EP2111950B1 - Sandstrahlverfahren und -vorrichtung - Google Patents

Sandstrahlverfahren und -vorrichtung Download PDF

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Publication number
EP2111950B1
EP2111950B1 EP09158195A EP09158195A EP2111950B1 EP 2111950 B1 EP2111950 B1 EP 2111950B1 EP 09158195 A EP09158195 A EP 09158195A EP 09158195 A EP09158195 A EP 09158195A EP 2111950 B1 EP2111950 B1 EP 2111950B1
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EP
European Patent Office
Prior art keywords
recess
rotor
support system
acoustic assembly
cell
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EP09158195A
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English (en)
French (fr)
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EP2111950A1 (de
Inventor
Vincent Desfontaine
Patrick Cheppe
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Sonats - Nouvelles Applications Des Techniques De Surfaces Ste
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Sonats - Nouvelles Applications Des Techniques De Surfaces Ste
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Publication of EP2111950A1 publication Critical patent/EP2111950A1/de
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Publication of EP2111950B1 publication Critical patent/EP2111950B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/005—Vibratory devices, e.g. for generating abrasive blasts by ultrasonic vibrations

Definitions

  • the present invention relates to a method and a blasting device comprising an acoustic assembly and projectiles set in motion by the acoustic assembly.
  • the invention aims to meet this need and it achieves this through a method of blasting a rotating machine comprising a rotor, the rotor having cells at its periphery, the method for blasting a portion of at least one of of said cells, the method comprising the steps of claim 1.
  • the treatment can take place on site, for example in a plant or near an aircraft equipped with the machine, or in the factory, in all cases on a rotor at least partially assembled.
  • the downtime of the machine can be reduced, because complete disassembly of the machine is avoided.
  • rotor By rotor at least partially assembled, it should be understood that the rotor has not been completely extracted from the stator of the machine, or that the rotor is not mounted in the stator but not completely disassembled, the treated rotor part being for example assembled with other rotor components, such as one or more disks or casings and / or shafts and / or cables.
  • the rotor may comprise, during the shot blasting process, at least the majority of the components that equip it when the rotor is in position ready for operation in the rotating machine.
  • the rotor is thus not limited, during its treatment, to a single blisk or a rim.
  • the method according to the invention can allow in situ treatment, when the rotor is in place with the machine on an aircraft or in a central, for example.
  • the treatment may be intended for example to introduce compressive stresses to prevent the propagation of cracks on the part in its existing geometry or after new machining thereof to repair or make a change in its shape.
  • the cells can be used directly for fixing fins, also called blades or blades, by cooperation of shapes between each cell and the foot of the corresponding fin.
  • the cells may comprise walls having reliefs of various shapes for assembly with the fins. They may have for example in axial section a form of dovetail, fir or other.
  • the cells can also be formed between male parts for attaching the fins, these male parts protruding on the rotor and having for example a fir shape.
  • the treated portion of the cell may or may not be a portion that comes into contact with the fin.
  • the treated portion may be for example a hole opening into the part of the cell which serves to fix the fin, this hole serving for example to cool the fin.
  • the attachment arm can be fixed in a cell adjacent to the current cell to be treated.
  • the method may comprise the step of fixing in two cells at least, respectively located on either side of the current cell to be treated, latching arms.
  • Each arm may comprise a gripping portion locked in the corresponding cell by means of a counter-support system resting on the rotor elsewhere than in the cell, for example on a rotor surface adjacent to the opening of the cell or a surface of the rotor located in another cell.
  • Maintaining can still be provided by a clamping system acting on the attachment portion, for example to expand or bear on at least two surfaces of the cell by exerting forces in opposite directions.
  • the acoustic assembly is moved relative to the support system to treat the current cell.
