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http://dx.doi.org/10.7736/KSPE.2013.30.3.260

A Fundamental Study on the Development of a Variable Preload Device Using Toggle Joint Mechanism  

Choi, Chi Hyuk (R&D Cluster, Changwon National Univ.)
Cha, Na Hyeon (Department of Mechanical Design & Manufacturing Engineering, Changwon National Univ.)
Lee, Choon Man (Department of Mechanical Design & Manufacturing Engineering, Changwon National Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.30, no.3, 2013 , pp. 260-265 More about this Journal
Abstract
To increase the machine accuracy by improving the stiffness of spindle bearings, preload was applied to the spindle bearings. The methods of fixed position preload, convertible preload, constant pressure preload, and variable preload are used to apply the preload to the spindle bearing. The previous studies performed by the author of this study were variable preload methods using rubber pressure and centrifugal force based on mechanical systems. This study proposed a toggle joint mechanism that could be applied to variable preload method using centrifugal force and rubber pressure to increase the preload. Also, a finite element analysis was conducted to predict the deformation of the rubber and change of the preload. And the analysis results showed that the preload by the device using rubber pressure only was increased by the toggle joint mechanism using rubber pressure.
Keywords
Variable Preload; Toggle Joint Mechanism; Rubber Force; Machine Tools; Spindle; Bearing;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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