Abstract:
The invention relates to a method for assembling parts (P1 and P2) in composite hardware by means of a riveting member (R), and is notable in that it comprises: using a bushing (200), the hollow core (230) of which has two different sections (231 and 232); using an insert (100) having no functional axial bearing surface for the radial swelling of the bushing (200) in the through-hole (T), but the diameter (D3) of which is capable of enabling the housing thereof, with no change in shape, in the first section (231) of the hollow core (230), and is also capable of enabling the forcible housing thereof in the second section (232); axially feeding the insert (100) into the bushing (200) such that the latter radially swells inside the through-hole (T) up to the small section (232) thereof and such that the recess well-defined by said small section is occupied by said insert (100); and ensuring, by means of a rivet set (400), the pressure on the first section (231) of the bushing (200) by the end that changes shape to ensure the bending thereof by radial centrifugal extension.
Abstract:
The invention relates to a blind rivet (R) characterised in that it comprises a severing groove (130) shaped in such a way that the connection between the bottom of the groove and the outside diameter of the mandrel (100) increases more on the shank side than on the head side; a shank (120) provided with a plurality of preformed crimping grooves (140) and shaped in such a way that once the shank has been severed at the severing groove (130), part of the crimping grooves (140) extends beyond the sleeve (200); at least one weakening groove (150) on the shank; a crimping collar insert (400) is crimped into the crimping grooves (140) extending beyond the sleeve (200) using a tool (500) provided with a setting tip which can exert a pulling force on the mandrel (100) in order to bend the sleeve (200) and crimp the collar (400) on the mandrel (100). The invention is useful for attachment and riveting.
Abstract:
The invention relates to a method for structural attachment using a blind rivet (R) including a rod (100) that, equipped with a head (110) and a threaded portion (120), is arranged inside a hollow dowel (200) including a first end equipped with a head (210) and a second end (220) on which a nut (330) cooperating with the threaded portion of the rod (100) exerts a force transmitted by the rod (100) so that a second bearing surface on the second element is created by deformation, which is remarkable in that it consists of imparting a first translation movement (arrow F1) on the rod (100) so as to create, by deformation under the action of said nut, said second bearing surface, then imparting a second rotation movement (arrow F4) on said rod (100) for the purpose of screwing, so as to apply a tension in the attachment created. The invention also relates to the rivet enabling such a method to be implemented, as well as the fitting tool adapted to said rivet.