Otimização do fluxo de materiais através da manufatura celular
Flows materials optimization through cellular manufacturing
Conceição, Samuel Vieira
http://dx.doi.org/10.1590/S0103-65132005000200008
Prod, vol.15, n2, p.235-250, 2005
Resumo
Nas indústrias cujo sistema de produção é caracterizado pelo sistema job shop, os fluxos de fabricação são complexos e as máquinas são agrupadas por processo, oferecendo um alto grau de flexibilidade em termos de variedade de produtos. Entretanto, essa flexibilidade é acompanhada de elevados tempos de setup, alto volume de estoque de produtos em processo e baixo volume de produção. Este artigo evidencia como a manufatura celular, particularmente a Análise do Fluxo de Fabricação (AFF), pode ser utilizada para otimizar o fluxo de materiais. A aplicação da metodologia AFF em uma pequena empresa do setor moveleiro possibilitou a formação de grupo de máquinas em células, com a obtenção de um novo fluxo de materiais, mais simplificado, com um layout melhor, um melhor reordenamento das operações—chave de produção e ganhos de produtividade.
Palavras-chave
Células de manufatura, análise do fluxo de fabricação, planejamento da produção, job shop
Abstract
Machine layout in a job shop production system is basically a process where machines performing similar processes are grouped together. By physically grouping identical machines together, this production systems offers a high degree of flexibility. However, this flexibility entails many problems, such as high setup costs, inefficient material flow, high inventory cost and low productivity.
To circumvent the above mentioned problems, this paper presents a methodology based on production flow analysis. The experimental study took place in a corporation of the furniture industry. The results on cellular manufacturing and production flow analysis show that this methodology was able to reduce material handling time, setup time and throughput time. In addition, a new cellular layout was achieved.
Keywords
Cellular layout , production flow analysis, production planning, job shop
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