Lubrication Characteristics of Tilting Oil Pad Hydrostatic Thrust Bearing Applied to a Heavy CNC Machine Under Eccentric Load Conditions

IF 1.9 4区工程技术 Q3 ENGINEERING, CHEMICAL

Lubrication Science Pub Date : 2025-02-17 DOI:10.1002/ls.1749

Xiaodong Yu, Xianghui Wu, Xiuli Meng, Wenzhuo Qiao, Yankun Sun, Wenjie Ma, Ruichao Li, Ruichun Dai, Wentao Jia, Jianhua Jiao, Junfeng Wang, Hui Jiang

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引用次数: 0

Abstract

When the hydrostatic thrust bearing is machining parts, the machined parts are easily disturbed by external factors and deviate from the centre of the workbench so that the hydrostatic thrust bearing is in the state of eccentric load. In order to explore the lubrication characteristics of hydrostatic thrust bearings under eccentric load conditions, the hydrostatic thrust bearing with 12 tilting oil pads is taken as the research object in this paper. Based on the tribology principle and lubrication theory, the flow equation, load capacity equation and oil film thickness equation of double rectangular oil cavity are derived from the working and structural parameters of hydrostatic thrust bearing. The matching relationship between load and oil film thickness is obtained. The effects of rotational speed, load, and offset distance on the oil film pressure field and temperature field are studied. The experimental platform of hydrostatic thrust bearing is built to verify the correctness of the simulation method of the oil film temperature field and pressure field.

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偏心载荷下大型数控机床倾斜油垫静压推力轴承的润滑特性

静压止推轴承在加工零件时，被加工零件容易受到外界因素的干扰而偏离工作台中心，使静压止推轴承处于偏心载荷状态。为了探讨偏心载荷条件下静压止推轴承的润滑特性，本文以具有12个可倾油垫的静压止推轴承为研究对象。基于摩擦学原理和润滑理论，从静压推力轴承的工作参数和结构参数出发，导出了双矩形油腔的流量方程、承载能力方程和油膜厚度方程。得到了载荷与油膜厚度的匹配关系。研究了转速、负载和偏置距离对油膜压力场和温度场的影响。建立了静压推力轴承实验平台，验证了油膜温度场和压力场仿真方法的正确性。

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来源期刊

Lubrication Science ENGINEERING, CHEMICAL-ENGINEERING, MECHANICAL

CiteScore

3.60

自引率

10.50%

发文量

审稿时长

6.8 months

期刊介绍： Lubrication Science is devoted to high-quality research which notably advances fundamental and applied aspects of the science and technology related to lubrication. It publishes research articles, short communications and reviews which demonstrate novelty and cutting edge science in the field, aiming to become a key specialised venue for communicating advances in lubrication research and development. Lubrication is a diverse discipline ranging from lubrication concepts in industrial and automotive engineering, solid-state and gas lubrication, micro & nanolubrication phenomena, to lubrication in biological systems. To investigate these areas the scope of the journal encourages fundamental and application-based studies on: Synthesis, chemistry and the broader development of high-performing and environmentally adapted lubricants and additives. State of the art analytical tools and characterisation of lubricants, lubricated surfaces and interfaces. Solid lubricants, self-lubricating coatings and composites, lubricating nanoparticles. Gas lubrication. Extreme-conditions lubrication. Green-lubrication technology and lubricants. Tribochemistry and tribocorrosion of environment- and lubricant-interface interactions. Modelling of lubrication mechanisms and interface phenomena on different scales: from atomic and molecular to mezzo and structural. Modelling hydrodynamic and thin film lubrication. All lubrication related aspects of nanotribology. Surface-lubricant interface interactions and phenomena: wetting, adhesion and adsorption. Bio-lubrication, bio-lubricants and lubricated biological systems. Other novel and cutting-edge aspects of lubrication in all lubrication regimes.