EP3624987A1 - Procédé de mise en uvre d'un usinage par enlèvement de matière et dispositif d'usinage par enlèvement de matière d'un composant - Google Patents

Procédé de mise en uvre d'un usinage par enlèvement de matière et dispositif d'usinage par enlèvement de matière d'un composant

Info

Publication number
EP3624987A1
EP3624987A1 EP18733796.9A EP18733796A EP3624987A1 EP 3624987 A1 EP3624987 A1 EP 3624987A1 EP 18733796 A EP18733796 A EP 18733796A EP 3624987 A1 EP3624987 A1 EP 3624987A1
Authority
EP
European Patent Office
Prior art keywords
component
base body
held
measurement data
machining tool
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.)
Withdrawn
Application number
EP18733796.9A
Other languages
German (de)
English (en)
Inventor
Michael Clossen-Von Lanken Schulz
Stefan Obermayr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3624987A1 publication Critical patent/EP3624987A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/28—Grooving workpieces
    • B23C3/30—Milling straight grooves, e.g. keyways
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/28—Grooving workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
    • B23Q17/2233—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work for adjusting the tool relative to the workpiece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/005—Repairing methods or devices
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/401—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P6/00—Restoring or reconditioning objects
    • B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
    • B23P6/045—Repairing fractures or cracked metal parts or products, e.g. castings of turbine components, e.g. moving or stationary blades, rotors, etc.
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q9/00—Arrangements for supporting or guiding portable metal-working machines or apparatus
    • B23Q9/02—Arrangements for supporting or guiding portable metal-working machines or apparatus for securing machines or apparatus to workpieces, or other parts, of particular shape, e.g. to beams of particular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/10—Manufacture by removing material
    • F05D2230/14—Micromachining
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9013—Arrangements for scanning
    • G01N27/902—Arrangements for scanning by moving the sensors

