Patent application number | Description | Published |
20120174384 | TOOLING AND A METHOD FOR HOT FORGING PIECES OF SHEET METAL - The invention provides tooling and a method for hot forging pieces of sheet metal that are to form metal reinforcement mounted on the leading or trailing edge of a turbine engine blade, by means of bottom and top matrices each presenting a twisted elongate surface for use in shaping an initially plane piece of sheet metal, the shaping surface of the bottom matrix presenting a high portion, a low portion, and two end zones. The bottom matrix includes studs for positioning and guiding the piece, the studs being situated at the periphery of the corresponding shaping surface. | 07-12-2012 |
20120267039 | METHOD OF FABRICATING A TURBINE ENGINE BLADE OUT OF COMPOSITE MATERIAL - A method of fabricating a turbine engine blade out of composite material includes three-dimensionally weaving yarns to make a preform including root and airfoil portions that are connected together by oblique side faces for forming bearing surfaces enabling the root to bear against an assembly slot in a rotor disk. The method also includes compacting the preform in a mold having a cavity with first oblique side faces corresponding to the above-mentioned side faces of the preform, and second oblique side faces bearing against the root portion of the preform and at angles of inclination opposite to those of the first oblique side faces. Further, the method includes vacuum injecting a resin into the mold and polymerizing the resin. | 10-25-2012 |
20120317810 | METHOD FOR MAKING A METAL REINFORCEMENT FOR THE BLADE OF A TURBINE ENGINE - A method for making a metal reinforcement for the leading edge or trailing edge of the blade of a turbine engine that includes making a metal insert defining the base of the metal reinforcement; positioning the metal insert at the end of a blank of a shaping tool, the blank repeating the shape of the turbine-engine blade; shaping a planar metal sheet on the metal insert and the blank of the shaping tool using a superplastic hot-shaping method. | 12-20-2012 |
20130180304 | "MULTI-EFFECT" FORMING TOOLING FOR HIGH-TEMPERATURE FORMING - A forming tooling including a fixed part and a moving part set in action by a one-way press, in a first direction, the tooling varying between an open position and a closed position in which the moving part applies pressure to the fixed part; the moving part including moving dies capable of starting to deform the metal workpiece through a translational movement of the dies in a second direction simultaneous with the translational movement of the dies in the first direction during closure of the tooling, the moving dies being capable of moving away from the metal workpiece through a reverse translational movement of the moving dies, in the second direction, simultaneously with the translational movement of the moving dies in the first direction during opening of the tooling. | 07-18-2013 |
20130221570 | METHOD OF MANUFACTURING A COMPOSITE PART BY INJECTING RESIN INTO A TOOL, AND DEVICE COMPRISING THIS TOOL - The resin that will fill a cavity for a part to be moulded and will be polymerised in it, does not reach the cavity until having circulated in a long conduit, formed on the parting line of the tool containing the cavity, so as to take advantage of the thermal inertia of the tool to heat the resin to the required stable temperature, instead of heating it in a less stable manner in the thermally insulated pipes external to the tool. Temperature variations resulting either from heat losses in the pipes external to the tool, or from overheating due to excessively fast polymerisation are thus avoided. | 08-29-2013 |
20130283586 | METHOD OF MAKING A PIECE OF METAL REINFORCEMENT - The invention provides a method of making a piece of metal reinforcement for mounting on the leading or trailing edge of a composite turbine engine blade, the method comprising the steps consisting in positioning two metal sheets ( | 10-31-2013 |
20130294920 | METHOD OF MAKING A METAL REINFORCING PIECE - A metal reinforcing piece for mounting on a leading edge or trailing edge of a composite blade for a turbine engine is made by shaping two metal sheets, positioning them on either side of a core, assembling the two sheets together around the core under a vacuum, shaping them on the core by hot isostatic compression, and cutting them to separate the reinforcing piece and release the core. A predetermined roughness is given to at least a portion of the surface of the core and is transferred to a corresponding portion of an inside surface of the reinforcing piece by the hot isostatic compression. | 11-07-2013 |
