EP3237145A1 - Machine de meulage et procédé d'usinage d'un bord de frottement d'une aube - Google Patents

Machine de meulage et procédé d'usinage d'un bord de frottement d'une aube

Info

Publication number
EP3237145A1
EP3237145A1 EP16713349.5A EP16713349A EP3237145A1 EP 3237145 A1 EP3237145 A1 EP 3237145A1 EP 16713349 A EP16713349 A EP 16713349A EP 3237145 A1 EP3237145 A1 EP 3237145A1
Authority
EP
European Patent Office
Prior art keywords
grinding
grinding machine
workpiece
unit
blade
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.)
Pending
Application number
EP16713349.5A
Other languages
German (de)
English (en)
Inventor
Julian Philip HEIDERICH
Karsten SCHÄFFER
Stefan Sellmann
Marat Visajtaev
Felix Vogt
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.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP3237145A1 publication Critical patent/EP3237145A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/16—Machines or devices using grinding or polishing belts; Accessories therefor for grinding other surfaces of particular shape
    • B24B21/165—Machines or devices using grinding or polishing belts; Accessories therefor for grinding other surfaces of particular shape for vanes or blades of turbines, propellers, impellers, compressors and the like
    • 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/14—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding turbine blades, propeller blades or the like
    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B24B21/12—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving a contact wheel or roller pressing the belt against the work
    • 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
    • B23Q2210/00—Machine tools incorporating a specific component
    • B23Q2210/006—Curved guiding rails

