Effect of Lubricant Starvation on the Tribo‐Dynamic Behavior of Linear Roller Guideway

Abstract

This paper presents an experimentally validated numerical approach linear roller guideways considering coupled vertical and horizontal (feed) motions and taking into account lubricant starvation. The inlet starvation is considered by incorporating potential flow method. Results show that starvation has pronounced effect on the lubricant film thickness, friction, and applied load on contact by up to 32%. Localised pressure values may vary by up to 100%. The severity of starvation effect is frequency dependent. It is also revealed that the starvation effect can be controlled by the amount of preload on linear guideway.

Development and design of intelligent lubricating equipment for feed systems

“…According to the measurement by ohm gauge, the higher the resistance, the thicker the oil film, and the major factor influencing the resistance was the oil film thickness. According to regression analysis, the resistivity increased with the oil film thickness [ 6 , 7 ].…”

An Inlet Computation Zone Optimization for EHL Line Contacts

“…By means of this measure of the inlet distance, they also presented an approximative expression to estimate the oil film thickness for both starved and fully flooded EHL contacts operating within the PE region. For continued work devoted to EHL and starvation effects in the PE region, see [17][18][19][20][21]. Examples of work considering starved and fully flooded conditions in the IR region are the ones by Anandan [22,23] and Biboulet [24], where the reduced radius of curvature was employed as a normalization of the computational domain that they used to numerically calculate the oil film thickness.…”