A drilling device for producing a special-shaped wind power flange

Abstract

The present application relates to the technical field of flange manufacturing, and discloses a drilling device for special-shaped wind power flange production, which comprises a milling machine main body composed of a bed body, a main shaft and a two-dimensional moving platform, and a lifting platform, the output end of the two-dimensional moving platform is fixedly connected with a base through a bed saddle, the top end of the base is rotatably connected with a workbench, and the surface of the workbench is provided with a plurality of groups of dovetail grooves arranged in a ring-shaped symmetrical manner. The present application provides auxiliary geometric center positioning for the flange through the synchronous radial extension of the plurality of supporting blocks, reduces the positioning difficulty of the special-shaped flange, and applies an auxiliary supporting force opposite to the pressing plate to the top end reinforcing rib of the inner ring wall of the flange through the gasket assembly, so that the elastic deformation of the flange under the local load pressure is reduced, the positioning of the workbench as the machining reference is more accurate, the machining precision during drilling is improved, and the bending deformation caused by the pressing plate is corrected with the most effective force arm without interfering with the reference of the sealing surface.

Description

Technical Field

[0001] This invention relates to the field of flange manufacturing technology, specifically to a drilling device for producing irregularly shaped wind turbine flanges. Background Technology

[0002] Wind turbine flanges are important mechanical connectors used to connect key components in wind turbine generator sets. Their main function is to connect structures such as the tower and nacelle, different sections of the tower, or the hub and blades. Therefore, dozens to hundreds of high-precision bolt holes need to be machined on the circumference of the flange. Due to the large diameter, numerous holes, and high precision requirements of wind turbine flanges, their positioning and clamping during machining are quite difficult.

[0003] In existing technologies, a pressure plate is typically used to press the flange against the workbench surface, ensuring that the sealing surface is in close contact with the top surface of the workbench as a horizontal machining reference. Since the pressure plate is essentially a concentrated load over a small area, and the flange itself lacks sufficient rigidity, it will produce local elastic deformation. This will cause the pressure between the flange outer edge and the sealing surface in the area between the pressure plates to decrease or even separate. At the midpoint between every two adjacent pressure plates, the flange outer edge rebounds upwards. Directly below the pressure plate, the flange is pressed to the maximum extent, and the inner ring sidewall of the flange will warp upwards as a whole. The inner edge of the sealing surface will be affected by the bending and tend to warp downwards, affecting the flange machining.

[0004] Although a symmetrical pressure plate layout can significantly improve the overall force balance, the inherent local concentration effect of discrete clamping force can still cause the workpiece to undergo periodic wave-like elastic deformation, resulting in insufficient contact pressure or separation in local areas of the sealing surface. Especially when machining irregular flanges, the symmetrically arranged pressure plates cannot achieve an ideal symmetrical force state, causing the flange to tilt as a whole with a rigid rotation tendency, which greatly affects the machining accuracy of the flange. Summary of the Invention

[0005] The purpose of this invention is to provide a drilling device for the production of irregular-shaped wind turbine flanges, so as to solve at least one technical problem existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drilling device for producing irregularly shaped wind turbine flanges, comprising a milling machine body consisting of a bed, a spindle, a two-dimensional moving platform, and a lifting platform. The output end of the two-dimensional moving platform is fixedly mounted with a base via a saddle. A worktable is rotatably mounted on the top of the base. The surface of the worktable is provided with multiple sets of dovetail grooves arranged in a ring symmetrical distribution. A pressure plate is slidably installed in each dovetail groove. An auxiliary centering assembly is provided above the base. The auxiliary centering assembly is provided with multiple sets of support blocks that can fit against the inner ring wall of the flange. Multiple sets of laser rangefinders are provided on the top of each support block. It also includes a drive assembly for driving the worktable to rotate for adjustment or locking; It also includes a pad assembly that can provide auxiliary support to the flange at the top of the inner ring wall based on the distance between the support block and the top of the flange inner ring wall.

[0007] Preferably, the auxiliary centering component includes a fixed sleeve fixedly installed on the top surface of the base. The fixed sleeve has a rotating cavity, and the rotating cavity has a rotating disk that can be rotated and adjusted. The rotating disk has multiple sets of sliding grooves. Multiple sets of sliding rods are slidably installed in the through grooves opened on the side wall of the fixed sleeve. The number of sliding rods is the same as that of the pressure plate. Each sliding rod has a sliding pin on its bottom surface that can slide along the sliding groove. The ends of each sliding rod that are far apart from each other are fixedly connected to the support block.

[0008] Preferably, the base has a cavity, a reduction motor is installed in the cavity, a worm gear is rotatably mounted on the inner wall of the cavity via a bearing seat, a rotating shaft is rotatably mounted on the bottom surface of the cavity, a worm wheel that can mesh with the worm gear is fixedly mounted on the outer wall of the rotating shaft, and one end of the rotating shaft that passes through the fixed sleeve is fixedly connected to the bottom surface of the rotating disk.

