Laser welding device for large gear machining

Abstract

The invention discloses a laser welding device for large gear machining, and particularly relates to the technical field of laser welding, the laser welding device comprises a supporting table, a welding control panel is fixedly connected to the upper end of the supporting table, a welding assembly is fixedly connected to the upper end of the welding control panel, and a rotating assembly is fixedly connected to the upper end of the welding assembly; the upper end of the supporting table is fixedly connected with an adjusting assembly, and the right side of the adjusting assembly is slidably connected with a second clamping assembly. According to the laser welding device for large gear machining, through cooperation of the adjusting assembly and the rotating assembly, the welding position of a gear can be adjusted, it is ensured that the relative position between the laser welding head and a workpiece is stable, the welding concentricity and stability are improved, meanwhile, a cold water pipe is arranged at the bottom of the laser welding head, and the welding quality is improved. After welding, the welding area can be cooled, it is ensured that the geometric shapes of a welding joint and the surrounding area are stable, thermal deformation is avoided, the dimensional accuracy and shape of a workpiece are kept, and it is ensured that the welding effect meets the requirement.

Description

Technical Field

[0001] The invention relates to the field of laser welding, and in particular to a laser welding device for machining large gears. Background Art

[0002] With the continuous development of modern mechanical equipment, gears, as core components in transmission systems, are widely used in aerospace, energy, metallurgy, mining, shipping, transportation and other fields. Especially in the manufacturing and repair process of large gears, the strength, wear resistance and precision of gears are extremely high. Therefore, the processing and repair technology of large gears has always been an important topic in the manufacturing industry.

[0003] Chinese patent announcement number CN111037171A discloses a gear welding device for manufacturing large gears, including a base, a rotating plate rotatably mounted on the top surface of the base, a center-to-car rotatably mounted placement plate on the top surface of the rotating plate, a clamping block on the inner clamping plate can clamp the inner diameter of the inner part of the welded gear, and a clamping block on the outer limit plate can clamp the outer diameter of the outer part of the welded gear, which can ensure the concentricity of the inner and outer parts and the processing quality of the welding. When the gear is welded, both sides of the gear are welded, which can ensure the rigidity of the gear, and the gear can be automatically controlled to be flipped, which is convenient for the gear to move; however, the following defects still exist in the implementation process:

[0004] During the implementation of the above patent document, although the gear welding equipment can ensure the concentricity of the gear through the inner and outer clamping plates, and realize automatic flipping and two-sided welding, in actual application, there is still a problem that the concentricity of the gear shaft cannot be effectively guaranteed. Since the rotation method of the rotating plate and the placing plate mainly depends on the center-to-car installation, if the rotating plate is not accurate enough or the clamping force is unevenly distributed, it may cause a slight deviation between the gear shaft and the clamping device, thereby affecting the concentricity of the gear shaft, thereby affecting the welding quality and the final rigidity of the gear. Summary of the invention

[0005] The main purpose of the present invention is to provide a laser welding device for large gear processing, which can effectively solve the problem of being unable to effectively ensure the concentricity of the gear shaft.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A laser welding device for large gear processing includes a support table, a welding control panel is fixedly connected to the upper end of the support table, a welding assembly is fixedly connected to the upper end of the welding control panel, a rotating assembly is fixedly connected to the upper end of the welding assembly, an adjusting assembly is fixedly connected to the upper end of the support table, and a clamping assembly 2 is slidably connected to the right side of the adjusting assembly.

[0008] Preferably, the adjustment component includes motor 1, the output end of motor 1 is fixedly connected to threaded rod 1 through a coupling, the outer surface of threaded rod 1 is wrapped with a transmission belt, the other side of the transmission belt is wrapped with threaded rod 2, the right sides of threaded rod 1 and threaded rod 2 are commonly threadedly connected to a sliding block, the left side of the outer surface of threaded rod 1 and the left side of the outer surface of threaded rod 2 are commonly rotatably connected to fixed block 2, and the right part of threaded rod 1 and the right part of threaded rod 2 are both rotatably connected to a limiting block.

[0009] Preferably, the rotating assembly includes motor 2, the output end of motor 2 is fixedly connected to the transmission shaft through a coupling, a connecting pipe is fixedly connected to the right side of fixed block 2, the left end of the connecting pipe is fixedly connected to the right end of fixed block 2, and a clamping assembly 1 is fixedly connected to the right end of the transmission shaft, and a welding ring is clamped on the outer surface of the clamping assembly 1.

