A clamping fixture for machining dual-drive steam turbine blades

Abstract

The present invention relates to the technical field of steam turbine blade processing, and proposes a clamping fixture for processing dual-drive steam turbine blades, comprising a base, a fixed block fixedly connected to the base, a first groove provided on the fixed block, a mounting block mounted on the first groove, an adjustment block fixedly connected above the mounting block, side plates fixedly provided on both sides of the adjustment block, a second convex plate mounted on the adjustment block, a second electric push rod mounted on the second convex plate, a first connecting disk rotatably mounted on the second electric push rod, a round table mounted on the first connecting disk, a shell welded above the adjustment block, a transmission assembly mounted on the shell. The above technical solution solves the problem that the existing clamping fixture cannot switch between flexible clamping and rigid clamping according to processing needs, and cannot change the maximum clamping force when switching to flexible clamping.

Description

Technical Field

[0001] The present invention relates to the technical field of steam turbine blade processing, and in particular to a clamping fixture for processing dual-drive steam turbine blades. Background Art

[0002] Turbine blades are crucial components in steam turbines, responsible for converting thermal energy into mechanical energy. Turbine blades need to have extremely high strength, wear resistance and corrosion resistance. The processing precision of steam turbine blades is required to be high. In the manufacturing process of steam turbine blades, clamping fixtures are required. The existing steam turbine blade processing fixtures still have some shortcomings.

[0003] For example, the invention patent with publication number CN112809576B discloses a positioning fixture device for turbine blades, which includes a fixture fixing table, a blade root positioning portion of the turbine blade is on an operating table on the surface of the fixture fixing table; a clamping mechanism is symmetrically arranged on the surface of the operating table on both sides of the blade root positioning portion, the clamping mechanism includes a clamping plate and a driving cylinder for driving the movement of the clamping plate, the clamping plate abuts against the surface of the blade root positioning portion to clamp and fix the turbine blade; the shape of the clamping plate matches the shape of the outer wall of the blade root positioning portion; the clamp improves the clamping stability of the turbine blade by expanding the contact area, and in addition, the purpose of efficient clamping is achieved by changing the relative stability of the clamp itself, so that the clamping effect of the turbine blade is better and the processing is convenient. Although the above device can achieve the function of stable clamping, it cannot be switched between flexible clamping and rigid clamping according to processing needs when in use, and the maximum clamping force cannot be changed when switching to flexible clamping. Summary of the Invention

[0004] The present invention proposes a clamping fixture for processing dual-drive steam turbine blades, which solves the problem that the existing clamping fixture cannot switch between flexible clamping and rigid clamping according to processing needs, and cannot change the maximum clamping force when switching to flexible clamping.

[0005] The technical solutions of the present invention are as follows:

[0006] The cam is provided with a first end fixedly mounted on the adjusting base and a second end fixedly mounted on the adjusting base, wherein the cam is provided with a first end fixedly mounted on the adjusting base and a second end fixedly mounted on the adjusting base.

[0007] As a preferred solution of the present invention, an adjustment component is installed on the base, and the adjustment component includes a first electric push rod slidably installed on the base, a connecting frame is fixedly connected to the first electric push rod, a first convex plate is fixedly connected to the adjustment block, a sliding rod is slidably installed on the connecting frame and the first convex plate, a slide plate is fixedly connected to the sliding rod, connecting rods are fixedly connected on both sides of the connecting frame, a connecting block is fixedly provided on the connecting rod, and a third electric push rod is installed between the first electric push rod and the base.

[0008] As a preferred solution of the present invention, the connecting frame, the connecting rod and the connecting block are fixedly connected to form an integral structure, the slide plate forms a sliding structure between the connecting frame and the first protruding plate through the sliding rod, and the sliding rod is symmetrically distributed on both sides of the slide plate.

[0009] As a preferred solution of the present invention, the top of the connecting block and the side panels abut against each other, and the bottom surfaces of the side panels increase in height from the middle to both sides.

[0010] As a preferred solution of the present invention, the outer wall of the mounting block and the inner wall of the first groove are in contact with each other, and the first grooves are distributed at equal intervals on the upper surface of the fixing block.

[0011] As a preferred solution of the present invention, the first clamping rod and the second clamping rod are evenly distributed along the circumference of the first connecting disk.

