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

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Abstract

An actuating system of sectors of a device (2) for producing an airplane fuselage. Each sector is provided with an actuating system (27) of the screw - nut screw type in which a threaded element (31) is rotated about a rotation axis (32) by a motor (28). The threaded element (31) comprises an internal shaft (33) made of a first material and extending along the rotation axis (32) and an external tubular portion (34) made of a second material, mounted axially on a portion of the shaft and provided externally with a thread. Constraint means (38) are provided between the internal shaft (33) and the tubular portion (34) adapted to prevent angular displacement of the tubular portion (34) with respect to the internal shaft (33) allowing linear sliding of the tubular portion (34) with respect to the internal shaft (33). A thermal stress applied to the threaded element (31) produces the sliding of a free end portion (34a) of the tubular portion (34) with respect to the internal shaft (33) so that an increase in the temperature does not produce an overall elongation of the threaded element (31) maintaining each sector in the expanded lamination position previously defined.

Classe Tecnologica

F - Mechanical engineering, lighting, heating, weapons, blasting

Patent Office

European Patent Office

Numero Deposito

EP 2644940

Anno Deposito

2013

Anno Concessione

2013

Inventori Pugliesi

  • Mostarda Ettore

Tutti gli inventori

  • Sibona Guido
  • Mostarda Ettore
  • Iovine Giuseppe

Titolari pugliesi

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Tutti i titolari

  • Alenia Aermacchi S.p.A.