Legacy dimension - profile of a surface

First of all, I am aware this topic has been covered, but my google-fu failed to find a solution for my current conundrum.

All that follows is relative to PC-DMIS 2012

Part setup:
Datum A: Cylinder along Z, locking X, Y and two rotational DoF
Datum B: Plane perpendicular to A, locking Z
Datum C: Plane perpendicular to B at 5.5 basic from A's axis, locking the last rotational DoF

Callout:
Profile of a surface of datum C relative to datum A

The issue:
While this is pretty straightforward to do with exact dimensions, the report template at my current workplace plays nicely only with legacy dimensions.
The result of legacy profile of a surface (form and position, LSQ best fit) while aligned to ABC are different (worse) than exact above.
To my understanding this is to be expected as legacy "form and location" fits to the current alignment, which is restricting 6 DoF instead of just 4 as Datum A alone would.
If this is the case, is there any way to use legacy with the callout that I have?

Parents

MBaroni over 4 years ago

I am not sure what I am missing, but I am getting very different results (same base data as the program sent earlier)

DATC_SET =FEAT/SET,CARTESIAN
THEO/<0,-5.5,-22.5>,<0,0,1>
ACTL/<0.038,-5.534,-22.559>,<0,0,1>
CONSTR/SET,BASIC,DATC_1,DATC_2,DATC_3,DATC_4,DATC_5,DATC_ 6,DATC_7,DATC_8,DATC_9,DATC_10,,
ALN_PROFILE=ALIGNMENT/START,RECALL[emoticon:6D505171FAA4497C85C5CA27290C555D]ATUM_ABC,LIST=YES
ALIGNMENT/LEVEL,ZPLUS,DATUM_A
ALIGNMENT/TRANS,XAXIS,DATUM_A
ALIGNMENT/TRANS,YAXIS,DATUM_A
ALIGNMENT/BF2D,ZMINUS,MIN/MAX,CREATE WEIGHTS=NO,ROTONLY,0,0,0,719.989
ITERATEANDREPIERCECAD=YES,TOLERANCE=20,MAX ITERATIONS=100
Deviation Threshold=0.2
SHOWALLINPUTS=YES,SHOWALLPARAMS=YES
ID=DATC_SET,Feature Sets,,1,YES
DATC_1,Points,,1,YES
DATC_2,Points,,1,YES
DATC_3,Points,,1,YES
DATC_4,Points,,1,YES
DATC_5,Points,,1,YES
DATC_6,Points,,1,YES
DATC_7,Points,,1,YES
DATC_8,Points,,1,YES
DATC_9,Points,,1,YES
DATC_10,Points,,1,YES
ID=
ALIGNMENT/END
DISPLAYPRECISION/5
DIM CTQ_13_PROFILE_DAT_C= PROFILE OF SURFACE OF PLANE DATUM_C FORMANDLOCATION UNITS=MM ,$
GRAPH=OFF TEXT=OFF MULT=10.00 ARROWDENSITY=100 OUTPUT=BOTH
AX NOMINAL MEAS +TOL -TOL DEV OUTTOL MAX MIN
M 0.00000 0.05266 0.05000 0.05000 0.05266 0.00266 0.05266 0.01708 ---|--->
XACT_PROFILE =SURFACE PROFILE : DATUM_C
FEATCTRLFRAME/SHOWPARAMS=YES,SHOWEXPANDED=YES
CADGRAPH=OFF,REPORTGRAPH=OFF,TEXT=OFF,MULT=1.00,AR ROWDENSITY=100,OUTPUT=BOTH,UNITS=MM
COMPOSITE=NO,
CUSTOMIZED DRF=NO
STANDARDTYPE=ASME_Y14_5
PRIMARY DIMENSION/PROFILE OF SURFACE,0.1,<UZ>,<UTol>,A,<dat>,<dat>
NOTE/XACT_PROFILE
FEATURES/DATUM_C,,

Reply

MBaroni over 4 years ago

I am not sure what I am missing, but I am getting very different results (same base data as the program sent earlier)

DATC_SET =FEAT/SET,CARTESIAN
THEO/<0,-5.5,-22.5>,<0,0,1>
ACTL/<0.038,-5.534,-22.559>,<0,0,1>
CONSTR/SET,BASIC,DATC_1,DATC_2,DATC_3,DATC_4,DATC_5,DATC_ 6,DATC_7,DATC_8,DATC_9,DATC_10,,
ALN_PROFILE=ALIGNMENT/START,RECALL[emoticon:6D505171FAA4497C85C5CA27290C555D]ATUM_ABC,LIST=YES
ALIGNMENT/LEVEL,ZPLUS,DATUM_A
ALIGNMENT/TRANS,XAXIS,DATUM_A
ALIGNMENT/TRANS,YAXIS,DATUM_A
ALIGNMENT/BF2D,ZMINUS,MIN/MAX,CREATE WEIGHTS=NO,ROTONLY,0,0,0,719.989
ITERATEANDREPIERCECAD=YES,TOLERANCE=20,MAX ITERATIONS=100
Deviation Threshold=0.2
SHOWALLINPUTS=YES,SHOWALLPARAMS=YES
ID=DATC_SET,Feature Sets,,1,YES
DATC_1,Points,,1,YES
DATC_2,Points,,1,YES
DATC_3,Points,,1,YES
DATC_4,Points,,1,YES
DATC_5,Points,,1,YES
DATC_6,Points,,1,YES
DATC_7,Points,,1,YES
DATC_8,Points,,1,YES
DATC_9,Points,,1,YES
DATC_10,Points,,1,YES
ID=
ALIGNMENT/END
DISPLAYPRECISION/5
DIM CTQ_13_PROFILE_DAT_C= PROFILE OF SURFACE OF PLANE DATUM_C FORMANDLOCATION UNITS=MM ,$
GRAPH=OFF TEXT=OFF MULT=10.00 ARROWDENSITY=100 OUTPUT=BOTH
AX NOMINAL MEAS +TOL -TOL DEV OUTTOL MAX MIN
M 0.00000 0.05266 0.05000 0.05000 0.05266 0.00266 0.05266 0.01708 ---|--->
XACT_PROFILE =SURFACE PROFILE : DATUM_C
FEATCTRLFRAME/SHOWPARAMS=YES,SHOWEXPANDED=YES
CADGRAPH=OFF,REPORTGRAPH=OFF,TEXT=OFF,MULT=1.00,AR ROWDENSITY=100,OUTPUT=BOTH,UNITS=MM
COMPOSITE=NO,
CUSTOMIZED DRF=NO
STANDARDTYPE=ASME_Y14_5
PRIMARY DIMENSION/PROFILE OF SURFACE,0.1,<UZ>,<UTol>,A,<dat>,<dat>
NOTE/XACT_PROFILE
FEATURES/DATUM_C,,

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