WO2010149462A1 - Procédé de production d'un rotor de turbine pour un turbocompresseur avec détermination d'un axe de déséquilibre et rectification cylindrique; turbocompresseur à ergot de soudage rectifié cylindriquement - Google Patents

Procédé de production d'un rotor de turbine pour un turbocompresseur avec détermination d'un axe de déséquilibre et rectification cylindrique; turbocompresseur à ergot de soudage rectifié cylindriquement Download PDF

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Publication number
WO2010149462A1
WO2010149462A1 PCT/EP2010/057357 EP2010057357W WO2010149462A1 WO 2010149462 A1 WO2010149462 A1 WO 2010149462A1 EP 2010057357 W EP2010057357 W EP 2010057357W WO 2010149462 A1 WO2010149462 A1 WO 2010149462A1
Authority
WO
WIPO (PCT)
Prior art keywords
turbine
turbocharger
turbine wheel
welding
axis
Prior art date
Application number
PCT/EP2010/057357
Other languages
German (de)
English (en)
Inventor
Ralf Böning
Bruno Ferling
Dirk Frankenstein
Holger Fäth
Original Assignee
Continental Automotive Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2010149462A1 publication Critical patent/WO2010149462A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/129—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding specially adapted for particular articles or workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00—Electron-beam welding or cutting
    • B23K15/0046—Welding
    • B23K15/0093—Welding characterised by the properties of the materials to be welded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
    • B24B5/22—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work for grinding cylindrical surfaces, e.g. on bolts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/026—Shaft to shaft connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/027—Arrangements for balancing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/30—Compensating imbalance
    • G01M1/34—Compensating imbalance by removing material from the body to be tested, e.g. from the tread of tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/001—Turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers

