EP4084926B1 - Machine de finition et/ou de contrôle d'une surface tridimensionnelle d'une pièce et système comprenant une telle machine - Google Patents

Machine de finition et/ou de contrôle d'une surface tridimensionnelle d'une pièce et système comprenant une telle machine Download PDF

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Publication number
EP4084926B1
EP4084926B1 EP20851345.7A EP20851345A EP4084926B1 EP 4084926 B1 EP4084926 B1 EP 4084926B1 EP 20851345 A EP20851345 A EP 20851345A EP 4084926 B1 EP4084926 B1 EP 4084926B1
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EP
European Patent Office
Prior art keywords
head
machine
clamping unit
holder frame
operating head
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EP20851345.7A
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German (de)
English (en)
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EP4084926A1 (fr
Inventor
Costanzo Perico
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Maya Powersystem Srl
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Maya Powersystem Srl
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Publication of EP4084926A1 publication Critical patent/EP4084926A1/fr
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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
    • 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
    • B24B21/16—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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto

Definitions

  • the present invention falls within the scope of the production of machines for finishing a three-dimensional surface of a workpiece, preferably a blade of a gas turbine or compressor.
  • the present invention relates to a machine for finishing and/or checking a three-dimensional surface of a workpiece and to an automated system comprising such a machine.
  • the finishing operation of a three-dimensional surface represents the final swarf removing operation to which a workpiece is subjected before its use.
  • this operation serves to bring the dimensions of the workpiece within the tolerance dimensions both from the dimensional and from the geometric point of view (shape and roughness).
  • Such assembly comprises a device for supporting a workpiece which configures one or more degrees of freedom of movement for the workpiece itself.
  • the assembly also comprises a structure for supporting and moving a removal head provided with a tool for removing material from the surface of the workpiece.
  • the support structure configures a plurality of degrees of freedom of movement for the removal head.
  • the assembly described in PCT/IB2007/053767 also comprises control means which drive the support structure and the support device so that the removal of the material always takes place in a direction substantially normal to said three-dimensional surface.
  • this aspect leads to the impossibility of inserting the working assembly in an automated system.
  • the finishing of turbine or compressor blades, or other similar products is an operation carried out separately, i.e. outside the automated line (including numerically controlled machine tools and/or manipulators) through which the workpiece is made.
  • the main aim of the object of the present invention is to provide a machine for finishing a three-dimensional surface of a workpiece which allows the above-mentioned drawbacks to be overcome.
  • an object of the present invention is to provide a machine which allows to eliminate, or at least to strongly containing, the times associated with tool change operations, while still guaranteeing a high final quality.
  • Another object of the present invention is to provide a machine which can be easily inserted into an automated line for the production of a workpiece, in particular for the production of a turbine or compressor blade.
  • an object of the present invention is to provide a machine which is reliable, easy to manufacture at competitive manufacturing costs.
  • the tool change operation is not completed by removing only the tool already used, but rather by removing the entire support (operating head) of the tool itself.
  • the deactivation of the clamping unit allows you to quickly remove the operating head to replace it with another ready-made one on which the tool or sensor necessary for the subsequent processing or subsequent inspection is mounted.
  • the main advantage that can be reached is therefore that of allowing the reduction of time, and therefore of the related costs, necessary to complete the tool change operations.
  • the positioning of the operating head in the working position, as well as its removal may also be carried out by means of a manipulator or in any case an automated system.
  • the machine according to the invention can therefore be inserted in an automated production system as defined by claim 19.
  • the machine according to the invention is generally indicated with the reference numeral 1 and is used for finishing and/or checking a three-dimensional surface of a workpiece, preferably for finishing the surface of a blade of a turbine or compressor.
  • the expression "surface finishing” wants to indicate generically all those mechanically similar operations, such as polishing, lapping or grinding, which are traditionally carried out on a workpiece in order to bring the dimensions and/or shapes of the surfaces of the workpiece itself within predetermined tolerances.
  • the term “surface finishing” also includes a possible shot peening operation which consists in making microspheres of variable shape and composition adhere to the surface of the workpiece by means of a violent jet of compressed air coming out of a nozzle.
