Balancing Optimization And Scheduling Simulation Of Seating Assembly Line

Against the backdrop of market competition becoming more and more intense and the increasing application of advanced manufacturing technology and management experience, how to reduce business operating costs and risks, improve production efficiency and economic benefit, is what matter most today of every company. With the number of the order-produced and the diversity of customer needs increasing, so all firms reacting to the change of outside uncertainty is even more important. When a firm added the product varieties, but the production capacity is unable to keep pace with this development, through introduction of new technologies and equipment to increase production capability, or optimizing existing production resources and improving the utilization ratio of resources, or outsourcing part of the production to reduces the pressure of production. These require companies to balance time, cost, risk, benefit and make good choices after considering the corresponding factors.In this paper, the situation when the company A has two new projects, but its production capacity is insufficient was carried out in-depth knowledge, proposed that according to product quantity demand and similarity of assembly procedures, assign the productive task of two new projects Z5 and Z6 to existing five seat assembly lines. This not only can reduce the cost to build new seat assembly line and company risk, but also redesign and optimize the existing seat assembly line. For the design of new seat assembly lines after adding new projects, at first, draw work sequence diagram of each project product, then apply the industrial engineering method to identify the standard operation time of each work element, and work out the mixed product work sequence diagram. Use the Hoffmann method in heuristic methods, through listing the precedence matrix of all work in mixed-model assembly line, and according to calculated assembly line cycle time and minimum number of work ground, to allocate all optimized work elements of three seat products. After balancing seat assembly line, this paper combines the scheduling of mixed-model seat assembly with simulation. Through using minimal production set cyclic ordering method and Flexsim software simulation, meanwhile applying Excel sheet importing data to Flexsim, finally the optimal production sequence of mixed flow seat assembly line is obtained. This paper focuses on the balanceing optimization and the scheduling problem of mixed assembly line system, especially the combination method of simulation software and MPS cyclic ordering solves the scheduling problem of mixed line. Realistic balancing and scheduling problems usually are necessary through the iteration trial-produce of production lines to make decisions. Flexsim simulation not only avoids the waste of substantial resources and time, but also provides a manageable and efficient method for mixed assembly line system, and has reference to further research of the project in the future.