WO2012152687A1 - Procédé de filage à chaud pour réaliser une pièce métallique, outil de filage pour sa mise en oeuvre et tige de train d'atterrissage ainsi réalisée - Google Patents
Procédé de filage à chaud pour réaliser une pièce métallique, outil de filage pour sa mise en oeuvre et tige de train d'atterrissage ainsi réalisée Download PDFInfo
- Publication number
- WO2012152687A1 WO2012152687A1 PCT/EP2012/058235 EP2012058235W WO2012152687A1 WO 2012152687 A1 WO2012152687 A1 WO 2012152687A1 EP 2012058235 W EP2012058235 W EP 2012058235W WO 2012152687 A1 WO2012152687 A1 WO 2012152687A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spinning
- punch
- tool
- billet
- tubular portion
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/475—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
- B29C48/48—Two or more rams or pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/03—Making uncoated products by both direct and backward extrusion
- B21C23/035—Making products of generally elongated shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/18—Making uncoated products by impact extrusion
- B21C23/186—Making uncoated products by impact extrusion by backward extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K21/00—Making hollow articles not covered by a single preceding sub-group
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/001—Devices not provided for in the groups B64C25/02 - B64C25/68
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12389—All metal or with adjacent metals having variation in thickness
Definitions
- Hot spinning method for producing a metal part, spinning tool for its implementation and landing gear rod thus produced
- the invention relates to the field of metallurgy, and more particularly to hot-spinning processes for manufacturing a metal part comprising a tubular part and a complex shape, mainly for aeronautical applications, such as a landing gear pin. 'aircraft.
- a landing gear rod comprises two parts: a tubular portion called barrel, and a yoke that extends the non-emergent end of the barrel.
- the shaft penetrates inside the main part of the so-called box train, and forms therewith a slide connection constituting in particular a suspension-damping system.
- the train rod is also called sliding rod.
- the axle of the wheels (which are at least two in number) is connected to the yoke by a pivot connection.
- the screed is of complex shape because it includes, in particular, one or more radial and / or axial growths (extensions).
- This type of part which requires high mechanical properties of use (specific resistance, toughness, fatigue resistance, etc.), is generally produced in materials that are difficult to cold-convert by stamping, forging, rolling and / or or spinning.
- the materials constituting these parts are, for example, titanium alloys or steels having cold flow resistance (flow stress) which is greater than or equal to 200 MPa.
- At least one non-opening bore of the barrel to give it its tubular shape, followed by a finishing bore, to achieve the inner bore of the barrel.
- This type of process is not suitable for the manufacture of hot-only transformable parts which, in addition, comprise one or more complex shapes. Indeed, for these processes, and although the shape of the part of GB-A-1 459 641 (which is not a landing gear part but a hydraulic cylinder) is relatively simple, several spinning steps are nevertheless required. Starting from this type of process, the addition of a complex shape would imply several additional spinning steps that would be incompatible with a hot transformation, since the part to be manufactured would cool during the process, thus preventing the execution of last stages of spinning.
- the object of the invention is therefore to propose a method for producing a metal part comprising a tubular part of which one of the two ends is extended by a so-called "complex" shape in the sense previously explained, which meets this need and which provides a solution to the aforementioned drawbacks.
- the subject of the invention is a hot-spinning method for producing a metal part comprising a tubular part, one of whose two ends is extended by a complex shape, said method comprising:
- the tooling comprising a die having an impression in which the billet is placed and whose shape substantially corresponds to the external shape of the part to be obtained after spinning ;
- said metal has a cold flow stress greater than or equal to 200 MPa, in that said complex shape is made by direct spinning and said tubular part is made by inverse spinning, and in that the process comprises successively :
- the complex form can be non-axisymmetric.
- the end of the tubular portion extended by the complex shape may be non-emergent, and the complex shape has an area of space that extends radially beyond the outer periphery of the tubular portion.
- the reverse spinning step can succeed the direct spinning step without intermediate reheating of the semi-worked piece.
