[Jo...] Posted January 15, 2025 Share Posted January 15, 2025 ZEISS INSPECT only shows Pp/Ppk in trend labels like the 1st picture. But I want to reveal Cp/Cpk in trend labels like the 2nd picture. How can I do that? Or do you have Trend code? If you have the Trend code, send it to this email: jhpark96@vpkcorp.com. Link to comment https://qualityforum.zeiss.com/topic/22102-how-can-i-reveal-the-cp-cpk-to-my-trend-labels/ Share on other sites More sharing options...
[DW...] Posted January 15, 2025 Share Posted January 15, 2025 Not sure if I can answer this, but where did the second picture come from? Link to comment https://qualityforum.zeiss.com/topic/22102-how-can-i-reveal-the-cp-cpk-to-my-trend-labels/#findComment-124380 Share on other sites More sharing options...
[Jo...] Posted January 16, 2025 Author Share Posted January 16, 2025 I found this picture in ZEISS forum. Link to comment https://qualityforum.zeiss.com/topic/22102-how-can-i-reveal-the-cp-cpk-to-my-trend-labels/#findComment-124436 Share on other sites More sharing options...
[Na...] Posted January 16, 2025 Share Posted January 16, 2025 Hi, we have an FAQ in the techguide for this: https://techguide.zeiss.com/en/zeiss-inspect-2025/article/how_to_add_Cp_and_Cpk_values_to_the_trendlabels.html The old thread links to our old (deactivated) FAQ. Nanno 1 Link to comment https://qualityforum.zeiss.com/topic/22102-how-can-i-reveal-the-cp-cpk-to-my-trend-labels/#findComment-124442 Share on other sites More sharing options...
[Jo...] Posted January 17, 2025 Author Share Posted January 17, 2025 Thank you for your answer! Link to comment https://qualityforum.zeiss.com/topic/22102-how-can-i-reveal-the-cp-cpk-to-my-trend-labels/#findComment-124524 Share on other sites More sharing options...
[Ma...] Posted January 20 Share Posted January 20 Hi Nanno, I’m taking advantage of this thread to ask for a clarification: which standard or regulation is used as a reference for the calculation of Cp and Cpk? Because in the case shown in the image, even though I have some values outside the tolerance limits, the Cp is greater than 1.33, while the Cpk is not acceptable. Link to comment https://qualityforum.zeiss.com/topic/22102-how-can-i-reveal-the-cp-cpk-to-my-trend-labels/#findComment-144899 Share on other sites More sharing options...
[Jo...] Posted January 20 Share Posted January 20 Hi Marco, this behaviour is (can be) "normal", due to what cp and cpk evaluates. What are Cp and Cpk? Cp, or Process Capability Index: Measures the potential capability of a process under the assumption of perfect centering. Cpk, or Process Capability Ratio: Reflects on the actual process mean, presenting a more realistic image of the process capability. Link to comment https://qualityforum.zeiss.com/topic/22102-how-can-i-reveal-the-cp-cpk-to-my-trend-labels/#findComment-144911 Share on other sites More sharing options...
[Ma...] Posted January 20 Share Posted January 20 Hi Jochen! Thank you for your response. So does Cp have something like a filter that removes the outside measurements? Or does it accept only a certain percentage out of tolerance? because in the example I posted I have a correct Cp, but I have something like 5 measurement out of tolerance. I don't understand this thing.. thank you very much Link to comment https://qualityforum.zeiss.com/topic/22102-how-can-i-reveal-the-cp-cpk-to-my-trend-labels/#findComment-144919 Share on other sites More sharing options...
[Na...] Posted January 20 Share Posted January 20 Hi, we have a small article with Please sign in to view this username. 's post as a picture here on these values: https://techguide.zeiss.com/en/zeiss-inspect-2026/article/introduction_to_cp_pp_cpk_ppk_values.html 2 Link to comment https://qualityforum.zeiss.com/topic/22102-how-can-i-reveal-the-cp-cpk-to-my-trend-labels/#findComment-144923 Share on other sites More sharing options...
[Ma...] Posted January 21 Share Posted January 21 Thank you very much Nanno! Link to comment https://qualityforum.zeiss.com/topic/22102-how-can-i-reveal-the-cp-cpk-to-my-trend-labels/#findComment-144941 Share on other sites More sharing options...
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