EP2106319A1 - Verfahren zur herstellung einer turbinenschaufel - Google Patents
Verfahren zur herstellung einer turbinenschaufelInfo
- Publication number
- EP2106319A1 EP2106319A1 EP07819941A EP07819941A EP2106319A1 EP 2106319 A1 EP2106319 A1 EP 2106319A1 EP 07819941 A EP07819941 A EP 07819941A EP 07819941 A EP07819941 A EP 07819941A EP 2106319 A1 EP2106319 A1 EP 2106319A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- blank
- holder
- turbine
- airfoil
- 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.)
- Ceased
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 title abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 abstract 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- 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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/02—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from one piece
-
- 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
Definitions
- the present invention relates to a process for production-of a turbine blade with a blade root and a blade body, in which a blank of the turbine blade ge ⁇ poured, the blank is positioned with its blade in a holder and is fixed and formed the final geometry of the blade root by material ,
- the invention relates to a holder with positioning elements and clamping devices in order to position and be able to fix a blade of a turbine blade, wherein the positioning elements and clamping devices are adjustable, so that the clamping position of the turbine blade is adjustable.
- the blade root is the interface to the rotor or the housing of the turbine and therefore defines the spatial position of the turbine Airfoil stuck in the turbine. If the end position of the blade root to the blade is faulty, the turbine blade ⁇ is fixed obliquely in the turbine, whereby the outflow angle from the blade passage is adversely affected. One consequence is a loss of efficiency.
- the object of the present invention is to provide a method and a holder of the abovementioned type such that a turbine blade can be produced with high accuracy.
- This object is achieved in a method of the type mentioned in that before and / or during the formation of the final geometry, the actual shape of the airfoil determined and at a deviation from a desired shape, the position of the airfoil is adjusted in the holder.
- the actual shape of the airfoil is thus determined before and / or during the formation of the final geometry of the blade root. This is compared with a target shape, whereby any deviations are determined. If a deviation has been detected, the position of the airfoil in the holder is corrected so that the end position of the blade root is correct, irrespective of the deviations. according to the specifications of the turbine blade is formed.
- the above object is achieved in a holder of the type mentioned in that the holder additionally has a control unit.
- This is designed to determine the actual shape of the airfoil, compare them with a desired shape and automatically actuate the positioning and the clamping devices in case of a deviation. This makes it possible to automatically determine and adjust the position of the turbine blade in the holder.
- Figure 1 is a schematic representation of a blank of a turbine blade, which is fixed in a holder misaligned ⁇ assigns,
- Figure 2 is a schematic representation of a turbine acting ⁇ fel prepared from the blank according to Figure 1 by removal of material
- FIG. 3 shows a schematic representation of the blank according to FIG. 1, the position of which is adapted in the holder,
- FIG. 4 shows a schematic representation of the turbine blade which has been produced from the blank according to FIG. 3 by material removal
- FIG. 5 shows a schematic illustration of a further blank of a turbine blade, which is fixed in a mis-ordered manner in the holder
- Figure 6 is a schematic representation of a turbine acting ⁇ fel, which was prepared from the blank according to Figure 5 by Mate ⁇ rialabtrag,
- Figure 7 is a schematic representation of the blank according to
- FIG. 8 is a schematic representation of a Turbinenschau- fei prepared from the blank according to Figure 7 by Mate ⁇ rialabtrag.
- FIG. 1 schematically shows a blank R of a turbine blade. This has been produced by precision casting, which is known per se in the prior art, and has a blade root 1 and a blade 2 connected thereto. The blank R deviates in its geometry from the specifications, since the blade 2, for example, not centered by faulty material formed on the blade root 1, but is offset in the drawing upwards.
- the blade 2 of the blank R is positionably clamped in a holder, wherein two clamping devices 3, 4 of the holder are shown schematically.
- the blank R is misordered here, i. clamped too high.
- the final geometry of the blade root 1 is asbil ⁇ det in the clamped state by material removal, here by grinding.
- FIG. 2 shows a turbine blade S, which was produced from the blank R shown in FIG. 1 by removal of material.
- the deviation of the geometry of the blade ⁇ leaf 2 has led to the blank R was incorrectly clamped in the holder. Due to this misalignment, the blade root 1 of the turbine blade S was made to be too high relative to the blade 2.
