| Name: | Description: | Size: | Format: | |
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| Documento principal | 20.48 MB | Adobe PDF |
Abstract(s)
As molas de lâmina são elementos geralmente utilizados em suspensões de veículos pesados, pois permitem uma melhor distribuição de força ao longo de todo o chassis do veículo. O processo de fabrico destes elementos tem sido cada vez mais automatizado, face às dimensões e peso das molas. No entanto, estas tecnologias de conformação mecânica, envolvem algumas dificuldades e é usual que, na sua forma final, as molas surjam com algumas deformações (empeno), sendo a deformação longitudinal a mais crítica. Estas situações influenciam a fiabilidade e o desempenho das molas, pelo que é importante efectuar as correcções necessárias, de modo a que a montagem final das molas vá ao encontro das elevadas exigências de qualidade. Não existido na indústria sistemas automatizados para efectuar este processo de análise e de correcção, sendo ele actualmente realizado de forma manual, surge a necessidade de criar uma máquina que analise as deformações das molas e que, posteriormente, proceda à sua correcção de forma totalmente automatizada. Nesta dissertação é apresentado o projecto de desenvolvimento e de dimensionamento dos vários dispositivos e equipamentos que constituem um sistema com estas características, sendo apresentadas algumas soluções inovadoras tanto no que toca à análise como à correcção de deformações em molas de lâmina.
Leaf springs are generally used in suspension systems of large motor vehicles, since it allows an enhanced force distribution along the vehicle’s chassis. The production process of these elements has been each time more automatized given the dimensions and weight of the leaf springs. However, these mechanical technologies imply some difficulties and it is usual that leaf springs, in its final form, come out with some deformations, of which the longitudinal deformation is the most critical. These situations influence the leaf spring’s reliability and performance therefore it is important to perform the necessary corrections, so that the final assemblies of the leaf springs reach out the quality demands. In fact, there are no automatized systems in the industry to accomplish this correction process. As nowadays this is done manually, it is necessary to create a machine that analyze the deformations and then correct them in a totally automatized way. In this thesis it is presented the project of development and dimensioning of the distinct devices and equipments that compose a system with these characteristics, in which it is presented some innovator solutions in respect to the analysis and the correction of leaf spring’s deformations.
Leaf springs are generally used in suspension systems of large motor vehicles, since it allows an enhanced force distribution along the vehicle’s chassis. The production process of these elements has been each time more automatized given the dimensions and weight of the leaf springs. However, these mechanical technologies imply some difficulties and it is usual that leaf springs, in its final form, come out with some deformations, of which the longitudinal deformation is the most critical. These situations influence the leaf spring’s reliability and performance therefore it is important to perform the necessary corrections, so that the final assemblies of the leaf springs reach out the quality demands. In fact, there are no automatized systems in the industry to accomplish this correction process. As nowadays this is done manually, it is necessary to create a machine that analyze the deformations and then correct them in a totally automatized way. In this thesis it is presented the project of development and dimensioning of the distinct devices and equipments that compose a system with these characteristics, in which it is presented some innovator solutions in respect to the analysis and the correction of leaf spring’s deformations.
Description
Keywords
Molas de lâmina Molas de lâmina - Fabrico Molas de lâmina - Deformações Molas de lâmina - Automação