Multi-axis linkage wind power gear numerical control grinding equipment

Abstract

The application discloses a multi-axis linkage wind power gear numerical control grinding equipment and belongs to the technical field of gear machining. The equipment is constructed based on a numerical control milling machine body and comprises an X-axis, a Y-axis, a Z-axis linear sliding table, an A-axis workpiece rotating table and a C-axis grinding wheel electric spindle, so that multi-axis development grinding is realized. In particular, a grinding wheel dressing assembly with double rotation degrees of freedom which is composed of a B-axis and a D-axis is integrally arranged on the X-axis sliding table, the B-axis drives a diamond wheel to rotate at high speed, the D-axis drives the diamond wheel to swing at an angle, and the three linear axes are cooperated to realize online precise dressing of the grinding wheel. The application integrates grinding and dressing functions, can repair the profile online without disassembling the grinding wheel, and is high in machining precision and good in efficiency.

Description

Technical Field

[0001] This application relates to the technical field of precision gear machining, and more specifically, to a multi-axis linkage CNC grinding equipment for wind turbine gears. Background Technology

[0002] As wind turbine generators develop towards larger sizes and higher power outputs, wind turbine gears, as key core transmission components in wind turbine gearboxes, directly affect the overall performance and service life of the turbine through their machining accuracy and surface quality. Wind turbine gears typically feature large modules, large diameters, and hardened tooth surfaces, placing extremely stringent requirements on tooth profile accuracy, tooth direction accuracy, and tooth surface roughness. Grinding, as the final process in gear manufacturing, is also a crucial step in determining the final precision of the tooth surface. Currently, CNC forming wheel grinding machines are primarily used for this process. However, existing dedicated CNC grinding machines generally suffer from high equipment costs, large footprints, and poor versatility. This is especially problematic for small and medium-sized gear manufacturing enterprises, where purchasing dedicated grinding machines involves significant investment and a long payback period.

[0003] In grinding wheel dressing, the forming accuracy of the workpiece in CNC profile grinding directly depends on the accuracy of the grinding wheel profile. Wear is inevitable during grinding, requiring timely shape dressing to prevent machining errors. Traditional grinding wheel dressing methods typically involve offline dressing, requiring the grinding wheel to be removed from the machine tool and transported to a dedicated dressing device. This not only necessitates machine downtime but also introduces multiple positioning errors during workpiece disassembly and reassembly, affecting machining accuracy and extending the machining cycle. Although some gear grinding machines are equipped with grinding wheel dressing components, existing dressing devices are mostly fixed structures, and the flexibility and convenience of dressing still need improvement.

[0004] Furthermore, while existing CNC milling machines are widely used in various machining fields, they typically lack gear grinding capabilities, making them unsuitable for direct high-precision grinding of wind turbine gears. Modifying existing CNC milling machines to include gear grinding functionality would significantly reduce equipment investment costs, demonstrating substantial economic value and promising application prospects. (Invention Content)

[0005] To address the issues of high cost and lack of flexible dressing devices for dedicated CNC gear grinding machines, this application provides a multi-axis linkage CNC gear grinding equipment for wind turbines.

[0006] A multi-axis linkage CNC grinding machine for wind turbine gears includes:

[0007] CNC machine body;

[0008] The Y-axis slide is slidably mounted on the CNC machine body and slides along the Y-axis direction.

[0009] Y-axis drive unit, which is mounted on the CNC machine body and connected to the Y-axis slide, is used to drive the Y-axis slide to reciprocate along the Y-axis direction;

[0010] The X-axis slide is slidably mounted on the Y-axis slide and can slide along the X-axis direction;

[0011] An X-axis drive unit is disposed on and connected to the Y-axis slide, and is used to drive the X-axis slide to reciprocate along the X-axis direction.

[0012] The Z-axis slide is slidably mounted on the CNC machine body and is located above the movement paths of the Y-axis slide and the X-axis slide. The Z-axis slide can slide along the Z-axis direction.

