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Constructed Feature Nominals Changing

Benedictj1
Some of you have posted about Angle nominal's changing. Are any of you seeing any other constructed feature nominal's change? BTW - the "+0" does not work for me unless I put the whole formula in parenthesis. Nominal looks like this (.6875+0), if I do not use parenthesis it will still change. This is for a constructed intersection point created from two lines within a "V" shaped groove scan dimensioned in 2D to the origin.
  • If a bestfitted alignment is using these features, make sure the "iterate and re-pierce CAD" is turned off in the alignment.
  • If a best fitted alignment is using these features, make sure the "iterate and re-pierce CAD" is turned off in the alignment.

    Basic, 3-2-1, no best fit. v shaped linear open scan. Constructed lines from the scn to measure the angle and the location of the center of the v shape. 

    SCN1       =FEAT/SCAN,LINEAROPEN,NUMBER OF HITS=965,SHOW HITS=NO,SHOWALLPARAMS=YES
            EXEC MODE=DEFINED, NOMS MODE=FIND NOMS,CLEARPLANE=NO,SINGLE POINT=NO,THICKNESS=0
            FINDNOMS=0.025,SELECTEDONLY=NO,USEBESTFIT=NO,PROBECOMP=YES,AVOIDANCE MOVE=NO,DISTANCE=0,CAD Compensation=YES,4-axis scan=NO
            DIR1=NULLFILTER,
            HITTYPE=VECTOR
            INITVEC=0.6915131,-0.7171283,0.0868138
            DIRVEC=0.723333,0.6904994,0
            CUTVEC=0.000238,0.1204063,0.9927247
            ENDVEC=-0.6914835,-0.7171168,0.087144
            PLANEVEC=-0.7223923,0.6864734,-0.0830883
            POINT1=0.5296,-0.2941,-0.075
            POINT2=4.7286,-0.3024,-0.075
            MEAS/SCAN
              BASICSCAN/LINE,NUMBER OF HITS=965,SHOW HITS=NO,SHOWALLPARAMS=YES
              <0.5296,-0.2941,-0.075>,<4.7286,-0.3024,-0.075>,CutVec=0.000238,0.1204063,0.9927247,DirVec=0.722364,0.6864614,-0.0834332
              InitVec=0.6915131,-0.7171029,0.0870239,EndVec=-0.6915131,-0.7170906,0.0871247,THICKNESS=0
              FILTER/NULLFILTER,
              EXEC MODE=DEFINED
              BOUNDARY/PLANE,<4.7286,-0.3024,-0.075>,PlaneVec=-0.7223922,0.6864734,-0.0830883,Crossings=1
              HITTYPE/VECTOR
              NOMS MODE=FINDNOMS,0.025
              ENDSCAN
            ENDMEAS/
            WORKPLANE/ZPLUS
LIN2       =FEAT/LINE,CARTESIAN,UNBOUNDED,NO
            THEO/<0.6351,-0.3128,-0.0748>,<0.7248816,0.6888735,0>
            ACTL/<0.637,-0.3148,-0.0746>,<0.7285994,0.68494,0>
            CONSTR/LINE,BF,2D,SCN1.HIT[25..25],SCN1.HIT[26..26],SCN1.HIT[27..27],SCN1.HIT[28..28],SCN1.HIT[29..29],SCN1.HIT[30..30],SCN1.HIT[31..31],SCN1.HIT[32..32],SCN1.HIT[33..33],SCN1.HIT[34..34],,
            OUTLIER_REMOVAL/OFF,3
            FILTER/OFF,WAVELENGTH=0
LIN3       =FEAT/LINE,CARTESIAN,UNBOUNDED,NO
            THEO/<0.7397,-0.3126,-0.0751>,<-0.7248481,0.6889087,0>
            ACTL/<0.742,-0.3103,-0.0754>,<-0.7271733,0.6864539,0>
            CONSTR/LINE,BF,2D,SCN1.HIT[47..47],SCN1.HIT[46..46],SCN1.HIT[45..45],SCN1.HIT[44..44],SCN1.HIT[43..43],SCN1.HIT[42..42],SCN1.HIT[41..41],SCN1.HIT[40..40],SCN1.HIT[39..39],SCN1.HIT[38..38],SCN1.HIT[37..37],,
            OUTLIER_REMOVAL/OFF,3
            FILTER/OFF,WAVELENGTH=0
PNT13      =FEAT/POINT,CARTESIAN,NO
            THEO/<0.6875,-0.263,-0.075>,<0.7248816,0.6888735,0>
            ACTL/<0.692,-0.2631,-0.075>,<0.7285994,0.68494,0>
            CONSTR/POINT,INT,LIN2,LIN3​






  • There is CAD, suppressed for sharing. Scan has some noise so you can see odd hits not on the v shape. very small feature, very small probe.


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