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http://dx.doi.org/10.3795/KSME-A.2016.40.2.199

Formulation of Friction Forces in LM Ball Guides  

Oh, Kwang-Je (Dept. of Mechanical Engineering, Hanyang Univ.)
Khim, Gyungho (Ultra-Precision System Lab., Korea Institute of Machinery and Materials)
Park, Chun-Hong (Ultra-Precision System Lab., Korea Institute of Machinery and Materials)
Chung, Sung-Chong (Dept. of Mechanical Engineering, Hanyang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.40, no.2, 2016 , pp. 199-206 More about this Journal
Abstract
Linear motion (LM) ball guides with rolling contact are core units of feed-drive systems. They are widely applied for precision machinery such as machine tools, semiconductor fabrication machines and robots. However, the friction force induced from LM ball guides generates heat, which deteriorates positioning accuracy and incurs changes of stiffness and preload. To accurately analyze the effects and apply the results to precision machine design, mathematical modeling of the friction force is required. In this paper, accurate formulation of the friction force due to rolling, viscous, and slip frictions is conducted for LM ball guides. To verify the reliability of the developed friction model, experiments are performed under various assembly, load and velocity conditions. Effects of frictional components are analyzed through the formulated friction model.
Keywords
Friction Model; Hertz Contact; Linear Motion Ball Guide; Rolling Friction; Slip Friction; Viscous Friction;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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