SHOW HITS=NO
A2 =ALIGNMENT/START,RECALL:A1,LIST=YES
ALIGNMENT/LEVEL,YMINUS,PLN1
ALIGNMENT/TRANS,YAXIS,PLN1
ALIGNMENT/TRANS,XAXIS,CIR1
ALIGNMENT/TRANS,ZAXIS,CIR1
ALIGNMENT/END
COMMENT/OPER,NO,FULL SCREEN=YES,AUTO-CONTINUE=NO,
TAKE 1 HIT ON THE ARM CLOSE TO THE END.
PNT1 =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
THEO/<-1.9855,0.05,-0.26>,<0,0,1>
ACTL/<-1.9855,0.05,-0.26>,<0,0,1>
TARG/<-1.9855,0.05,-0.26>,<0,0,1>
SNAP=NO
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
AVOIDANCE MOVE=NO,DISTANCE=0.3937
SHOW HITS=NO
COMMENT/OPER,NO,FULL SCREEN=YES,AUTO-CONTINUE=NO,
TAKE 1 HIT ON THE ARM CLOSE TO THE BEND.
PNT2 =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
THEO/<-1.5,0.05,-0.26>,<0,0,1>
ACTL/<-1.5,0.05,-0.26>,<0,0,1>
TARG/<-1.5,0.05,-0.26>,<0,0,1>
SNAP=NO
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
AVOIDANCE MOVE=NO,DISTANCE=0.3937
SHOW HITS=NO
LIN1 =FEAT/LINE,CARTESIAN,UNBOUNDED,YES
THEO/<-1.9855,0.05,-0.26>,<1,0,0>
ACTL/<-1.9855,0.0506,-0.26>,<1,0,0>
CONSTR/LINE,BF,2D,PNT1,PNT2,,
OUTLIER_REMOVAL/OFF,3
FILTER/OFF,WAVELENGTH=0
A3 =ALIGNMENT/START,RECALL:A2,LIST=YES
ALIGNMENT/LEVEL,YMINUS,PLN1
ALIGNMENT/ROTATE,XPLUS,TO,LIN1,ABOUT,YMINUS
ALIGNMENT/TRANS,YAXIS,PLN1
ALIGNMENT/TRANS,XAXIS,CIR1
ALIGNMENT/TRANS,ZAXIS,CIR1
ALIGNMENT/END
MODE/DCC
CLEARP/YMINUS,-0.7,YMINUS,-0.7,ON
MOVE/CLEARPLANE
PNT3 =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
THEO/<-0.6216,0,-0.179>,<0,-1,0>
ACTL/<-0.6216,0,-0.179>,<0,-1,0>
TARG/<-0.6216,0,-0.179>,<0,-1,0>
SNAP=NO
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
AVOIDANCE MOVE=NO,DISTANCE=0.3937
SHOW HITS=NO
PNT4 =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
THEO/<-0.4296,0,-0.1769>,<0,-1,0>
ACTL/<-0.4296,0,-0.1769>,<0,-1,0>
TARG/<-0.4296,0,-0.1769>,<0,-1,0>
SNAP=NO
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
AVOIDANCE MOVE=NO,DISTANCE=0.3937
SHOW HITS=NO
PNT5 =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
THEO/<-0.3144,0,-0.0617>,<0,-1,0>
ACTL/<-0.3144,0,-0.0617>,<0,-1,0>
TARG/<-0.3144,0,-0.0617>,<0,-1,0>
SNAP=NO
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
AVOIDANCE MOVE=NO,DISTANCE=0.3937
SHOW HITS=NO
PNT6 =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
THEO/<-0.149,0,-0.127>,<0,-1,0>
ACTL/<-0.149,0,-0.127>,<0,-1,0>
TARG/<-0.149,0,-0.127>,<0,-1,0>
SNAP=NO
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
AVOIDANCE MOVE=NO,DISTANCE=0.3937
SHOW HITS=NO
PLN_DAT_A_FRONT_FACE=FEAT/PLANE,CARTESIAN,TRIANGLE,NO
THEO/<-0.3787,0,-0.1362>,<0,-1,0>
ACTL/<-0.3787,0,-0.1362>,<0,-1,0>
CONSTR/PLANE,BF,PNT3,PNT4,PNT5,PNT6,,
OUTLIER_REMOVAL/OFF,3
FILTER/OFF,WAVELENGTH=0
