Large wind power bearing ring laser cladding repair equipment and method

Abstract

The invention discloses large-scale wind power bearing ring laser cladding repairing equipment and method, and belongs to the technical field of high-end equipment remanufacturing, the large-scale wind power bearing ring laser cladding repairing equipment comprises a swing mechanism used for installing a bearing ring and a laser cladding head used for machining the bearing ring, and the laser cladding head is controlled through a three-axis linkage device; the slewing mechanism comprises a clamping structure used for clamping the bearing ring and a driving structure used for driving the clamping structure, the clamping structure is connected with the driving structure through a speed reducer, and the clamping structure comprises an adjustable clamping jaw used for clamping the bearing ring and a chuck used for installing the clamping jaw. The repair requirements of large-size, thick-wall and heavy-load rotary parts can be met, and the blank of large rotary mechanism laser cladding repair equipment is filled up. The clamping structure has the functions of flexibly adjusting, positioning and clamping, can be used for large-scale division bearing rings with different sizes and different curvatures after being adjusted, and is suitable for repairing rotary parts with complex shapes.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of high-end equipment remanufacturing technology, and particularly relates to a large wind power bearing ring laser cladding repair device and method. BACKGROUND

[0002] In recent years, due to the rapid development of the wind power industry, the installed capacity of high-value components such as self-aligning roller bearings, cylindrical roller bearings and four-point contact ball bearings continues to increase. In China, the bearing ring is the core component of the wind power equipment to transmit force and bear load, which is prone to failure phenomena such as wear and crack under long-term high-speed rotation, variable load and complex working conditions. Once the bearing ring fails, not only will it cause the wind power equipment to shut down, resulting in huge economic losses, but also the cost of replacing the new ring is high, and a large amount of waste metal will be produced, which is not in line with the development concept of green manufacturing and resource recycling. Therefore, remanufacturing and repairing the failed wind power bearing ring to restore its performance has significant economic value and environmental protection significance.

[0003] As an important branch of additive manufacturing technology, laser cladding technology has the advantages of rapid prototyping, flexible deposition process, high bonding strength of the repaired area and the substrate, and has shown application value in the fields of repairing high-end equipment such as turbine blades, rolling mill roller sleeves and hydraulic supports. In order to achieve the best stress distribution and self-aligning ability, the working surface of the large bearing ring needs to be designed with a certain curvature, which is often a logarithmic curve, a sinusoidal curve or a parabolic curve, and is a complex saddle surface structure.

[0004] It is difficult to repair the large bearing ring using the existing technology, and the molten pool at the position of the three-dimensional curvature mutation of the conventional laser cladding repair equipment is unstable, and the large temperature gradient (≈10 6 K / m) and cooling rate (≈10 6 K / s) easily induce coarse organization orientation disorder. SUMMARY

[0005] In view of the defects that the traditional equipment cannot repair the large bearing ring, and the conventional laser cladding easily induces coarse organization orientation disorder, the purpose of the present application is to provide a large wind power bearing ring laser cladding repair device and method.

[0006] To achieve the foregoing purpose, the technical scheme adopted by the present application is as follows: a large wind power bearing ring laser cladding repair device, comprising a rotating mechanism for mounting the bearing ring and a laser cladding head for processing the bearing ring, the laser cladding head is controlled through a three-axis linkage device; the rotating mechanism comprises a clamping structure for clamping the bearing ring and a driving structure for driving the clamping structure, the clamping structure is connected with the driving structure through a speed reducer, and the clamping structure comprises an adjustable jaw for clamping the bearing ring and a chuck for mounting the jaw.

[0007] As an improvement to the above technical solution, the chuck is provided with several chucks, which are arranged in an arc shape on the chuck along the clamping direction of the bearing ring with the chuck center axis as the center. The ends of the chucks are also provided with baffles for limiting the bearing ring.

[0008] As a further improvement to the above technical solution, the jaw is an integrally formed "L" shaped structure. The inner side of the "L" shaped jaw is provided with a high-precision plane that contacts the end face of the bearing ring along the radial direction, and an arc-shaped clamping surface that cooperates with the side of the bearing ring to clamp along the axial direction.

