液体静压主轴油膜滑移现象的分析及试验研究

doi:10.3901/JME.2016.05.144

摘要/Abstract

摘要： 针对液体静压主轴运动过程中动态特性问题,研究微尺度下油膜滑移对轴承承载力,刚度及动态刚度的影响。把微尺度下发生的速度滑移引入到油膜性能方程中,结合液体静压主轴系统平衡方程推导出了主轴系统承载力、刚度及动态刚度表达式,研究了油膜初期主轴静动态性能及油膜动刚度特性。从仿真结果中得到油膜滑移的发生使得承载力及刚度增大,最大刚度对应油膜厚度减小。最后刚度检测试验间接得出了实际主轴系统油膜流动过程中,存在油膜微滑移现象。本项研究为液体静压主轴微尺度下油膜滑移现象及性能的研究探索了一条新途径。

关键词: 动态特性, 敏感度, 液体静压主轴, 油膜滑移, 轴承刚度

Abstract: For the problem of dynamic characteristics of the hydrostatic spindle in the process of movement, the impact that oil film slip on bearing capacity, stiffness and dynamic stiffness is researched. Introducing the velocity slip boundary conditions, the hydrostatic spindle load-bearing characteristic equation combined with liquid flow equation form a coupling equation system. The bearing capacity, stiffness and dynamic stiffness of spindle system are numerically analyzed. The spindle static and dynamic properties and oil film dynamic stiffness characteristics are researched in the initial stage of oil film. It is concluded that the occurrence of oil film slip results in the increase of bearing capacity and stiffness from the simulation results, the corresponding oil film thickness with the maximum stiffness is reduced. The existence of slip phenomenon is obtained in the oil film flow process of spindle system. This study explores a new way for the analysis of hydrostatic spindle oil film static and dynamic performance and the research of dynamic stiffness.

Key words: bearing stiffness, dynamic characteristic, hydrostatic spindle, oil film slip, sensitiveness

中图分类号:

TH212

陈东菊, 周帅, 边艳华, 范晋伟, 张飞虎. 液体静压主轴油膜滑移现象的分析及试验研究[J]. 机械工程学报, 2016, 52(5): 144-153.

CHEN Dongju, ZHOU Shuai, BIAN Yanhua, FAN Jinwei. Analysis and Experimental Research of Hydrostatic Spindle Oil Film Slip Phenomenon[J]. Journal of Mechanical Engineering, 2016, 52(5): 144-153.

