针对磨床中常见的螺栓结合面、导轨结合面,提出并建立三维弹簧-阻尼单元和接触单元的结合面有限元模型,并应用于某高精度磨床的动态特性仿真分析,同时对该磨床进行动态性能测试。将实验数据与有限元分析结果进行对比,验证模型的正确性。所得结论为基于结合面机床的动态特性分析提供了一种有效的有限元模型,对进一步整机动态特性分析和优化设计具有重要意义。 According to the common bolt joint surface and guide rail joint surface of grinder, the finite element model of the joint surface of three-dimensional spring-damper unit and contact unit is proposed and applied to the dynamic characteristic simulation analysis of a high-precision grinding machine. Meanwhile, Performance Testing. The experimental data and the results of finite element analysis are compared to verify the correctness of the model. The conclusions obtained provide an effective finite element model based on the dynamic characteristic analysis of the machine tool on the joint surface, which is of great significance to the further analysis and optimization of the whole machine dynamic characteristics.