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Modeling, analysis, and removal of chatter marks in flexible turning
The International Journal of Advanced Manufacturing Technology, 2017Chatter is a kind of self-excited, unstable vibration in almost all machining processes. Existing studies have been focusing on the pre-chatter stage, developing various techniques to detect, predict, and suppress chatter. In real applications, chatter will inevitably happen under certain cutting conditions, with generating chatter marks on the ...
Yuxin Sun, Zhenhua Xiong
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Scattered light sensor for chatter mark detection in nanometer scale
International Journal of Nanomanufacturing, 2012The detection and analysis of chatter marks in nanometer scale, using an angle resolved scattered light sensor, is discussed in this paper. After explaining the fundamental principles of scattered light sensors, a transfer function is obtained which yields the limit of wavelength that can be detected.
J. Seewig, M. Wendel
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Scatterometric analysis of chatter marks occurring in industrial grinding processes
SPIE Proceedings, 2010Grinding processes often underlie chattering which results in a wavy surface of the ground metal sheet. In this work it will be shown that the angle resolved light scattering method is not only suitable to monitor industrial grinding processes, in both waviness and roughness modes, but also enables the determination of the waviness of a ground ...
J. Böhm +3 more
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A Method of Chatter Marks Identification Based on Autocorrelation-Threshold
Key Engineering Materials, 2013Mill chattering is frequently observed in the strip rolling process which causes dark and bright fringes on the strip surface. Due to the complex vibration sources and the characteristic signals usually masked by the heavy noise signals, how to identify and control the mill chattering are always difficult problems.
Li Ming Wang, Yi Lin Yuan, Yi Min Shao
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Analysis of Chatter Marks in Accurate Grinding on Optical Curve Grinder
Key Engineering Materials, 2006Chatter marks that limit ground surface finish have been observed in accurate grinding by using optical curve grinder. To reveal the mechanism of chatter marks, the relationships between grinding parameters and chatter marks are experimentally studied. The profile of the ground surface is analyzed through microscope as well as FFT method.
Li Ming Xu +4 more
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INTER-NOISE and NOISE-CON Congress and Conference Proceedings, 2021
Intuition enables experienced machine operators to detect production errors and to identify their specific sources. A prominent example in machining are chatter marks caused by machining vibrations. The operator's assessment, if the process runs stable or not, is not exclusively based on technical parameters such as rotation frequency, tool diameter ...
Florian Trautmann +6 more
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Intuition enables experienced machine operators to detect production errors and to identify their specific sources. A prominent example in machining are chatter marks caused by machining vibrations. The operator's assessment, if the process runs stable or not, is not exclusively based on technical parameters such as rotation frequency, tool diameter ...
Florian Trautmann +6 more
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Identification of Machining Chatter Marks on Surfaces of Automotive Valve Seats
Journal of Manufacturing Science and Engineering, 2011In this paper, we propose a method for inspecting machining chatter marks on automotive valve seats using image processing technique. Chatter or self-excited tool-workpiece relative vibration is unacceptable in the machining processes of valve seats, because it causes poor surface finish and can create internal leaks in the engine.
Hagay Bamberger +3 more
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Investigation of chatter marks on ground surfaces by means of optical methods
Optics and Lasers in Engineering, 2011Abstract In order to characterise chatter marks, in this work, various ground samples are investigated by means of two different optical surface analysis techniques: by using a confocal white light microscope and an angle-resolved light scattering sensor, respectively.
J.A. Böhm, A. Vernes, M.J. Vellekoop
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Mechanism of the Strip Surface Chatter Marks with 1220 Cold Rolling Mill
Applied Mechanics and Materials, 2014Aiming at a 1220 strip surface, where the Cold Rolling Mill had chatter marks, on which the reasons for the formation was tracked tested for in-depth study. Based on the vibration test, the analysis was given to the dynamic characteristics of the rack [1-3].
Chang Gui Xie, Hai Zeng
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Volume 1: Additive Manufacturing; Advanced Materials Manufacturing; Biomanufacturing; Life Cycle Engineering; Manufacturing Equipment and Automation, 2021
Abstract When chatter vibrations occur during cutting, a characteristic pattern called chatter mark appears on the machined surface. In our previous studies, it was estimated that this chatter mark is formed by the tool (or workpiece) vibration in the normal direction with respect to the machined surface.
Nobutoshi Ozaki +3 more
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Abstract When chatter vibrations occur during cutting, a characteristic pattern called chatter mark appears on the machined surface. In our previous studies, it was estimated that this chatter mark is formed by the tool (or workpiece) vibration in the normal direction with respect to the machined surface.
Nobutoshi Ozaki +3 more
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