Aircraft aluminum alloy skin edge allowance milling tool

Abstract

An aircraft aluminum alloy skin edge allowance milling tool belongs to the technical field of aircraft assembling. The tool comprises an air inlet nozzle, a starting switch, a turbine motor, a 90-degree angular head, a fastening nut, a limiting tail end main body, a jackscrew, a screw, a spring limiting piece, a cutter, a limiting block, an inner side rolling bearing, a half-thread headless nail,an inner side bearing blocking cover, a limiting block fastening knob, a distance adjusting telescopic device, an outer side bearing blocking cover, an outer side rolling bearing and a bearing. By using the tool, the control requirement of an aluminum alloy skin gap can be guaranteed with high precision, the control range of the skin gap is increased through graded adjustment of limiting sliding blocks, misoperation in the working process is avoided by placing spring pieces, the rolling contact mode is adopted for a fitting surface of the tool and skin, the friction force is reduced, and the operation stability is guaranteed. The gap precision value can reach 0.1 mm, and the precision milling efficiency of the edge of the skin with the length of 600 mm is improved by 60 times.

Description

technical field [0001] The invention is aimed at the precise control requirement of aluminum alloy skin edge allowance in the aircraft assembly process, and is used to ensure the skin clearance requirement after assembly and connection, and milling and finishing the aluminum alloy skin allowance; it belongs to the technical field of aircraft assembly . [0002] technical background [0003] During the aircraft assembly process, there will be a margin before the components and parts are combined, and the manufacturing and assembly errors will be eliminated by means of actual milling and finishing. At present, the main method of milling the aluminum alloy skin is manual marking. Relying on the experience and technical proficiency of the workers to repeatedly remove the allowance with the hand-held pneumatic milling wheel and grinding wheel, this method is currently difficult to meet the 0.3mm outer surface skin clearance requirement of the new generation of aircraft, and there ...

AI Technical Summary

Problems solved by technology

[0003] During the aircraft assembly process, there will be a margin before the components and parts are combined, and the manufacturing and assembly errors will be eliminated by means of actual milling and finishing. At present, the main method of milling the aluminum alloy skin is manual marking. Relying on the experience and technical proficiency of the workers to repeatedly remove the allowance with the hand-held pneumatic milling wheel and grinding wheel, this method is currently difficult to meet the 0.3mm outer surface skin clearance requirement of the new generation of aircraft, and there is a large error in the fineness of the pencil line. The amount of milling and grinding is difficult to control, the uniformity of the skin gap is poor, and the labor intensity of the workers is high. Repeated comparison measurements and multiple milling and grinding are required. Usually, it takes about an hour to complete the precise milling of a 600mm long skin edge, and Quality is difficult to guarantee, therefore, it is very necessary to seek a precise, efficient, and low labor-intensive milling tool for edge allowance of aluminum alloy skin

Images