[0013] Z-axis drive unit, the Z-axis drive unit is disposed on the CNC machine body and connected to the Z-axis slide, and is used to drive the Z-axis slide to reciprocate along the Z-axis direction;

[0014] A workpiece clamping assembly includes an A-axis rotary shaft and an A-axis drive component. The A-axis drive component is disposed on the X-axis slide and is connected to the A-axis rotary shaft. The axial direction of the A-axis rotary shaft is parallel to the X-axis. The A-axis drive component drives the A-axis rotary shaft to rotate. The A-axis rotary shaft is used to mount the gear to be processed.

[0015] A grinding assembly includes a C-axis rotary axis, a grinding wheel, and a C-axis drive component. The C-axis drive component is mounted on the Z-axis slide and connected to the C-axis rotary axis. The axial direction of the C-axis rotary axis is parallel to the Z-axis. The C-axis rotary axis is driven to rotate by the C-axis drive component. The grinding wheel is fixed to the bottom end of the C-axis rotary axis, and its center is on the same straight line as the axis of the C-axis rotary axis.

[0016] A grinding wheel dressing assembly includes a B-axis rotating shaft, a diamond wheel, a B-axis drive, a D-axis rotating shaft, and a D-axis drive. The D-axis drive is mounted on the X-axis slide. The D-axis rotating shaft is connected to the D-axis drive and is driven to rotate. The D-axis rotating shaft is parallel to the A-axis rotating shaft. The B-axis drive is fixed to the D-axis rotating shaft and is connected to the B-axis drive, driving the B-axis rotating shaft to rotate. The centerline of the B-axis rotating shaft is perpendicular to the centerline of the D-axis rotating shaft. The diamond wheel is connected to the B-axis rotating shaft, and the center of the diamond wheel is on the same straight line as the centerline of the B-axis rotating shaft.

[0017] The control system includes Y-axis drive, X-axis drive, Z-axis drive, A-axis drive, C-axis drive, B-axis drive, and D-axis drive, all of which are electrically connected to the control system.

[0018] Preferably, the Y-axis drive, X-axis drive, and Z-axis drive are all configured as lead screw modules.

[0019] Preferably, both the A-axis drive and the D-axis drive are configured as CNC horizontal direct drive rotary tables.

[0020] Preferably, both the C-axis drive and the B-axis drive are electric spindles.

[0021] Preferably, the grinding wheel is a CBN cup-shaped grinding wheel.

[0022] Preferably, it also includes a flatness detection component, which includes a cylinder and a contact trigger probe connected to the cylinder. The cylinder is disposed on the Z-axis slide, and the contact trigger probe is driven to reciprocate along the Z-axis direction by the cylinder.

[0023] Preferably, the X-axis slide is further provided with a movable tip, which is located at the end of the A-axis rotation axis away from the A-axis drive member, and the center of the end face of the A-axis rotation axis is pressed by the pin of the movable tip.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. Based on the machine structure of a traditional CNC milling machine, this application integrates an A rotary axis for driving workpiece rotation, a C rotary axis for driving high-speed rotation of the grinding wheel, and a diamond wheel and its B / D rotary axes for online dressing of the grinding wheel. This upgrades conventional milling equipment into a high-precision multi-axis linkage gear grinding machining center, significantly reducing the equipment purchase cost for high-precision grinding of wind turbine gears and effectively reducing the equipment footprint. It is particularly suitable for small and medium-sized gear manufacturing enterprises, offering high economic applicability and return on investment. At the same time, it greatly expands the processing functions and application scope of the original CNC machine tool.

[0026] Secondly, through the precise coordinated control of the linear motion of the X, Y, and Z axes and the rotational motion of the A and C axes by the control system, this application can realize multi-axis linkage interpolation motion, enabling the grinding wheel to perform generating grinding along the complex tooth surface contour trajectory, thereby meeting the stringent requirements of large module and large diameter hard tooth surface gears for tooth profile accuracy, tooth direction accuracy and tooth surface roughness, and ensuring stable machining accuracy and excellent surface quality.

