Análise dos sinais de vibrações ao longo da vida da ferramenta no processo de torneamento do aço VTMPLUS

Abstract

This study aims the analyze the vibrations signals from throughout the tool life in the steel VTMPLUS turning process. Tool wear causes variations in the behavior of the forces system and the audio signal. The tests performed to obtain data will employ equipment such as a microphone, accelerometer, impact hammer, piezoelectric platform and charge amplifier. From the data generated by the measurement during the process, analyses were performed via MatLab and DAQExpress software. The results showed that there is perception in the variation of the frequencies picked up during wear during the process, and can be characterized by their variation from the analysis by fast Fourrier transform and effective value capability. Evaluating the system after wear there was an equalization of the peak amplitude at the natural frequency of the system. Based on the accuracy of the results, it was shown that for tests with more precise data the use of force analysis brings better results, but with greater complications of installation and cost, and therefore the audio capture system by smartphone appears as a more precise solution, but economically viable.