Plot the dot - paper vs puter
Hi Michael
Do your operators collect the data points and enter them into computer SPC software for your Quality Engineer to review at a later date?
It seems from your second question that you are finding out of control (OOC) conditions much after the fact.
I hope this is not the case. If so you are not getting all the value possible out of SPC.
This is a downside of some software, in that you need an extra step to generate the chart (which people may not take the time to do).
The old school method of plotting charts on paper by hand was very powerful, the operator knew right away that there was an OOC condition.
As Steve has said, the operator must react to the OOC as it happens.
As a Quality Engineer here, I have NO responsibility for SPC charts....they belong to manufacturing and the operator. My role is to train, help them improve the process, do studies, look for rare occurences, zone and pattern anaysis, etc. But hour to hour, the charts are theirs.
Can you provide more background?
jackylpt said:
there is a process, operator take data every hour(two shift a day, total 16 data a day) and put data in computer to draw SOC chart,
qustion1: as a quality engineer, how long do you check your SPC chart? I means one hour, half day or other? Because quality engineer also have other duty.
question2: when you find out of control, what's response do you do in this two case?
a) if process is still running(stop machine, or ???)
b) if porcess is finished now(check product in stock? or??
qustion1: as a quality engineer, how long do you check your SPC chart? I means one hour, half day or other? Because quality engineer also have other duty.
question2: when you find out of control, what's response do you do in this two case?
a) if process is still running(stop machine, or ???)
b) if porcess is finished now(check product in stock? or??
Do your operators collect the data points and enter them into computer SPC software for your Quality Engineer to review at a later date?
It seems from your second question that you are finding out of control (OOC) conditions much after the fact.
I hope this is not the case. If so you are not getting all the value possible out of SPC.
This is a downside of some software, in that you need an extra step to generate the chart (which people may not take the time to do).
The old school method of plotting charts on paper by hand was very powerful, the operator knew right away that there was an OOC condition.
As Steve has said, the operator must react to the OOC as it happens.
As a Quality Engineer here, I have NO responsibility for SPC charts....they belong to manufacturing and the operator. My role is to train, help them improve the process, do studies, look for rare occurences, zone and pattern anaysis, etc. But hour to hour, the charts are theirs.
Can you provide more background?