Projeto Integrado de Engenharia Mecânica Dimensionamento de um Eixo-Árvore
Por: Ednelso245 • 28/4/2018 • 3.976 Palavras (16 Páginas) • 358 Visualizações
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Abstraat
The design of a loom (mechanical) machine is based on meeting the needs of its application and on the expectation of its performance, in addition to considering the best cost-benefit relationship among the viable material and process options for its manufacture.
The specifications elaborated with the use of calculations, projections and analysis of the working conditions define the material options; However, the choice of the manufacturing process usually does not follow a clearly defined procedure because of the specificities involving the various existing processes and the lack of engineering criteria to evaluate its applicability to obtain a certain projected component. In this way, the project is usually exposed to the various influences on the choice of the manufacturing process that can impose technical limitations on it.
This fact occurs mainly when carbon and low alloy steels are indicated for the components which, in this case, can be manufactured by various processes. Doubts are even greater when the decision to manufacture them oscillates between smelting and forging processes, traditional competitors, surrounded by innumerable variables, whose technologies are usually little known to designers.
In this context, this research presents the productive aspects of both processes for the use of a good mechanical component, which was developed from requirements established at the beginning of the project.
Initial data were collected and, from these, all necessary sizing calculations were done and the final mechanical design drawing was done, based on the values of the components present in the equipment and based on the knowledge acquired during the course of mechanical engineering ( Mechanical Integration Project).
Índice
Pag.
Agradecimentos ------------------------------------------------------------------------------------ 3
Resumo --------------------------------------------------------------- ------------------------------ 4
Abstraat ----------------------------------------------------------------------------------------------- 5
Lista de Tabelas ----------------------------------------- ------------------------------------------- 7
Lista de Gráficos ------------------------------------------------------- ---------------------------- 7
Simbologia ---------------------------------------------------------------------------------------------7
Objetivos ---------------------------------------------------------------- -------------------------------8
Justificativa - ----------------------------------------------------------------------------------------- 9
Introdução- -------------------------------------------------------------------------------------------- 10
Projeto Solicitado- -----------------------------------------------------------------------------------11
Generalidades - --------------------------------------------------------------------------------------- 12
Apresentação de Cálculos e Resultados -----------------------------------------------------20
Conclusão --------------------------------------------------------------------------------------------- 36
Bibliografia -------------------------------------------------------------------- ------------------------ 37
Anexos --------------------------------------------------------------------------------------------------- 39
Lista de Tabelas
Tabela nº 1 - Representação do momento fletor nos pontos ------------------------ 23
Tabela nº 2 - Resumo dos cálculos, na conceção do projeto ------------------------- 34
Tabela nº 3 - Resumo das constantes dadas e calculadas ----------------------------- 35
Lista de Gráficos
Gráfico nº 1 - Representação Gráfica do Esforço Transverso-------------------------- 23
Gráfico nº 2 - Representação Gráfica do Momento Fletor ------------------------------ 23
Simbologia
Factor de serviço
n
Factor de acabamento superficial
Ka
Fator de tamanho
Kb
Fator de confiabilidade
Kc
Fator de temperatura
Kd
Fator de concentraçao de tensoes
Se
Fatores de correção da resistência a fadiga
Ke
Calculo do limite de resistência a fadiga do material
Sy
Mpa
Limite de resistencia
Sut
Mpa
Tensão
Τm
Tensão
σa
[pic 2]
σa
[pic 3]
Τa
diametro
d
m
Angulos
¥
Rad
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