A new value stream mapping approach for complex production systems
A new value stream mapping approach for complex production systems
复制标题
适用于复杂生产系统的新价值流图方法
DOI：
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发表时间：
2006
期刊：
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通讯作者：
Francesco Zammori
中科院分区：
文献类型：
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作者：
M. Braglia;Gionata Carmignani;Francesco Zammori
在本文中，一个创新的框架，应用价值流图的产品与复杂的物料清单。价值流图是绘制流程图和识别其主要关键点的最佳工具之一。不幸的是，它只能有效地应用于线性系统。当制造过程复杂，流程融合在一起时，价值流图不能直接使用。因此，这项工作的主要目标是解决这一限制，使精益生产也可以在复杂的系统中得到加强。该方法基于七个迭代步骤，并将价值流图与工业工程的其他典型工具相结合。其基本思想是执行初步分析，以确定“关键生产路径”使用的临时材料清单。然后，考虑所有可能与其他次要路径共享的可能约束，进行改进。一旦关键路径已经被优化，新路径就可能成为关键路径。因此，分析迭代地进行，直到达到最佳值并且在制品水平已经降低到期望值以下。一个案例研究采取了从真实的设置环境，最后提出了评估的有效性，这里提出的方法。
In this paper, an innovative framework to apply Value Stream Mapping to products with complex Bill of Materials is presented. Value Stream Mapping is one of the best tools to map a process and to identify its main criticalities. Unfortunately, it can be effectively applied to linear systems only. When the manufacturing process is complex with flows merging together, Value Stream Mapping cannot be used straightforwardly. Thus, the main objective of this work is to solve this limitation so that lean production can be enhanced in complex systems too. The proposed approach is based on seven iterative steps and integrates Value Stream Mapping with other tools typical of industrial engineering. The basic idea is to execute a preliminary analysis to identify the ‘critical production path’ using the Temporized Bill of Material. Then, improvements are made considering all possible sharing with other secondary paths as possible constraints. Once the critical path has been optimized, a new path may become critical. Thus, the analysis proceeds iteratively until the optimum is reached and the Work In Process level has decreased under a desired value. A case study taken from a real setting environment is finally presented to assess the validity of the methodology proposed here.