Method for machining an attachment flange of an aircraft turbomachine case
AssigneeSafran Aircraft Engines
InventorsVincent Bernard Serge Most, Hubert Jean Marie Fabre
Life of this patent
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Abstract
A method of machining an attachment flange of an aircraft turbomachine case, the method also including a system to machine the two opposite surfaces of the flange, and including a shape follower machining module, this module being designed to follow the shape of the flange and including a first structure equipped with a first machining tool, and a second structure equipped with a second machining tool, the flange fitting between the structures such that its two opposite surfaces are machined by tools, the module also including shape follower elements carried by the structures; and a device to drive movement of the machining module along a circumferential direction of the flange.
Claims7
A method of machining an attachment flange for an aircraft turbomachine case, said method being for simultaneously machining two opposite surfaces of the flange approximately along the direction of its thickness, making use of a machining system comprising a machining module, the machining module being intended to follow the shape of the flange when it is moved along the circumferential direction relative to the axis of the case, the machining module comprising a first structure fitted with a first machining tool and a second structure fitted with a second machining tool and fixed to the first structure, the flange being intended to be fit between the first and second structures such that the two opposite surfaces are machined by the first and second machining tools, the machining module also comprising shape follower elements carried by the first and second structures, the method including the following steps:
- placing the machining module on the case attachment flange, with the first and second machining tools and shape follower elements in a retracted position;
- bringing the first and second machining tools and shape follower elements into contact with opposite surfaces of the flange;
- and
- displacing the machining module along the circumferential direction of the flange, displacement during which the machining module follows the shape of the flange,
- wherein the flange is configured to fit between the first and second structures such that the two opposite surfaces of the flange are machined by the first and second machining tools respectively,
- wherein the machining module comprises the follower elements listed below:
- at least one first and one second follower elements carried by the first structure and located on opposite sides of the first machining tool along the circumferential direction;
- and
- at least one third and one fourth follower elements carried by the second structure and located on opposite sides of the second machining tool along the circumferential direction.
Dependencies are inferred from the claim text.