EP1808269B1 - Holding device for a turbine blade - Google Patents

Holding device for a turbine blade Download PDF

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Publication number
EP1808269B1
EP1808269B1 EP20060000954 EP06000954A EP1808269B1 EP 1808269 B1 EP1808269 B1 EP 1808269B1 EP 20060000954 EP20060000954 EP 20060000954 EP 06000954 A EP06000954 A EP 06000954A EP 1808269 B1 EP1808269 B1 EP 1808269B1
Authority
EP
European Patent Office
Prior art keywords
housing
positioning
holding device
positioning elements
turbine 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.)
Not-in-force
Application number
EP20060000954
Other languages
German (de)
French (fr)
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EP1808269A1 (en
Inventor
Francis-Jurjen Dr. Ladru
Ralf Motzkus
Helge Reymann
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 AG
Original Assignee
Siemens AG
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Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP20060000954 priority Critical patent/EP1808269B1/en
Priority to DE200650001543 priority patent/DE502006001543D1/en
Publication of EP1808269A1 publication Critical patent/EP1808269A1/en
Application granted granted Critical
Publication of EP1808269B1 publication Critical patent/EP1808269B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/14—Clamps for work of special profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/003—Combinations of clamps

Definitions

  • the present invention relates to a holder for fixing a turbine blade in a coating apparatus, with a housing having an opening through which the blade root of the turbine blade is inserted into the housing such that the turbine blade with its adjoining the blade root, to be coated airfoil protruding from the housing, wherein in the housing positioning and / or clamping devices are provided to position the blade root inserted into the housing and to fix in the positioned position.
  • Highly stressed workpieces such as guide vanes and rotor blades for gas turbines are coated to improve their temperature and / or abrasion resistance with suitable metals, metal alloys or ceramics.
  • the coating can be carried out by means of different thermal coating methods. Examples of such processes are atmospheric plasma spraying (APS) and high-speed flame spraying (HVOF) (cf. Ullmanns Encyclopedia of Industrial Chemistry, 2003, vol. 21, pp. 573 and 575 ).
  • the holder has a housing with an opening through which the turbine blade is inserted with its blade root in the housing; so that it protrudes with the blade to be coated from the opening of the housing.
  • the blade root is aligned and fixed in the housing by means of corresponding positioning elements and clamping devices.
  • a problem here is that due to manufacturing tolerances, wear and thermal distortion during operation, the position of the turbine blade fixed in the holder is not precisely defined and can vary in particular from holder to holder. These individual deviations of the component position, which increase due to angular errors with increasing distance from the clamping point, can lead to an undesirable, uneven distribution of the layer properties and in particular of the layer thickness, if, during the coating process, the coating robot is moved relative to the holders on a programmed path.
  • the present invention is therefore based on the object to provide a holder of the type mentioned, with which a highly accurate component positioning is possible.
  • the positioning elements and / or the clamping devices have positioning bolts, which can be adjustably screwed into the housing bottom and / or into the side walls of the housing and secured at the desired position, for example by means of counter-screws.
  • the positioning elements may have mounting and / or abutment surfaces which are adapted to the contour of the blade roots to be positioned.
  • the positioning elements and / or the tensioning device are adjustably held in longitudinal slots of the housing bottom and / or the housing walls, wherein the positioning in this case may be wedge-shaped, that by a longitudinal displacement of the positioning of the distance its up or contact surface of the corresponding housing or the housing bottom can be adjusted.
  • a first embodiment of a holder according to the invention is provided to fix a turbine blade in, for example, a thermal coating device.
  • the holder has a substantially cuboidal housing 1 with a housing bottom 2, which carries on its underside a housing foot 3 for attachment to the coating device, two housing end walls 4 and two housing side walls 5.
  • the top of the housing 1 is open and defines a limited opening. 7 , by which the blade root of a turbine blade to be clamped can be inserted into the housing 1.
  • a total of seven positioning elements 8 are provided in the two housing end walls 4, the housing side walls 5 and the housing bottom 2, which serve to position a blade inserted into the housing 1 and fix it.
  • the positioning elements 8 each have a positioning pin 9, which passes through an opening in the respective housing wall 2, 4, 5 and on both sides of the housing wall 2, 4, 5 each carries a nut 6, via which the positioning bolt 9 can be fixed to the housing 1.
