EP3600761A1 - Verfahren zum reinigen einer schaufelfussaufnahmenut - Google Patents
Verfahren zum reinigen einer schaufelfussaufnahmenutInfo
- Publication number
- EP3600761A1 EP3600761A1 EP18724171.6A EP18724171A EP3600761A1 EP 3600761 A1 EP3600761 A1 EP 3600761A1 EP 18724171 A EP18724171 A EP 18724171A EP 3600761 A1 EP3600761 A1 EP 3600761A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base body
- receiving groove
- abrasive surface
- tool
- machining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
- B08B1/165—Scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
-
- 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
- B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
- B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
- B24D15/023—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/002—Cleaning of turbomachines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
-
- 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
Definitions
- the present invention relates to a method for cleaning a having formed ⁇ th on a rotor of an axial flow rotary machine receiving groove, which serves for receiving a blade root of a rotor blade in which introduced an at least partially provided with at least one abrasive surface, oblong trained base body of a machining tool into the receiving groove and is moved back and forth in this performing a machining. Furthermore, the present invention relates to a machining tool for carrying out such a method.
- the blade roots of the blades are held in receiving slots provided on the rotor, which are equidistantly spaced along the circumference of a shaft or wheel disk of the rotor and extend in a substantially axial direction of the turbomachine.
- the contour of the receiving grooves corresponds to the contour of the blade roots to be accommodated, so that the blade roots can be pushed into the receiving grooves in the axial direction and, in the assembled state, fit positively into the respective receiving groove.
- a well-known and often used for use contour of the grooves and corresponding blade feet is the dovetail contour or the Christmas tree contour.
- Such oxide layers are to be removed regularly during maintenance or repair work.
- Diamond files are currently mostly used for this purpose.
- the use of sandpaper is widespread. In both cases, the processing is very tedious, since some areas of the receiving groove are poorly accessible. In addition, it requires the Achieving an even work result but also manual skills.
- the present invention provides a method of the type mentioned above, which is characterized in that the outer contour of the base body is adapted to the contour of the receiving groove to be cleaned so that the base body in the inserted state in the receiving substantially form-fitting manner at the Wall of the receiving groove is applied so that it serves as a guide body during the forward and backward movement. Thanks to such an embodiment of the base body are also difficult to reach manually Be ⁇ rich the receiving groove easy to edit. In addition, the demands on the craftsmanship of be ⁇ working person are comparatively low.
- Is at least an abrasive surface pressed currency ⁇ rend machining with a spring force against the wall of the receiving groove advantageous. Accordingly, via the spring force, an automatic delivery of the abrasive surface to be machined wall of the receiving groove. Since ⁇ over addition is effectively counteracted but also an undesired wedging of the base body within the groove during the implementing tion of the back and forth motion.
- the spring force is preferably adjustable, whereby the flexibility of the processing is improved ⁇ .
- the base body is moved manually within the receiving groove. Ent ⁇ speaking, the cost of the processing tool ge ⁇ ring.
- the vorlie ⁇ ing invention further provides a processing tool for performing the method according to the invention, comprising a provided with at least one abrasive surface, elongated base body whose outer contour is adapted to the contour of the receiving groove to be cleaned, that this essentially form fit into the receiving groove and serves as a guide body.
- machining tool are from the bottom of the base body before ⁇ body, which facilitate the movement of the base body through the receiving groove.
- the roller bodies are preferably arranged on a roller body plate, which is held against the spring force of at least one return ⁇ downwardly movable on the base body, wherein an adjusting means is provided, the plate is resiliently pressed against the spring force of the at least ei ⁇ NEN return spring when actuated , Thanks to such a construction, the base body together with the at least pressed an abrasive surface during the pre- and Zugurbewe ⁇ supply through to be purified receiving groove on the Stellmit- tel against the wall of the receiving groove, wherein on the at least one return spring, the desired flexibility provided ,
- the adjusting means preferably comprises a set screw fitted from above into one with an internal thread which is itself bolted to the plate extending through bore of the base body, and a-housed in the through hole ⁇ ne compression spring, on the one hand against the setting screws ⁇ be on the other hand supported against the plate. In this way, a simple and inexpensive construction is achieved.
- the at least one abrasive surface is designed as a grinding surface, in particular in the form of an abrasive surface. ner diamond coating. Such a diamond coating can also be used to process materials of the highest strength.