  • the latching arms may be movable relative to the support system.
  • the attachment arms may comprise attachment portions arranged to lock in the corresponding cells through a change of shape.
  • the attachment portions may for example be supported on surfaces of the side walls of the cells which are substantially transverse to an axis passing through the bottom of the cell and the opening thereof.
  • the attachment portions may for example be supported on two surfaces of reliefs facing the side walls of the cell or on a surface of a relief of the wall of the cell facing the bottom thereof and on a surface located around the cell outside thereof, for example in two places.
  • the locking of the latching arms on the rotor can be effected for example by acting on the spacing between the arms.
  • the deformation of the attachment parts can be mechanical, hydraulic or pneumatic, among others.
  • At least a part of the acoustic assembly for example the sonotrode, integral with the support system, can be movable relative thereto, for example in rotation around the longitudinal axis of the acoustic assembly and / or transversely to the longitudinal axis of the acoustic assembly.
  • the acoustic assembly can be secured to guides that apply to the current cell.
  • Such guides can guide and position the treatment chamber and the acoustic assembly relative to the current cell to be treated.
  • the rotational and / or transverse mobility of the acoustic assembly on the support system may be free, the acoustic assembly being for example rotated or displaced relative to the support system only under pressure. guides.
  • the displacement of the acoustic assembly relative to the cell may be effected under the action of at least one motor, for example by knowing the profile of the cell to be treated or by means of sensors introduced into the cell. it.
  • the acoustic assembly may comprise at least one sonotrode.
  • the sonotrode may have an end face which constitutes a vibrating surface and which serves to move the projectiles, extending along a rectilinear or curvilinear longitudinal axis, for example curved about an axis parallel to the longitudinal axis of the sonotrode. This curved shape of the end face forming the vibrating surface can make it possible to adapt to a cell to be treated which would be curved.
  • the acoustic assembly may comprise at least one carrier piece supporting at least two sonotrodes. This can make it possible to treat at least two localized zones of the current cell to be treated simultaneously. The number of zones treated simultaneously is equal to the number of sonotrodes, which can be greater than or equal to two.
  • the support system in addition to the acoustic assembly, can also support at least one sensor that can improve the guidance of the acoustic assembly including the sonotrode, inside the room, including the cell, to be treated.
  • the support system may include at least one measuring tool for measuring at least one characteristic of the workpiece before and / or after its abrasive treatment.
  • the support system can rest directly and / or indirectly on the ground thanks to any type of base or be entirely supported by the rotor.
  • the support system may comprise at least two acoustic assemblies each comprising a sonotrode, the end faces of said at least two sonotrodes being for example at least partially directed toward each other. This can make it possible to treat two opposite faces of a wall or a projecting edge, for example.
  • the support system may comprise at least two acoustic assemblies each comprising a sonotrode, the end faces of said at least two horns being elongate along respective longitudinal axes forming an angle between them, being for example perpendicular to each other. These end faces may be planar or not, coplanar or not. This may allow for example to simultaneously treat the current cell to be treated and other areas located at the periphery of the current cell to be treated.
  • the shot peening can be carried out for example to obtain an ALMEN intensity of at least F10N.
  • the device 1 represented on the figure 1 is a device for blasting the rotor R of a rotating machine M, which is only partially represented.
  • the rotor R can rotate relative to a not shown stator.
  • the machine M is for example a gas or steam turbine, for example an aircraft engine whose rotor R has not been completely extracted from the stator.
  • the machine M is for example in place in its environment of use, for example in the central or on an aircraft wing, in which case the invention is implemented in situ .
  • the machine M may still have been dismounted from an aircraft and placed on a cradle not shown, this which may be the case for example of an aircraft engine.
