Análise das dimensões de um dispositivo para montagem de carroceria de automóveis

In the assembly lines present in automotive manufacturing plants, mechanical devices for body assembly play a fundamental role in ensuring precision and high productivity in production lines. This study analyzed the main dimensions of the components of a device for automotive body assembly, which uses standardizations according to the NAAMS standard. The work began with a device modeled in software, followed by a structural analysis using the Finite Element Method, evaluating stresses and displacements. Subsequently, an electronic questionnaire was conducted with professionals in the areas of design, manufacturing, assembly, and structural analysis, with the aim of confirming the relevance of using standardized dimensions according to NAAMS, regarding the thickness of the components and the fastening elements. The quantitative results showed that the device is over-dimensioned, presenting equivalent stresses and displacements well below the critical limits, ensuring high robustness even under established overload conditions. The qualitative results of the questionnaire showed a preference for the use of carbon steel and standardized dimensions, highlighting advantages such as strength, weldability, ease of repair, ease of construction, and convenience for device design. Thus, it can be concluded that the standardized dimensions established by NAAMS, despite the over-dimensioning identified in the structural analysis, are technically adequate and justify their use in the automotive industry, as they contribute to productive and design efficiency, as well as operational reliability of the assembly devices.