Results 191 to 200 of about 9,300 (230)

Detection of the onset of chatter vibration

Journal of Sound and Vibration, 1986
In 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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Analysis of Ultrasonic Honing Chatter Vibration Trajectory

Advanced Materials Research, 2010
Grinding chatter belongs to non-linear vibration, whose generation mechanism is complex. The eliminating and reducing of vibration are very difficult, which have been one of the hot and difficult problems at home and abroad. Power ultrasonic vibration honing is a special processing that adds secondary ultrasonic into traditional honing.
Jian Qing Wang, X.J. Zhu, Quan Cheng, Yan Wang   +3 more
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Grinding Chatter and Vibrations

1986
Grinding is a widely used machining process in applications requiring high production rates and very good dimensional accuracy and surface finish. It is also one of the more complex metal working processes and one of the less understood1. Consequently, successful use of grinding in practice is highly dependent on the level of expertise of the machinist
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Adaptive vibration reshaping based milling chatter suppression

International Journal of Machine Tools and Manufacture, 2019
Abstract As a major obstacle to high performance milling, chatter will inevitably decrease tool life, material removal efficiency and workpiece surface quality. Active control based on actuators for chatter suppression has been developed for a long time.
Chenxi Wang, Xingwu Zhang, Jinxin Liu, Hongrui Cao, Xuefeng Chen   +4 more
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Analysis of chatter suppression in vibration cutting

International Journal of Machine Tools and Manufacture, 2002
Abstract The occurrence of chatter is strongly influenced by the tool geometry in conventional cutting. Therefore, the tool geometry is regarded as a very important factor. On the other hand, it is known that vibration cutting is capable of cutting hardened steels. However, the theoretical explanation for finish hard-cutting with vibration cutting is
M. Xiao, S. Karube, T. Soutome, K. Sato
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Chatter stability of synchronized elliptical vibration assisted milling

CIRP Journal of Manufacturing Science and Technology, 2020
Abstract This paper presents the dynamics to analyze the stability of ultrasonic elliptical vibration-assisted milling operations. The elliptical vibrations are delivered to the tool-tip with a piezo actuator integrated to tool holder at about 16.5 kHz with amplitudes of 10 μm and 5 μm in radial and tangential directions, respectively, with 90° phase
Jian Gao, Yusuf Altintas
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CONTINUITY AND BREAK OF CHATTER VIBRATION STATUS

Chinese Journal of Mechanical Engineering (English Edition), 2008
By turning a specifically designed conical part, complete process of metal cutting, in which the chatter occurs and expands,is recorded and analyzed. This process exposes that chatter vibration has two characters called continuity and break.The continuity character means that vibration extent enlarges continuously while chatter frequency is almost ...
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Chatter Vibration Modeling in High Speed Milling Operations

Volume 4: Design and Manufacturing, 2008
High removal rate in milling operations can be limited by chatter occurrence. Several studies on this self-excited vibration can be found in the literature: simple models (1 or 2 dofs) are proposed, i.e. a lumped parameter model of the milling machine being excited by regenerative, time-varying cutting forces.
CATANIA, GIUSEPPE, MANCINELLI, NICOLO'
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Chatter vibration of flexible multibody machine tool mechanisms

Mechanism and Machine Theory, 1987
Abstract This investigation is concerned with the nonlinear vibration analysis of machine tool mechanisms using the finite-element method. The dynamic response of the machine tool mechanism has been analyzed during the application of a constant cutting force that depends on the chip cross-sectional area and shear strength of the workpiece materials ...
A Shabana, B Thomas
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Stability analysis of chatter vibration in turning processes

Journal of Sound and Vibration, 1985
Most turning operations are carried out with use of three-jaw chucks. The position of the jaws with respect to the direction of the cutting force causes a variation in the mass, damping coefficient and stiffness of the workpiece-chuck-spindle system, the variations being larger when the cutting force is acting against a jaw and smaller when the cutting
M. Rahman, Y. Ito
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