  • the machine 1 according to the invention comprises a first device 10 which supports the workpiece 5.
  • the first device 10 configures a plurality of degrees of freedom for the workpiece 5.
  • the machine according to the invention also comprises a second device 20 for supporting and moving a finishing tool 15, which may be, for example, an abrasive belt or an abrasive wheel and/or a surface control sensor.
  • a finishing tool 15 may be, for example, an abrasive belt or an abrasive wheel and/or a surface control sensor.
  • the second device 20 comprises a support and movement assembly 25 which supports and moves a head-holder frame 21 (hereinafter referred to only as “frame 21 "). Said frame 21, in turn, supports an operating head 22 (also indicated with the expression “head 22 ").
  • the expression “operating head” generically indicates a component that supports/carries a finishing tool or a control tool of the surface of the workpiece.
  • the second device 20 configures a plurality of degrees of freedom for the frame 21 and therefore for the head 22 when it is connected to the frame 21.
  • the head 22 is connected to the frame 21 by means of a clamping unit 30 which when activated (activation mode) firmly blocks the head 22 to the frame 21 in a predetermined position (hereinafter also referred to as the working position).
  • the clamping unit 30 In a deactivation mode, the clamping unit 30 does not exert any constraint on the head 22 and allows the removal of the latter from the frame 21.
  • the clamping unit 30 constitutes a temporary connection interface, i.e. it allows a removable connection, between the head 22 and the frame 21.
  • Figures 1 and 2 are views respectively relating to a first and to a second possible embodiment of a machine 1 according to the invention. More precisely, the machine 1 is preferably used for processing the body of a blade intended for use, for instance, for the construction of a stage of a gas turbine. However, this is only a possible, and therefore not exclusive application of the machine 1 which could be used, for example, also for the finishing of surfaces of moulds or other workpieces which have surfaces with simple and/or double curvature.
  • the machine 1 comprises a CPU control unit (hereinafter simply referred to as CPU) which drives the first 10 and the second device 20 in such a way that the removal of material preferably takes place in a direction substantially normal to the three-dimensional surface 8.
  • CPU a CPU control unit
  • the CPU based on a theoretical model of the three-dimensional surface 8, calculates the path to be followed by the tool 15 (or the sensor) and simultaneously controls the frame 21 and the product 5 so that this path is followed with the required condition of orthogonality.
  • the control of the CPU is therefore carried out on the different degrees of freedom (or axes) assigned to the frame 21 and to the workpiece 5.
  • the first device 10 configures two degrees of freedom for the workpiece 5, while the second device 20, in particular the support and movement assembly 25, configures four degrees of freedom for the frame 21 or for the head 22 connected to it by means of the clamping unit 30.
  • the CPU exercises control over 6 different axes.
  • the four degrees of freedom conferred to the head 22 correspond to three translation movements along three corresponding translation axes X, Y, Z and to a rotation movement around a first rotation axis (reference A).
  • the two degrees of freedom conferred to the workpiece 5 correspond instead to a rotation movement around a second rotation axis (reference B) and a further rotation movement around a third rotation axis (reference C), orthogonal to said second rotation axis.
  • the CPU drives the movement of the frame 21 along the translation axes X, Y, Z and around the first rotation axis A which preferably corresponds to one of the translation axes X, Y, Z.
  • the CPU drives the rotation of the workpiece 5 around the second rotation axis B and the third rotation axis C, orthogonal to each other, preferably selected in such a way as to be each parallel to a plane defined by two translation axes (for example the X-Y plane for the rotation axis B and the X-Z plane for the rotation axis C).
  • the X, Y are indicated in figure 1 .
  • the frame 21 supports a head 22 whose configuration is best shown in Figure 6 .
  • the configuration of the frame 21 is instead better shown in Figure 3 .
  • the frame 21 has a substantially L-shaped configuration defined by a first plate 211 and by a second plate 212 which extend on planes orthogonal to each other.
  • the two plates 211, 212 are stably connected to each other.
  • reinforcing plates 213 are arranged between the two plates 211, 212 which also contribute to maintaining the perpendicular condition between the two plates 211, 212.
