Electronics Forum | Tue May 06 09:44:23 EDT 2003 | gregp
A quick question(s) to anyone who operates SMT lines with only one multi purpose flex machine (P&P). What is an ample feeder count for this machine?...and secondly, do you have a standard kit of common parts that you would wish to reside permanantly
Electronics Forum | Tue May 06 11:14:40 EDT 2003 | k_h
Sorry, I did misunderstand. My opinion would be: Assuming nothing else used feeder space, like tray changers, camera's, nozzles, ..... and assuming 1 slot = 1 8mm feeder position, I think 70-90 slots would be reasonable. A reasonably priced feeder ta
Electronics Forum | Fri May 09 09:29:25 EDT 2003 | gregp
Thanks for the response k_h, A few follow up questions... 1. 70-90 slots seems low for a one machine line. What is the maximum number of different parts on your worst case job? 2. Could the common parts be adressed by being assigned as "point of use
Electronics Forum | Fri May 09 10:44:41 EDT 2003 | gregp
"Point of use" could be your common high runner parts. They are sometimes kept next to the machines (at the point of use) and may be categorized seperately from the rest of the inventory. In your case all of your parts are inventoried next to the m
Electronics Forum | Fri May 09 11:09:47 EDT 2003 | k_h
Each machine has two feeder tables, one is fixed, the other interchangable. Parts on both sides of the machines does not create a kitting problem but can be inconvenient for feeder replenishment. I have found "U" shaped lines to be much more operator
Electronics Forum | Tue May 13 11:12:41 EDT 2003 | k_h
I currently am doing it. Keep in mind the parts are split up, such that, the chips are on one machine and the IC's and odd parts are on the second. It takes much more time to place IC's and odd parts because they need to be handled slower and often c
Electronics Forum | Tue May 13 15:21:51 EDT 2003 | stefwitt
I know, it can be done and I participated in many acceptance tests, in which we counted even the milliseconds. However, my vision had a bit shifted, since the time the Motorola�s and Flextronic�s dumped all these high volume machines to the market. I
Electronics Forum | Tue May 06 10:14:18 EDT 2003 | k_h
A typical machine will have around 100 feeder slots. Manufacturers use the slots differently though, use 8mm feeder counts as your basis. Siemens, for example has 40 slots but you can get 2 (or 3) 8mm's per slot giving you 80+ 8mm feeders, while a Sa
Electronics Forum | Fri May 09 10:29:23 EDT 2003 | k_h
72 different part numbers, 53 being 8mm, remainder being 12-44mm and 3 tray. It may be low but anymore than 100 and you give up throughput because of feeder locations. And thinking about it, 70-90 is low for a low volume high mix line. I guess if I w
Electronics Forum | Mon May 12 15:08:11 EDT 2003 | stefwitt
1. Not quite. The width of 16 mm came most likely from the reel width, which can be up to 15 mm wide for the 8 mm tape. The reel for the 12 mm tape is up to 18 mm wide and would occupy already two slots. If you design a machine from scratch, I would