- the at least one abrasive surface is detachably fastened to the base body, in particular in the form of a tool plate provided with the abrasive surface, which is preferably accommodated in a depression formed on the base body. The detachable attachment of the abrasive surface is therefore of
- worn abrasive surfaces can be replaced without whe ⁇ res.
- the inclusion in a recess formed on the Ba ⁇ sis redesign indentation counteracts accidental slipping of the abrasive surface.
- the at least one abrasive surface is arranged on an upwardly facing surface portion of a projectingitich ⁇ the projection of the base portion.
- the base body is preferably divided in the longitudinal direction into three parts, which via quick fasteners to each other
- An upwardly projecting handle is advantageously attached to the base body, which facilitates the handling of the machining tool.
- Figure 1 is a schematic perspective plan view of a
- Figure 2 is a perspective bottom view of the processing tool shown in Figure 1;
- Figure 3 is a side view of the machining tool;
- Figure 4 is an end view of the machining ⁇ zeugs;
- Figure 5 is a sectional side view of the processing ⁇ tool and
- Figure 6 is a view of the machining tool during the
- the figures show a machining tool 1 according to an embodiment of the present invention.
- the machining tool 1 serves for cleaning grooves formed on a rotor 2 of an axial flow machine 3, only partially shown in FIG. 6, in which the blade roots of the rotor blades are received in a known manner.
- the machining tool 1 comprises as main components a base body 6 having an abrasive surface 5 and an upwardly projecting handle 7 arranged thereon.
- the base body 6 is elongated, wherein the longitudinal ⁇ direction present coincides with the X-direction of the drawn coordinate system, to which reference is made below.
- the outer contour of the base body 6 is adapted to the contour of the receiving grooves 4 such that the base body 6 can be pushed laterally into the receiving grooves 4 and then bears against the wall of the receiving groove substantially in a form-fitting manner.
- the base body 6 for this purpose comprises on both sides protruding projections 8 in the Y-direction, which project into the corresponding undercuts 9 of the dovetails. tail-shaped grooves 4 grab.
- the projections 8 of the base body 6 extends in the X direction in each case a continuous Ver ⁇ depression 10, in each of which provided with an abrasive surface 5 tool plates 11 are inserted and bolted to the base body 6.
- the abrasive surfaces 5 are each formed by a diamond coating which defines a grinding surface.
- a plurality of rolling stand in front body 12 which are presently located in the X-direction alignment with each other.
- the rolling bodies 12 are arranged on ent ⁇ speaking bolted releasably to a roller plate 13, which is embedded in the base body 6 and is held by means of retaining screws 14 to the latter.
- the retaining screws 14 are inserted from above into corresponding through bores 15 of the base body 6 and are supported via an associated return spring 16 against the base body 6 such that the rolling body plate 13 can be moved downward against the spring force of the return springs 16 relative to the base body 6 , Further, an adjusting means 17 is provided, the roller body plate 13 is resiliently pressed against the spring force of the return springs 16 downwardly when actuated.
- the actuating means 17 in the present case comprises a set screw 18 that provided from above in a with an internal thread 19, is screwed up to the roller plate 13 extend ⁇ en throughbore 20 of base body 6, and received in the through bore 20 compression spring 21, on the one hand, supported against the adjusting screw 18 and at the other hand, ⁇ against the rolling body plate. 13
- the base body 6 can basically be formed in one piece, it is presently divided in the longitudinal direction into three parts, namely in two identically designed Be ⁇ tenmaschine 22 and in a central part 23, on which the handle 7, the rolling body plate 13 and the adjusting means 17 are arranged ⁇ .
- the side parts 22 are positively attached to the middle part 23 from above, which is realized via corresponding dovetail connections 24.
- Each snap lock 25 comprises a quick release lever 26, which is arranged approximately centrally on the corresponding side part 22 and about a pivot pin 27 extending in the Y direction
- the processing tool 1 is transported in disassembled condition trans ⁇ . To clean with the machining tool receiving grooves 4 1 of a rotor 2 of an axial flow rotary machine 3, in particular to free of oxide layers, the machining ⁇ processing tool 1 has to be mounted in a first step.
- the side parts 22 are pushed from above onto the middle part 23 when the quick-release fastener 25 is open.
