Análise de vibrações no torneamento externo de peças longas

Abstract

The purpose of this study is to conduct an analysis of vibrations during the external turning process, using workpieces with a high length-to-diameter ratio. During machining, it is common for workpieces with a considerable overhang length to be prone to generating regenerative vibrations, which can compromise the progress of the process. For data collection, tests were conducted using equipment such as a smartphone acting as a microphone and the Phyphox software for signal acquisition. This data was employed in the development of a computational stability chart. The material machined in the experiments was the aluminum alloy 6351-T6. MATLAB tools were used for data acquisition, simulation, and analysis of the results. A comparison was made between the results obtained in the tests and the stability chart obtained in the simulations. The obtained results showed a discrepancy, however, as the relationship between length and diameter increases, a greater convergence between them is observed.