EP2042248A1 - Device for circular forming of a revolution piece, in particular a turbomachine exhaust case - Google Patents
Device for circular forming of a revolution piece, in particular a turbomachine exhaust case Download PDFInfo
- Publication number
- EP2042248A1 EP2042248A1 EP08165031A EP08165031A EP2042248A1 EP 2042248 A1 EP2042248 A1 EP 2042248A1 EP 08165031 A EP08165031 A EP 08165031A EP 08165031 A EP08165031 A EP 08165031A EP 2042248 A1 EP2042248 A1 EP 2042248A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- revolution
- rollers
- turntable
- shaping device
- conformation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007493 shaping process Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 239000000523 sample Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 10
- 238000003466 welding Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/14—Recontouring
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/4932—Turbomachine making
Definitions
- the invention relates to a device for circular conformation of a part of revolution, in particular an exhaust casing of a turbomachine.
- Turbomachine exhaust casings are large-diameter parts made of nickel-based alloy by mechanical welding.
- the operations of welding the casing generate multiple deformations. This is why it is necessary to put the casing back to the round, that is to say, to restore a circular shape before continuing construction.
- the axes X1 and Y1 on the one hand, X2 and Y2 on the other hand are coaxial.
- rollers are mounted on force actuators (or cylinder) and they exert a stress on the housing. Cylinders of the same unit exert efforts in opposite directions.
- the shaping device of a revolution piece of the invention makes it possible to put the piece to the round quickly avoiding the hours of work required according to the prior art.
- the lower unit and the upper unit further comprise means for measuring the circularity and the diameter of the part of revolution.
- These means consist, for example, of a probe and a resistive linear displacement sensor.
- the senor is connected to an analog acquisition card of a digital control.
- the rollers of the upper unit are mounted on a beam pivotally mounted relative to a frame of the device between a first position in which the rollers are disengaged from the part of revolution and a second position in which the rollers are engaged on the piece of revolution.
- the locking means of the part of revolution on the plate consist of three quarter-turn flanges and three locking jacks.
- a control cycle of the part is carried out after its rounding.
- a touch-up cycle is performed if the inspection cycle revealed that the part was out of tolerance.
- the general reference 2 designates a static frame and fixed to the ground.
- a lower unit, designated by the general reference 4 is mounted on a lower step 6 of the frame 2.
- An upper unit, designated by the general reference 8, is mounted on an upper step 10 of the frame 2.
- a turntable 12 is mounted on an intermediate step 14 of the frame 2.
- the turntable 12 supports a part of revolution, a turbojet exhaust casing in the example shown.
- the housing comprises a central hub 18 and arm portions 20 connected to the central hub 18.
- the central hub and the arms 20 are made in one piece by molding.
- a ferrule 22 connected to the arm 20 by arm members 24 constitutes a mechanically welded part of the exhaust casing. As a result of the welding operations, the ferrule 22 undergoes multiple deformations.
- a numerical control is provided near the frame 2.
- This numerical control is conventionally presented as a computer connected to the circular conformation device by a series of interfaces, for example by a PLC and power relays. Its function is the display of information and the control of the conformation device according to a program introduced in advance.
- the means for clamping the exhaust casing on the turntable 12 consist on the one hand by three quarter-turn flanges 26 and by three clamping jacks 28 arranged at 120 ° from each other.
- the quarter-turn flanges 26 are raised pneumatically and then pivoted by a quarter of a turn in order to clamp the exhaust casing 16 on the turntable 12.
- the quarter-turn flanges and the external clamping cylinders are controlled in position by sensors. mechanical limit switches.
- the clamping pressure is controlled by two pressure switches ensuring that the pressures are maintained. All position information is communicated to the numerical control.
- the turntable is rotated by means of a motor 30 whose maximum speed is for example 600 revolutions / minute.
- the motor 30 is connected to a 1:10 reducer which is itself connected to a 1:12 reducer. In this way, the maximum speed of rotation of the plate is 5 revolutions per minute.
- Two rollers 32 are mounted on a support 34 which moves in translation along an axis X1.
- the displacement of the support 34 is controlled by a gear motor 36 which drives a ball screw.
- the diameter of the ball screw is 32 millimeters and its pitch is 5 millimeters.
- an inner roller 38 moves in translation along an axis Y1.
