A high-precision surface processing device for steam turbine blades

Abstract

The application relates to the technical field of steam turbine blade processing, and discloses a high-precision surface processing device for steam turbine blades, which comprises a device body, an inlet and an outlet are arranged in the middle of the device body, a first fixed plate is fixedly arranged in the inside of the device body, an annular piece is fixedly arranged at the lower side of the inside of the device body, a circular plate is rotatably arranged at the upper end of the annular piece, a plurality of clamping assemblies are arranged on the circular plate, and a polishing assembly is arranged on the upper side of the first fixed plate; the two L-shaped pieces can drive the two second movable plates and the third clamping plate to move close to each other, so that the two second movable plates and the third clamping plate can clamp and fix the two sides of the end part of the steam turbine blade; and the two first sliding blocks can drive the two first movable plates and the first clamping plate to move downwards to extrude and fix the upper side of the end part of the steam turbine blade, so that the end part of the steam turbine blade can be clamped and fixed in multiple directions, and displacement of the steam turbine blade can be avoided.

Description

Technical Field

[0001] This invention belongs to the technical field of turbine blade processing, and more specifically, it relates to a high-precision surface processing device for turbine blades. Background Technology

[0002] Steam turbine blades are one of the most critical components of a steam turbine. Steam performs work by passing through the flow path of the moving and stationary blades. With the rapid development of the steam turbine industry, the workload of post-weld repair, grinding, and milling of steam turbine blades is increasing. Currently, the most common grinding and milling methods in the field of post-weld repair, grinding, and milling of steam turbine blades are manual grinding and manual milling. Because these methods involve direct manual control of the entire process, they not only have poor precision, a large workload, and extremely low efficiency, but also pose indirect risks to human health. Furthermore, existing high-precision surface processing devices for steam turbine blades have the following drawbacks: 1. In the existing technology, the high-precision surface processing equipment for steam turbine blades usually needs to clamp and fix the steam turbine blades before surface processing. However, after surface processing, new steam turbine blades are clamped and fixed, and it is not possible to continuously clamp, fix and transfer several steam turbine blades. As a result, the relevant surface processing equipment on the market has low automation and low surface processing efficiency to varying degrees. 2. In the prior art, after the turbine blade is clamped and fixed at the end by the high-precision surface processing device, several turbine blades need to be transferred. During the transfer process, if the clamping force is insufficient, the turbine blades are prone to displacement, which affects the efficiency of the surface processing of the turbine blades. 3. In the prior art, after the turbine blade is clamped and fixed at the end by the high-precision surface processing device, the turbine blade is subjected to forces in multiple directions during the surface processing process due to the arc-shaped structure of the turbine blade surface. Therefore, it is necessary to clamp and fix the end of the turbine blade in multiple directions.

[0003] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a high-precision surface processing device for turbine blades, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0004] This invention provides a high-precision surface processing device for steam turbine blades, which overcomes the above-mentioned defects in the prior art.

[0005] The purpose and effectiveness of this invention, a high-precision surface processing device for steam turbine blades, are achieved through the following specific technical means: A high-precision surface processing device for steam turbine blades includes a device body with an inlet and outlet at its center. A first fixing plate is fixedly mounted in the center of the device body, and an annular component is fixedly mounted on the lower side of the device body. A circular plate is rotatably mounted on the upper end of the annular component. A plurality of clamping components are arranged in a circumferential array on the circular plate. A grinding component is mounted on the upper side of the first fixing plate. Each clamping component includes a first housing fixed to the circular plate, a second housing fixedly mounted on the lower side of the first housing, a support block fixedly mounted on one side of the second housing, and two L-shaped components slidingly mounted on opposite sides of the inner surface of the first housing. Two first tension springs are provided between the L-shaped parts and the inner sides of the first housing, respectively, on the opposite sides of each L-shaped part. Two first movable plates are provided on the lower side of one end of each L-shaped part. Two first sliders are fixed on the upper side of each of the two first movable plates. The two first sliders slide vertically inside one end of each L-shaped part. Two first push rods are slidably provided on the opposite side of each of the two first movable plates. Two movable blocks are fixed on the opposite end of each of the two first push rods. Two first clamping plates are fixed on the lower side of each of the two first movable plates. Two second clamping plates are fixed on the lower side of each of the two movable blocks.

[0006] In a further technical solution, two guide blocks are symmetrically fixed on the upper side of the interior of the first housing. The two guide blocks are in sliding contact with one end of the two L-shaped parts. The upper ends of the two first sliders are in contact with the lower inclined surfaces of the two guide blocks. Two second sliders are fixed on one side of the two first sliders. The two second sliders slide vertically inside one end of the two L-shaped parts. Two elastic hollow parts are connected between the lower sides of the two second sliders and the interior of one end of the two L-shaped parts. The interiors of the two elastic hollow parts are interconnected with the interiors of the two first sliders.

