Estudo das caracteristicas dos rebites solidos cabeça escareada a 120°, instalados com interferencia, no processo produtivo Embraer
AUTOR(ES)
Warner Brunelli Depre
DATA DE PUBLICAÇÃO
2002
RESUMO
The current riveting process of EMBRAER is not considered robust, but a process under statistical and previsible control. Some works were developed with success to guarantee the process stability, that nowadays it presents low rates of defects. However, due to the inherent variability to each flush hole operation, riveting and the order of magnitude of the tolerances involved in the process, a small alteration in the characteristics of the rivets affects considerably the quality of the riveting and, consequently, the quality of the EMBRAER product. To guarantee the stability of the riveting process, it was analyzed the influence of the production rivets parameters of the current supplier in the installation characteristics. The work inc1uded from value engineering and dimensional and metalographics measurements, until a comparative statistical rising among the main dimensions of the rivets with the tolerances limits of the specifications. The capacity (Cp) and the real capacity (Cpk) of the process of the current supplier were examined, seeking at the insert of requirements in the EMBRAER specification capable to guarantee larger control in the quality of the rivets, seeking to optimize the riveting process, to reduce costs with repairs, to guarantee the production capacity and to satisfy the requirements as for the customer s visual aspects
ASSUNTO(S)
processos de fabricação engenharia - metodos estatisticos aluminio
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=vtls000283918Documentos Relacionados
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