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Supersonic vibration assisted riveting method and application method thereof

A technology of ultrasonic vibration and application method, applied in aerospace engineering manufacturing, ultrasonic vibration-assisted riveting method and application method, can solve the problems of loss of rivet bearing capacity, grain elongation, shear failure, etc., to improve the plastic deformation range, The effect of stable riveting quality and reducing deformation resistance

Inactive Publication Date: 2018-04-06
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rivet head undergoes plastic deformation in the form of adiabatic shearing, and the strain in the shear zone is highly concentrated, and the grains are violently elongated and fragmented, which is prone to local instability, microcracks and shear failure, reducing or even losing the bearing capacity of the rivet.

Method used

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  • Supersonic vibration assisted riveting method and application method thereof
  • Supersonic vibration assisted riveting method and application method thereof
  • Supersonic vibration assisted riveting method and application method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A riveting method assisted by ultrasonic vibration, comprising the following steps:

[0043]Step 1, respectively setting concentric through holes on at least two layers of material plates;

[0044] Step 2, passing the rivet through the concentric through hole described in step 1; the rivet includes a nail head and a nail shank;

[0045] Step 3: Press the head of the rivet against the head of the rivet, and use ultrasonic vibration to compress the end of the shank of the rivet along the axial direction of the rivet, so that the end of the rivet forms an upset head, that is, realize the The riveting of the rivet to the material plate.

[0046] In the third step, the ultrasonic vibration is formed by an ultrasonic vibration assisted forming system, and the ultrasonic vibration assisted forming system includes an ultrasonic generator, an ultrasonic transducer and a horn connected in sequence. The present invention adjusts the parameters of ultrasonic vibration, such as vi...

Embodiment 2

[0054] An ultrasonic vibration-assisted riveting method as described in Embodiment 1, the difference is that the horn is in contact with the end of the nail rod through a riveting die.

[0055] Utilize top iron to withstand described nail head. as attached Figure 5 As shown, the top iron is placed on one side of the nail head and in contact with each other, the riveting mold is in contact with the end of the rivet rod, and the top iron, the riveting mold, and the ultrasonic vibration system are on the same straight line.

Embodiment 3

[0057] An ultrasonic vibration-assisted riveting method as described in Embodiment 1, the difference lies in that the diameters of the concentric through-holes arranged on different layers of material plates are the same.

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Abstract

The invention relates to a supersonic vibration assisted riveting method. The supersonic vibration assisted riveting method includes the steps that (1) concentric through holes are formed in at leasttwo layers of material plates; (2) rivets penetrate the concentric through holes in the step (1); and (3) rivet heads of the rivets are pressed, supersonic vibration is used for conducting compactiontreatment on the end of rivet rods of the rivets in the axial direction of the rivets, upset heads are formed at the ends of the rivet rods, and riveting of the rivets on the material plates is achieved. By means of the supersonic vibration assisted riveting method, the rivet deformation resistance is reduced, the rivet plastic deformation scope is improved, meanwhile, friction among the rivets, dies and connected plates can be reduced through supersonic vibration, and the rivet surface quality is improved. According to the supersonic vibration assisted riveting method, the pressure-sizing upsetting rivet rods are adopted to form the upsetting heads, the riveting quality is stable, the surface quality is good, and damage to the rivets and the connected pieces due to hammering riveting canbe effectively prevented.

Description

technical field [0001] The invention relates to an ultrasonic vibration-assisted riveting method and an application method thereof, which belong to aviation and aerospace engineering manufacturing, that is, the intersecting field of metal plastic deformation technology and material connection technology. Background technique [0002] The integrated aircraft structure is difficult to manufacture using the existing sheet metal forming technology, and the sheet metal connection technology is still the key technology for the assembly and manufacture of large aircraft structures. Among them, riveting is to use the plastic deformation of rivets to connect plate parts, which can make the outer surface of the aircraft relatively smooth and reduce flight resistance. Therefore, it is widely used in the field of aerospace engineering manufacturing, especially in the connection of skins, structural frames and stringers . [0003] With the development of aerospace manufacturing technolo...

Claims

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Application Information

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IPC IPC(8): B21J15/02B21J15/16B21J15/14B21J15/38B29C65/60
CPCB21J15/02B21J15/142B21J15/16B21J15/38B29C65/60B29C66/721B29C66/746B29C66/7461B29C66/80
Inventor 林军管延锦解振东朱立华李娇刘涛
Owner SHANDONG UNIV