Electronics Forum | Thu Oct 24 06:01:16 EDT 2002 | Kent
I'm currently dealing with an design of an end effector that need to pick n place a BGA dead bug package. The design is using peumatic system to do the task. Any advise or suggestion on this kind of design?
Electronics Forum | Wed Jun 09 02:35:10 EDT 2004 | Bernard
Base on the PORON foam rubber recommended, is it possible to apply on small BGA chip of 4x4 ball size 0.3mm. Any specific part no and supplier for this type of foam and is it a anti-static material? Would it be possible to punch out at dia. 3mm?
Electronics Forum | Tue Oct 29 05:22:38 EST 2002 | kent
Thankyou very much for the information. Another question, what are the difficulty of dealing with the larger ball and tighter pitch? What is size of the ball is consider large and how far the distance for pitch is consider tight? Currently I have
Electronics Forum | Wed Oct 30 09:43:01 EST 2002 | gregp
Larger tighter spaced balls will present a problem in sealing the vacuum cup. There will be more leakage in this case. It really depends upon the application. The BGA you mention should not be a major concern. The bigger problems are with bigger
Electronics Forum | Fri Jun 18 11:31:17 EDT 2004 | gregp
I think it depends on the thickness of the PORON sheet. For .3mm balls you could probably get away with a pretty thin sheet (maybe 1/16"). I don't know how thin it comes offhand. For the part you are describing I woulf try maybe a 3.5mm OD and a 1
Electronics Forum | Mon Oct 28 09:48:10 EST 2002 | gregp
If I understand correctly you want to pick BGAs from the ball side using some type of vacuum arrangement. You will find that the reliability of this is dependant on the size of the balls and the pitch. The larger the balls and tighter the pitch, th
Electronics Forum | Thu Mar 23 01:00:59 EDT 2023 | smtauto
Problem solved. Evidently the syst.dbf file that controls all machine settings did not have analog inputs associated with vacuum sensors configured. The correct settings are in the attached photo. Hope this is helpful to others.
Electronics Forum | Fri Mar 17 14:32:54 EDT 2023 | smtauto
SMTnet community! I've been scratching my head on how to resolve the software bug on my MC388 4-head placing machine to no avail. Bug was traced to SMT software reading incorrect analog inputs on the MFX motion controller as follows: When mea
Electronics Forum | Wed Sep 05 18:30:32 EDT 2007 | gmoritz
insert the bug, ... let it rotate ... see how far off the bug's leads are from center, When the head rotates, it rotates about the center (long) lead of the bug. Therefore, the x/y position of that lead does not change as the head rotates. > ...
Electronics Forum | Mon Mar 05 13:05:23 EST 2001 | bdoyle
Hi Charlie, It looks like its displaying your display name on the listing but your username when you post. You're the only person that sees that. We've logged the bug though and will address it in our next bug sweep though. Thanks! Brian
