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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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  • Why are you saying that one of the three is insignifican't? You yourself posted an example using 3 basics distances and one basic angle. Look at the pic I posted. In the one view there are two dimensions locating the feature, in the other view there is a final dimension locating it as a depth from another feature. If you say one of those is insignificant how do you machine the part with one of them omitted? Remeber basic dimensions define the theoretical perfect location of the tolerance zone. They may not be handy for giving feedback to the machinist or look pretty on a report but if you omitted one of those dims you couldn't make the part.
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  • Why are you saying that one of the three is insignifican't? You yourself posted an example using 3 basics distances and one basic angle. Look at the pic I posted. In the one view there are two dimensions locating the feature, in the other view there is a final dimension locating it as a depth from another feature. If you say one of those is insignificant how do you machine the part with one of them omitted? Remeber basic dimensions define the theoretical perfect location of the tolerance zone. They may not be handy for giving feedback to the machinist or look pretty on a report but if you omitted one of those dims you couldn't make the part.
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