  • the first plate 211 is connected to the support and movement assembly 25 which configures the movement axes of the frame 21.
  • the head 22 is connected, by means of the clamping unit 30, to the second plate 212 on the internal side 212A thereof or on the side that forms a 90° angle with a corresponding side of the first plate 211.
  • Figure 5 shows a possible embodiment of an operating head 22 which comprises a base plate 220 in which a first portion 220A and a second portion 220B are identified, wherein the second portion 220 extends from the first portion 220A so as to impart to the base plate 220 a substantially L-shaped configuration.
  • the base plate 220 comprises an internal surface 227A facing the clamping unit 30 (i.e. the internal side 212A of the second plate 212 of the frame 21) and an external surface 227B opposite to the internal surface 227A.
  • a support element 225 is installed on said external surface 227B, projecting from the second portion 220B.
  • the support element 225 supports or defines a working point for a tool 15.
  • the support element 225 may support a three-dimensional surface control sensor. Such a sensor, for example, may be of the laser type to perform a scan of the three-dimensional surface.
  • the tool 15 is an abrasive wheel, but alternatively it could be in the form of an abrasive belt.
  • rotation means 16-18-17-19 configured to carry out the rotation of the tool 15.
  • these means comprise a sliding roller 19 which configures the axis around which the abrasive wheel rotates.
  • Said sliding roller 19 is rotatably installed at the cantilevered end 225A of the support element 225 and is integral in rotation with the abrasive wheel. Therefore, in this embodiment, the support element 225 supports the tool in proximity to its cantilevered end 225A.
  • the rotation means further comprise a driving pulley 18 driven by a motor 55 and a transmission belt 16 wound at least between the sliding roller 19 and the driving pulley 18.
  • the driving pulley 18 is installed on the first portion 220A, i.e. in a distal position from the cantilevered end 225A of the support element 225.
  • the driving pulley 18 is driven by an electric motor 55.
  • the tool consists of an abrasive belt
  • the latter is wound between the driving pulley 18 and the sliding roller 19 in a manner similar to that provided for the transmission belt 16.
  • the sliding element 19, and therefore the support element 225 define the working point of the abrasive belt (tool) in proximity to the cantilevered end 225A.
  • the head 22 could support a sensor for controlling (reading) the three-dimensional surface 8 of the workpiece.
  • This sensor could be installed on the external surface 227B or placed on the support element 225.
  • the head 22 could support a nozzle for shot peening the three-dimensional surface 8 of the workpiece 5.
  • the clamping unit 30 is constrained to the frame 21 and comprises first connection elements 31 configured to couple with second connection elements 32 integral with the head 22.
  • the working position of the head 22 is defined following the coupling between each of the first connection elements 31 with a corresponding one of said second connection elements 32.
  • the clamping unit 30 when activated, firmly constrains the first connection elements 31 to the second connection elements 32. On the contrary, when the clamping unit 30 is deactivated, this constraint is lost so as to allow the removal of the head 22 and its replacement with another one provided with the tool necessary for the subsequent machining.
  • the first connection elements 31 are seats inside which the second connection elements 32 in the form of pins may be inserted.
  • the clamping unit 30 comprises clamp closing means, preferably pneumatically operated, configured to act on said pins when they are inserted into the corresponding seats.
  • these closing means maintain the connection between the two parts (head 22 and frame 21) preventing any freedom of movement of the pins with respect to the corresponding seats.
  • the head 22 may be removed by means of a translation movement which frees the pins from the corresponding seats.
  • the clamping unit 30 is installed on the internal side 212A of the second plate 212 of the frame 21.
  • the clamping unit 30 comprises four first connection elements 31 or four seats each for receiving a corresponding pin integral with the operating head 22.
  • the position of the clamping unit 30 is fixed, and therefore invariable, with respect to the frame 21. Therefore, also the first connection elements 31 maintain a fixed position with respect to the frame 21. This ensures the repeatability of the connection and positioning of the head 22.
  • the CPU can immediately determine the position of the tool 15B and consider this position as the machine zero position for the calculation of the trajectories.
