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机床基础大件支撑预变形设计方法研究

何改云 李素乾 郭龙真 张大卫

何改云, 李素乾, 郭龙真, 张大卫. 机床基础大件支撑预变形设计方法研究[J]. 机械科学与技术, 2018, 37(1): 70-75. doi: 10.13433/j.cnki.1003-8728.2018.0111
引用本文: 何改云, 李素乾, 郭龙真, 张大卫. 机床基础大件支撑预变形设计方法研究[J]. 机械科学与技术, 2018, 37(1): 70-75. doi: 10.13433/j.cnki.1003-8728.2018.0111
He Gaiyun, Li Suqian, Guo Longzhen, Zhang Dawei. Research on Design Methodology for Support Pre-deformation of Large Machine Tools Body[J]. Mechanical Science and Technology for Aerospace Engineering, 2018, 37(1): 70-75. doi: 10.13433/j.cnki.1003-8728.2018.0111
Citation: He Gaiyun, Li Suqian, Guo Longzhen, Zhang Dawei. Research on Design Methodology for Support Pre-deformation of Large Machine Tools Body[J]. Mechanical Science and Technology for Aerospace Engineering, 2018, 37(1): 70-75. doi: 10.13433/j.cnki.1003-8728.2018.0111

机床基础大件支撑预变形设计方法研究

doi: 10.13433/j.cnki.1003-8728.2018.0111
基金项目: 

"高档数控机床与基础制造装配"科技重大专项(2015ZX04005001)资助

详细信息
    作者简介:

    何改云(1965-),教授,博士,博士生导师,研究方向为加工质量在机检测与控制,CAD/CAM/CAI集成技术,hegaiyun@tju.edu.cn

Research on Design Methodology for Support Pre-deformation of Large Machine Tools Body

  • 摘要: 针对精密机床装配过程中导轨基面静变形对几何精度的影响,提出一种预先消除该静变形的方法,即对整机进行静力学分析,获得装配后导轨基面的静变形,通过调整支撑方式使该变形在装配前呈现,便于将此变形提前消除。以一精密卧式加工中心为例,详细阐述了该方法,该方法的关键是通过优化支撑方式获得导轨基面最终静变形。以支撑点的定位尺寸为设计变量,采用正交试验的设计方法选取样本点构建BP神经网络模型,利用遗传算法对支撑位置进行优化,使导轨基面呈现目标变形。结果表明,采用优化后的支撑方式,导轨基面变形和目标变形形状相同,且最大变形分别为7.982 8 μm和8.2 μm,两者之间的误差为0.21 μm,取得了较好的优化效果。
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出版历程
  • 收稿日期:  2016-09-17
  • 刊出日期:  2018-01-15

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