Definitions

  • the invention relates to a method for carrying out a device and a device for material-removing, in particular machining a component, in particular within a groove provided in the component.
  • components are subject to high mechanical, chemical and thermal stresses, which can be associated with wear and destruction.
  • cracks occur due to the stress, which can greatly reduce the service life of the turbine rotor.
  • a milling device which comprises an elongate base body, adapted in its cross section to the cross section of a blade foot receiving groove to be machined, on which a milling tool is held.
  • the shape-adapted base body can be inserted into a Schaufelfußfactnut for processing and moved with slight play through them.
  • the milling tool which is in particular a milling finger, is held rotatably on the base body about a tool rotation axis.
  • the tool is arranged in a recess provided in the lower region of the main body, which recess is provided by a through-groove oriented perpendicular to its longitudinal extent.
  • the tool is held so pivotable about a pivot axis extending perpendicular to the tool axis of rotation, that the tool between a position in which it is completely received in the recess, and a position in which its tip and a predetermined amount away can be moved from the main body protrudes.
  • the main body is inserted into the groove and inserted slightly into it.
  • the milling tool is pivoted by its pivot axis so that it protrudes outwardly from the recess, wherein the desired degree of projecting, which corresponds to the depth of penetration of the tool into the component to be machined and thus the amount of removed material is set manually.
  • the milling tool is then rotated at its tool axis of rotation and a feed movement of the tool is realized by the
  • Body is moved by a user by hand through the Schaufelfußabilitynut to be processed.
  • a milled groove is formed along the blade root receiving groove with a constant cross section over its longitudinal extent.
  • the known milling device has been reinforced in principle to remove defects, in particular cracks in components, especially rotors in the area of Schaufelfußingnuten. With this, however, comparatively much material, in each case removed over the entire longitudinal extent of a Schaufelfuß techniquenut. Depending on the component geometry, at least in some sections there is little material available anyway, so that a comparatively large material removal may prove less advantageous.
  • the device and The process, in particular machining contour to be produced which can be calculated and in turn can be examined by a method for non-destructive testing.
  • This object is achieved by a method for carrying out a material-removing, in particular machining, a component, in particular within a groove provided in the component, in which spatially resolved measurement data which contains information about defects, in particular cracks in the component, are provided, and a material-removing, in particular machining of the component with at least one motorized movable, in particular moved motorized and / or pivotally mounted machining tool and is preferably controlled automatically depending on the measurement data provided, at which positions on the component, the at least one machining tool for material removal in the area existing errors are brought into engagement with the component, and in particular is preferably automatically controlled as a function of the measurement data provided, how deep the at least one machining tool penetrates into the component is driven.
  • the basic idea of the present invention is to use location-dependent measurement data on defects present in a component, such as cracks for targeted mechanical removal for minimizing the material removed, for defect removal.
  • a fault-finding-dependent control of at least one material-removing tool is carried out for the removal according to findings of existing faults.
  • it is preferably automatically controlled as a function of the spatially resolved measurement data on component defects at which positions on a component to be machined at least one machining tool for material removal is engaged and in particular how deep the machining tool is driven into the component.
  • the measured data are preferably read into a control device connected to the at least one machining tool, and the control device controls the at least one machining tool as a function of this.
  • the orientation of the at least one tool is preferred while it varies along the component to be machined by the control device, depending on where specific errors are present. For example, if there is an edit to remove
  • Errors in particular cracks in the region of a groove, in particular Schaufelfußingnut, according to the invention on the basis of provided measurement data on existing errors, for example on the basis of eddy current data, the processing depth in particular in the longitudinal direction of the groove in a turbine blade so in the axial direction varies and indeed in Dependency of existing errors.
  • a motorized machining tool is used, the position of which is motorized in order to vary the machining depth according to the actual fault finding - and not by hand - a calculable machining contour is obtained.
  • a working contour calculated, for example, using the finite element method can be used for lifetime analysis.
  • a material-removing machining takes place within a groove, in particular within a blade root receiving groove of a turbomachine and preferably measurement data are provided which comprise spatially resolved information about defects, in particular cracks in the component in the region of the groove, at least with respect to the longitudinal extension direction of the groove , And the main body in the longitudinal direction of the groove method.
  • the base body used is preferably characterized by a cross section which is adapted to the cross section of the groove, in particular the blade root receiving groove, as is evident from DE 10 2015 222 529 A1.
  • the at least one machining tool is pivotably supported on the base body about at least one pivot axis, and in particular is controlled as a function of the measurement data provided, at which positions on the component and to what extent, in particular at what angle the at least one Machining tool is pivoted.
  • the at least machining tool on the base body along at least one particular linear travel path can be provided that the at least machining tool on the base body along at least one particular linear travel path
  • the at least one tool is kept movable, and in particular is controlled depending on the provided measurement data, at which positions on the component and to what extent the at least one machining tool is moved along the trajectory.
  • the at least one tool is held in particular adjustable in height on the base body.
  • a further embodiment of the method according to the invention is also characterized in that a base body is moved along the component, on which at least one test probe for non-destructive testing of the component is held, and measurement data are recorded using the at least one test probe held on the base body which provide spatially resolved information about faults, in particular cracks in the component, and the acquired measurement data for the control of the at least one processing tool held on the base body.