[0007] In a further technical solution, two second tension springs are provided between the ends of the two first push rods that are far apart from each other and the interiors of the two first movable plates. The interiors of the two first sliders are respectively connected to the interiors of the two first movable plates. A limiting block is fixed on one side of one of the movable blocks, and a limiting groove is provided on one side of the other movable block. The limiting block slides inside the limiting groove.

[0008] In a further technical solution, a first stepper motor is fixedly provided on the inner side of the annular component, the output end of the first stepper motor is fixedly connected to the lower side of the circular plate, the upper end face of the support block corresponds to the arc surface of the turbine blade, and the lower end of the support block slides in contact with the upper side of the first fixed plate.

[0009] In a further technical solution, an annular plate is fixedly provided on the outer side of the annular component. The upper part of the annular plate includes a first flat part, a second flat part, and two inclined parts. The two ends of the first flat part of the annular plate are connected to the two ends of the second flat part of the annular plate through the two inclined parts of the annular plate. The first flat part of the annular plate is lower than the second flat part of the annular plate. A top block is vertically slidably provided inside the second housing. The lower end of the top block is in sliding contact with the upper part of the annular plate.

[0010] In a further technical solution, a sliding plate is fixedly provided at the upper end of the top block, and a first spring is connected between the lower side of the sliding plate and the lower inner side of the second housing. Two top rods are fixedly provided at the upper sides of both ends of the sliding plate, and the upper ends of the two top rods respectively contact the other inclined surfaces of the two L-shaped parts.

[0011] In a further technical solution, two second push rods are fixedly provided on the lower side of the two first movable plates, and two limiting frames are fixedly provided on the other end of the two L-shaped parts. Two first push blocks are slidably provided on the side of the two limiting frames that are close to each other, and two second push blocks are provided on the side of the two first push blocks that are close to each other. Two second movable plates are fixedly provided on the side of the two second movable plates that are close to each other, and two third clamping plates are fixedly provided on the side of the two second movable plates that are close to each other. Two connecting plates are connected between the side of the two first push blocks that are far apart from each other and the lower end of the two second push rods.

[0012] In a further technical solution, one end of each of the two connecting plates is rotatably connected to the lower end of each of the two second push rods, and the other end of each of the two connecting plates is rotatably connected to one side of each of the two first push blocks. Two T-shaped rods are fixedly provided on the side of each of the two first push blocks that are close to each other. One end of each of the two T-shaped rods slides horizontally inside the two second push blocks. Two compression springs are connected between one end of each of the two T-shaped rods and the inside of each of the two second push blocks.

[0013] A further technical solution includes a grinding assembly comprising a vertical plate fixed to the upper side of a first fixed plate. A first frame is fixedly mounted on the upper end of the vertical plate. A second frame is horizontally slidably mounted inside the first frame. A first guide frame is horizontally slidably mounted inside the second frame. A movable rod is vertically slidably mounted inside the first guide frame. A U-shaped frame is fixedly mounted on the lower end of the movable rod. A drive motor is fixedly mounted on one side of the U-shaped frame. A grinding wheel is rotatably mounted on the inner side of the U-shaped frame. The output end of the drive motor is fixedly connected to one side of the grinding wheel. A guide plate is mounted above the first frame. The lower end face of the guide plate corresponds to the arc surface of the turbine blade. Two second fixed plates are fixedly connected to the two sides of the guide plate and the two sides of the first frame, respectively. The upper end of the movable rod slides in contact with the lower end of the guide plate. A second guide frame is fixedly mounted on the upper end of the first guide frame. A third slider is fixedly mounted on the outer side of the movable rod. The third slider slides vertically inside the second guide frame. A second spring is connected between the lower side of the third slider and the lower inner side of the second guide frame.

[0014] In a further technical solution, two fourth sliders are fixedly provided at both ends of the second frame, two second stepper motors are symmetrically fixedly provided on one side of the first frame, two first lead screws are fixedly provided at the output ends of the two second stepper motors, the outer sides of the two first lead screws are respectively in thread contact with the inner ends of the two fourth sliders, the two fourth sliders are respectively in sliding contact with the inner ends of the first frame, a fifth slider is fixedly provided on one side of the first guide frame, the fifth slider is in sliding contact with the inner side of the second frame, a third stepper motor is fixedly provided at one end of the inner side of the fifth slider, a second lead screw is fixedly provided at the output end of the third stepper motor, and the outer side of the second lead screw is in thread contact with the fifth slider.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention uses a limiting block, a limiting groove, and two movable blocks to limit and fix the upper side of the turbine blade tip, thereby clamping and fixing the turbine blade tip in multiple directions and preventing displacement. The inclusion of a limiting frame, a first push block, a second push block, a T-shaped rod, a compression spring, a second push rod, and a connecting plate significantly strengthens the clamping and fixing effect of the two third clamping plates on both sides of the turbine blade tip, preventing displacement during turbine blade surface treatment. The support block, with its upper part corresponding to the arc surface of the turbine blade, provides support to the lower side of the turbine blade while simultaneously limiting its movement.