  • the second connection elements 32 therefore comprise four pins which emerge from the internal surface 227A of the base plate 220 of the operating head 22.
  • the pins are defined on the surface opposite to that (external surface 227B) on which the rotation means 17-18-25-19 are installed which allow the rotation of the tool 15.
  • connection elements 32 emerge from a region of the internal surface 227A corresponding to the second portion 220B.
  • the machine comprises a containment casing (not shown in the figures) removably connected to the frame 21 and adapted to contain the operating head 22.
  • the rotation means of the tool 15 are driven by a motor 55 (electrically operated) installed on the frame 21, preferably on the external side 212B of the second plate 212 (as visible in Figure 4 ).
  • a motor 55 electrically operated
  • the driving pulley 18 is connected to an output of the motor 55 through suitable coupling means.
  • the connection of the driving pulley 18 to the motor 55 is simultaneous to the connection of the head 22 to the frame 21. The removal of the two connections at issue will therefore also be simultaneous.
  • the motor necessary for the rotation of the tool could be installed directly on the head, preferably on the external surface 227B where the rotation means 18-17-19-25 are installed.
  • the frame 21 is configured to support a first operating head 22-A and a second operating head 22-B.
  • the two operating heads 22-A, 22-B have substantially the same configuration, differing in the structure and/or properties of the tool in terms of abrasive capacity.
  • the two operating heads 22-A, 22-B will preferably be provided with different tools 15-A, 15-B or in any case configured to achieve different degrees of finishing on the three-dimensional surface 8 of the workpiece.
  • each of the two operating heads 22-A, 22-B supports an abrasive wheel having a different degree from that of the other head.
  • one or both tools could consist of abrasive belts.
  • one of the two heads could support a control tool or a nozzle for surface shot peening of the workpiece.
  • a first clamping unit 30-A and a second clamping unit 30-B will be provided to allow the removable connection of the first operating head 22-A and the second operating head 22-B, respectively.
  • the two clamping units 30-A, 30-B are installed on the internal side 212A of the second plate 212 of the frame 21 in a substantially specular position with respect to a reference plane containing the first rotation axis A of the frame 21 defined above.
  • the two clamping units 30A, 30B may advantageously have the same configuration.
  • a first motor and a second motor (not shown in Figures 6 and 7 ) will be provided to allow rotation of a first tool 15-A installed on the first operating head 22-A and of a second tool 15-B installed on the second head 22-B, respectively.
  • the motors may be installed on the frame 21 or on the corresponding operating head 22-A, 22-B.
  • each of the two operating heads 22-A, 22-B comprises a plurality of pins 32-A, 32-B each of which is intended to be inserted inside a corresponding seat 31-A, 31-B defined by the corresponding clamping unit 30-A, 30-B.
  • the machine 1 comprises also a reading sensor 88 for detecting the profile of the three-dimensional surface 8 of the workpiece 5.
  • a reading sensor 88 is used, for example, to scan the three-dimensional surface 8 of the workpiece in order to reconstruct a "real model of the three-dimensional surface".
  • the sensor is of the laser type and is installed so as to emerge on the external side 212B of the second plate 212. Therefore, depending on the operation to be carried out, finishing or reading of the surface, the CPU may suitably rotate the frame 21 around the first rotation axis A so as to make the tool 15 installed on the head 22 or the sensor 88 operative.
  • control of the operating status of the clamping unit 30 may be carried out directly by the CPU or by the same unit that controls the first device 10 and the second device 20.
  • the use of the clamping unit 30 advantageously allows automating the tool change operations, using for this purpose a manipulator (or a robotic arm) whose operation will be synchronized with that of the machine 1.
  • the CPU will drive the frame 21 so that it reaches a tool change position, whereby the head 22 to be removed will be oriented in a certain way.
  • the manipulator may hook the head 22 and, following the deactivation of the clamping unit, remove it from the frame 21. Subsequently, after having deposited the removed head 22, the same manipulator may couple another operating head to the clamping unit 30 which, once activated, will block the same head to the frame 21.
