Donner Case

inn Size for drilling * The Manual press needs 15 bit for particularize up, in addition to 0. 08 minute of arc for every hole. Knowing that the representative circuit board has 500 cut holes, then run clip allow be 0. 08*500 = 40 min / board. Therefore, metre interpreted to drill N boards manu entirelyy will 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 judgment of conviction will be 0. 004*500 = 2 min / board.Then the time interpreted to drill N boards by CNC drill will be uniform to 240 + 2(N) * It is then logic to conclude that we will use CNC drill only when in gild sizes that will provide timing benefit everywhere manual press. i. e. when 240 + 2N 15 + 40N which elbow room N 6 * However the break floor policy dictates that only orders for more than 100 boards be drilled by CNC drill Surely this must be changed * This means that they employ the CNC drill in only 12 orders of the 60 orders received in September, while actually they should have used it in 35 orders ( all orders 6) Order Size for Profiling * Set up time for dawdler press is 50 min, while run time is 1 min / board. So season taken to profile N orders will be 50 + N * While set up time for CNC routers reaches cl min, in addition to 0. 5 min / board run time. So the time needed to complete profiling of N boards equals cl + 0. 5(N) * thusly CNC reuters will produce time benefit if used only in orders more than 200 boards Capacity of Dry Film Photo jib bea * Assuming order size equals 8 boards Then the empanel preparation will take 5 + 0. = 5. 2 min Lamination & depiction will take 20 + 2 = 22 min outgrowth will take 20 + 0. 2 = 20. 2 min * This means that Lamination and exposure are the bottle neck of the function, and the cycle time for this graduation will be 22 min / panel. Which means that the electrical condenser will be 2. 7 panels / hour * If we increased order size to 2 p anels (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, plainly the cycle time drops to 12 min / panel raising the capacity to 5 panels / hour.. Labor time for different order sizes * Assuming quaternity orders with one, eight, hundred and thousand boards each cognitive operation Setup Run peerless hop on Order Eight Board Order Hundred Board Order Thousand Boards order PREPARATION Art function Generation 29 0 29 29 29 29 Inspect & cut back 20 0. 5 20. 5 20. 5 26. 5 82. 5 garget Tooling Holes 10 0. 5 10. 5 10. 5 16. 5 72. IMAGE pitch Drill Manual 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 2 0. 2 22. 6 45 Electroplate 25 8. 5 33. 5 33. 5 135. 5 1087. 5 denude DFPR 5 0. 2 5. 2 5. 2 7. 6 30 Etch & Tin Strip 10 0. 10. 2 10. 2 12. 6 35 FABRICATION Soldermask 45 1. 5 46. 5 46. 5 64. 5 232. 5 Solder magnetic inclination 30 0. 5 30. 5 30. 5 36. 5 92. 5 profile Punch Press 50 1 51 58 150 CNC Router 150 0. 5 650 Inspect, Test, Pack 45 1. 5 46. 5 57 145 1545 Total Labor eon 397 615 1160 6545 * Total Labor time is 397 minutes, 615 minutes, 1160 minutes, and 6545 minutes. * Large orders will best utilize the operationLabor distribution for the operation considering token(prenominal) 8 boards per order * One technician is assigned to inspection & shear, and Punch Tooling Holes Operation Time = 31 minutes * One technician is assigned to CNC drill, and MetallizationOperation Time = 27 minutes * One technician is assigned to panel prep, Develop, and Strip DFPROperation Time = 31 minutes * One technician is assigned to Laminate & Expo se, and Etch & Tin StripOperation Time = 31 minutes * One technician is assigned to ElectroplatingOperation Time = 33. minutes * Two 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 compress as soon as the order is issued and prior to the actual work start.Throughput rate for manufacturing process is equal to the largest operation time for processes = 34 min to produce a patch of eight boards Max idle time per technician is 10 minutes per patch Reduce lead time for order delivery * Provide an initial inventory to reduce raw textile delivery time * Provide a fixed schedule for operation to minimize bottlenecks and work piling * Assign experienc ed technicians for emergency have orders, small sized orders, and return boards to perform work off the main(prenominal) production line. Introduce a job action sheet woful with every panel to check mark every finished process to eliminate any returned work due to unperformed processes. * For any impediment order a complete reschedule for the complete order is authorisation * Create a WIP and schedule sheet visual for the president and gross revenue department to consider while planning for a bid *