Definitions

  • the present invention relates to a method of manufacturing a turbine runner for a turbocharger.
  • the invention further relates to a turbocharger with such a turbine runner.
  • DE 10 2007 018 618 A1 describes the generally known construction of an exhaust gas turbocharger for an internal combustion engine of a motor vehicle, which essentially comprises a radial turbine with a turbine wheel, which is driven by the exhaust gas flow of the internal combustion engine, and a radial compressor arranged in the intake tract of the internal combustion engine with a compressor wheel, which is rotatably connected by a turbocharger shaft with the turbine wheel exists.
  • Such turbochargers are generally used to increase the performance of internal combustion engines.
  • the turbine wheel of an exhaust gas turbocharger is usually produced by means of a metal casting process.
  • Turbinenrad- Rohteil usually has a more or less large imbalance.
  • To compensate for this imbalance a complex balancing operation is required, which is typically performed on the finished turbine runner.
  • a turbine runner the arrangement consisting of the turbine wheel and the corresponding turbocharger shaft is referred to below.
  • Such turbine runners are made according to a well-known method as follows:
  • the turbine wheel blank is centered over its geometrical axis of rotation and a welding pin rising from the turbine wheel back is ground round coaxially with the geometric axis of rotation of the turbine wheel.
  • the turbocharger shaft is welded, for example via a rotary friction welding method or an electron beam welding method, coaxially with the axis of rotation of the turbine wheel.
  • the outer contour of the turbine rotor coaxial with the axis of rotation of the turbine wheel or the turbine rotor can be ground.
  • this axis of rotation is usually not identical to the balancing axis of the turbine rotor. This can lead to strong vibrations in modern, very high-speed turbochargers with speeds of up to 300,000 rpm. As a result, it usually comes to disturbing, unwanted noise developments.
  • the storage of the turbine rotor can be generated by the
  • Vibrations are heavily loaded, which significantly reduces their life. For the reasons mentioned, an exact balancing of the usually existing, more or less strong unbalance is absolutely necessary or at least desirable.
  • a balancing pin is provided on the one hand on the hub of the turbine wheel.
  • the Turbinenra encompasses the Turbinenrad- Rohteils on an increased material thickness, which can be reduced as required to compensate for the imbalance.
  • the object of the present invention is to improve a turbocharger or its turbine rotor, in particular.
  • a method for producing a turbine rotor of a turbocharger comprising the steps of: providing a turbine wheel, which has a welding pin for material connection to a rotor shaft and a turbine blading for converting kinetic energy of exhaust gas into rotational energy, wherein the Turbine blading and the welding pin are arranged on opposite end faces of the turbine wheel; Determining an unbalance axis of the turbine wheel; and cylindrical grinding of the welding pin, wherein the cylindrical grinding takes place coaxially to the detected unbalance axis.
  • a turbocharger in particular for a motor vehicle, which has a turbine runner, which is produced by means of a method according to the invention.
  • the turbine wheel has a welding pin and a turbine blading.
  • the welding pin and the turbine blading are arranged on opposite end faces of the turbine wheel.
  • the turbine wheel with the welding pin and the turbine blading is designed as a solid one-piece component.
  • the welding pin serves for the material connection with the rotor shaft.
  • the turbine wheel also has an imbalance and as a result an unbalance axis.
  • the idea underlying the present invention is, inter alia, first to determine the unbalance axis of the turbine wheel and then round the welding pin coaxial with the determined unbalance axis.
  • the particular advantage consists in the fact that no balancing operation must be performed on the finished turbine rotor, since the unbalance axis of the turbine wheel serves as a rotation axis of the turbine rotor. This means that no additional material such as a balancing pin or a reinforced Turbinenraadd must be provided on the turbine wheel, which would have to be removed specifically to compensate for an imbalance as in a turbine wheel, which is balanced to its geometric axis of rotation is required.
  • a welding of the welding pin to the rotor shaft is carried out, whereby preferably electron beam welding or rotational friction welding is carried out, whereby it is advantageously possible to rapidly transfer different materials of the rotor shaft and the turbine wheel and reliable connect.
  • a welding of the welding pin to the rotor shaft is carried out, whereby preferably electron beam welding or rotational friction welding is carried out, whereby it is advantageously possible to rapidly transfer different materials of the rotor shaft and the turbine wheel and reliable connect.
  • welding is performed after cylindrical grinding of the welding stud. This makes it possible to separate the work step of the cylindrical grinding of the welding pin from the welding operation. As a result, the production time of the turbine rotor can be advantageously reduced by, for example, the cylindrical grinding of the welding pin is performed by a supplier.
  • the rotor shaft is coaxial with the unbalance axis of the turbine wheel with the welding pin welded.
  • the welded turbine rotor advantageously runs around the unbalance axis of the turbine wheel, which ensures a vibration-free and therefore quiet and bearing-friendly run of the turbine rotor.
  • a cylindrical grinding of an outer contour of the turbine blading is provided, wherein the cylindrical grinding takes place coaxially with the rotor shaft welded to the turbine wheel. This ensures a round run of the outer contour of the turbine blading, whereby the turbine wheel runs with a uniformly formed gap between the turbine wheel and the turbine housing. As a result, an optimal utilization of the supplied exhaust gas flow is possible, thereby increasing the efficiency of the turbocharger.
  • the turbine wheel and the rotor shaft at least partially and preferably completely different materials. This makes it possible to meet the very different requirements for the turbine wheel, which is exposed to very high temperatures and very high centrifugal forces, and to the rotor shaft, which has to absorb a high alternating bending load. This advantageously increases the service life of the turbine rotor and thus the service life of a turbocharger with a turbine rotor according to the invention.
