Classification method of elements that cause the run-up period in changeover / Metodo de classificação dos elementos do periodo da retomada de produção

AUTOR(ES)

Miguel Sugai

DATA DE PUBLICAÇÃO

2007

RESUMO

The setup time reduction methodologies gained importance when the industry was challenged to produce in small lots and high variety with the same production system. In the historical context, SMED methodology, elaborated by Shigeo Shingo, a Toyota Motors Company consultant, deserves special attention. His methodology has given prominent steps in terms of evaluation and technical concepts regarding setup time reduction methodologies. Today, the use of the SMED in the Brazilian industries has become commonplace. However, the concern to make improvements to achieve full recuperation of production capacity after setup has arisen. This run-up period has not received the necessary attention, leading to big losses in some production systems. This work is a historical review and a presentation of the state-of-the-art of setup and changeover concepts and, its main contribution, is proposing a classification method of the elements that cause the run-up period. Starting from the primary causes of Ishikawa´s diagram, the classification is based on the information from bibliographical revision and from the multiple case studies (individual machine, cellular arrangement and production line) developed in the metal-mechanical industry. The final result is the Classification Method of Element that Cause the Run-up period in which each causal element is evaluated according to the categories “instability generation”, “intermediate” and “domain in the run-up period”. This Classification Method has been tested in other two case studies to validate the concept and it received the approval in cases of discrete production, although it also contains relevant information for other productive systems.

ASSUNTO(S)

industrial efficiency metodologia - classificação engenharia industrial eficiencia industrial setup analysis and classification sheet ru-up period manufacturing engineering industrial engineering engenharia de produção changeover

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