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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。
A new type of flexible portable multi-axis numerical control hole equipment - annular track hole making system is introduced to solve the problem of automatic hole making in the annular area of the butt joint section of the fuselage. The main structure and function of this equipment are described. The finite element model of the complete machine is established by ABAQUS software. The pre-tightening force is provided by the finite element simulation to ensure the stable positioning and installation of the whole system. The key bearing and guide components - ring track deformation under static load were simulated. According to the finite element analysis and calculation results, a positioning and installation scheme is proposed to improve the force of the structure, reduce the deformation of the annular track and improve the precision of the hole. Subsequently, the modal analysis of the finite element model is carried out and the dynamic characteristics Finally, the engineering prototype was used to make the hole making test to verify the actual machining effect of the annular orbital hole making system.