[0027] This application integrates a grinding wheel dressing assembly consisting of a B-axis, a D-axis, and a diamond wheel within the equipment. This assembly utilizes the D-axis to drive the diamond wheel to rotate around an axis parallel to the A-axis, and combines this with the B-axis to drive the diamond wheel to rotate around an axis perpendicular to the A-axis. This enables flexible adjustment of the diamond wheel's spatial posture, allowing for online, rapid, and high-precision shaping dressing of the grinding wheel. This avoids the cumbersome operation of removing the grinding wheel from the machine tool required in traditional offline dressing, eliminating the need for machine downtime and preventing repetitive positioning errors caused by repeated disassembly and reassembly. It significantly shortens auxiliary processing time, effectively ensuring the consistency and stability of the processed dimensions of a batch of workpieces, and significantly improving production efficiency and processing quality. Furthermore, the parallel arrangement of the D-axis and A-axis in the grinding wheel dressing assembly allows for rapid switching between the grinding wheel dressing process and the gear grinding process at the same station and under the same clamping condition, further enhancing the continuity and controllability of the processing.

[0028] 2. Furthermore, the flatness detection component enables online detection of the grinding wheel or workpiece, achieving closed-loop control of grinding, detection, and dressing, further ensuring the reliability of machining accuracy. Combined with the auxiliary support of the movable center for the gear to be machined, it significantly enhances the workpiece clamping rigidity, helps suppress vibration during heavy-duty grinding, and thus obtains better tooth surface machining quality. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the gear grinding state of a multi-axis linkage wind turbine gear CNC grinding equipment according to this embodiment.

[0030] Figure 2 This is a schematic diagram of the grinding wheel status of a multi-axis linkage wind turbine gear CNC grinding equipment according to this embodiment.

[0031] Reference numerals: 1. CNC machine body; 2. Y-axis slide; 3. X-axis slide; 4. Y-axis drive; 5. X-axis drive; 6. Z-axis slide; 7. Z-axis drive; 8. A-axis rotary axis; 9. A-axis drive; 10. C-axis rotary axis; 11. Grinding wheel; 12. C-axis drive; 13. B-axis rotary axis; 14. Diamond wheel; 15. B-axis drive; 16. D-axis rotary axis; 17. D-axis drive; 18. Cylinder; 19. Contact trigger probe; 20. Moving center; Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Reference Figure 1 A multi-axis linkage CNC grinding machine for wind turbine gears is disclosed, its overall structure being constructed based on an existing CNC milling machine body. It includes a CNC machine body 1, on which a Y-axis slide 2 and an X-axis slide 3 are respectively arranged along two orthogonal directions on a horizontal plane. The Y-axis slide 2 is slidably mounted on the CNC machine body 1 and is driven by a Y-axis drive 4 mounted on the CNC machine body 1 to perform reciprocating sliding motion along the Y-axis direction. The X-axis slide 3 is slidably mounted on the Y-axis slide 2 and is driven by an X-axis drive 5 mounted on the Y-axis slide 2 to perform reciprocating sliding motion along the X-axis direction. Through the stacked sliding cooperation structure of the Y-axis slide 2 and the X-axis slide 3, the X-axis slide 3 can achieve precise movement relative to the CNC machine body 1 at any coordinate position within the horizontal plane defined by the X and Y axes. Meanwhile, a Z-axis slide 6 is slidably mounted on the CNC machine body 1, above the movement paths of the Y-axis slide 2 and the X-axis slide 3. This Z-axis slide 6 is driven by a corresponding Z-axis drive component 7 to perform reciprocating sliding motion along the vertical Z-axis direction. In this way, three linear feed motion axes are formed in three-dimensional space for the equipment, namely the X-axis, Y-axis, and Z-axis. The coordinated motion of these three axes provides the basis for the spatial trajectory motion of the subsequent gear grinding process.

