小型高速精密气浮气动主轴的研制

蒋雷; 尹韶辉; 陈逢军

doi:10.13433/j.cnki.1003-8728.2015.1010

小型高速精密气浮气动主轴的研制

doi: 10.13433/j.cnki.1003-8728.2015.1010

1.
湖南大学国家高效磨削工程技术研究中心, 长沙 410082

基金项目:

国家科技重大专项2010ZX041012-072

国际科技合作专项项目(2012DFG70640)资助

详细信息

作者简介:
蒋雷(1990-),硕士,研究方向为超精密加工率,高速精密主轴,jlhylove@163.com

通讯作者:
尹韶辉,教授,博士,shyin2000@hotmail.com

计量
- 文章访问数: 208
- HTML全文浏览量: 29
- PDF下载量: 17
- 被引次数: 0
出版历程
- 收稿日期: 2013-09-01
- 刊出日期: 2015-10-05

Developing a Small High-speed Air-driven Pneumatic Spindle

1.
National Engineering Research Center for High Efficiency Grinding, Hunan University, Changsha 410082, China

摘要

摘要: 针对微结构的超精密磨削要求,设计了一种涡轮驱动的小型气浮主轴。采用了涡轮叶片作为动力结构部分,由压力气体驱动,带动主轴高速旋转;同时也采用了空气静压轴承作为支撑;建立了气动涡轮的设计模型,分析了气体静压支承轴承的结构参数,仿真研究了各设计参数对轴承承载力的影响,得出了最佳的设计尺寸和主轴工作参数,对涡轮与转轴组成的整体转子进行了模态分析,计算出了主轴的临界转速,研究了主轴的加工工艺。试验结果表明:该设计合理,达到了设计要求。
- 主轴 /
- 气体轴承 /
- 涡轮驱动 /
- 微结构
Abstract: This paper designs an air turbine-driven spindle which is supported by air bearings for ultra-precision machining of a microstructure. An air turbine is used as the micro-structure powered with high-pressure air, and three air bearings are used as the supporting device. The design model of air turbine is established, and the structural parameters of air bearings are analyzed. The effects of various design parameters on the capacity of air bearing were simulated, and the optimal dimensions and working parameters were obtained. Moreover, the natural frequency of the turbine and its rotor including the shaft is studied, thus obtaining the critical rotational speed. Finally the paper studies the machining process of the air turbine-driven spindle and conducts experiments on the spindle. The experimental results show that our design method is reasonable and meets the design requirements.
- air bearing /
- air turbine-driven spindle /
- bearings(machine parts) /
- calculations

HTML全文

参考文献(11)

[1]	Jahanmir S, Ren Z, Heshmat H, et al. Design and evaluation of an ultrahigh speed micromachining spindle[J]. Machining Science and Technology, 2010,14(2):224-243
[2]	Chae J, Park S S, Freiheit T. Investigation of micro-cutting operations[J]. International Journal of Machine Tools and Manufacture, 2006,46(3-4):313-332
[3]	蓝方昕.高速气动涡轮的设计[J]. 机床与液压,1989(1):35-42 Lan F X. Design of high speed air-driven turbine[J]. Machine Tools & Hydraulics,1989(1):35-42(in Chinese)
[4]	An C H, Zhang Y, Xu Q, et al. Modeling of dynamic characteristic of the aerostatic bearing spindle in an ultra-precision fly cutting machine[J]. International Journal of Machine Tools and Manufacture, 2010,50(4):374-385
[5]	熊万里.我国高性能机床主轴技术现状分析[J]. 金属加工(冷加工),2011,(18):6-10 Xiong W L. Analysis of technical state of high performance machine spindle of our country[J]. Metal Working,2011(18):6-10(in Chinese)
[6]	Powell J W. Design of aerostatic bearings[M]. London:Machinery Publishing Co. Ltd,1970
[7]	刘暾,刘育华,陈世杰.静压气体润滑[M]. 哈尔滨:哈尔滨工业大学出版社,1990 Liu D, Liu Y H, Chen S J. Aerostatic gas lubrication[M]. Harbin:Harbin Institute of Technology Press,1990(in Chinese)
[8]	Lo C Y, Wang C C, Lee Y H. Performance analysis of high-speed spindle aerostatic bearings[J]. Tribology International, 2005,38(1):5-14
[9]	Licht L, lrod H G. An experimental study of the stability of an externally pressurized, gas-lubricated thrust bearing[J]. Journal of Applied Mechanics, 1961,33(1):25-30
[10]	郭良斌.多供气孔静压圆盘止推气体轴承的参数设计[J]. 润滑与密封,2007,32(4):108-111 Guo L B. Parameters design of air static pressure thrust air bearing with more holes[J]. Lubrication Engineering,2007,32(4):108-111(in Chinese)
[11]	李伟.微机床主轴用涡轮设计及其气动性能研究[J]. 湖南大学学报,2012,39(8):34-38 Li W. Turbine design and aerodynamic performance research of micro-machine spindle[J]. Journal of Hunan University,2012,39(8):34-38(in Chinese)