Subgroup Size on High-Mix Process
- September 3, 2019 at 6:33 pm #241895
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I would like to ask for opinions regarding subgroup size please, on a high mix process.
Generally at least 3 pieces of a lot of regularly 30 pieces are measured (first, mid and last), the lot size may be bigger thus increasing the amount of pieces inspected too, the same part number won´t run again at least for another two weeks (except on high demand part numbers when sometimes is less).
For a CPK analysis, what would be the best approach for subgroup size on this scenario? should we consider one lot as a subgroup (s.g. size=3)? should the sample pieces be taken consecutive instead?
Thanks in advance for your help,
Israel0September 4, 2019 at 8:23 pm #241944
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