基于元结构的数控立式车床床身静动态特性分析与优化  

Dynamic and Static Characteristics Analysis and Optimization of Vertical Lathe Base based on Unit Structure

作　　者：王晓煜[1] 张洋[1] 李荣华[1] 周颖[1] 

机构地区：[1]大连交通大学机械工程学院,辽宁大连116021

出　　处：《大连交通大学学报》2017年第1期62-66,共5页Journal of Dalian Jiaotong University

摘　　要：根据床身内部两种元结构的尺寸特点,采用参数化优化设计方法找出其最优结构参数.以提高床身低阶模态固有频率和轻量化为目标,对床身内部筋板参数进行优化,并提出了床身的两种优化设计方案.通过将这两种方案进行综合,得到最终的床身结构优化设计方案.最终床身一阶固有频率提高了14.91 Hz,质量下降了480 kg,并且其静刚度也得到了提升.According to the dimension characteristics of the internal structure of the lathe base, parametric optimization design method is used to find the optimal size of the unit structure. In order to raise natural frequencies and light weight, two optimization designs of the lathe base is proposed. These two kinds of schemes are combined to get the final optimization scheme of the lathe base. Finally, the fist order natural frequency is increased by 14.91 Hz, and the bed weight is decreased by 480 kg, while the static stiffness is also increased significantly.

关 键 词：元结构 静动态特性 有限元分析 

分 类 号：TG519.1[金属学及工艺—金属切削加工及机床]