Electronics Forum | Thu Feb 27 14:41:48 EST 2003 | jax
Cad rotation should not change with relation to how the part is presented to the machine. It should only depend on how the part is orientated on the PCB when the PCB is at 0 rotation. There is a seperate field to input part rotation inside a feeder.
Electronics Forum | Wed Mar 05 05:29:49 EST 2003 | Matherat
Our company does not assemble boards but our customers do and 2 side smd with through hole is pretty common in our experiences.Our customers usually have already decided to glue the bottom side components and fuse them during the wave solder process.
Electronics Forum | Sun Mar 09 18:33:04 EST 2003 | Dean
Tact time is a poor measure of your throughput capability. The Number of boards produced per hour or shift or 24 hour period is the true measure of what you are really doing. Your theoretial "tact time" can be used as a metric to judge performance,
Electronics Forum | Mon Mar 10 10:28:23 EST 2003 | pjc
Tact times published by placement equipment suppliers usually do not account for board load/unload. Placement time standards set for your boards must include load/unload time. I measure from first fiducial read on board 1 to first fiducial read on bo
Electronics Forum | Wed Apr 09 15:05:45 EDT 2003 | russ
Probably of no help but here it is anyway This is a tuff one. Attrition is due to many factors. You have machine rejects (visual fail, no pick), feeder set-up loss each time a reel is removed you lose X number of parts depending on feeder design (w
Electronics Forum | Thu Apr 10 10:12:33 EDT 2003 | Claude_Couture
Chrissie, You have my deepest sympathies! But I'm very curious about your business takling a space contract. The quantity of boards that you mentioned hints at a GPS satellite systems, am I correct? In any space quality manufacturing, every step of
Electronics Forum | Mon Apr 21 17:13:04 EDT 2003 | jonfox
I remember from my days of machine setups that these packages' CAD data is actually off center from where the placement needs to be. Usually CAD center comes up with the parts more to the large collector/ground pad so the the smaller gull wing leads
Electronics Forum | Mon Apr 28 10:42:20 EDT 2003 | lgroves
Herman, I'm betting you will get a lot of response on this one. Frankly, everybody has their favorite machine. The trick is to consider the types and quantitys of boards you will run. Sometimes, it is better to set up a load for several jobs tha
Electronics Forum | Tue Jun 03 09:04:38 EDT 2003 | Mike F
Do a search in the archives on conformal coating and silicone conformal coat. A variety of companies make conformal coatings and the equipment to apply it. Coatings can be applied by dipping the board into the coating, brushing it on, or spraying i
Electronics Forum | Wed Sep 10 10:45:09 EDT 2003 | vickt
Yukim, First off..sorry I haven't responded to this already. I hadn't noticed any responses in a while. I would be very surprised if you have worn nozzles in a two year period, but it is possible. For instance, if you have been running with an extra