20130294924 | METHOD FOR MANUFACTURING A TURBINE ENGINE PART BY INJECTION OF RESIN UNDER PRESSURE - A method for manufacturing a thick turbine engine part in a composite material by injection of resin under pressure. A fiber preform is positioned in a mold, a resin composition is injected into the mold, the resin composition is polymerized in the mold so as to obtain the part, and the part is removed from the mold. Prior to the injection of the resin composition, a mold release shim is inserted between the fibrous preform and a wall of the mold, and between the polymerization of the resin composition and the removal of the part from the mold, the mold release shim is extracted. | 11-07-2013 |
20130309096 | METHOD FOR BONDING MANUFACTURING INTERMEDIARY PARTS, REFERRED TO AS IPS, TO A TURBOMACHINE BLADE MADE OF COMPOSITE MATERIAL - A method for bonding additional parts to a composite-material turbomachine part in a thermostatic oven includes a step of placing this composite-material turbomachine part equipped with the additional parts on a rigid support that cannot deform at the operating temperature and pressure and that is configured to espouse the desired final shape of the composite-material turbomachine part. The composite-material turbomachine part equipped with these additional parts is covered with a vacuum bag. The edges of this vacuum bag are sealed with respect to the non-deformable rigid support. A vacuum of determined pressure is applied to the vacuum bag. The determined operating pressure is applied to the vacuum bag in order to hold the composite-material turbomachine part equipped with these additional parts firmly against the non-deformable rigid support, the whole entity thus formed is heated to the operating temperature in the thermostatic oven for a determined time. | 11-21-2013 |
20140086753 | METHOD OF REINFORCING A MECHANICAL PART - A method of reinforcing a mechanical part, for example a turbine engine part, the part being made by assembling together two portions, the method including: inserting reinforcing mechanisms of elongate shape at least in part in at least one recess formed in one of the portions and opening out into a junction surface between the portions; and assembling the two portions together. | 03-27-2014 |
20140208819 | DEVICE FOR SHAPING A METAL SHEET BY DIE STAMPING - A device for shaping a metal sheet by die stamping, the device including first and second trunnions configured to be fastened respectively to two opposite ends of a sheet, the sheet being configured to be shaped by die stamping, wherein the first and second trunnions define respective first and second bearing surfaces configured respectively to guide turning of the trunnions, the first bearing surface defining a peripheral groove around a pivot axis of the first trunnion while the second bearing surface is smooth along a pivot axis of the second trunnion. | 07-31-2014 |
20150020958 | METHOD OF PRODUCING TOOLING FOR RESIN TRANSFER MOLDING - A method of producing tooling for molding a part by resin transfer molding, including: producing a model of the part; producing a countermold with an outside surface presenting an indentation complementary to a first side of the model; placing the model in the indentation of the countermold; draping a plurality of superposed textile layers that are impregnated with thermosetting resin on the model and on the outside surface of the countermold to shape a first half-shell; curing the first half-shell; separating the countermold from the model and from the first half-shell; draping a plurality of superposed textile layers on the first half-shell and the first side of the model, to shape a second half-shell; and curing the second half-shell. | 01-22-2015 |
20150086377 | METHOD OF MAKING A METAL REINFORCING MEMBER FOR A BLADE OF A TURBINE ENGINE - A method of making a metal reinforcing member that is to be mounted on a leading edge or a trailing edge of a composite blade of a turbine engine, the method including: shaping two metal sheets, positioning them on either side of a core including at least one recess that is to form a mold for a spacer for positioning the reinforcing member, assembling them together under a vacuum, conforming them against the core by hot isostatic compression, and cutting them to separate the reinforcing member and release the core. | 03-26-2015 |
20150086378 | METAL STRUCTURAL REINFORCEMENT FOR A COMPOSITE TURBINE ENGINE BLADE - In structural reinforcement for a composite blade of a turbine engine, the reinforcement being for adhesively bonding to a leading edge of the blade and presenting over its full height a section that is substantially V-shaped, having a base that is extended by two lateral flanks, there is provided an assembly of a plurality of fiber bundles that is mounted in at least one housing in the base, which assembly defines fiber content that varies along the full height of the housing. | 03-26-2015 |