- the quick release lever 26 are pivotally moved about their pivot pin 27 downward, the teeth 28 engage in the associated counter teeth 29 of the sliding elements 30 so that they are moved against the spring ⁇ force of the return springs 34 in the direction of the central part 23 and the locking pin 32nd into the recesses 35 of the middle part 23 push.
- the base body 6, which is now assembled, is pushed into the receiving groove 4 to be machined, as shown in FIG 6 is shown.
- the adjusting screw 18 of the actuating means ⁇ 17 is screwed by a predetermined amount, whereby the roller body plate 13 is moved against the spring forces of the return ⁇ spring 16 via the compression spring 21 downward.
- the abrasive surfaces 5 are pressed in response to the depth of engagement of the screw 18 with a predetermined force against the wall of the receiving groove 4.
- the surface of the receiving groove 4 can be machined by manually grasping the handle 7 of the processing tool 1 and the base body 6 is moved back and forth within the receiving groove 4 wherein the base ⁇ body 6 serves as a guide body in this movement.
- the rolling elements 12 support this movement. Due to the elastic pressure force beyond a tilting of the base body 6 is prevented within the receiving groove 4 during the back and forth movement.
- Pressing force can be provided on the central part 23, a scale 36, whereby in particular the reproducibility of a machining can be improved.
- the scaling 36 is to be regarded as an optional feature.
- the associated tool plate 11 can be easily removed and replaced by a new tool plate 11.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017208949.0A DE102017208949A1 (de) | 2017-05-29 | 2017-05-29 | Verfahren zum Reinigen einer Schaufelfußaufnahmenut |
| PCT/EP2018/061363 WO2018219587A1 (de) | 2017-05-29 | 2018-05-03 | Verfahren zum reinigen einer schaufelfussaufnahmenut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3600761A1 true EP3600761A1 (de) | 2020-02-05 |
Family
ID=62152531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18724171.6A Pending EP3600761A1 (de) | 2017-05-29 | 2018-05-03 | Verfahren zum reinigen einer schaufelfussaufnahmenut |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20200078900A1 (de) |
| EP (1) | EP3600761A1 (de) |
| DE (1) | DE102017208949A1 (de) |
| WO (1) | WO2018219587A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11085323B2 (en) | 2018-09-05 | 2021-08-10 | Raytheon Technologies Corporation | Gas turbine engine slot tools |
| CN112139954A (zh) * | 2020-09-21 | 2020-12-29 | 宋伟雄 | 一种机械大型零件加工用铁板表面自动化物理法除锈设备 |
| CN113241915B (zh) * | 2021-06-15 | 2022-12-13 | 西门子电机(中国)有限公司 | 电机机座清洁设备及电机机座生产线 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6679757B2 (en) | 2002-03-21 | 2004-01-20 | General Electric Company | Shaping tool and method for shaping curved surfaces on workpieces |
| WO2006124616A2 (en) | 2005-05-12 | 2006-11-23 | General Electric Company | Ultrasonic peening treatment of assembled components |
| US7029371B1 (en) | 2005-06-17 | 2006-04-18 | Siemens Power Generation, Inc. | Jig for guiding a grinder |
| US20110294407A1 (en) * | 2010-05-28 | 2011-12-01 | Justin Wade Doyle | Manual operated detail sander |
| US20110306275A1 (en) * | 2010-06-13 | 2011-12-15 | Nicolson Matthew D | Component finishing tool |
| DE102014220161A1 (de) | 2014-10-06 | 2016-04-07 | Siemens Aktiengesellschaft | Bearbeitungseinrichtung |
| DE102015214999A1 (de) * | 2015-08-06 | 2017-02-09 | Siemens Aktiengesellschaft | Verfahren und Bearbeitungswerkzeug zum Reinigen einer Schaufelaufnahmenut einer Strömungsmaschine |
-
2017
- 2017-05-29 DE DE102017208949.0A patent/DE102017208949A1/de not_active Withdrawn
-
2018
- 2018-05-03 WO PCT/EP2018/061363 patent/WO2018219587A1/de not_active Ceased
- 2018-05-03 US US16/610,088 patent/US20200078900A1/en not_active Abandoned
- 2018-05-03 EP EP18724171.6A patent/EP3600761A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018219587A1 (de) | 2018-12-06 |
| DE102017208949A1 (de) | 2018-11-29 |
| US20200078900A1 (en) | 2020-03-12 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
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