Sampling for control chart
November 27, 2009 at 11:57 am #24867
Ashok Kumar SrivastavaParticipant@Ashok-Kumar-Srivastava Include @Ashok-Kumar-Srivastava in your post and this person will
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I have come across a gear grinding operation in which 4 pieces and 6 pieces of gears are stacked in a mandrel locating in its bore and loaded on grinding machine between vertical center.
I want to monitor this process in long run using a variable control chart. I am taking subgroup size of 4 & 6 respectively i.e. one stack at a time over a period of 2-3 days for cumulative 20 subgroups. will this subroup will be ok if in case there is a significant diffrence in span width of the gears at top & bottom of the stack respectively.
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