  • the turbocharger has a turbine housing, a turbine wheel arranged in the turbine housing, a compressor housing, a compressor wheel arranged in the compressor housing, and a rotor shaft which connects the turbine wheel with the turbine wheel Compressor wheel rotatably connects.
  • FIG. 1A-B is a schematic view of an embodiment of the method according to the invention.
  • 2A-B is a schematic view of a development of the method according to the invention.
  • Fig. 3 is a schematic view of an internal combustion engine with a turbocharger with a turbine rotor produced by a method according to the invention.
  • FIG. 1 shows a schematic view of an embodiment of the method according to the invention.
  • FIG. 1A initially shows a turbine wheel 3 with a welding pin 4 and a turbine blading 6
  • Welding pin 4 and the turbine blading 6 are arranged on opposite end faces of the turbine wheel 3.
  • the turbine wheel 3 with the welding pin 4 and the turbine blading 6 is designed as a solid, one-piece and preferably as an integral component, for example as a cast component.
  • the welding pin 4 is designed as a rotationally symmetrical to a geometric axis of rotation 12 of the turbine wheel 3 trained paragraph.
  • the turbine wheel 3 also has an imbalance 13 in the form of a mass accumulation. The size of this mass accumulation usually ranges in the range of a few milligrams.
  • This mass accumulation for example, by a structural inhomogeneity, which is caused by a production of the turbine wheel 3 in a casting process, can be caused. Due to the imbalance 13, the turbine wheel 3 an unbalance axis 7, which is not identical to the geometric axis 12.
  • the imbalance axis 7 typically deviates by a few 1/100 mm from the geometric axis 12.
  • the unbalance axis 7 of the turbine wheel 3 resulting from the imbalance 13 is first determined.
  • the turbine wheel 3 is clamped, for example, in a, not shown in FIG. 1, feather-soft clamping and set in rotation about the geometric axis of rotation 12. Due to the existing unbalance 13 and the feathery clamping the actual axis of rotation of the turbine wheel 3 moves away from its geometric axis of rotation 12 toward the unbalance axis 7.
  • the imbalance axis 7 automatically adjusts itself in the feathery clamping , By measuring the clamping or the welding pin 4, the unbalance axis 7 can now be determined comfortably.
  • the turbine wheel 3 is rotated in a fixed clamping, which is also not shown in FIG. 1, about the previously determined unbalance axis 7 in rotation and the welding pin 4 is ground coaxially with the unbalance axis 7 round.
  • the cylindrical grinding preferably takes place by means of a shaping disk, which gives the welding pin 4 its intended final shape.
  • the welding pin 4 can also be ground round directly in the above-described spring-soft clamping.
  • the spring-soft clamping is frozen, so that the welding pin 4 can be ground in the frozen clamping coaxial with the unbalance axis 7 round.
  • FIG. 1B shows the turbine wheel 3 with the welding pin 4 ground round to the imbalance axis 7.
  • the balancing of the turbine wheel 3 is done according to the invention therefore not known from the prior art by the removal of additional balancing masses until the imbalance about the geometric axis of rotation 12 is balanced, but in that the unbalance axis 7 serves as a rotation axis of the turbine wheel. According to the invention therefore no additional balancing masses on the turbine wheel 3 are required.
  • FIG. 2 shows a schematic view of a development of the method according to the invention.
  • FIG. 2A firstly shows the turbine wheel 3 with the unbalanced axis 7 and with the welding pin 4 ground coaxially with the imbalance axis 7. Furthermore, FIG. 2A shows a rotor shaft 5. The turbine wheel 3 is now clamped. The rotor shaft 5 is moved to the welding pin 4 of the turbine wheel 3 in the direction of the unbalance axis 7 to 14 and welded to the welding pin 4. Alternatively, the rotor shaft 5 can be firmly clamped and the turbine wheel 3 to be moved to the rotor shaft 5 or both components are moved towards each other.
  • Rotary friction welding or electron beam welding are preferably used as the welding method. As an alternative to this, any other welding method which is suitable for connecting different materials to one another can also be used.
  • a welding bead emerging during the welding of the welding pin 4 and the rotor shaft 5 is preferably removed by a cylindrical grinding with a shaping disk.
  • the outer contour 8 of the turbine wheel 3 is rotationally symmetrical to the geometric axis of rotation 12, resulting in a rotation of the turbine rotor 1 about the unbalance axis 7, a certain rash of the outer contour 8 of the turbine wheel 3.
  • the outer contour 8 of the turbine wheel 3 is ground round in a concluding process step coaxial with the unbalance axis 7.
  • FIG. 3 shows a schematic view of an internal combustion engine with a turbocharger having a turbine rotor manufactured according to a method according to the invention.
  • An internal combustion engine 16 is fluidically coupled via an exhaust pipe 17 with the turbine wheel 3 located in a turbine housing 9.
  • the turbine wheel 3 is rotatably connected via the rotor shaft 5 with a compressor 11.
  • the compressor wheel 11 is arranged in a compressor housing 10.
  • the compressor 11 is fluidly coupled via an intake manifold 18 to the engine 16.
  • the internal combustion engine 16 During operation of the internal combustion engine 16 with the turbocharger 2, the internal combustion engine 16 provides exhaust gas to the turbine wheel 3 via the exhaust gas line 17. By the turbine wheel 3, the enthalpy of the exhaust gas is lowered and the kinetic and thermal energy of the exhaust gas is converted into rotational energy. The rotational energy is transmitted to the compressor wheel 11 via the rotor shaft 5 of the turbine rotor. The compressor 11 sucks in fresh air, compresses it and supplies the compressed fresh air via the intake manifold 18 to the engine 16. The fact that more oxygen is present in the compressed air volume per unit volume, can be more in the engine 16 per unit air volume
  • the rotor shaft 5 is welded to the welding pin 4 coaxially to the geometric axis of rotation 12 of the turbine wheel 3 before determining the imbalance axis 7.
  • An unbalance axis is then determined for the finished welded turbine rotor 1.
  • the listed materials, numbers and dimensions are to be understood as exemplary and are merely illustrative of the embodiments and further developments of the present invention.
  • the specified turbine rotor and turbocharger with turbine rotor can be used particularly advantageously in the automotive sector and here preferably in passenger vehicles, for example in diesel or gasoline engines, but can also be used in any other turbocharger applications if required.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Supercharger (AREA)

