【摘要】 针对现有车铣复合木工机床立柱结构设计中模型复杂、动态性能不足及求解时间长的问题，提出一种结合静力学分析、模态分析、相关性分析和MOGA算法响应面优化设计方法。对原始立柱进行静力学分析和模态分析，结果表明原始立柱易产生共振，降低了机床的动态性能;参照竹子结构设计一种新型仿生立柱结构，通过相关性分析筛选设计变量，以立柱的总变形、最大应力和一阶固有频率作为优化目标构建响应面进行分析，利用MOGA遗传算法输出Pareto最优解。优化结果表明:车铣复合木工机床立柱的最大变形减小了5.98%，最大应力减小了9.06%，一阶固有频率提高了2.64%，车铣复合木工机床静动态性能均有所提升。更多还原

【Abstract】 Aiming at the problems of complex models,insufficient dynamic performance and long solution time in the column structure design of the existing turning and milling compound woodworking machine tools,an optimization design method combining static analysis,modal analysis,correlation analysis and the response surface of the MOGA algorithm is proposed. Static analysis and modal analysis were carried out on the original column. The results show that the original column is prone to resonance,reducing the dynamic performance of the machine tool. A new bionic column structure was designed with reference to the bamboo structure. The design variables were screened through correlation analysis. The total deformation,maximum stress and first-order natural frequency of the column were taken as the optimization objectives to construct the response surface for analysis,and the Pareto optimal solution was output using the MOGA genetic algorithm. The optimization results show that the maximum deformation of the column of the turning and milling compound woodworking machine tool has decreased by 5. 98%,the maximum stress has decreased by 9.06%,the first-order natural frequency has increased by 2.64%,and both the static and dynamic performances of the turning and milling compound woodworking machine tool have been improved.更多还原