TX-1600G复合式镗铣加工中心铣削横梁结构的拓扑优化设计

Topology Optimization Design for Milling Beam Structure in TX-1600G Compound Boring and Milling Center

以减小加工中心横梁的固有频率、质量、刚度对加工精度和工作效率的影响为目的,应用结构拓扑优化法对TX-1600G镗铣加工中心的横梁进行研究.通过建立镗铣横梁的有限元模型,以应变能和模态特征值为综合目标函数,以一定体积分数为约束条件,进行拓扑优化并综合考虑加工工艺等因素,使之具有高动静态刚度、高固有频率、高静态强度和较小总质量的横梁结构.通过横梁新旧结构的数据对比,验证该结构优化法的有效性,为加工中心其他关键部件的结构优化提供了参考.

In order to reduce the influence of the natural frequency,weight and rigidity of the beam in the machining center on the machining accuracy and working efficiency,this paper studies the beam in the TX-1600G boring and milling center by using the method of structural topology optimization.By establishing a finite element model,boring and milling beams with strain energy and modal characteristic values for the comprehensive objective function,it keeps a certain volume ratio as constraint conditions,and to carry out the topology optimization and consideration of other factors such as processing technology,to make it with high dynamic and static stiffness,natural frequency,high static strength,and lower the overall weight of the beam structure.By comparing the data of the old and new structures of the beam,the validity of the optimization method in structural optimization is verified,which provides a reference for the structural optimization of other key components in the machining center.