摘要
以翻板加工中心工作台为研究对象,在满足装配精度与刚性要求的前提下,通过参数化建模、有限元分析和平面度检测获得台面静、动态性能指标。采用CCD试验设计构建全二阶响应面模型,定量研究设计参数对台面变形、一阶固有频率、整体质量及平面度的影响,进而利用NSGA-Ⅱ多目标遗传算法在平面度约束下实现结构轻量化与动态性能优化。优化结果显示,工作台质量由5552 kg降至4344 kg,一阶固有频率降低(更远离主轴激振频率),台面平面度约0.0176 mm,满足装配需求。研究证明该方法在复杂机床设计中具有较高应用价值。
This study takes the worktable of a flip-type machining center as its research subject.Under the premise of meeting assembly precision and rigidity requirements,the static and dynamic performance indicators of the table surface are obtained through parametric modeling,finite element analysis,and flatness measurement.A full second-order response surface model is constructed using the CCD experimental design to quantitatively investigate the impact of design parameters on table deformation,the first natural frequency,overall mass,and flatness.Subsequently,the NSGA-Ⅱmulti-objective genetic algorithm is employed under flatness constraints to achieve both structural lightweighting and dynamic performance optimization.The optimization results reveal that the worktable mass is reduced from 5552 kg to 4344 kg,with an decrease in natural frequency and a table surface flatness of approximately 0.0176 mm,thereby meeting the assembly requirements.These findings demonstrate the significant practical value of this method in the design of complex machine tools.
作者
李嘉炜
赛云祥
非浩宇
王超
欧阳志远
LI Jiawei;SAI Yunxiang;FEI Haoyu;WANG Chao;OUYANG Zhiyuan(China National Machinery Group Yunnan Branch Co.,Ltd.,Kunming 650031,China;Yunnan Provincial Key Laboratory of Mechatronics Application Technology,Kunming 650031,China;Huazhong university of science and technology school of mechanical science and engineering,Wuhan 430000,China)
出处
《机械工程与自动化》
2025年第3期12-17,共6页
Mechanical Engineering & Automation
基金
云南省科技厅重大科技专项计划项目(202402AC080005)。
关键词
翻板加工中心
参数化建模
轻量化设计
多目标优化
flip-type machining center
parametric modeling
lightweight design
multi-objective optimization
