[AG...] Posted January 15, 2025 Share Posted January 15, 2025 I have a program that is using a Torus for a Diameter and Roundness. We are able to get the size in tolerance but the Roundness doesn't move. The Torus is from selecting from 3D Model. I have probed a Circle on same feature and the Diameter is repeating and the Roundness is in tolerance now. Just curious on Torus compared to Circle with Roundness, i am missing something here? Link to comment https://qualityforum.zeiss.com/topic/22112-torus-vs-diameter/ Share on other sites More sharing options...
[DW...] Posted January 15, 2025 Share Posted January 15, 2025 Please sign in to view this quote. A circle is a 2d feature and a torus is a 3d feature. The 2d feature roundness should and will repeat better because its just a radial distance around a center point. Roundness of a torus is how consistently the minor diameter is maintained around the major diameter in 3d. Do you have to use the torus for roundness and diameter or will a circle measurement give you the same functionality? Link to comment https://qualityforum.zeiss.com/topic/22112-torus-vs-diameter/#findComment-124396 Share on other sites More sharing options...
[AG...] Posted January 15, 2025 Author Share Posted January 15, 2025 The program that i am using is a 3D model and it is using torus when selected. I probed points along the OD and my results as shown here OD Bottom/Roundness is very different. The OD at top of page (characteristic) is using a Torus and the OD at bottom of page is probing to make a diameter. No matter how much filtering the Torus roundness will not budge from what is shown. I am happy with probing it i feel more confident about my numbers and repeatability. I am just curious of the difference. Doesn't the Torus have to scan all around? This Torus is only probing the outside for the OD. Link to comment https://qualityforum.zeiss.com/topic/22112-torus-vs-diameter/#findComment-124400 Share on other sites More sharing options...
[DW...] Posted January 15, 2025 Share Posted January 15, 2025 (edited) Please sign in to view this quote. Just spit balling here, what does the torus look like in a surface profile characteristic, with no datum? Edited January 15, 2025 Link to comment https://qualityforum.zeiss.com/topic/22112-torus-vs-diameter/#findComment-124402 Share on other sites More sharing options...
[Ke...] Posted January 15, 2025 Share Posted January 15, 2025 Have you tried recalling the Torus OD feature points into a Circle, and the evaluating the Roundness that way? Also: what does the Roundness look like, when charted? Link to comment https://qualityforum.zeiss.com/topic/22112-torus-vs-diameter/#findComment-124404 Share on other sites More sharing options...
[AG...] Posted January 15, 2025 Author Share Posted January 15, 2025 Please sign in to view this quote. I will try the surface profile and get back with you. Link to comment https://qualityforum.zeiss.com/topic/22112-torus-vs-diameter/#findComment-124406 Share on other sites More sharing options...
[AG...] Posted January 15, 2025 Author Share Posted January 15, 2025 Please sign in to view this quote. Actually it is not being recalled to points. It is just being used as Torus. I will try this also. Link to comment https://qualityforum.zeiss.com/topic/22112-torus-vs-diameter/#findComment-124408 Share on other sites More sharing options...
[AG...] Posted January 24, 2025 Author Share Posted January 24, 2025 Thank you for the response. I found what was giving me fits, i changed the probe out and used a larger ruby and it fixed the problem. Link to comment https://qualityforum.zeiss.com/topic/22112-torus-vs-diameter/#findComment-125008 Share on other sites More sharing options...
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