[0016] This invention utilizes a first frame, a second frame, a first guide frame, and a movable rod. Two second stepper motors activate, driving two first lead screws to rotate forward or reverse. The outer side of the first lead screw contacts a fourth slider, causing the second frame and the first guide frame to move longitudinally within the first frame. Next, a third stepper motor activates, driving the second lead screw to rotate forward or reverse. The outer side of the second lead screw contacts a fifth slider, causing the first guide frame and the movable rod to slide laterally within the second frame. This allows the movable rod to move arbitrarily horizontally, enabling thorough grinding of the turbine blade surface. Furthermore, the arrangement of a guide plate, a second guide frame, a third slider, a second spring, and the movable rod ensures that the upper end of the movable rod remains in sliding contact with the lower end of the guide plate under the force of the second spring, allowing for grinding of the turbine blade surface according to its curvature. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the isometric structure of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA; Figure 4 This is an isometric structural diagram of the internal structure of the device body in this invention; Figure 5 This is an isometric structural diagram of the clamping component in this invention; Figure 6 for Figure 5 A top-view structural diagram; Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure at point BB; Figure 8 for Figure 7 A magnified view of the structure at point E in the middle; Figure 9 for Figure 8 A magnified view of the structure at point F in the middle; Figure 10 for Figure 9 A magnified view of the structure at point G in the middle; Figure 11 for Figure 9 A magnified view of the structure at point H in the middle; Figure 12 This is a front view of the grinding component in this invention. Figure 13 for Figure 12 Schematic diagram of the cross-sectional structure at the CC section; Figure 14 for Figure 12 Schematic diagram of the cross-sectional structure at point DD.

[0020] Explanation of reference numerals in the attached figures: Device body 10, inlet / outlet 11, first fixing plate 12, annular component 13, circular plate 14, first housing 15, second housing 16, support block 17, annular plate 18, top block 19, first stepper motor 20, sliding plate 21, first spring 22, top rod 23, L-shaped component 24, first tension spring 25, first movable plate 26, first push rod 27, second tension spring 28, first clamping plate 29, movable block 30, second clamping plate 31, limiting block 32, limiting groove 33, first slider 34, guide block 35, second slider 36, elastic hollow component 37, second push rod Block 38, T-shaped rod 39, limiting frame 40, second push rod 41, first push block 42, connecting plate 43, second movable plate 44, third clamping plate 45, upright plate 46, first frame 47, second fixed plate 48, guide plate 49, second stepper motor 50, first guide frame 51, movable rod 52, second guide frame 53, U-shaped frame 54, drive motor 55, grinding wheel 56, third slider 57, second spring 58, first lead screw 59, second frame 60, fourth slider 61, third stepper motor 62, second lead screw 63, fifth slider 64, compression spring 65. Detailed Implementation

[0021] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0022] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] As attached Figure 1 To be continued Figure 14 As shown: This invention provides a high-precision surface processing device for steam turbine blades.

[0025] See attached document Figure 1 To be continued Figure 14The device includes a main body 10, with an inlet / outlet 11 in the middle. A first fixing plate 12 is fixedly installed in the middle of the interior of the main body 10. An annular component 13 is fixedly installed on the lower side of the interior of the main body 10. A circular plate 14 is rotatably installed on the upper end of the annular component 13. Several clamping components are arranged in a circumferential array on the circular plate 14. A grinding component is installed on the upper side of the first fixing plate 12. The clamping components include a first housing 15, which is fixed on the circular plate 14. A second housing 16 is fixedly installed on the lower side of the first housing 15. A support block 17 is fixedly installed on one side of the second housing 16. Two L-shaped components 24 are slidably installed on both sides of the interior of the first housing 15, and the two L-shaped components 24 are far apart from each other. Two first tension springs 25 are connected to the inner sides of the first housing 15 on one side. Two first movable plates 26 are respectively provided on the lower side of one end of the two L-shaped parts 24. Two first sliders 34 are respectively fixed on the upper side of the two first movable plates 26. The two first sliders 34 slide vertically inside one end of the two L-shaped parts 24. Two first push rods 27 are respectively slidably provided on the side of the two first movable plates 26 that are close to each other. Two movable blocks 30 are respectively fixed on the end of the two first push rods 27 that are close to each other. Two first clamping plates 29 are respectively fixed on the lower side of the two first movable plates 26. Two second clamping plates 31 are respectively fixed on the lower side of the two movable blocks 30.

