Patent ID: 8668420

Claim:
Method of assembling parts made from composite materials by means of a riveting member of the type comprising firstly an insert and secondly a sleeve adapted to at least partially contain the insert and having an end provided with a head and a tubular end able to be deformed with a view to constituting a bulb on one side of the materials to be assembled, a hole passing through the materials to be assembled being produced, the sleeve being introduced and held in the hole with its head in abutment on the rims of the end of the hole and so that its tubular end projects therefrom on the other side, said method being characterised in that it consists of: using a sleeve the hollow core of which has two different sections, a first section starting from the tubular end to be deformed having a first diameter and a second section starting at the end of the first section and with a lesser diameter, using a insert not having a functional axial bearing surface for purposes of radial swelling of the sleeve in a hole but the diameter of which is able to allow housing thereof without deformation in the first section of the hollow core and able to allow forcible housing thereof in the second section, axially introducing the insert in the sleeve so that the latter swells radially inside the hole at its small section and the recess defined by this small section is occupied by said insert, and providing, by means of a riveting die, a pressure at the end of the sleeve to be deformed on its first section in order to ensure folding thereof by centrifugal radial extension.