WO2013114024A1 - Optimisation des points d'appui des echasses d'aubes dans un procede d'usinage de ces aubes. - Google Patents

Optimisation des points d'appui des echasses d'aubes dans un procede d'usinage de ces aubes. Download PDF

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Publication number
WO2013114024A1
WO2013114024A1 PCT/FR2013/050146 FR2013050146W WO2013114024A1 WO 2013114024 A1 WO2013114024 A1 WO 2013114024A1 FR 2013050146 W FR2013050146 W FR 2013050146W WO 2013114024 A1 WO2013114024 A1 WO 2013114024A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
machining
vanes
points
stilt
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.)
Ceased
Application number
PCT/FR2013/050146
Other languages
English (en)
French (fr)
Inventor
Michael HANSOM
Huu-Thanh Tran
Christian Bariaud
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Aircraft Engines SAS
Original Assignee
SNECMA SAS
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47714435&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2013114024(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SNECMA SAS filed Critical SNECMA SAS
Priority to BR112014018185A priority Critical patent/BR112014018185A8/pt
Priority to RU2014135523A priority patent/RU2626908C2/ru
Priority to EP13704197.6A priority patent/EP2809887B2/fr
Priority to US14/373,817 priority patent/US20140369844A1/en
Priority to CA2861078A priority patent/CA2861078A1/fr
Priority to CN201380007650.2A priority patent/CN104093940B/zh
Publication of WO2013114024A1 publication Critical patent/WO2013114024A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
    • B23Q3/063—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding turbine blades
    • 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
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/02—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from one piece
    • 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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/005—Sealing means between non relatively rotating elements
    • F01D11/006—Sealing the gap between rotor blades or blades and rotor
    • F01D11/008—Sealing the gap between rotor blades or blades and rotor by spacer elements between the blades, e.g. independent interblade platforms
    • 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
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/10—Manufacture by removing material
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • F05D2230/68—Assembly methods using auxiliary equipment for lifting or holding
    • 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
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/306—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the suction side of a rotor blade
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
    • 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
    • Y10T29/49336—Blade making

Definitions

  • the present invention relates to the general field of gas turbines for aircraft engines or helicopters and more particularly relates to a blade manufacturing process for minimizing stress and its mass during its machining.
  • the blades are particularly complex parts whose manufacture according to a long and expensive foundry process proves tricky, in particular because of the manufacturing tolerances required.
  • a casting because of dimensional tolerances of the order of a millimeter and its surface condition is rarely a directly usable part. It must therefore at least partly be machined (typically on a CNC machining center), which requires the use of a geometric reference specific to this machining.
  • This positioning system must also respect the principle of isostatism, that is to say, it must allow to position unambiguously the room in space, usually at 6 points of support judiciously distributed, so especially to maximize the distance between them.
  • the main purpose of the present invention is thus to overcome such drawbacks by proposing a blade machining method which makes it possible to significantly reduce the concentrations of mechanical stresses while ensuring a gain in mass.
  • a machining process in a three-dimensional machining center of a blade comprising an aerodynamic blade, a platform under the upstream and downstream parts of which are formed supports for a sealing liner, a foot blade and a stilt interposed between said platform and said blade root, characterized in that said supports also constitute two points of support for a positioning system at 6 points of said blade in said three-dimensional machining center.
  • This combination of the support and fulcrum function makes it possible by limiting the mechanical stress concentrations on the blade to simplify the machining range and to obtain in addition the desired mass gain.
  • said support points are formed on the extrados side of said stilt.
  • the invention also relates to a blade obtained from this method and a turbomachine comprising a plurality of blades as above.
  • the single figure shows in elevation a turbine engine blade, for example a fan, a turbine or a compressor, fixed in a known manner on the periphery of a turbomachine rotor disk (not shown) and typically comprising a separate platform 12.
  • a blade root 16 in the shape of fir or tail to round housed in a groove or corresponding cell (not shown) of the periphery of the rotor disc.
  • the stilt 14 has a reduced thickness relative to the blade root 16 to cross the opening defined by the groove and allow the mechanical connection between the foot and the aerodynamic portion (or blade 18) of the blade.
  • Under the platform are conventionally arranged, respectively upstream and downstream (with respect to the flow of air passing through the blades), supports 12A, 12B for a sealing jacket 20.
  • reference faces which will be the starting faces for the dimensioning of the part and the points of support which will serve as a point of reference for this machining and for the subsequent control of the room.
  • these support points distributed around the workpiece are six in number and are part of a positioning system in 6 points for machining the workpiece in a three-dimensional machining center.
  • the lateral face of the stilt 14 on the extrados side is chosen as the reference face and the upstream and downstream supports of the sealing sleeve are also used as bearing points 22A, 22B for the positioning system at 6 points of the dawn in the three-dimensional machining center, the other four points of support being distributed on the other faces of the blade.
  • these two support points are relatively close to the edge of the stilt maximizing the spacing between them.
  • the stress concentrations resulting from the abundance of low value shelving already present at the foot of the supports of the sealing liner 20 are thus not increased because of the combination of these shelves with those resulting from the supports and the overall mass of the lining. dawn is further reduced by the coincidence of the support and support functions combined at these two points.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
PCT/FR2013/050146 2012-02-02 2013-01-24 Optimisation des points d'appui des echasses d'aubes dans un procede d'usinage de ces aubes. Ceased WO2013114024A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BR112014018185A BR112014018185A8 (pt) 2012-02-02 2013-01-24 Otimização dos pontos de apoio das colunas de pás em um processo de usinagem dessas pás
RU2014135523A RU2626908C2 (ru) 2012-02-02 2013-01-24 Способ механической обработки лопатки и газотурбинный двигатель
EP13704197.6A EP2809887B2 (fr) 2012-02-02 2013-01-24 Procede d'usinage d'une aube de turbomachine
US14/373,817 US20140369844A1 (en) 2012-02-02 2013-01-24 Optimisation of the bearing points of the stilts of vanes in a method for machining said vanes
CA2861078A CA2861078A1 (fr) 2012-02-02 2013-01-24 Optimisation des points d'appui des echasses d'aubes dans un procede d'usinage de ces aubes
CN201380007650.2A CN104093940B (zh) 2012-02-02 2013-01-24 在三维加工中心中加工叶片的方法以及涡轮发动机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1251000A FR2986557B1 (fr) 2012-02-02 2012-02-02 Optimisation des points d'appui des echasses d'aubes mobiles dans un procede d'usinage de ces aubes
FR1251000 2012-02-02

