Electronics Forum | Tue Apr 23 15:19:35 EDT 2024 | tey422
The impact of course is a lot less for newer PnP, but for older machine there might be different story. What if the bad marks not being read correctly? The result would be "good" board being skipped, while "X-out" being loaded. That would waste mu
Electronics Forum | Sun Mar 04 02:21:40 EST 2012 | eadthem
Most PNP machines and AOI machines shuld have a X out feature. For us we use to use whiteout pens to mark the badsense spot. Now atm we use white lables, becuase there is no dry time. The lables have there own issues, They cause overpasteing issues
Electronics Forum | Tue Mar 19 07:04:21 EDT 2013 | Flux Capacitor
When I enter in the program data for a particular PCB on our Juki, I choose a board fiducial and enter its X Y location as the "bad mark position". (Although I'm not sure if your model refers to this as a "bad mark" as well.) Place a sticker over tha
Electronics Forum | Thu Jul 25 15:18:18 EDT 2002 | stefwitt
You would have to tell us what machine brand you are using, as everyone has his own idea how to recognize X-outs. I find the auto-recognition very time consuming ( non-productive machine time ), unless the camera could recognize an image in one shot
Electronics Forum | Thu Feb 16 12:16:36 EST 2012 | jax
I would assume every EMS company runs into this issue on a daily basis. Before we get to how a machine handles it, I would recomend setting up an acceptance criteria with your board supplier... if you plan on accepting them at all. (ex. No more than
Electronics Forum | Thu May 03 10:38:42 EDT 2001 | davef
You need to have a way to qualify and monotor your process. X-ray and ERSA's fiber optic inspection thingies are two approaches for doing that. There are lots of good x-ray machines out there. Get a transmissive x-ray machine with resolution of 10
Electronics Forum | Fri Mar 17 14:53:08 EST 2006 | Board House
Hi Brad, Being that I work for a board house here is my take on this issue. In the past it used to be 1 scrap per palt up to 10% of the total order. scrap is supposed to be sepperated to location and packaged sepertaly. Then it turned into No Scra
Electronics Forum | Tue Apr 23 09:52:57 EDT 2024 | tommy_magyar
Hi there, As long as there is a standard procedure (choosing a so called bad-board-sensor [BBS], machines being taught in with this option, and operators trained) the impact should not be high. True that you have to push more panels through. The t
Electronics Forum | Sat May 18 02:20:15 EDT 2024 | SMTA-64387138
If I have more than 1 X-out on a panel I set it aside for use as a setup piece or for training. If that's all we have and I need a couple more boards to meet an order I'll inspect the bare panel myself and go from there. We get a great price on board
Electronics Forum | Fri Mar 17 08:58:20 EST 2006 | russ
Not aware of any published standard for this. Usually we take care of this upfront with the supplier. No more than X amount of panels with one or more Xouts in any lot, No more than X number of Xouts per panel, so on and so on. Not defending boa
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