Definitions

  • the present invention relates to a grinding machine for processing a rubbing edge of a rotor blade, comprising a grinding unit with a driven grinding tool, a workpiece receiving device, which is adapted to receive a blade to be ground, and a workpiece drive unit, which is designed to the workpiece ⁇ receiving device with a blade received on it for the purpose of machining the squeal edge to move relative to the grinding tool. Furthermore, the invention relates to a method for processing a rubbing edge of a running shoe, in particular using it
  • Blades such as are used in particular in gas turbines, are exposed to extreme conditions during operation, which is accompanied by a high degree of wear, which is caused in particular ⁇ sondere by oxidation. Accordingly, it is necessary to replace worn blades regularly as part of a gas turbine overhaul against new or outdated blades. Shovel the newly to be running must be adapted to any construction site individually to the handene before ⁇ gas turbine. In this case, the length of the blade is reduced at the squealer in order to adjust the Ab ⁇ stand between the squealer edge of the blade and the gas turbine housing such that during operation of the gas turbine smallest possible gap a ⁇ provides to minimize unwanted gap losses.
  • a grinding tool a workpiece holder adapted to receive a blade to be ground, and a workpiece drive unit adapted to to move the workpiece holder with a blade received thereon for the purpose of machining the Anstreif ⁇ edge relative to the grinding tool.
  • the workpiece drive unit and the associated control of such grinding machines are designed such that they allow Kreisinterpo ⁇ lation, which is required to the complex geometry of a squealer be able to produce Kegelmantelab ⁇ section in shape.
  • the present invention provides a grinding machine of the type mentioned above, which is characterized in that the workpiece drive unit has a pivot axis on which the Maschinenzhoufacteinrich- device is held such that the squeal edge of a recorded on this blade in a pivoting movement of the Workpiece receiving device is brought about the pivot axis with the grinding tool in engagement. Thanks to such a swivel axis, the sanding edges of moving blades without complex CNC-controlled circular interpolation can easily be combined with a very simple structure
  • the grinding machine simulates the actual mounting ⁇ situ ation of a rotor blade, wherein the Werk Swissfacteinrich- tung the wheel disc, the pivot axis of the Radusionncard ⁇ axis and the grinding tool, the gas turbine housing repre sented ⁇ .
  • the abrasive tool is a cylindrically formed in Wesentli ⁇ chen grindstone is driven to rotate about its longitudinal axis.
  • Such a belt sander is advantageous in that the sanding belt is relatively inexpensive and can be replaced quickly and easily.
  • a longitudinal axis of the grindstone or a longitudinal axis of the Kon ⁇ take roller is arranged at least in a longitudinal axis basic position parallel to the pivot axis of the workpiece drive unit.
  • a longitudinal axis basic position squeal edges can be produced with an outer diameter that is constant in the axial direction.
  • a pivoting device is advantageously provided, on which the grinding unit is housed pivotable for pitching the longitudinal axis of the grinding stone or ⁇ the longitudinal axis of the contact roller with respect to a longitudinal axis basic position, wherein the pivot axis of the workpiece driving unit and the
  • Pivot axis of the pivoting unit are preferably arranged perpendicular zuein other ⁇ .
  • squealer edges can also be produced with an outer diameter that is conical in the axial direction.
  • a vertically extending linear guide is provided, along which the grinding unit is movable up and down. Accordingly, in this embodiment of the grinding machine according to the invention, the feed movement is realized via a movement of the grinding unit along the linear guide.
  • suction head of a suction unit in the region of the grinding unit to remove accumulated during the grinding processing Bear ⁇ grinding dust.
  • the pivot axis of the workpiece drive unit is stationary. outsourced. In this way, a very simple structure he ⁇ aims.
  • An externally accessible machine cabin is advantageously provided in which the grinding unit and the Maschinen Swissauf ⁇ acquisition means are arranged. Such a machine cabin serves for the safety of the operating personnel. For ande ren ⁇ preventing the pollution of the environment by accumulating or not sucked abrasive dust.
  • the machine cabin has a ceiling plate on which the workpiece drive unit is arranged.
  • a very simple and inexpensive to manufacture structure of the grinding machine is achieved.
  • the grinding machine is designed to be transportable in its entirety, so that it can be easily spent on any construction site to be carried out at the inspection work on gas turbines.
  • the grinding machine can be provided with eyelets or the like, which serve for fastening crane straps.
  • the grinding machine can also have a base plate, which is designed such that it can be grasped by a forklift fork.
  • ⁇ constricting invention further provides a method of processing a tip squealer of a rotor blade, in particular using a grinding machine according to the invention, in which the tip squealer of a blade as part of a Schwenkbewe ⁇ supply of the blade to an objective pivot axis a grinding tool is engaged.
  • the contact edge in the context of the pivoting movement is preferably so with the
  • FIG. 1 Therein is a perspective view of a grinding machine according to an embodiment of the present invention; a front view of the grinding machine shown in Figure 1;
  • Figure 3 is a top perspective view of the upper part of the grinding machine shown in Figure 1, showing a workpiece drive unit;
  • Figure 4 is an enlarged view of a grinding unit and a workpiece receiving device of the grinding machine shown in Figure 1;
  • Figure 5 is presented a perspective view of Darge in Figure 4 ⁇ and arranged on a swiveling milling unit.
  • the figures show a grinding machine 1 according to an embodiment of the present invention, which serves for processing a squealer edge 2 of a rotor blade 3.
  • the grinding machine 1 comprises a main component
  • Grinding unit 4 having a driven grinding tool 5, a workpiece holder 6 adapted to receive a moving blade 3 to be ground, and a workpiece driving unit 7 adapted to receive the workpiece receiving means 6 with a pick-up thereon
  • the grinding unit 4 is designed as a belt sander. As a grinding tool 5, it comprises a grinding belt, which is guided over a contact roller 8 and over two deflection rollers 9 and 10 and can be driven in a known manner via a drive (not shown).
  • a carriage 11 of the grinding unit 4 is movably and lockable on parallel arranged and circular ring segment-shaped guide rails 12 and 13 of a pivoting device 14 received, so that the grinding unit 4 can be pivoted in its entirety about a pivot axis 15.
  • a longitudinal axis 16 of the contact roller 8 starting from a longitudinal axis basic position, in which the longitudinal axis 16 extends horizontally, are employed in the context of a pivoting movement about the pivot axis 15 as needed.
  • the Ver ⁇ pivoting device 14 is up to a vertically extending linear guide 17 up and down and held locked in any position. This allows the grinding unit 4 in any pivot positions move up and down.
  • In the area of the contact roller 8 is a ⁇ From suction head 18 to a suction unit arranged ⁇ not shown in detail, the width of the suction head 18 in the Wesentli ⁇ chen the width of the grinding tool 5 corresponds.
  • Linear guide 17 are arranged in a machine cabin 19. This includes a cabin floor 20, side walls 21, a transition to ⁇ door 22, a ceiling plate 23 and a canopy 24 which is releasably for covering the ceiling plate 24 at this befes- Untitled. Above the grinding unit 4 is within the
  • the workpiece holder 6 positi ⁇ oned.
  • the workpiece holder 6 comprises a
  • Clamping device 25 which is designed for receiving and clamping a blade root 26 of the rotor blade 3.
  • the tensioning device 25 is fixedly connected to a pivot axis 28 of the workpiece drive unit 7 via an intermediate piece 27, which extends through an opening of the cover plate 24, which is connected to the outside of the ceiling plate 23 of the machine cabin 19 is arranged and stored.
  • the pivot axis 28 of the work ⁇ piece drive unit 7 extends parallel to the longitudinal ⁇ axis 16 of the contact roller 8, if this is in its longitudinal ⁇ axis basic position, and perpendicular to the pivot axis 15 of the pivoting device 14.
  • the pivot axis 28 via a toothed belt 29 with a Drive 30 which is also attached to the outside of the ceiling plate 23, so that the clamping device 25 with a blade 3 held thereon about the drive 30 pivotally about the pivot axis 28 relative to the contact roller 8 of the grinding unit 4 to move back and forth ,
  • the grinding machine 1 is designed to be transportable in its entirety.
  • metal tubes 31 are attached to the cabin floor 20 with a rectangular cross-section, the sizes and distances are chosen such that in this a forklift fork
  • the grinding machine 1 can take and also transport by a forklift on ⁇ .
  • the blade 3 For machining a squealer edge 2 of a blade 3, the blade 3 is mounted in a first step in the clamping ⁇ device 25 of the workpiece holder 6. Subsequently, a desired adjustment of the contact roller 8 of the grinding unit 4 is set by the grinding unit 4 is pivoted about the pivot axis 15 of the pivoting device 14. In a further step, the Spannein ⁇ direction 25 is pivoted with the blades 3 held thereon from the vertical position, as shown in Figure 2. Subsequently, the grinding unit 4 is moved vertically along the linear guide 17 to adjust in this way the desired delivery.
  • the grinding tool 5 of the grinding unit 4 is driven, whereupon the tensioning device 19 with the blade held thereon 3 is pivoted about the pivot axis 28 of the workpiece drive unit 7 using the drive 30.
  • the squealer edge 2 of the blade 3 is guided over the grinding tool 5, so that a material removal takes place.
  • the squealer edge 2 is given the shape of a cone shell section. The chips produced during the machining process are sucked off via the suction head 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

