A non-destructive riveting device and non-destructive riveting method for CFRP components

Abstract

The invention discloses a non-destructive riveting device and a non-destructive riveting method for CFRP components. The non-destructive riveting device for CFRP components includes a top iron, a rivet, a CFRP component, a countersunk washer, a positioning sleeve, a riveting die, and a countersunk bushing. The top iron is provided with the rivet, the rivet passes through the CFRP component, the countersunk washer, and the positioning sleeve, the countersunk washer is located above the CFRP component, and the positioning sleeve is located on the Above the countersunk washer, the bush with countersunk head is arranged between the CFRP member and the rivet, and the riveting die is arranged above the positioning sleeve. The present invention provides a buffering restraint area for the deformation of the nail head by adopting the riveting method of the countersunk washer and the bushing with the countersunk head, so that a large amount of deformation force of the rivet acts in the groove of the countersunk washer, limiting the CFRP member The inner nail shank expands radially, and only a small amount of uniform deformation occurs, thereby avoiding riveting damage of CFRP components.

Description

technical field [0001] The invention relates to the technical field of aerospace manufacturing, in particular to a non-destructive riveting device and a non-destructive riveting method for CFRP components. Background technique [0002] Composite materials are widely used in the fields of aviation, aerospace, energy engineering, automobile manufacturing, wind power generation and shipbuilding due to their excellent material structural properties, high specific strength and specific modulus, and remarkable designability. Advanced composite materials represented by carbon fiber reinforced resin matrix composites (CFRP) have the advantages of high specific strength, high specific stiffness, tailorable design and structural integral molding, etc., which can reduce the weight of aircraft structures by 10% to 40%, and reduce structural design. The cost is 15% to 30%. Therefore, the amount of use on new aircraft has been greatly increased, and the scope of application has also been ...

AI Technical Summary

Problems solved by technology

However, the flat washer used in this invention cannot be fixed during the installation process, causing the washer to easily slip, dislocate or even fall during riveting installation, which is inconvenient for riveting, and the riveted joint increases the extra weight of the flat washer

The invention with application number 201911380498.8 discloses a riveted joint forming processing device, which solves the problem that existing riveting equipment often has deviations when riveting sheets and cannot be fixed well

However, the invention is too bulky, and it is inconvenient to disassemble the plates, so it is not suitable for poor openness and more complicated working conditions.

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