| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 49.22 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
A procura constante do aumento de produtividade leva a que cada instante se procure otimizar os processos de fabrico existentes e a procura de novos métodos mais eficazes. Para que se seja bem-sucedido é vital um profundo e cada vez maior conhecimento dos processos que se tem em mão. Este trabalho tem como objetivo aumentar o entendimento do processo de fabrico de corte e estampagem em punçonadora, de modo a procurar entender os fenómenos que ocorrem durante a execução destes processos, de modo a procurar soluções para melhorar o acabamento das peças resultantes destes processos, e a produtividade. Para tal foi o utilizado um software de Método de Elementos Finitos de modo a simular vários cortes e estampagens, e assim entender os fenómenos ocorridos ao longo do corte e várias estampagens de diferentes formas. Foi então possível entender que existe um compromisso entre o acabamento e a longevidade das ferramentas, e que diferentes tipos de geometrias dos punções permitem alterar as forças existentes ao longo de cada processo, e assim esforçar mais ou menos a punçonadora.
The constant search for increased productivity means that every moment we try to optimize the existing manufacturing processes and the search for new and more efficient methods. To be successful, a deep and growing knowledge of the processes at hand is vital. The aim of this work is to increase the understanding of the cutting and punching process in order to understand the phenomena that occur during the execution of these processes, in order to find solutions to improve the finishing of the parts resulting from these processes, and productivity. For this purpose a Finite Element Method software was used in order to simulate various cuts and stamping, and thus to understand the phenomena that occurs along the cut and several stamping in different ways. It was then possible to understand that there is a compromise between the finish and the longevity of the tools, and that different types of punch geometries allow to change the forces existing throughout each process, and thus to load more or less the punch.
The constant search for increased productivity means that every moment we try to optimize the existing manufacturing processes and the search for new and more efficient methods. To be successful, a deep and growing knowledge of the processes at hand is vital. The aim of this work is to increase the understanding of the cutting and punching process in order to understand the phenomena that occur during the execution of these processes, in order to find solutions to improve the finishing of the parts resulting from these processes, and productivity. For this purpose a Finite Element Method software was used in order to simulate various cuts and stamping, and thus to understand the phenomena that occurs along the cut and several stamping in different ways. It was then possible to understand that there is a compromise between the finish and the longevity of the tools, and that different types of punch geometries allow to change the forces existing throughout each process, and thus to load more or less the punch.
Description
Keywords
Punçonadora Corte Estampagem Análise numérica Punching Cutting Stamping Numerical analysis