Electronics Forum | Mon Feb 04 08:38:26 EST 2013 | cyber_wolf
Changeover starts when the last board from the work order goes into the reflow oven.
Electronics Forum | Tue Feb 26 09:07:12 EST 2013 | emeto
Stephen, Changeover is the time we are not running the line, but we are changing for another product. Job run on the other hand depends on the quantity you have to build. For some manufacturers running the job will take weeks or months. For other it
Electronics Forum | Tue Feb 26 11:19:31 EST 2013 | anton99
Stephen, That's true and I am going to include the reflow time in our changeovers. That way if its taking to long to change the oven temperature it will show up in our metrics. I agree, if we miss a step in the changeover process our metrics will be
Electronics Forum | Mon Feb 04 08:52:28 EST 2013 | markhoch
Agreed, and stops when the first completed PCB of the next run goes in the oven. After 1st piece verification.
Electronics Forum | Mon Feb 04 22:42:59 EST 2013 | gwego
Thanks a lot. btw, is there a standard for this measure or technical paper to where we can base?
Electronics Forum | Fri Feb 22 03:53:11 EST 2013 | gwego
Hi Frazzled Man,did you mean this way? end - 1st piece of product "B" goes into the oven after 1st piece verification. does 1st piece of product "B" means it is the second piece of Product "B"
Electronics Forum | Fri Feb 22 03:54:11 EST 2013 | gwego
Hi Frazzled Man,did you mean this way? end - 1st piece of product "B" goes into the oven after 1st piece verification. does 1st piece of product "B" means it is the second piece of Product "B"
Electronics Forum | Fri Feb 22 08:14:22 EST 2013 | markhoch
We've had a lot of turnover with our operators, so currently we do a complete 1st article inspection before sending any PCBs in to the Reflow Oven. So our first PCB in the oven is the 1st PCB of the new job. (after it's been inspected).
Electronics Forum | Tue Feb 26 10:12:11 EST 2013 | anton99
Hello, We measure changeover time from when the last CCA leaves the pnp to when the first piece of the new job leaves the pnp. Our average is 20-40 minutes per changeover and we have 6-14 changeovers a day"depending on job size and components per C
Electronics Forum | Tue Feb 26 11:02:47 EST 2013 | stephendo
Yes but if you start measuring it from last board into the oven and don't measure run time then that last board of the previous run might just sit a while before going into the oven... All I"m saying is be careful how you set your metrics, people do
