吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (6): 1831-1835.doi: 10.13229/j.cnki.jdxbgxb201506015

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Computation of the relationship between bearing preload of lunar-based two-dimensional turntable and system stiffness

WANG Zhi   

  1. Changchun Institute of Optics, Fine Mechanics and Physics,Chinese Academy of Sciences, Changchun 130033, China
  • Received:2014-06-17 Online:2015-11-01 Published:2015-11-01

Abstract: The relationship between bearing preload and system stiffness was investigated under the condition that the structure turntable was fixed. The relationships among bearing preload, bearing stiffness and shafting stiffness were analyzed. The computation formula between bearing preload and shafting natural frequency was deduced. Using finite element analysis the relationship curve between bearing preload and system natural frequency was obtained. Natural frequency tests of a two-dimensional turntable verified the validity of the proposed method, and an effective method was provided to determine the optimum bearing preload.

Key words: mechanical design, extreme ultraviolet camera, two-dimensional turntable, bearing, preload, stiffness

CLC Number: 

  • TH133.3
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