[0026] Preferred options are shown in the appendix. Figure 5 To be continued Figure 11 Two guide blocks 35 are symmetrically fixed on the upper side of the interior of the first housing 15. The two guide blocks 35 slide in contact with one end of the two L-shaped parts 24 respectively. The upper ends of the two first sliders 34 are in contact with the lower inclined surfaces of the two guide blocks 35 respectively. Two second sliders 36 are fixed on one side of the two first sliders 34 respectively. The two second sliders 36 slide vertically inside one end of the two L-shaped parts 24 respectively. Two elastic hollow parts 37 are connected between the lower side of the two second sliders 36 and the interior of one end of the two L-shaped parts 24 respectively. The interior of the two elastic hollow parts 37 is interconnected with the interior of the two first sliders 34 respectively.

[0027] Preferred options are shown in the appendix. Figure 5 To be continued Figure 11 Two first push rods 27 are connected to the interior of two first movable plates 26 at their respective ends, and two second tension springs 28 are provided. The interiors of two first sliders 34 are respectively connected to the interiors of two first movable plates 26. A limiting block 32 is fixedly provided on one side of one movable block 30, and a limiting groove 33 is provided on one side of the other movable block 30. The limiting block 32 slides inside the limiting groove 33.

[0028] Preferred options are shown in the appendix. Figure 2 To be continued Figure 5The inner side of the annular part 13 is fixedly provided with a first stepper motor 20. The output end of the first stepper motor 20 is fixedly connected to the lower side of the circular plate 14. The upper end face of the support block 17 corresponds to the arc surface of the turbine blade. The lower end of the support block 17 is in sliding contact with the upper side of the first fixed plate 12.

[0029] Preferred options are shown in the appendix. Figure 2 To be continued Figure 5 An annular plate 18 is fixedly provided on the outer side of the annular member 13. The upper part of the annular plate 18 includes a first flat part, a second flat part, and two inclined parts. The two ends of the first flat part of the annular plate 18 are connected to the two ends of the second flat part of the annular plate 18 through the two inclined parts of the annular plate 18. The first flat part of the annular plate 18 is lower than the second flat part of the annular plate 18. A top block 19 is vertically slidably provided inside the second housing 16. The lower end of the top block 19 is in sliding contact with the upper part of the annular plate 18.

[0030] Preferred options are shown in the appendix. Figure 5 To be continued Figure 11 A slide plate 21 is fixedly provided on the upper end of the top block 19. A first spring 22 is connected between the lower side of the slide plate 21 and the lower inner side of the second housing 16. Two top rods 23 are fixedly provided on the upper sides of both ends of the slide plate 21. The upper ends of the two top rods 23 are in contact with the other end of the inclined surface of the two L-shaped parts 24 respectively.

[0031] Preferred options are shown in the appendix. Figure 5 To be continued Figure 11 Two second push rods 41 are fixedly provided on the lower side of the two first movable plates 26 respectively. Two limiting frames 40 are fixedly provided on the other end of the two L-shaped parts 24 respectively. Two first push blocks 42 are slidably provided on the side of the two limiting frames 40 that are close to each other. Two second push blocks 38 are provided on the side of the two first push blocks 42 that are close to each other respectively. Two second movable plates 44 are fixedly provided on the side of the two second movable plates 44 that are close to each other respectively. Two third clamping plates 45 are fixedly provided on the side of the two first push blocks 42 that are far apart from each other respectively. Two connecting plates 43 are connected between the lower end of the two second push rods 41 and the side of the two first push blocks 42 that are far apart from each other respectively.

[0032] Preferred options are shown in the appendix. Figure 5 To be continued Figure 11 One end of each of the two connecting plates 43 is rotatably connected to the lower end of each of the two second push rods 41, and the other end of each of the two connecting plates 43 is rotatably connected to one side of each of the two first push blocks 42. Two T-shaped rods 39 are fixedly provided on the side of each of the two first push blocks 42 that are close to each other. One end of each of the two T-shaped rods 39 slides horizontally inside the two second push blocks 38. Two compression springs 65 are connected between one end of each of the two T-shaped rods 39 and the inside of each of the two second push blocks 38.

[0033] Preferred options are shown in the appendix. Figure 12 To be continued Figure 14 The grinding assembly includes a vertical plate 46, which is fixed to the upper side of a first fixed plate 12. A first frame 47 is fixedly mounted on the upper end of the vertical plate 46. A second frame 60 is horizontally slidably mounted inside the first frame 47. A first guide frame 51 is horizontally slidably mounted inside the second frame 60. A movable rod 52 is vertically slidably mounted inside the first guide frame 51. A U-shaped frame 54 is fixedly mounted on the lower end of the movable rod 52. A drive motor 55 is fixedly mounted on one side of the U-shaped frame 54. A grinding wheel 56 is rotatably mounted on the inner side of the U-shaped frame 54. The output end of the drive motor 55 is fixedly connected to one side of the grinding wheel 56. A guide plate 49 is provided above the frame 47. The lower end face of the guide plate 49 corresponds to the arc surface of the turbine blade. Two second fixed plates 48 are fixedly connected between the two sides of the guide plate 49 and the two sides of the first frame 47, respectively. The upper end of the movable rod 52 slides in contact with the lower end of the guide plate 49. A second guide frame 53 is fixedly provided at the upper end of the first guide frame 51. A third slider 57 is fixedly provided on the outside of the movable rod 52. The third slider 57 slides vertically inside the second guide frame 53. A second spring 58 is connected between the lower side of the third slider 57 and the lower inside of the second guide frame 53.

