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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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  • Just curious as to why there would be two different ways to define that an FCF is diametric? There is the diametric symbol AND there is WHERE you attach the FCF? Why the redundancy? Just curious more than anything and since I realize you didn't actually write the spec I don't expect you to have all the answers here. Still, it doesn't make sense to have redundancy like that because it will inevitably lead to ambiguity and conflict.

    If your FCF is attached to a FOS and it is an axis then the FCF has to have the diameter symbol in it, you can not legally drop it. That is why I edited my drawing, it did not have it making it an incomplete callout. If your FCF is attached to anything that is not controling the axis all around or is controlling something other than an axis such as a plane you must omit the diameter symbol.

    Same would go for perpendicularity. It you tack it on a diameter it has to have the diameter symbol. If it is on a plane then you omit it.
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  • Just curious as to why there would be two different ways to define that an FCF is diametric? There is the diametric symbol AND there is WHERE you attach the FCF? Why the redundancy? Just curious more than anything and since I realize you didn't actually write the spec I don't expect you to have all the answers here. Still, it doesn't make sense to have redundancy like that because it will inevitably lead to ambiguity and conflict.

    If your FCF is attached to a FOS and it is an axis then the FCF has to have the diameter symbol in it, you can not legally drop it. That is why I edited my drawing, it did not have it making it an incomplete callout. If your FCF is attached to anything that is not controling the axis all around or is controlling something other than an axis such as a plane you must omit the diameter symbol.

    Same would go for perpendicularity. It you tack it on a diameter it has to have the diameter symbol. If it is on a plane then you omit it.
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