A4 =ALIGNMENT/START,RECALL:A3,LIST=YES
ALIGNMENT/LEVEL,YMINUS,PLN_DAT_A_FRONT_FACE
ALIGNMENT/TRANS,YAXIS,PLN_DAT_A_FRONT_FACE
ALIGNMENT/END
MOVE/CLEARPLANE
CIR2 =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,OUT,LEAST_SQR
THEO/<0,-0.171,0>,<0,-1,0>,0.117,0
ACTL/<0,-0.171,0>,<0,-1,0>,0.117,0
TARG/<0,-0.171,0>,<0,-1,0>
START ANG=0,END ANG=360
ANGLE VEC=<1,0,0>
DIRECTION=CCW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=7,DEPTH=-0.05,PITCH=0
SAMPLE METHOD=SAMPLE_HITS
SAMPLE HITS=0,SPACER=0
AVOIDANCE MOVE=NO,DISTANCE=0.3937
FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
SHOW HITS=NO
A5 =ALIGNMENT/START,RECALL:A4,LIST=YES
ALIGNMENT/LEVEL,YMINUS,PLN_DAT_A_FRONT_FACE
ALIGNMENT/TRANS,YAXIS,PLN_DAT_A_FRONT_FACE
ALIGNMENT/TRANS,XAXIS,CIR2
ALIGNMENT/TRANS,ZAXIS,CIR2
ALIGNMENT/END
MOVE/CLEARPLANE
PNT7 =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
THEO/<-1.9855,0.05,-0.26>,<0,0,1>
ACTL/<-1.9855,0.05,-0.26>,<0,0,1>
TARG/<-1.9855,0.05,-0.26>,<0,0,1>
SNAP=NO
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
AVOIDANCE MOVE=NO,DISTANCE=0.3937
SHOW HITS=NO
MOVE/CLEARPLANE
PNT9 =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
THEO/<-1.5,0.05,-0.26>,<0,0,1>
ACTL/<-1.5,0.05,-0.26>,<0,0,1>
TARG/<-1.5,0.05,-0.26>,<0,0,1>
SNAP=NO
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
AVOIDANCE MOVE=NO,DISTANCE=0.3937
SHOW HITS=NO
LIN2 =FEAT/LINE,CARTESIAN,UNBOUNDED,YES
THEO/<-1.9855,0.05,-0.26>,<1,0,0>
ACTL/<-1.9855,0.05,-0.26>,<1,0,0>
CONSTR/LINE,BF,2D,PNT7,PNT9,,
OUTLIER_REMOVAL/OFF,3
FILTER/OFF,WAVELENGTH=0
A6 =ALIGNMENT/START,RECALL:A5,LIST=YES
ALIGNMENT/LEVEL,YMINUS,PLN_DAT_A_FRONT_FACE
ALIGNMENT/ROTATE,XPLUS,TO,LIN2,ABOUT,YMINUS
ALIGNMENT/TRANS,YAXIS,PLN_DAT_A_FRONT_FACE
ALIGNMENT/TRANS,XAXIS,CIR2
ALIGNMENT/TRANS,ZAXIS,CIR2
ALIGNMENT/END​
  • Brown and Sharp Global ==Hexagon, I do not have lots of experience. It looks you offline programs ok on B&S, but have issues with Giddian & Lewis. Have you tried copy programs to Giddian & Lewis created template?
  • in reply to RobOntario
    I have tried this and I get the same results.
  • Make sure the machine axises are set like your Global so these does not differ. If you have an axis mismatch between the machines and you place the part like on the Global, it probably won't work. If you would place the part so it matches the globals axises on the other machine, it could work.
  • in reply to vpt.se
    Both CMM's are using the same Axises setup. I make sure to set the part up the same way on both CMM as well so that there should not be any issues.
  • Try increasing your space to something larger than 0. 