  • the rotor R may not have been completely extracted from the stator.
  • the rotor R can still be extracted completely from the stator but not disassembled.
  • the machine M may have to undergo shot blasting treatment on a predefined region, for example a local blasting treatment following the detection of a crack or a defect. It may be shot blast cells A located on the periphery of the rotor. These cells A are intended to receive blades.
  • the blasting device 1 comprises one or more vibration generators which excite one or more acoustic assemblies each comprising one or more sonotrodes, which are not represented on the figure 1 for the sake of clarity of the drawing.
  • An acoustic assembly comprises for example a piezoelectric transducer, also called converter, which transforms an electric current sent by the generator into a mechanical wave.
  • the amplitude of vibration of the piezoelectric transducer is amplified using one or more acoustic stages called boosters, until the last piece of the stack which constitutes the sonotrode and which defines the vibrating surface on a surface of end of the sonotrode.
  • the sonotrode may be arranged to vibrate relatively homogeneously over the entire vibrating surface on an end face of the sonotrode.
  • the device defines with the treated part at least one treatment chamber containing projectiles, for example spherical balls with a diameter ranging from 0.3 mm to 5 mm.
  • the density of the projectiles is for example between 2 g / cm 3 and 16 g / cm 3 .
  • the quantity of projectiles is for example between 0.2 and 500 g.
  • the hardness of the projectiles is for example between 200 and 2000 HV.
  • the device may comprise a control system arranged to control, if necessary, drive means of at least one acoustic assembly, in order to move the acoustic assembly relative to the machine M and allow the treatment of for example several cells of the rotor.
  • the device may optionally comprise compressed air injection means in the treatment chamber or to it to initiate the movement of the projectiles, if necessary.
  • the device may also comprise detection means that can prevent the operation of the acoustic assembly under certain conditions, for example when there is a risk of accidental departure of projectiles.
  • the blasting device 1 comprises a support system 2 supporting an acoustic assembly 3, partially visible in this figure, and a base 4 allowing, if necessary, to move the acoustic assembly relative to the support system 2, for example to to follow the shape of the cell, the cells may extend rectilinearly or curvilinearly in the thickness of the rotor.
  • the support system 2 carries at least one latching arm, in particular two latching arms 6.
  • the latter each support a latching portion 5.
  • the attachment portions 5 are arranged to each be fixed in a cell A, the cells A receiving these attachment portions 5 being, in the illustrated example, located respectively on either side of the current cell to be treated. ac.
  • Each cell has walls which have relief hooking blades, these reliefs may have various shapes, for example dovetail or other.
  • the support system 2 is thus fixed to the rotor R by the attachment arms 6.
  • the attachment arms 6 are movable relative to the support system 2.
  • the acoustic assembly 3 comprises a sonotrode 7 whose end face constitutes the vibrating surface 8.
  • the treatment chamber 9 is delimited on the one hand by the walls of the cell Ac to be treated and on the other hand by partitions 10 located on either side of the vibrating surface 8 perpendicular to it.
  • the blasting device 1 may further comprise guides 11 for guiding the sonotrode inside the current cell to be treated Ac.
  • the partitions 10 of the processing chamber 9 have a shape substantially adapted to the geometry of the cell, for example with a clearance less than or equal to half the diameter of the projectiles.
  • the figure 3 illustrates an example of a fastening system of the attachment arm (s) 6 by means of the attachment part or parts 5.
  • This fastening system comprises a clamping system acting on the or each attachment portion of the arm or arms to exert a locking of the engaging portion engaged in the cell A.
  • the attachment portions 5 bear on surfaces of the side walls of the cells A which are substantially transverse to the axis K passing through the bottom of the cell and the opening thereof.
  • the attachment portions 5 comprise an upper jaw 5a and a lower jaw 5b, the jaws 5a and 5b being able to be moved towards or apart, for example by means of a screw / nut system according to which it is desired to remove the attachment part 5 of the cell A or that we want to fix it on it so as to hook the support system 2.
