Avaliação teórica e experimental comparativa entre um conjunto redutor e engrenagens concorrente importado com um modelo equivalente de referência nacional

Abstract

The work presented the development of a study related to gear speed reducers, and made an analysis of comparative results between two reducers of the same class manufactured by two different manufacturers, an imported competitor reducer and a national reference. The most evident characteristic of the imported competitive reducer, and which motivated this work, was the polymeric housing. Analytical calculations were performed to evaluate the individual parameters of the machine elements, gears, bearings and shafts available in classical literature in order to evaluate the mechanical characteristics and compare them with the characteristics existing in the reference gearbox. The performance of the set requires the performance of bench tests that are already standardized within the company to evaluate its own gearboxes. Both gearboxes have passed all tests performed. Despite the polymeric housing, the competitor gear unit achieved operating temperature results similar to the reference gear unit. The results of safety coefficients of the machine elements also showed the possibility of greater reduction in manufacturing costs compared to the reference gearbox. Through the test results, it was possible to evaluate the data and propose design improvements both in the concurrent gearbox and in the reference gearbox, through the positive and negative points of each one. [resumo fornecido pelo autor]