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Contributo para a análise do toleranciamento em SolidWorks™
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A presente dissertação tem como objetivo analisar e compreender o funcionamento dos
recursos de toleranciamento dimensional do software SolidWorks, contribuindo com docu mentação para a temática.
Este trabalho surge devido à inexistência de documentação acerca dos módulos de
toleranciamento e análise de tolerâncias deste software. A ausência desta documentação,
aliada com a crescente adoção do uso de programas de CAD para o projeto de peças e
sistemas mecânicos, aumenta a possibilidade da realização de um mau toleranciamento.
As consequências de um mau toleranciamento podem ser desastrosas, especialmente a
nível monetário, sendo importante a sua prevenção.
Numa primeira fase, foi necessário realizar um levantamento das funcionalidades
de cotagem e toleranciamento. Feito esse levantamento, abordou-se a configuração dos
parâmetros que os caracterizam, seguido de uma breve demonstração da sua utilização.
Na fase seguinte, procurou-se verificar de que modo a escolha de diferentes datums e
métodos de modelação de peças iria influenciar os resultados. Para tal, recorreu-se a um
caso de estudo simples.
Na terceira fase, recorrendo a um novo caso de estudo, comparou-se as tolerâncias
obtidas com a funcionalidade automática e as tolerâncias obtidas via uma síntese de
tolerâncias. Esta comparação foi seguida de uma análise com recurso ao TolAnalyst.
Do trabalho realizado, e tendo por base os ensinamentos retirados das fases anteriores,
resultou uma metodologia que visa garantir a correta utilização destas funcionalidades.
Foi possível ainda concluir que estas funcionalidades carecem sempre de uma cotagem e
análise funcional, pois o SolidWorks não contempla esta possibilidade. O software dispõe
de funcionalidades interessantes que permitem auxiliar o projetista, tendo um papel
complementar na atribuição de cotas e tolerâncias.
The main goal of this thesis is to analyze and understand the way how dimension tol erances are handled by SolidWorks, in order to contribute with documentation for the subject. This work was developed in order to suppress the lack of adequate documentation about the usage of the dimensioning and tolerancing tools, available in SolidWorks. The lack of this documentation, combined with the ever-growing usage of CAD softwares to design might lead to catastrophic results, especially moneywise. That being said, it’s important to prevent such thing from happening. The first step was to establish what tools were at our disposal. After establishing the tools, it was necessary to understand the settings behind such tools, followed by a quick demonstration. The second step consisted in finding out how did the datum choices and modelling methods influenced the results. This was achieved by means of a simple case study. The third step, was to compare the tolerancing obtained by the automatic tool and the tolerancing obtained by means of a tolerance synthesis, followed by an analysis using TolAnalyst. To do so, it was used another case study. This thesis resulted in developments regarding the documentation needed for a cor rect usage of the DimXpert tools. In order to compile all the information obtained during this dissertation, a methodology was developed, using flowcharts. This methodology aims to provide the user with important knowledge, to make good use of the tools available. Despite being helpful tools, they will still need to be combined with a functional analysis. SolidWorks helps the user by providing him useful tools to assist with the dimensioning and tolerancing of parts and mechanical systems.
The main goal of this thesis is to analyze and understand the way how dimension tol erances are handled by SolidWorks, in order to contribute with documentation for the subject. This work was developed in order to suppress the lack of adequate documentation about the usage of the dimensioning and tolerancing tools, available in SolidWorks. The lack of this documentation, combined with the ever-growing usage of CAD softwares to design might lead to catastrophic results, especially moneywise. That being said, it’s important to prevent such thing from happening. The first step was to establish what tools were at our disposal. After establishing the tools, it was necessary to understand the settings behind such tools, followed by a quick demonstration. The second step consisted in finding out how did the datum choices and modelling methods influenced the results. This was achieved by means of a simple case study. The third step, was to compare the tolerancing obtained by the automatic tool and the tolerancing obtained by means of a tolerance synthesis, followed by an analysis using TolAnalyst. To do so, it was used another case study. This thesis resulted in developments regarding the documentation needed for a cor rect usage of the DimXpert tools. In order to compile all the information obtained during this dissertation, a methodology was developed, using flowcharts. This methodology aims to provide the user with important knowledge, to make good use of the tools available. Despite being helpful tools, they will still need to be combined with a functional analysis. SolidWorks helps the user by providing him useful tools to assist with the dimensioning and tolerancing of parts and mechanical systems.
Descrição
Palavras-chave
SolidWorks Toleranciamento Análise de tolerâncias Cotagem DimX-pert TolAnalyst