[0034] Preferred options are shown in the appendix. Figure 12 To be continued Figure 14 Two fourth sliders 61 are fixedly mounted at both ends of the second frame 60. Two second stepper motors 50 are symmetrically mounted on one side of the first frame 47. Two first lead screws 59 are fixedly mounted at the output ends of the two second stepper motors 50. The outer sides of the two first lead screws 59 are in thread contact with the inner ends of the two fourth sliders 61. The two fourth sliders 61 are in sliding contact with the inner ends of the first frame 47. A fifth slider 64 is fixedly mounted on one side of the first guide frame 51. The fifth slider 64 is in sliding contact with the inner side of the second frame 60. A third stepper motor 62 is fixedly mounted at one end of the inner side of the fifth slider 64. A second lead screw 63 is fixedly mounted at the output end of the third stepper motor 62. The outer side of the second lead screw 63 is in thread contact with the fifth slider 64.

[0035] Specific usage of this invention: Workers insert the turbine blades into the device body 10 through inlet / outlet 11, placing the ends of the turbine blades inside the first housing 15 and positioning them on top of the support block 17. The control system then starts the first stepper motor 20, which rotates the circular plate 14. This rotation moves the four clamping assemblies, which in turn move the turbine blades.

[0036] During the movement of the turbine blades, the lower end of the top block 19 moves from the first flat surface of the annular plate 18 to the inclined surface of the annular plate 18. The lower end of the top block 19 slides into contact with the inclined surface of the annular plate 18, causing the top block 19 to move upwards. The upward movement of the top block 19 drives the slide plate 21 and the two top rods 23 to move upwards. The upper end of the top rod 23 contacts the inclined surface of the other end of the L-shaped member 24, causing the two L-shaped members 24 to move closer together. This movement causes the two second movable plates 44 and the third clamping plate 45 to move closer together, facilitating the clamping and fixing of both sides of the turbine blade end via the two second movable plates 44 and the third clamping plate 45. Furthermore, one end of the two L-shaped members 24 engages with the first housing 15 to limit and fix the upper and lower sides of the turbine blade end. Under the elastic force of the first spring 22, the lower end of the top block 19 remains in sliding contact with the upper part of the annular plate 18.

[0037] Then, the two L-shaped parts 24 move closer together, causing the two first sliders 34 to move closer together. The upper ends of the first sliders 34 contact the lower inclined surface of the guide block 35, causing the two first sliders 34 to move downwards. This downward movement of the two first sliders 34 causes the two first movable plates 26 and the first clamping plate 29 to move downwards, pressing and fixing the upper side of the turbine blade tip. Simultaneously, the downward movement of the two first sliders 34 causes the two second sliders 36 to move downwards, pressing the two elastic hollow parts 37. This pressing generates elastic force in the two elastic hollow parts 37, facilitating the return of the two first sliders 34 to their original position and ensuring that the upper ends of the first sliders 34 remain in sliding contact with the lower side of the guide block 35. The compression of the two elastic hollow parts 37 causes the solution inside each of the two elastic hollow parts 37 to enter the interior of the two first sliders 34, and the solution inside the two first movable plates 26, thus bringing the two first push rods 27 closer together. The two first push rods 27 approach each other, causing the two movable blocks 30 to approach each other as well. This allows the limiting block 32 to slide into the limiting groove 33, so that the limiting block 32, the limiting groove 33, and the two movable blocks 30 cooperate to limit and fix the upper side of the turbine blade tip. This enables the turbine blade tip to be clamped and fixed in multiple directions, preventing displacement of the turbine blade. The two first push rods 27 approach each other, stretching the two second tension springs 28 to generate elastic force. Under the action of the elastic force of the two second tension springs 28, the two first push rods 27 move away from each other and return to their original position.