[0034] Reference Figure 1 On the X-axis slide 3, a workpiece clamping assembly for clamping the gear to be processed is provided. This workpiece clamping assembly includes an A-axis rotary shaft 8 and an A-axis drive component 9 for driving the A-axis rotary shaft 8. Specifically, the A-axis drive component 9 is fixedly mounted on the upper surface of the X-axis slide 3, its output end is connected to the A-axis rotary shaft 8, and the axial direction of the A-axis rotary shaft 8 is set to be parallel to the X-axis direction. Driven by the A-axis drive component 9, the A-axis rotary shaft 8 can rotate precisely around its own axis, and the gear to be processed is thus mounted and fixed on the A-axis rotary shaft 8, rotating together with it. Meanwhile, on the Z-axis slide 6, a grinding assembly is provided. This grinding assembly includes a C-axis rotary shaft 10, a grinding wheel 11, and a C-axis drive component 12 for driving the C-axis rotary shaft 10. Specifically, the C-axis drive unit 12 is fixedly mounted on the Z-axis slide 6, and its output end is connected to the C-axis rotation 10. The axial direction of the C-axis rotation 10 is set to be parallel to the Z-axis direction, that is, the C-axis rotation 10 is arranged vertically. The grinding wheel 11 is fixedly connected to the bottom end of the C-axis rotation 10, and the central axis of the grinding wheel 11 is on the same straight line as the axis of the C-axis rotation 10, thereby ensuring that the grinding wheel 11 has good dynamic balance characteristics when rotating at high speed with the C-axis rotation 10. Driven by the C-axis drive unit 12, the grinding wheel 11 rotates at high speed around the vertical C-axis to form the main cutting motion required for grinding.

[0035] Reference Figure 1During the grinding process, the gear to be processed rotates horizontally around the A-axis under the drive of the A-axis rotation 8, while the grinding wheel 11 rotates at high speed around the vertical C-axis under the drive of the C-axis rotation 10. Through the coordinated control of the Y-axis drive 4, X-axis drive 5, and Z-axis drive 7 by the control system, a precise relative generating motion is generated between the A-axis rotation 8 mounted on the X-axis slide 3 and the gear to be processed thereon, and the C-axis rotation 10 mounted on the Z-axis slide 6 and the grinding wheel 11 thereon. Specifically, the gear to be processed moves horizontally with the X-axis slide 3 and the Y-axis slide 2, while the grinding wheel 11 moves vertically with the Z-axis slide 6. Combined with the indexing rotation of the A-axis, the grinding wheel 11 can perform generating grinding along the tooth surface contour of the gear to be processed. This multi-axis linkage control method can accurately generate involute tooth profiles and, through multiple cycles of indexing rotation and feed motion, complete the precision grinding of all teeth of the entire gear. Since the axis of the rotating shaft 8 is parallel to the X-axis, the axis of the gear to be processed is in a horizontal state. This horizontal clamping method is conducive to the stable support and clamping convenience of large wind turbine gears, and also facilitates the smooth removal of grinding chips during the grinding process.

