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True Position in 3 axis???

1CMM4ME
Ok, I have read the post regarding this so called argument that my boss and I got into today. He told me that you cannot measure true position in 3 axis, as I told him he was wrong. I know it depends on the way the FCF calls it out, but I tried to explain to him that it is possible to measure TP in 3 axis.
I have seen the formulas, so I know it's possible. I just wish I could get one of you gurus to reply back explaining that it is possible and why. I see the picture but he does not. I do not like to get into pissing matches with upper management, but I have learned a h**ll of alot from you guys, and I know this is possible. So if one of you fine gentleman can back me up on this, I would very much appreciate it. Thank you very much.
Now I am going to get a cold beer.Smiley
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  • I have seen the spherical TP used and a colleague of mine evaluated it as such as well. This is waaaay back and at that time, we were not using PC-DMIS. This is the only one I have seen, haven't seen it since.

    The ASME standard is already occupying the spherical symbol with it's meaning of RFS. ISO however, currently use the S to indicate the spherical TP. The symbol is put before the tolerance, so the FCF looks like [TP|SØ0.5|A|B|C].

    ISO will adopt the symbols from ASME, but when that is going to happen (introduced in the real world) is unknown to me.





    This is ISO - not ASME.

    +1. Most inspectors assume ASME/ANSI requirements, and forget ISO.
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  • I have seen the spherical TP used and a colleague of mine evaluated it as such as well. This is waaaay back and at that time, we were not using PC-DMIS. This is the only one I have seen, haven't seen it since.

    The ASME standard is already occupying the spherical symbol with it's meaning of RFS. ISO however, currently use the S to indicate the spherical TP. The symbol is put before the tolerance, so the FCF looks like [TP|SØ0.5|A|B|C].

    ISO will adopt the symbols from ASME, but when that is going to happen (introduced in the real world) is unknown to me.





    This is ISO - not ASME.

    +1. Most inspectors assume ASME/ANSI requirements, and forget ISO.
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