CN215881263U - Accurate grinding clamp for back arc of steam turbine blade assembly - Google Patents
Accurate grinding clamp for back arc of steam turbine blade assembly Download PDFInfo
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- CN215881263U CN215881263U CN202122182415.3U CN202122182415U CN215881263U CN 215881263 U CN215881263 U CN 215881263U CN 202122182415 U CN202122182415 U CN 202122182415U CN 215881263 U CN215881263 U CN 215881263U
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Abstract
The utility model discloses a fine grinding fixture for assembling back arcs of turbine blades, which comprises a bottom plate, wherein a positioning plate is fixedly arranged at the top of the bottom plate, a blade root block is fixedly arranged at the top of the bottom plate and positioned on the right side of the positioning plate, a blade shroud block is fixedly arranged at the top of the bottom plate and positioned on the left side of the positioning plate, threaded rods are rotatably arranged in inner cavities of the blade root block and the blade shroud block, and threaded sleeves are arranged on the outer surfaces of the two threaded rods in a threaded manner. The rotary valve block drives the threaded rod to rotate, the threaded rod drives the threaded sleeve to move, and the threaded sleeve moves to drive the blade root pressing plate and the blade shroud pressing plate to move, so that the blade root pressing plate and the blade shroud pressing plate move to fix the blade root and the blade shroud of the steam turbine blade, the steam turbine blade is prevented from moving in the fine grinding process, errors in fine grinding are avoided, the operation is simple, the structure positioning is accurate, the clamping is stable, the stability is good, and the actual processing requirements are well met.
Description
Technical Field
The utility model relates to the field of steam turbines, in particular to a fine grinding clamp for a back arc of steam turbine blade assembly.
Background
In the steam turbine blade, certain assembled inner and back arc type blades are difficult to guarantee design requirements due to manufacturing tolerances for certain reasons in the milling process, so that subsequent assembly quality is influenced, the blades need to be ground at high precision in the subsequent processing, and therefore a channel clamp is needed to fix the steam turbine blade.
The existing accurate grinding clamp for the back arc of the steam turbine blade assembly is difficult to guarantee the machining precision requirement in the using process, so that the precision of the steam turbine blade is easy to deviate in the accurate grinding process of the back arc of the steam turbine blade assembly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a fine grinding clamp for assembling back arcs of turbine blades, which solves the problems in the prior art.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a steam turbine blade assembly back of body arc's correct grinding anchor clamps, includes the bottom plate, the top fixed mounting of bottom plate has the locating plate, the top of bottom plate and the right-hand fixed mounting who is located the locating plate have the root of leaf piece, the top of bottom plate and the left fixed mounting who is located the locating plate have the tip cap piece, the inner chamber of root of leaf piece and tip cap piece is all rotated and is installed the threaded rod, two the thread bush is installed to the equal screw thread of surface of threaded rod, is located the right side the surface fixed mounting of thread bush has the tip cap clamp plate, is located the left side the surface fixed mounting of thread bush has the root clamp plate, the left side fixed mounting of root of leaf piece has the blade root locating piece.
Preferably, the top end of the threaded rod on the left side penetrates through the blade crown block and extends to the outside of the blade crown block, and the top end of the threaded rod on the right side penetrates through the blade root block and extends to the outside of the blade root block.
Preferably, a first positioning baffle is fixedly mounted at the top of the positioning plate, and a second positioning baffle is fixedly mounted at the top of the positioning plate and in front of the first positioning baffle.
Preferably, a molded line cushion block is fixedly installed between the first positioning baffle and the second positioning baffle, and the molded line cushion block is arc-shaped.
Preferably, two equal fixed mounting in top of threaded rod has the rotary valve piece, the equal fixed mounting in both sides at leaf root piece and leaf crown piece top has the stopper.
Preferably, the two limiting blocks positioned at the top of the blade root block are connected with the two sides of the blade root pressure plate in a sliding mode, and the two limiting blocks positioned at the top of the blade shroud block are connected with the two sides of the blade shroud pressure plate in a sliding mode.
