| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 17.71 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
Devido aos avanços tecnológicos e à maior exigência por parte dos consumidores, as
empresas sentem-se obrigadas a encontrar estratégias para tornar os seus processos
mais flexíveis, eficazes e eficientes, para que seja possível dar resposta às necessidades
do mercado. A produção diversificada e em baixos volumes é uma das maiores
dificuldades enfrentadas pelas empresas, pois origina muitas mudanças de setup o que
resulta no aumento do custo e do tempo de produção, uma vez que não acrescenta
qualquer tipo de valor para a empresa.
A assemblagem é um dos processos mais usados na indústria Portuguesa, na qual se
incluiu métodos que vão desde o aperto de um parafuso até à montagem de componentes
eletrónicos.
A HFA já é conhecedora do Pensamento Lean e, mais do que isso, já implementou e
utiliza algumas das ferramentas. A presente dissertação, teve como objetivo primordial
a implementação da metodologia SMED (Single Minute Exchange of Die) na área SMD
(Surface Mount Device) para a otimização do seu processo produtivo. A linha de
produção, na qual foi implementada a metodologia, foi selecionada por ser aquela que a
empresa identificou como tendo o tempo de setup mais elevado, e na qual uma
intervenção para otimizar o tempo de produção era prioritária. Nesta linha as operações
de produção consistem na assemblagem de componentes de montagem superficial
(SMDs) em placas de circuito impresso (PCBs).
Os resultados obtidos foram satisfatórios, tendo ocorrido uma redução nos tempos de
setup, no entanto não foram propriamente os esperados. Esperava-se uma redução
maior das tarefas internas e a eliminação de muitas outras, mas devido ao pouco tempo
não foi possível. Conseguiu-se eliminar, ainda assim, um número considerável de
operações, mas a conversão de tarefas internas em externas foi muito reduzida, tendo
em conta o número total de tarefas. Mesmo assim, ganhou-se cerca de uma hora, com a
conversão e eliminação de tarefas.
Due to technological advances and greater demand from consumers, companies feel obliged to find strategies to make their processes more flexible, effective, and efficient, in order to respond to market necessities. Diversified and low-volume production is one of the biggest difficulties faced by companies, as it causes many changes in setup, which results in increased cost and production time since it does not add any type of value to the company. The assembly is one of the most used processes in the Portuguese industry, which included methods ranging from the tightening of a screw to the assembly of electronic components. HFA is already knowledgeable of the Lean Thinking, it has already implemented and uses some of his tools. The main objective of this dissertation was to implement the SMED (Single Minute Exchange of Die) methodology in the SMD (Surface Mount Device) area to optimize your production process. The production line, in which the methodology was implemented, was selected because it was the one that the company identified as having the highest setup time, and in which an intervention to optimize production time was a priority. In this line, production operations consist of assembling surface mount devices (SMDs) on printed circuit boards (PCBs). The results obtained were satisfactory, with a reduction in setup times, however, they were not exactly as expected. A gross reduction in internal tasks and the elimination of many others were expected, but due to the short time, it was not possible. It was still possible to eliminate a considerable number, but the conversion of internal to external tasks was very small, considering the total number of tasks. Even so, it took about 1 hour to convert and eliminate tasks.
Due to technological advances and greater demand from consumers, companies feel obliged to find strategies to make their processes more flexible, effective, and efficient, in order to respond to market necessities. Diversified and low-volume production is one of the biggest difficulties faced by companies, as it causes many changes in setup, which results in increased cost and production time since it does not add any type of value to the company. The assembly is one of the most used processes in the Portuguese industry, which included methods ranging from the tightening of a screw to the assembly of electronic components. HFA is already knowledgeable of the Lean Thinking, it has already implemented and uses some of his tools. The main objective of this dissertation was to implement the SMED (Single Minute Exchange of Die) methodology in the SMD (Surface Mount Device) area to optimize your production process. The production line, in which the methodology was implemented, was selected because it was the one that the company identified as having the highest setup time, and in which an intervention to optimize production time was a priority. In this line, production operations consist of assembling surface mount devices (SMDs) on printed circuit boards (PCBs). The results obtained were satisfactory, with a reduction in setup times, however, they were not exactly as expected. A gross reduction in internal tasks and the elimination of many others were expected, but due to the short time, it was not possible. It was still possible to eliminate a considerable number, but the conversion of internal to external tasks was very small, considering the total number of tasks. Even so, it took about 1 hour to convert and eliminate tasks.
Description
Keywords
Componentes Eletrónicos Lean Manufacturing Melhoria Contínua Metodologia Smed Placas de Circuito Impresso Setup Smd (Surface Mount Device)