Donner Company Case Solution

Donner

Process Flow
Preparation Stage

Image Transfer

Pinning grace to apply table
Drilling Holes
CNC
Drill Press
Metallization
Washing scrubbing and coating of bloodshed with DFPR
Alignment of Customer Artwork and exposure to UV
DFPR Developing Machine
Electroplating and throne Plating
Chemical Etching of DFPR and Copper layer
Pinning impanel to usage table
Drilling Holes
CNC
Drill Press
Metallization
Washing scrubbing and coating of panel with DFPR
Alignment of Customer Artwork and exposure to UV
DFPR Developing Machine
Electroplating and derriere Plating
Chemical Etching of DFPR and Copper layer

Fabrication
Soldermask Silk screening
Solder Bath
Reduction to ruined profile by CNC routing/ cowhand abbreviate
Soldermask Silk screening
Solder Bath
Reduction to undefiled profile by CNC routing/punch coerce

Order Size in drilling
Let Order size of it = N
If manual press is used, wherefore time taken to punch N orders = 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 slight that time taken by manual press i.e.




15+40N >= 240 + 2N => N = 6
Hence for Order sizes 6 or preceding(prenominal) CNC should be used and order sizes below 6, manual press should be used
CNC Routing
Let number of Orders = N
cartridge clip for punch press = 50 + N
clock 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 area (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 capacity 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: Orderessay



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