An aviation turbine blade connecting joint plasma arc precision welding device

Abstract

The application relates to the technical field of blade welding, and discloses an aviation turbine blade connecting joint plasma arc precision welding device, which comprises a fuselage, a motor is fixedly arranged at the inner wall of the fuselage, a control console is rotationally arranged at the inner wall of the fuselage, a welding gun is slidably arranged at the top of the inner wall of the fuselage, a six-jaw chuck is fixedly arranged at the top of the outer wall of the control console, and a material placing table is fixedly arranged at the top of the outer wall of the six-jaw chuck. When the six-jaw chuck is started, the moving block is driven to move, the contact block first contacts the blade, and the contact block is maximally attached to the blade. When the contact block rotates, a pushing force is generated on the stress plate. When the contact block rotates by a certain angle, the moving block is about to stop moving, the inclined surface of the special-shaped frame is contacted, a pushing force is generated on the special-shaped frame, the special-shaped frame is forced to enter the inside of the sliding block to limit the sliding block. The simple and accurate clamping structure can provide targeted support at each stress point of the blade, and guarantees that the profile precision after welding meets the standard.

Description

Technical Field

[0001] This invention relates to the field of blade welding technology, specifically to a plasma arc precision welding device for connecting joints of aero-turbine blades. Background Technology

[0002] The plasma arc precision welding device uses a high-compression plasma arc heat source to perform precision fusion welding on the high-temperature alloy irregular joints of turbine blades. It can precisely control the arc energy, protective gas flow and welding trajectory, effectively control welding thermal deformation and reduce metallurgical defects in the joint.

[0003] Among them, irregular blades have no flat clamping reference surface, uneven distribution of structural rigidity, and are mostly made of thin-walled high-temperature alloy material. Most rigid clamps have difficulty finding stable clamping force points. Slight uneven force will cause loosening and displacement, which will directly lead to poor weld formation, such as incomplete fusion and incomplete penetration, making the joint a weak point in the structure. Under extreme engine loads, it is prone to failure. To address the above problems, the following solutions are proposed. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a plasma arc precision welding device for aircraft turbine blade connecting joints, including a fuselage, a motor fixedly installed on the inner wall of the fuselage, a control console rotatably installed on the inner wall of the fuselage, a welding torch slidably installed on the top of the inner wall of the fuselage, a six-jaw chuck fixedly installed on the top of the outer wall of the control console, and a feeding table fixedly installed on the top of the outer wall of the six-jaw chuck, and further including:

[0005] The braking mechanism is slidably installed on the inner wall of the feeding platform;

[0006] The braking mechanism includes a movable block that is slidably connected to the inner wall of the feeding platform, and a force-bearing block that is slidably connected to the inner wall of the movable block.

[0007] The protective mechanism is rotatably mounted on the side wall of the braking mechanism;

[0008] The protective mechanism includes a compression rod that is rotatably connected to the side wall of the force-bearing block;

[0009] The storage mechanism is slidably installed on the inner wall of the feeding platform;

[0010] The storage mechanism includes a collection block that is slidably connected to the inner wall of the discharge platform.

[0011] Preferably, the braking mechanism includes:

[0012] The contact component is slidably disposed on the inner wall of the feeding platform;

[0013] A limiting component is rotatably mounted on the outer wall of the contact component;

[0014] When the contact component comes into contact with the blade, the contact component moves again as the six-jaw chuck continues to apply force.

[0015] Preferably, the protective mechanism includes:

[0016] The amplification component is rotatably mounted on the side wall of the contact component;

[0017] The scraping component is rotatably mounted on the outer wall of the feeding platform;

[0018] When the contact component moves, it causes the scraper component to move and forces the scraper component to rotate.

[0019] Preferably, the storage mechanism includes:

[0020] The collision component is slidably installed on the inner wall of the feeding platform;

[0021] As the scraping component continues to rotate, it forces the collision component to move under pressure.

[0022] Preferably, the contact assembly includes a spring fixedly connected to the side wall of the force-bearing block, and a contact block is rotatably connected to the end of the force-bearing block away from the moving block;

[0023] When the six-jaw chuck is activated, it drives the moving block to move. When the force-bearing block moves a certain distance, the contact block first contacts the blade and gradually rotates.

