Author(s)

Y. Chen ¹, G. F. Hu ¹, X. S. Zhao ¹, D. W. Zhang ¹

Affiliation(s)

¹ School of Mechanical Engineering, Tianjin University, Weijin Road, Tianjin, China

Corresponding Author

Y. Chen

ABSTRACT

The non-repetitive run-out(NRRO) of ball bearing critically influences the rotational accuracy of a machine tool. The quality of manufacturing can be improved by reducing the value of NRRO. This article developed a new ball bearing measuring system to investigate the NRRO caused geometrical errors of the bearing parts include inner and outer races and balls. The characteristic of the proposed measuring system as follows:(1) A high-precision hydrostatic spindle is applied to drive the inner race of the test bearing to obtain the system accuracy; (2) Measurable and variable axial preload is adopted to simulate the operating condition of bearings; (3) A 2 degrees of freedom flexure hinge mechanism (2-DOF FHM) is used to prevent the outer race from rotating; (4) Two capacitive sensors are used to measure radial error of the test bearing to ensure nano resolution.

KEYWORDS

Angular Contact Ball Bearing, NRRO, Hydrostatic Spindle, Error Motion.

CITE THIS PAPER

Y. Chen, G.F. Hu, X.S. Zhao, D.W. Zhang. Development of Measuring System for the Non-Repetitive Run-Out(NRRO) of Ball Bearing. Journal of Engineering Mechanics and Machinery (2017) 2: 8-12.

REFERENCES

[1] D. L. Martin, A. N. Tabenkin, F. G. Parsons. (1995) Precision spindle and bearing error analysis. International Journal of Machine Tool & Manufacture, 2(35), 187-193.
[2] ASME B89.3.4-2010 Axes of rotation: methods for specifying and testing.
[3] G. H. Jang, Member, IEEE , D. K. Kim, and J. H. Han. (2001) Characterization of NRRO in a HDD Spindle System Due to Ball Bearing Excitation, IEEE TRANSACTION ON MAGNETICS, 37, 815-819. 
[4] S. Noguchi, T. Kanada. (2008) Development of measuring system for radial non-repetitive run-out (NRRO) and perception about present state of angular contact ball bearing for machine tools, Tribology International, 41, 1176-1180.
[5] E.R. Marsh. (2010) Precision Spindle Metrology, DEStech Publications.
[6] Z. Yang, J. Hong, J. Zhang, M. Y. Wang, and Y. Zhu. (2013) Nano-level instrumentation for analyzing the dynamic accuracy of a rolling element bearing”, Review of Scientific Instruments, 84, 125103.
[7] ISO 1132-2: 2001, Rolling bearings – Tolerances – Part 2: Measuring and gauging principles and methods.

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