[0036] Reference Figure 2To achieve online precision dressing of the worn grinding wheel 11, this application also integrates a grinding wheel 11 dressing assembly into the equipment. This grinding wheel 11 dressing assembly includes a B-axis rotating shaft 13, a diamond wheel 14, a B-axis drive component 15, a D-axis rotating shaft 16, and a D-axis drive component 17, all mounted on the X-axis slide 3 and arranged side-by-side with the workpiece clamping assembly. Specifically, the D-axis drive component 17 is fixedly mounted on the X-axis slide 3. The D-axis rotating shaft 16 is connected to the output end of the D-axis drive component 17, driving the D-axis rotating shaft 16 to rotate around its own axis. The axial direction of the D-axis rotating shaft 16 is set to be parallel to the axial direction of the A-axis rotating shaft 8, i.e., both are parallel to the X-axis direction. The B-axis drive component 15 is fixedly mounted on the D-axis rotating shaft 16, allowing the B-axis drive component 15 to rotate around the D-axis along with the D-axis rotating shaft 16. The B-axis rotating shaft 13 is connected to the output end of the B-axis drive 15. The B-axis drive 15 drives the B-axis rotating shaft 13 to rotate around its own axis, and the axis of the B-axis rotating shaft 13 is perpendicular to the axis of the D-axis rotating shaft 16 in space. The diamond wheel 14 is fixedly connected to the B-axis rotating shaft 13, and the center of the diamond wheel 14 is on the same straight line as the axis of the B-axis rotating shaft 13 to ensure the dynamic balance of the diamond wheel 14 during high-speed rotation. With the above structure, the diamond wheel 14 can rotate at high speed around the B-axis under the drive of the B-axis drive 15, forming the cutting motion required for dressing the grinding wheel 11; on the other hand, the diamond wheel 14, together with the entire B-axis drive 15, can rotate and oscillate around the D-axis under the drive of the D-axis drive 17, thereby adjusting the attitude angle of the diamond wheel 14 in space. Meanwhile, since the entire grinding wheel 11 grinding assembly is mounted on the X-axis slide 3, it can also move along the X-axis direction with the X-axis slide 3. Combined with the movement of the Y-axis slide 2 along the Y-axis direction and the movement of the Z-axis slide 6 along the Z-axis direction, this allows the diamond wheel 14 to achieve arbitrary spatial position and orientation adjustment relative to the grinding wheel 11. This composite motion structure of dual rotary axes and three linear axes enables the diamond wheel 14 to flexibly adjust its feed trajectory and orientation angle according to the actual contour shape of the worn grinding wheel 11, thereby precisely shaping and dressing the working surface of the grinding wheel 11. Specifically, when the grinding wheel 11 needs to be dressed, the control system drives the X-axis slide 3, Y-axis slide 2, and Z-axis slide 6 to move the grinding wheel 11 to the dressing station. Simultaneously, the D-axis rotary axis 16 is driven to swing the diamond wheel 14 to a suitable angle, and then the B-axis rotary axis 13 is driven to make the diamond wheel 14 rotate at high speed. Then, by controlling the interpolation motion of each linear axis, the high-speed rotating diamond wheel 14 performs micro-cutting on the surface of the grinding wheel 11 along a preset dressing trajectory to restore the correct contour shape of the grinding wheel 11. This online dressing method eliminates the need to remove the grinding wheel 11 from the equipment or stop the machine, significantly shortening the dressing auxiliary time and avoiding the accumulation of positioning errors caused by repeated disassembly and reassembly of the grinding wheel 11. This effectively ensures the stability and consistency of the machining accuracy of the entire batch of gears.

[0037] Each drive component in this application is electrically connected to the equipment's control system, which employs an industrial CNC system. This system has pre-set CNC programs for gear grinding and wheel dressing. Based on the preset machining programs, the control system coordinates and controls the movement speed and position of the Y-axis drive 4, X-axis drive 5, Z-axis drive 7, A-axis drive 9, C-axis drive 12, B-axis drive 15, and D-axis drive 17 in real time, thereby achieving multi-axis linkage interpolation motion during the grinding process and during wheel dressing.

[0038] Reference Figure 1-2 In a preferred embodiment of this application, the Y-axis drive 4, X-axis drive 5, and Z-axis drive 7 are all configured as lead screw modules. The lead screw module includes a servo motor, a lead screw, and a nut seat. The servo motor drives the lead screw to rotate, and the nut seat is fitted onto the lead screw and fixedly connected to the corresponding slide, thereby converting the rotational motion of the lead screw into the linear reciprocating motion of the slide. The lead screw module has the advantages of high transmission accuracy, good rigidity, and stable feed speed, and can meet the stringent requirements of linear feed axis positioning accuracy and repeatability in the precision grinding of wind turbine gears.

[0039] Reference Figure 1-2 In another preferred embodiment of this application, both the A-axis drive component 9 and the D-axis drive component 17 are configured as CNC horizontal direct-drive rotary tables. The CNC horizontal direct-drive rotary table uses a torque motor to directly drive the rotary axes, eliminating the need for intermediate transmission mechanisms such as worm gears. It features zero backlash, high rigidity, high response speed, and high positioning accuracy, ensuring accurate indexing and stable rotation of the A-axis 8 and D-axis 16 under heavy-load conditions.

