Electronics Forum | Wed Apr 11 20:27:34 EDT 2018 | kellogs54
Hi All, Sorry if this seems a stupid question but we been having a huge amount or parts rejected on our placement machines. I started looking at the placement program and found the part tolerance date seems to tight. Before I go and open the tolera
Electronics Forum | Tue Nov 15 14:01:00 EST 2011 | olddog
Well, everything WAS going OK until I started setting up for a board job (40 boards with about 450 components each - many image repeats). We setup 37 feeders with their parts and started defining the pickups and placements. Part #1 is an SOD123 zener
Electronics Forum | Thu Aug 04 22:02:25 EDT 2011 | fujiphil
IP3 camera calibration, you need the following: 1. Part camera resolution Jig. 2. 10mm nozzle for nozzle centering. 3. Button jig (skip). 4. Glass board and Glass parts. 1. Conduct the Camera resolution. Set the following Delta values: X=+/-0.1mm;
Electronics Forum | Tue Mar 30 22:43:36 EST 1999 | dean
| Does anyone know of a contract manufacturing house that can guarantee smt component placement and can verify placement of +/-.015? | | Thanks in advance | Question: mm, inches, or mils? I can do it. However, what is your reliability level? 9
Electronics Forum | Thu Apr 12 10:58:42 EDT 2018 | dleeper
I don't think there's really any industry standard tolerance setting or value. It's safe to open up the tolerances pretty wide as long as your placement accuracy doesn't suffer.
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 | Thu Nov 17 15:57:41 EST 2011 | olddog
Hi Bobpan, Regarding "second", the results of the test are no difference - still rejects the part. I tried 2 mils, 3 mils, 5 mils, 7 & 9. I changed the tolerances fron about 15% to 20%+. By the way, I did put on the new nozzle and it is still the sa
Electronics Forum | Thu Nov 17 14:33:02 EST 2011 | olddog
Thanks again Bobpan for all of your help. I hope some of my questions are dumb ones. Regarding "first", the QA error 0, you were right. In checking the setup, for some reason theta was 65227 instead of the 0 that I thought I had set. Regarding "sec
Electronics Forum | Wed Nov 16 14:44:31 EST 2011 | olddog
Bobpan, thank you for your speedy response. As to the items you noted: 1. I did a test of Funct 30 for the first 5 nozzles, 2 times each as follows: noz1 Ht=215 & 219, center=1005 (all nozzles all tests), run out 2.2 & 2.7. Noz2 Ht=228 &228, runout=
Electronics Forum | Fri May 26 08:16:14 EDT 2006 | Chunks
This could be what we call a "non-problem". If your print is off slightly, yet after reflow there is no solder related defects, it should be considered OK. Move your inspector from the printer to right after the oven. This would enable them to ins
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