Abstract
Cutting chatter is a violent self-excited vibration between a tool and a workpiece. Its negative effects mainly include poor surface quality, inferior dimensional accuracy, disproportionate tool wear or tool breakage, and excessive noise. Therefore, early recognition and online suppression of chatter vibration are necessary. This paper proposes a novel synthetic criterion (SC) for early chatter recognition. The proposed SC integrates standard deviation (STD) and one-step autocorrelation function (OSAF). Moreover, this paper revised the fast algorithm of OSAF. We can quantitatively divide a chatter vibration signal into three stages, which are stable stage, transition stage and chatter stage according to the SC. Compared with STD, the SC can improve the reliability of chatter recognition and the threshold of SC is not sensitive to variable cutting conditions. This paper presents an original algorithm of SC and its fast algorithm in detail. The fast algorithm of SC in this paper improves the computation efficiency compared with the original algorithm of SC. To validate the effectiveness of the proposed SC, a series of milling experiments were conducted under different cutting conditions. In these experiments, the vibration signals were acquired by two accelerometers mounted on the spindle house. The experimental results showed that the proposed SC could effectively recognize chatter vibration at an early stage of chatter vibration, which saved valuable time for online chatter suppression.
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Jia, G., Wu, B., Hu, Y. et al. A synthetic criterion for early recognition of cutting chatter. Sci. China Technol. Sci. 56, 2870–2876 (2013). https://doi.org/10.1007/s11431-013-5360-9
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DOI: https://doi.org/10.1007/s11431-013-5360-9