Evaluation of the Harmonic Locus of the Milling Technological System Based on the Analysis of the Vibro-Acoustic Signal

Abstract

© 2020, Springer Nature Switzerland AG. The article deals with the use of acoustic signals of noise caused by vibrations of the technological system, consisting of technological equipment, tools and blanks, in order to obtain the harmonic locus of the dynamic system of equipment. Vibrations are one of the factors that prevent productivity increase in milling machines. Therefore, vibrations prevent the efficient use of such machines. For effective use of technological systems, it is necessary to determine experimentally the amplitude-phase frequency response. The analysis of vibroacoustic signals is the easiest way to obtain such a characteristic experimentally. The article gives the principles of mathematical processing of vibroacoustic signals, which allows obtaining the required characteristics. The experimental part is presented, which describes the acquisition of signals during the processing of the workpiece on the machine and obtaining its amplitude phase-frequency characteristics. The practical application of this technique for the analysis of the dynamic stability of the technological system and for the selection of optimal cutting conditions is considered.