Results 21 to 30 of about 3,702 (174)

Static analysis of multi-support stepped spindle shafts with nonlinear elastic bearings

Bulletin of the National Technical University «KhPI» Series: Dynamics and Strength of Machines, 2022
In this paper a mathematical model and a computational technique for the static analysis of multi-support stepped spindle shafts on nonlinear elastic supports are presented. On the basis of the Timoshenko differential equation of the beam's bent axis and the method of initial parameters, a resolving system of equations is obtained that takes into ...
Valerij Havin, Oleksiy Kyrkach, Borys Kyrkach   +2 more
openaire   +1 more source

Sensitivity analysis of rotating auxiliary components of a high-speed spindle shaft assembly [PDF]

The International Journal of Advanced Manufacturing Technology
Abstract Machine tool spindles, complex dynamic systems under thermal growth, are significantly influenced by the shaft assembly’s dimensions, including the spindle shaft and various press-fit auxiliary components. Despite the importance of these dimensions, their effects on the spindle’s dynamic and thermo-mechanical behavior have ...
Saif Ahmad Afridi, Esra Yuksel, Gilbert Rivera, Seong-Wook Hong, Erhan Budak   +4 more
openaire   +1 more source

Research on Influencing Factors of Fatigue Strength of Wind Turbine Spindles Based on Nonlinear Contact

Jixie chuandong, 2023
In order to more reasonably simulate the force and force transmission characteristics of the main shaft of a wind turbine, and to find out the influencing factors of the fatigue strength of the main shaft, the nonlinear contact element is used to ...
Song Kewei, Chen Xiaoxu, Liu Xiangyin, Tian Jiabin, Li Xiaoxia   +4 more
doaj  

Evaluation of quality parameters of conical profile compounds in nodes of multi-purpose machines [PDF]

E3S Web of Conferences, 2019
The article presents a study of the mandrel spindle assembly for accuracy, contact stiffness and strength. The study was made on the basis of conical profile connections with an equiaxed contour. Experiments were carried out for multi-purpose machines of
Il’inykh Viktor
doaj   +1 more source

Thermal-induced influences considered spindle unit angular contact ball bearing preload determination using embedded fiber Bragg gating sensors

International Journal of Distributed Sensor Networks, 2022
As the most important segment of the spindle unit angular contact ball bearing, the preload significantly influences the bearing characteristics. Thus, the thermal-induced preload derived from the thermal expansion of spindle unit components also affects
Yanfang Dong, Feifan Chen, Ming Qiu
doaj   +1 more source

Supersmooth grinding technology of spindle outer circle

Jin'gangshi yu moliao moju gongcheng, 2023
In order to improve the surface roughness and roundness of the outer cylindrical surface of the spindle after precision grinding, a novel vertical precision grinding method was proposed, and a vertical grinding device was developed.
Bin LI, Xiaoyu SONG, Yuanyuan WU, Xiaopeng ZHANG, Dongxu REN, Zexiang ZHAO   +5 more
doaj   +1 more source

STUDY OF THE DYNAMICS OF SPINDLE SHAFT ON GAS-STATIC BEARINGS

Problems of Friction and Wear
This study delves into the complex dynamics of spindle shafts mounted on gas-static bearings, employing computational experiments and analysis to reveal crucial insights for optimizing high-precision machining processes. We identify natural frequencies and resonant tendencies of spindle vibrations through advanced Finite Element Method (FEM ...
Oleksii Breshev, Pavlo Nosko, Oleksandr Bashta, Alla Bashta, Maksym Radko   +4 more
openaire   +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

Characterization of Dimensional Variations in Turning Process for Multistep Rotary Shaft of High-Speed Motorized Spindle

Machines, 2023
The surface accuracy of a multistep rotary shaft is very important in manufacturing and the assembly process of the high-speed motorized spindle of CNC machine tools, which is closely related to the machined dimensional variation induced by the turning ...
Ang Tian, Xueming Du, Shun Liu, Sun Jin
doaj   +1 more source

Additive Manufacturing of Patient‐Specific Intracranial Aneurysm Cell Culture Models

Advanced Materials Technologies, EarlyView.
Patient‐specific intracranial aneurysm models were fabricated using chocolate moulding, 3D printed water‐soluble cores, and direct resin 3D printing. Moulding PDMS around sacrificial cores made of chocolate or 3D printed water‐soluble resin yielded accurate, expandable, and endothelializable models that outperformed resin‐based approaches.
Chloe M. de Nys, Jaimee‐Lee Wood, James I. Novak, Danilo Carluccio, Craig D. Winter, Ashley R. Murphy, Mark C. Allenby   +6 more
wiley   +1 more source