Results 21 to 30 of about 130 (116)

Characterization and Evaluation of Rotation Accuracy of Hydrostatic Spindle under the Influence of Unbalance

Shock and Vibration, Volume 2020, Issue 1, 2020., 2020
The paper studies the characterization and evaluation technology of rotation accuracy of hydrostatic spindle under the influence of unbalance. The dynamic model of the motion error of the hydrostatic spindle is established based on the dynamic parameters. The variation law of motion error of spindle rotor is analyzed under the unbalanced mass.
Dongju Chen, You Zhao, Jingfang Liu, Adam Glowacz   +3 more
wiley   +1 more source

Influence of T-shaped Pressure-equalization Grooves on Static Characteristics of Aerostatic Bearings under Offset Loads [PDF]

Journal of Applied Fluid Mechanics
Aerostatic thrust bearings are highly susceptible to tilting under offset loads, which can cause bearing failure. To enhance the load-carrying capacity and tilting moment resistance of bearings under tilted operating conditions, this study proposes a ...
X. Shan, A. Yang, H. Su, W. Fu, Y. Zhang, Y. Song, Y. Wang, L. Zhang, J. Shen, Z. Shan, W. Jiang, B. Ye   +11 more
doaj   +1 more source

Research and Analysis of the Static Characteristics of Aerostatic Bearings with a Multihole Integrated Restrictor

Shock and Vibration, Volume 2020, Issue 1, 2020., 2020
In order to further study the performance of aerostatic bearing, an aerostatic bearing with a multihole integrated restrictor was proposed in this paper. Based on the physical model of aerostatic bearings, the governing equation was established, deduced discretely, and solved numerically by the finite‐difference method and flow balance principle in ...
Zhi-wei Lu, Jun-an Zhang, Bo Liu, Nawawi Chouw   +3 more
wiley   +1 more source

Study on the Gas Film Flow Field and its Influencing Factors at the Outlet of the Orifice of the Aerostatic Bearing

Shock and Vibration, Volume 2020, Issue 1, 2020., 2020
In order to further explore and study the influencing factors and regulars of the gas film flow field at the outlet of the orifice of the aerostatic bearing, the large eddy simulation method was used to calculate the N‐S equation in the calculation area of the gas film flow field at the outlet of the orifice of the aerostatic bearing, and the ...
Zhi-Wei Lu, Jun-An Zhang, Bo Liu, Jin Huang   +3 more
wiley   +1 more source

An infinite-stiffness aerostatic thrust bearing.

Journal of the Japan Society for Precision Engineering, 1990
筆者らが考案した静圧式自動調整絞りを組み込んだ空気静圧スラスト軸受を製作してその特性を解析した結果, 次の結論を得た。(1) 400Nの荷重範囲において軸受の静剛性を無限大とすることができた.(2) 主軸受との調整軸受への空気供給圧比を調節することで軸受剛性を正, 無限大, 負と広い範囲で変更できた.(3) ステップ応答における整定時間は5msであり, 圧電素子を用いた自動調整絞りと同程度である.(4) 周波数応答より, 動的コンプライアンスは2Hz以下で1nm/N以下, 10Hzでも3nm/N程度であることが確認された.(5) 供給圧の変動に注意すれぽ10nm程度の軸位置安定性を得ることができる.以上により, 改良された静圧式自動調整絞り付空気静圧軸受は広い荷重範囲において無限大の静剛性を示し ...
MIZUMOTO, Hiroshi, MATSUBARA, Tomio, USUKI, Masao, KAWAKAMI, Ryuichi, YABUYA, Makoto   +4 more
openaire   +2 more sources

Application of multi-leaf foil bearings in high-speed turbo-machinery

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2020
Foil bearings, featuring various advantages (such as high-speed, good operation stability, low friction, long life, strong adaptability, wide temperature range, and oil-free), are promised to have good development prospects and application in high-speed ...
Yu GUO, Yu HOU, Qi ZHAO, Xionghao REN, Tianwei LAI   +4 more
doaj   +1 more source

Theoretical study on dynamics quality of aerostatic thrust bearing with external combined throttling [PDF]

FME Transactions, 2020
The article considers the design, mathematical modelling and theoretical study of dynamics quality on aerostatic thrust bearing with external combined air double throttling and flow cavity.
Kodnyanko Vladimir A., Shatokhin Stanislav N.   +1 more
doaj  

Ultrahigh-Speed Micro-Milling End Mill with Shank Directly Supported by Aerostatic Bearings

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2012
Recently, high-speed micro-milling has attracted considerable attention for effectively manufacturing fine and precise machine components with lower cutting resistance.
Fumitaka NISHIKAWA, Shigeka YOSHIMOTO, Kei SOMAYA   +2 more
doaj   +1 more source

Performance Investigation of the Micro-Hole High-Speed Aerostatic Thrust Bearing Based on the Finite Element Method

Machines
Micro-hole aerostatic bearings have emerged as critical components in ultra-precision machining systems, offering a superior load capacity, stiffness, and stability compared to traditional orifice-based designs.
Siyu Gao, Tianle Jiang, Zhuang Li, Hongbin Yang, Min Zhu, Youyun Shang, Laiyun Song, Lihua Lu, Qiang Gao, Hanqian Zhang   +9 more
doaj   +1 more source

An Optimization Method for the Main Influence Factors on the Performance of Aerostatic Spindle

Shock and Vibration, Volume 2019, Issue 1, 2019., 2019
This paper proposes a novel optimization method to improve the performance of aerostatic spindle. The optimization process is based on the main factors affecting the load and stiffness of aerostatic spindle, which are determined by cross‐correlation analysis.
Dongju Chen, You Zhao, Ri Pan, Jinwei Fan, Chengzhi Shi   +4 more
wiley   +1 more source