The utility model has the technical effects and advantages that:
(1) the threaded rod is driven to rotate by the rotary valve block, the threaded rod drives the threaded sleeve to move, and the threaded sleeve moves to drive the blade root pressing plate and the blade shroud pressing plate to move, so that the blade root pressing plate and the blade shroud pressing plate move to fix the blade root and the blade shroud of the steam turbine blade, and the steam turbine blade is prevented from moving in the fine grinding process, so that the error of fine grinding is caused, the operation is simple, the structure positioning is accurate, the clamping is stable, the stability is good, and the actual processing requirement is well met;
(2) the blade root pressing plate and the blade shroud pressing plate slide on the two limiting blocks, so that the blade root pressing plate and the blade shroud pressing plate can move more accurately, the blade root pressing plate and the blade shroud pressing plate are prevented from offsetting when moving, and the blade root pressing plate and the blade shroud pressing plate are not fixed and firm with the turbine blade.
Drawings
FIG. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is a schematic view of a blade root block according to the present invention;
FIG. 3 is a schematic view of the internal structure of the tip shroud block of the present invention.
In the figure: 1. a base plate; 2. positioning a plate; 3. leaf and root tuber; 4. a tip shroud block; 5. a threaded rod; 6. a threaded sleeve; 7. pressing a blade shroud; 8. a blade root pressure plate; 9. a blade root positioning block; 10. a first positioning baffle; 11. a second positioning baffle; 12. molded line cushion blocks; 13. rotating the valve block; 14. and a limiting block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a fine grinding clamp for a back arc of a turbine blade assembly shown in figures 1-3, which comprises a bottom plate 1, wherein a positioning plate 2 is fixedly arranged at the top of the bottom plate 1, a blade root block 3 is fixedly arranged at the top of the bottom plate 1 and positioned on the right side of the positioning plate 2, a blade crown block 4 is fixedly arranged at the top of the bottom plate 1 and positioned on the left side of the positioning plate 2, threaded rods 5 are rotatably arranged in inner cavities of the blade root block 3 and the blade crown block 4, threaded sleeves 6 are respectively arranged on the outer surfaces of the two threaded rods 5 in a threaded manner, a blade crown pressing plate 7 is fixedly arranged on the outer surface of the threaded sleeve 6 positioned on the right side, a blade root pressing plate 8 is fixedly arranged on the outer surface of the threaded sleeve 6 positioned on the left side, and a blade root positioning block 9 is fixedly arranged on the left side of the blade root block 3;
the top end of the threaded rod 5 positioned on the left side penetrates through the blade shroud block 4 and extends to the outside of the blade shroud block 4, the top end of the threaded rod 5 positioned on the right side penetrates through the blade root block 3 and extends to the outside of the blade root block 3, the top part of the positioning plate 2 is fixedly provided with a first positioning baffle 10, the top part of the positioning plate 2 is fixedly provided with a second positioning baffle 11 in front of the first positioning baffle 10, a molded line cushion block 12 is fixedly arranged between the first positioning baffle 10 and the second positioning baffle 11, the molded line cushion block 12 is arc-shaped, a rotary valve block 13 is fixedly arranged at the top parts of the two threaded rods 5, limit blocks 14 are fixedly arranged on the two sides of the top parts of the blade shroud block 3 and the blade shroud block 4, one side, opposite to the two limit blocks 14, positioned on the top part of the blade shroud block 3 is slidably connected with the two sides of the blade root pressure plate 8, and one side, opposite to the two limit blocks 14, positioned on the top part of the blade shroud block 4 is slidably connected with the two sides of the blade shroud pressure plate 7.
