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Core pulling rivet and riveting method using same

A technology of blind rivets and rivet bodies, which is applied to rivets and other directions, can solve the problems of low connection strength and difficult operation, and achieve the effects of good mechanical properties, broad prospects and no excess.

Inactive Publication Date: 2017-06-13
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a blind rivet and a riveting method using the rivet, so as to solve the problems of difficult operation, low connection strength and excess control in existing riveting methods under complex working conditions

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  • Core pulling rivet and riveting method using same
  • Core pulling rivet and riveting method using same

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Embodiment Construction

[0014] Hereinafter, the blind rivet provided by the present invention and the riveting method using the rivet will be further described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings all adopt a very simplified form and all use imprecise ratios, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0015] The core idea of ​​the present invention is to solve the problems of high-strength riveting and superfluous material control in a single-sided operation that cannot be pre-drilled in aerospace and other complicated spaces. The present invention combines drilling technology, friction stir thermal connection technology and core riveting. Locking technology, that is, designing the head of the rivet body as a drill blade, and enclosing the core rod inside the rivet body, using rotational friction to generate heat to soften the base material a...

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Abstract

The invention provides a core pulling rivet composed of a rivet body and a rivet core shaft. A sharp blade is machined on the head portion of the rivet body and is used for piercing into parental metal; the tail portion is provided with a boss; the portion, close to the sharp blade face, of the boss is provided with a parental metal groove which is used for containing the parental metal overflowing during hole drilling; a driving groove is formed away from the sharp blade face and is used for transmitting torque; the head portion of the rivet core shaft is provided with a shaft shoulder which is in transition fit with the inner wall of the rivet body; a stress groove is formed in the middle portion and can make the rivet core shaft broken under the effect of stress; and a clamping characteristic part for clamping and a guiding characteristic part for clamping are arranged on the tail portion. The core pulling rivet and the riveting method using the same solve the problem that in an aerospace area and other complex space areas, the high-strength riveting of single-face operation for pre-hole-drilling cannot be achieved, and have the beneficial effects of being efficient in automation, good in mechanical performance and free of redundancy.

Description

Technical field [0001] The invention relates to the field of riveting, in particular to a blind rivet and a riveting method using the rivet. Background technique [0002] In the final assembly of large-scale aerospace products, we often encounter structural connection working conditions in narrow, closed or semi-closed, and complex structural areas. Such working conditions are often very difficult for back support and back operation. The connection technology of double-sided operation is like drilling. Hole, bolt connection, pressure riveting, impact riveting, and friction stir welding bring huge challenges, which are basically time-consuming, laborious and difficult to work. Therefore, blind riveting is often used in this working condition. [0003] Traditional pull-out mandrel rivets are installed by pulling force applied to the core rod from inside to outside. Force is applied to the rivet head, and the core rod containing the prefabricated notch is stretched to expand the di...

Claims

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Application Information

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IPC IPC(8): F16B19/10B21J15/04
CPCB21J15/048F16B19/10
Inventor 李鹏赵维刚范振昌董丰波乔凤斌董欣
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY