Electronics Forum | Sat Oct 08 19:06:32 EDT 2005 | Mika
Check the timing belt. I have running into a similar situation before. "1 notch of" of the timing belt can cause very strange behaviour of the machine. /Sincerly Ps. let us know your progress. Ds.
Electronics Forum | Tue Jan 16 16:59:39 EST 2007 | realchunks
Pallet angle is usually pretty good. Lead length is also another good thing to keep as short as possible. Air Knives don't work that well. Also check your board. Make sure you have solder resist between each and every thru-hole pad. If the board
Electronics Forum | Wed Sep 08 07:06:36 EDT 2004 | peter016
Hi Rob, Thanks for the reply. Our boards are 4 ~ 6 ups and mostly double sided. The ratio between chips and IC/Odd shape varied from products to products. So, line balancing between chipmounter and GSM is tough to do. Some boards are mirror image to
Electronics Forum | Tue Feb 19 08:48:01 EST 2002 | wen1555
Payback can be calculated in many ways. The main issue is what revenue/margin you can secure from the investment. You need to decide the period in which the equipment will depreciate, I would suggest 5 years max. Obviously devide the total cost by 5
Electronics Forum | Wed Mar 06 10:55:17 EST 2002 | monty2224
We have developed a Cost of Ownership model that incorporates a number of factors when considering SMT equipment. There are the obvious ones like maintenance costs, labor costs and shift patterns. We also considere utilities, quality, set-up time a
Electronics Forum | Tue Jan 16 20:44:07 EST 2007 | davef
Bridging Causes: Insufficient flux, Excessive pre-heat, High conveyor speed, Solder contamination Look here: * http://www.smtnet.com/library/files/upload/Reflow%20Wave%20Poster.pdf * http://smt.pennnet.com/Articles/Article_Display.cfm?Section=Archi
Electronics Forum | Mon Mar 30 09:52:56 EDT 2015 | rgduval
Seems like you've got it about right....though, it's a rather complex equation. Loaded labor cost is only a part of it, if you're trying to estimate down to the last cent. You have to account for energy utilization, space utilization in the factory
Electronics Forum | Tue Mar 31 09:58:29 EDT 2015 | dazdoc1977
Hi Robgd3 for CEM work this task is a doddle especially when I had line manager software at my disposal....This is like pulling hair, If I have worked out how quick my machine can place a certain comp and then match that to the BOM it should give me
Electronics Forum | Mon Mar 30 10:43:31 EDT 2015 | dazdoc1977
Cheers Rob, I thought that I wasn't far from the true answer....I figured that if we were to use a "first piece assembly " quote to get a first off through smt production, This would include start to finish process....e.g Programming to first board
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
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