[Mi...] Posted June 25, 2020 Share Posted June 25, 2020 Back on the old forum, I'd seen a presentation on how to properly compute distance between two parallel planes in accordance with ASME's "envelope rule" - it involved checking both distances and parallelisms, max and min points, and a few formulas. Does anyone have a copy to share? Link to comment https://qualityforum.zeiss.com/topic/15372-parallel-planes-and-the-envelope-rule/ Share on other sites More sharing options...
[Ri...] Posted June 25, 2020 Share Posted June 25, 2020 Would the Symmetry Plane feature not do this for you if you put it on Outer Tangential? Link to comment https://qualityforum.zeiss.com/topic/15372-parallel-planes-and-the-envelope-rule/#findComment-82820 Share on other sites More sharing options...
[Th...] Posted June 25, 2020 Share Posted June 25, 2020 I think this is the one you're asking about? It's been posted on this forum as well, but I can't find where.LNL Distance.pdf Link to comment https://qualityforum.zeiss.com/topic/15372-parallel-planes-and-the-envelope-rule/#findComment-82822 Share on other sites More sharing options...
[Mi...] Posted June 25, 2020 Author Share Posted June 25, 2020 Please sign in to view this quote. The envelope rule specifies that both the widest opposed points and the narrowest opposed points must be in spec. A pair of OTE planes just checks the maximum of each plane, and doesn't care if they are exactly opposed or not. Please sign in to view this quote. That's it, thanks! Link to comment https://qualityforum.zeiss.com/topic/15372-parallel-planes-and-the-envelope-rule/#findComment-82824 Share on other sites More sharing options...
[Ri...] Posted June 25, 2020 Share Posted June 25, 2020 Please sign in to view this quote. I'm talking about the special feature Symmetry Plane. It is treated as a single features, so I believe it would cover exactly what you are talking about. Just like the Stepped Cylinder. Link to comment https://qualityforum.zeiss.com/topic/15372-parallel-planes-and-the-envelope-rule/#findComment-82826 Share on other sites More sharing options...
[Mi...] Posted June 26, 2020 Author Share Posted June 26, 2020 Please sign in to view this quote. Hmm... I'll have to look into this. Thanks. Link to comment https://qualityforum.zeiss.com/topic/15372-parallel-planes-and-the-envelope-rule/#findComment-82828 Share on other sites More sharing options...
[Me...] Posted June 26, 2020 Share Posted June 26, 2020 The "Symmetry Plane" feature set to outer tangential will only allow you to verify the MMC size. If you're after a two-point check to verify that the LMC limit has not been violated, you'll have to do it the long way. Link to comment https://qualityforum.zeiss.com/topic/15372-parallel-planes-and-the-envelope-rule/#findComment-82830 Share on other sites More sharing options...
[Aa...] Posted June 26, 2020 Share Posted June 26, 2020 Please sign in to view this quote. (a) is what OTE on a Symmetry Plane checks (not the same thing as the distance between two OTE planes). Link to comment https://qualityforum.zeiss.com/topic/15372-parallel-planes-and-the-envelope-rule/#findComment-82832 Share on other sites More sharing options...
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