  • the positioning bolts 9 form on their protruding into the housing 1 end surfaces each up or contact surfaces 10 to position a blade inserted into the housing 1 in the housing 1 and fix.
  • the blade root is supported on its underside by the bearing surfaces 10 of the two provided in the housing base 2 positioning 8, while the positioning elements 8, which are provided in the housing end walls 4 and the housing side walls 5, the blade root endally and laterally supported.
  • the position of the contact surfaces 10 and the positioning elements 8 can be changed by the positioning pins 9 are adjusted in their longitudinal direction.
  • only the nuts 9a need to be loosened and tightened again after positioning.
  • FIGS. 5 to 8 a second embodiment of a holder according to the invention is shown.
  • This has the same basic structure as the first embodiment with an approximately cuboidal housing 1, which has on its upper side an opening 7 through which the blade root of a turbine blade can be inserted into the housing 1.
  • a housing side wall 5 can be additionally solved so that the blade root can also be inserted from the side into the housing 1.
  • the detachable housing side wall 5 is with the opposite housing side wall 5 clamped by a clamping bolt 11.
  • the clamping bolt 11 is inserted in the transverse direction through the housing 1 and carries at the protruding ends depending on a nut 12th
  • the positioning of a blade root inserted into the housing 1 takes place in this embodiment by four positioning elements 8, which are provided on the housing bottom 2.
  • a pair of positioning elements 8, which are provided in the region of the higher housing end wall 4, formed in the same manner as the positioning elements 8 of the first embodiment as positioning 9, which define a support surface 10 on its upper side and on the housing bottom 2 by means of two nuts. 6 are fixed adjustable.
  • the measures provided for in the lower housing end wall 4 two positioning elements 8 also have positioning bolts 9 which are adjustably mounted by nuts 6 on the housing bottom 2.
  • the support surfaces 10 are formed here on discrete support elements 13, which are attached to the protruding into the housing 1 end portions of the positioning bolts 9.
  • the support surfaces 10 of the support elements 13 are adapted to the shape of the blade root to be positioned, so that they support the blade root not only from the bottom, but also laterally.
  • FIGS. 9 to 11 a third embodiment of a holder according to the invention is shown.
  • the housing 1 of this holder is formed here in a similar manner as the housing 1 of the second embodiment and has a cuboidal basic shape, wherein the one housing end wall 4 is formed higher than the other housing end wall 4, so that the opening edge is inclined.
  • a housing side wall 5 is detachably provided by the housing and clamped by two clamping bolts 11, each with two nuts 12 with the opposite side wall 5 of the housing.
  • two positioning elements 8 are provided, which are formed in the same manner as the positioning elements 8 of the first embodiment as positioning 9, which define a support surface 10 on its upper side and are fixed adjustable on the housing end wall 4 by means of two nuts 6.
  • the support surfaces 10 are here formed on wedge elements 15, so that by a longitudinal adjustment of the wedge elements 15 in the longitudinal slots 14, the height of the support surface 10 is variable at a predetermined support position.
  • the positioning elements 8 are adjustable in the holders according to the invention, individual position deviations of the turbine blade clamped in the holders with respect to a robot path can be reduced.
  • the adjustment of the positioning of a holder can be done by a marked pattern component, which is inserted into the holder, as well as fixed reference points, which can be determined for example via a fixed frame or a coordinate measuring machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Description

Die vorliegende Erfindung betrifft eine Halterung zur Fixierung einer Turbinenschaufel in einer Beschichtungsvorrichtung, mit einem Gehäuse, das eine Öffnung aufweist, durch welche der Schaufelfuß der Turbinenschaufel derart in das Gehäuse einsetzbar ist, dass die Turbinenschaufel mit ihrem sich an den Schaufelfuß anschließenden, zu beschichtenden Schaufelblatt aus dem Gehäuse herausragt, wobei in dem Gehäuse Positionierelemente und/oder Spanneinrichtungen vorgesehen sind, um den in das Gehäuse eingesetzten Schaufelfuß zu positionieren und in der positionierten Lage zu fixieren.The present invention relates to a holder for fixing a turbine blade in a coating apparatus, with a housing having an opening through which the blade root of the turbine blade is inserted into the housing such that the turbine blade with its adjoining the blade root, to be coated airfoil protruding from the housing, wherein in the housing positioning and / or clamping devices are provided to position the blade root inserted into the housing and to fix in the positioned position.

