CN110370044A - Steam turbine blade center hole machining clamp and its clamping method - Google Patents
Steam turbine blade center hole machining clamp and its clamping method Download PDFInfo
- Publication number
- CN110370044A CN110370044A CN201910689013.7A CN201910689013A CN110370044A CN 110370044 A CN110370044 A CN 110370044A CN 201910689013 A CN201910689013 A CN 201910689013A CN 110370044 A CN110370044 A CN 110370044A
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- tightly
- blade
- blade root
- holds
- integral shroud
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- 238000003754 machining Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims description 13
- 229910003460 diamond Inorganic materials 0.000 claims description 7
- 239000010432 diamond Substances 0.000 claims description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- 238000003672 processing method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 239000000306 component Substances 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
Classifications
-
- 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/063—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding turbine blades
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Steam turbine blade center hole machining clamp and its processing method, it can avoid blade and generates displacement, it can ensure that the firm accuracy with blade center hole Working position of blade, it includes single Finial device, double Finial devices, integral shroud cohesion device is provided between single Finial device and double Finial devices, blade root cohesion device, integral shroud cohesion device includes that integral shroud holds beam tightly, integral shroud holds seat tightly, blade root cohesion device includes that blade root holds beam tightly, blade root holds seat tightly, integral shroud holds beam tightly, blade root holds beam tightly, integral shroud holds seat top tightly, blade root holds seat top tightly and is respectively arranged at least two clamping screws, clamping step, which includes: S1, to be placed in the integral shroud for blade and holds seat tightly, blade root is held tightly on seat, S2 passes through single Finial device of two sides, double Finial devices realize the located lateral of blade, S3 passes through the integral shroud cohesion device, blade root cohesion device Realize being locked for blade, S4 dismantles single Finial device, double Finial devices, realizes clamping.
Description
Technical field
The present invention relates to steam turbine blade technical field of processing equipment, specially a kind of to be used for steam turbine blade center
The fixture of hole machined.
Background technique
The quality of core component of the movable vane piece as steam turbine, machining accuracy and quality directly affects the property of steam turbine
Can, especially when processing the centre bore of movable vane piece, positioning datum of the centre bore as blade has higher want to machining accuracy
It asks, such as the structural schematic diagram that Fig. 1 is a kind of common movable vane piece, machining center hole inside it is needed when processing to it, is passed
The processing method of the movable vane piece centre bore of system is radial drill cellular type, and movable vane piece is clamped in blade holder, driving rocker arm rotation
Realize drilling operation, currently used movable vane plate clamp relies primarily on pressing plate realization to being fixed for blade, in blade holder
It is upper that pressing plate corresponding with the top of movable vane piece is set, it is compressed by pressing plate and realizes that blade is fixed, but the outer rim of general movable vane piece
Face is arc surface, and pressing plate can only be realized to be contacted with the part of movable vane piece outer edge surface, and blade is easily born biggish in boring procedure
Torsion relies only on the torsion that the pressure of pressing plate can not overcome blade to bear, and movable vane piece may still generate displacement on fixture, thus
The Working position inaccuracy or the non-compliant problem of central hole size for leading to centre bore occur.
Summary of the invention
For it is existing in the prior art movable vane piece centre bore is processed when, because blade bear torsion it is larger, use
The mode that pressing plate in existing fixture compresses is unable to ensure the firm of movable vane piece, and movable vane piece is caused to generate displacement, shadow on fixture
The problem of ringing central hole location accuracy and dimensional accuracy, the present invention provides one kind to be used for steam turbine blade center hole machined
Fixture can avoid blade when blade bears larger torsion and generate displacement, it is ensured that blade is firm, to can ensure that blade
The accuracy of centre bore Working position, meets requirement on machining accuracy.
