Method for producing fuselage cell sections for aircraft...

B - Operations – Transporting – 29 – C

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B29C 70/44 (2006.01)

Patent

CA 2688247

The invention relates to a production method for producing seamless, integral and essentially hollow cylindrical components 5, in particular fuselage sections of aircraft. The method comprises the following steps: a) Application of a first vacuum film 3 to a stable winding core 2 and evacuation of the first vacuum film 3, b) depositing of the fuselage section 5 in laminated fashion on the winding core 2 by winding the same, c) aeration of the first vacuum film 3, d) application of an outer mould 6, that is unstable compared to the stable winding core, to the fuselage section 5, wherein the winding core 2 stabilises the outer mould 6, e) application of a second vacuum film 7 to the outer mould 6 and evaluation of the second vacuum film 7 in order to drawl the fuselage section 5 closer to the outer mould 6 and detach it from the winding core 2 at least in regions, f) hardening of the entire arrangement in an autoclave to produce the finished fuselage section. This gives rise to a high surface quality of the component 5. Moreover, very high dimensional stability is achieved, particularly in terms of a cross-sectional geometry of the component 5 that is to be adhered to. In addition the invention relates to a device for executing the method.

L'invention porte sur un procédé de production de composants cylindriques, essentiellement creux, en une seule pièce et sans soudure (5), en particulier des sections de fuselage d'avion. Le procédé comporte les étapes suivantes : a) l'application d'un premier film sous vide (3) sur un noyau d'enroulement stable (2) et l'évacuation du premier film sous vide (3), b) le dépôt de la section de fuselage (5) d'une manière stratifiée sur le noyau d'enroulement (2) par enroulement de celui-ci, c) l'aération du premier film sous vide (3), d) l'application d'un moule externe (6), qui est instable en comparaison avec le noyau d'enroulement stable, sur la section de fuselage (5), le noyau d'enroulement (2) stabilisant le moule externe (6), e) l'application d'un second film sous vide (7) sur le moule externe (6) et l'évacuation du second film sous vide (7) afin de rapprocher par traction la section de fuselage (5) du moule externe (6) et de la détacher du noyau d'enroulement (2) au moins dans certaines régions, f) le durcissement de tout l'agencement dans un autoclave pour produire la section de fuselage finie. Ceci confère une haute qualité de surface au composant (5). De plus, on obtient une stabilité extrêmement élevée, en particulier en termes de géométrie de section transversale du composant (5) à laquelle on doit se conformer. De plus, l'invention porte sur un dispositif pour mettre en AEuvre le procédé.

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