Tooling for holding thin metal parts making up a hollow structure in order to enable them to be friction-welded together

Holder tooling for holding parts in order to enable them to be friction-welded together to construct a generally plane hollow structure, the hollow structure being made up of a set of preformed parts brought successively into abutment against at least one internal stiffener section that is provided at the ends of its section with flanges for receiving in overlap edges of the preformed parts, the tooling including at least one anvil suitable for receiving the adjacent edges of the parts for welding together pressed thereagainst, and reversible clamping means suitable for causing the edges to be subjected to an opposing thrust between the anvil and shape-holder members of the hollow structure, wherein the tooling comprises:

• a framework for receiving the parts for welding together in their positions for forming the hollow structure, the framework being subdivided into two frames provided with reversible junction means for joining them together in an assembled position on either side of the hollow structure that is to be obtained, on either side of the general plane in which it extends;
• the shape-holder members for holding the preformed parts installed inside the framework, which members are carried by the framework;
• at least one anvil suitable for being placed inside the set of preformed parts installed inside the framework, being placed laterally relative to the section, between its flanges;
• and
• the clamping means suitable for being placed inside the set of preformed parts installed inside the framework, which clamping means are movable into a clamping position in which they cause opposing thrust to be applied between the anvil and the inside face of at least one preformed part associated with the clamping means.