Results 21 to 30 of about 347,911 (156)

Influence of Chatter of VMC Arising During End Milling Operation and Cutting Conditions on Quality of Machined Surface

open access: yesInternational Islamic University Malaysia Engineering Journal, 2012
Machine tool chatter is a dynamic instability of the cutting process. Chatter results in poor part surface finish, damaged cutting tool, and an irritating and unacceptable noise.
A.K.M.N. Amin, M.A. Rizal, and M. Razman
doaj   +1 more source

Mechanism and suppression of frictional chatter in high-efficiency elliptical vibration cutting [PDF]

open access: yes, 2016
This research clarifies the mechanism of undesirable vibration observed during high-efficiency elliptical vibration cutting. Elliptical vibration cutting has recently been utilized in practice, and some applications require high-efficiency machining at ...
Jung, Hongjin   +2 more
core   +1 more source

The Bivariate Empirical Mode Decomposition and Its Contribution to Grinding Chatter Detection

open access: yesApplied Sciences, 2017
Grinding chatter reduces the long-term reliability of grinding machines. Detecting the negative effects of chatter requires improved chatter detection techniques.
Huanguo Chen   +6 more
doaj   +1 more source

Influence of anisotropic support of tool for self-excited chatter in end-milling

open access: yesNihon Kikai Gakkai ronbunshu
In end milling, chatter vibration generated during processing becomes a problem in processing accuracy. Chatter vibration is classified into forced chatter and self-excited chatter depending on the cause of the vibration.
Kenichiro MATSUZAKI   +4 more
doaj   +1 more source

Chatter Detection in Robotic Milling Using Entropy Features

open access: yesApplied Sciences, 2022
Chatter detection in robotic milling is a difficult issue due to the complex dynamic behavior of robots. In this paper, a novel approach to detecting chatter in the robotic milling process is proposed.
Bin Yang, Kai Guo, Jie Sun
doaj   +1 more source

Performing history, negotiating patriarchy: Actressing as gendered labor and the fragmentation of womanhood in Chinese historical costume drama

open access: yesFeminist Anthropology, EarlyView.
Abstract Gender inequality remains widespread in the film and television production industry, yet it is seldom examined in relation to backstage working environments. This article integrates on‐screen and off‐screen perspectives to investigate the working lives of Chinese actresses.
Yajie Li, Yuhao Ding
wiley   +1 more source

Stability Analysis of a Nonlinear Coupled Vibration Model in a Tandem Cold Rolling Mill

open access: yesShock and Vibration, 2019
Mill chatter in tandem cold rolling mill is a major rejection to the quality and production of the strips. In most mill vibration models, either the roll mass is usually limited to vibrate in vertical direction and vertical-horizontal directions, or the ...
Xing Lu   +4 more
doaj   +1 more source

Active Damping of Milling Vibration Using Operational Amplifier Circuit

open access: yesChinese Journal of Mechanical Engineering, 2018
The problem of chatter vibration is associated with adverse consequences that often lead to tool impairment and poor surface finished in a workpiece, and thus, controlling or suppressing chatter vibrations is of great significance to improve machining ...
Bashir Bala Muhammad   +3 more
doaj   +1 more source

Dynamic Performance Enhancement of a High‐Agility Hypersonic Mechanical System via a Learning‐Augmented Robust Control Architecture

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori   +1 more
wiley   +1 more source

Chatter Identification of Three-Dimensional Elliptical vibration Cutting Process Based on Empirical Mode Decomposition and Feature Extraction

open access: yesApplied Sciences, 2018
Three-dimensional elliptical vibration cutting (3D-EVC) is one of the machining methods with the most potential in ultra-precision machining; its unique characteristics of intermittent cutting, friction reversal, and ease of chip removal can improve the ...
Mingming Lu   +6 more
doaj   +1 more source

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