Results 81 to 90 of about 122 (107)
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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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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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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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Analysis of chatter marks damage on the Yankee dryer surface of a tissue machine
Engineering Failure Analysis, 2012A tissue machine suffering from Yankee chatter marks has been experimentally investigated. A series of vibration measurements during normal operation at various Yankee speeds on both the creping and the cleaning blade holders have been carried out. The analysis in a frequency range up to 20 kHz has permitted to identify speed dependent frequency peaks ...
Escaler Puigoriol, Francesc Xavier +2 more
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Chatter Marks and Vibration Analysis in a S6-High Cold Rolling Mill
2013S6-high rolling mill is an advanced mode to work the steel: it allows the use of very small work rolls laterally guided by individually adjustable side support rolls, which are supported by two rows of roller bearings mounted in cassettes. In this paper the vibrations generated in a S6-high cold rolling mill are analyzed with the aim to investigate the
Sergio Cervo +2 more
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Analysis and Control of Chatter Marks of Strip Steel on HC Cold Rolling Mill
Advanced Materials Research, 2012According to the chatter marks on strip steel of HC cold rolling mill , by analysis the collected vibration and simulation analysis on rolling mill, it is found that chatter marks of strip steel surface cuased by the Seventh-order natural frequency. Then, for analysising cuase of chatter marks on strip steel surface, relevant inhibiting chatter marks ...
Zhi Jiang Xie, Chang Gui Xie, Ping Chen
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Model-Based Identification of Chatter Marks during Cylindrical Grinding [PDF]
, 2013 The following paper presents an online model-based monitoring algorithm that identifies and quantifies the level of waviness caused by grinding chatter exploiting accelerations measured on the machine. A Weighted Least Squares method has been applied in the frequency domain that leads to a clear interpretation of the forcing effect caused by the ...
PARENTI, PAOLO +4 more
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CIRP Annals, 1981
Summary This paper is concerned with how to display effectively 2D surface roughness, which was measured by using light sectioning method and by taking self-excited chatter marks as objective. The marks due to chatter which was mainly caused for work and tool respectively are taken.
H. Sato, M. O-hori, H. Tsuwa
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Summary This paper is concerned with how to display effectively 2D surface roughness, which was measured by using light sectioning method and by taking self-excited chatter marks as objective. The marks due to chatter which was mainly caused for work and tool respectively are taken.
H. Sato, M. O-hori, H. Tsuwa
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Relationship between chatter marks and rolling force fluctuation for twenty-high roll mill
Engineering Failure Analysis, 2015Abstract Chatter marks on the surface of a rolled steel strip may seriously affect the final product quality. It is still difficult to discover the generation mechanism of chatter marks and develop an effective method to identify chatter marks. In this paper a rolling force fluctuation model is proposed based on the variation of the rolling force ...
Shengli Wu +4 more
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International Journal of Precision Engineering and Manufacturing, 2012
Recently, vibration assistance has been mainly applied to feed and cross-feed directions for milling processes. This paper investigates the effect of ultrasonic vibration assistance in tooling’s axial direction for improvement of machined surface with reduction of chatter marks.
Jeong Hoon Ko, Shao Wei Tan
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Recently, vibration assistance has been mainly applied to feed and cross-feed directions for milling processes. This paper investigates the effect of ultrasonic vibration assistance in tooling’s axial direction for improvement of machined surface with reduction of chatter marks.
Jeong Hoon Ko, Shao Wei Tan
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