Die Druckschrift US 5 026 032 offenbart eine Halterung gemäß dem Oberbegriff des unabhängigen Anspruchs 1.The publication US 5 026 032 discloses a holder according to the preamble of independent claim 1.

Hochbelastete Werkstücke wie beispielsweise Leit- und Laufschaufeln für Gasturbinen werden zur Verbesserung ihrer Temperatur- und/oder Abrasionsfestigkeit mit hierfür geeigneten Metallen, Metalllegierungen oder Keramiken beschichtet. Die Beschichtung kann mittels unterschiedlicher thermischer Beschichtungsverfahren erfolgen. Beispiele für solche Verfahren sind das atmosphärische Plasmaspritzen (APS) sowie das Hochgeschwindigkeits-Flammspritzen (HVOF) (vgl. Ullmanns Encyclopaedia of Industrial Chemistry, 2003, Band 21, S. 573 und 575 ).Highly stressed workpieces such as guide vanes and rotor blades for gas turbines are coated to improve their temperature and / or abrasion resistance with suitable metals, metal alloys or ceramics. The coating can be carried out by means of different thermal coating methods. Examples of such processes are atmospheric plasma spraying (APS) and high-speed flame spraying (HVOF) (cf. Ullmanns Encyclopedia of Industrial Chemistry, 2003, vol. 21, pp. 573 and 575 ).

Bei Turbinenschaufeln werden nur die Schaufelblätter, welche beim späteren Einsatz dem durchströmenden Medium ausgesetzt sind, beschichtet, während der Schaufelfuß unbeschichtet bleibt und während des Beschichtungsprozesses in einer Halterung fixiert und abgedeckt wird. Hierzu besitzt die Halterung ein Gehäuse mit einer Öffnung, durch welche die Turbinenschaufel mit ihrem Schaufelfuß in das Gehäuse eingesetzt wird; so dass sie mit dem zu beschichtenden Schaufelblatt aus der Öffnung des Gehäuses herausragt. Der Schaufelfuß wird in dem Gehäuse durch entsprechende Positionierelemente sowie Spanneinrichtungen ausgerichtet und fixiert.In the case of turbine blades, only the blades, which are exposed to the medium flowing through during later use, are coated, while the blade root remains uncoated and is fixed and covered in a holder during the coating process. For this purpose, the holder has a housing with an opening through which the turbine blade is inserted with its blade root in the housing; so that it protrudes with the blade to be coated from the opening of the housing. The blade root is aligned and fixed in the housing by means of corresponding positioning elements and clamping devices.

Ein Problem hierbei ist, dass aufgrund von Fertigungstoleranzen, Verschleiß und thermischem Verzug im Betrieb die Position der in der Halterung fixierten Turbinenschaufel nicht exakt festgelegt ist und insbesondere von Halterung zu Halterung variieren kann. Diese individuellen Abweichungen der Bauteilposition, welche sich aufgrund von Winkelfehlern mit zunehmendem Abstand von der Einspannstelle verstärken, können zu einer unerwünschten, ungleichmäßigen Verteilung der Schichteigenschaften und insbesondere der Schichtdicke führen, wenn während des Beschichtungsvorgangs der Beschichtungsroboter gegenüber den Halterungen auf einer programmierten Bahn bewegt wird.A problem here is that due to manufacturing tolerances, wear and thermal distortion during operation, the position of the turbine blade fixed in the holder is not precisely defined and can vary in particular from holder to holder. These individual deviations of the component position, which increase due to angular errors with increasing distance from the clamping point, can lead to an undesirable, uneven distribution of the layer properties and in particular of the layer thickness, if, during the coating process, the coating robot is moved relative to the holders on a programmed path.

Um diesen Schwierigkeiten zu begegnen, werden die bestehenden Halterungen in kurzen Intervallen ausgetauscht mit dem Zweck, verschleißbedingten Positionsungenauigkeiten entgegenzuwirken. Des Weiteren werden die Beschichtungsergebnisse ausgewertet und die Roboterverfahrwege sowie Beschichtungsparameter entsprechend korrigiert bzw. beeinflusst. Dies ist jedoch mit einem erheblichen Aufwand verbunden.To cope with these difficulties, the existing brackets are replaced at short intervals for the purpose of counteracting wear-induced position inaccuracies. Furthermore, the coating results are evaluated and the robot travel paths and coating parameters are corrected or influenced accordingly. However, this is associated with a considerable effort.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Halterung der eingangs genannten Art anzugeben, mit welcher eine hochgenaue Bauteilpositionierung möglich ist.The present invention is therefore based on the object to provide a holder of the type mentioned, with which a highly accurate component positioning is possible.