[0009] As a further improvement to the above technical solution, the chuck is further provided radially with a slot for accommodating the jaws and a bolt hole for accommodating the adjusting bolt. The slot and the bolt hole are connected. The outer side of the jaws that contacts the adjusting bolt is also provided with an arc-shaped recess that matches the arc-shaped surface of the bolt. The arc-shaped recess is also provided with several adjusting teeth that match the threads on the adjusting bolt.

[0010] As a further improvement to the above technical solution, a limiting protrusion is also provided in the slot, and a limiting groove is provided in the radial direction to slide with the limiting protrusion. The claw can be adjusted in the slot through the sliding cooperation between the limiting protrusion and the limiting groove.

[0011] As a further improvement to the above technical solution, a limiting section is also provided in the middle of the adjusting bolt, and a limiting pin is also provided at the position of the bolt hole corresponding to the limiting section. The limiting pin is movably set in the limiting section of the adjusting bolt.

[0012] As a further improvement to the above technical solution, the laser cladding head extends to the processing position through an extension structure. One end of the extension structure is fixed on the three-axis linkage mechanism, and the other end is equipped with the laser cladding head through a mounting groove.

[0013] As a further improvement to the above technical solution, the three-axis linkage mechanism includes an X-axis drive structure, a Y-axis drive structure and a Z-axis drive structure. The direction of the X-axis drive structure is the same as the direction of the main shaft on the reducer. The Y-axis drive structure is mounted on the X-axis drive structure in a direction perpendicular to the main shaft on the reducer via an extension frame. The Z-axis drive structure is mounted on the Y-axis drive structure in a direction perpendicular to both the X-axis drive structure and the Y-axis drive structure.

[0014] As a further improvement to the above technical solution, the X-axis drive mechanism, Y-axis drive mechanism and Z-axis drive mechanism all include a lead screw driven by a motor and a slide rail and slider that cooperate with the lead screw.

[0015] According to the aforementioned laser cladding repair equipment for large wind turbine bearing rings, a method for laser cladding repair of large wind turbine bearing rings is also provided, including the following steps: S1: First, use tools to adjust the jaws on the chuck so that the bearing ring can be placed into the clamping area of ​​the jaws; S2: Readjust the chucks to clamp the bearing rings; S3: Activate the three-axis linkage mechanism to adjust the laser cladding head to the processing position; S5: Start the laser cladding head to process the bearing rings.

[0016] The aforementioned quick-detachable integrated chassis offers the following advantages: (1) The laser cladding repair equipment for large wind turbine bearing rings of the present invention can be adapted to large wind turbine bearing rings and can handle the repair needs of large-size, thick-walled and heavy-load rotating parts, filling the gap in laser cladding repair equipment for large rotating mechanisms.

[0017] (2) The clamping structure of the laser cladding repair equipment for large wind turbine bearing rings of the present invention has flexible adjustment positioning and clamping functions. After adjustment, it can be used for large point bearing rings of different sizes and curvatures, and is suitable for repairing complex-shaped rotary parts.

[0018] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is an isometric schematic diagram of a large-scale wind turbine bearing ring laser cladding repair device according to the present invention.

[0020] Figure 2 This is a schematic diagram of the reducer in this invention.

[0021] Figure 3 This is a schematic diagram of the three-axis linkage device in this invention.

[0022] Figure 4 This is a schematic diagram of the rotary mechanism in this invention.

[0023] Figure 5 This is a schematic diagram of the clamping structure in this invention.

[0024] Figure 6 This is a cross-sectional schematic diagram of the clamping structure in this invention.

[0025] Figure 7This is a schematic diagram of the structure of the chuck and adjusting bolt in this invention.

[0026] Figure 8 This is a schematic diagram of the adjusting bolt in this invention.

[0027] Figure 9 This is a schematic diagram of the limiting pin in this invention.

[0028] Figure 10 This is a schematic diagram of the chuck structure in this invention.

