Results 1 to 10 of about 3,846 (166)

Rotation Accuracy Analysis of Aerostatic Spindle Considering Shaft’s Roundness and Cylindricity [PDF]

Applied Sciences (Switzerland), 2021
The rotation accuracy of the aerostatic spindle can easily be affected by shaft shape errors due to the small gas film clearance. Thus, the main shaft shape errors with the largest scale—that is, the roundness and cylindricity errors—are studied in this ...
Guoqing Zhang
exaly   +4 more sources

Development of the Spindle Shaft for Machining Center Using High Thermal Conductivity Material

Journal of Advanced Mechanical Design, Systems and Manufacturing, 2023
Due to the high precision and high speed of spindles for machining centers, thermal issues cannot be avoided. The temperature rises of the spindle shaft, which is the rotating component, causes issues such as increased thermal displacement in the tool ...
Naohiko Sugita
exaly   +4 more sources

Estimating Temperature Distribution and Heat Quantity of Spindle Shaft for Machining Centers

Journal of Advanced Mechanical Design, Systems and Manufacturing
The thermal issue of spindles for machining centers is still fundamentally unresolved. Thermal problems due to increased temperature of the spindle shaft lead to thermal displacement of the tool axis and an increase in friction torque, consequently ...
Naohiko Sugita
exaly   +4 more sources

Cooling of Spindle Shaft for Machining Center Using Heat Exchangers

Journal of Advanced Mechanical Design, Systems and Manufacturing
The cooling method for machining center spindles commonly involves utilizing a fixed-side jacket cooling system with lubricating oil or coolant as the refrigerant.
Naohiko Sugita
exaly   +4 more sources

Multi-Field Coupling Dynamics Modeling of Aerostatic Spindle

Micromachines, 2021
The aerostatic spindle in the ultra-precision machine tool shows the complex multi-field coupling dynamics behavior under working condition. The numerical investigation helps to better understand the dynamic characteristics of the aerostatic spindle and ...
Guoda Chen, Yijie Chen
doaj   +1 more source

Method of Selecting the Operation Parameters of Electric Spindle with Aerostatic Supports for Separation of Semiconductor Plates to Crystals. Parts 2–3

Механика машин, механизмов и материалов, 2021
The article presents the results of studies of the shaft oscillation processes of a precision horizontal highspeed electric spindle with aerostatic radial and axial supports, used at Planar OJSC in equipment for separation of semiconductor plates into ...
Alexander E. Kovensky, Vladimir L. Basiniuk, Ryta E. Volkotrub   +2 more
doaj   +1 more source

Dynamic analysis of grinding electric spindle bearing-rotor system under eccentric action

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2023
To study the influence of eccentricity on the dynamic characteristics of grinding electric spindle, firstly, the nonlinear oil film force (NOFF) expression of sliding bearing is established based on the boundary condition of adhesion pressure.
Lianchao SHENG, Qi SUN, Guo YE, Wei LI
doaj   +1 more source

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

Bulletin of the National Technical University «KhPI» Series: Dynamics and Strength of Machines, 2021
In this paper a mathematical model and computational tool are developed for the static analysis of multi-bearing spindle shafts with nonlinear elastic supports. Based on the Timoshenko beam theory a resolving system of equations is obtained that takes into account the nonlinear dependence of the bearing stiffness on the reaction forces acting upon them.
Oleksiy Kyrkach, Havin Valerij Havin, Borys Kyrkach   +2 more
openaire   +2 more sources

Research on Life Prediction of Fan Spindle Bearing Based on Gated Recurrent Unit Neural Network [PDF]

E3S Web of Conferences, 2021
In order to solve the problems of redundancy calculation and inefficiency of traditional machine learning algorithm in dealing with large amount of historical data of fan, a new predictive algorithm based on gated recurrent unit (GRU) is proposed to ...
Ma Jianeng
doaj   +1 more source

Design of Compound Machine Tool for Ultra-Precision Shaft Parts [PDF]

MATEC Web of Conferences, 2020
Ultra-precision shaft components are widely used, such as the shaft core of air-floating spindle, etc. At present, the final precision of such workpieces are difficult to reach through CNC machining tools, but often with the help of manual grinding, of ...
Sun Zizhou, Dai Yifan, Hu Hao, Guan Chaoliang, Tie Guipeng, Chen Xuelei   +5 more
doaj   +1 more source