[0010] Preferably, the clamping component 1 includes a fixed plate, the left end of the fixed plate is fixedly connected to the connecting pipe, the front end of the fixed plate is rotatably connected to gear 2, a plurality of sliding grooves are provided on the surface of gear 2, a plurality of inner surfaces of the sliding grooves are slidably connected to a plurality of snap-in components 1, and the lower portion of the outer surface of gear 2 is meshed with gear 1.

[0011] Preferably, the first snap-fit ​​assembly comprises a matching column, a connecting rod is fixedly connected to the outer surface of the matching column, a snap-fit ​​connecting block is fixedly connected to the other end of the connecting rod, and welding rings are tightly attached to the outer surfaces of several snap-fit ​​connecting blocks.

[0012] Preferably, the welding assembly includes a cold water tank, a cold water pipe is fixedly connected to the left side of the cold water tank, a fixed block 1 is slidably connected to the outer surface of the cold water pipe, an upper end of the fixed block 1 is fixedly connected to a regulating box, and a laser welding head is fixedly connected to the inner surface of the regulating box.

[0013] Preferably, the regulating box comprises an outer shell, an inner cavity of the outer shell is fixedly connected to a hydraulic telescopic rod, an output end of the hydraulic telescopic rod is fixedly connected to a sliding rod, and a front portion of the sliding rod is rotatably connected to a laser welding head.

[0014] Preferably, the clamping component 2 includes a mating ring 1, the inner surface of which is slidably connected to a snap-on component 2, a plurality of limit grooves are provided on the surface of the mating ring 1, a plurality of connecting plates are fixedly connected to the right side of the mating ring 1, and a center plate is fixedly connected to the side where the connecting plates are close to each other.

[0015] Preferably, the second clamping assembly comprises a second matching ring, the inner surface of the second matching ring is slidably connected to a plurality of sliding columns, and the outer surfaces of the plurality of sliding columns are all wound and connected with springs.

[0016] Preferably, the ends of the plurality of springs that are close to each other are fixedly connected with a clamping block, and the sides of the plurality of clamping blocks that are close to each other are commonly meshed with a welding toothed ring.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By cooperating with the adjusting component and the rotating component, the welding position of the large gear can be accurately adjusted to ensure the stability of the relative position between the laser welding head and the workpiece, thereby improving the concentricity and stability of the welding and ensuring the welding quality. At the same time, a cold water pipe is set at the bottom of the laser welding head to cool the welding area after welding to ensure the stability of the geometric shape of the welding joint and the surrounding area, avoid thermal deformation, maintain the dimensional accuracy and shape of the workpiece, and ensure that the welding effect meets the requirements.

[0019] 2. The design of the cold water tank and cold water pipe effectively controls the temperature during laser welding, avoids damage to the equipment and workpieces caused by excessively high temperatures, ensures the stable operation of the welding head and extends the service life of the equipment. In addition, the cooling system can also help control the uniform distribution of heat during welding, reduce thermal deformation of the workpiece, and ensure a more uniform welding effect.

[0020] 3. The clamping component 2 and the card-connecting component cooperate to ensure the precise positioning and fixation of the large gear during the welding process. By setting the coordination of structures such as the spring and the sliding column, the clamping component can automatically adjust the clamping force and effectively fix the workpiece, thus avoiding welding deviation or workpiece damage caused by improper clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is another perspective overall structural schematic diagram of the present invention;

[0023] Figure 3 It is a schematic diagram of the overall structure of the adjustment component of the present invention;

[0024] Figure 4 It is a schematic diagram of the overall structure of the rotating assembly of the present invention;

[0025] Figure 5 It is a schematic diagram of the overall structure of the clamping assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the overall structure of the clamping assembly of the present invention;

[0027] Figure 7 It is a schematic diagram of the overall structure of the welding assembly of the present invention;

[0028] Figure 8It is a schematic diagram of the overall structure of the regulating box of the present invention;

[0029] Fig. 9 It is a schematic diagram of the overall structure of the clamping assembly 2 of the present invention;

[0030] Fig.10 It is a schematic diagram of the overall structure of the second clamping assembly of the present invention.