[0024] Preferably, the limiting component includes a force plate rotatably connected to the side wall of the contact block, a spring sheet fixedly connected to the inner wall of the force block, a sliding block rotatably connected to the bottom of the outer wall of the force plate, and a shaped frame slidably connected to the top of the inner wall of the feeding platform.

[0025] When the contact block rotates, it generates a pushing force on the force plate, causing the force plate to move. During the movement, it generates a pushing force on the spring. When the contact block rotates at a certain angle, the force block moves relative to the moving block and applies a pushing force to the spring. When the moving block is about to stop moving, it contacts the inclined surface of the irregular frame and generates a pushing force on the irregular frame, forcing the irregular frame to enter the sliding block to complete the restriction of the sliding block.

[0026] Preferably, the amplification component includes a flexible block that is slidably connected to the inner wall of the contact block;

[0027] When the contact block rotates in contact with the blade, the contact block generates a thrust on the compression rod, which in turn applies a thrust to the flexible block. Under the thrust of the compression rod, the flexible block gradually comes into contact with the blade.

[0028] Preferably, the scraping assembly includes a shaped scraper rotatably connected to the side wall of the feeding platform, a torsion spring sleeved on the inner wall of the shaped scraper, and an inclined block slidably connected to the inner wall of the force-bearing block.

[0029] When the force-bearing block moves the tilting block to the right side of the torsion spring, the tilting block applies a pushing force to the irregular scraper under the elastic force of the spring, causing the irregular scraper to rotate and apply pressure to the torsion spring. The irregular scraper continuously contacts the surface of the contact block during rotation.

[0030] Preferably, the collision component includes a spring clip fixedly connected to the side wall of the collection block;

[0031] When the irregularly shaped scraper rotates, it comes into contact with several protruding inclined blocks on the left side of the collection block. When it resets, it comes into contact with the inclined surface on the left side of the collection block again. At this time, the debris attached to the surface of the irregularly shaped scraper is intercepted by the collection block and gradually enters the interior of the collection block through the inclined surface.

[0032] The present invention has the following beneficial effects:

[0033] (1) When the six-jaw chuck is activated, the moving block moves and the contact block first contacts the blade and rotates under force, forming maximum fit with the blade. When the contact block rotates, it generates a thrust on the force plate, causing the force plate to move under force. When the contact block rotates at a certain angle, as the moving block continues to move, the force block applies a thrust to the spring. When the moving block is about to stop moving, it contacts the inclined surface of the irregular frame and generates a thrust on the irregular frame, forcing the irregular frame to enter the sliding block to complete the restriction of the sliding block. Compared with the array composed of hundreds of independently liftable micro support columns, the structure of the above components is too complicated. This device, with its simple and precise clamping structure, can provide targeted support at each force point of the blade, ensuring that the surface accuracy meets the standards after welding.

[0034] (2) When the contact block of the present invention rotates in contact with the blade, the contact block generates a thrust on the compression rod, which in turn exerts a thrust on the flexible block. The flexible block is in an inclined state inside the contact block. Under the thrust of the compression rod, the flexible block gradually moves out of the contact block and comes into contact with the blade. When the flexible block moves, it exerts a tension on the spring sheet on its side wall. As the contact block rotates continuously, after the flexible block and the blade are in full contact, the compression rod is gradually compressed by the thrust of the flexible block and rotates during the compression process. By using the above components, the contact surface between the contact block and the blade is increased, which can significantly reduce the pressure per unit area and prevent local stress concentration.

[0035] (3) The force block of the present invention is in the state of being about to be reset. At this time, the force block drives the inclined block to gradually come into contact with the irregular scraper. When the inclined block moves to the right side of the torsion spring, the inclined block pops out under the elastic force of the spring plate, applies a thrust to the irregular scraper, causing the irregular scraper to rotate and apply pressure to the torsion spring. The irregular scraper continuously contacts the surface of the contact block during rotation, causing the contact block to rotate. Through the above components, hard residues such as welding slag and metal spatter can be scraped off, preventing the residue from raising the contact surface and causing the blade clamping to shift, ensuring that the form and position tolerance of the turbine blade welding meets the requirements.

