Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
CORRELATION BETWEEN MECHANICAL VIBRATION AND WORKPIECE SURFACE QUALITY IN THE GRINDING PROCESS
Submission Author:
Luciano Fernandes , MG
Co-Authors:
Luciano Fernandes, Tobias Anderson Guimarães, RAPHAEL SILVA LINS
Presenter: RAPHAEL SILVA LINS
doi://10.26678/ABCM.COBEM2023.COB2023-0139
Abstract
Grinding is a machining process that produces components with high-quality surface finishing. The mechanical vibration and machining parameters, such as, feed and ratio between wheel and workpiece velocity have also influence on the surface roughness of the workpiece in the grinding process. In this context, the objective of this work is to analyze the influence of the feed and workpiece velocity on the mechanical vibration and surface roughness of the product generated by the grinding process. For this analysis, the grinding process of a shaft was monitored with the feed of 0.15 mm/rotation and 0.374 mm/rotation in the ratio velocity of 15 and 35 - 150 rpm and 375 rpm respectively. During the machining, the mechanical vibration was measured with two accelerometers mounted on the machine tool. In the analysis the vibration data, it was used the Power Spectrum (PS) and the Continuous Wavelet Transform (CWT) applied to the signals in the time domain. After the signal processing, the PS and CWT of the vibration signals were correlated with roughness parameters Ra, Rz and Rt used for evaluating of the surface finish of the workpieces. The results proved that CWT of vibration signals had a good correlation with the roughness parameter Rt, hence, it would be possible to monitor the quality surface finish in the grinding process by using this signal processing tool.
Keywords
Continuous wavelet transform, External cylindrical grinding, Power Spectrum, surface finishing, Vibration signals
