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| 9.28 MB | Adobe PDF |
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Advisor(s)
Abstract(s)
O ponto de partida para o trabalho é o facto de uma das grandes preocupações das indústrias, no seio do mercado competitivo, ser a procura por uma maior eficiência. O trabalho proposto tem como objetivo melhorar a eficiência de uma linha de produção de um novo projeto, o que suscita um conjunto de questões de investigação. De forma a responder às questões de investigação é desenvolvida uma revisão bibliográfica que possibilita compreender a existência de metodologias, conceitos e ferramentas como, o lean manufacturing, o balanceamento de linhas, o standard work e o kaizen, que são, habitualmente, utilizados quando o objetivo é melhorar a eficiência. Após a revisão bibliográfica, o foco do trabalho é orientado para a linha AA31, onde são compreendidas as operações desenvolvidas, os produtos fabricados e a situação inicial da linha. A compreensão da situação inicial da linha é realizada através, do cálculo da eficiência e da percentagem de sucata, do estudo do fluxo produtivo, do levantamento dos tempos das atividades e do cálculo do takt time (TT), do work content (WC) e do número mínimo de postos de trabalho (N). Através de uma 1ª iteração foram identificados desperdícios e implementadas ações de melhoria para os eliminar/reduzir. As ações de melhoria realizadas são, a implementação de ações 6S, a resolução de problemas técnicos, o balanceamento das linhas e a aplicação do standard work. Após a 1ª iteração, os resultados são analisados e é desenvolvida uma 2ª iteração, que segue os parâmetros da primeira. Com o trabalho finalizado, os resultados e os métodos de trabalho são discutidos, concluindo-se, relativamente ao sucesso e à importância do trabalho desenvolvido. O sucesso do trabalho pode ser resumido através, do aumento de 22% do valor da eficiência, da redução de 6,9% na percentagem de sucata mensal e do aumento de 21,7% no valor do OEE.
The starting point for the work is the fact that one of the highest concerns of industries, within the competitive market, is the search for better efficiency. The proposed work aims to improve the efficiency of a production line of a new project, which raises a set of research questions. To answer the research questions a bibliographic review is developed which allows to realize that there are methodologies, concepts, and tools as, lean manufacturing, lines balancing, standard work, and kaizen that are commonly used when the target is improve efficiency. After the bibliographic review, the focus of the work was to line AA31, where the activities developed, the products manufactured, and the initial situation of the line are understood. The initial situation of the line is studied through the calculation of the efficiency and the percentage of scrap, of the study of the production flow, through the analysis of the activities time and of the calculation of the takt time (TT), of the work content (WC) and the minimum number of workstations (N). In a 1st iteration, waste was identified, and improvement actions were implemented to eliminate/reduce it. The improvement actions are the implementation of the 6S action, the resolution of technical problems, the balancing of the lines and the implementation of the standard work. After the 1st iteration, the results are analyzed, and a 2nd iteration is developed following the 1st iterations parameters. With the work finished, the results and working methods are discussed, concluding, about the success and importance of the work developed. The success of the work can be summarized by a 22% increase in the efficiency value, 6,9% reduction in the monthly scrap percentage and a 21,7% increase in the OEE value.
The starting point for the work is the fact that one of the highest concerns of industries, within the competitive market, is the search for better efficiency. The proposed work aims to improve the efficiency of a production line of a new project, which raises a set of research questions. To answer the research questions a bibliographic review is developed which allows to realize that there are methodologies, concepts, and tools as, lean manufacturing, lines balancing, standard work, and kaizen that are commonly used when the target is improve efficiency. After the bibliographic review, the focus of the work was to line AA31, where the activities developed, the products manufactured, and the initial situation of the line are understood. The initial situation of the line is studied through the calculation of the efficiency and the percentage of scrap, of the study of the production flow, through the analysis of the activities time and of the calculation of the takt time (TT), of the work content (WC) and the minimum number of workstations (N). In a 1st iteration, waste was identified, and improvement actions were implemented to eliminate/reduce it. The improvement actions are the implementation of the 6S action, the resolution of technical problems, the balancing of the lines and the implementation of the standard work. After the 1st iteration, the results are analyzed, and a 2nd iteration is developed following the 1st iterations parameters. With the work finished, the results and working methods are discussed, concluding, about the success and importance of the work developed. The success of the work can be summarized by a 22% increase in the efficiency value, 6,9% reduction in the monthly scrap percentage and a 21,7% increase in the OEE value.
Description
Keywords
Lean Melhoria Balanceamento Standard Eficiência Improvement Balancing Standard Efficiency