Projeto e construção de redutor mecânico de velocidades para fins didáticos.

Abstract

This work details the fabrication and design of a didactic speed reducer (rotations), which has at least nine gear combinations, and consequently several reduction or multiplication factors, as it also acts as a speed multiplier in some of these combinations. These combinations serve precisely, in the device, as a study and practical demonstration of the operation of mechanical reducers, crucial for industry in virtually all sectors. In this device, most of the main parts such as gears, pinions, and 1020 steel sheets for the structure were reused, either obsolete or worn out for their original systems or parts. The entire project was developed in 3D mechanical drawings using Solid Edge software, freely available for engineering students and professors, and simulations and assemblies were performed, both in software and in real-world applications, clearly demonstrating the operation of the device, which was one of the project's objectives. A robust theoretical foundation was presented in terms of varieties and transmission elements, yet simple to understand, such as the simplified and concise equations, which are part of concepts well explored in the classroom regarding gear ratios. It was possible to see how traditional manufacturing processes can be perfectly combined with new processes such as 3D printing to manufacture highly precise and symmetrical mechanical systems.