Projection Planes

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  • Projection Planes

    I've been using PC-DMIS for 20 years or so, but I've never learned what Projection Planes are. Obviously they are some sort of Workplane, but beyond that I have no idea. Can someone give me the Cliff Notes version of what they are and for what they are used? Thanks and blessings!
    Thanks a million!

    Tim

  • #2
    From the help file.
    The Projection Planes list contains a list of any plane features you have created in your measurement routine. By default PC-DMIS projects each measured line and circle into your current workplane, so the default item on this list shows Workplane. However, you can select a different plane from this list. PC-DMIS will then project each measured line and circle into the newly selected plane.
    So if you are measuring a 2D feature that is parallel to your alignment, just use the standard workplane method. If you have holes that are on an angled surface, you can measure that surface and use it as the projection plane. When the circle or line is measured, it will create it with the code to use the plane feature instead of a workplane.

    Code:
    [B][COLOR=#c0392b]PLN2[/COLOR][/B] =FEAT/PLANE,CARTESIAN,OUTLINE
    THEO/<0.0007,-20.6757,2.6792>,<0,-0.9902681,-0.1391731>
    ACTL/<0.0007,-20.6757,2.6792>,<0,-0.9902681,-0.1391731>
    MEAS/PLANE,3
    HIT/BASIC,NORMAL,<0.7282,-20.7478,3.1923>,<0,-0.9902681,-0.1391731>,<0.7282,-20.7478,3.1923>,USE THEO=YES
    HIT/BASIC,NORMAL,<-0.6977,-20.735,3.1013>,<0,-0.9902681,-0.1391731>,<-0.6977,-20.735,3.1013>,USE THEO=YES
    HIT/BASIC,NORMAL,<-0.0285,-20.5443,1.744>,<0,-0.9902681,-0.1391731>,<-0.0285,-20.5443,1.744>,USE THEO=YES
    ENDMEAS/
    CIR16 =FEAT/CIRCLE,CARTESIAN,IN,LEAST_SQR
    THEO/<0,-20.4845,2.392>,<0,-0.9902681,-0.1391731>,0.5309
    ACTL/<0,-20.4845,2.392>,<0,-0.9902681,-0.1391731>,0.5309
    MEAS/CIRCLE,4,FEATURE=[COLOR=#c0392b][B]PLN2[/B][/COLOR]
    HIT/BASIC,NORMAL,<0.2282,-20.4656,2.2577>,<-0.8596041,-0.071112,0.505988>,<0.2282,-20.4656,2.2577>,USE THEO=YES
    HIT/BASIC,NORMAL,<0.0982,-20.4502,2.1478>,<-0.3700949,-0.129291,0.9199531>,<0.0982,-20.4502,2.1478>,USE THEO=YES
    HIT/BASIC,NORMAL,<-0.0724,-20.449,2.1391>,<0.2727711,-0.1338955,0.9527161>,<-0.0724,-20.449,2.1391>,USE THEO=YES
    HIT/BASIC,NORMAL,<-0.2131,-20.4625,2.2352>,<0.8026085,-0.0830176,0.590701>,<-0.2131,-20.4625,2.2352>,USE THEO=YES
    ENDMEAS/
    PC-DMIS 2016.0 SP8

    Jeff

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    • #3
      Thanks! I couldn’t find it in the help menu. Additional thanks for the great description.
      Blessings!
      Tim
      Thanks a million!

      Tim

      Comment

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