Results 31 to 40 of about 9,300 (230)

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

Nihon 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, Takahiro RYU, Takashi NAKAE, Keizo TSUKAMOTO, Ryuta SAMESHIMA   +4 more
doaj   +1 more source

Chatter Detection in Robotic Milling Using Entropy Features

Applied 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

On the stability of high-speed milling with spindle speed variation [PDF]

, 2010
Spindle speed variation is a well-known technique to suppress regenerative machine tool vibrations, but it is usually considered to be effective only for low spindle speeds.
BP Mann, E Al-Regib, E Budak, E Solis, F Yang, Gilles Dessein, Grégoire Peigné, GS Duncan, H Paris, H Zhang, J Tlusty, J Tlusty, JS Sexton, JS Sexton, JS Sexton, Lionel Arnaud, M Zatarain, MA Davies, ML Campomanes, ND Sims, PV Bayly, R Radulescu, RPH Faassen, S Jayaram, S Sastry, S Seguy, S Seguy, S Smith, SA Tobias, SC Lin, SD Merdol, Sébastien Seguy, T Insperger, T Insperger, T Insperger, T Insperger, T Surmann, T Takemura, Tamás Insperger, TC Tsao, XH Long, Y Altintas, Y Altintas, Y Altintas   +43 more
core   +4 more sources

Effects of Lycium barbarum Residue Substituting Dietary Maize on Fecal Microbiota and Growth Performance of Crossbred Simmental Cattle

Animal Research and One Health, EarlyView.
The bioactive substances we extracted from Lycium barbarum residue (LBR) have a typical polysaccharide structure. When 1.80% LBR was used to replace maize in the diet, the average daily gain of rossbred Simmental was significantly increased, and anti‐inflammatory ability was improved. In addition, LBR improved the fecal microbial composition, increased
Kun Cai, Mingtan Li, Lihang He, Ning Ma, Haoyu Liu, Chi Xu, Xianhua Wu, Zeguang Xing, Qian Xing, Yuankai Qu, Xi Ma   +10 more
wiley   +1 more source

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

Shock 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, Jie Sun, Guangtao Li, Zhenhua Wang, Dianhua Zhang   +4 more
doaj   +1 more source

Active Damping of Milling Vibration Using Operational Amplifier Circuit

Chinese 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, Min Wan, Yang Liu, Heng Yuan   +3 more
doaj   +1 more source

EVALUATION OF CHATTER VIBRATION FREQUENCY IN CNC TURNING OF 4340 ALLOY STEEL MATERIAL [PDF]

, 2017
In this study, an experimental investigation of chatter in CNC turning for 4340 Alloy Steel material was carried out. Empirical study of chatter and critical cutting condition in CNC turning has been conducted through a well- designed three-factor three ...
Nwoke , Obinna N., Okafor , Christian E., Okokpujie , Imhade P., Okonkwo , Ugochukwu C.   +3 more
core  

Disturbance‐Resilient Voltage/Power‐Quality Management for Islanded Inverters Using Self‐Tuning Type‐3 Fuzzy Controller

Energy Science &Engineering, EarlyView.
An adaptive fuzzy controller using an interval type‐3 fuzzy logic system replaces the SMC switching term to mitigate chattering while preserving global stability for islanded inverters. Simulations show lower THD, greater robustness to disturbances and parameter variations, and improved voltage‐tracking accuracy, with applicability to other uncertain ...
Man‐Wen Tian, Jun‐Bo Mao, Nurkhat Zhakiyev, Didar Yedilkhan, Ruslan Omirgaliyev, Du Changdong, Amirhossein Khosravi Sarvenoee, Ardashir Mohammadzadeh   +7 more
wiley   +1 more source

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

Applied 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, Bin Chen, Dongpo Zhao, Jiakang Zhou, Jieqiong Lin, Allen Yi, Hao Wang   +6 more
doaj   +1 more source

Toolpath dependent stability lobes for the milling of thin-walled parts [PDF]

, 2008
The milling of thin-walled parts can become a seriously complex problem because the parts have variable dynamics. Firstly, the dynamics evolution of the part has been calculated through Finite Element Method (FEM) analysis.
Aramendi, Gorka, Arnaud, Lionel, Campa, Francisco Javier, Dessein, Gilles, López de Lacalle, Luis Norberto, Seguy, Sébastien   +5 more
core   +3 more sources