[0012] As a preferred solution of the present invention, the transmission assembly includes a rotating wheel rotatably mounted on the outer shell, a worm is fixedly connected to the output shaft of the rotating wheel, a worm wheel is meshedly connected to the bottom of the worm, the worm and the worm wheel are rotatably connected to the outer shell, an outer bushing is fixedly provided in the middle of the worm wheel, an inner rod is fitted inside the outer bushing, the inner rod is fixedly connected to the third connecting disk, a handwheel is installed on the rotating wheel, and the rotating wheel protrudes from the outside of the outer shell.

[0013] As a preferred solution of the present invention, a first spring is fixedly connected to the third slider, a pressure plate is fixedly provided on the first spring, a docking block is fixedly provided on the pressure plate, a second groove is provided on the docking block in the middle of the pressure plate, the outer wall of the docking block and the inner wall of the clamping block are in contact with each other, and one of the side surfaces of the clamping block is an arc surface.

[0014] As a preferred solution of the present invention, the extrusion assembly includes a first push plate slidably installed in the inner rod, a second push plate is fixedly connected to the first push plate, a second spring is fixedly connected to the second push plate, a clamping block is fixedly provided on the second spring, and a third docking groove is provided on the outer sleeve for docking with the clamping block.

[0015] As a preferred solution of the present invention, the clamping block is provided with a first docking groove for docking with the first clamping rod, and the outer sleeve is provided with a second docking groove for docking with the second clamping rod. The first connecting plate, the first clamping rod and the second clamping rod are fixedly connected to form an integral structure.

[0016] The working principle and beneficial effects of the present invention are:

[0017] By setting the first connecting disc truncated table and the transmission assembly, the function of convenient switching between flexible clamping and rigid clamping is realized. When manual drilling of the turbine blade is required, rigid clamping can be used to ensure that the turbine blade can be stably fixed. When assembling the turbine blade, flexible clamping can be used to avoid damage during the assembly process, thereby ensuring the safety of the device when in use. During flexible clamping, the truncated table abuts the first push plate, and the first push plate pushes the card block through the second push plate and the second spring, so that the arc surface structure of the card block fits the third docking groove. The device is assembled If an obstacle is encountered during the process, the clamping block used for clamping will slide after being compressed, so that the second connecting plate drives the inner rod to rotate, and the inner rod will slide in the outer bushing, thereby realizing the protection function and enhancing the safety of the device during use. When it is necessary to switch to rigid clamping, the second electric push rod can be extended to connect the outer bushing and the inner rod with the first clamping rod and the second clamping rod. At this time, the outer bushing rotates and the inner rod will rotate synchronously, thereby realizing the function of converting from flexible clamping to rigid clamping, solving the problem that the existing clamp cannot switch between flexible clamping and rigid clamping according to processing needs.

[0018] Through the transmission assembly and extrusion assembly on the device, when the second electric push rod is extended, the table will gradually push the first push plate and the second push plate toward the four sides of the outer bushing, so that the second spring is gradually compressed, and the clamping force between the clamping block and the outer bushing increases. When the table gradually moves and the first clamping rod and the second clamping rod have not yet docked with the first docking groove and the second docking groove, the device always maintains a flexible clamping state and the clamping force can be adjusted, which enhances the applicability of the device and is suitable for clamping and assembling blades of different weights of impellers, solving the problem that the existing clamp cannot change the maximum clamping force when switching to flexible clamping.

[0019] Through the adjustment assembly, the third electric push rod, the side plate and the adjustment block, when the slide plate and the slide rod are removed from the first convex plate and the connecting frame, the third electric push rod is extended to drive the first electric push rod, the connecting frame, the connecting rod and the connecting block to move upward as a whole. When the connecting block moves upward, the side plate can be pushed upward until the mounting block is completely disengaged from the first groove. At this time, under the action of the inclined surface at the bottom of the side plate, the adjustment block will move on the fixed block as a whole, and the movement method is oblique downward, which is conducive to shaking off debris on the device later and enhances the convenience of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of a clamping fixture for machining dual-drive steam turbine blades according to the present invention;

[0022] Figure 2 yes Figure 1 A magnified schematic diagram of the structure at center A;

[0023] Figure 3 This is a schematic structural diagram of the connection structure between the adjustment block and the second convex plate of the present invention;

[0024] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0025] Figure 5 This is a schematic diagram of the connection structure between the base and the adjustment assembly of the present invention;

[0026] Figure 6 This is a schematic diagram of the connection structure between the fixed block and the adjustment block of the present invention;

[0027] Figure 7 yes Figure 6 A magnified schematic diagram of the structure at C in the middle;

[0028] Figure 8 It is a schematic diagram of the connection structure between the second connection plate and the third connection plate of the present invention;

[0029] Figure 9 This is a schematic diagram of the connection structure between the first slider and the second slider of the present invention;

[0030] Figure 10 It is a schematic diagram of the connection structure of the adjustment block and the installation block of the present invention.

