摘要
介绍了一种新型柔性便携式多轴数控制孔设备——环形轨道制孔系统,用于解决机身对接段环形区域自动化制孔问题。对该设备的主要结构及功能做了说明;利用ABAQUS软件建立了整机的有限元模型,通过有限元仿真计算得到了保证整个系统稳定定位安装所需支撑脚提供的预紧力;对设备的关键承载及导向部件——环形轨道在静载时的变形进行了仿真分析。根据有限元分析计算结果,提出了一种改善结构受力、减小环形轨道变形、提高制孔精度的定位安装方案;随后,对有限元模型进行了模态分析,考察了整机的动态特性;最后,应用工程样机进行了制孔试验,验证了环形轨道制孔系统的实际加工效果。
In order to solve the problem of automated drilling on the circumferential region in splice section of the fuselage,a lightweight,flexible,portable,multiple spindle,automated NC machine is introduced,the circumferential track drilling system.The equipment＇s primary structure and functions are described in this paper.First,the finite element model of the circumferential flex track drilling system is established by ABAQUS software.Then the pretightening force of the support foot that guarantees the location and installation is calculated by simulation.The key load bearing of the equipment and the deformation of the circumferential track with static load are analyzed by simulation.According to the result of the finite element analysis,a position installation scheme is put forward to improve structure＇ force situation,decrease deformation of the circumferential track and increase drilling accuracy.Then a dynamic analysis is performed to demonstrate the equipment＇s dynamic characteristics.After a test of drilling with the prototype of the equipment,its drilling effects are verified.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2014年第8期2319-2330,共12页
Acta Aeronautica et Astronautica Sinica
基金
国家自然科学基金(51305395)
中央高校基本科研业务费专项资金(2014FZA4003)~~
关键词
机构设计
自动制孔
有限元方法
环形轨道
定位方案
模态分析
mechanisms
automated drilling
finite element method
circumferential track
locating scheme
modal analysis
