Experimental and Numerical Dynamic Identification of an Aerostatic Electro-Spindle
Source abstract
Abstract
This paper proposes a method to experimentally identify the main modal parameters, i.e., natural frequencies and damping ratios, of an aerostatic spindle for printed board circuit drilling. A variety of methods is applied to the impulse-response function of the spindle in the presence of zero rotational speed and different supply pressures. Moreover, the paper describes the non-linear numerical model of the spindle, which consists of a four-degree-of-freedom (DOF) rigid and unsymmetrical rotor supported by two aerostatic bearings. The main goal of the work is to validate the developed non-linear numerical model through the proposed identification procedure and the performed experimental tests. The comparison proves satisfactory, and the possible sources of uncertainty are conjectured.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Tribology and Lubrication Engineering · Magnetic Bearings and Levitation Dynamics · Hydraulic and Pneumatic Systems
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Politecnico di Torino, Department of Mechanical and Aerospace Engineering, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
Funding
Carbomech company
References (32)
Show source-provided references
1. International status of thermal error research10.1016/S0007-8506(07)63001-7 ↗
2. Ultrahigh-speed micro-milling end mill with shank directly supported by aerostatic bearings10.1299/jamdsm.6.979 ↗
3. Gill, D.D., Ziegert, J.C., Jokiel, B., Pathak, J.P., and Payne, S.W. (2004). Next Generation Spindles for Micromilling.
4. Knapp, B., and Arenson, D. (2014, January 20–25). Dynamic characterization of a micro-machining spindle. Proceedings of the 10th International Congress on Membrane and Membrane Process ICOMM, Suzhou, China.
5. Dynamics of ultra-high-speed (UHS) spindles used for micromachining10.1016/j.ijmachtools.2014.07.007 ↗
6. Dynamic stability prediction of spherical spiral groove hybrid gas bearings rotor system10.1115/1.4033453 ↗
7. Al-Bender, F. (2021). Air Bearings: Theory, Design and Applications, John Wiley & Sons.10.1002/9781118926444 ↗
8. On the Stability of Rotors in Cylindrical Journal Bearings10.1115/1.3658698 ↗
9. Sternlicht, B., Poritsky, H., and Arwas, E. (1959, January 26–28). Dynamic stability aspects of cylindrical journal bearings using compressible and incompressible fluids. Proceedings of the First International Symposium on Gas Lubricated Bearings, Office of Naval Research, Washington, DC, USA.
10. Linearized ph stability theory for translatory half-speed whirl of long, self-acting gas-lubricated journal bearings10.1115/1.3656925 ↗
11. Linearized PH stability theory for finite length, self-acting gas-lubricated, plain journal bearings10.1115/1.3650606 ↗
12. The effects of spindle vibration on surface generation in ultra-precision raster milling10.1016/j.ijmachtools.2013.04.005 ↗
13. Dynamic design methodology of high speed micro-spindles for micro/meso-scale machine tools10.1007/s00170-014-5887-3 ↗
14. A finite element analysis of air bearings applied in compact air bearing spindles10.1016/j.procir.2017.03.337 ↗
15. Measurements of the rotordynamic response of a rotor supported on porous type gas bearing10.1115/1.4039730 ↗
16. A simplified and consistent nonlinear transient analysis method for gas bearing: Extension to flexible rotors10.1115/1.4029709 ↗
17. Modeling and identification of gas journal bearings: Self-acting gas bearing results10.1115/1.1472458 ↗
18. Modeling and Identification of Gas Journal Bearings: Externally Pressurized Gas Bearing Results10.1115/1.1924425 ↗
19. Hassini, M.A., and Arghir, M. (2014). A New Approach for the stability analysis of rotors supported by gas bearings. J. Eng. Gas Turbines Power, 136.10.1115/1.4025483 ↗
20. Robust rotor dynamics for high-speed air bearing spindles10.1016/j.precisioneng.2014.12.008 ↗
21. Stability analyses and experiments of spindle system using new type of slot-restricted gas journal bearings10.1016/j.triboint.2003.12.014 ↗
22. Czolczynski, K. (1999). Rotordynamics of Gas-Lubricated Journal Bearing Systems, Springer.10.1007/978-1-4612-1518-9 ↗
23. Externally pressurized gas bearings: A comparison between two supply holes configurations10.1016/j.triboint.2008.06.014 ↗
24. Nonlinear study on a rigid rotor supported by herringbone grooved gas bearings: Theory and validation10.1016/j.ymssp.2020.106983 ↗
25. Zachariadis, D.C. (2008, January 9–13). Insights Into Discrepancies Between Results of Nonlinear and Linear Vibration Analyses of Rigid Rotors on Journal Bearings. Proceedings of the Turbo Expo: Power for Land, Sea, and Air, New York, NY, USA.10.1115/GT2008-51084 ↗
26. High-speed electrospindle running on air bearings: Design and experimental verification10.1007/s11012-008-9135-5 ↗
27. An experimental study of high-speed rotor supported by air bearings: Test RIG and first experimental results10.1016/j.triboint.2005.07.013 ↗
28. Belforte, G., Colombo, F., Raparelli, T., Trivella, A., Viktorov, V., and Villavicencio, R. (2013, January 8–13). High-speed rotors with elliptic gas journal bearings. Presented at the Proc. of the 5th World Tribology Congress, Torino, Italy.
29. Den Hartog, J.P. (1985). Mechanical Vibrations, Courier Corporation.
30. Genta, G. (2009). Vibration Dynamics and Control, Springer.10.1007/978-0-387-79580-5 ↗
31. Ewins, D.J. (2009). Modal Testing: Theory, Practice and Application, John Wiley & Sons.
32. Discharge coefficients of orifice-type restrictor for aerostatic bearings10.1016/j.triboint.2006.05.003 ↗