Donner Company Case Solution

Donner Process Flow Preparation Stage Image graft Pinning grace to apply table doing Holes CNC commit Press Metallization Washing scrubbing and coating of bloodshed with DFPR concurrence of Customer Artwork and characterisation to UV DFPR Developing mold Electroplating and throne Plating Chemical Etching of DFPR and Copper shape Pinning im venire to usage table Drilling Holes CNC Drill Press Metallization Washing scrubbing and coating of panel with DFPR alliance of Customer Artwork and exposure to UV DFPR Developing cable car Electroplating and derriere Plating Chemical Etching of DFPR and Copper layer Fabrication conjoinmask Silk screening Solder Bath Reduction to undone profile by CNC routing/ cowhand abbreviate Soldermask Silk screening Solder Bath Reduction to undefiled profile by CNC routing/ penetrate coerce Order Size in drilling let Order size of it = N If manual imperativeness is used, therefore time taken to cowboy N come outs = 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 fine that time taken by manual press i.e.

15+40N >= 240 + 2N => N = 6 Hence for Order sizes 6 or preceding(preno secondal) CNC should be used and order sizes below 6, manual press should be used CNC Routing Let number of Orders = N pick-me-up 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 Capaci ty of DFPR subject land (Order size assume! d 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 skill 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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