Results 31 to 40 of about 443,795 (288)

A Fourier Series-Neural Network Based Real-Time Compensation Approach for Geometric and Thermal Errors of CNC Milling Machines

Advances in Mechanical Engineering, 2013
In order to improve the accuracy and efficiency of the real-time error compensation, a Fourier Series-Neural Network (FS-NN) based compensation methodology is developed to reduce the thermally induced geometric errors of CNC milling machines under ...
Wei Wang, Yi Zhang, Kaiguo Fan, Jianguo Yang   +3 more
doaj   +1 more source

Real-Time Compensation for Thermal Errors of the Milling Machine

Applied Sciences, 2016
This paper is focused on developing a compensation module for reducing the thermal errors of a computer numerical control (CNC) milling machine. The thermal induced displacement variations of machine tools are a vital problem that causes positioning ...
Tsung-Chia Chen, Chia-Jung Chang, Jui-Pin Hung, Rong-Mao Lee, Cheng-Chi Wang   +4 more
doaj   +1 more source

Heat Transfer and Structural Characteristics of Dissimilar Joints Joining Ti-64 and NiTi via Laser Welding

Energies, 2022
This study investigates the thermal-stress characteristics of a bi-metallic Ti-6Al-4V-Nitinol butt joints manufactured via laser welding. Particularly, the thermal profile along the weld interface and the deformation profile of the finished welded ...
Aspen Glaspell, Jose Angel Diosdado De la Pena, Saroj Dahal, Sandesh Neupane, Jae Joong Ryu, Kyosung Choo   +5 more
doaj   +1 more source

The Thermal Error Characteristic Analysis and Thermal Error Modeling Compensation of Aspheric Grinder

Mechanics
According to the literature analysis, the thermal error of CNC machine tools is the main factor affecting its processing accuracy, accounting for about 40% -70% ; This paper discusses the structure assembly of Aspherical Grinder, which is the research carrier of thermal error analysis of NC machine tool, and analyzes the characteristics and concrete ...
Bo YU, Xiao-peng CHANG, Lei YU
openaire   +1 more source

High-Performance Integrated Window and Façade Solutions for California [PDF]

, 2020
The researchers developed a new generation of high-performance façade systems and supporting design and management tools to support industry in meeting California’s greenhouse gas reduction targets, reduce energy consumption, and enable an adaptable ...
Breshears, John, Curcija, Charlie, Deisler-Moroder, David, Fernandes, Luis, Gehbauer, Christoph, Kohler, Christian, Lee, Eleanor, Peng, Jingqing, Selkowitz, Stephen, Thanachareonkit, Anothai, Wang, Taoning, Ward, Gregory   +11 more
core  

Efficient Thermal Error Models of Machine Tools

, 2020
ISBN:978-3-907234-09 ...
openaire   +3 more sources

Measurement and Modeling of Spindle Thermal Error of Fiveaxis CNC Machine Tool with Double Turntable

Journal of Harbin University of Science and Technology, 2019
In order to measure the thermal error of the spindle in the actual cutting process of CNC machine tools and optimize the output of the thermal error model, a method of measuring the thermal error of the spindle of machine tools by using the thermal test ...
LIU Xianli, SONG Houwang, WU Shi, YUE Caixu, Steven Y.Liang, LI Rongyi   +5 more
doaj   +1 more source

Could we identify hot Ocean-Planets with CoRoT, Kepler and Doppler velocimetry? [PDF]

, 2007
Planets less massive than about 10 MEarth are expected to have no massive H-He atmosphere and a cometary composition (50% rocks, 50% water, by mass) provided they formed beyond the snowline of protoplanetary disks.
A. Léger, Alibert, Alonso, B. Chazelas, Baraffe, Baraffe, Barman, Bordé, Bouchy, C. Moutou, C. Sotin, Chassefiére, Cox, D. Despois, D. Ehrenreich, D. Mawet, Di Benedetto, Ehrenreich, F. Bouchy, F. Brachet, F. Selsis, Fortney, Grießmeier, Grießmeier, H. Lammer, J.-M. Grießmeier, J.F. Kasting, Kasting, Kervella, Khodachenko, Kuchner, Lammer, Lovis, Léger, Léger, M. Decaudin, M. Deleuil, M. Ollivier, Mayor, Moutou, O'Donovan, O. Grasset, P. Barge, P. Bordé, Pepe, Press, Protanov, Rafikov, Raymond, Raymond, Raymond, Ribas, Rouan, Santos, Sato, Terada, Tian, Valencia, Vidal-Madjar, Vidal-Madjar, Watson, Wood, Wood, Yelle   +63 more
core   +5 more sources

Thermal error modeling of servo axis based on optimized LSSVM with gray wolf optimizer algorithm

Case Studies in Thermal Engineering
Thermal error of a CNC machine tool has a serious effect on its machining accuracy. In order to reduce the thermal error, establishing an accurate and robust thermal error model is necessary.
Yang Li, Yue Yang, Jiaqi Wang, Fusheng Liang   +3 more
doaj   +1 more source

A Temperature Sensor Clustering Method for Thermal Error Modeling of Heavy Milling Machine Tools

Applied Sciences, 2017
A clustering method is an effective way to select the proper temperature sensor location for thermal error modeling of machine tools. In this paper, a new temperature sensor clustering method is proposed.
Fengchun Li, Tiemin Li, Haitong Wang, Yao Jiang   +3 more
doaj   +1 more source