- the inner roller 38 is mounted on a support 40 whose displacement is controlled by a gear motor group 42.
- the gear motor 42 causes the carrier 40 to move by means of a ball screw.
- the diameter of the ball screw is 32 millimeters and its pitch is 5 millimeters.
- the assembly makes it possible to adjust the displacement of the rollers with an accuracy of 1 micrometer.
- the axes X1 and Y1 are coaxial.
- the upper unit 8 comprises a support 44 on which a beam 46 is pivotally mounted. A jack 47 acts on the beam 46 to rotate it.
- the upper unit 8 has a first axis X2 and a second axis Y2. In the example, these two axes are coaxial.
- Two outer rollers 48 (partially visible on the figure 4 ) are movable in translation in the direction X2 under the action of a motor driving a ball screw (not visible in the figure).
- an inner roller 50 (partially visible on the figure 4 ) is movable in translation along the axis Y2. It is driven by a gear motor 52 acting on a ball screw.
- the rollers 48 and 50 are moved via the tilt cylinder 48 between a first position in which they are disengaged from the part of revolution and a second position in which they are engaged on the part of revolution.
- a measurement unit 60 forming part of the lower unit 4.
- This measurement unit comprises a pneumatic cylinder of positioning 62.
- This jack ensures the support of a roller 64 integral with the rod of the cylinder 66 on the outer periphery of the piece of revolution.
- the measurement unit 60 measures the circularity and the diameter of the part.
- a measurement sensor is connected to the digital control.
- the sensor consists of a probe and a resistive linear displacement sensor. The latter is connected to an analog acquisition board of the numerical control.
- a comparator 68 allows manual control and adjustment of the unit.
- the unit of measurement 70 forming part of the upper unit 8.
- This unit is identical, in principle, to the measurement unit 60 described with reference to FIG. figure 5 . It comprises a pneumatic cylinder 72 whose rod 74 is secured to a support 76 on which is mounted the measurement sensor 78.
- the sensor 78 consists of a probe 80 and a resistive displacement sensor. The latter is connected to a digital control acquisition board.
- a comparator 82 allows manual control and adjustment of the unit.
- This ferrule 22 has a lower portion 22a and an upper portion 22b that is to return to the round.
- it establishes in a first step (optional) a map of the deformation of the ends 22a and 22b of the shell 22.
- the numerical control contains an algorithm that calculates, as a function of the deformation, how much it is necessary to deform the casing to put it in a circular shape, taking into account the elasticity of the metal.
- the numerical control places the rollers in the desired position thanks to the electric gear motor and the ball screws which allow to move them in translation along the axes X1, Y1, X2 and Y2, as explained above, the rotation of the turntable continuing.
- the rollers in the desired position thanks to the electric gear motor and the ball screws which allow to move them in translation along the axes X1, Y1, X2 and Y2, as explained above, the rotation of the turntable continuing.
- Diagrammatically by the arrow 84 the direction of rotation of the part.
- the deformation Before conformation of the part the deformation is 5 millimeters maximum. After conformation it is about five tenths of a millimeter.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Jigs For Machine Tools (AREA)
Abstract
Description
L'invention concerne un dispositif de conformation circulaire d'une pièce de révolution, notamment un carter d'échappement d'une turbomachine.The invention relates to a device for circular conformation of a part of revolution, in particular an exhaust casing of a turbomachine.
Les carters d'échappement de turbomachine, particulièrement des turboréacteurs, sont des pièces de grand diamètre réalisées en alliage à base nickel par mécano soudage. Les opérations de soudage du carter engendrent de multiples déformations. C'est pourquoi il est nécessaire de remettre le carter au rond, c'est-à-dire de lui restituer une forme circulaire avant de poursuivre la construction.Turbomachine exhaust casings, particularly turbojet engines, are large-diameter parts made of nickel-based alloy by mechanical welding. The operations of welding the casing generate multiple deformations. This is why it is necessary to put the casing back to the round, that is to say, to restore a circular shape before continuing construction.
Actuellement, ces opérations de mise au rond sont effectuées en chaudronnerie manuelle à l'aide d'un marteau. Cette technique fastidieuse demande une main d'oeuvre qualifiée, nécessite de nombreuses heures de travail, génère du bruit et provoque des traumatismes musculo squelettiques qui engendrent des arrêts de travail.Currently, these rounding operations are performed in manual boiler making using a hammer. This tedious technique requires a skilled workforce, requires many hours of work, generates noise and causes musculoskeletal trauma that cause work stoppages.
