Investigation of Effect of Machine Tool Vibration over the Surface Finish by Wavelet Transforms Technique

摘要

Surface roughness of machined component is very significant from the functional point of view of machined component. The surface finish is influenced by many factors such as machining condition, tool geometry and machining dynamics. There are numerous surface roughness parameters that are used to characterize the surface roughness in terms of R_a, R_t and Rz by surface roughness measuring instrument. The analytical tools like Fast Fourier transform (FFT) and Wavelet transform (WFT) were currently used to correlate the surface finish more comprehensively. In this present work, attempts were made to study the influence of machine tool vibration on the surface finish in a turning operation. The influence of vibration on the surface can be studied by comparing the signals of surface and vibration using wavelet transform. The signal from machine tool vibration was captured by Digital storage oscilloscope through sensor and charge coupled amplifier in an Experimental setup. The data collected were analysed using Wavelet analysis in Matlab software. Significant correlation was found and recorded from the statistical analysis.