Results 31 to 40 of about 48,141 (284)

Development of a Novel MultiBody Mechatronic Model for Five-Axis CNC Machine Tool [PDF]

, 2015
The paper presents the development of a mechatronic hybrid model for Geiss five-axis CNC machine tool using MultiBody-System (MBS) approach. The motion control systems comprising electrical and mechanical elements are analyzed and modeled.
Papananias, M., Pislaru, Crinela, Sztendel, S.   +2 more
core  

Energy-Efficient Machining Process Analysis and Optimisation Based on BS EN24T Alloy Steel as Case Studies [PDF]

, 2019
Computer Numerical Controlled (CNC) machining, which is one of the most widely-deployed manufacturing techniques, is an energy-intensive process.
Caires Moreira, Lorena, Fitzpatrick, Michael, Li, Weidong, Lu, Xin   +3 more
core   +1 more source

A Vascular Microphysiological Model of Lung Fibrosis Reveals That Myofibroblasts and IPF Patient‐Derived Fibroblasts Impair Angiogenesis and Vasculogenesis

Advanced Functional Materials, EarlyView.
A microphysiological lung fibrosis model recapitulates myofibroblast–vascular interactions. Induced myofibroblasts and patient‐derived IPF fibroblasts impair angiogenesis and increase vascular permeability via TGF‐β1–driven signaling. Pharmacological interventions with SB 431542 and VEGF supplementation restore vascular morphology and barrier function.
Elena Cambria, Adriana Blazeski, Eunkyung Clare Ko, Tran Thai, Shania Dantes, David A. Barbie, Sarah E. Shelton, Roger D. Kamm   +7 more
wiley   +1 more source

Development of a Piezoelectric-Driven XYθ_z Nano-Positioning Stage with High Load-Bearing Capacity Enabled by Over-Constrained Guiding Configuration

Micromachines
A novel over-constrained XYθz nano-positioning stage with a high load-bearing capacity is proposed. This serially connected displacement stage adopts an embedded structural design that integrates a translation stage with a rotation stage in series. The Z-
Bin Liu, Lingchen Meng, Shuaishuai Lu, Fei Wang, Pengbo Liu, Peng Yan   +5 more
doaj   +1 more source

Design of tool-state monitoring system based on current method

The Journal of Engineering, 2019
Tool failure is one of the main causes of failure in CNC machine tool machining. The real-time online monitoring technology of CNC machine tool is studied, which is helpful to improve the efficiency of failure-free operation of CNC machine tool and ...
Weiwei Sun, Min Huang, Yiqian He, Kang Li   +3 more
doaj   +1 more source

Study on Thermal Error Modeling for CNC Machine Tools Based on the Improved Radial Basis Function Neural Network

Applied Sciences, 2023
The thermal error modeling technology of computer numerical control (CNC) machine tools is the core of thermal error compensation, and the machining accuracy of CNC machine tools can be improved effectively by the high-precision prediction model of ...
Zhiming Feng, Xinglong Min, Wei Jiang, Fan Song, Xueqin Li   +4 more
doaj   +1 more source

A particle swarm optimisation-based Grey prediction model for thermal error compensation on CNC machine tools [PDF]

, 2015
Thermal errors can have a significant effect on CNC machine tool accuracy. The thermal error compensation system has become a cost-effective method of improving machine tool accuracy in recent years.
Abdulshahed, Ali, Fletcher, Simon, Longstaff, Andrew P.   +2 more
core  

Thermal behaviour in CNC machine-tools

Design of Machines and Structures, 2020
This article describes errors in machine-tools focusing on thermal errors. The internal and external heat sources in machine tools. The basic concepts of heat transfer and an introduction to Finite Element Method FEM applied to heat transfer.
Sebastian Cabezas, Attila Szilágyi
openaire   +2 more sources

Human Brain Vasculature‐on‐a‐Chip Model Constructed With Microvessels Isolated From Cryopreserved Postmortem Human Brain Tissue

Advanced Healthcare Materials, EarlyView.
This manuscript describes the cultivation of viable microvessels from cryopreserved human brain tissue. When embedded in hydrogels and cultured in microfluidic devices, these microvessels exhibit complex architectures reminiscent of arterioles and capillaries, can be perfused, and display intact barrier function. Collectively, these results demonstrate
Brian J. O'Grady, A. Scott McCall, Samuel Cullison, Daniel Chavarria, Matthew S. Schrag, Ethan S. Lippmann   +5 more
wiley   +1 more source

Application of Machine Tool Thermal Error Compensation in Digital Twin-based System

Journal of Harbin University of Science and Technology
Thermal error significantly affects machining accuracy, demanding careful control. A robust system integrating a highly accurate thermal error model is the key to this control. This can be achieved through deep learning-based models.
MA Chi, LI Minging, LIU Jialan, HE Jialong, HUA Chunlei, WANG Liang   +5 more
doaj   +1 more source