Vibration analysis of roller linear guide's contact interface

CHENG Jian-ping， YANG Jia-jun， CHENG Yuan-xiong， ZHAO Mei-ling
（School of Mechanical Design and Theory， Huazhong University of Science and Technology， Wuhan 430074， China）

Abstract： In order to realize the accurate calculation of the linear rolling guide's overall dynamics performance，the dynamic model of the linear rolling guide involving the contact interface was established. Based on roller linear guide as the research object，spring element was used. The Palmgren's experience formula was applied to calculate the stiffness in equivalent method. After the relationship between the displacement of the spring and the general coordinates of the system was built，the system's vibration differential equation was established by using Lagrange equation. Finally，with the dynamics simulation software ADAMS，the dynamic model was created and the natural frequency of the system and its corresponding vibration mode were calculated. The results indicate that the system has a high frequency which is consistent with the high stiffness of roller linear guide，and the dynamic model can be used in some other dynamic analysis.
Key words： roller linear guide； contact interface； Palmgren empirical formula； ADAMS