A high-speed precision micro-spindle use for mechanical micro-machining

  • Wei LiEmail author
  • Mingjia Liu
  • YingHui Ren
  • Qidi Chen


Mechanical micro-machining has significant advantages in compassion with other machining techniques in terms of workpiece complexity, material diversity, energy consumption, and cost. The existing micro-spindles, as the key fundamental equipment, cannot simultaneously guarantee ultra-high rotational speed, high rotational accuracy, and compact structure. This study discussed the details in designing of high-speed precision micro-spindles, and a new micro-spindle was proposed, which is driven by an air turbine. To enhance its stiffness and rotational accuracy, the porous ceramic aerostatic bearings are used. The key structural parameters were selected based on theoretical calculation and simulation analysis. More importantly, the theoretical models for its static error and dynamic response predictions were established and combined to optimize the size of micro-spindle. The prototype micro-spindle has a radial motion error of approximately 6.0 μm and no heating problem. The micro-grinding experiment of micro-channel shows its good feasibility and potential application in mechanical micro-machining. And it has very simple and compact structure (28 mm in diameter × 45 mm in length) and low manufacturing difficulty and cost.


Micro-spindle Air turbine Porous bearing Static error Dynamic response Micro-grinding 


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Funding information

The presented work are funded by the National Science Foundation of China (51505140, 51675170, 51875192), the China Postdoctoral Science Foundation (2016T90749, 2015M570676), and the Fundamental Research Funds for the Central Universities.


  1. 1.
    Li SS, Zou B, Xu KT, Wang YS (2018) Machined channel quality and tool life using cermet micro-mill in micro-milling aluminum alloy. Int J Adv Manuf Technol 25:888–894. Google Scholar
  2. 2.
    Wu MT, Guo B, Zhao QL, He P (2018) Precision grinding of a microstructured surface on hard and brittle materials by a microstructured coarse-grained diamond grinding wheel. Ceram Int 44:8026–8037. CrossRefGoogle Scholar
  3. 3.
    Chae J, Park SS, Freiheit T (2006) Investigation of micro-cutting operations. Int J Mach Tool Manu 46:313–332. CrossRefGoogle Scholar
  4. 4.
    Kuram E, Ozcelik B (2013) Multi-objective optimization using Taguchi based grey relational analysis for micro-milling of Al 7075 material with ball nose end mill. Measurement 46:1849–1864. CrossRefGoogle Scholar
  5. 5.
    Jing X, Tian Y, Yuan Y (2017) An experimental investigation of micro-milling brass considering run out by carbide micro-end mills. Proc Inst Mech Eng C J Mech Eng Sci 203-210:1989–1996. Google Scholar
  6. 6.
    Anandan KP, Tulsian AS, Donmez A (2012) A technique for measuring radial error motions of ultra-high-speed miniature spindles used for micromachining. Precis Eng 36:104–120. CrossRefGoogle Scholar
  7. 7.
    Wang SM, Lin JJ (2013) On-machine volumetric-error measurement and compensation methods for micro machine tools. Int J Precis Eng Manuf 14:989–994. CrossRefGoogle Scholar
  8. 8.
    Bang Y, Lee K, Oh S (2005) 5-axis micro milling machine for machining micro parts. Int J Adv Manuf Technol 25:888–894. CrossRefGoogle Scholar
  9. 9.
    Aurich JC, Engmann J, Schueler GM (2009) Micro grinding tool for manufacture of complex structures in brittle materials. CIRP Ann Manuf Technol 58:311–314. CrossRefGoogle Scholar
  10. 10.
    Jahanmir S, Ren Z, Heshmat H (2010) Design and evaluation of an ultrahigh speed micro-machining spindle. Mach Sci Technol 14:224–243. CrossRefGoogle Scholar
  11. 11.
    Li W, Zhou ZX, Xiao H (2015) Design and evaluation of a high-speed and precision microspindle. Int J Adv Manuf Technol 78:997–1004. CrossRefGoogle Scholar
  12. 12.
    Gill DD, Jokiel B, Ziegert JC (2004) Next generation spindles for micromilling. Sandia National Laboratories, Albuquerque. Google Scholar
  13. 13.
    Creighton E, Honegger A, Tulsian A (2010) Analysis of thermal errors in a high-speed micro-milling spindle. Int J Mach Tools Manuf 50:386–393. CrossRefGoogle Scholar
  14. 14.
    Abele E, Altintas Y, Brecher C (2010) Machine tool spindle units. CIRP Ann Manuf Technol 59:781–802. CrossRefGoogle Scholar
  15. 15.
    Kimman MH, Langen HH, Schmidt RHM (2010) A miniature milling spindle with active magnetic bearings. Mechatronics 20:224–235. CrossRefGoogle Scholar
  16. 16.
    Sung H (2007) High-speed fluid bearing micro-spindles for meso-scale machine tools (mMTs). Northwestern University, IllinoisGoogle Scholar
  17. 17.
    Li W, Zhou ZX, Huang XM (2014) Development of a high-speed and precision micro-spindle for micro-cutting. Int J Precis Eng Manuf 15:2375–2383. CrossRefGoogle Scholar
  18. 18.
    Schmitz TL, Powell K, Won D (2007) Shrink fit tool holder connection stiffness/damping modeling for frequency response prediction in milling. Int J Mach Tool Manu 47:1368–1380. CrossRefGoogle Scholar
  19. 19.
    Shin WC, Ro SK, Park HW (2009) Development of a micro/meso-tool clamp using a shape memory alloy for applications in micro-spindle units. Int J Mach Tool Manu 49:579–585. CrossRefGoogle Scholar
  20. 20.
    Lee S, Ro SK, Park JK (2016) Performance evaluation of a shape memory alloy tool holder for high-speed machining. Int J Adv Manuf Technol 84:717–725. CrossRefGoogle Scholar
  21. 21.
    Li W, Zhou Z, Zhang B (2016) A micro-coupling for micro mechanical systems. Chin J Mech Eng 29:571–578. CrossRefGoogle Scholar
  22. 22.
    Li W, Zhou ZX, Xiao H (2016) Effects of annealing and training on NiTi alloy ring for clamping device. Mater Manuf Process 31:2011–2016. CrossRefGoogle Scholar
  23. 23.
    Li W, Ren YH, Zhou WL, Zhou ZX, Xiao H CN Patent, 201611082459.6, 2018-03-13Google Scholar
  24. 24.
    Li W (2014) Research on key technology of high speed and precision micro-spindle driven by air. Hunan University. Chinese, ChangshaGoogle Scholar
  25. 25.
    Aristizabal-Ochoa JD (2004) Timoshenko beam-column with generalized end conditions and nonclassical modes of vibration of shear beams. J Eng Mech 130:1151–1159. CrossRefGoogle Scholar
  26. 26.
    Li W, Li ZP, Ren YH (2018) Error analysis of high-speed precision micro-spindle equipped with micro-tool in mechanical micro-grinding. Int J Adv Manuf Technol 97:1–11. CrossRefGoogle Scholar

Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of Mechanical and Vehicle EngineeringHunan UniversityChangshaChina

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