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  • If then

    I have a tabulated dwg, 15 sections which encompass a diameter (D) +/-.003 and a location (Y) +/- .005. Measuring 4 flutes with varying taper. I have created cones at each section, intersected a circle/cone diameter.



    AAD =FEAT/CIRCLE,CARTESIAN,OUT,NO
    THEO/<0,0.6566,0>,<0,-1,0>,1.158
    ACTL/<0,0.6566,0>,<0,-1,0>,1.158
    CONSTR/CIRCLE,CONE,CON_AA,DIAMETER,1.158
    BBD =FEAT/CIRCLE,CARTESIAN,OUT,NO
    THEO/<0,1.6517,0>,<0,-1,0>,0.923
    ACTL/<0,1.6517,0>,<0,-1,0>,0.923
    CONSTR/CIRCLE,CONE,CON_BB,DIAMETER,0.923
    CCD =FEAT/CIRCLE,CARTESIAN,OUT,NO
    THEO/<0,2.663,0>,<0,-1,0>,0.844
    ACTL/<0,2.663,0>,<0,-1,0>,0.844
    CONSTR/CIRCLE,CONE,CON_CC,DIAMETER,0.844
    DDD =FEAT/CIRCLE,CARTESIAN,OUT,NO
    THEO/<0,3.6493,0>,<0,1,0>,0.853
    ACTL/<0,3.6491,0>,<0,1,0>,0.853
    CONSTR/CIRCLE,CONE,CON_DD,DIAMETER,0.853
    EED =FEAT/CIRCLE,CARTESIAN,OUT,NO
    THEO/<0,4.643,0>,<0,1,0>,0.902
    ACTL/<0,4.6433,0>,<0,1,0>,0.902
    CONSTR/CIRCLE,CONE,CON_EE,DIAMETER,0.902


    I have also created diameters at the nominal Y location

    AAMID1 =FEAT/POINT,CARTESIAN,NO
    THEO/<0.5792,0.653,0>,<0,0,1>
    ACTL/<0.5792,0.653,0>,<0,0,1>
    CONSTR/POINT,MID,AA1,AA2
    AAMID2 =FEAT/POINT,CARTESIAN,NO
    THEO/<0,0.653,-0.5792>,<0,0,1>
    ACTL/<0,0.653,-0.5792>,<0,0,1>
    CONSTR/POINT,MID,AA3,AA4
    AAMID3 =FEAT/POINT,CARTESIAN,NO
    THEO/<0,0.653,0.5792>,<0,0,1>
    ACTL/<0,0.653,0.5792>,<0,0,1>
    CONSTR/POINT,MID,AA5,AA6
    AAMID4 =FEAT/POINT,CARTESIAN,NO
    THEO/<-0.5792,0.653,0>,<0,0,1>
    ACTL/<-0.5792,0.653,0>,<0,0,1>
    CONSTR/POINT,MID,AA7,AA8
    AAMID =FEAT/CIRCLE,CARTESIAN,OUT,LEAST_SQR,NO
    THEO/<0,0.653,0>,<0,1,0>,1.1584
    ACTL/<0,0.653,0>,<0,1,0>,1.1584
    CONSTR/CIRCLE,BF,2D,AAMID1,AAMID2,AAMID3,AAMID4,,
    OUTLIER_REMOVAL/OFF,3
    FILTER/OFF,UPR=0



    Question: How do I get the the "BEST" diameter at a given Y location. I tried IF/THEN but failed miserably. And I am trying to stay away from inputs, if possible

    Can't post dwg, but here is an idea:

    SECTION____ LOCATION Y_____ DIAMETER
    A-A_________ .653____________1.158
    B-B_________1.653____________.923
    C-C_________2.653___________.844

  • #2
    Can you explain what you call "the best" diameter ????
    Sorry if I don't understand (looking at my location could help !)

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    • #3
      Good question... I suppose what I am referring to is, What if one is out of print while the other is in print. Example, one section view cone/circle showed the diameter out of print .0025, but the dia at nominal was in print. I believe this is due to the very minor taper at that view (1.5° over .010 length)

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