A kind of fixture for steam turbine blade center hole machined comprising bottom plate, the top two sides point of the bottom plate
It is not provided with single Finial device, double Finial devices, which is characterized in that be provided between the list Finial device and double Finial devices
Integral shroud cohesion device, blade root cohesion device, the integral shroud cohesion device is close to single Finial device, the blade root cohesion device
Close to double Finial devices, the integral shroud cohesion device includes that integral shroud holds beam tightly, integral shroud holds seat, the blade root cohesion device tightly
Beam, blade root holding seat are held tightly including blade root, the integral shroud holds seat tightly, the bottom end of blade root holding seat is individually fixed in the bottom plate,
One end that the integral shroud holds beam tightly is installed on one end that the integral shroud holds seat tightly by pivot pin rotation, and the integral shroud holds the another of beam tightly
One end is fixed by the other end that bolt holds seat tightly with the integral shroud, after the integral shroud holds beam and integral shroud holding seat enclosing tightly
The cavity of composition is diamond shape, and one end that the blade root holds beam tightly is installed on one end that the blade root holds seat tightly by pivot pin rotation,
The other end that the blade root holds beam tightly is fixed by the other end that bolt holds seat tightly with the blade root, and the blade root holds Liang Yusuo tightly
Stating blade root and holding the cavity constituted after seat encloses tightly is diamond shape, and the integral shroud holds beam tightly, blade root holds beam tightly, integral shroud holds the top of seat tightly
The top that seat is held at end, blade root tightly is respectively arranged at least two clamping screws.
It is further characterized by,
The integral shroud holds beam tightly, blade root holds beam tightly, blade root holds the top of seat tightly, the top of blade root holding seat is L shape；
The list Finial device includes single dead head, rolling center, and the bottom end of the list dead head is fixed on described by screw
On bottom plate, the rolling center is fixed on the top of single dead head, the cover screw component by cover screw component
Including cover board, the top of the list rolling center seat is provided with bushing, and spring, the movable top are set on the rolling center
Point center point pass through the bushing it is corresponding with the location hole on integral shroud, screw across the cover board, the bushing with it is described
The non-center point of rolling center abuts；
Double Finial devices include double dead heads, two rolling centers, and the bottom end of double dead heads is fixed on by screw
On the pedestal, the top of double dead heads is L shape, and two rolling centers are respectively arranged in the double dead heads of the L shape
Riser, on transverse slat, the rolling center passes through the cover screw component respectively and is fixed on double dead heads, the work
Top center point is moved towards the location hole on blade root.
A method of steam turbine blade clamping is realized based on above-mentioned fixture, specifically includes the following steps:
S1, the blade is placed in the integral shroud holds seat tightly, blade root is held tightly on seat；
S2, the located lateral that the blade is realized by single Finial device, the double Finial devices of two sides；
S3 realizes being locked for the blade by the integral shroud cohesion device, blade root cohesion device；
S4 dismantles the single Finial device, double Finial devices, realizes clamping；
S5 processes the centre bore of the blade, and machining device for central holes is placed in the one of the blade root cohesion device
Side makes the process tool on machining device for central holes correspond to the corresponding position of the blade and drills, to realize steam turbine
The processing of movable vane piece centre bore.
Blade is placed in integral shroud and holds seat, blade root armful tightly by the processing for applying the present invention to steam turbine blade centre bore
On tight seat, the positioning of blade is realized by single Finial device of two sides, double Finial devices, and integral shroud is made to hold beam tightly centered on pin shaft
Rotation, being placed in the integral shroud of blade, integral shroud holds beam tightly and integral shroud is held tightly in the cavity that seat is constituted, and blade root is made to hold beam tightly with pin shaft
Center rotation, being placed in the blade root of blade, blade root holds beam tightly and blade root is held tightly in the cavity that seat is constituted, and screws integral shroud and holds beam, leaf tightly
Root holds beam tightly, integral shroud holds the top of seat tightly, the clamping screw on the top of blade root holding seat, and each bolt is made to be connected to blade
On, it is locked to realize that the integral shroud of blade, blade root are circumferential；Make the equal stress of the integral shroud of blade, blade root by the present apparatus
It supports, and makes the equal stress of circumferential direction of integral shroud, blade root by the locking screw on integral shroud cohesion device, blade root cohesion device, therefore is solid
It is fixed stronger, it holds integral shroud tightly beam and integral shroud holds the cavity of pedestal composition tightly, blade root holds beam tightly and blade root holds the chamber that seat is constituted tightly
Body is disposed as diamond shape, can be by the integral shroud of blade, the firm holding of blade root in cavity, and is carrying out center hole machined to blade
When, it can effectively avoid blade and generate displacement due to by torsion, ensure that the accuracy of blade center hole Working position, meet
The requirement of machining accuracy.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the main view of common blade；
Fig. 2 is the structural schematic diagram of main view of the present invention；
Fig. 3 is the structural schematic diagram that the present invention overlooks；
Fig. 4 be Fig. 2 P to structural schematic diagram；
Fig. 5 be Fig. 2 Q to structural schematic diagram；
Fig. 6 be Fig. 2 R to structural schematic diagram.