[0036] (4) When the irregular scraper of the present invention rotates under force, the irregular scraper contacts several protruding inclined blocks on the left side of the collection block, and generates a pushing force on the collection block through the inclined surface of the protruding blocks on the left side of the collection block, causing the collection block to move. When the collection block moves, it applies a pushing force to the spring piece 1. When the irregular scraper resets, it contacts the inclined surface on the left side of the collection block again. At this time, the debris attached to the surface of the irregular scraper is intercepted by the collection block and gradually enters the interior of the collection block through the inclined surface. Through the above components, the debris attached to the surface of the irregular scraper is removed in segments and the debris is collected in a concentrated manner to ensure the cleanliness of the surface of the irregular scraper. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention;

[0040] Figure 3 This is a schematic cross-sectional view of part of the structure of the present invention;

[0041] Figure 4 This is a schematic cross-sectional view of the braking mechanism of the present invention;

[0042] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0043] Figure 6 This is a schematic cross-sectional view of the amplification component of the present invention;

[0044] Figure 7 This is a schematic cross-sectional view of the scraping component of the present invention;

[0045] Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle;

[0046] Figure 9 This is a cross-sectional schematic diagram of the collision component of the present invention.

[0047] The attached diagram lists the components represented by each number as follows:

[0048] In the diagram: 1. Braking mechanism; 11. Contact component; 12. Limiting component; 13. Machine body; 14. Motor; 15. Control console; 16. Welding torch; 17. Six-jaw chuck; 18. Feeding platform; 111. Moving block; 112. Force-bearing block; 113. Spring; 114. Contact block; 121. Force-bearing plate; 122. Spring; 123. Sliding block; 124. Irregular frame; 2. Protective mechanism; 21. Amplification component; 22. Scraping component; 211. Compression rod; 212. Flexible block; 221. Irregular scraper; 222. Torsion spring; 223. Inclined block; 3. Storage mechanism; 31. Collision component; 311. Collection block; 312. Spring one. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Example 1, please refer to Figures 1-9 This invention relates to a plasma arc precision welding device for aircraft turbine blade connecting joints, comprising a fuselage 13, a motor 14 fixedly mounted on the inner wall of the fuselage 13, a control console 15 rotatably mounted on the inner wall of the fuselage 13, a welding torch 16 slidably mounted on the top of the inner wall of the fuselage 13, a six-jaw chuck 17 fixedly mounted on the top of the outer wall of the control console 15, and a feeding table 18 fixedly mounted on the top of the outer wall of the six-jaw chuck 17. The device also includes:

[0051] Braking mechanism 1 is slidably disposed on the inner wall of the feeding platform 18;

[0052] The braking mechanism 1 includes a movable block 111 that is slidably connected to the inner wall of the feeding platform 18, and a force-bearing block 112 that is slidably connected to the inner wall of the movable block 111.

[0053] Protective mechanism 2 is rotatably mounted on the side wall of braking mechanism 1;

[0054] The protective mechanism 2 includes a compression rod 211 that is rotatably connected to the side wall of the force-bearing block 112;

[0055] Storage mechanism 3 is slidably disposed on the inner wall of the feeding platform 18;

[0056] The storage mechanism 3 includes a collection block 311 that is slidably connected to the inner wall of the discharge platform 18.

[0057] Braking mechanism 1 includes:

[0058] Contact component 11 is slidably disposed on the inner wall of the feeding table 18;

[0059] Limiting component 12 is rotatably disposed on the outer wall of contact component 11;

[0060] In this process, the worker places the blade to be welded on the surface of the feeding table 18 and simultaneously activates the six-jaw chuck 17 to precisely clamp the blade. After confirming that the blade is stably clamped, the worker starts the motor 14 and the welding gun 16. The motor 14 drives the control console 15 to rotate, and the welding gun 16 welds the blade on the surface of the feeding table 18. With the rotation of the control console 15, the blade can be welded from all directions to prevent incomplete welding. After welding is completed, the worker removes the blade and sends it to the next process. When the six-jaw chuck 17 is activated, it drives the contact component 11 to move synchronously. The limiting component 12 moves along with the contact component 11. When the contact component 11 contacts the blade, the contact component 11 moves again due to the continuous force applied by the six-jaw chuck 17.