[0029] Among them, 1. chuck; 11. arc-shaped recess; 12. adjusting tooth; 13. limiting groove; 14. high-precision plane; 15. arc-shaped clamping surface; 2. chuck; 21. chuck groove; 22. limiting protrusion; 23. bolt hole; 3. adjusting bolt; 31. limiting section; 32. limiting pin; 4. baffle; 5. laser cladding head; 6. reducer; 7. three-axis linkage device; 71. X-axis drive structure; 72. Y-axis drive structure; 73. Z-axis drive structure; 8. extension structure; 9. bearing ring. Detailed Implementation

[0030] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. In the accompanying drawings and the following description, at least some well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the invention; and, for clarity, the dimensions of some structures may be exaggerated. The features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments; furthermore, the terms “first or I,” “second or II,” “third or III,” etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the present invention. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Reference Figure 1 , Figure 2A large-scale wind turbine bearing race 9 laser cladding repair device is disclosed, comprising a rotary mechanism for mounting the bearing race 9 and a laser cladding head 5 for processing the bearing race 9. The laser cladding head 5 is controlled by a three-axis linkage device 7. Through the precise coordinated movement of the rotary mechanism, the laser cladding head 5, and the three-axis linkage device 7, a complete five-axis linkage processing system is formed. This design perfectly solves the problem of high-performance and high-efficiency remanufacturing of large rotating workpieces (such as wind turbine bearing race 9), fills the gap in domestic large-scale rotary mechanism laser cladding repair equipment, and combines flexibility, high precision, and high efficiency, meeting the repair needs of decommissioned wind turbine bearing race 9.

[0033] Reference Figure 4 , Figure 5 The rotary mechanism includes a clamping structure for holding the bearing ring 9 and a driving structure for driving the clamping structure. The clamping structure is connected to the driving structure via a reducer 6. The driving structure is powered by a servo motor and flexibly transmitted to the reducer 6 via six V-belt pulleys. In this embodiment, the reducer 6 can be a spur gear set (specific parameter values ​​can be selected as module m=14, number of teeth z=80, pressure angle β=20°). The reducer 6 with these parameter values ​​can convert the high-speed rotation of the motor into low-speed rotation. In addition, the gear set is placed in a sealed gearbox to ensure long-term stable operation. The clamping structure includes an adjustable jaw 1 for holding the bearing ring 9 and a chuck 2 for mounting the jaw 1. One end of the chuck 2 is provided with a mounting structure for the jaw 1, and the other end is provided with a connection structure connected to the main shaft inside the reducer. The rotation center of the chuck 2 is the same as the rotation center of the main shaft of the reducer, which can achieve synchronous rotation. In this application, the axial direction of the main shaft of the reducer 6 is taken as the axial direction, and the radial direction is taken as the radial direction.

[0034] The chuck 1 is provided in several portions, and these chuck 1 are arranged in an arc shape around the central axis of the chuck 2, adjustable along the clamping direction of the bearing ring 9. Adjusting the clamping direction of the chuck 1 not only achieves the clamping process of the bearing ring 9, but also allows for clamping different types of bearing rings 9. In addition, the ends of the chuck 1 are provided with baffles 4 for limiting the bearing ring 9. The baffles 4, while clamping the outer circumference of the bearing ring 9, also limit its axial movement, forming a double safety mechanism of "radial clamping + axial limiting." This completely solves the problem of axial movement that may occur during the machining of large rotating parts, greatly improving the rigidity and stability of the entire machining system.

[0035] In one embodiment of this application, four jaws 1 are provided, arranged at 90° to the central axis of the chuck 2. This design follows the six-point positioning principle, precisely restricting the five degrees of freedom of the bearing ring 9—X-axis movement, Y-axis movement, X-axis rotation, Y-axis rotation, and Z-axis movement—through the coordinated clamping of the four jaws 1, while retaining only the Z-axis rotational degree of freedom, ensuring that the ring moves circumferentially around a fixed axis during the cladding process. The balanced clamping force generated by the 90° symmetrical distribution of the four jaws 1 ensures that the center of the ring coincides with the rotational central axis of the chuck 2, thus achieving radial positioning. Due to the large weight of the large wind turbine bearing ring 9, the clamping structure bears the weight of the workpiece, the centrifugal force of rotation, and the slight vibration and torque from the laser cladding head 5. The balanced layout of the four jaws 1 provides sufficient rigidity and stability, while the end baffles 4 ensure the absolute stability of the workpiece in the axial direction, providing a reliable reference for the high-precision machining of the laser cladding head 5.

