[Cl...] Posted January 3, 2024 Share Posted January 3, 2024 Programming off-line. Why do my actual and nominal not match? Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/ Share on other sites More sharing options...
[Ja...] Posted January 3, 2024 Share Posted January 3, 2024 One reason could be that the nominal diameter has been modified manually but the CAD model's diameter is what the actual result shows. Regardless, the actual result will always show the CAD model dimension if that feature is linked to CAD model. Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25918 Share on other sites More sharing options...
[Cl...] Posted January 4, 2024 Author Share Posted January 4, 2024 First time I've ever seen this. Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25920 Share on other sites More sharing options...
[Ri...] Posted January 4, 2024 Share Posted January 4, 2024 Please sign in to view this quote. What do you mean "Linked to a CAD model"? I have never seen this happen before either. Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25922 Share on other sites More sharing options...
[Ni...] Posted January 5, 2024 Share Posted January 5, 2024 Go to Extra > Settings > Measurement > Nominal The roundoff measure might be set to .010. Change it to the lowest number and try again. Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25924 Share on other sites More sharing options...
[To...] Posted January 5, 2024 Share Posted January 5, 2024 Please sign in to view this quote. Would that make the nominal value .360? When extracting features from CAD model, the rounding settings do not apply. Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25926 Share on other sites More sharing options...
[Ja...] Posted January 5, 2024 Share Posted January 5, 2024 Please sign in to view this quote. Features extracted from CAD model are linked to it. So whenever you select a feature, it gets highlighted on the model. After extraction, you can change the nominals manually and the feature will still stay linked to the model. So the actual readings you get after simulation run will reflect the original CAD dimensions and not the modified nominal. Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25928 Share on other sites More sharing options...
[Cl...] Posted January 5, 2024 Author Share Posted January 5, 2024 Please sign in to view this quote. Its set to 0.00010 Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25930 Share on other sites More sharing options...
[No...] Posted January 8, 2024 Share Posted January 8, 2024 Is dispersion off? Only to make sure... Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25932 Share on other sites More sharing options...
[Cl...] Posted January 8, 2024 Author Share Posted January 8, 2024 What is "dispersion" and where do I find it? Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25934 Share on other sites More sharing options...
[To...] Posted January 8, 2024 Share Posted January 8, 2024 Please sign in to view this quote. Dispersion adds user controlled deviation data. You can find it in Extras > Settings > Measurement > Simulation However, if dispersion was active, you'd see random data in the actuals of X, Y, Z, not just the diameter. Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25936 Share on other sites More sharing options...
[Ri...] Posted January 8, 2024 Share Posted January 8, 2024 Please sign in to view this quote. I can change the nominal of a selected CAD feature (Circle for this example), change the nominal to any value and it will report that value regardless of what the model initially configured. I can do this on a system with or without planner (Live system in simulation mode). It's been this way for over a decade. This is why I asked what is meant by "Linked". Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25938 Share on other sites More sharing options...
[Cl...] Posted January 8, 2024 Author Share Posted January 8, 2024 Please sign in to view this quote. Found it and turned it off. That did the trick. Thanks! BTW, this is a new problem and I'm the only one with access to my planner seat. So I have no idea how that got turned on? Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25940 Share on other sites More sharing options...
[To...] Posted January 8, 2024 Share Posted January 8, 2024 Please sign in to view this quote. I'm still baffled that only the diameter was affected by the dispersion being on. In your original post, the X, Y and Z actual values remained unchanged, there's 0.00000 form error and deviation. Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25942 Share on other sites More sharing options...
[No...] Posted January 9, 2024 Share Posted January 9, 2024 Please sign in to view this quote. In theory, if the values entered for dispersion are low enough such a result is possible. The deviations calculated would then be smaller than the decimal places displayed. But I agree, this is highly unlikely. Link to comment https://qualityforum.zeiss.com/topic/6526-actual-vs-nominal/#findComment-25944 Share on other sites More sharing options...
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