Donner Case

modulate Size for employmenting * The manual(a) press needs 15 instantute for set up, in addition to 0. 08 arc moute of arcute for every hole. Knowing that the typical lap covering board has 500 bore holes, therefore go away clipping get out be 0. 08*500 = 40 min / board. Therefore, clock choosen to occupation N boards manually leadinging be equal to 15 + 40(N) * On the other hand the CNC drill needs 240 min for set up, in addition to 0. 004 min for every hole. So run duration will be 0. 004*500 = 2 min / board.Then the cadence canvasn to drill N boards by CNC drill will be combining weight to 240 + 2(N) * It is then logic to conclude that we will use CNC drill solo in read sizes that will provide clock benefit over manual press. i. e. when 240 + 2N 15 + 40N which means N 6 * til now the shop floor policy dictates that only arrays for more than 100 boards be drilled by CNC drill Surely this moldiness be changed * This means that they use the CNC drill in only 12 orders of the 60 orders received in September, while truly they should have used it in 35 orders ( all orders 6) Order Size for indite * Set up duration for thrusting press is 50 min, while run condemnation is 1 min / board. So eon taken to profile N orders will be 50 + N * While set up m for CNC routers reaches one hundred fifty min, in addition to 0. 5 min / board run time. So the time needed to complete profile of N boards equals 150 + 0. 5(N) * Thus CNC reuters will produce time benefit if used only in orders more than two hundred boards Capacity of Dry Film scene Resist bea * Assuming order size equals 8 boards Then the circuit board readying will take 5 + 0. = 5. 2 min Lamination & Exposure will take 20 + 2 = 22 min dampenment will take 20 + 0. 2 = 20. 2 min * This means that Lamination and exposure are the feeding feeding bottle neck of the handle, and the cycle time for this timbre will be 22 min / grace. Which means that the capacity will be 2. 7 panels / hour * If we increased order size to 2 panels (16 boards) Panel preparation will take 5 + 0. 4 = 5. 4 min Lamination & Exposure will take 20 + 4 = 24 min Development will take 20 + 0. 4 = 20. 4 min Lamination & exposure are still the bottle neck of the process, but the cycle time drops to 12 min / panel face lift the capacity to 5 panels / hour.. weary time for different order sizes * Assuming four orders with one, eight, hundred and thousand boards each appendage Setup Run wiz placard Order Eight Board Order Hundred Board Order 1000 Boards order PREPARATION Art black market contemporaries 29 0 29 29 29 29 Inspect & shear 20 0. 5 20. 5 20. 5 26. 5 82. 5 stop up Tooling Holes 10 0. 5 10. 5 10. 5 16. 5 72. IMAGE TRANSFER Drill manual(a) 15 0. 08 55 CNC Drille 240 0. 004 256 440 2240 Metallization 10 0. 75 10. 75 10. 75 19. 75 103. 75 Dry Film Photoresist 1. Panel 5 0. 2 5. 2 5. 2 7. 6 30 2. Laminate & Expose 20 2 22 22 46 270 3. Develop 20 0. 2 20. 2 20. 2 22. 6 45 Electroplate 25 8. 5 33. 5 33. 5 135. 5 1087. 5 Strip DFPR 5 0. 2 5. 2 5. 2 7. 6 30 Etch & Tin Strip 10 0. 10. 2 10. 2 12. 6 35 FABRICATION conjoinmask 45 1. 5 46. 5 46. 5 64. 5 232. 5 Solder Dip 30 0. 5 30. 5 30. 5 36. 5 92. 5 visibleness Punch Press 50 1 51 58 150 CNC Router 150 0. 5 650 Inspect, Test, Pack 45 1. 5 46. 5 57 145 1545 natural Labor conviction 397 615 1160 6545 * Total Labor time is 397 trans challenges, 615 minutes, 1160 minutes, and 6545 minutes. * Large orders will outgo utilize the operationLabor distribution for the operation directing stripped-down 8 boards per order * cardinal technician is assign to inspection & shear, and Punch Tooling Holes Operation succession = 31 minutes * One technician is designate to CNC drill, and MetallizationOperation Time = 27 minutes * One technician is appoint to panel prep, Develop, and Strip DFPROperation Time = 31 m inutes * One technician is designate to Laminate & Expose, and Etch & Tin StripOperation Time = 31 minutes * One technician is assigned to ElectroplatingOperation Time = 33. minutes * cardinal technicians are assigned to SoldermaskeOperation Time = 23 minutes * One technician is assigned to SolderdipOperation Time = 30. 5 minutes * Two technicians are assigned to Punch pressOperation Time = 25. 5 minutes * Two technicians are assigned to Inspect, test, packOperation Time = 24 minutes * Artwork generation, CNC drill diskettes, and CNC router diskettes are done with non productive stuff as soon as the order is issued and previous to the actual work start.Throughput rate for manufacturing process is equal to the largest operation time for processes = 34 min to produce a pick of eight boards Max idle time per technician is 10 minutes per patch impose lead time for order voice communication * Provide an initial inventory to degrade raw material delivery time * Provide a fixed inst rument for operation to minimize bottlenecks and work tidy sum * Assign experienced technicians for emergency bam orders, small sized orders, and return boards to perform work off the main intersection line. Introduce a job action sheet moving with every panel to check mark every washed-up process to eliminate any returned work due to unperformed processes. * For any tab order a complete schedule for the complete order is mandatory * compose a WIP and schedule sheet ocular for the president and sales department to consider while planning for a invite *