Diese Aufgabe ist erfindungsgemäß durch eine gattungsgemäß Halterung mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst..This object is achieved by a generic holder with the characterizing features of claim 1.

Aufgrund der erfindungsgemäß vorgesehenen Verstellmöglichkeiten können individuelle Positionsabweichungen der in den Halterungen gespannten Turbinenschaufeln in Bezug auf die Roboterbahn der Beschichtungsvorrichtung deutlich verringert werden mit dem Ergebnis, dass die Schichtqualität und insbesondere die Schichtdicke geringen Schwankungen unterliegt und dadurch reproduzierbarer wird. Des Weiteren können auch große Turbinenschaufeln mit kostengünstigen Vorrichtungen beschichtet werden, weil die Fertigungstoleranzen herabgesetzt werden können. Im Übrigen können Verschleiß, thermischer Verzug und andere nutzungsbedingte Fehlergrößen der Halterungen bei Kontrollmessungen auf einfache Weise durch Nachstellungen ausgeglichen werden.Due to the adjustment possibilities provided according to the invention, individual positional deviations of the turbine blades clamped in the supports with respect to the robot path of the coating apparatus can be significantly reduced, with the result that the layer quality and in particular the layer thickness is subject to slight fluctuations and thereby becoming more reproducible. Furthermore, even large turbine blades can be coated with inexpensive devices because the manufacturing tolerances can be reduced. Incidentally, wear, thermal distortion and other usage-related error sizes of the brackets during control measurements can be compensated in a simple manner by adjustments.

Gemäß einer Ausführungsform der Erfindung ist vorgesehen, dass die Positionierelemente und/oder die Spanneinrichtungen Positionierbolzen aufweisen, die in den Gehäuseboden und/oder in die Seitenwandungen des Gehäuses verstellbar eingeschraubt und an gewünschter Position beispielsweise mittels Konterschrauben gesichert werden können. Die Positionierelemente können dabei Auf- und/oder Anlageflächen aufweisen, welche an die Kontur der zu positionierenden Schaufelfüße angepasst sind.According to one embodiment of the invention, it is provided that the positioning elements and / or the clamping devices have positioning bolts, which can be adjustably screwed into the housing bottom and / or into the side walls of the housing and secured at the desired position, for example by means of counter-screws. The positioning elements may have mounting and / or abutment surfaces which are adapted to the contour of the blade roots to be positioned.

Die Positionierelemente und/oder die Spanneinrichtung sind in Längsschlitzen des Gehäusebodens und/oder der Gehäusewandungen verstellbar gehalten, wobei die Positionierelemente in diesem Fall derart keilförmig ausgebildet sein können, dass durch eine Längsverschiebung des Positionierelements der Abstand seine Auf- oder Anlagefläche von der korrespondierenden Gehäusewandung oder dem Gehäuseboden eingestellt werden kann.The positioning elements and / or the tensioning device are adjustably held in longitudinal slots of the housing bottom and / or the housing walls, wherein the positioning in this case may be wedge-shaped, that by a longitudinal displacement of the positioning of the distance its up or contact surface of the corresponding housing or the housing bottom can be adjusted.

Hinsichtlich weiterer vorteilhafter Ausgestaltungen der Erfindung wird auf die Unteransprüche sowie die nachfolgende Beschreibung von Ausführungsbeispielen unter Bezugnahme auf die beiliegende Zeichnung verwiesen.With regard to further advantageous embodiments of the invention, reference is made to the dependent claims and the following description of exemplary embodiments with reference to the accompanying drawings.