[0038] Simultaneously, the two L-shaped pieces 24 move closer together, causing the two limiting frames 40 to move closer together. The two limiting frames 40 then move closer together, causing the two first push blocks 42 and the two T-shaped rods 39 to move closer together. The two T-shaped rods 39, in turn, compress the two compression springs 65, generating elastic force. This elastic force acts on the two second movable plates 44, strengthening the clamping and fixing effect of the two third clamping plates 45 on both sides of the turbine blade ends. Simultaneously, the two first movable plates 26 move downwards, causing the two second push rods 41 to move downwards. The downward movement of the two second push rods 41 rotates through the two connecting plates 43, further bringing the two first push blocks 42 closer together. This further brings the two T-shaped rods 39 closer together, further compressing the two compression springs 65 and generating elastic force, further strengthening the clamping and fixing effect of the two third clamping plates 45 on both sides of the turbine blade ends.

[0039] Next, the turbine blades move below the grinding assembly, and the first stepper motor 20 stops. At this time, the lower end of the top block 19 contacts the second flat portion of the annular plate 18, so as to fully clamp and fix the end of the turbine blades by the clamping assembly. Then, the support block 17 provides support for the lower side of the turbine blades.

[0040] Finally, the two second stepper motors 50 start, driving the two first lead screws 59 to rotate forward or reverse. The outer side of the first lead screw 59 contacts the fourth slider 61 via a thread, causing the second frame 60 and the first guide frame 51 to move longitudinally within the first frame 47. Next, the third stepper motor 62 starts, driving the second lead screw 63 to rotate forward or reverse. The outer side of the second lead screw 63 contacts the fifth slider 64 via a thread, causing the first guide frame 51 and the movable rod 52 to slide laterally within the second frame 60, allowing the movable rod 52 to move arbitrarily in the horizontal direction. Under the elastic force of the second spring 58, the upper end of the movable rod 52 is always in sliding contact with the lower end of the guide plate 49, allowing the surface of the turbine blades to be ground according to the arc of the turbine blades. The drive motor 55 starts, driving the grinding wheel 56 to rotate, which grinds the surface of the turbine blades.

[0041] The present invention discloses a high-precision surface processing device for turbine blades. Through the arrangement of a first housing 15, a second housing 16, an annular plate 18, a top block 19, a top rod 23, an L-shaped part 24, a second movable plate 44, and a third clamping plate 45, the lower end of the top block 19 moves from the first flat part of the annular plate 18 to the inclined part of the annular plate 18. By sliding contact between the lower end of the top block 19 and the inclined part of the annular plate 18, the top block 19 moves upward. The upward movement of the top block 19 causes the sliding plate 21 and the two top rods 23 to move upward. The upper end of the top rod 23 contacts the inclined surface of the other end of the L-shaped component 24, bringing the two L-shaped components 24 closer together. This brings the two second movable plates 44 and the third clamping plate 45 closer together, allowing them to clamp and fix the two sides of the turbine blade tip. One end of each L-shaped component 24 engages with the first housing 15 to limit and fix the upper and lower sides of the turbine blade tip. Furthermore, the arrangement of the first slider 34, guide block 35, first movable plate 26, and first clamping plate 29 causes the two L-shaped components 24 to move closer together, bringing the two first sliders 34 closer together. The upper end of each first slider 34 contacts the inclined surface of the guide block 35, causing the two first sliders 34 to move downward. This downward movement of the two first sliders 34 moves the two first movable plates 26 and the first clamping plate 29 downward, pressing and fixing the upper side of the turbine blade tip. Finally, through the arrangement of the second slider 36, the elastic hollow component 37, the first push rod 27, the movable block 30, the second clamping plate 31, the limiting block 32, and the limiting groove 33, the two first movable plates 26 move downwards, causing the two first push rods 27, the movable block 30, and the second clamping plate 31 to move downwards, thereby further squeezing and fixing the upper side of the turbine blade tip. Furthermore, the two first sliders 34 move downwards, causing the two second sliders 36 to move downwards. The two second sliders 36, moving downwards, squeeze the two elastic hollow components 37, thereby drawing the solution inside the two elastic hollow components 37 into the interior of the two first sliders 34, and the solution inside the two first movable plates 26, thus bringing the two first push rods 27 closer together. The two first push rods 27 move closer to each other, causing the two movable blocks 30 to move closer to each other, thereby allowing the limiting block 32 to slide into the limiting groove 33. This allows the limiting block 32, the limiting groove 33, and the two movable blocks 30 to cooperate in limiting and fixing the upper side of the turbine blade end. This enables the turbine blade end to be clamped and fixed in multiple directions, preventing displacement of the turbine blade.

