Dynamic Behavior of All-Ceramic Spindle-Bearing Unit with Preload

Song Hua Li; Xue Li; Ming Hao Feng; Yu Hou Wu; Xiao Lin Jin

doi:10.4028/www.scientific.net/AMM.365-366.314

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 365-366Dynamic Behavior of All-Ceramic Spindle-Bearing...

Dynamic Behavior of All-Ceramic Spindle-Bearing Unit with Preload

Abstract:

Abstract. Because of the extraordinary physical properties of engineering ceramics such as high hardness, low thermal expansion, light weight and abrasion resistant, it accommodates very well with the high-speed and precision requirements of spindle-bearing unit. In order to prove the superior dynamic characteristic of the all-ceramic spindle-bearing unit bacause of the application of engineering ceramics in shaft and bearing of spindle system, the natural frequency and modes of the all-ceramic spindle-bearing unit were analyzed. In this study, spindle-bearing model was built and analyzed by the Finite Element Method(FEM) and Hertz theory, comprehensively considering both of the stiffness of bearing and the effect of preload, which was different from the tranditional spindle analysis model. The research results show that all-ceramic spindle-bearing unit has higher natural frequency and better dynamic characteristics compare of traditional steel spindle-bearing unit.

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Periodical:

Applied Mechanics and Materials (Volumes 365-366)

Pages:

314-317

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.365-366.314

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Online since:

August 2013

Authors:

Song Hua Li, Xue Li, Ming Hao Feng, Yu Hou Wu, Xiao Lin Jin

Keywords:

All-Ceramic Bearing, Ceramic Motorized Spindle, Dynamic Characteristic, Preload

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