[0061] Protective mechanism 2 includes:

[0062] Amplification component 21 is rotatably disposed on the side wall of contact component 11;

[0063] The scraping component 22 is rotatably mounted on the outer wall of the feeding platform 18;

[0064] When the contact component 11 comes into contact with the blade, it exerts a thrust on the amplification component 21 as the contact component 11 moves, causing the amplification component 21 to rotate under the force. When the contact component 11 moves, it drives the scraping component 22 to move and forces the scraping component 22 to rotate.

[0065] Storage unit 3 includes:

[0066] Collision component 31 is slidably disposed on the inner wall of the feeding platform 18;

[0067] When the scraping component 22 rotates, it comes into contact with the collision component 31. As the scraping component 22 continues to rotate, it generates a thrust on the collision component 31, causing the collision component 31 to move under the force.

[0068] Example 2, please refer to Figures 4-9 The present invention is a plasma arc precision welding device for connecting joints of aircraft turbine blades. Based on the first embodiment, the contact component 11 includes a spring 113 fixedly connected to the side wall of the force block 112, and a contact block 114 rotatably connected to the end of the force block 112 away from the moving block 111.

[0069] When the six-jaw chuck 17 is activated, the six-jaw chuck 17 drives the moving block 111 to move. The force block 112 and the spring 113 move synchronously with the moving block 111. When the force block 112 moves a certain distance, the contact block 114 first contacts the blade. As the force block 112 continues to move, the contact block 114 rotates and forms the maximum fit with the blade.

[0070] The limiting component 12 includes a force plate 121 rotatably connected to the side wall of the contact block 114, a spring piece 122 fixedly connected to the inner wall of the force block 112, a sliding block 123 rotatably connected to the bottom of the outer wall of the force plate 121, and a shaped frame 124 slidably connected to the top of the inner wall of the feeding platform 18.

[0071] When the contact block 114 rotates, it exerts a pushing force on the force plate 121, causing the force plate 121 to move under the force. During this movement, it exerts a pushing force on the spring piece 122, forcing the spring piece 122 to compress and accumulate potential energy. The sliding block 123 moves synchronously with the force plate 121. When the contact block 114 rotates at a certain angle, as the moving block 111 continues to move, the force block 112 experiences resistance from the blade. At this time, the force block 112 moves relative to the moving block 111 and exerts a pushing force on the spring 113, causing the spring 113 to compress and accumulate potential energy. Figure 4 As shown, when the moving block 111 moves, it drives the protrusion at F to move synchronously. When the moving block 111 is about to stop moving, the protrusion at F contacts the inclined surface of the irregular frame 124. As the moving block 111 continues to move, the protrusion at F exerts a pushing force on the irregular frame 124, forcing the irregular frame 124 to move and exerting a pulling force on the spring sheet on its own side wall. When the irregular frame 124 moves, several protrusions on the side wall of the irregular frame 124 contact the groove on the side wall of the sliding block 123 and enter the interior of the sliding block 123 to restrict the sliding block 123, so that the contact block 114 cannot be displaced in contact with the blade.

[0072] The amplification component 21 includes a flexible block 212 that is slidably connected to the inner wall of the contact block 114;

[0073] When the contact block 114 rotates in contact with the blade, it exerts a thrust on the compression rod 211, causing the compression rod 211 to exert a thrust on the flexible block 212. The flexible block 212 is tilted inside the contact block 114. Under the thrust of the compression rod 211, the flexible block 212 gradually moves out of the contact block 114 and comes into contact with the blade. As the flexible block 212 moves, it exerts a pulling force on the spring sheet on its side wall. As the contact block 114 continues to rotate, after the flexible block 212 is in full contact with the blade, the compression rod 211 is gradually compressed by the thrust of the flexible block 212 and rotates during the compression process.

[0074] The scraping assembly 22 includes a shaped scraper 221 rotatably connected to the side wall of the feeding platform 18, a torsion spring 222 sleeved on the inner wall of the shaped scraper 221, and an inclined block 223 slidably connected to the inner wall of the force-bearing block 112.