[0040] Reference Figure 1-2 In another preferred embodiment of this application, both the C-axis drive 12 and the B-axis drive 15 are configured as electric spindles. The electric spindle integrates the motor rotor and the spindle into one unit, with the motor stator directly driving the spindle rotation. It has the advantages of compact structure, high speed, low vibration, and smooth operation. The C-axis drive 12, as the electric spindle driving the grinding wheel 11 to rotate at high speed, can provide the high linear speed and high rotational accuracy required for grinding. The B-axis drive 15, as the electric spindle driving the diamond wheel 14 to rotate at high speed, can provide the stable cutting speed required for dressing, and its compact structure helps reduce the space occupied by the entire grinding wheel 11 dressing assembly.

[0041] Reference Figure 1-2As a further preferred embodiment of this application, the aforementioned grinding wheel 11 is a CBN cup-shaped grinding wheel 11. CBN abrasive has the characteristics of high hardness, good wear resistance, and excellent thermal stability, and is particularly suitable for precision grinding of hard tooth surface materials such as wind turbine gears, and can maintain a sharp cutting edge and stable grinding performance for a long time. The end face of the cup-shaped grinding wheel 11 can be used for form grinding, and its inner conical surface and outer cylindrical surface facilitate precise coaxial assembly with the C-rotating shaft 10.

[0042] Reference Figure 1-2 In another preferred embodiment of this application, the device further includes a flatness detection component, which includes a cylinder 18 and a contact-type trigger probe 19 connected to the piston rod end of the cylinder 18. The cylinder 18 is fixedly mounted on the Z-axis slide 6, and the contact-type trigger probe 19 is driven to reciprocate along the Z-axis direction by the extension and retraction of the piston rod of the cylinder 18. When it is necessary to detect the surface flatness of the grinding wheel 11 or the tooth surface accuracy of the gear to be processed, the control system drives the Z-axis slide 6 to move the cylinder 18 to the detection position. Then, the cylinder 18 drives the contact-type trigger probe 19 to extend downward until the probe stylus contacts the surface of the workpiece or grinding wheel 11. The deflection of the stylus triggers a measurement signal, thereby obtaining surface contour data. This flatness detection component realizes the online detection function in the grinding process, enabling the equipment to complete the closed-loop processing flow of grinding-detection-correction in one clamping, further ensuring the reliability of processing accuracy. The contact-type trigger probe 19 is prior art and will not be described in detail in this application.

[0043] Reference Figure 1-2 As a further preferred embodiment of this application, the X-axis slide 3 is further provided with a movable center 20. The movable center 20 is located at the end of the A-axis rotating shaft 8 away from the A-axis drive member 9. The axis of the movable center 20 is collinear with the axis of the A-axis rotating shaft 8. The movable center 20 presses against the center of the end face of the A-axis rotating shaft 8, thereby providing auxiliary support for the gear to be machined. The movable center 20, in conjunction with the center of the end face of the A-axis rotating shaft 8, can effectively enhance the clamping rigidity of the gear to be machined during the grinding process. Especially for large-diameter, high-mass wind turbine gears, the movable center 20 can suppress the vibration and deformation caused by the cutting force during heavy-load grinding, thereby obtaining better tooth surface machining quality and shape accuracy.

[0044] In summary, this application integrates a multi-axis linkage workpiece rotation axis, a grinding wheel 11 rotation axis, and an online grinding wheel 11 dressing device with dual rotational degrees of freedom onto the body of a traditional CNC milling machine. This achieves high-precision and high-efficiency generating grinding of wind turbine gears and online precision dressing of the grinding wheel 11. It significantly reduces equipment cost and significantly improves machining accuracy, production efficiency, and equipment versatility, demonstrating outstanding practical value and broad application prospects.

