Rivet, riveting structure capable of realizing synchronous and uniform interfering along axial direction and riveting process

Abstract

The invention relates to arivet, a riveting structure capable of realizing synchronous and uniform interfering along an axial direction and a riveting process. The rivet comprises a rivet body and a rivet core; the rivet body is provided with a conical through hole penetrating through the rivet body and the head of the rivet body in the axis direction of the rivet body; the rivet core is arranged in the conical through hole in a penetrating mode; at least part of the rivet core is in close contact with the conical through hole; the contact portion of the rivet core and the conical through hole is conical; the taper of the contact portion is the same as that of the conical through hole; the rivet body and the rivet core can be sealed in the process of pulling the rivet core, and synchronous and equivalent interference fit is generated among the rivet core, the rivet body and the hole wall of a fastening hole in the axial direction of the hole after riveting, and plastic flowing of materials of the to-be-connected assembly caused by pulling of the rivet core is avoided, and therefore the purpose of improving a fatigue strengthening effect is achieved.

Description

technical field

[0001] The present disclosure relates to the technical field of mechanical connection, and in particular, to a rivet, a riveting structure with synchronous and uniform interference along the axial direction, and a riveting process. Background technique

[0002] The fastening hole is a typical structure that is prone to local stress concentration. Fatigue cracks are easy to occur under the action of alternating loads, which affects the fatigue life of the fastening hole, and then affects the safety, reliability and service life of the structural parts.

[0003] The principle of interference fatigue strengthening is to form a certain supporting force between the fastener and the fastening hole of the matrix, so that the local fatigue stress amplitude around the hole is reduced, and the purpose of fatigue strengthening is achieved. Riveting is a common type of fastening hole connection, and the connection between components is realized by installing fasteners su...

Examples

Embodiment Construction

[0037] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0038] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, for example, according to the description in the accompanyin...

technical field

[0001] The present disclosure relates to the technical field of mechanical connection, and in particular, to a rivet, a riveting structure with synchronous and uniform interference along the axial direction, and a riveting process. Background technique

[0002] The fastening hole is a typical structure that is prone to local stress concentration. Fatigue cracks are easy to occur under the action of alternating loads, which affects the fatigue life of the fastening hole, and then affects the safety, reliability and service life of the structural parts.

[0003] The principle of interference fatigue strengthening is to form a certain supporting force between the fastener and the fastening hole of the matrix, so that the local fatigue stress amplitude around the hole is reduced, and the purpose of fatigue strengthening is achieved. Riveting is a common type of fastening hole connection, and the connection between components is realized by installing fasteners su...

Examples

Embodiment Construction

[0037] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0038] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, for example, according to the description in the accompanyin...

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