By Nick T. Thomopoulos (auth.)
Assembly Line making plans and regulate describes the elemental basics of meeting strains for unmarried version traces, combined version make-to-stock strains, combined version make-to-order strains and for one-station meeting. The publication indicates tips on how to decide upon the amount of devices to time table for a shift period, compute the variety of operators wanted on a line, set the conveyor velocity, coordinate the most line with sub-assembly strains, assign the paintings components to the operators at the line, series the types down the road, series the roles down the road, calculate the half and part standards for a line and for every station, make sure the refill wishes of the components and parts from the providers, compute the similarity among the types being produced and exhibit purposes, use studying curves to estimate time and prices of meeting, and degree the potency of the road. the cloth is undying and the e-book won't ever turn into out of date. the writer provides ideas with easy-to-understand numerical examples that may be utilized to real-life applications.
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Extra info for Assembly line planning and control
Assume the management is considering schedule quantities of 97–101 units. Although the shift schedule will be fixed for the planning period, each day, the mix of the models may vary slightly, depending on the requirements from the downstream locations. Should 100 units be scheduled for a shift, assume the typical model mix would be (61, 30, 9) units for models 1, 2, and 3, respectively. 5 is a listing on some of the preliminary computations for the five options of (N = 97, 98, 99, 100, and 101) units for the shift schedule.
Part Data To determine the replenishment quantity for a part, the data needed are the following: Part Data 43 h = part Rh = part requirement for the shift duration. Rht = part h requirement for future days t over the planning horizon. In the analysis here, assume Rht = Rh. OH = on-hand inventory OO = on-order inventory M = multiple quantity from supplier L = lead time from supplier in days Pss = parameter of safety stock in days Pbuy = parameter of buy quantity in days. When the assembly schedules are known for more than one day, the requirements are computed as described earlier in this chapter.
8 Inventory replenishment schedule for 7 days on part h = 1 with M = 12, L = 2, Pss = 1 and Pbuy = 4 days, OP = 300, OL = 700 t 1 2 3 4 5 6 7 Rt (OH ? OO)t-1 qt Qt (OH ? 9 Inventory replenishment worksheet for day 1 on the ten parts OP1 OL1 OH0 OO0 h M Rh q1 Q1 1 2 3 4 5 6 7 8 9 10 550 0 0 620 0 0 720 0 0 600 552 0 0 630 0 0 750 0 0 640 12 50 100 30 24 1 50 40 6 80 100 500 100 100 200 100 100 400 100 100 300 1500 300 300 600 300 300 1200 300 300 700 3500 700 700 1400 700 700 2800 700 700 250 2100 120 80 1100 600 80 2000 250 130 0 0 400 100 0 100 0 0 200 70 Because 550 is not a multiple of M = 12, the replenish quantity becomes Q1 = 552.