You're right GTOlover, once a procedure is approved in an ISO company, it's really hard to get the procedure to change. If this is a component part that is shipped to another company they may need to go through the qualification process all over again.
Rob, I have to agree to a point. When large coprporations set up quality systems of processes and procedures, changes become rigid and inflexible to the point that many people do not want to do the work to make any change (even when it is benefical). I have worked at a large manufacturing facility that it was nearly impossible to upgrade a simple proximity sensor. Then I worked at a small shop that I could completely re-engineer a robot cell with little resistance!
However, it would seem that this change should of been a worth while if it prolongs the servo motors life.
We're seen this type of management problem a couple times in recent Made by Monkeys postings. It's quite surprising that management would shrug off -- or refuse to accept -- solutiuons presented by engineers. This seems to be more than just a communications problem.
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