[Za...] Posted April 25, 2023 Share Posted April 25, 2023 Hello all, I have a question about the True Position shown on these pictures: Is this drawing correct? The boxes for my three datums inside of the TP characteristic are all greyed out, so I can't select MMB as the blueprint calls for. Any help is appreciated! Link to comment https://qualityforum.zeiss.com/topic/8094-true-position-with-mmc-and-mmb/ Share on other sites More sharing options...
[Ri...] Posted April 25, 2023 Share Posted April 25, 2023 Please sign in to view this quote. Switch over to a Bore Pattern, and use the View Tolerance method. It will allow you use to MMB/LMB. Link to comment https://qualityforum.zeiss.com/topic/8094-true-position-with-mmc-and-mmb/#findComment-35382 Share on other sites More sharing options...
[Za...] Posted April 25, 2023 Author Share Posted April 25, 2023 Please sign in to view this quote. Richard, thank you for the quick response. This isn't a bore pattern, so I'm confused why I would have to use that method to use the MMB. Can you explain what the difference is between the two methods and why one would allow MMB and not the other? Thanks, Zach Link to comment https://qualityforum.zeiss.com/topic/8094-true-position-with-mmc-and-mmb/#findComment-35384 Share on other sites More sharing options...
[Ri...] Posted April 25, 2023 Share Posted April 25, 2023 Please sign in to view this quote. Because unfortunately, at the moment at least (I promise big changes are coming), Calypso doesn't handle Datum Shift very well, and with the Bore Pattern, it forces it in a 2d Position instead of 3d. Link to comment https://qualityforum.zeiss.com/topic/8094-true-position-with-mmc-and-mmb/#findComment-35386 Share on other sites More sharing options...
[Za...] Posted April 25, 2023 Author Share Posted April 25, 2023 Please sign in to view this quote. Excellent, that is exactly what I'm looking for. I will have to give this a try when I get some time in the next few days. Link to comment https://qualityforum.zeiss.com/topic/8094-true-position-with-mmc-and-mmb/#findComment-35388 Share on other sites More sharing options...
[Ri...] Posted April 26, 2023 Share Posted April 26, 2023 Please sign in to view this quote. Isn't that the same as using Circles? Link to comment https://qualityforum.zeiss.com/topic/8094-true-position-with-mmc-and-mmb/#findComment-35390 Share on other sites More sharing options...
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