Finite element model for static characteristic analysis of rolling linear guide

Abstract

From the designer’s point of view, the static precise finite element model of the single ball-raceway, the overall and the unit slice of the rolling linear guide (RLG) are established based on the limited data obtained. According to the contact characteristics of a single ball-raceway, Hertz theory and finite element method (FEM) are used to determine the maximum contact stress and deformation of RLG under a specific preload value. The specific modeling process of the overall and unit slice finite element model of the RLG is described in detail as well. The comparative analysis results indicate that the unit slice finite element model can take place of the overall finite element model at the static level. On the basis of previous research, the mapping laws between external load, preload value, curvature ratio, the carriage’s wall thickness, the guide’s width, and static mechanical properties of RLG are studied. The combined application of these precise finite element models can solve the problems of large calculation and low efficiency in statics of RLG. Meanwhile, it also provides a new way to achieve high-efficiency and high-rigidity design of RLG from the source.

Analysis of Error Sources of a Torque and Rotation Angle Calibration Unit Based on Statics

“…Based on the structure designed by the comprehensive experimental system of the indexing mechanism, parametric modeling of its components is carried out. Through the parametric model, the static analysis is carried out to explore the factors that affect the calibration results, such as the specific size, material stiffness, deformation, friction, and other factors of each component in the structure [3] .…”

Investigating the Interference Fit Requirements for Customized Dual-Fit Fasteners in a Linear Guide Rail Mounting Application

“…The article concludes by reminding readers that by paying attention to these three factors, they can ensure optimal performance and longevity of their linear guide rails. Wei et al (2021) discuss the establishment of a static precise finite element model for the rolling linear guide (RLG) using the Hertz theory and finite element method (FEM). The article describes the specific modeling process of the overall and unit slice finite element models of the RLG and provides comparative analysis results.…”