Patent ID: 8225508

Claim:
A process for assembling two assemblies by multiple fastening devices configured to create a junction between two panels which are at least partly superimposed and which belong respectively to the two assemblies and which together form an overlap zone, the process comprising: drilling of multiple holes through the overlap zone, wherein each of the holes is configured to house one of a plurality of fastening components, the drilling of each hole is achieved using a drilling tool which passes through an associated centering hole made in a drilling grid securely fixed onto the overlap zone, the drilling tool includes a mandrel for support on the overlap zone and an expanding ring fitting over a conical contact surface of said mandrel, said expanding ring being configured to expand upon a relative movement between the mandrel and the expanding ring and further configured to immobilize in the associated centering hole; wherein application of the relative movement between the expanding ring and the mandrel is achieved so that, following immobilization of the expanding ring in the associated centering hole, the mandrel is displaced through the associated centering hole and along a central axis of the conical contact surface in the direction of said overlap zone, to exert a pressure on the overlap zone.