[0031] Figure 1: Base; 2: Fixed block; 3: Adjustment assembly; 301: First electric push rod; 302: Connecting frame; 303: Slide plate; 304: Slide rod; 305: Connecting rod; 306: Connecting block; 4: Side plate; 5: Adjustment block; 6: Mounting block; 7: First groove; 8: First convex plate; 9: Second convex plate; 10: Second electric push rod; 11: First connecting plate; 12: First clamping rod; 13: Round table; 14: Third electric push rod; 15: Second clamping rod; 16: Housing; 17: Transmission assembly; 1701: Rotating wheel; 1702: Worm; 1703: 03. Worm gear; 1704. Outer bushing; 1705. Inner rod; 18. Second connecting plate; 19. Third connecting plate; 20. First slider; 21. Second slider; 22. Third slider; 23. Clamping block; 24. First spring; 25. Pressure plate; 26. Docking block; 27. Extrusion assembly; 2701. First push plate; 2702. Second push plate; 2703. Second spring; 2704. Block; 2705. First docking groove; 2706. Second docking groove; 2707. Third docking groove; 28. Second groove; 29. ​​Arc groove; 30. Handwheel. DETAILED DESCRIPTION

[0032] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0033] Example 1, as Figures 1-10 As shown, this embodiment proposes a clamping fixture for processing dual-drive steam turbine blades, including a base 1, a fixed block 2 is fixedly connected to the base 1, a first groove 7 is opened on the fixed block 2, a mounting block 6 is installed on the first groove 7, an adjustment block 5 is fixedly connected above the mounting block 6, side plates 4 are fixedly provided on both sides of the adjustment block 5, a second convex plate 9 is installed on the adjustment block 5, a second electric push rod 10 is installed on the second convex plate 9, a first connecting plate 11 is rotatably installed on the second electric push rod 10, a round table 13 is installed on the first connecting plate 11, and a welding There is a shell 16, a transmission assembly 17 is installed on the shell 16, an extrusion assembly 27 is provided in the transmission assembly 17, a second connecting disk 18 is installed on the transmission assembly 17, a third connecting disk 19 is rotatably connected to the second connecting disk 18, an arc groove 29 is provided on the third connecting disk 19, a first slider 20 is slidably connected to the second connecting disk 18, a second slider 21 is welded to the first slider 20, a third slider 22 is welded to the second slider 21, a clamping block 23 is installed on the outer side of the third slider 22, and a first clamping rod 12 and a second clamping rod 15 are installed on the first connecting disk 11. When the transmission assembly 17 in the housing 16 is working, it can drive the third connecting disk 19 to rotate. During the rotation of the third connecting disk 19, it will drive the second slider 21 to slide, causing the first slider 20 to slide on the second connecting disk 18, thereby changing the clamping position of the clamping block 23. The device can push the first connecting disk 11 by extending the second electric push rod 10. The first clamping rod 12 and the second clamping rod 15 on the first connecting disk 11 will dock with the transmission assembly 17. At this time, the device can switch from flexible clamping to rigid clamping, so as to adapt to different processing methods and switch the clamping method of the device. When the device uses flexible clamping, the second electric push rod 10 can be extended to make the round table 13 act on the extrusion assembly 27. The extrusion assembly 27 can change the friction between the inner and outer sides of the transmission assembly 17, making it convenient to change the clamping force of the flexible clamping.

[0034] Example 2, as Figures 1-10 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes a clamping fixture for processing dual-drive steam turbine blades.