- the cavity formed in the die and receiving the billet may be of generally cylindrical shape and non-emergent with a bored portion, the punch (s) being designed to be able to move in the bore portion of the cavity.
- the first punch may have an outer diameter that is adjusted to the inner diameter of the bore portion of the cavity to prevent reverse flow of the material during the direct spinning step.
- the second punch may have a smaller diameter than the first punch to allow reverse spinning of the material around the second punch.
- a cylindrical sleeve can be fixed around the second punch, said cylindrical sleeve having an outer diameter which is adjusted to the inner diameter of the bore portion of the cavity, said cylindrical sleeve and the second punch defining an annular zone for forming the tubular portion of the room.
- the matrix can be heated during spinning.
- the spun may be of titanium alloy.
- the spun may be Ti 10-2-3 alloy or Ti 5-5-5-3 alloy.
- the piece may be a landing gear rod, and during the prior step of heating the billet, said billet is brought to a temperature between 700 ⁇ and the beta-transus temperature of the alloy, and said temperature is maintained for at least 2 hours.
- the diameter of the tubular portion of said piece may be between 350 and 500 mm, and said temperature is maintained for at least 4 hours.
- the working speed of the first punch (4) is less than or equal to 20 mm / s, preferably less than or equal to 15 mm / s
- the speed of the second punch (5) is less than or equal to 30 mm / s, preferably less than or equal to 20 mm / s.
- the spun can be steel
- the spun may be of NC40SW steel.
- the piece may be a landing gear rod, during the previous step of heating the billet, the billet is brought to a temperature between 950 ' ⁇ and 1250 ° C, and the heating temperature is maintained for at least 2h.
- the working speed of the first punch may be less than or equal to 40 mm / s, and in the second spinning step, the working speed of the second punch is less than or equal to 60 mm / sec. s.
- the invention also relates to a spinning tool for implementing the preceding method, characterized in that it comprises a matrix consisting of at least two parts separated by a joint plane located at the complex shape, such that when the two parts of the die are disassembled, it is possible to evacuate the extruded piece outside the spinning tool, and in that it comprises two punches, the first punch enabling said form to be made complex by a direct spinning operation on the billet and the second punch to achieve all said tubular portion by a reverse spinning operation.
- It may comprise a heating device.
- the heater may be an induction heater.
- the tool may comprise a cylindrical sleeve fixed around the second punch, said cylindrical sleeve having an outer diameter which is adjusted to the internal diameter of the bore portion of the cavity, said cylindrical sleeve and the second punch defining an annular zone intended to form the tubular part of the room.
- the invention also relates to a landing gear rod made of titanium alloy or high strength steel, characterized in that it is obtained by the implementation of the above method and comprises a tubular portion forming the barrel of the train rod and a complex shape forming the clevis of the rod.
- the hot-spinning method according to the invention comprises the following succession of steps:
- a step of transferring the heated part to a press spinning machine comprising a die having an impression in which is placed the piece to be spun, and whose shape corresponds to the external shape of the piece to be obtained after spinning;
- At least one direct spinning step using a first punch to make only the complex shape located at one end of the piece a step of replacing the first punch with a second punch on the spinning tool, the second punch being mounted in a position coaxial with that occupied previously by the first punch, so that the second punch can move in the same direction; direction and the same meaning as the first punch;
- complex shape is intended to mean a shape of the part whose area of space extends radially beyond the outer periphery of the tubular part.
- the room may not be totally revolutionary. This is particularly the case of a landing gear rod whose clevis complex shape is non-axisymmetric, and has radial / axial growths.
- the formatting may also include more than two spinning steps, each made with a different punch.
- the spinning method makes it possible, with a single die and at least two different punches, to produce from a raw element of material (piece of material), and without having to move the piece of a tooling to another between two spinning steps, a part comprising both a tubular portion and a complex shape at the non-emergent end of the tubular portion.
- the method thus makes it possible to manufacture, with a simple series of steps, pieces of complex shapes in materials that are usually difficult to cold-convert by stamping, forging, rolling and / or spinning, such as steels or alloys, in particular titanium, having cold a flow stress greater than or equal to 200 MPa, especially those intended for aeronautical applications.
