Device and method for the machining of an end of an elementary panel for its friction stir welding

1. A machining and welding system for machining and welding ends of elementary panels with each elementary panel comprising a respective metal body having a respective two faces including a first face and a second face, the machining and welding system comprising:

a first support having a surface supporting a first of the elementary panels;

a second support having a surface supporting a second of the elementary panels;

a displacement device having a functional unit that is displaceable relative to the first and second support devices; and

a machining device connectable to the functional unit and configured to remove a thickness from at least one of the two faces of the first elementary panel mounted on the first support device, the machining device comprising:

a chassis;

at least two guiding members mounted on the chassis, the at least two guiding members being aligned along a horizontal reference direction and configured to guide a first face (F 1 ) of the first elementary panel;

at least one machining tool mounted on the chassis and positioned between the at least two guiding members with respect to the horizontal reference direction and being displaceable, relative to the horizontal reference direction, in a vertical direction; and

at least one pressure member mounted on the chassis along the horizontal reference direction and configured to exert a pressure on a second face of the first elementary panel so as to press the first elementary panel against the at least two guiding members; and

a friction stir welding unit connectable to the functional unit to friction stir weld an end of the first elementary panel and an end of the second elementary panel together.

2. The machining and welding system according to claim 1 , wherein the at least one pressure member comprises two pressure members, and wherein each of the pressure members is mounted symmetrically to one of the at least two guiding members with respect to the horizontal reference direction to sandwich the first elementary panel.

3. A machining process by means of the machining and welding system according to claim 1 , the process comprising:

a step whereby pressure is exerted by the at least one pressure member on the second face of the first elementary panel so as to press the first elementary panel against the at least two guiding members;

a step whereby the at least one machining tool is rotationally driven about a vertical axis; and

a step whereby the machining device is moved with respect to the first elementary panel in the horizontal reference direction so as to remove a thickness from at least one of the faces of the first elementary panel.

4. The machining process according to claim 3 , wherein at least one of the faces of the first elementary panel is covered with a cladding and the machining device is moved with respect to the first elementary panel in the horizontal reference direction so as to machine the cladding.

5. The machining process according to claim 3 , wherein the process further comprises a friction stir welding step of friction stir welding the first and the second elementary panels after the step of removing a thickness from at least one of the faces of the first elementary panel.

6. A machining and welding system for machining and welding ends of two adjacent elementary panels together, the machining and welding system comprising:

a first support having a surface sized and shaped to support a first elementary panel;

a second support having a surface sized and shaped to support a second elementary panel in side-by-side configuration relative to the first elementary panel;

a crane structure connected to a mobile base, said crane structure having a displaceable functional unit attached thereto and the functional unit is adapted to separately connect to a machining device and to a friction stir welding device;

wherein the machining device comprises:

a chassis;

two spaced apart guiding members mounted on the chassis, the two spaced apart guiding members aligned along a horizontal reference direction and configured to guide one of the elementary panels;

a machining tool mounted on the chassis and positioned between the two spaced guiding members and displaceable, relative to the horizontal reference direction, in a vertical direction; and

a pressure member mounted on the chassis and movable by a cylinder to exert pressure on one of the elementary panels that is located between the pressure member and at least one of the two spaced apart guiding members; and

a friction stir welding device connectable to the functional unit without the machining device to friction stir weld an end of the first elementary panel and an end of the second elementary panel together.

7. The machining and welding system of claim 6 , wherein the pressure member comprises an arm connected to an upper pin and a lower pin, and comprises a roller below the lower pin.

8. The machining and welding system of claim 7 , wherein the chassis comprises a lower part comprising the two spaced apart guiding members and wherein the chassis also comprises an upper part comprising the pressure member, and wherein at least one blowing member is located on the upper part and oriented to blow at the one of the elementary panels that is located between the pressure member and the at least one of the two spaced apart guiding members.

9. The machining and welding system of claim 8 , wherein the pressure member is a first pressure member, and the machining and welding system further comprising a second pressure member mounted on the chassis and movable by a second cylinder to exert pressure on the elementary panel that is located between the second pressure member and at least one of the two spaced apart guiding members.