[0035] In this embodiment, an adjustment component 3 is installed on the base 1, and the adjustment component 3 includes a first electric push rod 301 slidably installed on the base 1, a connecting frame 302 is fixedly connected to the first electric push rod 301, a first convex plate 8 is fixedly connected to the adjustment block 5, a sliding rod 304 is slidably installed on the connecting frame 302 and the first convex plate 8, a slide plate 303 is fixedly connected to the sliding rod 304, a connecting rod 305 is fixedly connected to both sides of the connecting frame 302, a connecting block 306 is fixedly provided on the connecting rod 305, a third electric push rod 14 is installed between the first electric push rod 301 and the base 1, after the sliding rod 304 is installed to the inside of the connecting frame 302 and the first convex plate 8, the first convex plate 8 and the adjustment block 5 can remain in a fixed state, ensuring that the device can work stably. Subsequently, the height of the connecting frame 302 can be adjusted to move the connecting rod 305 and the connecting block 306 upward so as to automatically shake off the debris on the device. The adjusting component 3 can change its own position while changing the position of the adjusting block 5. After the position of the adjusting block 5 is adjusted, it will move obliquely downward and automatically shake off the debris.

[0036] In this embodiment, the connecting frame 302, the connecting rod 305 and the connecting block 306 are fixedly connected to form an integral structure. The slide plate 303 forms a sliding structure with the connecting frame 302 and the first protruding plate 8 through the slide rod 304. The slide rods 304 are symmetrically distributed on both sides of the slide plate 303. The symmetrically distributed slide rods 304 enable the first protruding plate 8 and the connecting frame 302 to be stably docked, thereby enhancing the overall stability of the device.

[0037] In this embodiment, the top of the connecting block 306 is in contact with the side panel 4, and the bottom surface of the side panel 4 increases in height from the middle to both sides. The device can utilize the inclined surface at the bottom of the side panel 4 so that the side panel 4 automatically slides downward after being lifted to a certain height, so that the vibration generated after moving down to the bottom can be used to shake off the debris on the device.

[0038] In this embodiment, the outer wall of the mounting block 6 fits against the inner wall of the first groove 7 to ensure that the mounting block 6 can be stably placed. The first grooves 7 are evenly spaced on the upper surface of the fixing block 2. The mounting block 6 can be adjusted to different first grooves 7, thereby changing the initial clamping position of the device.

[0039] In this embodiment, the first clamping rod 12 and the second clamping rod 15 are evenly distributed along the circumference of the first connecting disk 11. Since the first clamping rod 12 and the second clamping rod 15 are arranged in multiple groups, the device can be more stable when switching from flexible clamping to rigid clamping, thereby enhancing the stability of the device during operation.

[0040] In this embodiment, the transmission assembly 17 includes a rotating wheel 1701 rotatably mounted on the housing 16, a worm 1702 is fixedly connected to the output shaft of the rotating wheel 1701, a worm wheel 1703 is meshedly connected to the lower part of the worm 1702, the worm 1702 and the worm wheel 1703 are all rotatably connected to the housing 16, an outer bushing 1704 is fixedly provided in the middle of the worm wheel 1703, an inner rod 1705 is fitted in the outer bushing 1704, and the inner rod 1705 is fixedly connected to the third connecting plate 19, and a handwheel is installed on the rotating wheel 1701. 30. The rotating wheel 1701 protrudes from the outside of the outer shell 16. By turning the handwheel 30 on the rotating wheel 1701, the worm 1702 is rotated, and the worm 1702 drives the worm wheel 1703 to rotate. When the worm wheel 1703 rotates, the outer bushing 1704 is rotated, and the resistance between the outer bushing 1704 and the inner rod 1705 causes the inner rod 1705 to rotate, thereby driving the third connecting disk 19 to rotate, so that the device can realize the flexible clamping function. When the outer bushing 1704 and the inner rod 1705 are docked with each other, the flexible clamping can be transformed into rigid clamping.

[0041] In this embodiment, a first spring 24 is fixedly connected to the third slider 22, a pressure plate 25 is fixedly provided on the first spring 24, a docking block 26 is fixedly provided on the pressure plate 25, and a second groove 28 is provided on the docking block 26 in the middle of the pressure plate 25. The outer wall of the docking block 26 fits with the inner wall of the clamping block 23. One of the side surfaces of the clamping block 23 is an arc surface. The second groove 28 facilitates the subsequent pulling of the docking block 26 to move the pressure plate 25. The first spring 24 is compressed until the clamping block 23 can be removed from the outside of the third slider 22. The installation angle of the clamping block 23 can be changed, and then arc clamping or flat clamping can be used, thereby enhancing the adaptability of the device.