L'invention a précisément pour objet un dispositif et un procédé qui remédient à ces inconvénients. Ces buts sont atteints, conformément à l'invention, par le fait que le dispositif de conformation comporte :
- une unité inférieure comportant deux galets de conformation montés mobiles suivant un axe X1 et un galet de conformation monté mobile suivant un axe Y1 ;
- une unité supérieure comportant deux galets de conformation montés mobiles suivant un axe X2 et un galet de conformation monté mobile suivant un axe Y2 ;
- un plateau tournant disposé entre l'unité inférieure et l'unité supérieure ;
- des moyens de blocage de la pièce de révolution sur le plateau tournant.
- a lower unit comprising two conformation rollers mounted movable along an axis X1 and a shaping roll mounted movably along an axis Y1;
- an upper unit comprising two conformation rollers movable along an axis X2 and a shaping roll mounted movably along an axis Y2;
- a turntable disposed between the lower unit and the upper unit;
- means for locking the piece of revolution on the turntable.
Avantageusement, les axes X1 et Y1 d'une part, X2 et Y2 d'autre part sont coaxiaux.Advantageously, the axes X1 and Y1 on the one hand, X2 and Y2 on the other hand are coaxial.
Les galets sont montés sur des actionneurs de force (ou vérin) et ils exercent une contrainte sur le carter. Les vérins d'une même unité exercent des efforts de sens contraire.The rollers are mounted on force actuators (or cylinder) and they exert a stress on the housing. Cylinders of the same unit exert efforts in opposite directions.
Grâce à ces caractéristiques le dispositif de conformation d'une pièce de révolution de l'invention permet de mettre la pièce au rond rapidement en évitant les heures de travail nécessaires selon la technique antérieure.Thanks to these features the shaping device of a revolution piece of the invention makes it possible to put the piece to the round quickly avoiding the hours of work required according to the prior art.
Avantageusement l'unité inférieure et l'unité supérieure comportent en outre des moyens de mesure de la circularité et du diamètre de la pièce de révolution.Advantageously, the lower unit and the upper unit further comprise means for measuring the circularity and the diameter of the part of revolution.
Ces moyens sont constitués, par exemple, d'un palpeur et d'un capteur à déplacement en linéaire résistif.These means consist, for example, of a probe and a resistive linear displacement sensor.
De préférence, le capteur est relié à une carte d'acquisition analogique d'une commande numérique.Preferably, the sensor is connected to an analog acquisition card of a digital control.
Dans une réalisation particulière, les galets de l'unité supérieure sont montés sur une poutre montée pivotante par rapport à un bâti du dispositif entre une première position dans laquelle les galets sont dégagés de la pièce de révolution et une seconde position dans laquelle les galets sont engagés sur la pièce de révolution.In a particular embodiment, the rollers of the upper unit are mounted on a beam pivotally mounted relative to a frame of the device between a first position in which the rollers are disengaged from the part of revolution and a second position in which the rollers are engaged on the piece of revolution.
Avantageusement les moyens de blocage de la pièce de révolution sur le plateau sont constitués par trois brides quart de tour et par trois vérins de blocage.Advantageously, the locking means of the part of revolution on the plate consist of three quarter-turn flanges and three locking jacks.
L'invention concerne par ailleurs un procédé de conformation circulaire d'une pièce de révolution, notamment d'un carter d'échappement de turboréacteur d'avion. Selon ce procédé :
- un opérateur dispose la pièce à conformer sur un plateau tournant ;
- l'opérateur enclenche le cycle de travail
- une commande numérique bride la pièce sur le plateau tournant ;
- la commande numérique met la rotation le plateau tournant ;
- la commande numérique mesure le diamètre moyen de la pièce ainsi que les écarts de circularité maximum et minimum ;
- la commande numérique détermine la position des galets de conformation en fonction du diamètre moyen de la pièce ;
- la commande numérique place les galets à la position déterminée tout en poursuivant la rotation du plateau tournant.