  • the present invention therefore also relates to an automated system according to claim 19 for manufacturing a workpiece, in particular a turbine or compressor blade, comprising a machine 1 according to the above and a manipulator for removing the operating head from the frame 21 and preferably for connecting another operating head to the same frame 21.
  • the technical solutions adopted for the finishing machine allow fully fulfilling the set tasks and objects.
  • the machine allows considerably speeding up tool change operations and at the same time makes the finishing operation feasible in a completely automated production line.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Machine Tool Units (AREA)

Claims (19)

  1. Machine (1) de finition et/ou de contrôle d'une surface tridimensionnelle (8) d'une pièce (5), comprenant un premier dispositif (10) pour supporter ladite pièce (5) et un second dispositif (20) pour déplacer au moins un outil de finition (15) et/ou un capteur de contrôle de ladite surface tridimensionnelle (8), dans laquelle ledit second dispositif (20) comprend une unité de support et de déplacement (25) d'un cadre de support de tête (21), dans laquelle ledit cadre de support de tête (21) supporte une tête opérationnelle (22) sur laquelle ledit outil (15) et/ou ledit capteur est installé et dans laquelle ladite unité de support et de déplacement (25) configure une pluralité de degrés de liberté pour ledit cadre de support de tête (21),
    caractérisé en ce que ladite tête opérationnelle (22) est connectée audit cadre de support de tête (21) au moyen d'une unité de serrage (30) qui, dans un mode d'activation, bloque ladite tête opérationnelle (22) par rapport audit cadre de support de tête (21) dans une position prédéterminée et, dans un mode de désactivation, permet le retrait de ladite tête opérationnelle (22) à partir de ladite position prédéterminée.
  2. Machine (1) selon la revendication 1, dans laquelle ladite unité de serrage (30) est solidaire du cadre de support de tête (21) et comprend une pluralité de premiers éléments de connexion (31) configurés pour se coupler avec des seconds éléments de connexion (32) solidaires de ladite tête opérationnelle (22), dans laquelle ladite position préétablie est définie à la suite du couplage de chacun des premiers éléments de connexion (31) avec l'un correspondant desdits seconds éléments de connexion (32), dans laquelle ladite unité de serrage (30), lorsqu'elle est activée, contraint lesdits premiers éléments de connexion (31) par rapport auxdits seconds éléments de connexion (32) et dans laquelle ladite unité de serrage (30), lorsqu'elle est désactivée, libère lesdits seconds éléments de connexion (32) de manière à permettre la séparation de ladite tête opérationnelle (22) à partir dudit cadre de support de tête (21).
  3. Machine (1) selon la revendication 2, dans laquelle chacun desdits premiers éléments de connexion (31) est défini par un siège à l'intérieur duquel l'un correspondant desdits éléments de connexion (32), présentant une forme de broche, est inséré et dans laquelle ladite unité de serrage (30) comprend des moyens de fermeture par serrage configurés pour bloquer lesdits seconds éléments de connexion (32), présentant une forme de broche, lorsqu'ils sont insérés dans les sièges correspondants définissant lesdits premiers éléments de connexion (31), dans laquelle, lorsque ladite unité de serrage (30) est activée, lesdits moyens de fermeture par serrage empêchent toute liberté de déplacement desdites broches par rapport aux sièges correspondants et dans laquelle, lorsque ladite unité de serrage (30) est désactivée, lesdits moyens de fermeture libèrent lesdites broches de manière à permettre le retrait de ladite tête opérationnelle (22) par un déplacement de translation à la suite duquel lesdites broches sortent des sièges correspondants.
  4. Machine (1) selon l'une quelconque des revendications 1 à 3, dans laquelle ledit cadre de support de tête (21) comprend une première plaque (211) et une seconde plaque (212) connectées entre elles de sorte que les deux plaques (211, 212) se développent sur des plans sensiblement perpendiculaires, dans laquelle ladite première plaque (211) est connectée à ladite unité de support et de déplacement (25) et dans laquelle ladite tête opérationnelle (22) est connectée, par l'intermédiaire de ladite unité de serrage (30), à un côté interne (212A) de ladite seconde plaque (212).