[0031] In the figure: 1. Support table; 2. Welding control panel; 3. Welding assembly; 31. Cold water tank; 32. Cold water pipe; 33. Fixed block 1; 34. Laser welding head; 35. Adjustment box; 351. Shell; 352. Hydraulic telescopic rod; 353. Sliding rod; 4. Adjustment assembly; 41. Motor 1; 42. Fixed block 2; 43. Threaded rod 1; 44. Sliding block; 45. Transmission belt; 46. Threaded rod 2; 47. Limit block; 5. Rotation assembly; 51. Motor 2; 52. Connecting pipe; 53. Clamping component one; 531, fixed plate; 532, gear one; 533, gear two; 534, sliding groove; 535, snap-on component one; 5351, matching column; 5352, connecting rod; 5353, snap-on connecting block; 54, welding ring; 6, clamping component two; 61, matching ring one; 62, snap-on component two; 621, matching ring two; 622, sliding column; 623, spring; 624, snap-on block; 625, welding gear ring; 63, limiting groove; 64, connecting plate; 65, center plate. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] For example, see Figure 1 and Figure 2 As shown, a laser welding device for large gear processing includes a support table 1, a welding control panel 2 is fixedly connected to the upper end of the support table 1, a welding assembly 3 is fixedly connected to the upper end of the welding control panel 2, a rotating assembly 5 is fixedly connected to the upper end of the welding assembly 3, an adjusting assembly 4 is fixedly connected to the upper end of the support table 1, and a clamping assembly 6 is slidably connected to the right side of the adjusting assembly 4.

[0034] During the implementation of this scheme, the two parts to be welded must first be fixed on the upper ends of the clamping component 2 6 and the rotating component 5, and then the specific parameters of the welding control panel 2 are adjusted to put the welding component 3 in a working state. Further, when the operator installs the two parts to be combined on the rotating component 5 and the clamping component 2 6, the two adjustment components 4 are further controlled to approach each other. After the approach is completed, the welding component 3 starts to start, and then cooperates with the rotating component 5 to perform laser welding on the two parts to be welded. At the same time, through the cooperation of the components inside the welding component 3, the connection between the two welding components 3 can be cooled while welding, thereby avoiding the high temperature generated by laser welding during welding, which will cause the metal to be rapidly heated and melted locally, resulting in overheating deformation or grain coarsening of the parent material.

[0035] It should be further explained that: the welding control panel 2 mentioned above is a very mature technical means in the prior art. In this solution, only its controllable function is used. Its working principle is: by setting and adjusting key parameters in the welding process such as laser power, welding speed, pulse frequency, etc., and real-time monitoring of temperature, current, position and other data, the stability and quality of the welding process are ensured. The panel can automatically adjust parameters according to real-time feedback to optimize the welding effect. At the same time, it prompts abnormalities through the alarm system to help operators deal with problems in time. It provides an intuitive user interface, which is convenient for operators to control and monitor the entire welding process and ensure efficient and accurate completion of welding tasks. The circuit connection of this solution will not be elaborated in detail here;

[0036] For further information, see Figure 3 As shown, the adjustment component 4 includes a motor 41, the output end of the motor 41 is fixedly connected to a threaded rod 43 through a coupling, the outer surface of the threaded rod 43 is wrapped with a transmission belt 45, the other side of the transmission belt 45 is wrapped with a threaded rod 2 46, the threaded rod 1 43 and the right side of the threaded rod 2 46 are commonly threadedly connected to a sliding block 44, the left side of the outer surface of the threaded rod 1 43 and the left side of the outer surface of the threaded rod 2 46 are rotatably connected to a fixed block 2 42, and the right part of the threaded rod 1 43 and the right part of the threaded rod 2 46 are both rotatably connected to a limiting block 47.

[0037] When the operator wants to make two welding parts close to each other for concentricity during welding, he only needs to start the motor 1 41 through the welding control panel 2, and then the motor 1 41 will drive the threaded rod 1 43 to rotate when it is started. Furthermore, the threaded rod 1 43 will drive the threaded rod 2 46 to rotate through the transmission belt 45 during the rotation process. Because the front and rear sides of the sliding block 44 are threadedly connected to the threaded rod 1 43, the sliding block 44 will cooperate with the clamping component 2 6 during the rotation of the threaded rod 1 43 and the threaded rod 2 46, so that one of the devices to be welded is close to the rotating component 5, so as to facilitate welding;

[0038] It should be further explained that: the motor 41 in this scheme is a conventional setting in the prior art, and in this scheme only its transmission function is utilized. Its working principle is that when the motor 41 is controlled by the welding control panel 2, the panel sends an electrical signal to the motor 41 according to the set welding parameters to control the start, stop or speed regulation of the motor 41, and the current will pass through the coil of the motor 41, generating torque under the action of the magnetic field, driving the motor 41 to rotate, thereby driving the movement or work of the welding equipment;