In der Zeichnung zeigt

Figur 1
eine erste Halterung zur Fixierung einer Turbinenschaufel gemäß der vorliegenden Erfindung in perspektivischer Darstellung,
Figur 2
die Halterung aus Figur 1 in einer Seitenansicht,
Figur 3
die Halterung aus Figur 1 in Draufsicht,
Figur 4
die Halterung im Schnitt entlang der Linie A-A aus Figur 3,
Figur 5
eine zweite Ausführungsform einer erfindungsgemäßen Halterung in perspektivischer Vorderansicht,
Figur 6
die Halterung aus Figur 5 in Seitenansicht,
Figur 7
die Halterung aus Figur 5 in perspektivischer Explosionsansicht,
Figur 8
die Halterung aus Figur 5 in Draufsicht,
Figur 9
eine dritte Ausführungsform einer erfindungsgemäßen Halterung in perspektivischer Darstellung,
Figur 10
die Halterung aus Figur 9 in Vorderansicht, und
Figur 11
die Halterung aus Figur 10 in Draufsicht.
In the drawing shows
FIG. 1
a first holder for fixing a turbine blade according to the present invention in a perspective view,
FIG. 2
the bracket off FIG. 1 in a side view,
FIG. 3
the bracket off FIG. 1 in plan view,
FIG. 4
the holder in section along the line AA FIG. 3 .
FIG. 5
A second embodiment of a holder according to the invention in a perspective front view,
FIG. 6
the bracket off FIG. 5 in side view,
FIG. 7
the bracket off FIG. 5 in a perspective exploded view,
FIG. 8
the bracket off FIG. 5 in plan view,
FIG. 9
A third embodiment of a holder according to the invention in a perspective view,
FIG. 10
the bracket off FIG. 9 in front view, and
FIG. 11
the bracket off FIG. 10 in plan view.

In den Figuren 1 bis 4 ist eine erste Ausführungsform einer erfindungsgemäßen Halterung vorgesehen, um eine Turbinenschaufel in beispielsweise einer thermischen Beschichtungsvorrichtung zu fixieren. Die Halterung besitzt ein im wesentlichen quaderförmiges Gehäuse 1 mit einem Gehäuseboden 2, das an seiner Unterseite einen Gehäusefuß 3 zur Anbringung an der Beschichtungsvorrichtung trägt, zwei Gehäusestirnwände 4 und zwei Gehäuseseitenwände 5. Die Oberseite des Gehäuses 1 ist offen ausgebildet und definiert eine begrenzte Öffnung 7, durch welche der Schaufelfuß einer einzuspannenden Turbinenschaufel in das Gehäuse 1 eingesetzt werden kann.In the FIGS. 1 to 4 a first embodiment of a holder according to the invention is provided to fix a turbine blade in, for example, a thermal coating device. The holder has a substantially cuboidal housing 1 with a housing bottom 2, which carries on its underside a housing foot 3 for attachment to the coating device, two housing end walls 4 and two housing side walls 5. The top of the housing 1 is open and defines a limited opening. 7 , by which the blade root of a turbine blade to be clamped can be inserted into the housing 1.

Wie insbesondere in den Figuren 3 und 4 gut erkennbar ist, sind in den beiden Gehäusestirnwänden 4, den Gehäuseseitenwänden 5 sowie dem Gehäuseboden 2 insgesamt sieben Positionierelemente 8 vorgesehen, die dazu dienen, einen in das Gehäuse 1 eingesetzten Schaufelfuß zu positionieren und zu fixieren. Die Positionierelemente 8 besitzen jeweils einen Positionierbolzen 9, welcher eine Öffnung in der jeweiligen Gehäusewandung 2, 4, 5 durchgreift und beidseitig der Gehäusewandung 2, 4, 5 jeweils eine Schraubenmutter 6 trägt, über welche der Positionierbolzen 9 an dem Gehäuse 1 fixiert werden kann. Die Positionierbolzen 9 bilden an ihren in das Gehäuse 1 ragenden Stirnflächen jeweils Auf- bzw. Anlageflächen 10, um einen in das Gehäuse 1 eingesetzten Schaufelfuß in dem Gehäuse 1 zu positionieren und fixieren. Dabei wird der Schaufelfuß an seiner Unterseite durch die Auflageflächen 10 der beiden in dem Gehäuseboden 2 vorgesehenen Positionierelemente 8 abgestützt, während die Positionierelemente 8, welche in den Gehäusestirnwänden 4 und den Gehäuseseitenwänden 5 vorgesehen sind, den Schaufelfuß stirnseitig und seitlich abstützen. Dabei kann die Position der Auf- und Anlageflächen 10 der Positionierelemente 8 verändert werden, indem die Positionierbolzen 9 in ihrer Längsrichtung verstellt werden. Hierzu brauchen lediglich die Schraubenmuttern 9a gelöst und nach erfolgter Positionierung wieder festgezogen zu werden.As in particular in the FIGS. 3 and 4 is clearly visible, a total of seven positioning elements 8 are provided in the two housing end walls 4, the housing side walls 5 and the housing bottom 2, which serve to position a blade inserted into the housing 1 and fix it. The positioning elements 8 each have a positioning pin 9, which passes through an opening in the respective housing wall 2, 4, 5 and on both sides of the housing wall 2, 4, 5 each carries a nut 6, via which the positioning bolt 9 can be fixed to the housing 1. The positioning bolts 9 form on their protruding into the housing 1 end surfaces each up or contact surfaces 10 to position a blade inserted into the housing 1 in the housing 1 and fix. In this case, the blade root is supported on its underside by the bearing surfaces 10 of the two provided in the housing base 2 positioning 8, while the positioning elements 8, which are provided in the housing end walls 4 and the housing side walls 5, the blade root endally and laterally supported. In this case, the position of the contact surfaces 10 and the positioning elements 8 can be changed by the positioning pins 9 are adjusted in their longitudinal direction. For this purpose, only the nuts 9a need to be loosened and tightened again after positioning.

