초록 ▼

The present invention relates to a turbine engine casing (1), in particular a turbojet exhaust casing, including at least one hoop (2) and at least one flange (3, 4) at least partially defining one end of said hoop (2), and at least one cap (5) positioned at least partially on the outer surface of t

The present invention relates to a turbine engine casing (1), in particular a turbojet exhaust casing, including at least one hoop (2) and at least one flange (3, 4) at least partially defining one end of said hoop (2), and at least one cap (5) positioned at least partially on the outer surface of the hoop (2), said cap (5) including a bore (6) capable of receiving an element for fastening the casing (1) to a bracket, the flange including an access cut-out (7a) substantially coaxial with the bore (6) of said at least one cap (5), said access cut-out (7a) enabling access to the bore (6), the access cut-out (7a) being provided at a release cut-out (7b) which is wider than the flange (3, 4) and constitutes a recess on said release cut-out (7b). The invention also relates to a turbine engine including a casing (1) and to a method for machining the latter according to the present invention.

대표청구항 ▼

1. A casing of a turbomachine, comprising a ferrule and a first flange delimiting at least partially one end of said ferrule, and a clevis positioned at least in part on an outer surface of the ferrule said clevis comprising a bore capable of receiving an element for attaching the casing to a suppor

1. A casing of a turbomachine, comprising a ferrule and a first flange delimiting at least partially one end of said ferrule, and a clevis positioned at least in part on an outer surface of the ferrule said clevis comprising a bore capable of receiving an element for attaching the casing to a support, wherein said clevis is faced with a release cut-out in the first flange between attachment points capable of cooperating with a second flange of the turbomachine, and wherein the first flange comprises an access cut-out substantially coaxial with the bore of the clevis, said access cut-out allowing access to the bore of the clevis, andwherein said access cut-out is arranged within the release cut-out in the first flange and constitutes an indentation on said release cut-out, said access cut-out having a generally U-shape with edges having a curve increasing progressively downward, andwherein said release cut-out retains sufficient first flange height to accommodate said indentation and maintains a covering surface between said first flange and said second flange. 2. The casing according to claim 1, wherein the access cut-out is in the form of a festoon and/or the release cut-out is in the form of a festoon. 3. The casing according to claim 1, wherein the access cut-out is positioned substantially in a middle of the release cut-out. 4. The casing according to claim 1, wherein the release cut-out exposes the clevis and the access cut-out exposes the bore arranged in said clevis. 5. The casing according to claim 1, wherein the ferrule is cylindrical, and the first flange is positioned on a circumference of an end of said ferrule. 6. The casing according to claim 1, wherein the ferrule comprises a plurality of said devises positioned on the outer surface of said ferrule. 7. The casing according to claim 6, wherein the first flange comprises a plurality of said access cut-outs and a plurality of said release cut-outs positioned facing a corresponding plurality of said devises. 8. A turbomachine, comprising the casing according to claim 1 and a mixer comprising said second flange, wherein the second flange is facing the first flange of the casing and obstructs at least partially the access cut-out of said first flange of the casing. 9. A method of machining a casing for a turbomachine, said turbomachine comprising: a casing comprising at least one ferrule, comprising a ferrule and a first flange delimiting at least partially one end of said ferrule, and a clevis positioned at least in part on an outer surface of the ferrule said clevis comprising a bore capable of receiving an element for attaching the casing to a support, wherein said clevis is faced with a release cut-out in the first flange between protruding attachment points configured to cooperate with a second flange of the turbomachine, wherein the first flange comprises an access cut-out substantially coaxial with the bore of the clevis, said access cut-out allowing access to the bore of the clevis, wherein said access cut-out is arranged within said release cut-out in the first flange and constitutes an indentation on said release cut-out, wherein the first flange further comprises a second release cut-out, wherein said access cut-out has a generally U-shape with edges having a curve increasing progressively downward, and wherein said release cut-out retains sufficient first flange height to accommodate said indentation and maintains a covering surface between said first flange and said second flange, anda mixer, comprising said second flange, wherein the second flange is facing the first flange of the casing and obstructs at least partially the access cut-out of said first flange, wherein said method comprises the following steps: making said ferrule with said first flange,machining said clevis on the outer surface of the ferrule,forming the release cut-out of the first flange so that the clevis is exposed,drilling the clevis,forming the access cut-out in the first flange co-axially with the bore of the clevis.