短精密螺栓连接结构组合偏心预测及安装相位优化
Prediction of assembly eccentricity and optimization of installation phase for short precision bolted connection structures
张譍之 1孙惠斌 1颜诚 2况侨3
作者信息
- 1. 西北工业大学航空发动机高性能制造工业和信息化部重点实验室,西安 710072;西北工业大学陕西省"四主体一联合"航空发动机智能装配技术校企联合研究中心,西安 710072
- 2. 中国航发南方工业有限公司,湖南株洲 412002
- 3. 中国陆装驻株洲地区航空军事代表室,湖南株洲 412002
- 折叠
摘要
为了有效提高短精密螺栓连接结构的装配精度,分析了两级盘组合后形心、质心偏心影响因素,阐述了两级盘配合过程中的平动转动行为和定心原理,建立了两级转子形心偏差预测模型、初始不平衡量预测模型.提出了以短精密螺栓连接的转子盘安装相位为变量,形心偏心和初始不平衡量最小为优化为目标的工艺优化模型,通过实物实验进行了验证.结果表明:形心偏差模长最大相对误差为13.28％,组合不平衡量的计算结果精度最大提高了 37.3％,工艺优化结果与实验结果相符,对于短精密螺栓连接结构装配工艺优化具有重要的参考意义.
Abstract
In order to effectively improve the assembly accuracy of the short precision bolted connection structures,the influencing factors of the centroid and centroid eccentricity after combination of the two-stage disks were analyzed,the translational rotation behavior and centering principle during the matching process of the two-stage disks were expounded,and a two-stage rotor was established.Centroid deviation prediction model and initial imbalance prediction model were established.A process optimization model was proposed,the installation phase of the rotor disk connected by short precision bolts was taken as the variable,and the centroid eccentricity and the mini-mum initial unbalance amount were taken as the optimization objective,which were verified by the physical test.The results showed that the maximum relative error of the module length of the centroid deviation was 13.28％,the maximum accuracy of the calculation result of the combined unbalance increased by 37.3％,and the process optimization results were consistent with the test results,which had important reference significance for the optimization of the assembly process of short precision bolted connection structures.
关键词
短精密螺栓/同心度/不平衡量/安装相位/工艺优化Key words
short precision bolt/concentricity/unbalance/installation phase/process optimization引用本文复制引用
基金项目
国家科技重大专项(2017-Ⅶ-0010-0104)
基础科研项目(XXXX2018213A001)
出版年
2024
NETL
NSTL
万方数据