The working principle of the utility model is as follows: firstly, when a user uses the steam turbine blade to assemble the fine grinding fixture of the back arc, the steam turbine blade is firstly placed on the molded line cushion block 12 and is positioned through the first positioning baffle 10 and the second positioning baffle 11, the blade root of the steam turbine blade is placed on the blade root positioning block 9, at the moment, the rotating valve block 13 is rotated, the rotating valve block 13 drives the threaded rod 5 to rotate, at the moment, according to the thread meshing principle, the threaded rod 5 drives the threaded sleeve 6 to move, the threaded sleeve 6 moves to drive the blade root pressing plate 8 and the blade shroud pressing plate 7 to move, so that the blade root pressing plate 8 and the blade shroud pressing plate 7 move to fix the blade root and the blade shroud of the steam turbine blade, thereby preventing the steam turbine blade from moving in the fine grinding process, and further preventing the error in the fine grinding, and having simple operation, accurate structure positioning, stable clamping and good stability, and well meeting the actual processing requirements, and in the process that the blade root pressing plate 8 and the blade shroud pressing plate 7 move, the blade root pressing plate 8 and the blade shroud pressing plate 7 slide on the two limiting blocks 14, so that the blade root pressing plate 8 and the blade shroud pressing plate 7 can move more accurately, the blade root pressing plate 8 and the blade shroud pressing plate 7 are prevented from offsetting when moving, and the blade root pressing plate 8 and the blade shroud pressing plate 7 do not fix the turbine blade firmly.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The standard parts used by the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the description of the attached drawings.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A fine grinding clamp for assembling back arc of a turbine blade comprises a bottom plate (1) and is characterized in that, a positioning plate (2) is fixedly arranged at the top of the bottom plate (1), a leaf root block (3) is fixedly arranged at the top of the bottom plate (1) and positioned at the right side of the positioning plate (2), the top of the bottom plate (1) and the left of the positioning plate (2) are fixedly provided with a blade crown block (4), threaded rods (5) are installed in the inner cavities of the blade root block (3) and the blade shroud block (4) in a rotating mode, threaded sleeves (6) are installed on the outer surfaces of the two threaded rods (5) in a threaded mode, blade shroud pressing plates (7) are fixedly installed on the outer surfaces of the threaded sleeves (6) located on the right side, blade root pressing plates (8) are fixedly installed on the outer surfaces of the threaded sleeves (6) located on the left side, and a blade root positioning block (9) is fixedly arranged on the left side of the blade root block (3).
2. A refining jig for the back arc of steam turbine blade assembly according to claim 1, characterized in that the top end of the threaded rod (5) on the left side penetrates the tip shroud block (4) and extends to the outside of the tip shroud block (4), and the top end of the threaded rod (5) on the right side penetrates the root block (3) and extends to the outside of the root block (3).
3. The fine grinding fixture for the back arc of the turbine blade assembly according to claim 1, wherein a first positioning baffle (10) is fixedly installed at the top of the positioning plate (2), and a second positioning baffle (11) is fixedly installed at the top of the positioning plate (2) and in front of the first positioning baffle (10).
4. The fine grinding clamp for the back arc of the steam turbine blade assembly according to claim 3, wherein a profile cushion block (12) is fixedly arranged between the first positioning baffle (10) and the second positioning baffle (11), and the profile cushion block (12) is in the shape of an arc.
5. The fine grinding fixture for the back arc of the steam turbine blade assembly according to claim 1, characterized in that a rotary valve block (13) is fixedly mounted at the top of each of the two threaded rods (5), and a limiting block (14) is fixedly mounted at both sides of the top of each of the root block (3) and the tip shroud block (4).
6. The clamp for finely grinding the back arc of the blade assembly of the steam turbine as claimed in claim 5, wherein the opposite sides of the two stoppers (14) at the top of the blade root block (3) are slidably connected with the two sides of the blade root pressure plate (8), and the opposite sides of the two stoppers (14) at the top of the blade shroud block (4) are slidably connected with the two sides of the blade shroud pressure plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122182415.3U CN215881263U (en) | 2021-09-10 | 2021-09-10 | Accurate grinding clamp for back arc of steam turbine blade assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122182415.3U CN215881263U (en) | 2021-09-10 | 2021-09-10 | Accurate grinding clamp for back arc of steam turbine blade assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215881263U true CN215881263U (en) | 2022-02-22 |
Family
ID=80336818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122182415.3U Active CN215881263U (en) | 2021-09-10 | 2021-09-10 | Accurate grinding clamp for back arc of steam turbine blade assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215881263U (en) |
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2021
- 2021-09-10 CN CN202122182415.3U patent/CN215881263U/en active Active
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