Specific embodiment
See Fig. 1 to Fig. 6, a kind of fixture for steam turbine blade center hole machined comprising bottom plate 1, the top of bottom plate 1
End two sides are respectively arranged with single Finial device 2, double Finial devices 3, and single Finial device 2 includes single dead head 21, rolling center 22,
The bottom end of single dead head 21 is fixed on bottom plate 1 by screw, and rolling center 22 is fixed on single top by cover screw component
The top of seat 21, cover screw component includes cover board 23, and the top of single rolling center seat 21 is provided with bushing 24, rolling center 21
On be set with spring 25, spring 25 is convenient for top reset, and the center point of rolling center 22 passes through the positioning on bushing 24 and integral shroud
Hole is corresponding, and screw 26 passes through cover board 23, bushing 24 is abutted with the non-center point of rolling center 22；Double Finial devices 3 include double
31, two rolling centers 32 of dead head, the bottom end of double dead heads 31 are fixed on pedestal 1 by screw, the top of double dead heads 31
End is L shape, and two rolling centers 32 are respectively arranged the riser in the double dead heads 31 of L shape, on transverse slat, and rolling center 32 passes through respectively
Cover screw component is fixed on double dead heads 31, and the center point of rolling center 32 is towards the location hole on blade root；
Integral shroud cohesion device 4, blade root cohesion device 5 are provided between single Finial device 2 and double Finial devices 3, integral shroud holds dress tightly
It sets 3 to arrange close to single Finial device 2, blade root cohesion device 5 includes integral shroud close to double Finial device arrangements, integral shroud cohesion device 4
Hold beam 41, integral shroud holding seat 42 tightly, blade root cohesion device 5 includes that blade root holds beam 51 tightly, blade root holds seat 52 tightly, and integral shroud holds beam tightly
41, blade root holds beam 51 tightly, blade root holds the top of seat 42 tightly, the top of blade root holding seat 52 is L shape；Integral shroud holds seat 42, leaf tightly
The bottom end that root holds seat 52 tightly passes through screw respectively and is fixed on bottom plate 1, and one end that integral shroud holds beam 41 tightly passes through the rotation installation of pivot pin 43
One end of seat 42 is held tightly in integral shroud, and the other end that the other end that integral shroud holds beam 41 tightly holds seat 42 tightly by bolt 44 and integral shroud is solid
Fixed, it is diamond shape that integral shroud, which holds the cavity constituted after beam 41 and the integral shroud holding enclosing of seat 42 tightly, and one end that blade root holds beam 51 tightly passes through axis
Pin 53, which rotates, is installed on one end that blade root holds seat 52 tightly, and the other end that blade root holds beam 51 tightly holds seat 52 tightly by bolt 54 and blade root
The other end fix, it is diamond shape that blade root, which holds beam 51 and blade root tightly and holds the cavity constituted after seat 52 encloses tightly, and integral shroud holds beam 41, leaf tightly
Root holds beam 51 tightly, integral shroud holds the top of seat 42 tightly, the top of blade root holding seat 52 is respectively arranged at least two clamping screws 6,
Integral shroud holds beam 41 tightly in the present embodiment, blade root holds beam 51 tightly, integral shroud holds the top of seat 42 tightly, the top difference of blade root holding seat 52
There are four clamping screws 6 for setting.