  • test probe or preferably the test probes are preferably arranged on the base body such that in a method of the base body along a predetermined direction of travel first a non-destructive examination of the component by means of at least one test probe and followed by a mechanical processing with the at least one machining tool ,
  • the base body provided with test probe (s) or tool (s) to be moved twice along a component, in particular twice through a groove, once to generate the measurement data on existing defects and once for mechanical processing for error removal. This offers the advantage that the measurement data acquisition is not disturbed by vibrations or the like possibly occurring during mechanical processing.
  • At least substantially the same shape having basic body along the component process wherein at the first along the first component body first body at least one test probe for non-destructive testing of the component is held, and recorded using the at least one held on the first body test probe the measurement data be, which spatially resolved information about errors, in particular cracks in the component include, and wherein the at least one machining tool is then held motorized movable along the component second basic body, and the measured data using the at least one held on the first base probe be provided for the control of the at least one held on the second body machining tool.
  • a further embodiment is characterized in that the measurement data provided include the depth of defects present in the component to be processed, in particular cracks corresponding depth values and the spatial coordinates respectively associated with the depth values which indicate the respective error position.
  • the depth values may in particular be amplitude values, which is the case, for example, when the measurement data are those obtained by a non-destructive testing of the component by means of eddy current.
  • the measured data include depth values, it is preferably provided that the at least one machining tool is brought into contact with the component at positions in which, according to the measured data, a depth value is present above a predetermined limit value. Alternatively or additionally, it can then be provided that the at least one machining tool is in each case driven into the component by a depth which depends on the value of the depth value.
  • a further advantageous embodiment is characterized in that, on the basis of the provided measurement data, at least one envelope is calculated, which contains a plurality of Preferably includes all existing according to the measurement data error, in particular with the respective corresponding error depth.
  • the at least one processing tool is then preferably controlled such that one of the at least one envelope corresponding to material removal is achieved. This procedure allows a material removal optimally adapted to an actual defect finding as well as obtaining a contour that can be checked again for good. It is possible to calculate a plurality of envelopes, in particular belonging to different groove depths, and to achieve a material removal corresponding thereto.
  • the position determination is particularly preferably carried out using at least one Weggeber Nur, which is held in particular to the main body or are.
  • one or more pathway device (s) is used.
  • These preferably have in a manner known per se a movable, in particular rotatable, path detection body mounted on the base body and in particular the further base body, for example in the form of a roller, which runs when the base body or further base body is moved along a component the travel distance is detectable.
  • a device for material-removing in particular machining a component, in particular within a groove provided in the component, comprising
  • At least one material-removing, in particular machining, machining tool which is attached to the base body torarra movable, in particular motorized is moved and / or pivotally held,
  • control device which is connected to the at least one machining tool and in particular the at least one Weggeber
  • the at least one machining tool and in particular the at least one Weggeber observed preferably via cable or connectable and configured and configured to receive spatially resolved measurement data, the information about errors, in particular cracks in a component to be machined, and the to control at least one machining tool depending on the measured data.
  • a configured in this way device is particularly suitable for carrying out the method according to the invention.
  • the control device comprises at least one in particular programmable microcontroller or is formed by such a microcontroller. If at least one microcontroller is provided, it preferably has a circuit board and / or a microprocessor and / or a plurality of input / output connections. Most preferably, the microcontroller is designed as an electrician board or includes such. Programmable microcontrollers sold under the brand name of chicken are previously known from the prior art. These include in particular a printed circuit board with a microprocessor and input / output pins.
  • the control device can be arranged within the preferably hollow base body. Alternatively, the control can be done through a computer
  • At least one test probe for non-destructive testing of a component is provided which is provided on the main body or on a further at least substantially the same shape as the main body further base body on which at least one is held further Weggeber worn for determining location coordinates, is arranged.
  • the control device is then preferably connected to the at least one test probe and configured to control the at least one machining tool as a function of measured data acquired with the at least one test probe.
  • a plurality of probes forming a test probe array is held on the main body or the further main body.
  • the Weggeber painen are held on the base body for determining location coordinates, and preferably the Weggeber painen each have a Weger chargeds phenomenon which is held on the base body movable, in particular rotatable and arranged such that it with the surface a device to be examined is brought into contact, wherein each of the base body held Weggeber immunity is adapted to output in response to that their Weger writtens stresses moved relative to the base body, a motion signal containing information about the instantaneous speed of movement of the path detection body relative to contains the base body or from which such is derivable, and preferably an arranged in particular in the body Weggeberausnceaku is provided, which verbu with the held on the main body Weggeber immunityen and is configured and configured to receive motion signals from the encoders during operation, and to determine continuously or at predetermined time intervals the path detection body of which encoder held on the body is moved fastest, and in particular the motion signal of the encoder with the fastest moving pathfinder body.
  • the further, second basic body can analogously also characterized by at least two Weggebe listeningen.