[0075] Among them, such as Figure 7 As shown, the force-bearing block 112 is in a state of imminent reset. At this time, the force-bearing block 112 drives the inclined block 223 to gradually come into contact with the irregular scraper 221. Under the resistance of the irregular scraper 221, the inclined block 223 moves inside the force-bearing block 112 and applies a pushing force to the spring plate at its top, causing the spring plate to be compressed. When the inclined block 223 moves to the right side of the torsion spring 222, the inclined block 223 pops out under the elastic force of the spring plate, applying a pushing force to the irregular scraper 221, causing the irregular scraper to... The rod 221 rotates under force and applies pressure to the torsion spring 222, causing the torsion spring 222 to be compressed and accumulate potential energy. At this time, the contact block 114 has moved to the right side of the irregular scraper 221. The irregular scraper 221 continuously contacts the surface of the contact block 114 during rotation, causing the contact block 114 to rotate under force. When the force block 112 moves to the left, the tilting block 223 moves upward due to the resistance of the irregular scraper 221, causing the irregular scraper 221 to begin to reset under the elastic force of the torsion spring 222.

[0076] The collision component 31 includes a spring piece 312 fixedly connected to the side wall of the collection block 311;

[0077] When the irregular scraper 221 rotates under force, it comes into contact with several protruding inclined blocks on the left side of the collection block 311. The inclined surface of the protruding blocks on the left side of the collection block 311 generates a pushing force on the collection block 311, causing the collection block 311 to move under force. When the collection block 311 moves, it applies a pushing force to the spring piece 312, forcing the spring piece 312 to be compressed and accumulate potential energy. When the irregular scraper 221 resets, it comes into contact with the inclined surface on the left side of the collection block 311 again. At this time, the debris attached to the surface of the irregular scraper 221 is intercepted by the collection block 311 and gradually enters the interior of the collection block 311 through the inclined surface.

[0078] One specific application of this embodiment is as follows: The worker places the blade to be welded on the surface of the feeding table 18 and starts the six-jaw chuck 17 to precisely clamp the blade. After confirming that the blade is stably clamped, the worker starts the motor 14 and the welding gun 16. The motor 14 drives the control console 15 to rotate. At this time, the welding gun 16 welds the blade on the surface of the feeding table 18. With the rotation of the control console 15, the blade can be welded from all directions to prevent missed welds. After the welding is completed, the worker takes it out and sends it to the next process.

[0079] For irregularly shaped blades lacking a flat clamping reference surface, exhibiting uneven structural rigidity distribution, and often made of thin-walled high-temperature alloy materials, most traditional rigid clamps struggle to find stable clamping points. Even slight uneven force can lead to loosening and displacement, directly resulting in poor weld formation, incomplete fusion, and incomplete penetration, making the joint a structural weak point and increasing the risk of failure under extreme engine loads. When the six-jaw chuck 17 is activated, it moves the moving block 111. The force-bearing block 112 and spring 113 move synchronously with the moving block 111. When the force-bearing block 112 has moved a certain distance, the contact block 114 first contacts the blade, and then the force-bearing block 112... The continuous movement of block 2 causes contact block 114 to rotate, forming maximum contact with the blade. When contact block 114 rotates, it exerts a pushing force on force plate 121, causing force plate 121 to move under force. During this movement, it exerts a pushing force on spring piece 122, forcing spring piece 122 to compress and accumulate potential energy. Sliding block 123 moves synchronously with force plate 121. When contact block 114 rotates a certain angle, as moving block 111 continues to move, force block 112 experiences resistance from the blade. At this time, force block 112 moves relative to moving block 111 and exerts a pushing force on spring 113, causing spring 113 to compress and accumulate potential energy. Figure 4 As shown, when the moving block 111 moves, it drives the protrusion at F to move synchronously. When the moving block 111 is about to stop moving, the protrusion at F contacts the inclined surface of the irregular frame 124. As the moving block 111 continues to move, the protrusion at F exerts a pushing force on the irregular frame 124, forcing the irregular frame 124 to move and applying a pulling force to the spring sheet on its own side wall. When the irregular frame 124 moves, several protrusions on the side wall of the irregular frame 124 contact the groove on the side wall of the sliding block 123 and enter the interior of the sliding block 123 to restrict the sliding block 123, so that the contact block 114 cannot be displaced in contact with the blade. Through the above components, a simple and precise clamping structure can provide targeted support at each stress point of the blade, effectively offset welding thermal stress, avoid blade body deformation, and ensure that the surface accuracy meets the standards after welding.

