Estudo de melhoria da eficiência global do equipamento em uma linha de produção utilizando ferramentas de Lean Six Sigma

Abstract

With the advent of economic globalization, the market has become increasingly competitive demanding high quality products at a reduced cost. Thus, a highly reliable process that has few failures and produces products within specification has become essential for any production line. In this context, several methodologies emerged and began to be implemented in companies. Among them is Total Productive Maintenance (TPM), which seeks to eliminate machine downtime and product defects, and Lean Manufacturing, which seeks to reduce production costs and increase quality and delivery speed. The present work aims to associate aspects from both methodologies, proposing improvements for a medical equipment production line in order to increase the Overall Equipment Efficiency (OEE) index using Lean Six Sigma methodology tools. The Six Sigma methodology applied was DMAIC, suitable for product and process improvement. For the Define stage, the project charter and process map tools were used. For the Measure phase, the Pareto Diagram and the Chart of Individual Values. As for the Analysis, the Ishikawa diagram was used. And, finally, the prioritization matrix and the 5W2H tool were selected to elaborate the action plan in the Improve stage. As a result, the machines and failures with the greatest impact on the OEE were identified, the possible causes were listed and classified and, for those indicated as critical, an action plan was proposed.