- the invention differs from known methods for producing parts comprising a tubular part extended by a complex shape, described for example in documents FR-A-1 573 666, DE-A-1929147, US-A-2006/016077 and US-A-2006/0016237 in that both:
- the first spinning step is dedicated to the realization of the complex shape, the entirety of the tubular part being performed in the second step, while in the last two documents cited, the formation of the tubular part starts at the first spinning stage.
- the parts manufactured according to the method of the invention can be massive, as are, for example, landing gear rods. These can have a rod diameter greater than 400 mm and reach 2500 mm long and more.
- the central hole of the train rod is made directly during the reverse spinning step, which avoids having to subsequently drill the piece by removal of material, which would be restrictive for the part and risk of damage it.
- the piece After its manufacture, the piece is subjected to conventional non-destructive tests.
- the reverse spinning step immediately follows the direct spinning step, that is to say without intermediate heating of the workpiece. This is made possible by the fact that the workpiece is not moved from one tool to another between the different spinning steps. It can therefore be kept hot enough throughout the process to allow it to easily deform during the spinning steps.
- the material to be spun flows more difficult to achieve the complex shape than to achieve the tubular shape by reverse spinning. This is why, in the first variant of the invention, the complex shape is produced by direct spinning, before making the tubular part by inverse spinning.
- the punch must open the workpiece, there is a risk of deformation of the end of the workpiece or tearing of the material. This is why the end of the tubular portion which is extended by the complex shape is preferably non-emergent.
- the end of the tubular portion which is extended by the complex shape is preferably non-emergent.
- the cavity formed in the die and receiving the piece to be spun is of generally cylindrical and non-emergent shape, with a bored portion.
- the first and second punches are mounted to slide in the bore of the footprint.
- the second punch has a diameter smaller than that of the first punch to allow reverse spinning of the material around the second punch.
- the first punch has an outside diameter, which at the operating clearance, is adjusted to the bore of the die cavity to prevent reverse flow of the material during the direct spinning step. We thus benefit from all the power of the press to achieve the complex shape.
- the spunbond is made of titanium alloy, and preferably of Ti 10-2-3 (Ti, 10% V, 2% Fe, 3% Al) or Ti 5-5. 5-3 (Ti, 5% Al, 5% V, 5% Mo, 3% Cr).
- the temperature of the titanium alloy part is brought to a temperature of between 700 ° C. and the beta-transus temperature of the titanium alloy (approximately 800 ° C. for a Ti 10 2-3 and about 850 ° C for a Ti 5-5-5-3).
- the heating temperature is maintained for at least 2 hours, for example between 4 and 6 hours for a part with a diameter of between 400 and 500 mm, so as to obtain a uniform temperature in the whole room.
- the spun part is made of high-strength steel and preferably made of NC40SW steel (40NiSiCrMo7).
- NC40SW steel has a nominal composition which, conventionally, in percentage by weight, is substantially as follows:
- the steel part is brought to a temperature of between 950 ° -150 ° to lower the flow stresses of the material and to allow heat-spinning of the material.
- the heating temperature is determined so that the flow stresses of the material during spinning are less than 200 MPa and preferably less than 150 MPa.
- the heating temperature is maintained for at least 2 hours, for example between 4 and 6 hours for a piece with a diameter of between 350 and 500 mm, again with the aim of guaranteeing homogeneity of the temperature in the whole room.
- the invention is also based on a tool for implementing the aforementioned method.
- the matrix comprises at least two elements, separated by a joint plane which is at the part of the tooling imposing the complex shape, so that, when the two elements are disassembled, it is possible to evacuate the extruded part outside the spinning tool. Unlike the prior art, the evacuation of the piece spun out of the die does not need to be performed on the punch side, which would be impossible with a piece of complex shape.
- a landing gear rod made of a titanium alloy or a high-strength steel suitably chosen, comprising a tubular part which constitutes the shaft of the rod and a complex shape that constitutes the clevis of the stem.
