TAILIEUCHUNG - The Design of Manufacturing Systems Part 8

Tham khảo tài liệu 'the design of manufacturing systems part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Plating cell The connectors are plated in a centralized process which represents a bottleneck in the production flow. Thus this flow is organized by smoothed period batch control adjusting the starting times of production of each batch smoothly along the time scale through the working week. Information and Control Based on this concept of factory planning information flow and control have to change in this factory in comparison to traditional production planning practices. The planning scenario is as follows The material manager receives all orders from customers. He identifies the product families and sorts them by groups. The resulting job list is transferred to the cells via the computer network. Subsequently an operations list is scheduled with assistance by the computer system and or manually. Basic rules for an optimized sequence of orders are available in the cell software. Once the load is in the range of 100 the cell members microschedule the operations list. They check and adjust all the used data paying special attention to the setup times. These times are important for small- to medium-sized batch production because they reduce the utilization times of the machinery. Once the operator thinks that he has found the best sequence he simulates it on the computer. The material manager at the factory level does not control the decisions in the cell. His task is the balancing of orders between the available cells if a cell rejects a planned job he would have to find a different cell to do the job. Shop Floor Tasks According to this cell-based production concept there are many new tasks which have to be performed by the cell team on the shop floor. The team working in the cell may have to perform the following tasks on the shop floor Planning the work for the week Preparing the work and setting the machines Producing the different parts Quality and performance control Management of tools raw materials etc. Maintenance and minor repairs of machine tools Thus .

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