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桥式龙门铣床横梁结构设计与优化 预览

Structure design and optimization for crossbeam of bridge gantry milling machine
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摘要 横梁作为桥式龙门铣床的主要运动部件,其结构设计的优劣直接影响机床整机的工作性能。为此,提出了一种基于正交试验设计、改进模糊综合评价和尺寸灵敏度分析的横梁结构设计与优化方法。针对横梁多因素多水平的结构设计特点,采用正交试验设计挑选出8种具有代表性的参数组合作为横梁结构设计方案。运用改进模糊综合评价法对有限元仿真数据进行处理,确定参数组合为"箱中箱式井型20mm线轨"的横梁优选方案,并对其关键设计尺寸进行灵敏度分析与优化,得到横梁结构具体的设计尺寸。优化后,横梁的静力学性能和抗振性能得到明显改善,并实现了轻量化设计,对机床横梁的实际制造起到了指导作用。研究结果表明,所提出的横梁结构设计与优化方法具有较强的工程实用性,为数控机床其它关键零部件的设计提供了新思路。 Crossbeam is the main moving part of bridge gantry milling machine,and its structure design directly affects the working performance of machine tool.Therefore,a structure design and optimization method for crossbeam based on orthogonal experimental design,improved fuzzy comprehensive evaluation and size sensitivity analysis was proposed.According to the multi-factor and multi-level characteristics of crossbeam structure design,eight kinds of representative parameter combinations were selected as the structure design scheme of crossbeam by orthogonal experimental design.The improved fuzzy comprehensive evaluation method was used to process the finite element simulation data,so that the optimum selection scheme of crossbeam with parameters combination"box in box-well-20 mm-linear guideway"was determined.And the sensitivity analysis and optimization of its key design sizes were carried out to obtain the specific of crossbeam structure design size.After optimization,the static performance and anti-vibration performance of crossbeam were improved obviously while the lightweight design of crossbeam was also realized,which played a guiding role in the actual manufacture of machine tool crossbeam.The research result shows that the proposed structure design and optimization method for crossbeam has high engineering practicability,and it also provides a new idea for the design of other key parts of CNC machine tools.
作者 高志来 邱自学 任东 崔德友 徐新朋 GAO Zhi-lai;QIU Zi-xue;REN Dong;CUI De-you;XU Xin-peng(School of Mechanical Engineering,Nantong University,Nantong226019,China;Nantong Guosheng Intelligent Technology Group Co.,Ltd.,Nantong226003,China)
出处 《工程设计学报》 CSCD 北大核心 2019年第1期56-64,共9页 Journal of Engineering Design
基金 江苏省科技成果转化专项资金资助项目(BA2015126).
关键词 桥式龙门铣床 横梁 正交试验设计 有限元分析 改进模糊综合评价法 尺寸优化 bridge gantry milling machine crossbeam orthogonal experimental design finite element analysis improved fuzzy comprehensive evaluation method size optimization
作者简介 高志来(1993-),男,江苏徐州人,硕士生,从事机电一体化装备及测控技术、数控机床研发与应用研究,E-mail:1141056612@qq.com;通信联系人:邱自学(1963-),男,江苏南通人,教授,博士生导师,博士,江苏省有突出贡献中青年专家,从事机电一体化装备与测控技术、智能结构及其健康监测技术、数控机床研发与应用等研究,E-mail:773953998@qq.com,https://orcid.org/0000-0003-1189-8218.
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