Apply the present invention to the processing of steam turbine blade centre bore, it is a kind of to realize that blade 7 fills using above-mentioned fixture
The method of folder, specifically includes the following steps: S1, blade 7 to be placed in integral shroud holds seat 42 tightly, blade root is held tightly on seat 52；
S2, the positioning that blade 7 is realized by single Finial device 2, the double Finial devices 3 of two sides, specific: artificial rotating vane 7,
Keep the rolling center 22 on single dead head 21 corresponding with the location hole on 7 integral shroud of blade, screws the screw 26 of non-center point, screw
The compression of 26 push the springs 25, and push rolling center 22 mobile towards the location hole on integral shroud, support the center point of rolling center 22
It is pressed on integral shroud, then makes the rolling center 32 on double dead heads 3 corresponding with the location hole on blade root respectively, screw non-top
The screw 26 at tip, the compression of 26 push the spring 25 of screw, and the top location hole movement towards on blade root is pushed, make rolling center 32
Center point press on corresponding positioning hole on blade root respectively, to realize the positioning of blade 7, while single Finial device 2, double
The transverse direction that Finial device 3 realizes blade 7 is fixed；
S3 realizes being locked for blade 7 by integral shroud cohesion device 4, blade root cohesion device 5, specific: integral shroud being made to hold beam tightly
41 are rotated centered on pin shaft 43, and being placed in the integral shroud of blade 7, integral shroud holds beam 41 tightly and integral shroud is held tightly in the cavity that seat 42 is constituted,
Make blade root hold beam 51 tightly to rotate centered on pin shaft 53, being placed in the blade root of blade 7, blade root holds beam 51 tightly and blade root holds seat 52 tightly
In the cavity of composition, integral shroud holding beam 41 is screwed, blade root holds beam 51 tightly, integral shroud holds the top of seat 42 tightly, blade root holds seat 52 tightly
The clamping screw 6 on top is connected to each bolt 6 on blade 7, to realize the locking of the integral shroud of blade 7, blade root circumferential direction
It is fixed；
S4 dismantles single Finial device 2, double Finial devices 3, realizes the clamping of steam turbine blade；Single top pedestal 21, Double Tops
Sharp pedestal 31 is fixed on bottom plate 1 by screw respectively, therefore, convenient for dismantling to single Finial device 2, double Finial devices 3
It is operated with installation, can save the time, improve efficiency；
Machining device for central holes is placed in the side of blade root cohesion device 5, made by S5, the processing of steam turbine blade centre bore
Process tool on processing unit (plant) corresponds to corresponding position and drilled (draws out the machining position of centre bore on blade in advance
Set, the centre bore positioned when easy to process), to realize the processing of steam turbine blade centre bore, when processing, adds
Position corresponding to work cutter is the position of the corresponding location hole of rolling center of single dead head on blade.
Integral shroud in the present apparatus holds beam 41 tightly, blade root holds beam 51 tightly, blade root holds seat 42 tightly, the top of blade root holding seat 52 is equal
It is set as L shape, integral shroud can be made to hold beam 42 tightly, blade root holds beam 51 tightly, blade root holds the top of seat 4 tightly, blade root holds seat 52 tightly and thereon
The screw in portion constitutes the external quadrangle of blade 7, it can be ensured that the circumferential uniform stressed of blade 7 can effectively avoid in processing blade
Lateral displacement is generated due to by torsion during centre bore, ensures that the accuracy of blade center hole Working position.
Claims (5)
1. a kind of fixture for steam turbine blade center hole machined comprising bottom plate, the top two sides difference of the bottom plate
It is provided with single Finial device, double Finial devices, which is characterized in that be provided with leaf between the list Finial device and double Finial devices
It is preced with cohesion device, blade root cohesion device, the integral shroud cohesion device is leaned on close to single Finial device, the blade root cohesion device
Nearly double Finial devices, the integral shroud cohesion device include that integral shroud holds beam tightly, integral shroud holds seat, the blade root cohesion device packet tightly
It includes blade root and holds beam, blade root holding seat tightly, the integral shroud holds seat tightly, the bottom end of blade root holding seat is individually fixed in the bottom plate, institute
The one end for stating integral shroud holding beam is installed on one end that the integral shroud holds seat tightly by pivot pin rotation, and the integral shroud holds the another of beam tightly
End is fixed by the other end that bolt holds seat tightly with the integral shroud, and the integral shroud holds beam tightly and the integral shroud holds structure after seat encloses tightly
At cavity be diamond shape, one end that the blade root holds beam tightly is installed on one end of the blade root holding seat, institute by pivot pin rotation
State blade root and hold the other end of beam tightly and fixed by the other end of bolt and blade root holding seat, blade root holding beam with it is described
It is diamond shape that blade root, which holds the cavity that constitutes after seat encloses tightly, the integral shroud holds beam tightly, blade root holds beam tightly, integral shroud hold tightly seat top,
The top that blade root holds seat tightly is respectively arranged at least two clamping screws.
2. a kind of fixture for steam turbine blade center hole machined according to claim 1, which is characterized in that described
Integral shroud holds beam tightly, blade root holds beam tightly, blade root holds the top of seat tightly, the top of blade root holding seat is L shape.