[0045] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-axis linkage CNC grinding equipment for wind turbine gears, characterized in that, include: CNC machine body; The Y-axis slide is slidably mounted on the CNC machine body and slides along the Y-axis direction. Y-axis drive unit, which is mounted on the CNC machine body and connected to the Y-axis slide, is used to drive the Y-axis slide to reciprocate along the Y-axis direction; The X-axis slide is slidably mounted on the Y-axis slide and can slide along the X-axis direction; An X-axis drive unit is disposed on and connected to the Y-axis slide, and is used to drive the X-axis slide to reciprocate along the X-axis direction. The Z-axis slide is slidably mounted on the CNC machine body and is located above the movement paths of the Y-axis slide and the X-axis slide. The Z-axis slide can slide along the Z-axis direction. Z-axis drive unit, the Z-axis drive unit is disposed on the CNC machine body and connected to the Z-axis slide, and is used to drive the Z-axis slide to reciprocate along the Z-axis direction; A workpiece clamping assembly includes an A-axis rotary shaft and an A-axis drive component. The A-axis drive component is disposed on the X-axis slide and is connected to the A-axis rotary shaft. The axial direction of the A-axis rotary shaft is parallel to the X-axis. The A-axis drive component drives the A-axis rotary shaft to rotate. The A-axis rotary shaft is used to mount the gear to be processed. A grinding assembly includes a C-axis rotary axis, a grinding wheel, and a C-axis drive component. The C-axis drive component is mounted on the Z-axis slide and connected to the C-axis rotary axis. The axial direction of the C-axis rotary axis is parallel to the Z-axis. The C-axis rotary axis is driven to rotate by the C-axis drive component. The grinding wheel is fixed to the bottom end of the C-axis rotary axis, and its center is on the same straight line as the axis of the C-axis rotary axis. A grinding wheel dressing assembly includes a B-axis rotating shaft, a diamond wheel, a B-axis drive, a D-axis rotating shaft, and a D-axis drive. The D-axis drive is mounted on the X-axis slide. The D-axis rotating shaft is connected to the D-axis drive and is driven to rotate. The D-axis rotating shaft is parallel to the A-axis rotating shaft. The B-axis drive is fixed to the D-axis rotating shaft and is connected to the B-axis drive, driving the B-axis rotating shaft to rotate. The centerline of the B-axis rotating shaft is perpendicular to the centerline of the D-axis rotating shaft. The diamond wheel is connected to the B-axis rotating shaft, and the center of the diamond wheel is on the same straight line as the centerline of the B-axis rotating shaft. The control system includes Y-axis drive, X-axis drive, Z-axis drive, A-axis drive, C-axis drive, B-axis drive, and D-axis drive, all of which are electrically connected to the control system.

2. The multi-axis linkage wind turbine gear CNC grinding equipment according to claim 1, characterized in that: The Y-axis drive, X-axis drive, and Z-axis drive are all configured as lead screw modules.

3. The multi-axis linkage wind turbine gear CNC grinding equipment according to claim 1, characterized in that: Both the A-axis drive and the D-axis drive are configured as CNC horizontal direct drive rotary tables.

4. The multi-axis linkage wind turbine gear CNC grinding equipment according to claim 1, characterized in that: Both the C-axis drive and the B-axis drive are electric spindles.

5. The multi-axis linkage wind turbine gear CNC grinding equipment according to claim 1, characterized in that: The grinding wheel is a CBN cup-shaped grinding wheel.

6. The multi-axis linkage wind turbine gear CNC grinding equipment according to claim 1, characterized in that: It also includes a flatness detection component, which includes a cylinder and a contact trigger probe connected to the cylinder. The cylinder is set on the Z-axis slide, and the contact trigger probe is driven to reciprocate along the Z-axis direction by the cylinder.

7. The multi-axis linkage wind turbine gear CNC grinding equipment according to claim 1, characterized in that: The X-axis slide is also provided with a movable center, which is located at the end of the A-axis rotation axis away from the A-axis drive member. The center of the A-axis rotation axis end face is pressed by the pin of the movable center.

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