[0039] For further information, see Figure 4 , Figure 5 and Figure 6 As shown, the rotating assembly 5 includes a motor 2 51, the output end of the motor 2 51 is fixedly connected to the transmission shaft through a coupling, a connecting pipe 52 is fixedly connected to the right side of the fixed block 2 42, the left end of the connecting pipe 52 is fixedly connected to the right end of the fixed block 2 42, and a clamping assembly 1 53 is fixedly connected to the right end of the transmission shaft, and a welding ring 54 is clamped on the outer surface of the clamping assembly 1 53, and the clamping assembly 1 53 includes a fixed disk 531, the left end of the fixed disk 531 is fixedly connected to the connecting tube 52, and the front end of the fixed disk 531 is rotatably connected There is a gear 2 533, a plurality of sliding grooves 534 are opened on the surface of the gear 2 533, a plurality of snap-in components 535 are slidably connected to the inner surfaces of the plurality of sliding grooves 534, a gear 1 532 is meshed with the lower part of the outer surface of the gear 2 533, the snap-in component 1 535 includes a matching column 5351, a connecting rod 5352 is fixedly connected to the outer surface of the matching column 5351, a snap-in connecting block 5353 is fixedly connected to the other end of the connecting rod 5352, and a plurality of snap-in connecting blocks 5353 are tightly attached to the outer surfaces of the plurality of snap-in connecting blocks 5353.

[0040] In the present implementation process, when the operator wants to weld two parts to be welded, he only needs to place the welding ring 54 on the outer surface of the clamping component 1 535, and further start the power source fixedly connected to the back of the fixed plate 531 at the rear of the starting gear 1 532 through the welding component 3. When the power source on the back of the fixed plate 531 is started, the gear 1 532 will be driven to rotate. In the process of the rotation of the gear 1 532, the teeth on the outer surface will mesh with the teeth on the outer surface of the gear 2 533, thereby driving the gear 2 533 to rotate. Subsequently, in the process of the rotation of the gear 2 533, the sliding groove 534 provided on the surface cooperates with the plurality of matching columns 5351, so that the plurality of connecting rods 5352 can drive the clamping connecting blocks 5353 fixedly connected at one end away from each other to move away from each other, thereby providing internal support to the welding ring 54, and thus achieving the fixation of the welding ring 54.

[0041] Furthermore, by designing the mutual cooperation between gear one 532 and gear two 533, when gear one 532 rotates, the teeth on its outer surface mesh with the teeth of gear two 533, thereby driving gear two 533 to rotate. During the rotation process of gear two 533, a plurality of sliding grooves 534 are provided on its surface. The sliding grooves 534 interact with the matching columns 5351, so that a plurality of snap-in connection blocks 5353 can move relative to each other under the guidance of the sliding grooves 534. When gear two 533 rotates, the snap-in connection blocks 5353 can approach or move away from each other through the design of the sliding grooves 534, thereby achieving the clamping or loosening of the welding ring 54.

[0042] Furthermore, by providing a plurality of clamping components 535, they can be extended at the same time to clamp or release the welding ring 54, so that the device can automatically adapt to welding rings 54 of different sizes. Furthermore, by adjusting the rotation angle of the gear 532, the movement range of the clamping connection block 5353 can be controlled, so that the welding ring 54 can be stably clamped or released during the welding process. This mechanism can ensure that the welding ring 54 is always in the center position during the welding process, thereby improving the welding accuracy and the stability of the workpiece.

[0043] In addition, by further optimizing the design of the sliding groove 534 and the matching column 5351, the friction coefficient can be reduced, the resistance in movement can be reduced, and the working efficiency and life of the entire system can be improved. The intelligent design of the system not only makes the clamping of the welding ring 54 more precise, but also can adapt to workpieces of different sizes and shapes. It is widely used in welding operations in large-scale production, thereby improving the level of production automation.

[0044] For further information, please refer to Figure 7 and Figure 8As shown, the welding assembly 3 includes a cold water tank 31, a cold water pipe 32 is fixedly connected to the left side of the cold water tank 31, a fixed block 33 is slidably connected to the outer surface of the cold water pipe 32, an adjusting box 35 is fixedly connected to the upper end of the fixed block 33, a laser welding head 34 is fixedly connected to the inner surface of the adjusting box 35, the adjusting box 35 includes an outer shell 351, a hydraulic telescopic rod 352 is fixedly connected to the inner cavity of the outer shell 351, a sliding rod 353 is fixedly connected to the output end of the hydraulic telescopic rod 352, and the front part of the sliding rod 353 is rotatably connected to the laser welding head 34.