[0042] In this embodiment, the extrusion assembly 27 includes a first push plate 2701 slidably installed in the inner rod 1705, a second push plate 2702 is fixedly connected to the first push plate 2701, a second spring 2703 is fixedly connected to the second push plate 2702, a clamping block 2704 is fixedly provided on the second spring 2703, and a third docking groove 2707 for docking with the clamping block 2704 is provided on the outer sleeve 1704. When the first push plate 2701 is squeezed, the first push plate 2701 will push the clamping block 2704 through the second spring 2703 on the second push plate 2702. During the gradual compression of the second spring 2703, the pressure of the clamping block 2704 on the outer sleeve 1704 also gradually increases, so that the device can change the clamping force during flexible clamping.

[0043] In this embodiment, a first docking groove 2705 for docking with the first clamping rod 12 is provided on the clamping block 2704, and a second docking groove 2706 for docking with the second clamping rod 15 is provided on the outer sleeve 1704. The first connecting plate 11, the first clamping rod 12 and the second clamping rod 15 are fixedly connected to form an integral structure. When the first clamping rod 12 is docked with the first docking groove 2705 and the second clamping rod 15 is docked with the second docking groove 2706, the device can switch from flexible clamping to rigid clamping, thereby adapting to the clamping method of the adaptive adjustment device to different processing methods of turbine blades.

[0044] Specifically, the present invention is a clamping fixture for processing dual-drive steam turbine blades. First, as Figures 5-10 As shown, the base 1 and the fixed block 2 are used to support the adjusting block 5. When the position of the adjusting block 5 on the fixed block 2 needs to be adjusted, the slide plate 303 and the slide bar 304 on the adjusting assembly 3 are removed from the first convex plate 8 and the connecting frame 302 by sliding the slide bar 304. At this time, the third electric push rod 14 is extended to drive the first electric push rod 301, the connecting frame 302, the connecting rod 305 and the connecting block 306 to move upward as a whole. The upward movement of the connecting block 306 can push the bottom of the side plate 4, driving the adjusting block 5 to move upward. After the mounting block 6 is completely disengaged from the first groove 7, under the action of the inclined surface at the bottom of the side plate 4, the adjusting block 5 will move obliquely downward on the fixed block 2 as a whole until the mounting block 6 on the adjusting block 5 is completely aligned with the first groove 7. The device can change the initial position of the connecting block 306 by extending or shortening the first electric push rod 301. When the connecting block 306 is located on the inclined surface on the other side of the side plate 4, the adjusting block 5 can be moved in the opposite direction. After moving to the appropriate position, the sliding rod 304 is installed on the connecting frame 302 and the first protruding plate 8. At this time, the first protruding plate 8 and the adjusting block 5 remain in a fixed state, so that the device can stably clamp the turbine blades.