- the nominal working speed of the first punch in direct spinning is less than or equal to 20 mm / s, preferably less than or equal to 15mm / s, and that of the second punch in inverse spinning is less than or equal to 30 mm / s, preferably less than or equal to 20 mm / s.
- the nominal working speed of the first punch is preferably less than or equal to 40 mm / s and that of the second punch is preferably less than or equal to 60 mm / s.
- the working speed of the punches is preferably reduced towards the end of the punch stroke, which corresponds to the end of the filling of the material in the imprint of the die. This is to ensure better filling of the footprint.
- FIGS. 7 to 11 which show the succession of steps of a second variant of the method according to the invention resulting in the manufacture of the part of FIG.
- Figure 1 illustrates a landing gear rod 1 in perspective and in partial section as obtained after the implementation of the method according to the invention.
- the rod 1 comprises a tubular part 2 seen in partial section, constituting the drum, and a part complex 3 constituting the screed.
- the tubular portion is non-emergent.
- Figures 2 to 6 are sectional views showing a spinning tool and the various steps of a first variant of a method according to the invention for manufacturing the landing gear rod 1 illustrated in Figure 1.
- Figures 2 to 6 are schematic.
- the guiding and centering means of the punches 4, 5 with respect to the die 6 are not shown. They are quite classic designs on tools of this kind.
- the landing gear rod 1 shown in FIG. 1, which is for example made of titanium alloy Ti 10-2-3, is obtained after the implementation of the method according to the invention.
- This geometry although very close to the finished part, is not definitive because the part must classically, before being assembled to the other parts constituting a landing gear, undergo machining to remove extra thicknesses and to obtain surfaces functional as well as heat treatments to, in particular, achieve the mechanical properties of jobs required. But no heavy shaping operation is needed later
- This piece with a total length of about 2500 mm for example, mainly comprises two parts:
- a non-emergent tubular portion 2 which forms the shaft of the rod 1, and whose outer diameter is about 386 mm for example;
- the shape of the yoke is said to be "complex" in that it comprises protrusions or projections 7, 8, 9, 10 which extend radially and axially beyond the envelope of the tubular portion 2.
- clevis 3 has an area of space which extends radially beyond the outer periphery of the tubular portion 2.
- Figures 2 to 6 show a spinning tool and four successive steps of the process.
- Figures 2 and 3 correspond to the same spinning step according to two different views shifted by 90 °.
- FIGS. 4 to 6 represent the tooling seen from the same angle as in FIG. 3.
- the spinning tool is placed under a unidirectional press with a single slide, exerting its action on the successive punches 4, 5, and whose power is for example about 15 kt.
- the tooling comprises a die 6 and a set of two different punches 4, 5.
- the matrix 6, whose precise constitution in multiple parts will be exposed later, is provided with a generally cylindrical cavity 12, oriented vertically, and open at its upper end 13 to receive a billet 1 1 of material to be spun.
- the shape of the impression 12 combined with that of the second punch 5 corresponds to the shape of the rod 1 of the train to be obtained after the last spinning step of the method according to the invention.
- the upper portion 21 of the recess 12 is bored and corresponds to the outside diameter of the barrel 2, except when the second punch 5 is provided with an outer cylindrical sleeve as will be envisaged in the second embodiment of the invention (no shown).
- the bored cylindrical portion 21 of the cavity 12 makes it possible to guide the first punch 4 more effectively, and possibly the second punch 5 when the latter is provided with an outer cylindrical sleeve.
- the lower portion 22 of the cavity 12 corresponds to the complex outer shape of the yoke 3 of the rod 1 of the train.
- FIGS. 2 and 3 represent, according to two angles of view offset by 90 °, a piece of material 11 placed in vertical position in the spinning tool, more precisely in the cavity 12 of the die 6 of the spinning tools.
- the billet 1 1 Ti 10-2-3 is cylindrical in shape of revolution, has a diameter of about 380 mm and a length of about 2000 mm.
- the piece of material 11 is typically derived from a forged ingot, or a forged ingot and then rolled when the billet must have a relatively small diameter, for example less than 100 mm. It may, for this purpose, be necessary after the forging to proceed to several rolling steps, including a step with a high rate of reduction ("blooming") following the forging.
