R
Anybody can advise
In our production we are manufacturing FFC (flexible flat cable) The product life cycle for a model is very short due a lot that contain 2000-4000pcs can be finished within 1 hour. everyday a prodcution line (total of 4) are schedule to run minimun 5 to 6 models, each model may only run a day only and may need to wait a week or a month later to run again. Hence the production is almost running dilferent model from day to day.
due to customer request only Cpk data the management are also only concern about it.
our current method are randomly select a model/line in a week and get 30 sample/lot to calculate the Cpk data. and we will use it as a reference for that week Cpk reference for all model.
this method not working very well because the Cpk data keep fluctuating from week to week.
pls give some advise
In our production we are manufacturing FFC (flexible flat cable) The product life cycle for a model is very short due a lot that contain 2000-4000pcs can be finished within 1 hour. everyday a prodcution line (total of 4) are schedule to run minimun 5 to 6 models, each model may only run a day only and may need to wait a week or a month later to run again. Hence the production is almost running dilferent model from day to day.
due to customer request only Cpk data the management are also only concern about it.
our current method are randomly select a model/line in a week and get 30 sample/lot to calculate the Cpk data. and we will use it as a reference for that week Cpk reference for all model.
this method not working very well because the Cpk data keep fluctuating from week to week.
pls give some advise