- an operator arranges the part to be conformed on a turntable;
- the operator starts the work cycle
- a numerical control clamps the workpiece on the turntable;
- the numerical control turns the turntable;
- the numerical control measures the average diameter of the piece as well as the maximum and minimum circularity deviations;
- the numerical control determines the position of the conformation rollers as a function of the average diameter of the workpiece;
- the numerical control places the rollers at the determined position while continuing the rotation of the turntable.
On réalise un cycle de contrôle de la pièce après sa mise au rond.A control cycle of the part is carried out after its rounding.
On réalise un cycle de retouche, si le cycle de contrôle a révélé que la pièce était hors tolérances.A touch-up cycle is performed if the inspection cycle revealed that the part was out of tolerance.
D'autres caractéristiques et avantages de l'invention apparaîtront encore à la lecture de la description qui suit d'un exemple de réalisation donné à titre illustratif en référence aux figures annexées. Sur ces figures :
- la
figure 1 est une vue d'ensemble en perspective d'un dispositif de conformation conforme à la présente invention ; - la
figure 2 est une vue en perspective du plateau tournant et des moyens de bridage ; - la
figure 3 est une vue en perspective de l'unité inférieure du dispositif de conformation représenté sur lafigure 1 ; - la
figure 4 est une vue en perspective de l'unité supérieure du dispositif de conformation circulaire de l'invention représentée sur lafigure 1 ; - la
figure 5 est une vue en perspective d'une unité de mesure faisant partie de l'unité inférieure ; - la
figure 6 est une vue en perspective d'une unité de mesure faisant partie de l'unité supérieure représentée sur lafigure 7 . - la
figure 7 est une vue schématique en coupe à travers un carter d'échappement d'une turbomachine ; - la
figure 8 est une vue schématique montrant la position des galets extérieurs et du galet intérieur.
- the
figure 1 is an overall perspective view of a shaping device according to the present invention; - the
figure 2 is a perspective view of the turntable and clamping means; - the
figure 3 is a perspective view of the lower unit of the shaping device shown in FIG.figure 1 ; - the
figure 4 is a perspective view of the upper unit of the circular shaping device of the invention shown in FIG.figure 1 ; - the
figure 5 is a perspective view of a unit of measurement forming part of the lower unit; - the
figure 6 is a perspective view of a unit of measurement forming part of the upper unit shown on thefigure 7 . - the
figure 7 is a schematic sectional view through an exhaust casing of a turbomachine; - the
figure 8 is a schematic view showing the position of the outer rollers and the inner roller.
Sur la
On a représenté sur la
Le plateau tournant est entraîné en rotation par l'intermédiaire d'un moteur 30 dont la vitesse de rotation maximale est par exemple de 600 tours/minute. Le moteur 30 est raccordé à un réducteur 1:10 qui est lui-même raccordé à un réducteur 1:12. De la sorte, la vitesse de rotation maximale du plateau est de 5 tours par minute.The turntable is rotated by means of a
On a représenté sur la
On a représenté sur la
On a représenté sur la
On a représenté sur la
De même la manière que pour l'unité de mesure 60, un comparateur 82 permet un contrôle et un réglage manuel de l'unité.Similarly, the way for the
On a explicité sur les
Avant conformation de la pièce la déformation est 5 millimètres maximum. Après conformation elle est de cinq dixièmes de millimètres environ.Before conformation of the part the deformation is 5 millimeters maximum. After conformation it is about five tenths of a millimeter.