Abstract

L'invention concerne un procédé de production d'un rotor de turbine pour un turbocompresseur, en particulier dans ou pour un véhicule automobile. Le procédé selon l'invention comprend les étapes suivantes : mise à disposition d'une roue de turbine (3) qui présente un ergot de soudage (4) pour l'assemblage par liaison de matière avec un arbre de rotor et un aubage de turbine (6) afin de convertir l'énergie cinétique des gaz d'échappement en énergie de rotation, l'aubage de turbine (6) et l'ergot de soudage (4) étant placés sur des surfaces frontales opposées de la roue de turbine (3); détermination d'un axe de déséquilibre (7) de la roue de turbine (3); rectification cylindrique de l'ergot de soudage (4), cette rectification cylindrique se faisant coaxialement à l'axe de déséquilibre (7) constaté. L'invention concerne en outre un turbocompresseur.
PCT/EP2010/057357 2009-06-22 2010-05-27 Procédé de production d'un rotor de turbine pour un turbocompresseur avec détermination d'un axe de déséquilibre et rectification cylindrique; turbocompresseur à ergot de soudage rectifié cylindriquement WO2010149462A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009029878.9 2009-06-22
DE102009029878A DE102009029878A1 (de) 2009-06-22 2009-06-22 Verfahren zum Herstellen eines Turbinenläufers für einen Turbolader und Turbolader

Publications (1)

Publication Number Publication Date
WO2010149462A1 true WO2010149462A1 (fr) 2010-12-29

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PCT/EP2010/057357 WO2010149462A1 (fr) 2009-06-22 2010-05-27 Procédé de production d'un rotor de turbine pour un turbocompresseur avec détermination d'un axe de déséquilibre et rectification cylindrique; turbocompresseur à ergot de soudage rectifié cylindriquement

Country Status (2)

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DE (1) DE102009029878A1 (fr)
WO (1) WO2010149462A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR688732A (fr) * 1929-01-28 1930-08-28 Cincinnati Grinders Inc Perfectionnements aux machines à rectifier sans centres
US1787337A (en) * 1929-01-28 1930-12-30 Cincinnati Grinders Inc Grinding machine
JPS59218286A (ja) * 1983-05-25 1984-12-08 Aisin Seiki Co Ltd タ−ボチヤ−ジヤ用ロ−タの溶接方法
JPH02252903A (ja) * 1989-10-07 1990-10-11 Ngk Insulators Ltd セラミックローターのバランス修正方法
US6321522B1 (en) * 1999-03-09 2001-11-27 W. Schalfhorst Ag & Co. Spinning rotor for open-end spinning machine and method for producing the spinning rotor
EP1541717A2 (fr) * 2003-11-22 2005-06-15 DaimlerChrysler AG Procédé de fabrication de composants en métaux légers recouverts qui sont disposés dans un courant de fluide turbulent
DE102006016099A1 (de) * 2006-04-04 2007-10-18 Benteler Stahl/Rohr Gmbh Verfahren zur Herstellung einer Getriebehohlwelle und Getriebehohlwelle
WO2010036425A2 (fr) * 2008-06-19 2010-04-01 Borgwarner Inc. Arbre rotor d’une turbomachine et procédé de production d’un rotor d'une turbomachine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007018618A1 (de) 2006-04-19 2007-10-25 Borgwarner Inc., Auburn Hills Turbolader

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR688732A (fr) * 1929-01-28 1930-08-28 Cincinnati Grinders Inc Perfectionnements aux machines à rectifier sans centres
US1787337A (en) * 1929-01-28 1930-12-30 Cincinnati Grinders Inc Grinding machine
JPS59218286A (ja) * 1983-05-25 1984-12-08 Aisin Seiki Co Ltd タ−ボチヤ−ジヤ用ロ−タの溶接方法
JPH02252903A (ja) * 1989-10-07 1990-10-11 Ngk Insulators Ltd セラミックローターのバランス修正方法
US6321522B1 (en) * 1999-03-09 2001-11-27 W. Schalfhorst Ag & Co. Spinning rotor for open-end spinning machine and method for producing the spinning rotor
EP1541717A2 (fr) * 2003-11-22 2005-06-15 DaimlerChrysler AG Procédé de fabrication de composants en métaux légers recouverts qui sont disposés dans un courant de fluide turbulent
DE102006016099A1 (de) * 2006-04-04 2007-10-18 Benteler Stahl/Rohr Gmbh Verfahren zur Herstellung einer Getriebehohlwelle und Getriebehohlwelle
WO2010036425A2 (fr) * 2008-06-19 2010-04-01 Borgwarner Inc. Arbre rotor d’une turbomachine et procédé de production d’un rotor d'une turbomachine

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Publication number Publication date
DE102009029878A1 (de) 2010-12-30

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