- FIG. 3 shows the blank R according to FIG. 1, whose position R is adapted in the holder.
- the actual shape of the airfoil 2 was determined and compared with a desired shape.
- the deviation described above is be ⁇ cardium the arrangement of the blade 2 on the shovel foot 1 has been found.
- the position of the airfoil 2 in the holder was then changed by adjusting the tensioning devices 3, 4.
- the clamping devices 3, 4 in the drawing after moved down, so that the blank R is tightened deeper overall ⁇ .
- FIG 4 shows the turbine blade S, which was prepared from the ge ⁇ Gurss Figure 3 clamped blank R by removal of material. This has no significant deviations from the intended geometry.
- FIGS. 5 to 8 show, analogously to FIGS. 1 to 4, a further faulty formed blank R and the turbine blades S produced therefrom.
- Blade foot 1 connected.
- FIG 5 is shown how the blank R is fixed in the holder without an adjustment of the position of the clamping devices 3, 4.
- the misalignment of the blank R in the holder is also compensated according to the invention by adjusting the clamping devices 3, 4 by the clamping device 4 is moved in the drawing and relative to the clamping device 3 upwards.
- the turbine blade S can be formed without significant deviation from the desired geometry by material removal from the blank R.
- the support used may comprise a control unit which is configured to determine the actual shape of the airfoil to compare this with a desired form and at a deviation of the positioning elements automatically betae ⁇ term.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Jigs For Machine Tools (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07819941A EP2106319A1 (de) | 2006-11-14 | 2007-08-15 | Verfahren zur herstellung einer turbinenschaufel |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06023664A EP1927428A1 (de) | 2006-11-14 | 2006-11-14 | Verfahren zur Herstellung einer Turbinenschaufel |
| PCT/EP2007/058424 WO2008058775A1 (de) | 2006-11-14 | 2007-08-15 | Verfahren zur herstellung einer turbinenschaufel |
| EP07819941A EP2106319A1 (de) | 2006-11-14 | 2007-08-15 | Verfahren zur herstellung einer turbinenschaufel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2106319A1 true EP2106319A1 (de) | 2009-10-07 |
Family
ID=37770888
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06023664A Withdrawn EP1927428A1 (de) | 2006-11-14 | 2006-11-14 | Verfahren zur Herstellung einer Turbinenschaufel |
| EP07819941A Ceased EP2106319A1 (de) | 2006-11-14 | 2007-08-15 | Verfahren zur herstellung einer turbinenschaufel |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06023664A Withdrawn EP1927428A1 (de) | 2006-11-14 | 2006-11-14 | Verfahren zur Herstellung einer Turbinenschaufel |
Country Status (2)
| Country | Link |
|---|---|
| EP (2) | EP1927428A1 (de) |
| WO (1) | WO2008058775A1 (de) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3818646A (en) * | 1973-01-12 | 1974-06-25 | Trw Inc | Fixture for holding precisely shaped parts |
| DE4124340C2 (de) * | 1991-07-23 | 1995-02-02 | Werner Prof Dr Ing Moeller | Verfahren zum Spannen, Abstützen, Anpassen oder zum Ausgleichen der Lage von geometrisch komplexen Werkstücken und Spannvorrichtung |
| US6139412A (en) * | 1996-04-30 | 2000-10-31 | United Technologies Corporation | Fixture for manufacturing precisely shaped parts |
| US6855033B2 (en) * | 2001-12-13 | 2005-02-15 | General Electric Company | Fixture for clamping a gas turbine component blank and its use in shaping the gas turbine component blank |
| FR2879117A1 (fr) * | 2004-12-15 | 2006-06-16 | Malichaud Atlantique Soc Par A | Procede d'usinage d'une piece telle qu'une aube de turbine et dispositif porte-piece pour sa mse en oeuvre |
-
2006
- 2006-11-14 EP EP06023664A patent/EP1927428A1/de not_active Withdrawn
-
2007
- 2007-08-15 WO PCT/EP2007/058424 patent/WO2008058775A1/de not_active Ceased
- 2007-08-15 EP EP07819941A patent/EP2106319A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008058775A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008058775A1 (de) | 2008-05-22 |
| EP1927428A1 (de) | 2008-06-04 |
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