Claims (12)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0757917A FR2921572B1 (en) | 2007-09-28 | 2007-09-28 | DEVICE FOR CIRCULAR CONFORMATION OF A REVOLUTION PART, IN PARTICULAR AN EXHAUST CASE OF A TURBOMACHINE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2042248A1 true EP2042248A1 (en) | 2009-04-01 |
EP2042248B1 EP2042248B1 (en) | 2011-06-29 |
Family
ID=39402808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08165031A Active EP2042248B1 (en) | 2007-09-28 | 2008-09-24 | Device for circular forming of a revolution piece, in particular a turbomachine exhaust case |
Country Status (5)
Country | Link |
---|---|
US (1) | US8161785B2 (en) |
EP (1) | EP2042248B1 (en) |
CA (1) | CA2639865C (en) |
FR (1) | FR2921572B1 (en) |
RU (1) | RU2483821C2 (en) |
Cited By (4)
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---|---|---|---|---|
CN105107888A (en) * | 2015-08-17 | 2015-12-02 | 安润集团安徽中润重工有限公司 | Sliding type external corrector for three-way air duct |
CN105945095A (en) * | 2016-05-30 | 2016-09-21 | 广州市正坚包装材料科技有限公司 | Disc shaping machine and shaping method thereof |
CN110666042A (en) * | 2018-04-28 | 2020-01-10 | 刘小龙 | Combined multifunctional mould capable of changing into any required plane shape |
CN112170551A (en) * | 2020-09-08 | 2021-01-05 | 上海瑞晨环保科技股份有限公司 | Automatic shaping mechanism for front disc of large fan impeller |
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KR101165531B1 (en) * | 2010-08-27 | 2012-07-16 | 하나로테크 주식회사 | Swing ring plate manufacturing device and method using it |
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JPH07178459A (en) | 1993-12-24 | 1995-07-18 | Nissan Motor Co Ltd | Method for relieving stress of rim for road wheel |
US5634361A (en) | 1994-05-24 | 1997-06-03 | Advanced Machine Systems | Apparatus and method for straightening damaged or bent wheels |
US20040035164A1 (en) * | 2002-08-23 | 2004-02-26 | Wheels Technology Inc. | Apparatus for straightening a damaged or deformed wheel |
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JPH0319908A (en) | 1989-06-15 | 1991-01-29 | Toray Ind Inc | Fiber having modified cross-section |
JPH0929375A (en) * | 1995-07-20 | 1997-02-04 | Mazda Motor Corp | Method and device for roll forming |
DE29817979U1 (en) * | 1998-10-08 | 1999-01-14 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co Kg, 48324 Sendenhorst | Tool for producing an externally toothed gear part |
EP0998997A1 (en) * | 1998-11-06 | 2000-05-10 | Spiro Machines S.A. | Flanging and seam folding apparatus and method for flanging and closing seams |
-
2007
- 2007-09-28 FR FR0757917A patent/FR2921572B1/en not_active Expired - Fee Related
-
2008
- 2008-09-24 EP EP08165031A patent/EP2042248B1/en active Active
- 2008-09-26 CA CA2639865A patent/CA2639865C/en active Active
- 2008-09-26 RU RU2008138454/02A patent/RU2483821C2/en active
- 2008-09-26 US US12/238,947 patent/US8161785B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0319908U (en) * | 1989-07-05 | 1991-02-27 | ||
JPH07178459A (en) | 1993-12-24 | 1995-07-18 | Nissan Motor Co Ltd | Method for relieving stress of rim for road wheel |
US5634361A (en) | 1994-05-24 | 1997-06-03 | Advanced Machine Systems | Apparatus and method for straightening damaged or bent wheels |
US20040035164A1 (en) * | 2002-08-23 | 2004-02-26 | Wheels Technology Inc. | Apparatus for straightening a damaged or deformed wheel |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105107888A (en) * | 2015-08-17 | 2015-12-02 | 安润集团安徽中润重工有限公司 | Sliding type external corrector for three-way air duct |
CN105107888B (en) * | 2015-08-17 | 2017-05-03 | 安润集团安徽中润重工有限公司 | Sliding type external corrector for three-way air duct |
CN105945095A (en) * | 2016-05-30 | 2016-09-21 | 广州市正坚包装材料科技有限公司 | Disc shaping machine and shaping method thereof |
CN110666042A (en) * | 2018-04-28 | 2020-01-10 | 刘小龙 | Combined multifunctional mould capable of changing into any required plane shape |
CN112170551A (en) * | 2020-09-08 | 2021-01-05 | 上海瑞晨环保科技股份有限公司 | Automatic shaping mechanism for front disc of large fan impeller |
Also Published As
Publication number | Publication date |
---|---|
EP2042248B1 (en) | 2011-06-29 |
FR2921572A1 (en) | 2009-04-03 |
RU2008138454A (en) | 2010-04-10 |
US20090084150A1 (en) | 2009-04-02 |
CA2639865A1 (en) | 2009-03-28 |
RU2483821C2 (en) | 2013-06-10 |
CA2639865C (en) | 2015-12-29 |
FR2921572B1 (en) | 2009-12-11 |
US8161785B2 (en) | 2012-04-24 |
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