  5. Machine (1) selon l'une quelconque des revendications 1 à 4, dans laquelle ladite tête opérationnelle (22) comprend une plaque de base (220) qui inclut une première partie (220A) et une seconde partie (220B) qui se développe à partir de la première partie (220A) donnant une configuration sensiblement en forme de L à ladite plaque de base (220), dans laquelle ladite plaque de base (220) comprend une surface interne (227A) faisant face à ladite unité de serrage (30) et une surface externe (227B) opposée à ladite surface interne (227B), dans laquelle sur ladite surface externe (227B) est installé un élément de support (225), faisant saillie depuis ladite seconde partie (220B), dans laquelle il supporte ou définit un point de travail pour ledit outil (15) ou pour ledit capteur de contrôle.
  6. Machine (1) selon la revendication 5 lorsqu'elle dépend de la revendication 3, dans laquelle lesdits seconds éléments de connexion (32) se développent sous la forme de broches à partir de ladite surface interne (227A) de ladite plaque de base (200), de préférence à partir d'une région correspondant à ladite seconde partie (220B).
  7. Machine (1) selon la revendication 5 ou 6, dans laquelle sur ladite surface externe (227B) sont installés des moyens de rotation (18-16-17-19) qui permettent la rotation dudit outil (15), dans laquelle ledit outil (15) est sous la forme d'une bande abrasive ou d'une roue abrasive.
  8. Machine (1) selon la revendication 7, dans laquelle ledit outil (15) est une roue abrasive et dans laquelle lesdits moyens de rotation comprennent :
    - un rouleau (19) pivoté à proximité de l'extrémité en porte-à-faux (225A) dudit élément de support (225), ledit rouleau (19) définissant l'axe de rotation (101) de ladite roue abrasive ;
    - une poulie motrice (18) entraînée par un moteur (55) ;
    - une courroie de transmission (16) enroulée au moins entre ledit rouleau (19) et ladite poulie motrice (18).
  9. Machine (1) selon la revendication 7, dans laquelle ledit outil est une bande abrasive et dans laquelle lesdits moyens de rotation comprennent un rouleau (19) pivoté à proximité de l'extrémité en porte-à-faux (225A) dudit élément de support (225) et une poulie motrice (18) entraînée par un moteur (55), dans laquelle ladite bande abrasive est enroulée au moins entre ledit rouleau (19) et ladite poulie motrice (18).
  10. Machine (1) selon la revendication 8 ou 9, dans laquelle ladite poulie motrice (18) est entraînée par l'intermédiaire d'un moteur (55) installé sur ledit cadre (21) et dans laquelle, lorsque ladite tête opérationnelle (22) est connectée à ladite unité de serrage (30), ladite poulie motrice (18) est reliée à une sortie dudit moteur (55) par l'intermédiaire de moyens de couplage.
  11. Machine (1) selon la revendication 8 ou 9, dans laquelle ladite poulie motrice (18) est entraînée par l'intermédiaire d'un moteur (55) installé sur ladite surface externe (227B) de ladite plaque de base (220) de ladite tête opérationnelle (22).
  12. Machine (1) selon l'une quelconque des revendications 1 à 11, dans laquelle ledit cadre de support de tête (21) supporte une première tête opérationnelle (22-A) et une seconde tête opérationnelle (22-B) comprenant chacune un outil de finition (15-A, 15-B), dans laquelle ladite première tête opérationnelle (22-A) et ladite seconde tête opérationnelle (22-B) sont connectées audit cadre de support de tête (21), respectivement par l'intermédiaire d'une première unité de serrage (30-A) et d'une seconde unité de serrage (30-B).
  13. Machine (1) selon la revendication 9 lorsqu'elle dépend de l'une quelconque des revendications 4 à 12, dans laquelle ladite première unité de serrage (30-A) et ladite seconde unité de serrage (30-B) sont installées sur ledit côté intérieur (212A) de ladite seconde plaque (212) dudit cadre de support de tête (21) dans une position sensiblement miroir par rapport à un plan de référence contenant un axe de rotation (A) dudit cadre de support de tête (21).
