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常规设计下的冷镦机床身存在较大的减重空间。针对冷镦机床身的结构和工作特点,以床身整体应变能最小为目标函数,以体积、最大应力、最大位移和固有频率为约束,建立多约束拓扑优化模型;并以某型号冷镦机床身为例,运用Abaqus6.11实现该床身多约束拓扑优化过程;在拓扑优化的基础上,对床身进行再设计,并着重围绕再设计中矩形孔过渡圆角半径的不同取值展开分析和比较,最终确定较优的设计方案。再设计结果显示,在较好满足床身各项静态和动态性能指标的前提下,床身体积减少可达9.6%以上。
Conventional design of the cold heading machine bed there is a greater weight loss space. According to the structure and working characteristics of the cold heading machine bed, taking the minimum strain energy of the bed as the objective function, a multi-constrained topology optimization model was established by the constraints of volume, maximum stress, maximum displacement and natural frequency. As an example, Abaqus6.11 is used to realize the multi-constrained topological optimization of the bed. Based on the topology optimization, the bed is redesigned with emphasis on the different values of the fillet radii of rectangular holes in the re-design And comparison, and ultimately determine the optimal design. The re-design results show that under the premise of better satisfying the static and dynamic performance of the bed, the bed volume can be reduced by more than 9.6%.