[To...] Posted February 26 Share Posted February 26 (edited) Attached is picture of how to interpret 2 inline datum features in ASME. Does ISO or DIN interpret this in the same manner? I assume a stepped cylinder set to Outer Tangential would do the trick. Edited February 26 Link to comment https://qualityforum.zeiss.com/topic/25965-asme-vs-iso/ Share on other sites More sharing options...
[Ma...] Posted February 26 Share Posted February 26 I think new GD&T will do as picture shows. At least on Inspect i was looking at ISO for ABC and it was doing tangential plane - only way i found that was when i applied deviations on surface while ISO and Geometry it was showing 0.063mm flatness because of one sprayed hill on that A plane. So i assume you will be the safest if you use new GD&T and then compare it with you approach with alignment then datums to obtain same value. Link to comment https://qualityforum.zeiss.com/topic/25965-asme-vs-iso/#findComment-146855 Share on other sites More sharing options...
[To...] Posted February 26 Author Share Posted February 26 (edited) Please sign in to view this quote. I am working on a drawing from Germany and don't want to make any assumptions. Plus, I am using 2019 so new GD&T is not an option. I just want to know how other standards interpret Edited February 26 Link to comment https://qualityforum.zeiss.com/topic/25965-asme-vs-iso/#findComment-146859 Share on other sites More sharing options...
[Ma...] Posted February 26 Share Posted February 26 On 2019 i would use stepped cylinder with gauss settings. I hope someone will pop up here soon i have to find info about datums. Link to comment https://qualityforum.zeiss.com/topic/25965-asme-vs-iso/#findComment-146865 Share on other sites More sharing options...
[To...] Posted February 26 Author Share Posted February 26 Why gauss? I would outer tangential in ASME. 1 Link to comment https://qualityforum.zeiss.com/topic/25965-asme-vs-iso/#findComment-146871 Share on other sites More sharing options...
[Ma...] Posted February 26 Share Posted February 26 OK so far as i found you will use tangential element - exception is usage of gauss for MMB. So i would use that stepped cylinder with OT evaluation - don't forget filtering and so on 🙂 1 Link to comment https://qualityforum.zeiss.com/topic/25965-asme-vs-iso/#findComment-146873 Share on other sites More sharing options...
[Je...] Posted February 27 Share Posted February 27 Yup, stepped cylinder with ot (mce) is right for datum in ISO in this case 1 1 1 Link to comment https://qualityforum.zeiss.com/topic/25965-asme-vs-iso/#findComment-146903 Share on other sites More sharing options...
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