| | | | | We're running into problems with board damage (broken traces, solder shorts) due to pliers and other bizarre tools being used for depanelization. I need some sort of fixture for this. A delrin plate with a slot cut to the correct depth and width might work. Are there any vendors experienced with CPC and PCI that someone could recommend? | | Good Mornin'... | | Been there, done that...but my first question is; are you depanelizing, or are you breaking off the "skirts" or tabs from individual PCB's? Do you have what are sometimes called "rat-bites" drilled into tabs, or are the boards scored? I guess before answering those questions, the first one would be, do you have any control over those aspects of the fab, or are you a contractor? It's been my experience that if one is having the issues that you are speaking of, there's probably a better designed breakaway that will avoid the damage. You really shouldn't have to use additional tooling to depanelize your boards, I mean that's the whole point behind scoring and drilling these features in the PCB, to eliminate additional tools to accomplish this. Let us know something about the board, and I bet we can give some recommendations to help you make a clean break from this mess....hehehe | | -Steve Gregory- | Hi Steve! | We design and build (but not fab) our own PCBs, but | it would seem that nothing is designed for manufact- | urability. I'll guess that you've been there, too. | My main problem now is the motherboard for a new | product that we've launched. The board is .100" | thick and 16 x 7" OD. So I guess we're not really | depanelizing these babies, just removing the tabs | or "skirts" as you call them. The boards are | scored with a 30* cut; the remaining board is | .015" +/- .003." | I cannot afford to have any of these boards damaged. | Not one. But I feel that the solution may have to | lie W. Manufacturing Engineering, for reasons better | left unposted. Bet most of you have been there, too. smd: Since your boards are scored, have we got the tool for you!! It's a circular blade that is supported with a frame over a roller bearing. The bearing supports the board, while the blade "crushes/cuts" the remaining material between the score cuts as you push the board through the tool. This works real neat. I know Radoll works and I think CAB is similar. CAB also makes a "nibbler" thing for rat bite/routed break-away tabs. Dave F Radoll Designs 912.228.0200 Andy mini-score $9.9k CAB Technology Westfield, MA 978.392.3459 fax 3601
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