L'invention concerne une machine de meulage (1) servant à l'usinage d'un bord de frottement (2) d'une aube (3), comprenant une unité de meulage (4) munie d'un outil de meulage entraîné (5), un dispositif de logement de pièce (6) configuré pour loger une aube à meuler (3), et une unité d'entraînement de pièce (7) conçue pour déplacer par rapport à l'outil de meulage (5) le dispositif de logement de pièce (6) sur lequel est logée une aube (3) pour l'usinage par enlèvement de matière du bord de frottement (2). L'unité d'entraînement de pièce (5) présente un axe de pivotement (28) au niveau duquel le dispositif de logement de pièce (6) est maintenu de telle manière que le bord de frottement (2) d'une aube (3) logée sur ledit dispositif est mis en prise avec l'outil de meulage (5) sous l'effet d'un mouvement de pivotement du dispositif de logement de pièce (6) autour de l'axe de pivotement (28). L'invention concerne en outre un procédé servant à l'usinage d'un bord de frottement (2) d'une aube (3), notamment en utilisant une machine de meulage (1) selon l'invention.
EP16713349.5A 2015-03-27 2016-03-21 Machine de meulage et procédé d'usinage d'un bord de frottement d'une aube Pending EP3237145A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015205624.4A DE102015205624A1 (de) 2015-03-27 2015-03-27 Schleifmaschine sowie Verfahren zum Bearbeiten einer Anstreifkante einer Laufschaufel
PCT/EP2016/056095 WO2016156080A1 (fr) 2015-03-27 2016-03-21 Machine de meulage et procédé d'usinage d'un bord de frottement d'une aube

Publications (1)

Publication Number Publication Date
EP3237145A1 true EP3237145A1 (fr) 2017-11-01

Family

ID=55646552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16713349.5A Pending EP3237145A1 (fr) 2015-03-27 2016-03-21 Machine de meulage et procédé d'usinage d'un bord de frottement d'une aube

Country Status (5)

Country Link
US (1) US10518379B2 (fr)
EP (1) EP3237145A1 (fr)
KR (1) KR102072551B1 (fr)
DE (1) DE102015205624A1 (fr)
WO (1) WO2016156080A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111496633B (zh) * 2019-01-30 2021-12-10 宁波方太厨具有限公司 一种覆膜薄板双面去毛刺设备
CN115338745B (zh) * 2022-08-08 2023-11-17 国网浙江省电力有限公司江山市供电公司 一种水利发电用设备打磨装置及打磨方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309848A (en) * 1980-02-25 1982-01-12 United Technologies Corporation Turbine blade tip finishing apparatus
DE3625565A1 (de) * 1986-07-29 1988-03-03 Hauni Werke Koerber & Co Kg Verfahren zum schleifen gekruemmter flaechen an werkstuecken
ES2114778B1 (es) * 1994-10-18 1999-01-16 Danobat Perfeccionamientos en rectificadoras de alta velocidad para alabes de rotores de motores de reaccion y similares.
DE202004000104U1 (de) * 2004-01-06 2004-04-29 Multi-Tool A/S Bandschleifmaschine, vorzugsweise für die Kombination mit einem Vorsatzgerät für das Ausschleifen von Rohrenden
PT2865487T (pt) * 2013-10-24 2016-11-02 Siemens Ag Método e dispositivo para encurtar as lâminas móveis de uma turbomáquina

Also Published As

Publication number Publication date
KR102072551B1 (ko) 2020-02-25
DE102015205624A1 (de) 2016-09-29
WO2016156080A1 (fr) 2016-10-06
KR20170131561A (ko) 2017-11-29
US10518379B2 (en) 2019-12-31
US20180050435A1 (en) 2018-02-22

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