Hello, I am currently a graduate engineer for a manufacturing company, we produce injection mould caps and blow mould bottles along with steel drums. We are currently looking to reduce the frequency of the injection mould physical quality checks we carry out from every 2 hours to every 4 hours.
I have information on the quality control parameters (Cycle time, filling time, shot volume, etc) for each part produced over the last year. The process is very stable with low variation. I was wondering if anyone knew of any standard sample sizes and sigma levels/AQL levels/Standard deviation/Variability which I can compare with the quality control data I have gathered to act us justification for the reduction in frequency of our quality checks (instead of just saying that we feel the variability is small and the sample size is adequate to say it is a low risk change).
Please let me know if you have any advice/information that can help me out.
Thank you very much!
I have information on the quality control parameters (Cycle time, filling time, shot volume, etc) for each part produced over the last year. The process is very stable with low variation. I was wondering if anyone knew of any standard sample sizes and sigma levels/AQL levels/Standard deviation/Variability which I can compare with the quality control data I have gathered to act us justification for the reduction in frequency of our quality checks (instead of just saying that we feel the variability is small and the sample size is adequate to say it is a low risk change).
Please let me know if you have any advice/information that can help me out.
Thank you very much!