- the slurry of material 11 was preheated in a treatment furnace at a temperature of 730.degree. This temperature was maintained for about 6 hours, so as to obtain the same temperature between the skin and the heart of the billet 1 1 material.
- This heat treatment is intended to allow hot deformation of the material of the billet 11 during the spinning steps (" hot spinning steps "). Cold deformation of a piece of Ti 10-2-3 would be difficult, or prematurely damage the spinning tool.
- the first spinning punch 4 is pre-engaged in the cavity 12 of the matrix 6.
- the upper portion 21 of the cavity 12 has a cylindrical shape of revolution corresponding to the outside diameter of the barrel 2 of the landing gear rod 1 after spinning.
- the lower portion 22 of the cavity 12 has a complex shape comprising protrusions, that is to say axial and radial projections.
- the complex shape is the negative of that of the clevis 3 of the train rod.
- the upper portion 21 of the cavity 12 is bored so that the outer diameter of the first punch 4 adjusts, to the operating clearance, to this bore 21.
- FIG. 4 represents the end of the step of direct spinning of the piece of material 1 1 by displacement and sliding of the first punch 4 in the bore 21 of the impression 12.
- This direct spinning step makes it possible to obtain the end of lopin 1 1 a complex shape that corresponds to that of the yoke 3 of the rod 1 train.
- the fact of making the complex shape of the yoke 3 of the rod 1 by direct spinning before making the tubular portion 2 of the same rod 1 by reverse spinning allows the first punch 4 to exert a force which is distributed over the entire upper surface of the billet 1 1 material, and not only on an annular end which corresponds to the open end of the tubular portion 2 of the rod 1 train.
- annular end would encase a greater pressure on its surface than on the end of a piece of solid material.
- the speed of advance of the punch can be, at the beginning of spinning, about 15 mm / s. As has been said, at the end of spinning this speed can be reduced progressively to ensure a better filling of the complex shape 22 of the matrix 12.
- the direct spinning step is at this stage completed, and a workpiece 15 has been obtained.
- the complex shape of the yoke 3 is achieved, and the first punch 4 has been removed.
- the punch 4 has been replaced by the second punch 5. It can be seen that the second punch 5, of smaller diameter than the first 4, is already pre-engaged in the upper portion 21 of the cavity 12 of the matrix 6. Centering means of the punch 5 (not shown) ensure that its longitudinal axis coincides with the longitudinal axis of the cavity 12, as was the longitudinal axis of the first punch 4.
- Figure 6 corresponds to the reverse spinning step ensuring the shaping of the tubular portion 2 of the rod 1 train. Due to the force exerted by the second punch 5 on the half-worked piece 15, the material rises along and around the second punch 5 to form the tubular portion 2 (the barrel) of the rod 1 train. The final piece 1 is thus obtained, to which it is only necessary to add finishing machining operations in order to eliminate excess thicknesses and to obtain functional surfaces, as well as heat treatments that are used in particular to achieve the properties. mechanical requirements.
- the speed of advance of the second punch 5 is at the beginning of spinning about 20 mm / s. Preferably, it can be progressively reduced at the end of spinning.
- the half-worked part 15 is always hot worked.
- the temperature of the piece 15 could be maintained for several reasons.
- the first reason is that the half-worked part 15 did not need to be moved from one tool to another since the same die 6 is used for the two spinning steps. Thus, the various steps can be linked quickly without the half-worked part 15 has time to cool.
- a second reason is that at each spinning step, the punch 4 or 5 transmits energy to the billet 1 1 or the half-worked part 15, energy which is converted into heat and contributes to the maintenance of the temperatures of the metal to work and matrix 6.
- the tooling can also be heated and maintained in temperature before, or even during spinning, for example using an induction heating system.
- the final part 1 is removed from the tooling.
- the die 6 of the tool is assembled in two parts 16, 17.