[0045] In this implementation process, when the laser welding head 34 is welding the welding ring 54 and the welding parts inside the clamping assembly 26, the cold water tank 31 cooperates with the cold water pipe 32 to cool the position of the laser welding head 34 after welding, thereby avoiding overheating of the material and reducing the negative impact on the performance of the welding area and surrounding areas. Furthermore, by setting a hydraulic telescopic rod 352 fixedly connected to the inner cavity of the outer shell 351, the laser welding head 34 can be adjusted according to the actual welding position, thereby reducing errors or mistakes caused by improper human operation and ensuring that the welding process is more stable and consistent.

[0046] It should be further explained that a water pump is provided in the inner cavity of the cold water tank 31. After the laser welding head 34 has welded, the water pump will extract the water stored in the inner cavity of the cold water tank 31 to properly cool the two welded parts, thereby reducing the deformation of the large gear due to thermal expansion and contraction, and ensuring that the geometric shape of the workpiece remains stable;

[0047] The water pump mentioned above is a conventional design in the prior art, and its working principle is: the working principle is to drive the mechanical components inside the pump through external power, suck the liquid from the low-pressure area, and accelerate or squeeze the liquid through energy conversion to form high pressure, and finally transport the liquid to where it is needed. Different types of water pumps achieve this process in different ways, but their core principle is to convert mechanical energy into fluid energy to achieve liquid transportation. In this solution, only intermittent and appropriate cooling of the weld is required.

[0048] For further information, please refer to Fig. 9 and Fig.10As shown, the clamping component 2 6 includes a matching ring 1 61, and the inner surface of the matching ring 1 61 is slidably connected to the clamping component 2 62, and a plurality of limit grooves 63 are provided on the surface of the matching ring 1 61. A plurality of connecting plates 64 are fixedly connected to the right side of the matching ring 1 61, and a center plate 65 is fixedly connected to the side where the plurality of connecting plates 64 are close to each other. The clamping component 2 62 includes a matching ring 2 621, and the inner surface of the matching ring 2 621 is slidably connected to the plurality of sliding columns 622, and the outer surfaces of the plurality of sliding columns 622 are all wound and connected with springs 623, and the ends of the plurality of springs 623 close to each other are all fixedly connected with clamping blocks 624, and the sides of the plurality of clamping blocks 624 close to each other are jointly meshed with a welding tooth ring 625.

[0049] Furthermore, when the operator is clamping the welding toothed ring 625, he only needs to rotate the matching ring 61 so that the limiting grooves 63 can squeeze the adjacent sliding columns 622, so that the welding toothed ring 625 that is fixedly connected at one end of the sliding columns 622 close to each other is fixed. When the operator wants to release the fixation of the welding toothed ring 625, he only needs to rotate the matching ring 61 in the opposite direction, so that the matching ring 61 will cooperate with the limiting grooves 63, thereby making the sliding columns 622 pop out, so that the four clamping blocks 624 release the restriction on the welding toothed ring 625.

[0050] Working principle: First, the welding ring 54 and the welding tooth ring 625 to be welded need to be fixed on the upper ends of the clamping block 624 and the plurality of clamping connection blocks 5353, and then the specific parameters of the welding control panel 2 are adjusted to put the laser welding head 34 in a working state, and then the two adjustment components 4 are controlled to approach each other. After the approach is completed, the laser welding head 34 starts to start, and then cooperates with the rotating component 5 to perform laser welding on the two parts to be welded. At the same time, the cold water tank 31 and the cold water pipe 32 inside the welding component 3 can cooperate to weld the connection between the two welding components 3 while welding. Cooling is carried out to prevent the high temperature generated by laser welding during welding from causing rapid local heating and melting of the metal. After welding is completed, the operator can reversely rotate the matching ring 1 61. During the reverse rotation of the matching ring 1 61, due to the existence of the limit groove 63, the clamping component 2 62 will be pushed up, thereby disengaging from the clamping of the welding gear ring 625. At this time, the operator reversely rotates the power source fixedly connected to the gear 1 532 through the welding control panel 2, and then the gear 1 532 will rotate in the opposite direction, thereby loosening the clamping of the welding ring 54 through the cooperation of the sliding groove 534 and the matching column 5351.

