Process Measurable - Ideal process measurable for a quality control department

[Andrews]

What could be the ideal process measurable for a quality control department which
a) inspects parts after every manufacturing process and gives clearance for next operation
b) does final inspection before supplying to customer

 

[Jonathon Haddow]

If the Department is the only one doing inspection then for a) it could be problems (faults ) found at next operation that could (should) have been detected by the inspection and for b) customer complaints (faults) found that should have been detected.
Hope this is usefull
Jonathon

 

[noboxwine]

Call me old fashioned

but I still believe capturing internal and external customer satisfaction is most effective and easily reported in Defective Parts per Million, period. Good Luck !

 

[Mike S.]

Re: Process measurable

Originally posted by Andrews
What could be the ideal process measurable for a quality control department which
a) inspects parts after every manufacturing process and gives clearance for next operation
b) does final inspection before supplying to customer

How about this slant?

For part (a): Ask your internal customer(s)! They are your own co-workers! Talk to them! What do they want/need/expect?

For (b), either ask the customer or look at customer complaints/returns that were the fault of inspection missing something.

JMO.

 

[Al Dyer]

b)

It might be the difference between final inspection and dock audits.

I believe the customer will contact you about parts they received and failed, no need to ask them.

a)

Some type of inspection after any major process should be part of the process flow/control plan. A part of the process might be moving a tray of parts from table A to table B which probably not require an inspection other than a "look".
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Now to the point:

A&B) P-Chart, X-R Chart, and ultimately a PPM.

My main concern would be why a "Quality Control" department is doing in-process inspections when the people that make the item should be monitoring their own work and passing it on to the next process. Then as a final inspection "quality" can do the deed.

Al...

 

[Mike S.]

Originally posted by Al Dyer
b)

My main concern would be why a "Quality Control" department is doing in-process inspections when the people that make the item should be monitoring their own work and passing it on to the next process. Then as a final inspection "quality" can do the deed.

Al...

Al,

I don’t know about Andrews’situation, but sometimes it does make sense to have in-process testing done by “QC” or someone “outside” the normal process. I agree that ideally the test would be performed on-line by the people performing the rest of the process. If the test is just using micrometers to measure a simple dimension or any similar relatively easy test performed by cheap tools, on-line testing by the people performing the rest of the process should be done almost always.

However, some tests require highly-skilled people to perform them and/or require the use of expensive and/or sensitive equipment that is not practical to duplicate at every process location. In such cases I believe it is best to have a “QC” or test group act as an internal service organization to the people performing the rest of the process. I’ve fought this battle before with idealists who called me “closed-minded” and insisted that every “workcell” perform their own tests in their own area. Well, at least they insisted until they finally got the written estimate for duplicating the test equipment, facility modifications, and personnel it would take to do that, then suddenly I wasn’t so close-minded and stupid after all. One competitor tried this on a limited basis and from reports I heard it was a disaster of expense and screw-ups, a case of “tearing defeat from the jaws of victory”.

 

[Al Dyer]

Agree 100%

Not all tests can be conducted in the cell by operators.There are tests and inspections that might require sensitive equipment or be conducted in a lab environment..

When feasable inspection should be conducted by cell personel, with maybe a floating QC inspector monitoring the cells for correct gage usage.
Al...