Study on Pre-Stress Cutting of Bearing Race and Its Machined Surface State

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Theoretical analysis and experiments on bearing race show that a suitable residual compressive stress on roll path of bearing race can prolong its contact fatigue life. However, residual tensile stress is often found on workpiece surface of bearing race. To actively control the residual stress state and improve fatigue life of bearing part, a new method of pre-stress hard cutting is applied. In this paper, the principle of pre-stress hard cutting for bearing race is introduced as well as the experiments on it. In the experiments, residual stress, hardness and roughness of machined surface are measured and analyzed. Moreover, micro-topography and texture characteristics of machined surface are investigated and experimental results are compared with that by grinding. It is found that we can get residual compressive stress and fine quality on machined surface of bearing race by pre-stress hard cutting and increase its productivity as well.

Info:

Periodical:

Materials Science Forum (Volumes 532-533)

Edited by:

Chengyu Jiang, Geng Liu, Dinghua Zhang and Xipeng Xu

Pages:

528-531

Citation:

B. Y. Ye et al., "Study on Pre-Stress Cutting of Bearing Race and Its Machined Surface State", Materials Science Forum, Vols. 532-533, pp. 528-531, 2006

Online since:

December 2006

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$38.00

[1] Z.H. Zhou: Principle of Metal Cutting (Shanghai Science and Technology Pubilshing Company, China 1993).

[2] Z.H. Zhou and D.T. Guo: Proc. of 9th International Conference on Production Research (Cincinnati, U.S.A., August 17-20, 1987).

[3] X.P. Zhang, Z.H. Liu and L.Q. Liu: Tool engineering Vol. 38 (5) (2004), p.19.

[4] X.C. Liu: Theoretic Research and Application for Precise Hard Cutting of Bearing (Thesis for Doctor's Degree of SCUT, China 2005). a) pre-stress hard turning surface b) pre-stress hard turning surface c) grinding surface (re=2. 5mm, Ra=0. 42µm) (re =0. 4mm, Ra=0. 54µm) (Ra=0. 35µm) Fig. 5 Machined surface state comparison for pre-stress hard turning and grinding (cutting condition: v = 48m/min, f = 0. 12mm/r, ap = 0. 25mm).

DOI: https://doi.org/10.4028/www.scientific.net/msf.862.26

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