飞机装配中衬套挤压扩口工艺及质量控制技术的研究

在飞机的装配过程中,零件孔与衬套的安装多采用挤压扩口工艺,掌握该工艺的关键技术和影响因素,对保证零件衬套安装的可靠性具有重要意义。通过对飞机装配过程中衬套挤压扩口工艺的分析,分别从设计和制造角度诠释挤压扩口工艺的目的和达标状态,阐述挤压扩口的工作原理以及工艺加工方法的选取,从零件的疲劳强度到零件所有表面的强化处理,详细分析影响挤压扩口质量的关键因素,对解决衬套安装时的超差问题具有较强的借鉴意义,同时也论证了零件使用冷缩法安装衬套后,采用挤压扩口工艺可以增加衬套与零件之间的抗疲劳和抗应力腐蚀能力,使衬套和孔的整体配合达到最佳效果。

The technical research for bushing swage housing process and quality control in Airplane assembly

In aircraft assembly process,the extrusion flaring process is often used in installation of holes in parts and bushing.To grasp the key technologies and influencing factors of this process,it is of the vital significance to ensure the reliability of bushing installed.The bushing extrusion flaring during aircraft assembly process is analyzed,the process purpose and qualified condition from design and manufacture aspect respectively are defined.The operational principle of extrusion flaring and the selection of process method are described.The key factors of affecting on extrusion flaring quality,such as the parts fatigue strength and intensifying on all the surfaces,are analyzed in detail.The research result is of certain reference value for the problem of out of tolerance.Meanwhile,the fatigue strength and resistance to corrosion are enhanced by using the extrusion flaring process after the installation of bushing shrink fit to achieve the best installation result.