The Temple Toy Company has decided to manufacture a new toy tractor, the product

Question

The Temple Toy Company has decided to manufacture a new toy tractor, the production of which is broken into six steps. The demand for the tractor is 4,800 units per 40-hour workweek: Draw a precedence diagram of this operation. Given the demand, what is the cycle time for this operation? What is the theoretical minimum number of workstations? Assign tasks to workstations. How much total idle time is present each cycle? What is the overall efficiency of the assembly line with 4 stations; with 5 stations; and with 6 stations?

Explanation / Answer

30 10 20 15 30 15 CYCLE TIME Throughput rate/hr = 4800 / 40 = 120 spreaders/hr Cycle Time = 1/Throughput rate= 1/120 = 2 minute = 120 seconds Total number of stations total production time / cycle time 20+30+15+15+15+10+30/120 SEC 1.125 OR 2 The goal is to cluster the work elements into workstations so that   1.The number of workstations required is minimized 2.The precedence and cycle-time requirements are not violated The minimum number of workstations is 2 and the cycle time is 120 seconds IDLE TIME 2(120 SEC)-135 105 SECONDS

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