[0036] Reference Figure 6 ,、 Figure 10 The chuck 1 is an integrally formed "L"-shaped structure. A high-precision plane 14, which contacts the end face of the bearing ring 9, is radially arranged on the inner side of the "L"-shaped chuck 1. This design enables radial clamping, and the plane has extremely low surface roughness and extremely high flatness after final finishing. In the clamping state, this plane achieves a large-area, high-fitting contact with the end face of the bearing ring 9, effectively fulfilling the axial limiting function and preventing axial movement of the workpiece during processing. An arc-shaped clamping surface 15, which mates with the side of the bearing ring 9, is also provided axially on the inner side of the chuck 1. The radius of curvature of this arc-shaped clamping surface 15 is adjusted to match the curvature of the outer ring of the wind turbine bearing ring 9 to be repaired. This design allows the arc-shaped clamping surface 15 to form a large-area, uniform line or surface contact with the side wall of the ring during clamping, rather than the traditional point contact. Its core function is to evenly distribute the huge clamping force to the entire contact area of ​​the collar, thereby greatly avoiding the "out-of-roundness" or plastic deformation of the thin-walled collar caused by local stress concentration, and perfectly protecting the original geometric accuracy of the workpiece.

[0037] In other embodiments of this application, the jaws 1 with arc-shaped clamping surfaces 15 that can mate with the arc surface of the bearing rings 9 of different sizes can be replaced.

[0038] Reference Figure 7The chuck 2 is radially provided with a slot 21 for engaging the claw 1 and a bolt hole 23 for accommodating the adjusting bolt 3. The "L"-shaped claw 1 is radially located within the slot 21, while the high-precision plane 14 and the arc-shaped clamping surface 15 of the claw 1 are located outside the slot 21. The slot 21 and the bolt hole 23 are connected, forming a connection between the claw 1 in the slot 21 and the bolt in the bolt hole 23. To ensure that the claw 1 does not deflect or jam during movement, a limiting protrusion 22 is provided within the slot 21. The claw 1 is radially provided with a limiting groove 13 that slides with the limiting protrusion 22. The claw 1 can be adjusted within the slot 21 through the sliding engagement of the limiting protrusion 22 and the limiting groove 13. The limiting protrusion 22 is embedded in the limiting groove 13, and the two form a high-precision sliding pair. This structure ensures that the jaws 1 move strictly in a straight line along the radial direction (i.e., the clamping direction) of the chuck 2 without any unnecessary rotation or wobbling, thus guaranteeing the synchronization of all jaws 1 and the accuracy of the clamping center.

[0039] Reference Figure 8 , Figure 9 The outer side of the chuck 1, which contacts the adjusting bolt 3, is also provided with an arc-shaped recess 11 that mates with the arc-shaped surface of the bolt. The curved surface of this arc-shaped recess 11 is adapted to the outer circumferential surface of the adjusting bolt 3, ensuring smooth force transmission. More importantly, several adjusting teeth 12 are precisely machined within the arc-shaped recess 11. The tooth pitch and tooth profile of these adjusting teeth 12 match the threads on the adjusting bolt 3, enabling effective engagement. When the position of the chuck 1 needs to be adjusted, the adjusting bolt 3 is rotated. The rotational movement of the adjusting bolt 3 is converted into a pushing or pulling force acting on the arc-shaped recess 11 of the chuck 1 through the engagement of its threads with the adjusting teeth 12. Since the chuck 1 is constrained in the circumferential and vertical directions within the chuck groove 21, this force ultimately drives the entire chuck 1 to move precisely and discretely in a linear fashion along the radial direction of the chuck 2. This "thread-rack" transmission mechanism has higher rigidity and impact resistance compared to the traditional T-nut transmission, and can effectively prevent loosening that may occur in heavy-duty processing environments.