参考文献

[1] 商鹏,阮宏慧,张大卫．基于球杆仪的三轴数控机床热误差检测方法[J]．天津大学学报,2006,39(11)：1336-1340．
SHANG Peng,YUAN Honghui,ZHANG Dawei. Double-ball-bar based thermal errors measurement method for 3-axis CNC machine tool[J]．Journal of Tianjin University,2006, 39(11)：1336-1340．
[2] CHIARA N,DREW R E,ELMAR B,et al．Boundary slip in Newtonian liquids：A review of experimental studies[J]．Reports on Progress in Physics,2005,61(12)：2859-2897．
[3] OLGA I V．Slippage of water over hydrophobic surfaces[J]．International Journal of Mineral Processing,1999,56(1-4)：31-60．
[4] 张广军,孟惠荣,黄平,等．润滑剂边界滑移及其对弹流润滑特性的影响[J]．摩擦学学报,1998,18(3)：243-247．
ZHAGN Guangjun,MENG Huirong,HUANG Ping．The influence of wall slip of lubricants on performance of elastohydrodynamic lubrication in line contacts[J]. Journal of Tribology,1998,18(3)：243-247．
[5] 吴承伟,胡令臣．界面滑移和油膜破裂[J]．大连理工大学学报,1993,33(2)：172-178．
WU Chengwei, HU Lingchen. Wall slippage and oil film collapse[J]．Journal of Dalian University of Technology,
6 1993,33(2)：172-178．
[6] 黄平,雒建斌,温诗铸．粘塑性流体的界面滑移对润滑性能的影响研究[J]．力学学报,1999,31(6)：745-752．
HUANG Ping,LUO Jianbin,WEN Shizhu. Study on influence of the boundary slip of visco-plastic lubricant on the lubrication properties[J]．Acta Mechanica Sinica, 1999,31(6)：745-752．
[7] WARDLE F P,LACEY S J,POON S Y．Dynamic and static characteristics of a wide spread range machine tool spindle [J]．Precision Engineering,1983,1(3)：175-183．
[8] CHEN C H,WANG K W,SHIN Y C．An integrated approach toward the dynamic analysis of high-speed spindles,Part II：Dynamics under moving end load[J]．International Journal of Vibration and Acoustics,1994,116(4)：506-522．
[9] JONES A B．A general theory for elastically constrained ball and radial roller bearings under arbitrary load and speed conditions[J]．ASME Journal of Basic Engineering, 1960,82：309-320．
[10] FRUHL R L,BOOKER J F．A finite element model for distributed parameter turborotor systems[J]．ASME J. Eng. Ind,1972,94：128-132．
[11] CAO Yuzhong,ALTINTAS Y．Modeling of spindle- bearing and machine tool system for virtual simulation of milling operations[J]．International Journal of Machine Tools & Manufacture,2007,47：1342-1350．
[12] 刘赵淼,王国斌,申峰．基于Navier滑移的油膜缝隙微流动特性数值分析[J]．机械工程学报,2011,47(21),104-110．
LIU Zhaomiao,WANG Guobin,SHEN Feng．Numerical analysis of oil film flow in micro gap with navier slip boundary conditions[J]. Journal of Mechnical Engineering,2011,47(21),104-110．
[13] FATU A,MASPEYROT P,HAJJAM M．Wall slip effects in (elasto) hydrodynamic journal bearings[J]．Tribology
International,2011,44(7-8)：868-877．
[14] NAVIER C L. Memoire sur les lois du mouvement des fluids[J]. Mem. Acad. Roy. Sci. Inst. France, 1823, 6：389-440．
[15] FORTIER A E,SALANT R F．Numerical analysis of a journal bearing with a heterogeneous slip/no-slip surface[J]．Journal of Tribology,2005,127(4)：820-825．
[16] LI Wanglong,CHU Hsiaoming,CHEN Mingda．The partially wetted bearing-extended Reynolds equation[J]. Tribology International,2006,39：1428-1435．
[17] LI Jian,ZHOU Ming,CAI Lan, et al．On the measurement of slip length for liquid flow over super-hydrophobic surface[J]．Spring,2009,54：4560- 4565．
[18] CHEN Chienyu,CHEN Qieda,LI Wanglong. Characteristics of journal bearings with anisotropic slip[J]. Tribology International,2013,61：144-155．
[19] 王丽丽. 髙速滑动轴承的界面滑移及空穴机理研究[D].济南：山东大学,2012．
WANG Lili．Study on wall slip and cavitation mechanism of a high speed journal bearing[D]．Jinan：Shandong University,2012．
[20] JIN J,ZHANG G X,WANG X J．Experiment and simulations on lubrication performance of EMP journal bearing[J]．Journal of Shanghai University,2004,8(1)：85-89．
[21] SPIKES H A. The half-wetted bearing,part 1：Extended Reynolds equation[J]．Proceedings of The Institution of Mechanical Engineers Part J-Journal of Engineering Tribology,2003,217：1-14．
[22] SPIKES H A．The half-wetted bearing,part 2：Potential application in low load contacts[J]． Proceedings of The Institution of Mechanical Engineers Part J-Journal of Engineering Tribology,2003,217：15-26．
[23] YANG Choyun,YANG Choyu,SUNG Chengkuo. Design of slip boundary produced by a lotus structure applied to a hydrostatic bearing[J]．Tribol. Lett.,2014,55：55-64．