[An...] Posted May 17, 2022 Share Posted May 17, 2022 Hello, I got the customer's requirement for Multi-Probe Performance(all tests shall then be charted) How do i know "The (X,Y,Z) total range of measurement results (max-min)". I know only the data that is calibrated via "Qualify stylus" please see attached. Thank you in advance .0517.JPG0517-2.JPG0517-3.JPG Link to comment https://qualityforum.zeiss.com/topic/10368-multi-probe-performance/ Share on other sites More sharing options...
[Ke...] Posted May 17, 2022 Share Posted May 17, 2022 I have never needed to perform a study like this, but I found a short paper that discusses it. https://www.euspen.eu/knowledge-base/LAM19121.pdf Link to comment https://qualityforum.zeiss.com/topic/10368-multi-probe-performance/#findComment-49714 Share on other sites More sharing options...
[An...] Posted May 17, 2022 Author Share Posted May 17, 2022 Please sign in to view this quote. It is more complicated!! Link to comment https://qualityforum.zeiss.com/topic/10368-multi-probe-performance/#findComment-49716 Share on other sites More sharing options...
[Er...] Posted May 18, 2022 Share Posted May 18, 2022 Can you share the specific customer requirements? Do they have a form with instructions? Just guessing from your post... I would not use the probe qualification data. That only tells me each stylus compared to the master probe. I would measure the reference sphere with the macro strategy. Using probe one as the reference, report the max-min deviation for the other probes in each axis. I guess for charts, plot the stylii X, Y, and Z. Naturally probe one will be all zeros. Link to comment https://qualityforum.zeiss.com/topic/10368-multi-probe-performance/#findComment-49718 Share on other sites More sharing options...
[An...] Posted May 18, 2022 Author Share Posted May 18, 2022 Please sign in to view this quote. how do you measure the reference sphere and what is the macro strategy? Link to comment https://qualityforum.zeiss.com/topic/10368-multi-probe-performance/#findComment-49720 Share on other sites More sharing options...
[Er...] Posted May 18, 2022 Share Posted May 18, 2022 Honestly, I'd ask the customer for more information and forms. Write a program to measure the reference sphere. Use probe one for the base alignment so the other probes compare to probe one. One of the options for measurement strategy for spheres is sphere macro. It takes points at equal spaces on the sphere. Link to comment https://qualityforum.zeiss.com/topic/10368-multi-probe-performance/#findComment-49722 Share on other sites More sharing options...
[Er...] Posted May 18, 2022 Share Posted May 18, 2022 This is an interesting concept, one I haven't heard or experienced. But why just a star probe? Wouldn't it make sense you would perform said study for all stylii measuring their part(s). Link to comment https://qualityforum.zeiss.com/topic/10368-multi-probe-performance/#findComment-49724 Share on other sites More sharing options...
[Ke...] Posted May 18, 2022 Share Posted May 18, 2022 Please sign in to view this quote. One could definitely go pretty far down the rabbit hole with this type of study. It could also make sense to say that the study should also take into account for all styli orientations. Perhaps, a reperesentative sample is sufficient for the customer. I found a couple of papers on this study; but, only posted a link to one of them. The other paper was from 1998, and focused on touch trigger probes; at the time touch trigger probes "accounted for 90% of the probes in service" Link to comment https://qualityforum.zeiss.com/topic/10368-multi-probe-performance/#findComment-49726 Share on other sites More sharing options...
[An...] Posted May 18, 2022 Author Share Posted May 18, 2022 Please sign in to view this quote. That is my question too to Customer. I dont think they have CMM knowledge. Link to comment https://qualityforum.zeiss.com/topic/10368-multi-probe-performance/#findComment-49728 Share on other sites More sharing options...
[Er...] Posted May 19, 2022 Share Posted May 19, 2022 Please sign in to view this quote. From the paper in the previous post a star probe seemed a way to standardise for comparison purposes between CMMs. Link to comment https://qualityforum.zeiss.com/topic/10368-multi-probe-performance/#findComment-49730 Share on other sites More sharing options...
[An...] Posted May 19, 2022 Author Share Posted May 19, 2022 I need to talk with customer. Thank you all Link to comment https://qualityforum.zeiss.com/topic/10368-multi-probe-performance/#findComment-49732 Share on other sites More sharing options...
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