  • at least two Weggeber issueden for determining location coordinates are held on the further base body, and preferably the Weggeber immunityen each have a Weger chargeds phenomenon which is held on the other body movable, in particular rotatable and arranged such that it with the Surface of a component to be examined is brought into contact, wherein each held on the further base body Weggeber immunity is adapted to output in response to that their Weger writtens manipulate is moved relative to the other body, a motion signal containing information about the instantaneous speed of movement of the Contains path detection body relative to the other base body or from which such is derivable, and preferably a arranged in particular in the further body Weggeberausense is provided, which with the on the Grundkör connected to held Weggeber pain
  • the Weggeberwertwertü comprises at least one particular programmable microcontroller or is formed by such. If at least one microcontroller is provided, it preferably has a circuit board and / or a microprocessor and / or a plurality of input / output connections.
  • the microcontroller is designed as an electrician board or includes such.
  • the position encoder evaluation unit is located within the preferably hollow hollow space.
  • formed basic body or within the preferably hollow formed further body is arranged.
  • the base body preferably has a cross section which is substantially constant along its longitudinal extension.
  • the main body is characterized by a fir tree or swallow or tea or hammerhead shaped cross section. Does the device include one
  • the other body can also be characterized by the above features, each alone or in combination.
  • the at least one machining tool is pivotable about a pivot axis and / or held along a preferably linear trajectory movable on the base body and in particular the control device is designed and configured to the at least one machining tool depending on the provided measurement data about the pivot axis to pivot and / or along the trajectory to process.
  • control device is designed and set up to carry out the method according to the invention.
  • the machining contours resulting from the post-processing according to the invention are characterized by the fact that, according to the invention, material is always removed only at those axial positions at which defects are actually present due to a cross section which is not constant in the axial direction.
  • the test probe or test probes are held resiliently on the main body or further main body in such a way that they move outwards from the main body
  • Protrude base body and towards the main body against a spring force in these are movable.
  • the resilient mounting ensures that the test probes are always in contact with the surface of the processing contour even when checking machining contours with a variable cross section, while the main body travels along the component to be machined, in particular by a (blade root) becomes.
  • spring-loaded probes are used to examine a component which has already been mechanically machined according to the invention, its contour is preferably adapted to the contour of the milling tool used for the preceding machining.
  • the test probes can then nestle into the milled groove depending on the depth of cut and have minimal, in the best case no distance to the surface to be measured.
  • a basic body is used for the renewed inspection of an already processed component, which has test probes targeted at those locations which are known to be particularly stressed. In this way it is also possible to record particularly good remaining defects, in particular cracks.
  • a base body is particularly preferably used on which test probes are attached to those
  • Figure 1 is a schematic representation of a device for milling according to an embodiment of the present invention, the base body is inserted into a groove of a component to be machined;
  • Figure 2 is a side view of the device shown in Figure 1;
  • FIG. 3 is an enlarged schematic representation of one of the eddy current test probes held on the main body of FIG.
  • FIG. 4 shows the coil main body of the eddy current
  • FIG. 5 shows a diagram with the TTL signals of the encoders of the device from FIG. 1 and the TTL signal output by the encoder-evaluation unit of the device,
  • FIG. 6 is a schematic representation of a first basic body provided with an eddy-current probe array of a second embodiment of a device according to the invention.
  • FIG. 7 is a schematic side view of a second basic body provided with a milling tool of the second embodiment of the device according to the invention.
  • Figure 8 is a schematic sectional view of the
  • Inner wall of an open basic body with spring-loaded test probes. 1 shows a schematic perspective view of a first embodiment of a device according to the invention, which is designed to carry out a milling operation within a Schaufelfußingnut 1 only partially shown in Figure 1 rotor 2 a turbomachine, in which a side wall of the Schaufelingnut 1 defining rotor claw is machined.
  • the blade foot-receiving grooves 1 of the rotor 2 are of identical design and, in the present case, have a cross-section which is constant along their longitudinal extent and has a fir-tree-like cross-section.
  • the illustrated embodiment of the device according to the invention comprises as main components a hollow main body 4 made of plastic, on which a plurality of vortex flow probes 5, which form a probe array 6, is held, as well as a likewise held on the base 4 milling tool 7, which is formed in the present case by a milling cutter.
  • a side view of the base body 4 with test probe array 6 and milling tool 7 can be seen in FIG.
  • the main body 4 is elongated and has along its longitudinal extent a substantially constant cross section, which is adapted to the fir-tree-shaped cross section of the Schaufelfußitnuten 1. Accordingly, this can be inserted into a Schaufelfuß techniquenut 1 and moved with slight play by this, wherein projections 8 of the base body 4, which extend along the longitudinal extension of the base body 4 and perpendicular to
  • a recess 12 in the form of a continuous groove is provided in the longitudinal direction.
  • the milling tool 7 which is rotatable about a tool axis of rotation 13 to a pivotally extending perpendicular to the tool axis of rotation 13 pivot axis 14 held such pivotable that the milling tool 7 between a position in which it is completely received in the recess 12, and a Position in which its tip protrudes by a predetermined amount away from the body 4, as shown for example in Figure 1, can be moved.
  • the milling tool 7 is further motorized height adjustable held on the base body 4, can be moved concretely parallel to the pivot axis 14 up and down.
  • the arrangement is designed accordingly, which is not recognizable in the simplified figures. Both the pivoting movement and the height adjustment take place by way of motorized motors which are not recognizable in the figures and which are arranged within the basic body 4 or within a tool housing 15 assigned to the milling tool 7.
  • the test probes 5, which are also held on the base body 4, are eddy current test probes in the exemplary embodiment shown. These each sit in a corresponding bore (cf., in particular, FIG. 2) in the hollow main body 4 provided through hole.
  • eddy current probes 5 can be seen in an enlarged view of Figure 3.
  • Each of the eddy current probes comprises a coil base 16, which is produced generatively by the SLS (Selective Laser Sintering) method and consists of a plastic material.
  • a coil main body 16 can be seen in an enlarged schematic representation of Figure 4.