[0040] The adjusting bolt 3 is further provided with a limiting segment 31 in the middle, and a limiting pin 32 is provided at the position of the bolt hole 23 corresponding to the limiting segment 31. The limiting pin 32 is movably disposed in the limiting segment 31 of the adjusting bolt 3. The limiting segment 31 is a section of the adjusting bolt 3 in the middle (i.e., the section located in the bolt hole 23) designed with a smooth axis shape. The two ends of the limiting segment 31 smoothly transition with the threaded portion of the bolt, and its diameter is slightly smaller than the nominal diameter of the thread, forming an annular groove structure. The limiting pin 32 is oriented perpendicular to the adjusting bolt 3. One end of the limiting pin 32 is fixed in the chuck 2 corresponding to the middle of the adjusting bolt 3, and the other end is embedded in the annular groove formed by the limiting segment 31 of the adjusting bolt 3. The limiting pin 32 and the limiting segment 31 of the adjusting bolt 3 constitute an efficient axial movement constraint pair. When the adjusting bolt 3 rotates in the bolt hole 23, its limiting section 31 is "locked" radially by the limiting pin 32, so that the bolt will not come out of the bolt hole 23 when it does not move in the axial direction.

[0041] Reference Figure 3 The three-axis linkage mechanism includes an X-axis drive structure 71, a Y-axis drive structure 72, and a Z-axis drive structure 73. The X-axis drive structure 71 is oriented in the same direction as the main shaft on the reducer 6. The Y-axis drive structure 72 is mounted on the X-axis drive structure 71 via an extension frame in a direction perpendicular to the main shaft on the reducer 6. The Z-axis drive structure 73 is mounted on the Y-axis drive structure 72 in a direction perpendicular to both the X-axis drive structure 71 and the Y-axis drive structure 72. Each of the X-axis, Y-axis, and Z-axis drive mechanisms includes a lead screw driven by a motor, as well as a slide rail and a slider that cooperate with the lead screw.

[0042] X-axis drive structure 71 represents axial feed. This structure is mounted on the frame, and its direction of movement is parallel to the axis of the main shaft on the reducer 6 in the rotary mechanism, i.e., arranged along the axial direction of the bearing ring 9. The X-axis drive structure 71 includes an X-axis precision ball screw driven by an X-axis servo motor, and an X-axis high-strength linear guide rail arranged parallel to the screw. The X-axis slider that mates with the guide rail is fixed to the nut seat of the screw through a connecting plate, forming an integral slide.

[0043] The Y-axis drive structure 72 represents radial feed. This structure is mounted on the X-axis drive structure 71 via a gantry extension frame, and its two ends are fixed to the X-axis slider either by columns or directly. Therefore, the movement direction of the Y-axis drive structure 72 is perpendicular to the axis of the spindle, i.e., arranged radially along the bearing ring 9, and is used to control the cladding head to move closer to or away from the workpiece center. The Y-axis drive structure 72 also includes a Y-axis precision ball screw driven by a Y-axis servo motor, as well as parallel Y-axis linear guides and Y-axis sliders.

[0044] Z-axis drive structure 7353 represents vertical / normal feed, and this structure is mounted on the Y-axis slider of Y-axis drive structure 72. Its direction of movement is perpendicular to both the X and Y axes, that is, perpendicular to the plane formed by the main spindle axis and the radial direction. Its main function is to adjust the working distance between the laser cladding head 5 and the workpiece surface, and it can be used to achieve layered cladding. The Z-axis drive structure 73 also includes a Z-axis precision ball screw driven by a Z-axis servo motor, as well as parallel Z-axis linear guides and Z-axis sliders.

[0045] The aforementioned three-axis linkage structure employs a servo motor-driven precision ball screw pair, resulting in high transmission efficiency, minimal backlash, and high positioning accuracy. Combined with high-strength linear guides and sliders, it forms a highly rigid motion platform, effectively suppressing vibrations during processing and providing stable dynamic performance for laser cladding. The gantry-style layout ensures sufficient span on the Y-axis to fully cover the entire working width of the large bearing ring 9. The independent modular design of the three axes allows the equipment to flexibly adapt to repair tasks involving bearing rings of different sizes.

[0046] The laser cladding head 5 extends to the processing position via an extension structure 8. One end of the extension structure 8 is fixed to the three-axis linkage mechanism, and the other end is fitted with the laser cladding head 5 via a mounting slot. The extension structure 8 is mounted on the slider of the Z-axis drive structure 73, and has an extension plate extending along the main axis. The extension plate allows the relatively small laser cladding head 5 to reach various positions on the bearing ring 9 for processing without being affected by the Z-axis drive structure 73.