  14. Machine (1) selon l'une quelconque des revendications 1 à 13, dans laquelle ledit premier dispositif (10) configure deux degrés de liberté pour ladite pièce (5) tandis que ledit second dispositif (20) configure quatre degrés de liberté pour ledit cadre de support de tête (21).
  15. Machine (1) selon la revendication 14, dans laquelle lesdits quatre degrés de liberté conférés à ladite tête opérationnelle (22) correspondent à trois déplacements de translation selon trois axes de translation correspondants X, Y, Z et à un déplacement de rotation autour d'un premier axe de rotation (A), et dans laquelle lesdits deux degrés de liberté conférés à la pièce fabriquée (5) correspondent à la place à un déplacement de rotation autour d'un deuxième axe de rotation (B) et à un déplacement de rotation supplémentaire autour d'un troisième axe de rotation (C), orthogonal audit deuxième axe de rotation (B).
  16. Machine (1) selon l'une quelconque des revendications 1 à 15, dans laquelle ladite machine comprend une unité de commande (CPU) qui entraîne ledit premier (10) et ledit second dispositif (20), dans laquelle ladite unité de serrage (30) permet à ladite unité de commande (CPU) de déterminer de manière répétée la position zéro de la machine afin de calculer les trajectoires dudit outil et/ou dudit capteur de commande pour des opérations de finition et/ou de contrôle ultérieures de ladite surface tridimensionnelle (8) de ladite pièce (5).
  17. Machine (1) selon l'une quelconque des revendications 1 à 16, dans laquelle ledit cadre de support de tête (21) supporte une tête opérationnelle (22) sur laquelle est installée une buse de grenaillage de ladite surface tridimensionnelle (8) de ladite pièce (5).
  18. Machine (1) selon l'une quelconque des revendications 4 à 17, dans laquelle ledit cadre de support de tête (21) supporte un capteur de détection (88) pour détecter le profil de ladite surface tridimensionnelle (8) de ladite pièce (5), dans laquelle ledit capteur (88) est du type laser et est installé de manière à émerger à partir dudit côté externe (212B) de ladite seconde plaque (212) dudit cadre de support de tête (21).
  19. Système automatisé pour la construction d'une pièce (5), en particulier d'une aube de turbine ou de compresseur, caractérisé en ce qu'il comprend :
    - une machine (1) selon l'une quelconque des revendications 1 à 18, et
    - un manipulateur pour retirer ladite tête opérationnelle (22) dudit cadre de support de tête (21) à la suite de la désactivation de ladite unité de serrage (30).
EP20851345.7A 2019-12-30 2020-12-23 Machine de finition et/ou de contrôle d'une surface tridimensionnelle d'une pièce et système comprenant une telle machine Active EP4084926B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102019000025786A IT201900025786A1 (it) 2019-12-30 2019-12-30 Macchina per la finitura e/o il controllo di una superficie tridimensionale di un manufatto e impianto comprendente tale macchina.
PCT/IB2020/062404 WO2021137117A1 (fr) 2019-12-30 2020-12-23 Machine de finition et/ou de contrôle d'une surface tridimensionnelle d'une pièce et système comprenant une telle machine

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EP4084926A1 EP4084926A1 (fr) 2022-11-09
EP4084926B1 true EP4084926B1 (fr) 2024-01-31

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EP (1) EP4084926B1 (fr)
CN (1) CN115279548A (fr)
ES (1) ES2975507T3 (fr)
IT (1) IT201900025786A1 (fr)
PL (1) PL4084926T3 (fr)
WO (1) WO2021137117A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5503589A (en) * 1994-06-17 1996-04-02 Wikle; Kenneth C. Apparatus and method for contour grinding gas turbine blades
ITBG20070006A1 (it) * 2007-01-18 2008-07-19 Costanzo Perico Gruppo per la finitura di una superficie tridimensionale di un manufatto e macchina comprendente tale gruppo.

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IT201900025786A1 (it) 2021-06-30
PL4084926T3 (pl) 2024-08-05
WO2021137117A1 (fr) 2021-07-08
EP4084926A1 (fr) 2022-11-09
ES2975507T3 (es) 2024-07-08
CN115279548A (zh) 2022-11-01

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