立式加工中心主轴箱静动态特性分析及拓扑优化

主轴箱是立式加工中心的重要部件，其静动态特性对加工中心的加工精度以及平稳性有重要影响。以某型号立式加工中心主轴箱为研究对象，应用SolidWorks建立主轴箱的三维模型，利用ANSYS Workbench软件对其在典型工况下进行静动态特性分析。根据主轴箱静动态特性分析结果可对主轴箱结构进行优化设计。利用ANSYS Workbench中拓扑优化模块对主轴箱结构进行拓扑优化，根据拓扑优化结果以及实际工作情况，对主轴箱结构进行合理的改进。对比改进前后的分析结果可知:改进后主轴箱质量减少2.3%、最大等效应力减小3.34%，静刚度得到提高,达到优化目的。该研究结果为其他类型机床主轴箱优化设计提供参考

Static and Dynamic Characteristics Analysis and Topology Optimization of Spindle Box of Vertical Machining Center

Spindle box is an important part of the vertical machining center, and its static and dynamic characteristics have an important influence on the machining accuracy and smoothness of the machining center. A certain type vertical machining center spindle box was taken as the research object, SolidWorks was used to establish the 3D model of the spindle box, and ANSYS Workbench software was used to analyze the static and dynamic characteristics under typical working conditions. According to the static and dynamic characteristics analysis results of the spindle box,the structure of the spindle box could be optimized.The topology optimization module of ANSYS Workbench was used to optimize the spindle box structure.According to the topology optimization results and the actual working conditions, the spindle box structure was reasonably improved.The analysis results before and after improvement show that the improved spindle box mass is reduced by 2.3%,the maximum equivalent stress is reduced by 3.34%,and the static stiffness is improved,so the optimization purpose is achieved. The research results provide reference for the optimization design of other types of machine spindle box