  • the coil main body 16 has a winding head 17, which defines a longitudinal axis 18 of the coil base body 16 and in its outer surface two circumferential grooves 19 are formed, each extending along the entire circumference of the winding head 17 about a winding core 20, wherein the circumferential grooves 19 intersect at the top and at the bottom of the winding head 17 each at the longitudinal axis position at an angle of 90 °.
  • a coil wire 21 is wound in the manner of a cross winding.
  • the Spulengroundkorper 16 receives a structure with a central winding core 20 around which the coil wire 21 is laid in the manner of a cross winding, and four retaining webs 22, 23, 24, 25 which extend in the longitudinal direction and both in Direction of the two axial end portions of the winding head 17, as well as in the radial direction over the winding core 20 protrude.
  • the mutually diametrically opposite holding webs 22, 23, 24, 25 are formed corresponding to each other, i. they have the same cross-section and the same external shape.
  • the windings of the eddy current probes 5 are characterized by a high number of turns and winding density.
  • each test probe 5 has two electrical connection lugs 26 each.
  • Each of the plurality of eddy current probes 5 is over lines not shown in Figures 1 and 2, which are all bundled outside the main body 4 in the recognizable in Figures 1 and 2 cable 27, with a
  • a nondestructive testing of the rotor 2 in the area of the blade root receiving 1 by generating scanning signals and receiving measuring signals from the eddy current probes having the coil wires 22 in a manner known per se, while the base body 4 is guided by a user through a blade root receiving groove 1 to be examined and machined is pushed, for which a handle 29 is provided on the upper side of the base body 4.
  • the device according to the invention comprises two encoder devices 30 for determining location coordinates associated with detected measurement signals, which are arranged in the hollow base body 4 in the illustrated embodiment. These are shown in dashed lines in the figures.
  • Each of the two Weggeberer wornen 30 each includes a given here by a roller 31 Weger writtensharm which is rotatably supported about a rotation axis 32 on the base body 4, wherein the arrangement is such that the two axes of rotation 32 of the rollers 31 are oriented parallel to each other.
  • the rollers 31 are arranged on the base body 4 such that they project in sections from the base body 4 in order to be able to come into contact with the surface of the rotor claw 3 when the base body 4 is pushed by a user through it , Of the rollers 31, one is arranged on each side of the test probe array 6, specifically one on the left and one on the right.
  • Each of the two encoders 31 is configured to output a motion signal containing information about the instantaneous speed of movement of the roller 31 in response to its roller 31 being rotated such a derivable.
  • the encoder devices 31 are each designed to output as motion signal two TTL signals offset by 90 ° from each other, which is also referred to as a 2-phase TTL signal.
  • the encoders 30 comprise, in addition to the rollers 31, further mechanical and electrical components which are well known from the prior art and are not shown in the purely schematic figures.
  • the device further comprises an encoder encoders 33 arranged in the hollow body 4 in the form of a microcontroller, which in the illustrated embodiment is provided by an arduino board.
  • Both encoders 30 are connected to the path sensor evaluation unit 33 via lines extending within the main body 4 and not shown in the figures.
  • the Weggeberausstratician 33 is further connected via a likewise not visible in the figures line, which runs outside of the main body 4 together with the lines for the probes through the cable 27, connected to the eddy current device 28.
  • the encoder devices 30 transfer their motion signals to the position sensor evaluation unit 33, and this is designed and set up to determine at predetermined time intervals the roller 31 which position encoder device 30 currently being moved the fastest. Only the motion signal of the encoder device 30 with the currently fastest moving roller 31 is output to the eddy current device 28 for assignment to measurement signals detected by the eddy current probes 5.
  • the determination of which roller 31 is currently moving faster by means of a counter. If the role 31 of an encoder 30 is faster, the value is incremented in a global variable. Is the role of the others 31 faster, the same variable is counted down. Depending on the upper value is greater than 2 or less than -2, the corresponding faster Weggeber pain 30 is selected. So the
  • the counting interval is limited to the numbers between -2 and 2 here.
  • the additional condition that the two motion signals are equal to the counting of the counter in the illustrated embodiment the two 2-phase TTL signals are compared directly with each other, and only at phase coincidence is the encoder 30 with the faster roller 31 chosen, i. on the output of the motion signal this changed to the eddy current device 28. This should e.g. Avoid an unwanted change of signal direction, because the switching sequence with 2-phase TTL signals indicates the direction of rotation.
  • FIG. 1 a 2-phase TTL signal Tl having a first phase PI and a second phase P2 shifted by 90 ° relative thereto, the left-hand travel device 30 in FIGS. 1 and 2 and a 2-phase TTL signal T2 having a first one Phase P3 and a shifted by 90 ° relative to this second phase P4 of the right in Figure 1 and 2 Weggeber responded 30 over the distance s shown.
  • the roller 31 of the left-hand travel device 30 in FIGS. 1 and 2 whose 2-phase TTL signal T 1 is forwarded to the eddy current device 28 by the travel sensor evaluation unit 33, starts to move somewhat slower than that of the right-hand, which can be seen in the larger distance of adjacent rising and falling edges in the signal Tl.
  • Test probe arrays 6 location coordinates are available. Specifically, the roller 31 of the left-hand Weggeber worn 30 in Figures 1 and 2 is already set in motion before the first eddy current data can be obtained with the eddy current sketchsonden- array 6. Has the left roller 31 the
  • Schaufelfußingnut 1 on the figure 1 to the left side again is the role 31 of the right Weggeber coupled 30 still in contact with the wave claw 3 and provides location information to the recorded with the scholarsonden- array 6 measurement data.
  • the positions on the shaft claw 3 are controlled by the milling tool rotating around the tool rotation axis 13 for material removal
  • Milling tool 7 is driven into the shaft claw 3 at the respective positions.
  • the device For the control of the milling tool 7, the device comprises a control device 35, which is given in the described embodiment by another microcontroller in the form of another PCboardes and which is also located within the hollow body 4.
  • the control device 35 for the tool control is connected to the not visible in the figures motors for the height adjustment, for the pivoting about the pivot axis 14 and for the rotation of the milling tool 7 about the tool axis of rotation 13. Also connected to the control device 35 for the tool control with the eddy current device 28 to receive spatially resolved eddy current data from this and the Weggeber painen 31 for positioning the milling tool 7.
