Rivetless riveting device and riveting method for dissimilar materials based on hot melting principle

A technology of rivetless riveting and dissimilar materials, which is applied in the field of rivetless riveting devices between dissimilar materials, and can solve the problems of brittle failure and complicated process

Active Publication Date: 2017-05-17
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention designs and develops a rivetless riveting device between dissimilar materials based on the principle of thermal fusion. The purpose of the present invention is to solve the problem of a riveted joint that requires pre-punching of aluminum alloy plates, which requires complex procedures and is prone to brittle failure during the riveting process.

Method used

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  • Rivetless riveting device and riveting method for dissimilar materials based on hot melting principle
  • Rivetless riveting device and riveting method for dissimilar materials based on hot melting principle
  • Rivetless riveting device and riveting method for dissimilar materials based on hot melting principle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Mold used for making carbon fiber composite panels with through holes

[0072] Such as figure 1 As shown, the carbon fiber composite material molding process includes prepreg mold loading, prepreg gel, mold clamping and pressure, heating and curing, cooling and demoulding, trimming the test piece and checking for backup. The preparation mold is composed of an upper punch 110 and a lower die 120. The mold has a simple structure and is convenient for preparing a carbon fiber composite material plate with through holes.

[0073] Such as figure 2 , image 3 As shown, the upper punch 110 is a cuboid structural member, a cuboid boss with relatively small length and width is set at the center with the lower surface of the cuboid as the reference plane, and a cylinder is arranged at the center of the boss Combination of volume and cone light holes, with the bottom surface of the cuboid boss as the reference plane, the light holes close to the reference plane are cylindrical...

Embodiment 2

[0078] Method used to prepare carbon fiber composite panels with through holes

[0079] On the basis of the designed mold, the preparation of the carbon fiber composite plate is realized, and the designed mold can prepare the carbon fiber composite material plate with through holes.

[0080] Fabrication process of carbon fiber composite panels with through holes:

[0081]1. After the carbon fiber cloth prepreg process is completed, the carbon fiber composite material prepreg cloth is cut, and the prepreg cloth is placed into the groove in the lower die 120. During the laying process, the woven carbon fiber composite material prepreg cloth is The weaving pores of the lower die 120 pass through the beam of light, and ensure that the carbon fiber composite material prepreg is completely paved in the groove, and there is no gap between the bottom surface of the groove and the carbon fiber composite material prepreg;

[0082] 2. Assemble the upper punch 110 and the lower die 120 t...

Embodiment 3

[0086] Rivetless riveting method of aluminum alloy plate and carbon fiber composite material plate

[0087] Such as Figure 5 As shown, the rivetless riveting device in the riveting method of the aluminum alloy plate 150 and the carbon fiber composite plate 160 is composed of a hot-melt drill 130 , a blank holder 140 , a riveting needle 170 , and a lower die 180 .

[0088] The hot-melt drill bit 130 is a standard hot-melt drill bit, which consists of an annular boss, a middle cylinder and a top cone structure. A through hole for positioning the hot-melt drill bit 130 is provided at the structure center of the blank holder 140 , and the hot-melt drill bit 130 moves up and down in the through hole of the binder ring 140 during the riveting process.

[0089] The needle body part of the riveting needle 170 is composed of two cylinders with different bottom diameters. Arc surface transition is adopted between bodies. A through hole for positioning the riveting pin 170 is arrange...

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Abstract

The invention discloses a rivetless riveting device for dissimilar materials based on a hot melting principle. The rivetless riveting device comprises an edge pressing ring, a hot melting drill bit, a rivet overturning needle and a lower die, wherein the edge pressing ring is provided with a through hole and used for fixing an aluminum alloy plate and a carbon fiber composite plate; the hot melting drill bit is capable of doing up-down reciprocating motion in the through hole in the edge pressing ring; the rivet overturning needle and the hot melding drill bit are concentrically arranged; the lower die is provided with a through hole and used for positioning the rivet overturning needle; the rivet overturning needle does up-down reciprocating motion in the through hole in the lower die; and the auxiliary alloy plate and the carbon fiber composite material plate are concentrically arranged on the lower die, and the aluminum alloy plate, the carbon fiber composite plate, the hot melting drill bit and the rivet overturning needle are concentrically arranged. The hot melting drill bit and the rivet overturning needle act on the through hole position of the aluminum alloy plate and the carbon fiber composite plate in the moving process, and the rivetless riveting piece is formed. The invention further discloses a rivetless riveting method for the dissimilar materials based on the hot melt principle.

Description

technical field [0001] The invention relates to the field of riveting of carbon fiber composite material plates and aluminum alloy plates, in particular to a rivetless riveting device and method for dissimilar materials based on the principle of thermal fusion. Background technique [0002] Due to the increasingly serious environmental and energy problems, the lightweight technology of automobiles is developing rapidly. Carbon fiber composite material is a new type of composite material with good mechanical properties and has been widely used in aerospace. In recent years, carbon fiber composite materials have been more and more used in the automotive industry due to their higher specific stiffness and specific strength compared to traditional metal materials, as well as good impact resistance and energy absorption, good fatigue resistance, and electrochemical corrosion resistance. more and more widely. [0003] In body application materials, the proportion of non-metallic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/60B29C65/72B29C70/34
CPCB29C65/60B29C65/72B29C66/43B29C66/7422B29C70/345
Inventor 庄蔚敏武世杰吴迪敖文宏刘西洋解东旋施宏达杨冠男徐纪栓高瑞娟秦龙张凯希胡哲李冰娇
Owner JILIN UNIV
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