Method for connecting two thin plates by using countersunk riveting bushing

Abstract

The invention discloses a method for connecting two thin plates by using a countersunk riveting bushing, and aims at providing a method which is simple in structure and high in reliability, is capable of decreasing the opening number of thin plates and is suitable for the connection of different thin plate materials. The method is realized through the technical scheme as follows: the lower end of the countersunk riveting bushing for connecting an upper thin plate with a lower thin plate is cylindrical and the upper end thereof is inverted truncated cone-shaped; the wall thicknesses of the upper end and lower end are the same; a connection hole for fixing the thin plates is combined with an external mounting hole; the contact surfaces of the upper and lower thin plates are coated with glue to be adhered and fixed; a through hole and a double-sided countersink are formed in a thick plate; a countersink in the upper surface of the upper thin plate is matched with the truncated cone-shaped appearance of the upper end of the bushing; a 90-degree countersink is formed in the lower surface of the lower thin plate; the upper end of the countersunk riveting bushing is mounted in the countersink of the upper thin plate; at the lower end of the bushing, a riveting tool is used for expanding the 90-degree countersink of the lower thin plate; a countersunk rivet penetrates through a through hole in the countersunk riveting bushing so as to fix a riveted assembling component onto a mounting platform; the upper thin plate and the lower thin plate are connected to form the assembling component.

Description

technical field [0001] The invention relates to a method for connecting two thin plates with a countersunk head riveted bushing, especially suitable for connecting thin plates of different materials Background technique [0002] Composite materials have been widely used in aircraft. For example, a certain type of radome is composed of two thin plates, one part is the wave-transparent substrate of the radome, and the wave-transparent substrate is made of composite fiber through a mold; the other part is the radome Mounting base plate, shaped by metal milling. The two parts are joined together to form an assembly. Since the composite material has a layered structure along the thickness direction, it has weak points such as low interlayer shear strength, poor impact resistance, and low pull-off strength. The key to connection. [0003] The traditional thin plate connection schemes mainly include: bonding, screwing, welding and riveting. Bonding is to apply glue on the conta...

AI Technical Summary

Problems solved by technology

Therefore, internal stress will inevitably be generated in the rivet, which is definitely detrimental to the strength of the connection; moreover, it is not suitable to use rivets with high material hardness for the connection of composite material thin plates. Composite interlaminar cracking

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