  • the control device 35 is - analogous to the Wegge- beraushongussi 33 - designed and configured to to determine which role 31 is currently moving fastest and always use the motion signal of the fastest moving roller 31 for the positioning of the Frästechnikezuges 7 relative to the base body 4.
  • the base body 4 For detection and subsequent removal of defects, such as cracks in the area of Schaufelfußingnut 1, the base body 4 by a user by hand through the
  • Shovel foot groove 1 moves.
  • the base body 4 is first of all moved through the groove 1 and meanwhile eddy current measurement data and associated location information are detected.
  • the main body 4 is then moved several more times through the groove 1 in order to remove all, in the measuring passage non-destructively detected defects by material removal.
  • the rotated milling tool 7 is only there by a targeted pivoting about the pivot axis 14 in the shaft claw 3 in the region of
  • the extent to which the milling tool 7 is swung out, ie how deep the machining is at the respective point, is controlled in dependence on the relative error depth resulting from the error measurement data. If there are errors, such as cracks at different groove depth positions, ie at different radial positions, the milling tool 7 for the several passes is automatically moved to different radial positions and in the respective radial position the milling machine train 7 is automated only at those axial positions the rotor 2 by a
  • a suction device is connected to the suction connection 36.
  • a computer such as a laptop as a control device can be used, which can then be connected to the motors via more in particular also bundled leaded out by a cable from the base body 4 lines.
  • Figures 6 and 7 show a second embodiment of an inventive device for milling a rotor in the range of Schaufelfußabilitynuten 1. The same components are provided with the same reference numerals.
  • the essential difference between the first and the second embodiment of the device according to the invention is that the means for non-destructive testing of Schaufelfußfactnut 1, so the eddy current sketchsonden- array 6 and the means for error removal, so the milling tool 7 spatially separated from each other, concretely two separate bodies 4 are held.
  • the second embodiment of the device according to the invention comprises two hollow base bodies 4, which are characterized by identical outer contours and, in the present case, are identical to the base body 4 of the device according to the first embodiment.
  • the eddy current probe array 6 is held on the one base body 4 (see FIG. 6) and the milling tool 7 on the other base body 4 (see FIG.
  • Both the first and the second base body 4 are - in analogy to the first embodiment - each provided with two Weggeber coupleden 30 each having a roller 31, so that the above already discussed advantages are given both for the measurement data acquisition and the milling.
  • both the Weggeberausticiantician 33 and the control device 35 is given to the tool control in each case by an electricianboard, which serves as Weggeberaustician 33
  • the main body 4 carrying the test probes 5 is - in analogy to the first embodiment - connected via the cable 27 to an eddy current device 28, not shown in the figure.
  • the first and the second basic body 4 are pulled successively through a blade root receiving groove 1 to be tested and, first, that basic body 4 which carries the test probe array 6 for detecting spatially resolved eddy current measured data and then the main body 4, which is provided with the milling tool 7, in order to remove material in the range of existing defects on the basis of the provided data, whereby according to the invention an automated control of the milling tool 7 takes place as a function of the eddy current measurement data.
  • the eddy current measurement data acquired with the test probes 5 and position data acquired with the encoder devices 30 are processed and computed in the illustrated embodiment on a computer not shown in the figures.
  • an envelope or several envelopes belonging to different groove depths is calculated, which include or include all detected errors.
  • the computer transmits the processed data to the control device 35 for the control of the milling tool 7 and this is controlled depending on the data, while the milling tool 7 carrying the base body 4 by hand by the Schaufelfußingnut 1 is pushed.
  • the control is carried out, for example, such that a material envelope corresponding to the envelope or the envelopes is achieved.
  • This procedure allows material removal optimally adapted to an actual defect finding as well as the preservation of a contour which can in turn be checked thoroughly.
  • an envelope curve calculation and corresponding subsequent removal of material can also be carried out in the context of the first exemplary embodiment described above with a base body.
  • the amount of removed material compared to the prior art is significantly reduced, in particular limited to one of the actually existing error finding possible minimum.
  • 7 computable machining contours are obtained in particular as a result of the motorized control of the milling tool. These are particularly suitable for carrying out a basis for a service life calculation. If detected defects were removed with a completely hand-held tool, there would be no certainty about the geometry of the resulting contours.
  • the machining contours resulting from the post-processing according to the invention are characterized by the fact that the material always only starts removed from those axial positions where there are actually errors, by a non-constant in the axial direction of cross-section.
  • the test probes 5 of the test probe array 6 on the main body 4 are held resiliently on the base body 4 in a manner similar to the spring pressure pieces 11 outwardly projecting from the base body 4 and in the direction of the main body 4 against a spring force in these are movable.
  • FIG. 8 shows an exemplary embodiment for the resilient mounting of the test probes 5 on a hollow main body 4.
  • the figure shows a sectional view of the inside of the wall 37 of an open hollow body 4, as can be seen in Figures 1 and 2 and 5 and 6.
  • the resilient mounting is realized via metallic spring elements 38, which are fixed at one end by means of a screw 39 on the wall 37 of the base body 4 inside and with its other end in each case a test probe 5, into which a line 34 opens, overlap on the back. If a force is exerted on a test probe 5 from the outside, this force is displaced inward against the then yielding spring element 38 within the receiving bore. If no force acts from outside, the test probe 5 protrudes from the base body 4 by a defined maximum value.
  • the eddy current probes 5 can be used in different milling depths.
  • the spring-mounted probes are preferably designed such that their contour is adapted to the contour of the milling tool 7 used in the context of a previous machining.
  • the test probes 5 can then nestle into the recessed groove and have minimal, in the best case, no distance from the surface to be measured. Since the test probes 5 are always in contact with the component surface even in the case of grooves with an axially variable depth of cut in the case of resilient mounting, they also provide reliable measurement data for existing components, even for components processed according to the invention

