Results 71 to 80 of about 122 (107)
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Advanced Materials Research, 2012
The chatter mark vibration generated in the rolling process of the twenty-high roll mill not only significantly affects the mill performance, but also reduces surface quality of the strip steel. To identify the excitation source, the online monitor for the real time torsional strain of the main drive shaft is performed for a Sendzimir twenty-high roll ...
Sheng Li Wu, Wu Sheng Li
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The chatter mark vibration generated in the rolling process of the twenty-high roll mill not only significantly affects the mill performance, but also reduces surface quality of the strip steel. To identify the excitation source, the online monitor for the real time torsional strain of the main drive shaft is performed for a Sendzimir twenty-high roll ...
Sheng Li Wu, Wu Sheng Li
exaly +2 more sources
Optical measurements of chatter marks
Wear, 1986Abstract When testing geometrical elements of machined components one distinguishes between form, waviness and roughness. To describe the roughness there is a choice of parameters which cover various functions. To describe the form and waviness, there are only the peak-to-valley values.
N. Rau, G. Huebner
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Optical Measuring Instrument for Chatter Marks
CIRP Annals, 1984Summary A new instrument has been developed and is now in use on shop floor for inspecting chatter marks sometimes generated by the grinding and the ultra-precision machining process. The instrument is able to measure both geometrical waviness and fluctuation of glossiness of the finished surface.
Y. Sakai, S. Ogata, S. Asai, T. Hoshi
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An diagnosis method of chatter marks based on PCA
2010 8th World Congress on Intelligent Control and Automation, 2010Chatter mark on the surface of the cold rolled or skin passed steel strips will seriously depress the product quality. This paper deeply analysis the mechanism and data relationship of rolling plant, find out the process data information and variables related to chatter mark.
null Jian Zhang +2 more
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Self-Excited Chatter and its Marks in Turning
Journal of Engineering for Industry, 1984Investigations were made on self-excited chatter of the work which is held at one end on a lathe machine. Analysis was carried out by a two-degrees-of-freedom system. It was verified that introduction of the multiple regenerative effect governs the finite amplitude of the vibration after it is excited.
T. Kaneko, H. Sato, Y. Tani, M. O-hori
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Investigation of Control Methods of Chatter Vibration Based on Analysis of End-Milling Chatter Mark
Advanced Materials Research, 2015Chatter vibration generated by coupling a work-piece, machine tools, and cutting tool is a serious problem for engineers. A regular pattern forms the machined surface when chatter vibration occurs. There must be a direct relationship between the relative displacement and machined surface.
Ryosuke Shiota +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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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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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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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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