基于拓扑优化的加工中心立柱轻量化设计

The lightweight design for high-speed machining center of column Based on the topological optimization

本文以加工中心立柱为研究对象,建立有限元模型、进行了静力学和模态分析,并通过模态实验验证了有限元模型的正确性。在此基础上,得到优化设计需满足的动静态性能指标。在前四阶固有频率和安装尺寸的约束下,建立了立柱拓扑优化数学模型,通过迭代计算得到用于指导结构优化的密度云图,并对优化结果进行了可制造化处理和动静态仿真分析。结果表明,立柱的质量较原设计减轻,实现了结构的轻量化设计。

The research object is machining center . Set up the finite element model of the machine tool column and done static and modal analysis. Verified the correctness of the finite element through the mo- dal experiment model. On the basis of the above, got the performance indicators of dynamic and static which column structure optimization need to meet. To established the structural topology optimization mathematical model on the condition of volume and first 4 natural frequency. Through the iterative calcu- lation and got the cloud density pictures which used to guide optimizing. Then Done manufacturing chem- ical processing of the optimum result and dynamic and static simulation analysis. The results show that the quality of the column reduce. Completed the lightweight design of the＇ structure.