Xactmeasure axis swap

This is probably the last xact-straw for me.

After a week of waiting for the insider Ace card to get back on the compound datum and page break data drop I have heard not a peep. Now I have a new Xactmare. When I create a position dimension, inexplicably the x and y nominal and measured data is caticornered. That is the X nom is -1.6 and the -.72. The measured values in the autofeature in the edit window show -1.59781 & -.71840. All hunkydoryish. Then when I use Xactmeasure to report the position is show the correct noms, but for -1.6 the measured shows -.71779 and the -.72 shows 1.59769. I then dimension the straight location for the same feature, in a vain attempt to understand, and is shows the same as the edit window autofeature.

I have tried all the possible combinations of options in the advanced tab of the position window. I am going to resort to 1-800-343-7933 to ensure they have record of my xactwoes.

Has anyone else seen this? TIA

DATUM_S    =FEAT/CONTACT/CYLINDER,CARTESIAN,IN,LEAST_SQR
            THEO/<-1.6,-0.72,-9.75>,<0,0,1>,1,0.75
            ACTL/<-1.59781,-0.7184,-9.75>,<-0.0002616,0.0002607,0.9999999>,1.00121,0.75
            TARG/<-1.6,-0.72,-9.75>,<0,0,1>
            START ANG=0,END ANG=360
            DIRECTION=CCW
            ANGLE VEC=<1,0,0>
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=YES
              NUMHITS=7,NUMLEVELS=3,DEPTH=0.2,END OFFSET=0.1,PITCH=0
              SAMPLE HITS=0,SPACER=0
              AVOIDANCE MOVE=NO,DISTANCE=0
              FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
            SHOW HITS=NO
79, 138, 167 =TRUE POSITION OF DATUM_S
            FEATCTRLFRAME/SHOWNOMS=NO,SHOWPARAMS=YES,SHOWEXPANDED=YES
            CADGRAPH=OFF,REPORTGRAPH=OFF,TEXT=OFF,MULT=10.00,ARROWDENSITY=100,OUTPUT=BOTH,UNITS=IN
            COMPOSITE=NO,FIT TO DATUMS=YES,DEV PERPEN CENTERLINE=ON,OUTPUT ALIGNMENT=Datum Reference Frame
              PRIMARY DIMENSION/TRUE POSITION,DIAMETER,0.01,<MC>,<PZ>,<len>,B,A,C
              SECONDARY DIMENSION/<Dim>,<tol>,<MC>,M,<dat>,<dat>
              NOTE/79, 138, 167
            FEATURES/DATUM_S,,
DIM TESTHOLE_1= LOCATION OF CYLINDER DATUM_S  UNITS=IN ,$
GRAPH=OFF  TEXT=OFF  MULT=10.00  OUTPUT=BOTH  HALF ANGLE=NO
AX    NOMINAL       +TOL       -TOL       MEAS        DEV     OUTTOL
X     -1.60000    0.00300    0.00300   -1.59781    0.00219    0.00000
Y     -0.72000    0.00300    0.00300   -0.71840    0.00160    0.00000
D      1.00000    0.00200    0.00000    1.00121    0.00121    0.00000
END OF DIMENSION TESTHOLE_1

Attached Files

rsegriggy over 14 years ago

You're using Datum Alignment. Depending on how your cylinder was created, it can be 90 degrees off from your current alignment. Try changing from Datum Reference Frame to Use Current Alignment and see if that helps.
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rsegriggy over 14 years ago

I should say, depending on the vectors of your datums. It's done it to me a few times. When creating your Xactmeasure feature, take a look at the trihedron in the graphic display. See if the datum trihedron matches the current alignment.
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Wes Cisco over 14 years ago

Thanks for the replies.

I tried using the current alignment instead of the datum alignment.

I tried every option I could find in the position window advanced tab area.

There is another cylinder I report just before this one to the same B/A/C DRF
and it does not exhibit this quirk.
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rsegriggy over 14 years ago

have you tried deleting and recreating the reporting feature? I've only had this problem when using Datum Alignment and switching to Use Current Alignment fixed it for me every time. (Probably won't work next time)
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Wes Cisco over 14 years ago

Yes, I deleted the Position dimension and recreated. I deleted the entire feature and recreated. Stubborn the demon is.
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rsegriggy over 14 years ago

Maybe change the starting angle of Datum B by 90 degrees? It sure seems like an alignment issue. Maybe turn off fit to datums. Got a print you can share?
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Ironhoe over 14 years ago

Hemlock will ease your pain.
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Wes Cisco over 14 years ago

Maybe change the starting angle of Datum B by 90 degrees? It sure seems like an alignment issue. Maybe turn off fit to datums. Got a print you can share?

Sorry I have not replied sooner. No drawing to share at the moment. I have been diverted to more pressing issues for the time being. I did try turning off the fit to datums. It did not help. Thanks.
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vpt.se over 14 years ago

You're using Datum Alignment. Depending on how your cylinder was created, it can be 90 degrees off from your current alignment. Try changing from Datum Reference Frame to Use Current Alignment and see if that helps.

This would be my suggestion as well. Didn't seem to work though?

EDIT: Found this in the readme.txt for 2010 MR1:

263192 - Strange results when using xact TP.
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Wes Cisco over 14 years ago

Given the vast wealth of replies for the threads I have started about my inadequacies with Xactmeasure it seems apparent that even though this "product" has been "out" for a few years it is still not widely used. I wonder why.
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