- the joint plane 18 of the two parts 16, 17 is substantially perpendicular to the longitudinal axis of the die 6 and located at the two radial extensions 9, 10 (radial protuberances) to be able to clear the final piece 1 after having reassembled the second punch 5 and disassembled the two parts 16, 17 of the matrix 6.
- the joint plane 18, in the example shown is not regular and passes through the points of the periphery of the complex shape 3 which are furthest from the longitudinal axis of the tube 2, in order to be able to easily exit the final piece 1 tooling.
- the number of parts assembled to form the die 6 may be greater than two.
- the second punch 5 is provided with an outer cylindrical sleeve 19 concentric with the punch 5.
- the cylindrical sleeve 19 is fixed around the second punch 5, and thus forms, with the central portion thereof, an annular recess 20 in which the half-worked part 15 flows during the reverse spinning to form the tubular portion 2 of the rod 1 train.
- another advantage of the cylindrical sleeve 19 is to be able to guide more effectively the second punch 5 when moving inside the die 6, since the outer diameter of this sleeve is as for the first punch 4, adjusted to the inner bore 12 of the die 6.
- the rod 1 has a shape different from that of the example of Figures 1 to 6, which explains that in Figures 7 to 1 1, the joint plane 18 is regular.
- the die 6 of the tooling is heated before the placing of the billet 1 1, and / or can be kept hot during the setting shaped, for example by an induction heating system, outside the tooling or integrated tooling.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Forging (AREA)
- Extrusion Of Metal (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2013154586/02A RU2013154586A (ru) | 2011-05-10 | 2012-05-04 | Способ горячего выдавливания для изготовления металлической детали, оснастка для его выполнения и изготовленный таким способом стержень |
CA2834410A CA2834410C (fr) | 2011-05-10 | 2012-05-04 | Procede de filage a chaud pour realiser une piece metallique, outil de filage pour sa mise en oeuvre et tige de train d'atterrissage ainsi realisee |
BR112013028807A BR112013028807A2 (pt) | 2011-05-10 | 2012-05-04 | processo de extrusão a quente, ferramenta de extrusão e haste de trem de pouso |
JP2014509689A JP2014514167A (ja) | 2011-05-10 | 2012-05-04 | 金属部品を作製するための熱間押出し法、この方法を実施するための押出し工具、及びこの方法によって作製されたランディングギアロッド |
EP12720477.4A EP2707157A1 (fr) | 2011-05-10 | 2012-05-04 | Procédé de filage à chaud pour réaliser une pièce métallique, outil de filage pour sa mise en oeuvre et tige de train d'atterrissage ainsi réalisée |
MX2013013101A MX2013013101A (es) | 2011-05-10 | 2012-05-04 | Proceso de extrusion en caliente para producir una pieza de metal, herramienta para su aplicacion y la varilla del tren de aterrizaje asi producida. |
CN201280022485.3A CN103596707B (zh) | 2011-05-10 | 2012-05-04 | 制造金属零件的挤压方法、实施该方法的挤压工具和由此制造的起落架杆 |
US13/825,119 US20140053623A1 (en) | 2011-05-10 | 2012-05-04 | Hot extrusion method for producing a metal part, extrusion tool for implementation it and landing gear rod thus produced |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1154020A FR2975030B1 (fr) | 2011-05-10 | 2011-05-10 | Procede de filage a chaud pour realiser une piece metallique, outil de filage pour sa mise en oeuvre et tige de train d'atterrissage ainsi realisee. |
FR1154020 | 2011-05-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012152687A1 true WO2012152687A1 (fr) | 2012-11-15 |
Family
