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对数控车削中心床鞍的结构轻量化设计方法进行了研究。基于机床在切削作用下的典型工况,分析其载荷和边界条件;建立体积约束下的床鞍结构多工况静态性能和动态性能多目标拓扑优化数学模型,根据拓扑优化结果构建床鞍的优化概念模型;利用结构优化设计的思想对概念模型进行结构刚度设计,最终为企业提供了新的床鞍结构方案;在保证床鞍刚度和动态性能的前提下,床鞍的质量减少了14.33%,表明该设计方法能够有效实现结构轻量化设计。
The design of lightweight structure of the CNC turning center saddle was studied. Based on the typical working conditions of the machine under cutting action, the load and boundary conditions are analyzed. The static and dynamic performance of the saddle structure with multi-conditions under volume constraint is established. The multi-objective topology optimization mathematical model is established, and the optimization of the saddle is constructed based on the topology optimization results The concept model of structural optimization is used to design the structural stiffness of the conceptual model, which ultimately provides the enterprise with a new saddle structure scheme. The saddle saddle quality is reduced by 14.33% while ensuring the rigidity and dynamic performance of the saddle. It shows that the design method can effectively realize the lightweight design of the structure.