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Angle Results from 2 Auto Lines

TESA/PC-DMIS CAD 4.2 MR1 RELEASE

Using Auto Line for 2 separate edges (2 points selected for length and location of line), Test button each time, Create button each time. Back light is set to 50.6. Close button.

Select Angle Dimension, Last Two button, tol. +4/-4, nominal = 90 deg., Create button.

10 results (in degrees):

87.4, 92.6, 92.7, 92.7, 87.5, 92.6, 92.8, 87.3, 87.4, 92.7

*note: I never moved the part. I just repated the process listed above. The results were gathered within 3-5 minutes total.

No pattern seen. This is the results for the same part, which was never moved.

The angles seem to be complimentary angles because you get relatively close to 180 degrees when you add a low number and a high number or when you add the averages of the lows and the highs.

What may be going on here?
Which results might I record for my D.O.E.?
Would you take all of the small angles or all of the large anlges for your results?

Help.

Parents
  • Lin19 =feat/vision/line,cartesian
    theo/<2.1479,-2.951,-7.5863>,<-0.6947,0.7193,0>,<0.7193085,0.6946908,0>,<0,0,1>,0.0446
    actl/<2.1473,-2.9504,-7.5863>,<-0.6951,0.7189,0>,<0.7188963,0.6951173,0>,<0,0,1>,0.0438
    targ/<2.1479,-2.951,-7.5863>,<-0.6947,0.7193,0>,<0.7193085,0.6946908,0>,<0,0,1>
    unbounded
    show advanced measurement options=no
    show_vision_parameters=yes
    type=automatic hit target
    magnification=1.2
    hit target color=red,nominal color=green
    hit target=ea1,0.0056,normal
    edge=dominant edge
    filter=yes,2,no
    focus=no
    illumination/top light [off] : Bottom light [on:56%] : Ring light [off]
    lin20 =feat/vision/line,cartesian
    theo/<2.1495,-3.0265,-7.5863>,<-0.6923,-0.7216,0>,<-0.7216082,0.6923017,0>,<0,0,1>,0.0467
    actl/<2.1491,-3.0269,-7.5863>,<-0.6874,-0.7263,0>,<-0.7263159,0.6873611,0>,<0,0,1>,0.0455
    targ/<2.1495,-3.0265,-7.5863>,<-0.6923,-0.7216,0>,<-0.7216082,0.6923017,0>,<0,0,1>
    unbounded
    show advanced measurement options=no
    show_vision_parameters=yes
    type=automatic hit target
    magnification=1.2
    hit target color=red,nominal color=green
    hit target=ea1,0.0058,normal
    edge=dominant edge
    filter=yes,2,no
    focus=no
    illumination/top light [off] : Bottom light [on:56%] : Ring light [off]
    dim angl10= 2d angle from line lin19 to line lin20 ,$
    graph=off text=off mult=10.00 output=both
    ax nominal +tol -tol meas dev outtol
    a 90.0000 4.0000 4.0000 87.4581 -2.5419 0.0000 -#------
    diminfo/angl10;icon,dimid,featid,vert,horiz, ,$
    headings,graph ax
Reply
  • Lin19 =feat/vision/line,cartesian
    theo/<2.1479,-2.951,-7.5863>,<-0.6947,0.7193,0>,<0.7193085,0.6946908,0>,<0,0,1>,0.0446
    actl/<2.1473,-2.9504,-7.5863>,<-0.6951,0.7189,0>,<0.7188963,0.6951173,0>,<0,0,1>,0.0438
    targ/<2.1479,-2.951,-7.5863>,<-0.6947,0.7193,0>,<0.7193085,0.6946908,0>,<0,0,1>
    unbounded
    show advanced measurement options=no
    show_vision_parameters=yes
    type=automatic hit target
    magnification=1.2
    hit target color=red,nominal color=green
    hit target=ea1,0.0056,normal
    edge=dominant edge
    filter=yes,2,no
    focus=no
    illumination/top light [off] : Bottom light [on:56%] : Ring light [off]
    lin20 =feat/vision/line,cartesian
    theo/<2.1495,-3.0265,-7.5863>,<-0.6923,-0.7216,0>,<-0.7216082,0.6923017,0>,<0,0,1>,0.0467
    actl/<2.1491,-3.0269,-7.5863>,<-0.6874,-0.7263,0>,<-0.7263159,0.6873611,0>,<0,0,1>,0.0455
    targ/<2.1495,-3.0265,-7.5863>,<-0.6923,-0.7216,0>,<-0.7216082,0.6923017,0>,<0,0,1>
    unbounded
    show advanced measurement options=no
    show_vision_parameters=yes
    type=automatic hit target
    magnification=1.2
    hit target color=red,nominal color=green
    hit target=ea1,0.0058,normal
    edge=dominant edge
    filter=yes,2,no
    focus=no
    illumination/top light [off] : Bottom light [on:56%] : Ring light [off]
    dim angl10= 2d angle from line lin19 to line lin20 ,$
    graph=off text=off mult=10.00 output=both
    ax nominal +tol -tol meas dev outtol
    a 90.0000 4.0000 4.0000 87.4581 -2.5419 0.0000 -#------
    diminfo/angl10;icon,dimid,featid,vert,horiz, ,$
    headings,graph ax
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