In den Figuren 5 bis 8 ist eine zweite Ausführungsform einer erfindungsgemäßen Halterung dargestellt. Diese besitzt den gleichen Grundaufbau wie die erste Ausführungsform mit einem etwa quaderförmigen Gehäuse 1, das an seiner Oberseite eine Öffnung 7 aufweist, durch welche der Schaufelfuß einer Turbinenschaufel in das Gehäuse 1 eingesetzt werden kann.In the FIGS. 5 to 8 a second embodiment of a holder according to the invention is shown. This has the same basic structure as the first embodiment with an approximately cuboidal housing 1, which has on its upper side an opening 7 through which the blade root of a turbine blade can be inserted into the housing 1.

Wie in der Figur 7 gut erkennbar ist, kann zusätzlich eine Gehäuseseitenwand 5 gelöst werden, so dass der Schaufelfuß auch von der Seite her in das Gehäuse 1 eingeschoben werden kann. Die lösbare Gehäuseseitenwand 5 ist dabei mit der gegenüberliegenden Gehäuseseitenwand 5 durch einen Spannbolzen 11 verspannt. Der Spannbolzen 11 wird in Querrichtung durch das Gehäuse 1 gesteckt und trägt an den herausragenden Enden je eine Schraubenmutter 12.Like in the FIG. 7 can be clearly seen, a housing side wall 5 can be additionally solved so that the blade root can also be inserted from the side into the housing 1. The detachable housing side wall 5 is with the opposite housing side wall 5 clamped by a clamping bolt 11. The clamping bolt 11 is inserted in the transverse direction through the housing 1 and carries at the protruding ends depending on a nut 12th

Die Positionierung eines in das Gehäuse 1 eingesetzten Schaufelfußes erfolgt bei dieser Ausführungsform durch vier Positionierelemente 8, welche an dem Gehäuseboden 2 vorgesehen sind. Dabei ist ein Paar von Positionierelementen 8, welche im Bereich der höheren Gehäusestirnwand 4 vorgesehen sind, in gleicher Weise wie die Positionierelemente 8 der ersten Ausführungsform als Positionierbolzen 9 ausgebildet, welche an ihrer Oberseite eine Auflagefläche 10 definieren und an dem Gehäuseboden 2 mittels zwei Schraubenmuttern 6 verstellbar fixiert sind.The positioning of a blade root inserted into the housing 1 takes place in this embodiment by four positioning elements 8, which are provided on the housing bottom 2. In this case, a pair of positioning elements 8, which are provided in the region of the higher housing end wall 4, formed in the same manner as the positioning elements 8 of the first embodiment as positioning 9, which define a support surface 10 on its upper side and on the housing bottom 2 by means of two nuts. 6 are fixed adjustable.