  • the base 4 is mounted on rails 15 allowing it to slide along an axis Y and on rails 16 perpendicular to the rails 15 and for sliding along an axis X perpendicular to the axis Y.
  • the acoustic assembly 3 and in particular the sonotrode 7 are furthermore, in the illustrated example, rotatable about an axis Z perpendicular to the X and Y axes.
  • the rotational and / or transverse mobility of the acoustic assembly 3 on the support system 2 may be free, the acoustic assembly 3 being for example rotated or displaced relative to the support system only under the pressure of the guides 11 for example.
  • the displacement can be motorized, for example by knowing the profile of the cell to be treated or by means of sensors introduced into it.
  • the base 4 is stationary relative to the support system 2.
  • the support system 2 may not comprise a mobile base 4 sliding on rails as illustrated but may for example comprise a manipulator arm supporting the acoustic assembly and can change the orientation of the sonotrode by relative to the X, Y and Z axes.
  • the blasting process it is possible to fix in at least two cavities A, located on either side of the common cell to be treated Ac, the latching arms 6 of the latching system. support 2; the current cell Ac is shot through the acoustic assembly 3 integral with the support system 2. It is possible to treat all or only part of the cell Ac, by example a hole.
  • the support system can then be disassembled, that is to say unhook the arms 6, then move the support system 2 and / or the rotor R relative to each other, and fix the support system 2 on two other cells A located respectively on either side of a new cell to be treated.
  • the attachment portion 5 comprises two branches 25 secured and rotatable about an axis of rotation 26, and a part 27 acting as a wedge and secured to a rod extending along the axis K .
  • the piece 27 can be moved along the rod along the axis K, for example to be introduced between the facing faces of the branches 25 and to bear against them to separate them from the other, the free ends of the branches 25 then being applied against the walls of the cell, which allows to block and hang the support system 2.
  • the locking of one or more attachment parts of the attachment arm (s) engaged (s) in a cell is effected by means of a clamping system or the attachment portions.
  • the attachment portions 5 each bear on two reliefs facing the side walls of the cell.
  • the locking of one or more attachment parts of the attachment arm (s) engaged in a cell A is carried out by means of a counter-support system resting on the rotor elsewhere than in the cell A, for example on the periphery of the rotor, for example around the cell A.
  • the attachment portions 5 can be supported on the one hand on a surface of a relief of the side wall of the cell turned towards the bottom thereof and secondly on a surface located outside the cell, for example in two places on either side of the cell.
  • the attachment of the support system 2 is made with the aid of a hooking portion 5 which can come on the one hand bearing on a relief of the wall of the cell A and on the other hand resting on the rotor with counter-supports 30 situated respectively on either side of the cell A, these counter-supports 30 comprising for example screws 32 screwing on a plate 31 disposed substantially perpendicular to the axis K
  • the hooking portion 5 bearing on a relief of the cell is fixed relative to the plate 31.
  • the screws 32 can be screwed and for example press on either side of the cell A, which allows to move the plate 31 away from the cell A and thus to block the attachment portion 5 against the relief of the cell A, as illustrated.
  • the attachment system is the same as that of the figure 6 .
  • the attachment portion 5 has a shape a little different from that of the figure 6 to adapt to the geometry of the cell A.
  • the attachment portion 5 can bear on two reliefs located at different heights of the side wall of the cell (and not one as in the example of the figure 6 ).
  • the attachment arms 6 may comprise attachment portions arranged to become wedged in the corresponding cells by a change of shape.
  • the locking of the latching arms on the rotor can be effected for example by acting on the spacing between the arms.
  • Such blocking is done by means of a clamping system acting on the attachment parts.
  • the support system 2 comprises a base 4 arranged so as to allow the attachment arms 6 to be brought closer together.
  • the attachment arms 6 can move, for example, in sliding on the base 4, so as to bear against the walls. side of the cell and thus hang the support system 2.
  • FIG 9 another example of an attachment arm 6 is shown.