[0051] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A laser welding device for large gear processing, comprising a support table (1), characterized in that: The upper end of the support platform (1) is fixedly connected to a welding control panel (2), the upper end of the welding control panel (2) is fixedly connected to a welding assembly (3), the upper end of the welding assembly (3) is fixedly connected to a rotating assembly (5), the upper end of the support platform (1) is fixedly connected to an adjusting assembly (4), and the right side of the adjusting assembly (4) is slidably connected to a clamping assembly 2 (6).

2. A laser welding device for large gear processing according to claim 1, characterized in that: The adjustment assembly (4) comprises a motor 1 (41), the output end of the motor 1 (41) is fixedly connected to a threaded rod 1 (43) through a coupling, the outer surface of the threaded rod 1 (43) is wound with a transmission belt (45), the other side of the transmission belt (45) is wound with a threaded rod 2 (46), the right sides of the threaded rod 1 (43) and the threaded rod 2 (46) are threadedly connected to a sliding block (44), the left side of the outer surface of the threaded rod 1 (43) and the left side of the outer surface of the threaded rod 2 (46) are rotatably connected to a fixed block 2 (42), and the right part of the threaded rod 1 (43) and the right part of the threaded rod 2 (46) are both rotatably connected to a limiting block (47).

3. A laser welding device for large gear processing according to claim 2, characterized in that: The rotating assembly (5) comprises a second motor (51), the output end of the second motor (51) is fixedly connected to the transmission shaft via a coupling, a connecting pipe (52) is fixedly connected to the right side of the second fixed block (42), the left end of the connecting pipe (52) is fixedly connected to the right end of the second fixed block (42), a clamping assembly (53) is fixedly connected to the right end of the transmission shaft, and a welding ring (54) is clamped on the outer surface of the clamping assembly (53).

4. A laser welding device for large gear processing according to claim 3, characterized in that: The clamping assembly one (53) comprises a fixed plate (531), the left end of which is fixedly connected to the connecting pipe (52), the front end of which is rotatably connected to a gear two (533), a surface of which is provided with a plurality of sliding grooves (534), the inner surfaces of which are slidably connected to a plurality of snap-on assemblies one (535), and the lower portion of the outer surface of the gear two (533) is meshed with a gear one (532).

5. A laser welding device for large gear processing according to claim 4, characterized in that: The snap-fit ​​assembly (535) comprises a matching column (5351), the outer surface of which is fixedly connected to a connecting rod (5352), the other end of which is fixedly connected to a snap-fit ​​connecting block (5353), and the outer surfaces of several of the snap-fit ​​connecting blocks (5353) are tightly attached to welding rings (54).

6. The laser welding device for large gear processing according to claim 1, characterized in that: The welding assembly (3) comprises a cold water tank (31), a cold water pipe (32) is fixedly connected to the left side of the cold water tank (31), a fixed block (33) is slidably connected to the outer surface of the cold water pipe (32), an adjustment box (35) is fixedly connected to the upper end of the fixed block (33), and a laser welding head (34) is fixedly connected to the inner surface of the adjustment box (35).

7. A laser welding device for large gear processing according to claim 6, characterized in that: The regulating box (35) comprises an outer shell (351), the inner cavity of the outer shell (351) is fixedly connected to a hydraulic telescopic rod (352), the output end of the hydraulic telescopic rod (352) is fixedly connected to a sliding rod (353), and the front part of the sliding rod (353) is rotatably connected to the laser welding head (34).

8. The laser welding device for large gear processing according to claim 1, characterized in that: The clamping component 2 (6) comprises a matching ring 1 (61), the inner surface of which is slidably connected to a clamping component 2 (62), a surface of which is provided with a plurality of limiting grooves (63), a right side of the matching ring 1 (61) is fixedly connected to a plurality of connecting plates (64), and a center plate (65) is fixedly connected to the side where the plurality of connecting plates (64) are close to each other.

9. A laser welding device for large gear processing according to claim 8, characterized in that: The second clamping assembly (62) comprises a second matching ring (621), the inner surface of which is slidably connected to a plurality of sliding posts (622), and the outer surfaces of the plurality of sliding posts (622) are all wound and connected to springs (623).

10. A laser welding device for large gear processing according to claim 9, characterized in that: One end of the plurality of springs (623) close to each other is fixedly connected to a clamping block (624), and one side of the plurality of clamping blocks (624) close to each other is commonly meshed with a welding toothed ring (625).

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