true position

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  • true position

    good morning all,

    has anybody run across this... I am running ver3.7 mr2 I have 2 cyl. that I have used for my alignment, rotated my y axis to them and xy zero on one of them. When I ask for the true position of the cyl. that is not zero it gives me an x deviation of 0 (which I would expect) and a y deviation of .0006. What I am finding odd is the true position is showing up as .0013?
    when I get out the ole' calculater and do the formula long hand using 0 and .0006 I get .0012 but I am thinking if the deviation is in 1 axis only I should be getting .0006? It seems there is no toggle for a deviation in 1 axis only?
    I guess I could use distance but the print asked for tp so that is what I wanted to show.
    Any suggestions


  • #2
    Your true position is still .0012,even if your axis deviation is only one direction.


    • #3
      It's a rounding issue, you are anly reporting 4 decimal places but the software carries it out farther then that. The 0.0006 could be 0.00064 and after the TP math it could be as much as 0.0018.
      James Temmen

      There is no job so simple that it can't be done wrong.


      • #4
        Aguayo is correct. You need to envision a circular tolerance zone around your part. Not a linear or cartesian tolerance. Look in ANSI Y14.5 for visual depictions of this.

        When in doubt, post code. A second set of eyes might see something you missed.


        • #5
          I don't know what the heck I was thinking! As sson as I picked up the explanation in my book it was like a ton of bricks! I guess I need a few more days off. Thanks guys


          • #6
            You were think'in just fine, you just forgot the 2x part of the calculation.

            Good job, sometimes we think so fast we get ahead of ourselves

            sigpicHave a homebrew


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