[Da...] Posted January 20, 2021 Share Posted January 20, 2021 Good Morning all. I have a massive problem with ACCURA (Rotary Table + VAST XXT) Basically it keeps loosing base alignment values. I did change the calibration from one sphere to two, low and tall sphere and it did improve, but only for a short time. Example: I wrote a quick program only from the table. Plane + center circle as a datum. I rotate 4 x times by 45° 180° True position of the circle is 0.1 (see attachments) The problem is random. Is ok straight away after the calibration, but once I run any program the issue is coming back. Do not what to do really.. Zeiss engineers are not help at all.. All settings are ok I think (fitted rotary table etc.) Any ideas ? Have you ever had this issue ?Capture.JPG Link to comment https://qualityforum.zeiss.com/topic/13678-rotary-table-issue/ Share on other sites More sharing options...
[Ke...] Posted January 20, 2021 Share Posted January 20, 2021 Are you qualifying the RT at the start of each program run, or are you qualifying the RT, and then running the program multiple times? I believe the consensus is to qualify the RT at the beginning of each program run. Link to comment https://qualityforum.zeiss.com/topic/13678-rotary-table-issue/#findComment-70266 Share on other sites More sharing options...
[Da...] Posted January 20, 2021 Author Share Posted January 20, 2021 I am running 5 different CMM's and did not notice any different before or not. Do you mean open the RT cal program when the part is on the table or copy RT program inside the CMM program ? Link to comment https://qualityforum.zeiss.com/topic/13678-rotary-table-issue/#findComment-70268 Share on other sites More sharing options...
[Ke...] Posted January 20, 2021 Share Posted January 20, 2021 Importing the RT qualification program within the part program, so that each time a new part is loaded, the RT qualification runs, first. Link to comment https://qualityforum.zeiss.com/topic/13678-rotary-table-issue/#findComment-70270 Share on other sites More sharing options...
[Ch...] Posted January 20, 2021 Share Posted January 20, 2021 Go to Measurement tab > Rotary Table And send us a screen shot of that menu. Link to comment https://qualityforum.zeiss.com/topic/13678-rotary-table-issue/#findComment-70272 Share on other sites More sharing options...
[Ri...] Posted January 20, 2021 Share Posted January 20, 2021 Please sign in to view this quote. This is the absolute best method, but not always necessary. I have had great luck with the two sphere, as well as the cylinder methods. A lot of it also depends on your parts, and fixtures. Link to comment https://qualityforum.zeiss.com/topic/13678-rotary-table-issue/#findComment-70274 Share on other sites More sharing options...
[Da...] Posted January 21, 2021 Author Share Posted January 21, 2021 Please sign in to view this quote. There you go in attachments mate.Capture.JPG Link to comment https://qualityforum.zeiss.com/topic/13678-rotary-table-issue/#findComment-70276 Share on other sites More sharing options...
[Ri...] Posted January 21, 2021 Share Posted January 21, 2021 Which method are you using for your RT qualification? The (1) sphere, (2) sphere, or cylinder method? Link to comment https://qualityforum.zeiss.com/topic/13678-rotary-table-issue/#findComment-70278 Share on other sites More sharing options...
[Ke...] Posted January 21, 2021 Share Posted January 21, 2021 Please sign in to view this quote. He was doing 1 sphere, but changed it to 2 spheres. Link to comment https://qualityforum.zeiss.com/topic/13678-rotary-table-issue/#findComment-70280 Share on other sites More sharing options...
[Ri...] Posted January 21, 2021 Share Posted January 21, 2021 Please sign in to view this quote. I see that after re-reading. Ooops. I think it's best to perform the test with using the part as the RT axis. Link to comment https://qualityforum.zeiss.com/topic/13678-rotary-table-issue/#findComment-70282 Share on other sites More sharing options...
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