Die im Bereich der niedrigeren Gehäusestirnwand 4 vorgesehenen beiden Positionierelemente 8 besitzen ebenfalls Positionierbolzen 9, welche durch Schraubenmuttern 6 an dem Gehäuseboden 2 verstellbar angebracht sind. Die Auflageflächen 10 sind hier jedoch an diskreten Auflageelementen 13 ausgebildet, welche an den in das Gehäuse 1 hineinragenden Endbereichen der Positionierbolzen 9 angebracht sind. Die Auflageflächen 10 der Auflageelemente 13 sind an die Form des zu positionierenden Schaufelfußes angepasst ausgebildet, so dass sie den Schaufelfuß nicht nur von der Unterseite her, sondern auch seitlich abstützen.The measures provided for in the lower housing end wall 4 two positioning elements 8 also have positioning bolts 9 which are adjustably mounted by nuts 6 on the housing bottom 2. However, the support surfaces 10 are formed here on discrete support elements 13, which are attached to the protruding into the housing 1 end portions of the positioning bolts 9. The support surfaces 10 of the support elements 13 are adapted to the shape of the blade root to be positioned, so that they support the blade root not only from the bottom, but also laterally.

In den Figuren 9 bis 11 ist schließlich eine dritte Ausführungsform einer erfindungsgemäßen Halterung dargestellt. Das Gehäuse 1 dieser Halterung ist hier in ähnlicher Weise wie das Gehäuse 1 der zweiten Ausführungsform ausgebildet und besitzt eine quaderartige Grundform, wobei die eine Gehäusestirnwand 4 höher als die andere Gehäusestirnwand 4 ausgebildet ist, so dass der Öffnungsrand geneigt ist. Auch hier ist eine Gehäuseseitenwand 5 von dem Gehäuse lösbar vorgesehen und durch zwei Spannbolzen 11 mit je zwei Schraubenmuttern 12 mit der gegenüberliegenden Gehäuseseitenwand 5 verspannt.In the FIGS. 9 to 11 Finally, a third embodiment of a holder according to the invention is shown. The housing 1 of this holder is formed here in a similar manner as the housing 1 of the second embodiment and has a cuboidal basic shape, wherein the one housing end wall 4 is formed higher than the other housing end wall 4, so that the opening edge is inclined. Again, a housing side wall 5 is detachably provided by the housing and clamped by two clamping bolts 11, each with two nuts 12 with the opposite side wall 5 of the housing.

In der niedrigeren Gehäusestirnwand 4 sind zwei Positionierelemente 8 vorgesehen, die in gleicher Weise wie die Positionierelemente 8 der ersten Ausführungsform als Positionierbolzen 9 ausgebildet sind, welche an ihrer Oberseite eine Auflagefläche 10 definieren und an der Gehäusestirnwand 4 mittels zwei Schraubenmuttern 6 verstellbar fixiert sind.In the lower housing end wall 4, two positioning elements 8 are provided, which are formed in the same manner as the positioning elements 8 of the first embodiment as positioning 9, which define a support surface 10 on its upper side and are fixed adjustable on the housing end wall 4 by means of two nuts 6.

In der höheren Gehäusestirnwand 4 und in dem Gehäuseboden 2 sind jeweils Paare von Positionierelementen 8 vorgesehen, welche in Schlitzen 14 verstellbar geführt werden. Die Auflageflächen 10 sind hier an Keilelementen 15 ausgebildet, so dass durch eine Längsverstellung der Keilelemente 15 in den Längsschlitzen 14 die Höhe der Auflagefläche 10 an einer vorgegebenen Abstützposition veränderbar ist.In the higher housing end wall 4 and in the housing bottom 2 pairs of positioning elements 8 are provided, which are guided in slots 14 adjustable. The support surfaces 10 are here formed on wedge elements 15, so that by a longitudinal adjustment of the wedge elements 15 in the longitudinal slots 14, the height of the support surface 10 is variable at a predetermined support position.

Dadurch, dass bei den erfindungsgemäßen Halterungen die Positionierelemente 8 verstellbar sind, können individuelle Positionsabweichungen der in den Halterungen gespannten Turbinenschaufel in Bezug auf eine Roboterbahn verringert werden. Dabei kann die Justierung der Positionierelemente einer Halterung durch ein markiertes Musterbauteil erfolgen, welches in die Halterung eingesetzt wird, sowie anhand fester Bezugspunkte, die beispielsweise über einen feststehenden Rahmen oder eine Koordinatenmessmaschine festgelegt werden können.Because the positioning elements 8 are adjustable in the holders according to the invention, individual position deviations of the turbine blade clamped in the holders with respect to a robot path can be reduced. In this case, the adjustment of the positioning of a holder can be done by a marked pattern component, which is inserted into the holder, as well as fixed reference points, which can be determined for example via a fixed frame or a coordinate measuring machine.