[0042] The present invention discloses a high-precision surface processing device for turbine blades. Through the arrangement of a limiting frame 40, a first push block 42, a second push block 38, a T-shaped rod 39, and a compression spring 65, two L-shaped pieces 24 move closer to each other, causing the two limiting frames 40 to move closer to each other. The two limiting frames 40 move closer to each other, causing the two first push blocks 42 and the two T-shaped rods 39 to move closer to each other. The two T-shaped rods 39 move closer to each other and compress the two compression springs 65 to generate elastic force. The elastic force generated by the two compression springs 65 acts on the two second movable plates 44 to strengthen the clamping and fixing effect of the two third clamping plates 45 on both sides of the turbine blade end. Then, through the setting of the second push rod 41 and the connecting plate 43, the two first movable plates 26 move downward, driving the two second push rods 41 to move downward. The downward movement of the two second push rods 41 causes the two connecting plates 43 to rotate, thereby bringing the two first push blocks 42 closer together. The two first push blocks 42 moving closer together drive the two T-shaped rods 39 to move closer together. The two T-shaped rods 39 moving closer together further compress the two compression springs 65, generating elastic force, so as to further strengthen the clamping and fixing effect of the two third clamping plates 45 on both sides of the turbine blade end, and prevent displacement during the surface treatment of the turbine blade. Finally, through the setting of the support block 17, the upper part of the support block 17 corresponds to the arc surface of the turbine blade, so as to support the lower side of the turbine blade and limit the turbine blade at the same time.

[0043] This invention discloses a high-precision surface processing device for turbine blades. Through the arrangement of a first frame 47, a second frame 60, a first guide frame 51, and a movable rod 52, two second stepper motors 50 are activated, driving two first lead screws 59 to rotate forward or reverse. The outer sides of the first lead screws 59 engage with a fourth slider 61 via threaded contact, thereby causing the second frame 60 and the first guide frame 51 to move longitudinally within the first frame 47. Next, a third stepper motor 62 is activated, driving a second lead screw 63 to rotate forward or reverse. The outer side of the second lead screw 63 engages with a fifth slider 64 via threaded contact, thereby causing the first guide frame 51 and the movable rod 52 to slide laterally within the second frame 60. This allows the movable rod 52 to move arbitrarily in the horizontal direction, enabling thorough grinding of the turbine blade surface. Furthermore, through the arrangement of guide plate 49, second guide frame 53, third slider 57, second spring 58, and movable rod 52, under the elastic force of second spring 58, the upper end of movable rod 52 is always in sliding contact with the lower end of guide plate 49, so that the surface of turbine blades can be polished according to the arc surface of turbine blades.

[0044] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A high-precision surface processing device for steam turbine blades, characterized in that: The device includes a device body (10), with an inlet and outlet (11) in the middle. A first fixing plate (12) is fixedly disposed in the middle of the device body (10). An annular component (13) is fixedly disposed on the lower side of the device body (10). A circular plate (14) is rotatably disposed on the upper end of the annular component (13). Several clamping components are arranged in a circular array on the circular plate (14). A grinding component is disposed on the upper side of the first fixing plate (12). The clamping component includes a first housing (15), which is fixed on the circular plate (14). A second housing (16) is fixedly disposed on the lower side of the first housing (15). A support block (17) is fixedly disposed on one side of the second housing (16). Two L-shaped components (24) are slidably disposed on the inner sides of the first housing (15). 24) Two first tension springs (25) are connected between the two sides of the first housing (15) and the two sides of the L-shaped parts (24) respectively. Two first movable plates (26) are provided on the lower side of one end of the two L-shaped parts (24). Two first sliders (34) are fixed on the upper side of the two first movable plates (26). The two first sliders (34) slide vertically inside one end of the two L-shaped parts (24). Two first push rods (27) are slidably provided on the side of the two first movable plates (26) that are close to each other. Two movable blocks (30) are fixed on the end of the two first push rods (27) that are close to each other. Two first clamping plates (29) are fixed on the lower side of the two first movable plates (26). Two second clamping plates (31) are fixed on the lower side of the two movable blocks (30). Two guide blocks (35) are symmetrically fixed on the upper side of the interior of the first housing (15). The two guide blocks (35) slide in contact with one end of the two L-shaped parts (24). The upper ends of the two first sliders (34) are in contact with the lower inclined surfaces of the two guide blocks (35). Two second sliders (36) are fixed on one side of the two first sliders (34). The two second sliders (36) slide vertically inside one end of the two L-shaped parts (24). Two elastic hollow parts (37) are connected between the lower side of the two second sliders (36) and one end of the two L-shaped parts (24). The interior of the two elastic hollow parts (37) is connected to the interior of the two first sliders (34). Two second tension springs (28) are provided between the two ends of the two first push rods (27) that are far apart from each other and the interior of the two first movable plates (26). The interiors of the two first sliders (34) are respectively connected to the interiors of the two first movable plates (26). A limiting block (32) is fixedly provided on one side of one of the movable blocks (30), and a limiting groove (33) is provided on one side of the other movable block (30). The limiting block (32) slides inside the limiting groove (33). An annular plate (18) is fixedly provided on the outer side of the annular component (13). The upper part of the annular plate (18) includes a first flat part, a second flat part, and two inclined parts. A top block (19) is vertically slidably provided inside the second housing (16). The lower end of the top block (19) is in sliding contact with the upper part of the annular plate (18). The top block (19) is fixedly provided with a sliding plate (21), and two top rods (23) are fixedly provided on the upper sides of both ends of the sliding plate (21). The upper ends of the two top rods (23) are respectively in contact with the other end inclined surfaces of the two L-shaped parts (24). Two second push rods (41) are fixedly provided on the lower side of the two first movable plates (26), and two limiting frames (40) are fixedly provided on the other end of the two L-shaped parts (24). Two first push blocks (42) are slidably provided on the side of the two limiting frames (40) that are close to each other. Two second push blocks (38) are provided on the side of the two first push blocks (42) that are close to each other. Two second movable plates (44) are fixedly provided on the side of the two second push blocks (38) that are close to each other. Two third clamping plates (45) are fixedly provided on the side of the two second movable plates (44) that are close to each other. Two connecting plates (43) are rotatably connected between the side of the two first push blocks (42) that are far apart from each other and the lower end of the two second push rods (41).

