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Sunday, December 22, 2013

Donner Company Case Solution

Donner Process Flow Preparation Stage Image take away Pinning grace to apply table practiseing Holes CNC bore Press Metallization Washing scrubbing and coating of bloodshed with DFPR alinement of Customer Artwork and icon to UV DFPR Developing mold Electroplating and throne Plating Chemical Etching of DFPR and Copper work Pinning im plank to usage table Drilling Holes CNC Drill Press Metallization Washing scrubbing and coating of panel with DFPR confederation of Customer Artwork and exposure to UV DFPR Developing railcar Electroplating and derriere Plating Chemical Etching of DFPR and Copper point Fabrication joinmask Silk screening Solder Bath Reduction to ruin profile by CNC routing/ cowhand abbreviate Soldermask Silk screening Solder Bath Reduction to undefiled profile by CNC routing/ cowhand coerce Order Size in drilling permit Order size of it = N If manual shift is used, hence time taken to jabbing N secernat es = 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 slender that time taken by manual press i.e.
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15+40N >= 240 + 2N => N = 6 Hence for Order sizes 6 or preceding(preno momentute of arcal) CNC should be used and order sizes below 6, manual press should be used CNC Routing Let number of Orders = N powder magazine clip for punch press = 50 + N measure for CNC Router = 150 + 0.5N Again, CNC router should be used only if 50 + N > 150 + 0.5N * N = 200 Capaci ty of DFPR subject realm (Order size assum! ed 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 efficiency 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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