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

L'invention concerne un procédé de mise en œuvre d'un usinage par enlèvement de matière, en particulier par enlèvement de copeaux, d'un composant (2), en particulier à l'intérieur d'une rainure (1) disposée dans le composant, comportant les étapes suivante : la fourniture de données de mesure résolues localement, qui comportent des informations sur des défauts, en particulier des fissures dans le composant (2) ; et la mise en œuvre d'un usinage par enlèvement de matière, en particulier par enlèvement de copeaux, du composant (2), au moyen d'au moins un outil d'usinage (7) mobile de manière motorisée, en particulier monté mobile et/ou pivotant de manière motorisée et, en fonction des données de mesure fournies, de préférence commandé de manière automatisé, dans les positions dudit outil usinage sur le composant (2), l'au moins un outil d'usinage (7) par enlèvement de matière, dans la zone des défauts existants, est amené en prise avec le composant (2), et, en particulier en fonction des données de mesure fournies, de préférence il est commandé de manière automatisée à quelle profondeur l'au moins un outil d'usinage (7) est entraîné dans le composant (2). En outre, l'invention concerne un dispositif d'usinage par enlèvement de matière, en particulier par enlèvement de copeaux, d'un composant (2), en particulier à l'intérieur d'une rainure (1) disposée dans le composant (2).
EP18733796.9A 2017-07-12 2018-06-06 Procédé de mise en uvre d'un usinage par enlèvement de matière et dispositif d'usinage par enlèvement de matière d'un composant Withdrawn EP3624987A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017211904.7A DE102017211904A1 (de) 2017-07-12 2017-07-12 Verfahren zur Durchführung einer und Vorrichtung zur materialabtragenden Bearbeitung eines Bauteils
PCT/EP2018/064853 WO2019011535A1 (fr) 2017-07-12 2018-06-06 Procédé de mise en œuvre d'un usinage par enlèvement de matière et dispositif d'usinage par enlèvement de matière d'un composant

Publications (1)

Publication Number Publication Date
EP3624987A1 true EP3624987A1 (fr) 2020-03-25

Family

ID=62716033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18733796.9A Withdrawn EP3624987A1 (fr) 2017-07-12 2018-06-06 Procédé de mise en uvre d'un usinage par enlèvement de matière et dispositif d'usinage par enlèvement de matière d'un composant

Country Status (6)

Country Link
US (1) US20210146456A1 (fr)
EP (1) EP3624987A1 (fr)
KR (1) KR20200028420A (fr)
AU (1) AU2018300549C1 (fr)
DE (1) DE102017211904A1 (fr)
WO (1) WO2019011535A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019245532A1 (fr) * 2018-06-19 2019-12-26 Siemens Aktiengesellschaft Procédé de fabrication pour finition de bavure de noyau céramique
DE102020200201A1 (de) * 2020-01-09 2021-07-15 Siemens Aktiengesellschaft Verfahren zur Reparatur von beschädigten Schaufelfußaufnahmenuten eines Rotors
US11592362B2 (en) * 2020-09-24 2023-02-28 General Electric Company System and method for full-scale sampling to conduct material tests on a steam turbine rotor

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2431173A1 (de) * 1974-06-28 1976-01-15 Graenges Staal Oxeloesund Verfahren und vorrichtung zum produzieren von metallischen rohlingen, insbesondere stahlbrammen, die zumindest in einem vorbestimmten oberflaechenbereich im wesentlichen keine fehler aufweisen
US5161291A (en) * 1992-01-21 1992-11-10 Westinghouse Electric Corp. Adjustable machining apparatus for machining a cylindrical workpiece
US20050198821A1 (en) * 2004-03-10 2005-09-15 General Electric Company Machining tool and method for repair of rotor teeth in a generator
EP2254728B1 (fr) * 2008-02-19 2019-09-11 Rolls-Royce Corporation Système et procédé pour réparer des objets
DE102008000480A1 (de) * 2008-03-03 2009-09-10 Alstom Technology Ltd. Vorrichtung zur Nachbearbeitung von Befestigungsnuten zur Aufnahme einer Beschaufelung einer Gas- und/oder Dampfturbinenanlage
DE102009033234A1 (de) * 2009-07-14 2011-01-27 Alstom Technology Ltd. Verfahren zum Bearbeiten des Rotors einer Turbine
EP2293011A1 (fr) * 2009-09-07 2011-03-09 Siemens Aktiengesellschaft Dispositif de contrôle, appareil de contrôle et procédé de contrôle pour rainures profilées
DE102012221782A1 (de) * 2012-11-28 2014-05-28 Lufthansa Technik Ag Verfahren und Vorrichtung zur Reparatur eines Flugzeug- und/oder Gasturbinen-Bauteils
DE102015210255A1 (de) * 2015-06-03 2016-12-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Anordnung zum Oberflächenbearbeiten eines stationär gelagerten Werkstückes mit einem an einem Knickarmroboter angebrachten Werkzeug
US9803647B2 (en) * 2015-07-21 2017-10-31 General Electric Company Method and system for repairing turbomachine dovetail slots
DE102015222529A1 (de) 2015-11-16 2017-05-18 Siemens Aktiengesellschaft Fräseinrichtung sowie Verfahren zur Durchführung einer Fräsbearbeitung innerhalb einer Nut
GB2544496B (en) * 2015-11-17 2019-10-09 David Mcbride Paul Wheel recutting
DE102016219171A1 (de) * 2016-10-04 2018-04-05 Siemens Aktiengesellschaft Verfahren zur zerstörungsfreien Materialprüfung