3. a kind of fixture for steam turbine blade center hole machined according to claim 1, which is characterized in that described
Single Finial device includes single dead head, rolling center, and the bottom end of the list dead head is fixed on the bottom plate by screw, institute
The top that rolling center is fixed on single dead head by cover screw component is stated, the cover screw component includes cover board,
The top of the list rolling center seat is provided with bushing, is set with spring on the rolling center, the rolling center it is top
End is corresponding with the location hole on integral shroud across the bushing, and screw passes through the cover board, the bushing and the rolling center
Non- center point abut.
4. according to claim 1 or a kind of 3 described in any item fixtures for steam turbine blade center hole machined, feature
It is, double Finial devices include double dead heads, two rolling centers, and the bottom end of double dead heads is fixed on by screw
On the pedestal, the top of double dead heads is L shape, and two rolling centers are respectively arranged in the double dead heads of the L shape
Riser, on transverse slat, the rolling center passes through the cover screw component respectively and is fixed on double dead heads, the work
Top center point is moved towards the location hole on blade root.
5. a kind of method that steam turbine blade clamping is realized based on fixture described in claim 1, specifically includes the following steps:
S1, the blade is placed in the integral shroud holds seat tightly, blade root is held tightly on seat；
S2, the located lateral that the blade is realized by single Finial device, the double Finial devices of two sides；
S3 realizes being locked for the blade by the integral shroud cohesion device, blade root cohesion device；
S4 dismantles the single Finial device, double Finial devices, realizes clamping；
S5 processes the centre bore of the blade, and machining device for central holes is placed in the one of the blade root cohesion device
Side makes the process tool on machining device for central holes correspond to the corresponding position of the blade and drills, and realizes Steam Turbines
The processing of piece centre bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910689013.7A CN110370044B (en) | 2019-07-29 | 2019-07-29 | Center hole machining clamp for steam turbine moving blade and clamping method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910689013.7A CN110370044B (en) | 2019-07-29 | 2019-07-29 | Center hole machining clamp for steam turbine moving blade and clamping method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110370044A true CN110370044A (en) | 2019-10-25 |
| CN110370044B CN110370044B (en) | 2023-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910689013.7A Active CN110370044B (en) | 2019-07-29 | 2019-07-29 | Center hole machining clamp for steam turbine moving blade and clamping method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110370044B (en) |
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| CN101518876A (en) * | 2009-04-03 | 2009-09-02 | 江南大学 | Special fixture for clamping thin workpieces |
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| CN206702367U (en) * | 2017-05-22 | 2017-12-05 | 哈尔滨汽轮机厂有限责任公司 | A kind of fixture for the T-shaped blade root of linear cutter rhombus blade |
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2019
- 2019-07-29 CN CN201910689013.7A patent/CN110370044B/en active Active
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| JP3172627U (en) * | 2011-10-07 | 2012-01-05 | 伊藤 幸男 | Turbine blade both-end gripping device |
| CN202951901U (en) * | 2012-11-01 | 2013-05-29 | 东方电气集团东方汽轮机有限公司 | Blade perforating device |
| CA2849214A1 (en) * | 2013-04-23 | 2014-10-23 | Siemens Aktiengesellschaft | Wind turbine blade holding arrangement |
| CN203992329U (en) * | 2014-08-01 | 2014-12-10 | 南京赛达机械制造有限公司 | A kind of steam turbine die forging blade special fixture |
| CN206702367U (en) * | 2017-05-22 | 2017-12-05 | 哈尔滨汽轮机厂有限责任公司 | A kind of fixture for the T-shaped blade root of linear cutter rhombus blade |
| CN107838719A (en) * | 2017-12-04 | 2018-03-27 | 无锡透平叶片有限公司 | Fixture for compressor blade dove-tail form blade root machining |
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| CN110370044B (en) | 2023-03-28 |
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Effective date of registration: 20231128 Address after: No. 1800, Huishan Avenue, Huishan Economic Development Zone, Wuxi City, Jiangsu Province Patentee after: WUXI TURBINE BLADE Co.,Ltd. Address before: 214174 No. 18, Yanfeng Road, Yanqiao street, Huishan District, Wuxi City, Jiangsu Province Patentee before: WUXI AIERFU BLADE Co.,Ltd. |
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