ID=46062269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2012/058235 WO2012152687A1 (fr) | 2011-05-10 | 2012-05-04 | Procédé de filage à chaud pour réaliser une pièce métallique, outil de filage pour sa mise en oeuvre et tige de train d'atterrissage ainsi réalisée |
Country Status (11)
Country | Link |
---|---|
US (1) | US20140053623A1 (fr) |
EP (1) | EP2707157A1 (fr) |
JP (1) | JP2014514167A (fr) |
CN (1) | CN103596707B (fr) |
BR (1) | BR112013028807A2 (fr) |
CA (1) | CA2834410C (fr) |
FR (1) | FR2975030B1 (fr) |
MX (1) | MX2013013101A (fr) |
RU (1) | RU2013154586A (fr) |
TW (1) | TW201304934A (fr) |
WO (1) | WO2012152687A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104841708A (zh) * | 2014-02-17 | 2015-08-19 | 苏州昆仑重型装备制造有限公司 | 端部带扁头的筒体工件挤压成型工艺 |
WO2019141798A1 (fr) * | 2018-01-22 | 2019-07-25 | Aubert & Duval | Procédé de fabrication d'une pièce creuse en un matériau métallique et utilisation de ce procédé pour fabriquer une tige ou un balancier de train d'atterrissage |
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2011
- 2011-05-10 FR FR1154020A patent/FR2975030B1/fr active Active
-
2012
- 2012-05-04 JP JP2014509689A patent/JP2014514167A/ja active Pending
- 2012-05-04 US US13/825,119 patent/US20140053623A1/en not_active Abandoned
- 2012-05-04 EP EP12720477.4A patent/EP2707157A1/fr not_active Withdrawn
- 2012-05-04 MX MX2013013101A patent/MX2013013101A/es unknown
- 2012-05-04 CA CA2834410A patent/CA2834410C/fr active Active
- 2012-05-04 BR BR112013028807A patent/BR112013028807A2/pt not_active Application Discontinuation
- 2012-05-04 RU RU2013154586/02A patent/RU2013154586A/ru not_active Application Discontinuation
- 2012-05-04 CN CN201280022485.3A patent/CN103596707B/zh active Active
- 2012-05-04 WO PCT/EP2012/058235 patent/WO2012152687A1/fr active Application Filing
- 2012-05-09 TW TW101116486A patent/TW201304934A/zh unknown
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FR1573666A (fr) | 1967-07-21 | 1969-07-04 | ||
DE1929147A1 (de) | 1969-06-09 | 1970-12-23 | Rheinstahl Siegener Eisenbahnb | Verfahren zur Herstellung von Zugtoepfen fuer Mittelpufferkupplungsfederpatronen |
GB1459641A (en) | 1973-03-12 | 1976-12-22 | Caterpillar Tractor Co | Cold-formed hydraulic cylinder and method of making |
US20060016077A1 (en) | 2004-07-26 | 2006-01-26 | Liu Chang F | Method for forging/molding a coarse blank of an aluminum transmission shaft |
US20060016237A1 (en) | 2004-07-26 | 2006-01-26 | Liu Chang F | Method for forging /molding a coarse blank of an oil cylinder |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104841708A (zh) * | 2014-02-17 | 2015-08-19 | 苏州昆仑重型装备制造有限公司 | 端部带扁头的筒体工件挤压成型工艺 |
WO2019141798A1 (fr) * | 2018-01-22 | 2019-07-25 | Aubert & Duval | Procédé de fabrication d'une pièce creuse en un matériau métallique et utilisation de ce procédé pour fabriquer une tige ou un balancier de train d'atterrissage |
FR3077016A1 (fr) * | 2018-01-22 | 2019-07-26 | Aubert & Duval | Procede de fabrication d'une piece creuse en un materiau metallique et utilisation de ce procede pour fabriquer une tige ou un balancier de train d'atterrissage |
Also Published As
Publication number | Publication date |
---|---|
BR112013028807A2 (pt) | 2017-01-31 |
JP2014514167A (ja) | 2014-06-19 |
US20140053623A1 (en) | 2014-02-27 |
RU2013154586A (ru) | 2015-06-20 |
EP2707157A1 (fr) | 2014-03-19 |
FR2975030A1 (fr) | 2012-11-16 |
FR2975030B1 (fr) | 2014-06-13 |
CA2834410C (fr) | 2019-06-18 |
CN103596707B (zh) | 2016-08-17 |
MX2013013101A (es) | 2013-12-16 |
CA2834410A1 (fr) | 2012-11-15 |
CN103596707A (zh) | 2014-02-19 |
TW201304934A (zh) | 2013-02-01 |
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