Embedding lining and method for processing out-of-tolerance holes through embedding lining

Abstract

The invention relates to the technical field of airplane structural design, in particular to an embedding lining and a method for processing out-of-tolerance holes through the embedding lining to process the out-of-tolerance holes with pneumatic appearance structural pieces. Through designing of the specific embedding lining, the out-of-tolerance holes, with the pneumatic appearance structural pieces, of all parts of an airplane are repaired, and the embedding lining and the method are particularly suitable for processing the engineering problem of the out-of-tolerance holes of fasteners of a wing, an airplane body wall plate and other parts with the high requirement for the pneumatic appearance. The embedding lining is simple in structure and convenient to manufacture, and is kept consistent with pneumatic appearance structural pieces in pneumatic appearance. According to the method for processing the out-of-tolerance holes, the requirement for increasing the size distance of the fasteners or the installing space on the out-of-tolerance holes with the pneumatic appearance structural pieces can be met.

Description

technical field [0001] The invention relates to the technical field of aircraft structure design, in particular to a countersunk bush and a method for using the countersunk bush to process out-of-tolerance holes. Background technique [0002] In the process of aircraft manufacturing and maintenance in the prior art, some out-of-tolerance holes will inevitably be produced. At this time, it is preferred to use an enlarged one-level fastener to deal with the out-of-tolerance area. When the size of the increased fastener cannot meet the limit When the distance or installation space is required, it is also an effective method to press into the bush after reaming the out-of-tolerance hole. Among them, the most common bushings are stepped and cylindrical bushings. [0003] When the out-of-tolerance hole is located in the structural connection area with aerodynamic shape requirements, such as the connection area between the spar, the wing rib and the wing wall, at this time, the st...

AI Technical Summary

Problems solved by technology

[0003] When the out-of-tolerance hole is located in the structural connection area with aerodynamic shape requirements, such as the connection area between the spar, the wing rib and the wing wall, at this time, the structure with aerodynamic shape, such as the fastener hole or the countersink on the wing wall, exceeds the Poor, if the traditional stepped bush is used, it is difficult to meet the requirements of the aerodynamic shape; if the cylindrical bush is used, when the bush is re-sinked after installation, part of the bush will be spot-faced, and the countersunk end of the fastener cannot meet the bushing installation The minimum wall thickness requirement is easy to cause stress concentration and strength reduction

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