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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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  • Basically, what is called out really appears to be a target point in the center of a cylinder, which is perp. to the datum-A- surface. There is a ring that is cut in the same cylinder, basically at the same [basic] height as the target point. I think they want this so called target point of the cylinder to be within an area, so the mating part will fit. Very strange indeed I know. Usually I don't see things of this nature on a drawing. I called and left a message to speak to someone at our customers facility, to go over what their really looking for. I suspect it is in error on their part, as the sketch was produced fairly quickly, with no sign offs of approval by someone else that had examined the sketch to insure it was correct. To me, I would think the drawing should have the basic tolerancing in 2 axis, with the 3rd axis toleranced as ±. But I am not a rocket scientist on GD&T.
    I really just wanted to find out if it was possible to actual measure TP in 3 axis. As, I see it can be done in RFS using the legacy dimensions. Thanks again for all the help and comments. I appreciate it.
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  • Basically, what is called out really appears to be a target point in the center of a cylinder, which is perp. to the datum-A- surface. There is a ring that is cut in the same cylinder, basically at the same [basic] height as the target point. I think they want this so called target point of the cylinder to be within an area, so the mating part will fit. Very strange indeed I know. Usually I don't see things of this nature on a drawing. I called and left a message to speak to someone at our customers facility, to go over what their really looking for. I suspect it is in error on their part, as the sketch was produced fairly quickly, with no sign offs of approval by someone else that had examined the sketch to insure it was correct. To me, I would think the drawing should have the basic tolerancing in 2 axis, with the 3rd axis toleranced as ±. But I am not a rocket scientist on GD&T.
    I really just wanted to find out if it was possible to actual measure TP in 3 axis. As, I see it can be done in RFS using the legacy dimensions. Thanks again for all the help and comments. I appreciate it.
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