Also Published As

Publication number Publication date
DE102017211904A1 (de) 2019-01-17
WO2019011535A1 (fr) 2019-01-17
AU2018300549B2 (en) 2021-02-25
US20210146456A1 (en) 2021-05-20
AU2018300549A1 (en) 2020-03-05
KR20200028420A (ko) 2020-03-16
AU2018300549C1 (en) 2021-11-18

Similar Documents

Publication Publication Date Title
EP1696289B1 (fr) Procédé pour dimensionner une machine-outil
DE4004237C2 (fr)
EP2760633B1 (fr) Machine-outil et procédé pour mesurer une pièce
DE112014003036B4 (de) Bodenfräsmaschine
EP3624987A1 (fr) Procédé de mise en uvre d'un usinage par enlèvement de matière et dispositif d'usinage par enlèvement de matière d'un composant
DE112005002030T5 (de) Vorrichtung und Verfahren zum Prüfen auf Fehler auf der Oberfläche von Werkstücken
EP3453487B1 (fr) Procédé de positionnement d'un point central sur un axe géométrique dans une machine-outil
EP3167989B1 (fr) Dispositif de fraisage et procédé de réalisation d'un fraisage dans une rainure
DE102017121344A1 (de) Verfahren zum automatischen Bestimmen der geometrischen Abmessungen eines Werkzeugs mit einem schneckengangförmigen Bearbeitungsbereich
EP3596426A1 (fr) Procédé et dispositif pour déterminer, au moins sur certaines parties, de préférence complètement, la géométrie extérieure et intérieure d'une pièce comportant au moins une cavité
EP2998691A1 (fr) Dispositif de mesure de flancs de palier de vilebrequin
DE102005029735A1 (de) Dimensionelle Messmaschine
DE19858154A1 (de) Verfahren und Einrichtung zur Kalibrierung von bewegbaren Vorrichtungen mit mindestens einem teilweise unbestimmten Geometrieparameter
EP3102931A1 (fr) Procédé de mesure par ultrasons d'une épaisseur de paroi dans le cas de soupapes creuses
EP1400309A1 (fr) Procédé et dispositif permettant de tester la géometrie du tranchant d'un outil pouvant être entraíné en rotation
DE3212078C2 (de) Selbsttätig arbeitendes Prüfgerät für die Kreisteilungsprüfung von Zahnrädern sowie Verfahren zum Messen der Verzahnungsrundlaufabweichungen, Zahndickenabweichungen und Zahnlückenabweichungen von Zahnrädern
DE3712920A1 (de) Verfahren und vorrichtung zur teilungspruefung von zahnraedern
DE69413140T2 (de) Verfahren und Vorrichtung zur Endarbeitung von Kommutatoren
EP1366394A2 (fr) Procede et dispositif pour la mesure et l'usinage de pieces
DE3320983A1 (de) Transportables geraet zur pruefung des zahnflankenprofils und der zahnflankenlinien (zahnschraege) von zahnraedern auf verzahnmaschinen oder zahnflankenschleifmaschinen sowie zur positionierung dieses geraetes und zum orientieren des messtasters an der verzahnung fuer den messvorgang
DE102009011682B4 (de) Verfahren zur automatisierten Vermessung eines Werkzeugs in einer Bearbeitungsmaschine, Verfahren zur Verschleißkontrolle oder zur spanenden Bearbeitung eines Werkstücks sowie Bearbeitungsmaschine
DE3704791A1 (de) Verfahren und vorrichtung zur vermessung von koerpern
EP3607314A1 (fr) Dispositif et procédé d'essai non destructif pour un composant
EP3743704B1 (fr) Procédé et dispositif pour prélever un échantillon et utilisation d'un tel dispositif
DE3212081C2 (de) Selbsttätig arbeitendes Zahnradprüfgerät

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20191216

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS ENERGY GLOBAL GMBH & CO. KG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20220307

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20220719