  • the latter has a first arm portion 35 connected to a first hinge portion rotatable relative to a second hinge portion 37 around an axis 40.
  • this second hinge portion being connected to an arm portion 38 fixed at its other end to the acoustic assembly 3 through a lockable ball joint connection.
  • the first arm portion 35 is also fixed by means of a locking ball joint connection to the attachment portion 5.
  • the arm assembly 6 is equipped with an internal locking system of the links. This system, as illustrated on the figure 9 , can be activated by a wheel 39, which can be replaced by a pneumatic, hydraulic or mechanical actuator of another form.
  • the attachment portion 5 is fixed by means of a counter-support system which comprises for example a knob 60 and a nut 61 abutting the periphery of the cell A to block the snagging part 5.
  • a counter-support system which comprises for example a knob 60 and a nut 61 abutting the periphery of the cell A to block the snagging part 5.
  • the rotation of the wheel 60 makes it possible to move the attachment part relative to the nut 61.
  • the support system 2 may carry a single acoustic assembly 3 comprising a sonotrode 7.
  • the support system may carry a plurality of acoustic assemblies 3 each comprising a sonotrode 7, as illustrated in FIGS. Figures 10 to 12 and 14 to 17 , or one or more acoustic assemblies can each support a carrier part itself supporting several sonotrodes, as illustrated on the figure 13 .
  • the plurality of sonotrodes particularly when they are arranged side by side, can make it possible to treat the whole of the current cell Ac, if desired.
  • the two sonotrodes 7 are arranged side by side and the vibrating surfaces 8 extend along a straight axis L.
  • the vibrating surfaces 8 constituting the end faces of the sonotrodes form between them a non-zero angle ⁇ , for example to treat an edge.
  • Another arrangement of the sonotrodes 7 may consist in arranging the vibrating surfaces 8 in a same plane but extending longitudinally along respective axes S1 and S2 perpendicular to each other, as illustrated in FIG. figure 12 .
  • each of the two acoustic assemblies supports a carrier part 41 which itself carries several, in particular two, sonotrodes 7.
  • the carrier piece 41 serves to fix several sonotrodes on the same acoustic assembly.
  • the support system comprises a single acoustic assembly carrying a carrier part, itself supporting several sonotrodes.
  • the sonotrodes may have end faces of generally rectangular shape as illustrated on the Figures 10 to 12 .
  • the sonotrode or sonotrodes may comprise a vibrating surface extending along a curvilinear axis, for example to treat a curvilinear cell.
  • the general shape of the end face of the sonotrode is not rectangular but has at least two curvilinear edges 44.
  • sonotrodes 7 Each of these sonotrodes extends along a curvilinear axis P as can be seen also on the figure 17 .
  • the sonotrodes 7 are arranged side by side and the adjacent edges 45 of the vibrating surfaces are for example rectilinear and arranged parallel to each other, as visible on the Figures 16 and 17 , especially.
  • the Figures 18 to 20 illustrate the possibility of introducing at least partially the acoustic assembly or sets, in particular the sonotrode 7, inside the cell Ac to be treated.
  • the sonotrode (s) As visible on Figures 19 and 20 it is possible to introduce the sonotrode (s) more or less deeply inside the current cell to be treated Ac, according to the treatment needs. It is also possible to move the sonotrode 7 inside the cell more or less deeply during the same treatment, with, for example, interrupting shot blasting when the sonotrode (s) are moved.
  • the fact of introducing the sonotrode (s) into the interior of the current cell to be treated can make it possible to concentrate the effect of shot blasting, for example when the cell is very large, especially in the parts of the room which are the more critical.
  • the sonotrode is surmounted by an anvil 50, for directing the projectiles 51 to a zone 52 to be treated, forming a hole in the illustrated example.
  • the excitation of the sonotrode or sonotrodes can be carried out other than by piezoelectric vibration, for example by pneumatic, electromechanical or other vibration.
  • the cells A may comprise side walls having attachment reliefs of various shapes, for example in the form of a dovetail or other.
  • This fin has a complementary shape of the protrusion E.
  • the shot blasting may relate for example to a portion of the surface of the excrescences E.
  • the attachment of the support system can be done by pressing on one or both sides of a protrusion E.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Disintegrating Or Milling (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Claims (12)

