立式加工中心立柱多目标优化设计  

Multi-objective Optimization Design for Column of Vertical Machining Center

作　　者：杨絮娜 彭晋民[1,2] 

机构地区：[1]福州大学研究生院机械工程及自动化学院,福建福州350116 [2]福建工程学院机械与汽车工程学院,福建福州350116

出　　处：《机床与液压》2015年第1期130-135,共6页Machine Tool & Hydraulics

基　　金：国家科技支撑计划课题(2012BAF12B15)

摘　　要：在PROE和ANSYS Workbench的平台上建立VL855加工中心立柱结构的参数化模型,进行Static Structural和Modal分析;通过灵敏度分析选定立柱的壁厚、导轨面凸台厚度、筋板厚度、螺栓槽间距为优化的设计变量,立柱的质量、最大变形、第一阶段振型作为目标变量,进行多目标优化。结果表明:优化后,立柱质量减少5.2%,立柱在同样载荷情况下变形量与优化前变形量相近,其低阶模态有所提高,满足工作状态动态要求。PROE and ANSYS Workbench platform were selected for parametric modeling of the vertical column structure of VL855 type machining center. The Static Structural and Modal analysis were carried out. Through sensitivity analysis, the column wall thickness、 the boss thickness of guide surface、 inner rib thickness and bolt slot pitch were selected to optimize the design variables. Multi-objective optimization was applied by taking the weight, the maximum deformation and the first stage vibration mode of the col-umn as objective variables. The results show that the weight of column is decreased by 5-2% after optimization. The column deformation is close to the deformation before optimization in the same load case, and the lower stage modes are improved in a certain extend, which meet the dynamic requirements in working condition.

关 键 词：VL855加工中心 静态结构 模态 多目标优化 

分 类 号：TB16[天文地球—地质学]