Electronics Forum | Tue Feb 19 10:09:48 EST 2002 | caldon
I always look at the support structure. This is where I feel the real Dollars and cents come into play. Sure you can calculate the derated value over months or years. But If your machine is in a "machine down" situation the derated value does not cha
Electronics Forum | Wed Dec 13 08:56:49 EST 2000 | CAL
One other piece would be to map of the hot spots in the US market. California, NE, SE, Chicago and Texas are hot spots for Electronics manufacuring. Target companies in these areas and hit them with resumes. Some areas are starved for manufacturing e
Electronics Forum | Wed Feb 20 13:24:56 EST 2013 | dyoungquist
If you stop when the first completed PCB of the next run goes in the oven, wouldn't you be including the loading time for that PCB in your change over time? Wouldn't change over time be from the time your p-n-p machine stops loading the last board o
Electronics Forum | Tue Mar 31 09:22:48 EDT 2015 | rgduval
I've always hated using machine specs....they're always best case scenarios, and nearly never capture actual through-put rates. Personally, I don't like using first-piece rates, either...unless you're looking for worst case scenarios. Usually, the
Electronics Forum | Wed Feb 20 15:49:56 EST 2013 | markhoch
Actually, we calculate it BOTH ways, and track each of the two times. TOTAL changeover time starts when the last board of the previous run enters the oven and stops when the first board of the next board enters the oven. (Much the same way you would
Electronics Forum | Fri Jun 07 12:34:30 EDT 2019 | teejsd
C3 just uses heated DI water that it applies, then pulls back into a disposable cartridge. Machine then applies a 10V charge to the sample & measures leakage current(nA,I think) over time(sec). If the leakage current is high enough/fast enough, you
Electronics Forum | Tue May 22 09:11:35 EDT 2007 | jola
Hi. We have changed our produktion from high volume to medium/low and have to start hunting change-over time. We have a lot of products with two sides and the settings of pins in the DEK 265 and Fuji QP242 machines when running b-side takes to long t
Electronics Forum | Thu Aug 26 13:20:56 EDT 2004 | pjc
Machine design plays a major factor in actual placement rate vs. the published tact time max speed. For example, random access horizontal turret head machines can vary greatly depending on nr. of different components and size ranges, while the dual g
Electronics Forum | Wed Aug 25 19:35:48 EDT 2004 | russ
This is highly dependent upon your board, vision inspection, part rotation, part type, layout, number of P/Ns per (1 pers or 100 pers) feeder layout, optimization, nozzle changes, etc... all have significant impact on placement speed. I find if you
Electronics Forum | Tue Feb 26 08:52:35 EST 2013 | stephendo
Do you also measure job run time? IF you don't I"m sure if the change over time is measured but not the run time then the run time will go up almost as much as the change over time goes down.
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