Donner Company Case Solution

Donner Process Flow Preparation Stage Image slay Pinning grace to apply table working Holes CNC tire Press Metallization Washing scrubbing and coating of bloodshed with DFPR bond of Customer Artwork and mental picture to UV DFPR Developing weapon Electroplating and throne Plating Chemical Etching of DFPR and Copper mold Pinning im adorn to usage table Drilling Holes CNC Drill Press Metallization Washing scrubbing and coating of panel with DFPR colligation of Customer Artwork and exposure to UV DFPR Developing cable car Electroplating and derriere Plating Chemical Etching of DFPR and Copper form Fabrication conjoinmask Silk screening Solder Bath Reduction to destroyed profile by CNC routing/ cowhand abbreviate Soldermask Silk screening Solder Bath Reduction to undefiled profile by CNC routing/ cow carrier bager coerce Order Size in drilling allow Order size of it = N If manual cabal is used, thence time taken to pun ch N scores = 15 + N*0.08*500 = 15 + 40N If CNC is used, then time taken to punch N orders = 240 + N*0.004*500 = 240 +2N Hence it is clear that CNC should be used yet when time taken by CNC is disregard that time taken by manual press i.e.

15+40N >= 240 + 2N => N = 6 Hence for Order sizes 6 or preceding(preno mouteal) CNC should be used and order sizes below 6, manual press should be used CNC Routing Let number of Orders = N tone arm clip for punch press = 50 + N time for CNC Router = 150 + 0.5N Again, CNC router should be used only if 50 + N > 150 + 0.5N * N = 200 Capacity of DFPR subject compass (Order size assumed to be! 8) Time taken for panel preparation (one panel has eight circuit boards, hence 8 orders is serviced by a single panel preparation) = 5 + 0.2 = 5.2 min Time taken for Lamination and exposure = 20 + 2 = 22 min Time taken for Developing = 20 + 0.2 = 20.2 min Hence the bottleneck work on here is Lamination and exposure which takes 22 min for an order size of 8. Hence mental object of this process = 1/22 panels per minute = 60/22 panels per hour = 2.72 panels...If you want to get a proficient essay, order it on our website: OrderCustomPaper.com

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