A riveting method and device for novel hybrid composite materials for aviation

A composite material, riveting device technology, applied in applications, household appliances, household components, etc., can solve the problems of lack of interference consideration, inability to control the fatigue life of laminate riveting parts, etc., to reduce the occurrence of riveting defects, high engineering Application value, effect of riveting quality improvement

Active Publication Date: 2019-08-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] CN 104096792 A, CN 1712744 A, CN 103733385 A and CN 103600016 A all only proposed metal riveting devices and methods, all of which lack the consideration of the amount of interference, so that the fatigue life of laminate riveted parts cannot be controlled

Method used

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  • A riveting method and device for novel hybrid composite materials for aviation
  • A riveting method and device for novel hybrid composite materials for aviation
  • A riveting method and device for novel hybrid composite materials for aviation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] ①Using CNC milling method to process the 3 / 2 structure glass fiber reinforced aluminum alloy laminate to the target size, implement drilling, and use acetone to ultrasonically clean the impurities in the hole.

[0049] ②Remove the burrs and debris between the fitting surfaces, and clean the fitting surfaces with acetone.

[0050] ③The diameter of the rivet is 4.1mm, the material of the rivet is aluminum alloy, the workpiece is plate, the total thickness of the interlayer is 2.8mm, and the top handle with a weight of 4kg is selected according to the working space of the riveting place and the shape of the workpiece image 3 Top handles, ultrasonic cleaning top handles, metal gaskets and composite material process gaskets.

[0051] ④ The active parts of the riveting device should be lubricated so that there is no tightness. Press the riveted parts tightly, place the nails in the holes according to the riveting requirements, perform riveting on the special riveting device...

Embodiment 2

[0058] ①Using CNC milling method to process the 3 / 2 structure glass fiber reinforced aluminum alloy laminate to the target size, implement drilling, and use acetone to ultrasonically clean the impurities in the hole.

[0059] ②Remove the burrs and debris between the fitting surfaces, and clean the fitting surfaces with acetone.

[0060] ③The rivet diameter is 6.1mm, the rivet material is titanium alloy, the workpiece is a concave curvature part, the total thickness of the interlayer is 2.8mm, and the top handle with a weight of 5kg is selected according to the shape of the riveted part. Figure 4 The convex curvature top handle can realize the riveting of convex curvature laminates. Ultrasonic cleaning of top handles, metal washers and composite process washers.

[0061] ④ The active parts of the riveting device should be lubricated so that there is no tightness. Press the riveted parts tightly, place the nails in the holes according to the riveting requirements, and perform...

Embodiment 3

[0064] ①Using CNC milling method to process the 4 / 3 carbon fiber reinforced titanium alloy laminate to the target size, implement drilling, and use acetone to ultrasonically clean the impurities in the hole.

[0065] ②Remove the burrs and debris between the fitting surfaces, and clean the fitting surfaces with acetone.

[0066] ③The diameter of the rivet is 6.1mm, the material of the rivet is Monel alloy, the workpiece is a concave curvature part, the total thickness of the interlayer is 3.9mm, and the top handle with a weight of 8kg is selected according to the shape of the riveted part Figure 4 The convex curvature top handle can realize the riveting of convex curvature laminates. Ultrasonic cleaning of top handles, metal washers and composite process washers.

[0067] ④ The active parts of the riveting device should be lubricated so that there is no tightness. Press the riveted parts tightly, place the nails in the holes according to the riveting requirements, and perfor...

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Abstract

The invention discloses a riveting method and device for a novel hybrid composite material for aviation. The device comprises a top handle, a riveter, a riveter punch, an upper composite material gasket, a lower composite material gasket and a metal gasket; a sunken portion for accommodating the head of a rivet is formed in the top of the top handle; the head of the rivet is placed in the sunken portion of the top handle; the rod portion of the rivet penetrates through a rivet hole of the hybrid composite material, the lower composite material gasket is arranged between the top handle and thebottom of the hybrid composite material, a cavity is formed in the middle of the lower composite material gasket, the head of the rivet can pass through the cavity, and under protection of the top handle and the lower composite material gasket, the head of the rivet does not deform in a riveting and hammering process. According to the method and device disclosed by the invention, the riveting process problem of a fiber-metal super-hybrid layer plate can be effectively solved, and the service stability of the layer plate riveting structure is prolonged remarkably and the fatigue life is remarkably prolonged.

Description

technical field [0001] The invention belongs to the technical field of assembly and connection of composite materials, in particular to a riveting method and device for novel fiber-metal super-hybrid laminates. Background technique [0002] my country's large aircraft project is in a period of rapid development, and more and more emphasis on lightweight. The characteristics of long service life and high frequency of use of large aircraft are likely to cause fatigue cracks and impact damage to the skin of the airframe. In this context, a new type of hybrid composite material—fiber-metal hyperhybrid laminate came into being. The new type of fiber-metal hyperhybrid laminate is alternately laminated by metal and fiber-reinforced composite materials, and cured under a certain temperature and pressure. become. The laminate complies with lightweight production requirements while providing performance superior to conventional materials. Because the metal on the outer layer of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C65/60B64F5/10B29L31/30
Inventor 陶杰田精明刘成李华冠林炎炎陆一陈虞杰华小歌
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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