Electronics Forum | Thu Nov 30 23:48:16 EST 2000 | DL
Dave, Thanks for the input. I cant beleive I didnt think to check the suppliers web site, I feel like an... well anyhow. The leads I'm referring to are place at a 90 degree angle from the edge of the pcb and extend towards the bottom as opposed to
Electronics Forum | Fri May 10 14:02:05 EDT 2002 | pjc
First off what bone-head designer put them there in the first place. Vias in solder lands is a big time no no. I had this problem at a CEM I worked at. I had the customer change the design but had to run the 6 samples they supplied. I ended up fillin
Electronics Forum | Wed Nov 16 05:12:36 EST 2011 | bobpan
A couple of things i would try: 1. Does function 30 give you a nozzle height that is repeatable. The number should be around 200.....+/- 20 or so. 2. I would change the z-rod because the spring could be worn out and when the vacuum turns on....it ca
Electronics Forum | Thu Nov 17 05:11:09 EST 2011 | bobpan
wow.....lets try some more things....... first....i think quad align error 0 has something to do with the theta number not being at 0,6000,12000,18000. I am not for sure about that but check it out by doing a function 3 on your pickups. second.....
Electronics Forum | Mon Sep 12 03:38:03 EDT 2016 | rob
Hi John, We picked up a used laser marker (Asys ALS03) last year for around 30K euros and it has done approx 2M codes (we use 6mm square QR) in the last year without fault - it reads them all back to confirm which is handy. We also use labels, and
Electronics Forum | Thu Nov 17 22:30:01 EST 2011 | olddog
Hi again Bob, I'll go by your item numbers: 1. OK, I'll not worry about it. 2. Somehow, it seems to me that it must be doing something or in Run Step Placements there wouldn't be different behavior for Alignment type 0 vs. other settings. I know I'
Electronics Forum | Wed Oct 13 12:12:04 EDT 1999 | Bill Haynes
Hello Morris, I hope that my superiors don't see your message or they might have me go through all of that to calculate my cost per part mounted. One of the things that has helped me out considerably is an Accounting report that gives me all
Electronics Forum | Thu Nov 17 17:44:19 EST 2011 | bobpan
Tim, 1. You dont need the vacuum verify if the quadalign is working properly. If you have the part quad-aligned and dont have alignment type at 0 it will never 'not' place a part. More or less...the vac verify was needed for the chucking machine (3c)
Electronics Forum | Fri Feb 29 09:51:39 EST 2008 | iantech
Guys I am trying to measure the placement repeatabilty of my placement machines, and I was wondering if you guys had any usefull excell tools you have developed along the way that might help me input the figures so my bosses can understand ian.
Electronics Forum | Sun Mar 02 17:02:52 EST 2008 | davef
We have talked about Cpk many times here on SMTnet, discussed source of glass slugs for placement assessment, and talked about placement Cpk a few times. Search the fine SMTnet Archives to find those threads to provide you with additional background.
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