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Abstract(s)
Esta dissertação foi desenvolvida na Continental Mabor, tendo como tema a melhoria de atividades de manutenção realizadas em máquinas de construção de pneus de grandes dimensões, instaladas recentemente. A metodologia escolhida baseou-se na filosofia Total Productive Maintenance (TPM), e também teve em conta aspetos de gestão da qualidade numa empresa. Foram analisados os principais problemas das máquinas alvo do estudo, desde as avarias mais frequentes até às dificuldades técnicas de realização de ações de manutenção. Através da análise de documentação existente e do conhecimento interno, foram criadas, com alterações pertinentes ao método de trabalho, planos de manutenção preventiva e ações de inspeção do estado de alinhamento das máquinas. No fim do estudo, foi possível reter conhecimento dos técnicos mais experientes em instruções de trabalho, que podem ser usadas para ações de formação futuras. Foi conseguido uma diminuição de 31% na duração da ação de inspeção do estado de alinhamento, o que permitiu um aumento de disponibilidade significativa. Além disso, foi proposto um método alternativo, não invasivo, de controlo do estado de alinhamento através da criação de cartas de controlo.
This dissertation was developed at Continental Mabor, under the subject of the improvement of maintenance activities conducted on recently installed equipment for the construction of large tires. The chosen method was based on the total productive maintenance philosophy (TPM) and considered quality management aspects. The equipment's main problems were studied, from the most frequent breakdowns to the technical difficulties of maintenance activities. By analyzing existing documents, internal knowledge, and changes to work methods, preventive maintenance plans, and machine check tolerance action were created. At the end of the study, it was possible to retain the knowledge of the most experienced technicians, which can be used for future training actions and a 31% duration decrease in the machine tolerance check activities, which lead to a significant increase in equipment availability. Also, an alternative non-invasive method of controlling the equipment's alignment status was proposed by creating control charts.
This dissertation was developed at Continental Mabor, under the subject of the improvement of maintenance activities conducted on recently installed equipment for the construction of large tires. The chosen method was based on the total productive maintenance philosophy (TPM) and considered quality management aspects. The equipment's main problems were studied, from the most frequent breakdowns to the technical difficulties of maintenance activities. By analyzing existing documents, internal knowledge, and changes to work methods, preventive maintenance plans, and machine check tolerance action were created. At the end of the study, it was possible to retain the knowledge of the most experienced technicians, which can be used for future training actions and a 31% duration decrease in the machine tolerance check activities, which lead to a significant increase in equipment availability. Also, an alternative non-invasive method of controlling the equipment's alignment status was proposed by creating control charts.
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Keywords
SMED Manutenção TPM Tolerância de máquina Qualidade Maintenance Machine tolerance check Quality