2. The high-precision surface processing device for turbine blades according to claim 1, characterized in that: The inner side of the annular component (13) is fixedly provided with a first stepper motor (20), the output end of the first stepper motor (20) is fixedly connected to the lower side of the circular plate (14), the upper end face of the support block (17) corresponds to the arc surface of the turbine blade, and the lower end of the support block (17) slides in contact with the upper side of the first fixed plate (12).

3. The high-precision surface processing device for turbine blades according to claim 2, characterized in that: The two ends of the first flat portion of the annular plate (18) and the two ends of the second flat portion of the annular plate (18) are connected through two inclined portions of the annular plate (18), and the first flat portion of the annular plate (18) is lower than the second flat portion of the annular plate (18).

4. The high-precision surface processing device for turbine blades according to claim 3, characterized in that: A first spring (22) is provided between the lower side of the sliding plate (21) and the lower inner side of the second housing (16).

5. The high-precision surface processing device for turbine blades according to claim 1, characterized in that: One end of each of the two connecting plates (43) is rotatably connected to the lower end of each of the two second push rods (41), and the other end of each of the two connecting plates (43) is rotatably connected to one side of each of the two first push blocks (42). Two T-shaped rods (39) are fixedly provided on the side of each of the two first push blocks (42) that are close to each other. One end of each of the two T-shaped rods (39) slides horizontally inside the two second push blocks (38). Two compression springs (65) are connected between one end of each of the two T-shaped rods (39) and the inside of the two second push blocks (38).

6. The high-precision surface processing device for turbine blades according to claim 1, characterized in that: The grinding assembly includes a vertical plate (46) fixed to the upper side of the first fixed plate (12). A first frame (47) is fixedly mounted on the upper end of the vertical plate (46). A second frame (60) is horizontally slidably mounted inside the first frame (47). A first guide frame (51) is horizontally slidably mounted inside the second frame (60). A movable rod (52) is vertically slidably mounted inside the first guide frame (51). A U-shaped frame (54) is fixedly mounted on the lower end of the movable rod (52). A drive motor (55) is fixedly mounted on one side of the U-shaped frame (54). A grinding wheel (56) is rotatably mounted on the inner side of the U-shaped frame (54). The output end of the drive motor (55) is fixedly connected to one side of the grinding wheel (56). A guide plate (49) is provided above the first frame (47). The lower end face of the guide plate (49) corresponds to the arc surface of the turbine blade. Two second fixing plates (48) are fixedly connected between the two sides of the guide plate (49) and the two sides of the first frame (47). The upper end of the movable rod (52) slides in contact with the lower end of the guide plate (49). A second guide frame (53) is fixedly provided at the upper end of the first guide frame (51). A third slider (57) is fixedly provided on the outer side of the movable rod (52). The third slider (57) slides vertically inside the second guide frame (53). A second spring (58) is connected between the lower side of the third slider (57) and the lower inner side of the second guide frame (53).

7. The high-precision surface processing device for turbine blades according to claim 6, characterized in that: Two fourth sliders (61) are fixedly provided at both ends of the second frame (60). Two second stepper motors (50) are symmetrically fixed on one side of the first frame (47). Two first lead screws (59) are fixedly provided at the output ends of the two second stepper motors (50). The outer sides of the two first lead screws (59) are in thread contact with the inner threads of the two fourth sliders (61). The two fourth sliders (61) slide in contact with the inner ends of the first frame (47). A fifth slider (64) is fixedly provided on one side of the first guide frame (51). The fifth slider (64) slides in contact with the inner side of the second frame (60). A third stepper motor (62) is fixedly provided at one end of the inner side of the fifth slider (64). A second lead screw (63) is fixedly provided at the output end of the third stepper motor (62). The outer side of the second lead screw (63) is in thread contact with the fifth slider (64).

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