    PLN1 =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,NONE,LEAST_SQR
THEO/<0,0,0>,<0,-1,0>
ACTL/<0,0,0>,<0,-1,0>
TARG/<0,0,0>,<0,-1,0>
ANGLE VEC=<1,0,0>,RADIAL
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=3,NUMRINGS=1
SPACER=0
AVOIDANCE MOVE=NO,DISTANCE=0.3937
SHOW HITS=NO​
  • You wrote a program with a manual alignment to the machine origin and then dcc measurement. You should run the manual alignment (in order to setup program) to run on both machines, once manual alignment is done you can then un-mark that portion of the program. From then on the program should run as long as 1)the machine origin hasn't changed (significantly) (I have a CMM that does this occaisionally)...and 2) you set up the part within the prehit / retract distance that you previously did for the manual alignment. Why would you think you wouldn't have to run the manual alignment on a different machine? The manual alignment is for defining where the part is and in what orientation it is....relative to the machine origin...or home (as your program is in this case is written). You are not putting the part in the same location / orientation on the new machine relative to the machine home...so you have to run the manual alignment...it sounds like you didn't understand that...forgive me if I'm wrong....just trying to help here.

    I hate fighting with PCDMIS with this manual alignment / dcc program scheme. Using CAD=PART or F5 PART / MACHINE SETUP....I'm sure these are useful in certain situations....but, I always end up running into PCDMIS not liking the manual numbers fed to it on different machine or otherwise, because they aren't going to be near nominal unless you were really particular about your set up (in PC-DMIS) ...blah blah blah.

    I have found the least painless way to write programs and not have to deal with the above....is to use External Alignments instead. I program mostly for circular parts...hence my example.

    Example part = a 12 inch O.D., 1 inch thick, 6 inch I.D. washer shaped ring with a hole drilled through the 1 inch thickness.
    I have one machine a 9.9.7 that has a square volume and it has a threaded hole (in the granite) in the center of that volume which I instruct operators to set-up the part on.
    ​
    I have previously made External alignment programs and saved alignments....for this example the External alignment is called "TABLE_CENTER". This program establishes the granite surface and that center hole as 0,0,0. So, now when I set up a part as below...i know what the coordinates are and can go straight in to DCC and not use a manual alignment. I will do a rough measurement / alignment and then final...but all dcc.
    Ex. Setup instructions: Center ring on table center hole with the one drilled hole at 6 o'clock / front center of machine.
    Put probe tip in center of 6 o'clock hole. From here the program starts with a read point that is placed into an auto circle target and that 6 o'clock hole is measured and we're off to the races...

    Now when I want to revise this program to another machine...let's say a 12.20.10, I will simply replace the recall of that external alignment with lets say a "3RD_HOLE_CENTER" and of course say no to that question that pops up when you change an alignment. See this new machine has a rectangular volume. It is longer in the Y, so I have to have external alignments that are different on the Y location in the machine volume...but when I revise this program to the larger machine with the rectangular volume the program is all relative to a 0,0,0 of a hole in the granite of my choosing....and not a point somewhere in space.


    Hope this helps, Zero_micron_filter
  • in reply to Zero_micron_filter
    Sorry if i did not make this clear. I do the manual alignment for both CMM's. That is why im so confused as to why the program does not work. When i move the program over to the cordax cmm i orientate the part the same way i do on the Brown and sharp cmm so they are in same axis and then I do the manual alignment for the program because thats is the only way you can tell the machine exactly where the part is. but for some reason after taking the hits for the manual alignment the cmm is supposed to level and origin to the PLN1. that sets the face as 0. the DCC alignment starts and tries to go to that 0 point and hits that face as the cmm thinks the 0 origin face is .300 inchs further then it actually is. Again this is an identical program that works correctly on the brown and sharp.
  • Well, if nominals didn't flip / change even though you said "no", then try giving it a prehit / retract of 0.5 inch until it has the part in dcc alignment. It looks like you have 0.050 set.
  • Try running the program in OFFLINE mode first before transferring it to the CMM that is not working for you, won’t say this will work but it’s worth a try
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