hi,
seriously, this is one of the best approaches i can think of. some companies actually have designers work for different functions within the company before they start designing...like procurement, quality, and manufacturing.
i find that the best designers are those that spend a lot of time on the production floor asking about their designs, seeing how they go together, actively making changes to improve the process. you can guess who the worst ones are.
phil
-----Original Message-----
From: Croslin, Robert [mailto:[log in to unmask]]
Sent: Wednesday, October 09, 2002 11:44 AM
To: [log in to unmask]
Subject: Re: [TN] First Article Buy-off Process for SMT & Wave Solder
Here's another method that works. At various times over the years, I've had
engineers sit on the production line assembling the little nightmares they
designed, had a Sr. PCB designer manually re-mark an entire lot of boards
she blew the revision letter on, and had another sit and run the test on a
lot of boards he hosed that had to be reworked. There's nothing that helps
accountability like fixing the flub you caused or at least seeing the
consequences. No retribution for honest mistakes, unless you try to hide
them; all we ask is that you fix things first, then revisit the process and
define what has to change so the error will be avoided the next time.
Bob Croslin
Nielsen Media Research
-----Original Message-----
From: Dan R. Johnson [mailto:[log in to unmask]]
Sent: Wednesday, October 09, 2002 12:53 PM
To: [log in to unmask]
Subject: Re: [TN] First Article Buy-off Process for SMT & Wave Solder
We have a system that works. The sign off is done by the next operation who
takes ownership of the product. In our rather simple line test validates
pick and place set-up. If production places 10K wrong value resistors test
will be re-working 10K assemblies. I can assure you that the test department
carefully scrutinizes each set-up. Since we try for a pull system test never
drags their feet, first article assemblies are priority one.
Product documentation (just another process) requires signatures from
Design, Production, Procurement, etc. Each function has a vested interested
in seeing the documentation correct.
In my opinion the key to effective sign off is to have the person doing the
checking be motivated, that is they will personally suffer if things are not
correct. Avoiding bad things is a part of human nature, and even though it
is negative reinforcement the individual has no one to blame but himself
when the punishment comes down. This not to say that an independent third
party can't be effective, I just think it isn't required with the proper
motivation.
That check off/reviews/validation are required should be self evident.
Humans are fallible, biased, and myopic about our own opinions. We all need
a sanity check, even though I try to get each document signed off with no
red lines I worry when no one finds any errors. Did they actually read the
thing?
For what its worth,
Dan
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