[0080] Utilizing the rotational characteristic of the contact block 114, when the contact block 114 rotates and contacts the blade, it generates a thrust on the compression rod 211. This causes the compression rod 211 to exert a thrust on the flexible block 212. The flexible block 212 is tilted inside the contact block 114. Under the thrust of the compression rod 211, the flexible block 212 gradually moves out of the contact block 114 and contacts the blade. As the flexible block 212 moves, it exerts a pulling force on the spring sheet on its sidewall. With the continuous rotation of the contact block 114, the flexible block 212 eventually makes full contact with the blade. Subsequently, the compression rod 211 is gradually compressed by the thrust of the flexible block 212 and rotates during the compression process. Since the thin-walled blade has extremely low rigidity, excessive clamping torque will directly cause irreversible plastic deformation of the blade body, tenon and other parts, destroying the blade profile accuracy. After subsequent welding, the profile deviation will exceed the design tolerance requirements of the aero-engine. By using the above components, the contact area between the contact block 114 and the blade is increased, which can significantly reduce the pressure per unit area, prevent local stress concentration, and reduce the risk of indentation and local plastic deformation of the blade under excessive clamping torque from the root.

[0081] Utilizing the characteristics of the movement of the aforementioned force-bearing block 112, such as Figure 7 As shown, the force-bearing block 112 is in a state of imminent reset. At this time, the force-bearing block 112 drives the inclined block 223 to gradually come into contact with the irregular scraper 221. Under the resistance of the irregular scraper 221, the inclined block 223 moves inside the force-bearing block 112 and applies a pushing force to the spring at its top, causing the spring to be compressed. When the inclined block 223 moves to the right side of the torsion spring 222, the inclined block 223 pops out under the elastic force of the spring, applying a pushing force to the irregular scraper 221, causing the irregular scraper 221 to rotate under force and apply pressure to the torsion spring 222, causing the torsion spring 222 to be compressed and accumulate potential energy. At this time, the contact block 114 has moved to the right side of the irregular scraper 221. The irregular scraper 221 continuously contacts the surface of the contact block 114 during rotation, causing the contact block 114 to be subjected to force. When the force-bearing block 112 moves to the left, the tilting block 223 moves upward due to the resistance of the irregular scraper 221, causing the irregular scraper 221 to begin to reset under the elastic force of the torsion spring 222. During plasma arc welding, flux residue, incompletely volatilized flux components, and metal debris and metal salts formed after the molten metal spatter cools down are generated under high temperature. These residues will adhere to the surface of the contact block 114, causing the clamping contact surface to be raised, resulting in the blade clamping position shifting. The original high-precision positioning reference is destroyed, directly reducing the form and position tolerance accuracy of the subsequent blades. Through the above components, hard residues such as welding slag and metal spatter can be scraped off, preventing the residue from raising the contact surface and causing the blade clamping to shift, maintaining the original positioning reference accuracy of the fixture for a long time, and ensuring that the form and position tolerance of the turbine blade welding meets the requirements.

[0082] Utilizing the rotational characteristic of the aforementioned irregularly shaped scraper 221, when the scraper 221 rotates under force, it contacts several protruding inclined blocks on the left side of the collecting block 311. The inclined surfaces of these protruding blocks on the left side of the collecting block 311 exert a pushing force on it, causing the collecting block 311 to move. This movement of the collecting block 311 applies a pushing force to the spring sheet 312, forcing it to compress and accumulate potential energy. When the scraper 221 returns to its original position, it contacts the inclined surface on the left side of the collecting block 311 again. At this point, the debris adhering to the surface of the scraper 221 is gradually removed by the collection block 311 through the inclined surface. When the scraper bar 221 enters the collection block 311, some metal debris will still adhere to its surface after contacting the contact block 114. The accumulation of debris on the surface of the scraper bar 221 will prevent it from completely removing the debris from the surface of the contact block 114. As a result, debris will still be attached to the surface of the contact block 114, making it impossible to accurately clamp the blade during subsequent clamping. The above-mentioned components can remove the debris attached to the surface of the scraper bar 221 in segments and collect the debris in a concentrated manner to ensure the cleanliness of the surface of the scraper bar 221.

[0083] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the specification and its full scope and equivalents.