Claims (6)

  1. Holding device for fixing a turbine blade in a coating apparatus, comprising a housing (1), which has an opening (7), through which the blade root of the turbine blade can be inserted into the housing in such a way that the turbine blade protrudes from the housing (1) with its airfoil to be coated, which adjoins the blade root, positioning elements (8) and/or clamping devices being provided in the housing (1) in order to position the blade root inserted into the housing (1) and fix it in the positioned state, characterized in that the positioning elements (8) and/or the clamping devices are adjustable, so that the clamping position of the turbine blade is adjustable and in that the positioning elements (8) and/or the clamping devices are adjustably held in longitudinal slots (7) of the housing base (2) and/or of the housing walls (4, 5).
  2. Holding device according to Claim 1, characterized in that the positioning elements (8) have resting and/or bearing surfaces (10) adapted to the contour of the blade roots.
  3. Holding device according to Claim 1 or 2, characterized in that the positioning elements (8) and/or the clamping devices have positioning bolts (9), which are adjustably screwed into the housing base (2) and/or into the side walls (4, 5) of the housing (1) and can be secured at the desired position.
  4. Holding device according to Claim 1, characterized in that at least one positioning element (8) is formed in a wedge-shaped manner in such a way that a longitudinal displacement of the positioning element (8) allows the distance of its supporting or bearing surface from the corresponding housing wall (4, 5) or the housing base (2) to be set.
  5. Method for adjusting a holding device according to one of the preceding claims, in which a marked model component is inserted into the holding device and positioned and clamped by means of adjustment of the positioning elements and/or clamping devices on the basis of external reference points.
  6. Method according to Claim 5, characterized in that the external reference points are fixed by means of a stationary frame or a coordinate measuring machine.
EP20060000954 2006-01-17 2006-01-17 Holding device for a turbine blade Not-in-force EP1808269B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20060000954 EP1808269B1 (en) 2006-01-17 2006-01-17 Holding device for a turbine blade
DE200650001543 DE502006001543D1 (en) 2006-01-17 2006-01-17 Holder for fixing a turbine blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20060000954 EP1808269B1 (en) 2006-01-17 2006-01-17 Holding device for a turbine blade

Publications (2)

Publication Number Publication Date
EP1808269A1 EP1808269A1 (en) 2007-07-18
EP1808269B1 true EP1808269B1 (en) 2008-09-10

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Application Number Title Priority Date Filing Date
EP20060000954 Not-in-force EP1808269B1 (en) 2006-01-17 2006-01-17 Holding device for a turbine blade

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DE (1) DE502006001543D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2181775B1 (en) 2008-11-04 2012-09-12 Siemens Aktiengesellschaft Holder for large components with improved spray protection
GB2484365B (en) * 2011-06-02 2012-11-21 Aviat Entpr Ltd Attachment systems for rotor blades
CN113210160B (en) * 2021-03-25 2022-09-16 中国航发南方工业有限公司 Blade vacuum spraying protection clamp

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1048935A (en) * 1962-05-10 1966-11-23 Bernard Charles Roach Work holding clamp
DE8803312U1 (en) * 1988-03-11 1988-08-18 I + I Ingenieurtechnik + Innovation für Präzisionsprodukte GmbH, 7140 Ludwigsburg Device for aligning and holding rifle stocks
US5026032A (en) * 1990-02-22 1991-06-25 Southern California Edison Blade assembly tool
US5209450A (en) * 1992-07-08 1993-05-11 Grapes Jacklyn O Christmas tree stand
DE19547952A1 (en) * 1995-12-21 1997-06-26 Goetz Metall Anlagen Clamping device for clamping workpieces with any circumferential contour
US5816568A (en) * 1996-11-12 1998-10-06 Fox; Phillip S. Component holding system
WO2002087828A1 (en) * 2001-04-27 2002-11-07 Kurt Lampert Clamping device

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DE502006001543D1 (en) 2008-10-23
EP1808269A1 (en) 2007-07-18

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