Analyzing Factors that Influence the Installation Quality of Interference-fit Hi-lock Bolt Connection
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摘要: 在航空制造领域,干涉配合连接是结构连接的一种常用的方法,采用干涉配合连接能成倍地提高接头疲劳强度。应力波安装是一种新的干涉配合紧固件安装方法,能比较容易地实现大干涉量紧固件的安装。本文中结合某型号飞机制造中干涉配合高锁螺栓的安装,并通过实验对影响高锁螺栓安装质量的因素进行了研究分析。研究发现选用过渡圆角较大、表面润滑质量较好的高锁螺栓并采用双枪两边同时加载的安装方式可获得较好的安装质量;夹层材料与紧固件强度相差较大时不适合采用较大干涉量的干涉配合。Abstract: In the field of aircraft manufacturing, interference-fit connection is a common structural connection method which can enhance the fatigue strength of interference-fit fasteners. Stress wave installation is a new method for installing easily the interference-fit fasteners that have large interference volumes. We use experiments to analyze the factors that influence the quality for installing the interference-fit hi-lock bolts of a certain model of aircraft during its manufacturing. The results show that the use of hi-lock bolts with large fillets and high-quality surface lubrication and the use of twin guns for loading can enhance its installation quality and that the high interference-fit installation method is not suitable for fasteners and sandwich materials with large difference in strength.
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