组合赋权VIKOR法的重型机床动立柱设计优化  

Design Optimization of Heavy-duty Machine Dynamic Columns Using Combination Weighting VIKOR Method

作　　者：朱金波[1] 王秋林[1] 李勇[1] 王玲[2] 殷国富[2] ZHU Jin-bo;WANG Qiu-lin;LI Yong;WANG Ling;YIN Guo-fu(Engineering Technology Center,Chengdu Aeronautic Polytechnic,Chengdu 610100,China;School of Mechanical Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]成都航空职业技术学院工程实训中心,成都610100 [2]四川大学机械工程学院,成都610065

出　　处：《组合机床与自动化加工技术》2021年第6期141-145,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家科技重大专项(2017ZX04020001-005);四川省科技计划项目(2018GZ0109);四川省教育厅资助项目(18ZB0058);成都航空职业技术学院校级自然科研项目(062016)。

摘　　要：针对目前研究人员在进行立柱结构件优化设计时,重点放在立柱局部的结构或尺寸优化方面而对立柱内部筋板结构布局或整体结构布局研究不足,难以满足研发高精度、高可靠性重型机床对立柱高刚度、高抗振性、轻量化等综合需求,提出了组合赋权VIKOR法的重型机床动立柱设计优化方法。该方法综合考虑立柱传统结构、仿生结构、新材料等方面后设计了8种动立柱,然后利用有限元软件对其进行优化并计算了关键性能评价指标数值,最后使用组合赋权VIKOR法找出了最优方案。优化后的动立柱和原方案相比,质量减轻10.4%,1阶固有频率提升74.7%,总体方向静变形量减小31%、热变形量减小13.8%,表明优化后动立柱静态性能和动态性能显著提升,验证了组合赋权VIKOR法的重型机床动立柱设计优化方法有效可行。At present,when researchers are optimizing the design of column structural components,they focus on the optimization of the partial structure or size of the columns.However,the research on the internal rib structure or the overall structural layout of the columns is insufficient,and it is difficult to meet the development of high-precision,high-reliability heavy-duty machine tools on the comprehensive requirements of high rigidity,high vibration resistance,and light weight of the column.To address this problem,a design optimization method for dynamic column of heavy-duty machine tools with combination weighting VIKOR method is proposed.The method comprehensively considering the traditional structure,the bionic structure,and the new materials,etc after design the eight columns,then the finite element analysis software is used to optimize the eight dynamic columns,and the values of the key performance evaluation indicators of each scheme are calculated.Finally,the combination weighting VIKOR method is used to find the optimal design scheme.Compared with the original scheme,the weight of the optimized dynamic column is reduced by 10.4%,the first-order natural frequency is increased by 74.7%.The overall direction static deformation is reduced by 31%,and the thermal deformation is reduced by 13.8%,indicating that the static performance and dynamic performance of the dynamic column are significantly improved after optimization.In addition,the combination weighting VIKOR method for design optimization of heavy-duty machine tool dynamic columns is verified to be effective and feasible.

关 键 词：组合赋权 VIKOR法 立柱 优化设计 

分 类 号：TH122[机械工程—机械设计及理论] TG65[金属学及工艺—金属切削加工及机床]