主轴箱静力学和热-结构耦合特性分析

Numerical Simulation Analysis for the Thermal-structural Coupling Characteristics of Head Frame

针对机床热-结构耦合变形严重影响加工精度和加工产品质量的问题,首先选取机床加工过程中的一个典型工况,对主轴箱进行了受力分析。根据主轴箱的工作情况,计算出了热参数。运用Workbench有限元软件对主轴箱分别进行静态和热-结构耦合仿真分析,得到了主轴箱的温度、形变和应力分布云图。对比仿真结果,探讨了外部静力载荷、温度场以及两者相互作用时对主轴箱应力应变的影响,提出了改善主轴箱热特性的措施,同时为其后期的结构优化提供了一定的技术依据。

To solve the problems that the thermal-structural coupling deformation of the machine tool has much effect on accuracy and quality of the products,this paper firstly chooses a typical working condition in the process of machining and gets the forces acting on the head frame.According to the working condition of the head frame,the thermal boundary parameters are calculated.The static and thermal-structural coupling simulation analysis are done by using FEA software Workbench.At last,comparing the results,the plans to reduce the thermal deformation are put forward,which provide some technical bases for structural optimistic.