Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2014 Vol: 6 Issue: 7

Analysis on static characteristics of linear rolling guide under tangential load

Abstract

Linear Rolling Guide not only bears normal load, but also tangential load when it is used actually. On the basis of Hertz Contact Theory, this essay firstly analyses the situation that the LR Guide bears tangential light load with four lines of balls. When the external load further increases, the essay analyses the situation that the guide bears heavy load with only two lines of balls, and perfects the tangential static stiffness model of the LR Guide. On the basis of it, aiming at the deficiency that the previous model just considered the balls’ elastic deformation, the essay put out a tangential static stiffness model of the LR Guide which considered the deformation of the rail, and the validity of the model is verified by experiment. At last, the essay studies the influences of preload and groove fitness on the tangential stiffness of LR Guide, providing the basis of choosing parameters when chooses LR Guide.