轻质多孔仿生结构机床工作台性能分析  

Performance analyses of machine tool worktable with a lightweight porous bionic structure

作　　者：张希峰 巩彬 蒋鑫 梁刚 毕方淇 张立凯 宁新杰 ZHANG Xifeng;GONG Bin;JIANG Xin;LIANG Gang;BI Fangqi;ZHANG Likai;NING Xinjie(Zibo Institute of Agricultural Machinery Research,Zibo 255086,China)

机构地区：[1]淄博市农业机械研究所,山东淄博255086

出　　处：《邵阳学院学报（自然科学版）》2023年第4期48-54,共7页Journal of Shaoyang University：Natural Science Edition

摘　　要：为提高机床工作台的静态和动态性能,将轻质多孔和仿竹结构结合起来运用到工作台设计中。对轻质多孔仿生工作台和原工作台按照3种极限工况进行静力学分析,得到总变形、各方向变形。通过模态分析得到固有频率和振型。分析结果显示,与原工作台相比,轻质多孔仿生工作台在3种工况下各方向变形和总变形均降低。轻质多孔仿生工作台前5阶固有频率都明显提高,其中,第3、4阶分别提高18.3%和20.4%。谐响应分析结果得到的易发生共振的频率与模态分析得到的固有频率一致。工作台质量减小11.8 kg,降低为4.3%。In order to improve the static and dynamic performance of the machine tool worktable,the lightweight porous and bamboo imitation structure was combined into the table design.The static analysis of the light porous bionic worktable and the original worktable was carried out according to three extreme conditions,and the total deformation and deformation in all directions were obtained.The natural frequency and vibration mode were obtained by modal analysis.The results show that the deformation in all directions and the total deformation of the lightweight porous bionic worktable decreases under three working conditions.The natural frequencies of the first five steps of the lightweight porous bionic worktable are significantly improved,and the third and fourth orders increase by 18.3%and 20.4%,respectively.The resonance frequency obtained from the harmonic response analysis results is consistent with the natural frequency obtained from the modal analysis.The mass of the worktable decreases by 11.8 kg,and the reduction rate is 4.3%.

关 键 词：仿生工作台 多孔结构 静刚度 动态性能 

分 类 号：TH16[机械工程—机械制造及自动化]