Results 71 to 80 of about 1,368 (215)

Chatter control by spindle speed variation in high-speed milling

, 2009
High-speed milling operations are often limited by regenerative vibrations. The aim of this paper is to analyze the effect of spindle speed variation on machine tool chatter in high-speed milling. The stability analysis of triangular and sinusoidal shape variations is made numerically with the semi-discretization method.
Seguy, Sébastien, Dessein, Gilles, Arnaud, Lionel, Insperger, Tamás   +3 more
openaire   +2 more sources

Electric Characteristics of Speed-Controller for Spindle Revolution

Sen'i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan), 1972
A new speed-controller (KSC) was developed for spindles among the chase lift and during the build-up motion. It was improved through many practical tests in the spinning mill. The outline of the controller is described relating to the electric circuit of the progressive starter mechanism and speed controlling circuit for the build-up motion and among ...
Kambara, Yasuhiro, Kuroda, Kenji, Kubota, Masakazu   +2 more
openaire   +2 more sources

A Periosteum‐Inspired Janus Piezoelectric Scaffold Using Bioenergetic‐Driven H‐Type Vascularization for Diabetic Bone Regeneration

Advanced Science, EarlyView.
A periosteum‐inspired Janus piezoelectric scaffold converts micromechanical forces into electrical signals and synergizes with controlled resveratrol release. This dual action reprograms endothelial metabolism, drives H‑type vessel formation, and restores bone–vessel coupling in diabetic bone defects.
Kai Wang, Kai Jiang
wiley   +1 more source

A hybrid approach for the machinability analysis of Incoloy 825 using the entropy-MOORA method

High Temperature Materials and Processes
With its exceptional qualities, Incoloy 825 is highly valued in a range of industries, including nuclear power plants, petrochemical plants, and chemical industries. Nevertheless, the unique combination of these properties presents a formidable challenge
Sahu Saurabh Kumar, Shekhar Shiena, Khan Akhtar, Soni Dheeraj Lal, Gangwar Prashant Kumar, Gupta Manish   +5 more
doaj   +1 more source

Development of methods to improve spindle rotation accuracy while maintaining the precision of spindle unit components [PDF]

E3S Web of Conferences
Spindle rotation accuracy is a critical factor in ensuring the precision and reliability of CNC machining systems. Even minor deviations in spindle rotation can lead to significant dimensional inaccuracies, surface defects, and increased tool wear ...
Juraev Musurmon, Safarova Dildora, Urinov Nasillo, Akhmedova Khalima, Abdullayev Shokhjakhon   +4 more
doaj   +1 more source

FOS3D: A Fluorescence‐Enabled Toolkit for Characterizing a Three‐dimensional Osteosarcoma Model

Advanced Science, EarlyView.
FOS3D describes fluorescent (F) osteosarcoma (OS) cells in a tri‐dimensional (3D) model. The study comprises three phases: development, where biofabrication parameters are tuned to achieve cytocompatibility and tumor‐specific mechanical properties in cell‐laden gelatin methacryloyl constructs; validation, where whole‐well fluorescence reading is ...
William Humble, Wiktor Zywicki, Enrico Lucarelli, Ania Naila Guerrieri, Francesca Taraballi, Gianluca Cidonio, Claudia Di Bella, Carmine Onofrillo, Andrea J. O'Connor, Serena Duchi   +9 more
wiley   +1 more source

Dynamic behavior of the horizontal milling and drilling machine spindle assembly with Dynrot software

MATEC Web of Conferences, 2017
This article presents research conducted to study the dynamic behavior of the assembly of a horizontal milling CNC machine spindle at the speed of 10 000 rpm and 50 000 rpm.
Căruţaşu Nicoleta Luminiţa, Pascu Nicoleta Elisabeta, Căruţaşu George   +2 more
doaj   +1 more source

Water‐Enabled Ultralong Full‐Color Organic Phosphorescence in Hydrogen‐Bonded Frameworks for 4D Encryption and Bio‐Imaging

Advanced Science, EarlyView.
Water‐induced quenching challenges organic RTP materials, but a counter‐intuitive strategy employs HOF to encapsulate carbonyl guests, where water functions as a structural reinforcer. This achieves water‐enhanced ultralong RTP with full‐color emission (blue to deep red), overcoming intracellular quenching for high‐signal cellular imaging, alongside 4D
Pengcheng Wu, Zenggang Lin, Lu Yang, Weisheng Liu   +3 more
wiley   +1 more source

Characteristics of Additional Load Losses of Spindle System of Machine Tools

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2010
Energy consumption of machine tool has drawn wide attention in recent years. The additional load losses of machine tools are of great importance for investigating the energy consumption of machine tools because those account for 15-20% of the cutting ...
Shaohua HU, Fei LIU, Yan HE, Bin PENG
doaj   +1 more source

Ultrasound‐Activatable Piezoelectric Hydrogel Reprograms Mitochondrial Epigenetics for Osteoarthritis Therapy via the mTOR/GATD3A Axis

Advanced Science, EarlyView.
An ultrasound‐activatable piezoelectric hydrogel reprograms chondrocyte mitochondrial epigenetics via the mTOR/GATD3A axis, clearing damaged mitochondria and alleviating osteoarthritis progression in both mouse models and human cartilage explants. ABSTRACT The avascular nature of cartilage hinders drug delivery for osteoarthritis (OA) therapy.
Hui Zheng, Pengfei Yan, Peng Liu, Chang Yan, Mengqi Zhao, Zuyong Wang, Chao Ma, Rongkai Zhang, Xi Cui, Swee Hin Teoh   +9 more
wiley   +1 more source