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An example of server manufacturing industry is chosen to carry out the optimal layout design of production line by use of FlexSim simulation software. In the case study, it is classified into the traditional man-made assembly production line A and the automatic assembly production line B by using robots in order to simulate the process. By means of the information of production efficiency obtained from the simulation software, the difference between the labor work and industrial automation is found. Moreover, the optimal number of automatic devices (the robot) and their employment are determined. In the ideal case of the current simulation, the simulation results show that the man-made assembly in production line A can produce 152 sets of servers in running 24 hours and the average cycle time of each server is 9.47 minutes (568.42 seconds); the automatic assembly production line B can produce 452 sets and the average cycle time of each server is 3.16 minutes (189.60 seconds) under the same operating conditions. Regarding cost, the former production line A is estimated about NT$ 33,042,220 and the latter automatic assembly production line B is estimated about NT$ 27,379,300 in two-year operation. As seen, using automatic devices for assembly production can increase production efficiency and reduce costs.
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