  1. Verfahren zum Kugelstrahlen einer rotierenden Maschine, die einer. Rotor umfasst, wobei der Rotor an seiner umlaufenden Außenseite Vertiefungen aufweist und das Verfahren den Zweck hat, mindestens einen Teil dieser Vertiefungen kugelzustrahlen, und das Verfahren folgende Schritte umfasst:
    - Befestigung in mindestens einer Vertiefung (A), bei der es sich nicht um die aktuell zu bearbeitende Vertiefung (Ac) handelt, mindestens eines Greifarms (6) eines Haltesystems (2), indem mit Hilfe eines Gegendrucksystems (30), das sich anderweitig als in der aktuellen Vertiefung auf den Rotor stützt, und/oder eines Spannsystems, das auf das Greifteil (5) wirkt, ein Greifteil (5) dieses Greifarms (6), das in der Vertiefung steckt, festgestellt wird,
    - mindestens teilweises Kugelstrahlen der aktuellen Vertiefung (Ac) mit Hilfe einer akustischen Einheit, die formschlüssig mit dem Haltesystem verbunden ist,
  2. Verfahren gemäß Anspruch 1, bei dem der Greifarm (6) in einer an die aktuell zu bearbeitende Vertiefung (Ac) angrenzende Vertiefung (A) befestigt ist.
  3. Verfahren gemäß einem der vorstehenden Ansprüche, das einen Schritt umfasst, der darin besteht, dass in mindestens zwei Vertiefungen (A), die sich beiderseits der aktuell zu bearbeitenden Vertiefung (Ac) befinden, Greifarme (6) befestigt werden.
  4. Verfahren gemäß einem der vorstehenden Ansprüche, bei dem die akustische Einheit (3) relativ zu dem Haltesystem (2) verschoben wird, um die aktuelle Vertiefung (Ac) zu bearbeiten.
  5. Verfahren gemäß einem der vorstehenden Ansprüche, bei dem die Feststellung eines in die Vertiefung (A) eingreifenden Greifteils (5) des Greifarms (6) mit einem Gegendrucksystem (30) erfolgt, das sich anderweitig als in der Vertiefung (A) auf den Rotor stützt.
  6. Verfahren gemäß einem der vorstehenden Ansprüche 1 bis 4, bei dem die Feststellung eines in die Vertiefung (A) eingreifenden Greifteils (5) des Greifarms (6) mit einem Spannsystem erfolgt, das auf den Greifteil (5) wirkt.
  7. Verfahren gemäß einem der vorstehenden Ansprüche, bei dem die akustische Einheit (3) formschlüssig mit Führungen (11) verbunden ist, die auf die aktuelle Vertiefung (Ac) aufgesetzt werden können.
  8. Verfahren gemäß einem der vorstehenden Ansprüche, bei dem die akustische Einheit (3) eine Sonotrode (7) umfasst, die eine Endseite (8) aufweist, welche dazu dient, die Strahlkörper in Bewegung zu versetzen, wobei diese Endseite (8) nach einer gekrümmten Längsachse (P) verläuft.
  9. Verfahren gemäß einem der vorstehenden Ansprüche, bei dem die akustische Einheit ein Trageteil (41) umfasst, auf dem mindestens zwei Sonotroden (7) angebracht sind.
  10. Verfahren gemäß einem der vorstehenden Ansprüche, bei dem das Haltesystem (2) mindestens zwei akustische Einheiten (3) umfasst, wobei die Endseiten dieser mindestens zwei Sonotroden zumindest teilweise zueinander gerichtet sind.
  11. Verfahren gemäß einem der vorstehenden Ansprüche, bei dem das Haltesystem (2) mindestens zwei akustische Einheiten (3) umfasst, wobei die Endseiten dieser mindestens zwei Sonotroden jeweils gemäß Längsachsen (S1, S2) ausgerichtet sind, welche untereinander einen Winkel bilden.
  12. Vorrichtung zum Kugelstrahlen des Rotors einer rotierenden Maschine, umfassend:
    - ein Haltesystem,
    - eine formschlüssig mit dem Haltesystem verbundene akustische Einheit,
    wobei das Haltesystem mindestens einen Arm umfasst, der ein Greifteil hat, das in einer Vertiefung, bei der es sich nicht um die aktuell zu bearbeitende Vertiefung handelt, befestigt werden kann, sowie ein Mittel zum Feststellen des Greifteils,
    - dadurch gekennzeichnet, dass dieses Feststellmittel ein Gegendrucksystem umfasst, das sich anderweitig als in der aktuell zu bearbeitenden Vertiefung auf den Rotor stützt, und/oder ein Spannsystem, das auf den Greifteil wirkt,
    wobei das Haltesystem (2) vorzugsweise mindestens zwei Greifarme (6) umfasst, die das Einrasten des Rotors (R) an zwei Vertiefungen (A) ermöglicht, welche sich beiderseits einer aktuell von der akustischen Einheit (3) zu bearbeitenden Vertiefung (Ac) befinden.
EP09158195A 2008-04-22 2009-04-17 Sandstrahlverfahren und -vorrichtung Active EP2111950B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0852703A FR2930185B1 (fr) 2008-04-22 2008-04-22 Procede et dispositif de grenaillage

Publications (2)

Publication Number Publication Date
EP2111950A1 EP2111950A1 (de) 2009-10-28
EP2111950B1 true EP2111950B1 (de) 2011-01-05

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EP (1) EP2111950B1 (de)
AT (1) ATE494102T1 (de)
DE (1) DE602009000515D1 (de)
FR (1) FR2930185B1 (de)

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US10493594B2 (en) * 2016-04-12 2019-12-03 General Electric Company Apparatus and method for peening of machine components

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KR101410638B1 (ko) * 2005-05-12 2014-06-20 제너럴 일렉트릭 캄파니 조립된 구성요소의 초음파 피닝 처리
FR2907360B1 (fr) * 2006-10-20 2009-05-22 Sonats Soc Des Nouvelles Appli Procedes et installations de grenailles.

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EP2111950A1 (de) 2009-10-28
ATE494102T1 (de) 2011-01-15
FR2930185B1 (fr) 2010-08-27
FR2930185A1 (fr) 2009-10-23
DE602009000515D1 (de) 2011-02-17

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