[0047] The above description is merely a preferred embodiment of the present invention. Any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments without departing from the scope of the present invention and based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. A large wind power bearing ring laser cladding repair equipment, characterized in that: The application relates to a rotary mechanism for mounting bearing rings and a laser cladding head for processing the bearing rings, wherein the laser cladding head is controlled through a three-axis linkage device; the rotary mechanism comprises a clamping structure for clamping the bearing rings and a driving structure for driving the clamping structure, the clamping structure is connected with the driving structure through a speed reducer, and the clamping structure comprises adjustable clamping claws for clamping the bearing rings and a chuck for mounting the clamping claws.

2. The large wind power bearing ring laser cladding repair equipment according to claim 1, characterized in that: The clamping claws are arranged in a circular arc shape around the center shaft of the chuck and are adjustably arranged on the chuck along the clamping direction of the bearing rings; the end of the clamping claw is further provided with a baffle for limiting the bearing ring.

3. The laser cladding repair device for large wind power bearing ring according to claim 2, characterized in that: The clamping claw is an integral "L" type structure, the inner side of the "L" type clamping claw is provided with a high-precision plane in contact with the end face of the bearing ring along the radial direction and is provided with an arc clamping surface in contact with the side of the bearing ring along the axial direction.

4. The laser cladding repair equipment for large wind power bearing ring according to claim 3, characterized in that: The chuck is further provided with a clamping groove for accommodating the clamping claw and a bolt hole for accommodating an adjusting bolt along the radial direction, the clamping groove and the bolt hole are in communication, one side of the outer side of the clamping claw in contact with the adjusting bolt is further provided with an arc-shaped recess matched with the arc surface of the bolt, and a plurality of adjusting teeth matched with the threads of the adjusting bolt are further arranged in the arc-shaped recess.

5. The laser cladding repair device for large wind power bearing ring according to claim 4, characterized in that: The clamping groove is further provided with a limiting protrusion, the clamping claw is provided with a limiting groove in sliding fit with the limiting protrusion in the radial direction, and the clamping claw is adjustably arranged in the clamping groove through the sliding fit of the limiting protrusion and the limiting groove.

6. The large wind power bearing ring laser cladding repair device according to claim 4, characterized in that: The middle part of the adjusting bolt is further provided with a limiting section, the position of the corresponding bolt hole is further provided with a limiting pin, and the limiting pin is movably arranged on the limiting section of the adjusting bolt.

7. The laser cladding repair device for large wind power bearing ring according to claim 1, characterized in that: The laser cladding head extends to the processing position through an extension structure, one end of the extension structure is fixed on the three-axis linkage mechanism, and the other end is provided with the laser cladding head through a mounting groove.

8. The laser cladding repair device for large wind power bearing ring according to claim 7, characterized in that: The three-axis linkage mechanism comprises an X-axis driving structure, a Y-axis driving structure and a Z-axis driving structure, the direction of the X-axis driving structure is the same as the direction of the main shaft on the speed reducer, the Y-axis driving structure is arranged on the X-axis driving structure through an extension frame in a direction perpendicular to the main shaft of the speed reducer, and the Z-axis driving structure is arranged on the Y-axis driving structure in a direction perpendicular to the X-axis driving structure and the Y-axis driving structure.

9. The laser cladding repair device for large wind power bearing ring according to claim 8, characterized in that: The X-axis driving mechanism, the Y-axis driving mechanism and the Z-axis driving mechanism all comprise a lead screw driven by a motor and a sliding rail and a sliding block matched with the lead screw.

10. A large wind power bearing ring laser cladding repair method, comprising the large wind power bearing ring laser cladding repair device of any one of claims 1-9, characterized in that: The method comprises the following steps: S1: first, adjusting the clamping claws arranged on the chuck by using a tool so that the bearing rings can be placed in the clamping area of the clamping claws; S2: adjusting the clamping claws to clamp the bearing rings again; S3: starting the three-axis linkage mechanism to adjust the laser cladding head to the processing position; S5: starting the laser cladding head to process the bearing rings.

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