Method for manufacturing a monolithic aircraft door by die-cutting and machining
AssigneeAubert & Duval
InventorsLudovic Bourgeon, Arnaud Blanckaert, Philippe Gail, Xavier Guyonnet
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Abstract
A method for manufacturing an aircraft door with an integral structure. The method includes the following steps: producing a forged blank (7); die-cutting the forging blank (7) between a substantially smooth lower die (8) and an upper die (9) defining a plurality of cells and producing a die-cut part having a honeycomb structure having an open face and a closed face closed by a wall; an inner wall of the honeycomb structure is machined to define at least one recess defined by a web connecting the closed face and the open face and a base protruding substantially perpendicular to the web on the open face of the die cut component.”
Claims12
A method for manufacturing an aircraft door having a monolithic structure comprising an outer skin (1) and an internal frame (2) in one piece, the internal frame (2) having at least one portion having:
- a core (5) attached transversely to the outer skin (1);
- and a flange (6) opposite the outer skin (1);
- the method comprising the following steps:
- producing a forged blank (7) with a constant thickness from a metal alloy that can be stamped;
- stamping the forged blank (7) between a smooth lower die (8) and an upper die (9) defining cells, a clearance being retained between the lower die (8) and the upper die (9), and obtaining a stamped part (26) with a cellular structure having an open face (27) and a closed face (28) closed by a wall with a thickness corresponding to the clearance;
- machining the internal walls of the cellular structure of the stamped part (26) to define at least one reinforcement delimited:
- by a core (5) connecting the closed face (28) and the open face (27);
- and by a flange (6) projecting substantially perpendicularly to the core (5), on the open face (27) of the stamped part (26).
Dependencies are inferred from the claim text.