Affiliation:
1. RMIT University
2. Nanjing University of Aeronautics and Astronautics
Abstract
Chatter is a complex phenomenon characterized by unstable, chaotic motions of the tool
and by strong anomalous fluctuations of cutting forces. The situation becomes more serious in the
milling of titanium alloys because of their low Young modulus and extended elastic behaviour. This
paper presents an online chatter detection system based on the analysis of cutting forces, which is
one of the integrated modules of a multi-sensor chatter detection system consisting acoustic and
acceleration sensors. The cutting force is transformed into frequency domain by applying Fast
Fourier Transform (FFT). Chatter frequency is identified in the frequency domain by comparing its
power spectrum with predefined threshold. Experiments were carried out to validate the mythology.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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