Publications (1)

Publication Number Publication Date
WO2013114024A1 true WO2013114024A1 (fr) 2013-08-08

Family

ID=47714435

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2013/050146 Ceased WO2013114024A1 (fr) 2012-02-02 2013-01-24 Optimisation des points d'appui des echasses d'aubes dans un procede d'usinage de ces aubes.

Country Status (8)

Country Link
US (1) US20140369844A1 (https=)
EP (1) EP2809887B2 (https=)
CN (1) CN104093940B (https=)
BR (1) BR112014018185A8 (https=)
CA (1) CA2861078A1 (https=)
FR (1) FR2986557B1 (https=)
RU (1) RU2626908C2 (https=)
WO (1) WO2013114024A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2645633C1 (ru) * 2017-02-14 2018-02-26 Публичное акционерное общество "Научно-производственное объединение "Сатурн" Способ обработки хвостовика и корневой части пера лопатки на многокоординатном станке с чпу

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014160641A1 (en) * 2013-03-25 2014-10-02 United Technologies Corporation Rotor blade with l-shaped feather seal
US9797270B2 (en) * 2013-12-23 2017-10-24 Rolls-Royce North American Technologies Inc. Recessable damper for turbine
CN108876852B (zh) * 2017-05-09 2021-06-22 中国科学院沈阳自动化研究所 一种基于3d视觉的在线实时物体识别定位方法
EP3438410B1 (en) 2017-08-01 2021-09-29 General Electric Company Sealing system for a rotary machine
US10934874B2 (en) 2019-02-06 2021-03-02 Pratt & Whitney Canada Corp. Assembly of blade and seal for blade pocket

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0851096A2 (en) * 1996-12-24 1998-07-01 United Technologies Corporation Turbine blade platform seal
EP1170648A1 (en) * 2000-05-01 2002-01-09 General Electric Company Method for machining a workpiece
US7214034B2 (en) * 2002-05-30 2007-05-08 Snecma Moteurs Control of leak zone under blade platform
FR2956996A1 (fr) * 2010-03-05 2011-09-09 Snecma Dispositif de maintien d'une aube par sa pale lors de l'usinage de son pied

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
US2540774A (en) * 1947-12-31 1951-02-06 Jones & Lamson Mach Co Holding fixture
SU850340A1 (ru) * 1979-11-29 1981-07-30 Предприятие П/Я М-5671 Устройство дл распределени припускаНА зАгОТОВКЕ лОпАТКи и зАлиВКи EE лЕгКО-плАВКиМ МАТЕРиАлОМ B бРиКЕТ
US6068541A (en) * 1997-12-22 2000-05-30 United Technologies Corporation Method for using a fixture enabling more accurate machining of a part
JP4254352B2 (ja) * 2003-06-04 2009-04-15 株式会社Ｉｈｉ タービンブレード
US7080434B2 (en) * 2003-06-06 2006-07-25 General Electric Company Fixture having integrated datum locators
EP1557535A1 (de) * 2004-01-20 2005-07-27 Siemens Aktiengesellschaft Turbinenschaufel und Gasturbine mit einer solchen Turbinenschaufel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0851096A2 (en) * 1996-12-24 1998-07-01 United Technologies Corporation Turbine blade platform seal
EP1170648A1 (en) * 2000-05-01 2002-01-09 General Electric Company Method for machining a workpiece
US7214034B2 (en) * 2002-05-30 2007-05-08 Snecma Moteurs Control of leak zone under blade platform
FR2956996A1 (fr) * 2010-03-05 2011-09-09 Snecma Dispositif de maintien d'une aube par sa pale lors de l'usinage de son pied

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2645633C1 (ru) * 2017-02-14 2018-02-26 Публичное акционерное общество "Научно-производственное объединение "Сатурн" Способ обработки хвостовика и корневой части пера лопатки на многокоординатном станке с чпу

Also Published As

Publication number Publication date
BR112014018185A2 (https=) 2017-06-20
CA2861078A1 (fr) 2013-08-08
FR2986557A1 (fr) 2013-08-09
CN104093940B (zh) 2016-06-22
EP2809887A1 (fr) 2014-12-10
CN104093940A (zh) 2014-10-08
RU2626908C2 (ru) 2017-08-02
US20140369844A1 (en) 2014-12-18
EP2809887B1 (fr) 2016-09-28
RU2014135523A (ru) 2016-03-27
FR2986557B1 (fr) 2015-09-25
EP2809887B2 (fr) 2019-09-18
BR112014018185A8 (pt) 2017-07-11

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