Results 191 to 200 of about 1,031 (236)
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Detection of the onset of chatter vibration
Journal of Sound and Vibration, 1986In a flexible manufacturing system or a fully automated machining system, the computer control system of the machine tools must be able to recognize and control the cutting states, particularly the unwanted ones. Chatter vibration being one of them, its onset needs to be detected.
Rahman, M., Ito, Y.
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Chatter detection in turning using persistent homology
Mechanical Systems and Signal Processing, 2016Abstract This paper describes a new approach for ascertaining the stability of stochastic dynamical systems in their parameter space by examining their time series using topological data analysis (TDA). We illustrate the approach using a nonlinear delayed model that describes the tool oscillations due to self-excited vibrations in turning.
Firas A. Khasawneh, Elizabeth Munch
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Beat Effect in Machining Chatter: Analysis and Detection
Journal of Manufacturing Science and Engineering, 2020Abstract In machining processes, regenerative chatter is an unstable vibration which adversely affects surface finish, cutting tools, and spindle bearings. Under some cutting conditions, the beat effect, an interference pattern between two periodical vibrations of slightly different frequencies, has been a common phenomenon where the ...
Yuxin Sun +4 more
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Development of chatter detection in milling processes
The International Journal of Advanced Manufacturing Technology, 2012The aim of this research is to develop an in-process detection of the chatter for the actual milling processes regardless of any cutting condition within the small data processing time by utilizing the dynamic cutting forces obtained during cutting. The proposed method introduces three parameters, which are calculated and obtained by taking the ratio ...
Somkiat Tangjitsitcharoen +1 more
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Early Chatter Detection using MaxEnt and SPRT
2019 6th International Conference on Control, Decision and Information Technologies (CoDIT), 2019In high-speed milling process, the early detection of chatter contains two aspects, one is the fast detection of the initial symptom of the chatter, the other is to recognize the slight chatter embedded in the noisy signal. This paper presents an online cumulative chatter detection method for high-speed milling process based on once-per-revolution ...
Yanqing Zhao +3 more
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In-Process Detection of Chatter Threshold
Journal of Engineering for Industry, 1988This investigation is an attempt to propose a method to determine the chatter threshold precisely so that a flexible manufacturing system can be materialized or a dynamic performance test criteria for a machine tool can be established. It has been found that the chatter threshold can be easily detected through the in-process measurement of the ...
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Pattern recognition for on-line chatter detection
Mechanical Systems and Signal Processing, 1988Abstract A pattern recognition strategy for on-line chatter detection was proposed and developed by analysing the acceleration signals from a milling operation. The components of the feature vectors were defined in terms of total power and dispersion of the dominant forced and chatter vibration modes extracted from linear stochastic models ...
CHO, DW, EMAN, KF
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Multisensor approaches for chatter detection in milling
Journal of Sound and Vibration, 2008The development of a chatter detection system for application in industrial conditions was investigated. Several sensors— rotating dynamometer, accelerometers, acoustic emission and electrical power sensors— were compared to determine which signals are most sensitive to chatter onset.
KULJANIC, Elso +2 more
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Development of an intelligent multisensor chatter detection system in milling
Mechanical Systems and Signal Processing, 2009The development of a chatter detection system based on multiple sensors and suitable for application in industrial conditions was investigated in this paper. The signals obtained from a monitoring system composed of accelerometers mounted on the machine head and an axial force sensor were processed by using advanced signal analysis techniques such as ...
KULJANIC, Elso +2 more
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An intelligent sensor for detection of milling chatter
Journal of Intelligent Manufacturing, 1994In this paper, a new real-time sensor system has been developed to detect chatter in milling operations. In the developed sensor system, a pattern recognition technique based on an unsupervised neural network using the adaptive resonance theory (ART) is adopted for detection of milling chatter.
Tarng, Y.S., Chen, M.C.
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