Positioning system of sectors of a device for producing an airplane fuselage

A positioning system configured to operate with sectors of a device (2) for producing an airplane fuselage in which a lamination mandrel (4) is defined by an external surface (5) which defines a rotation solid with respect to a symmetry axis (7);

• said lamination mandrel (4) is adapted to receive and support a band of impregnated synthetic material which is deposited and wound on the external surface (5) forming a plurality of overlapping layers which are subjected to a high temperature polymerisation process under vacuum for forming a structural section of the airplane;
• the lamination mandrel (4) comprises a plurality of sectors (12) borne by a support structure which is elongated along said axis (7), angularly spaced about the axis (7) and mobile along guides (17) borne by the support structure (10) under the thrust of an actuator (60) between:
• an expanded lamination position in which the sectors (12) have greater rectilinear edges (13) parallel to the axis (7) and arranged side by side and the external surfaces of the sectors (12) opposite to the axis (7) define together said external surface (5);
• and
• a contracted disassembling position in which at least part of said sectors (12) approaches the axis (7) moving away from the trace of the surface (5) to reduce the radial dimensions of the mandrel and allow the extraction of the mandrel itself (4) from the structural section of the airplane;
• each guide (17) comprises a fixed part (17g) borne by said support structure (10) and a mobile part (18) which slides along/with respect to the fixed part (17g) along a rectilinear direction H,
• characterised by comprising a positioning device (P) arranged between a portion of each mobile part (18) facing the respective sector (12) and a stiffening structure (21) of a sector (12);
• said, positioning device (P) allowing the adjustment of the position of the sector (12) with respect to the guide along two directions (x, y) which lie in a plane RP perpendicular to the axis H of the guide (17) itself;
• said positioning device comprises a central body (45) arranged in a seat (42) obtained in said mobile part (18) and provided with a portion (51) which couples (52) with the support structure (21) of said sector (12);
• the position of said central body (45) within said seat (42) being adjustable by positioning within said seat (42) a plurality of catch bodies (53) which abut on side walls (47) of said central body (45) to displace it.