Claims

1. A plasma arc precision welding device for aircraft turbine blade connecting joints, comprising a fuselage (13), a motor (14) fixedly disposed on the inner wall of the fuselage (13), a control console (15) rotatably disposed on the inner wall of the fuselage (13), a welding torch (16) slidably disposed on the top of the inner wall of the fuselage (13), a six-jaw chuck (17) fixedly disposed on the top of the outer wall of the control console (15), and a feeding table (18) fixedly disposed on the top of the outer wall of the six-jaw chuck (17), characterized in that, Also includes: Braking mechanism (1), which is slidably disposed on the inner wall of the feeding platform (18); The braking mechanism (1) includes a movable block (111) that is slidably connected to the inner wall of the feeding platform (18), and a force-bearing block (112) is slidably connected to the inner wall of the movable block (111). The protective mechanism (2) is rotatably disposed on the side wall of the braking mechanism (1); The protective mechanism (2) includes a compression rod (211) that is rotatably connected to the side wall of the force-bearing block (112). Storage mechanism (3), which is slidably disposed on the inner wall of the feeding platform (18); The storage mechanism (3) includes a collection block (311) that is slidably connected to the inner wall of the feeding platform (18).

2. The plasma arc precision welding device for connecting joints of aero-turbine blades according to claim 1, characterized in that: The braking mechanism (1) includes: Contact component (11), which is slidably disposed on the inner wall of the feeding table (18); A limiting component (12) is rotatably disposed on the outer wall of the contact component (11); When the six-jaw chuck (17) is activated, the six-jaw chuck (17) drives the contact component (11) to move synchronously, and the limit component (12) moves along with the contact component (11).

3. The apparatus of claim 2, wherein: The protective mechanism (2) includes: Amplification component (21), which is rotatably disposed on the side wall of contact component (11); The scraping assembly (22) is rotatably disposed on the outer wall of the feeding platform (18); When the contact component (11) comes into contact with the blade, it generates a thrust on the amplification component (21) as the contact component (11) moves.

4. The apparatus of claim 3, wherein: The storage mechanism (3) includes: Collision assembly (31), which is slidably disposed on the inner wall of the feeding table (18); When the scraping component (22) rotates, it comes into contact with the collision component (31).

5. The plasma arc precision welding device for connecting joints of aero-turbine blades according to claim 4, characterized in that: The contact assembly (11) includes a spring (113) fixedly connected to the side wall of the force block (112), and a contact block (114) is rotatably connected to one end of the force block (112) away from the moving block (111). The bottom of the outer wall of the movable block (111) is fixedly connected to the movable claw of the six-jaw chuck (17), and the end of the spring (113) away from the force block (112) is fixedly connected to the inner wall of the movable block (111).

6. The plasma arc precision welding device for connecting joints of aero-turbine blades according to claim 5, characterized in that: The limiting component (12) includes a force plate (121) rotatably connected to the side wall of the contact block (114), a spring piece (122) fixedly connected to the inner wall of the force block (112), a sliding block (123) rotatably connected to the bottom of the outer wall of the force plate (121), and a shaped frame (124) slidably connected to the top of the inner wall of the feeding platform (18). The sliding block (123) is slidably connected to the inner wall of the force-bearing block (112), and the spring piece (122) is initially in contact with the bottom of the outer wall of the force-bearing plate (121).

7. The apparatus of claim 5, wherein: the apparatus further comprises a plasma arc torch; and the plasma arc torch is configured to provide a plasma arc to melt the filler material and the turbine blade to form the joint. The amplification component (21) includes a flexible block (212) that is slidably connected to the inner wall of the contact block (114). The end of the compression rod (211) away from the force-bearing block (112) is rotatably connected to the flexible block (212).

8. The plasma arc precision welding device for connecting joints of aero-turbine blades according to claim 5, characterized in that: The scraping assembly (22) includes a shaped scraper (221) rotatably connected to the side wall of the feeding platform (18), a torsion spring (222) sleeved on the inner wall of the shaped scraper (221), and an inclined block (223) slidably connected to the inner wall of the force block (112). The outer ends of the torsion spring (222) are fixedly connected to the side wall of the feeding platform (18).

9. The plasma arc precision welding device for connecting joints of aero-turbine blades according to claim 5, characterized in that: The collision assembly (31) includes a spring piece (312) fixedly connected to the side wall of the collection block (311). The end of the spring piece (312) away from the collecting block (311) is fixedly connected to the inner wall of the feeding platform (18).

Images