C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
C21D 1/00 (2006.01) C21D 1/26 (2006.01) C22F 1/00 (2006.01) C22F 1/04 (2006.01)
Patent
CA 2069189
A method is disclosed for developing the contours of forming tools for fabricating metal members of complex shape such as wing skin and fuselage panels for aircraft. A computer simulation is performed of the are forming process on a geometrical representation of a member having the-material properties of a desired metal member. The age forming process includes the steps of: a) overforming an unformed member in a tool having a contour of smaller curvature than the contour of the desired member; b) constraining the unformed member in the overformed condition; c) applying a thermal aging cycle to the member; d) cooling the constrained member following the thermal aging cycle; and e) releasing the constrained member from the condition imparted by step (b) and allowing it to spring back to a dimensionally stable condition which defines the desired memberhaving a surface contour of complex shape. From the simulation, the contour of smaller curvature in step (a) to produce the desired metal member following step (e) is determined.
Méthode de production des contours des outils de forme servant à fabriquer des éléments métalliques de forme complexe comme le revêtement de la voilure et les panneaux de fuselage d'un avion. Il y a simulation sur ordinateur du processus de formage par vieillissement sur une représentation géométrique d'un élément possédant des propriétés du matériau d'un élément métallique. Le processus de formage par vieillissement comprend les étapes suivantes : a) surformer un élément non formé dans un outil possédant un contour dont le rayon de courbure est inférieur au contour de l'élément voulu; b) contraindre l'élément non formé pour qu'il soit surformé; c) appliquer un cycle de vieillissement thermique à l'élément; d) refroidir l'élément contraint après le cycle de vieillissement thermique, et e) libérer l'élément contraint de la condition imposée à l'étape b) et le laisser revenir à une dimension stable qui définit l'élément voulu dont le contour de la surface est de forme complexe. A partir de la simulation, on établit le contour dont le rayon de courbure est plus petit à l'étape a) pour produire l'élément métallique voulu après l'étape e).
Foroudastan Saeed D.
Holman Mitchell C.
Aerostructures Corporation
Sim & Mcburney
LandOfFree
Method of developing complex tool shapes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of developing complex tool shapes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of developing complex tool shapes will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1367230