期刊
NONLINEAR DYNAMICS
卷 103, 期 1, 页码 699-714出版社
SPRINGER
DOI: 10.1007/s11071-020-06139-8
关键词
Linear guide; Dynamic reliability; Guideway stiffness; Wear model; Precision
资金
- National Natural Science Foundation of China [51835001]
- National Major Scientific and Technological Special Project for High-grade CNC and Basic Manufacturing Equipment'' of China [2018ZX04032-001]
This paper presents a dynamic reliability model for linear guideways for predicting their lifespan by considering wear and profile error, and developing a dynamic stiffness model based on different load conditions and operation time. The reliability of linear guideways is solved using the Monte Carlo method, with simulation results validating experimental data and engineering experience.
This paper devotes to providing a dynamic reliability model for linear guideways for the whole life. Since a linear guide is always worn, the wear degradation of the linear guide is established. Moreover, the profile error of rail is considered. To get the dynamic behavior of linear guides precisely, we developed a dynamic stiffness model of the system in terms of different load conditions and operation time. The reliability model with variant stochastic parameters is proposed according to the contact characteristics of linear guides. The Monte Carlo method is adopted to solve the reliability of linear guides. The simulation results show the reliability curve agrees with the experimental results, as well as the engineering experience in practice. The proposed model can be well applied to the reliability prediction for linear guideways.
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