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Interference riveting method and device based on ultrasonic assistance

An ultrasonic-assisted riveting technology, which is applied in the field of ultrasonic-assisted interference riveting and riveting of aluminum alloy parts, can solve the problems that the quality of riveting cannot meet the requirements and the fluidity of materials cannot be improved, and achieve strong operability and overcome Insufficient anti-fatigue performance, stable and durable structure

Active Publication Date: 2012-10-31
SHANGHAI AIRCRAFT MFG +1
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the current riveting process cannot meet the requirements of the riveting quality due to the unimproved material fluidity, and to provide a brand-new ultrasonic-assisted interference based on the ultrasonic principle to improve the flow performance of aluminum alloy materials and improve the riveting quality. riveting method, while designing a related riveting device

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  • Interference riveting method and device based on ultrasonic assistance
  • Interference riveting method and device based on ultrasonic assistance
  • Interference riveting method and device based on ultrasonic assistance

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Such as Figure 1-4 As shown, the ultrasonic-assisted interference riveting device mainly includes: upper riveting die 1, rivet 2, upper connecting plate 3, lower connecting plate 4, lower riveting die 5 and ultrasonic generator 6, upper connecting plate 3 and lower connecting plate 4 Stacked and placed between the upper riveting die 1 and the lower riveting die 5, the rivet 2 is placed in the riveting hole of the upper connecting plate 3 and the lower connecting plate 4, the upper riveting die 1 is in contact with the end surface of the rivet 2, and the lower riveting die 5 is in contact with the nail head of the rivet 2 , the lower riveting die 5 is in contact with the ultrasonic generator 6 , and the ultrasonic wave from the ultrasonic generating device 6 is transmitted to the rivet 2 through the lower riveting die 5 . In this embodiment, the...

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Abstract

The invention provides an interference riveting method based on ultrasonic assistance, which comprises the stages of integral upsetting, riveting and forming, maintaining the pressure and unloading, an ultrasonic generation device is installed on the lower part of a lower riveting mould or the upper part of an upper riveting mould to provide continuous ultrasonic excitation during the integral upsetting, riveting and forming and pressure maintaining processes so as to change the flowing friction resistance of a rivet material and internal flow stress in the rivet material during the process of deforming the rivet through a rivet hole wall to guarantee the rivet material to uniformly flow along the axial direction to uniformly upset the rivet. The invention further provides an interference riveting device based on ultrasonic assistance, which comprises an upper riveting mould (1), a rivet (2), an upper connecting plate (3), a lower connecting plate (4), a lower riveting mould (5) and an ultrasonic generation device (6). The riveting method and device provided by the invention is easy in realization, good in riveting quality, high in efficiency and is capable of meeting different working condition demands by changing the execution mode of ultrasonic.

Description

technical field [0001] The invention relates to a mechanical connection method, in particular to a riveting method of aluminum alloy parts, in particular to an ultrasonic-assisted interference riveting method and device which utilizes ultrasonic excitation to change material flow properties during deformation of aluminum alloys. Background technique [0002] As we all know, riveting has the irreplaceable advantages of other connection methods such as high reliability and simple process realization. Therefore, riveting technology is mostly used in the assembly and connection of aerospace vehicles. [0003] At present, the common methods of riveting include pressure riveting, hammer riveting, electromagnetic riveting and so on. Pressure riveting is a commonly used riveting process, which has the advantages of good controllability and high efficiency, but pressure riveting cannot satisfy uniform interference deformation; the quality of the connection structure obtained by hamme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J15/38B21J15/02B21J15/10
CPCB21J15/02B21J15/12
Inventor 姜丽萍陈文亮王宇波韦红余凡志磊朱春燕杨悦梁康
Owner SHANGHAI AIRCRAFT MFG
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