[0045] like Figures 1-4 As shown, when the device is used to assemble turbine blades, in order to avoid damage to the blades due to collisions during the assembly process, the device can be switched from rigid clamping to flexible clamping. When manually drilling the turbine blades, the device needs to be switched from flexible clamping to rigid clamping, as shown in FIG. Figures 5-10As shown, the hand wheel 30 is rotated to rotate the wheel 1701, and the wheel 1701 and the worm 1702 on the outer shell 16 rotate, which will drive the worm wheel 1703 and the outer bushing 1704 to rotate. The resistance between the outer bushing 1704 and the inner rod 1705 will cause the outer bushing 1704 to drive the inner rod 1705 to rotate, and then drive the third connecting disk 19 to rotate. When the third connecting disk 19 rotates, the inner wall of the arc groove 29 will abut the outer wall of the second slider 21, so that the first slider 20 on the second slider 21 moves on the second connecting disk 18, thereby synchronously adjusting the initial positions of multiple third sliders 22 and the clamping block 23 to realize the clamping function. The device can switch the clamping surface according to the structure of the turbine blade clamping position. By pulling the inner wall of the second groove 28, the docking block 26 is pulled, the pressure plate 25 is moved, and the first spring 24 is compressed until the clamping block 23 can be removed from the outer side of the third slider 22. The installation angle of the clamping block 23 is changed, and the clamping is performed using a curved surface or a flat surface. When the outer sleeve 1704 and the inner rod 1705 are docked with each other, the flexible clamping can be converted to a rigid clamping. First, the second electric push rod 10 on the second protruding plate 9 is extended, so that the first clamping rod 12 and the second clamping rod 15 are installed in the second docking groove 2706 in the outer sleeve 1704 and the first docking groove 2705 in the clamping block 2704. At this time, the outer sleeve 1704 and the inner rod 1705 are docked. When the worm gear 1703 and the outer sleeve 1704 rotate, the inner rod 1705 and the third connecting plate 19 rotate synchronously, thereby achieving the transition from flexible clamping to rigid clamping. In flexible clamping, the clamping force can be adjusted, such as Figure 4 As shown, when the table 13 squeezes the first push plate 2701, the first push plate 2701 will push the block 2704 through the second spring 2703 on the second push plate 2702. During the gradual compression of the second spring 2703, the pressure of the block 2704 on the outer sleeve 1704 also gradually increases, so that the resistance between the inner rod 1705 and the outer sleeve 1704 increases, so that the device can change the clamping force during flexible clamping.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A clamping fixture for machining dual-drive steam turbine blades, comprising a base, characterized in that: The base is fixedly connected to a fixing block, the fixing block is provided with a first groove, the mounting block is installed on the first groove, an adjusting block is fixedly connected to the mounting block, side plates are fixedly provided on both sides of the adjusting block, a second convex plate is installed on the adjusting block, a second electric push rod is installed on the second convex plate, the first connecting plate is rotatably installed on the second electric push rod, a round table is installed on the first connecting plate, a shell is welded above the adjusting block, a transmission assembly is installed on the shell, an extrusion assembly is provided in the transmission assembly, a second connecting plate is installed on the transmission assembly, the second connecting plate is rotatably connected to the third connecting plate, an arc groove is provided on the third connecting plate, the first connecting plate is slidably connected to the first slider, the second slider is welded on the first slider, the third slider is welded on the second slider, a clamping block is installed on the outer side of the third slider, and the first connecting plate is provided with a first clamping rod and a second clamping rod; The first clamping rod and the second clamping rod are evenly distributed along the circumference of the first connecting disk; The transmission assembly includes a rotating wheel rotatably mounted on the housing, a worm fixedly connected to the output shaft of the rotating wheel, a worm wheel meshingly connected to the lower portion of the worm, the worm and the worm wheel are rotatably connected to the housing, an outer bushing fixedly provided in the middle of the worm wheel, an inner rod fitted in the outer bushing, the inner rod and the third connecting plate are fixedly connected, a hand wheel is mounted on the rotating wheel, and the rotating wheel protrudes from the outer side of the housing; The third slider is fixedly connected to the first spring, the first spring is fixedly provided with a pressure plate, the pressure plate is fixedly provided with a docking block, the docking block in the middle of the pressure plate is provided with a second groove, the outer wall of the docking block and the inner wall of the clamping block are in contact with each other, and one side surface of the clamping block is an arc surface; The extrusion assembly includes a first push plate slidably mounted in the inner rod, a second push plate fixedly connected to the first push plate, a second spring fixedly connected to the second push plate, a clamping block fixedly provided on the second spring, and a third docking groove for docking with the clamping block is formed on the outer bushing; The clamping block is provided with a first docking groove for docking with the first clamping rod, the outer bushing is provided with a second docking groove for docking with the second clamping rod, and the first connecting plate, the first clamping rod and the second clamping rod are fixedly connected to form an integral structure.

2. The clamping fixture for machining dual-drive steam turbine blades according to claim 1, characterized in that: An adjustment component is installed on the base, and the adjustment component includes a first electric push rod slidably installed on the base, a connecting frame is fixedly connected to the first electric push rod, a first convex plate is fixedly connected to the adjustment block, a sliding rod is slidably installed on the connecting frame and the first convex plate, a slide plate is fixedly connected to the sliding rod, connecting rods are fixedly connected on both sides of the connecting frame, a connecting block is fixedly provided on the connecting rod, and a third electric push rod is installed between the first electric push rod and the base.

3. The clamping fixture for machining dual-drive steam turbine blades according to claim 2, characterized in that: The connecting frame, the connecting rod and the connecting block are fixedly connected to form an integral structure. The slide plate forms a sliding structure between the connecting frame and the first convex plate through the sliding rod. The sliding rods are symmetrically distributed on both sides of the slide plate.

4. The clamping fixture for machining dual-drive steam turbine blades according to claim 3, characterized in that: The top of the connecting block and the side plates are in contact with each other, and the bottom surfaces of the side plates increase in height from the middle to both sides.

5. The clamping fixture for machining dual-drive steam turbine blades according to claim 1, characterized in that: The outer wall of the mounting block and the inner wall of the first groove are fitted together, and the first grooves are distributed at equal intervals on the upper surface of the fixing block.

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