Short tail pulling rivet and detaching method thereof

Abstract

The invention discloses a short tail pulling rivet. The short tail pulling rivet comprises a rivet and a sleeve ring, wherein the rivet is matched with the sleeve ring. The rivet comprises nail heads, a polished rod, a ring-shaped locking part and a short tail, wherein the nail heads, the plished rod, the ring-shaped locking part and the short tail are connected sequentially. The short tail comprises a locking part and an expansion clamping part, wherein the locking part is connected with the ring-shaped locking part, the locking part is connected with the expansion clamping part and the ring-shaped locking part through an arc-shaped transition structure. During working, the locking part of the short tail and a axial positioning locking end face of a clamping claw in a installing tool are locked together, and the expansion clamping part of the short tail is matched with an inner concaved type spherical profiling part of the clamping claw; under axial limiting effects of the locking part of the short tail and the locking end face of the clamping claw, the clamping claw is engaged with the short tail completely, the installing tool and the sleeve ring are automatically positioned and aligned, and meanwhile stress concentrating effect of the rivet during the installing process is reduced, so that the short tail pulling rivet is effectively protected against damaging, and installing efficiency is improved at the same time. The invention further discloses a detaching method for the short tail pulling rivet.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a short-tail blind rivet and a method for disassembling and assembling the short-tail blind rivet. Background technique [0002] Short-tail blind rivets are mainly used in the field of fastening and connection of high-strength components with holes (between steel, aluminum alloy, and stainless steel). The existing short-tail blind rivets mainly have multiple slots and single There are two structures of slotting. [0003] Please refer to the attached picture, figure 1 and figure 2 It is a schematic diagram of the structure of the multi-slotted short-tail rivet, and the tooth shape of the locking section of the multi-slotted short-tailed rivet is based on figure 2 r in 1 , r 2 , r 3 and r 4 It is a mixed curve type composed of corresponding circular arcs, but the tooth shape is difficult to process and manufacture, the manufacturing accuracy is not easy to co...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a short-tail blind rivet, which can effectively solve the problem of stress concentratio...

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