[0009] Preferably, the drive assembly includes a toothed groove formed in the inner ring wall of the base, a large geared motor is provided at the bottom of the base, a drive gear is fixedly installed at the end of the main shaft of the large geared motor, and the drive gear can mesh with the toothed groove in the inner ring wall of the base. Multiple sets of slots are provided at the top of the base, and an L-shaped limiting block is rotatably installed in each slot. A limiting groove is provided at the bottom of the limiting block, and a slider is slidably installed in the limiting groove. The slider is fixedly connected to the end of the cylinder main shaft.

[0010] Preferably, the pad assembly includes multiple sets of miniature cylinders fixedly installed on the outer wall of the fixed sleeve. The output shaft end of the miniature cylinder is fixedly installed with a wedge-shaped block that can fit with the top of the inner ring wall of the flange. The miniature cylinder and its corresponding laser rangefinder are connected by an electrical signal.

[0011] Preferably, the sliding rod has a piston chamber, and the support block is slidably installed in the piston chamber through the piston rod and piston on its side wall. A spring is provided between the piston and the inner side wall of the piston chamber. The base has multiple sets of hydraulic chambers, and the hydraulic chambers are connected to the piston chambers through connecting pipes. Both the hydraulic chambers and the piston chambers are filled with hydraulic oil. Each hydraulic chamber is equipped with a hydraulic sensor and an oil pump, and the hydraulic sensor and the oil pump are connected by an electrical signal.

[0012] Preferably, the support block is equipped with a high-frequency vibration motor.

[0013] Preferably, the pressure plate is equipped with a displacement sensor, and the displacement sensor is connected to the reduction motor via an electrical signal.

[0014] Preferably, heat dissipation grilles are provided on the bottom surface of the cavity and the outer wall of the drive gear.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: I. This invention provides auxiliary geometric center positioning for flanges by synchronously extending multiple sets of support blocks radially, reducing the difficulty of positioning irregular flanges. Furthermore, by applying an auxiliary support force opposite to that of the pressure plate to the top reinforcing ribs of the inner ring wall of the flange through the pad assembly, it can reduce the elastic deformation of the flange under local load pressure. This makes the positioning of the worktable as the processing reference more accurate while improving the processing accuracy during drilling. Without interfering with the sealing surface reference, it corrects the bending deformation caused by the pressure plate with the most effective lever arm.

[0016] Second, this invention, through the cooperation of a miniature cylinder, a wedge block, and a laser rangefinder, enables the laser rangefinder to detect when the inner ring wall of the flange is deformed due to the clamping force. This allows the wedge block to cleverly decompose the horizontal thrust of the miniature cylinder into axial and radial components. The axial component is then used to directly counteract the local uplift caused by the pressure plate, effectively restoring the fit between the sealing surface and the worktable and ensuring the absolute reliability of the processing reference.

[0017] Third, this invention achieves a transition from auxiliary positioning to flexible holding of irregular flanges through an adaptive support structure that links hydraulics and springs. Specifically, by utilizing the compressibility and fluidity of hydraulic oil, combined with the precise injection and discharge of the oil pump, multiple sets of support blocks can automatically conform to the longest and shortest diameters of the non-circular inner ring, quickly determining the geometric center and simplifying the centering process of irregular workpieces. After positioning, the system switches to flexible spring support by pumping oil, which retains appropriate radial constraints to suppress processing torque and vibration while significantly reducing radial load interference that may be caused by rigid support. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side cross-sectional view of the present invention; Figure 3 In this invention Figure 2 Isometric cross-section; Figure 4 This is a three-dimensional structural diagram of the auxiliary positioning component of the present invention; Figure 5 This is an isometric cross-sectional view of the auxiliary positioning component of the present invention; Figure 6 This is a partial exploded view of the auxiliary positioning component of the present invention; Figure 7 This is a simplified view of the forces acting along the flange diameter line in this invention; Figure 8 This is a simplified view of the forces acting on the outer edge of the flange in this invention.

[0019] In the diagram: 1. Base; 2. Workbench; 3. Pressure plate; 4. Limiting block; 5. Slider; 6. Drive gear; 7. Cavity; 8. Rotating shaft; 9. Fixed sleeve; 10. Miniature cylinder; 11. Worm gear; 12. Worm; 13. Support block; 14. Wedge block; 15. Sliding rod; 16. Rotating disk; 17. Connecting pipe; 18. Hydraulic sensor; 19. Rotating cavity; 20. Piston. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1 to 8 The present invention provides a technical solution: a drilling device for producing irregular wind power flanges, comprising a milling machine body consisting of a bed, a spindle, a two-dimensional moving platform, and a lifting platform. The output end of the two-dimensional moving platform is fixedly mounted with a base 1 via a saddle. A worktable 2 is rotatably mounted on the top of the base 1. The surface of the worktable 2 is provided with multiple sets of dovetail grooves arranged in a ring symmetrical distribution. A pressure plate 3 is slidably installed in each dovetail groove. An auxiliary centering component is provided above the base 1. The auxiliary centering component is provided with multiple sets of support blocks 13 that can fit against the inner ring wall of the flange. Multiple sets of laser rangefinders are provided on the top of each support block 13. The aforementioned drilling device for producing irregularly shaped wind turbine flanges also includes a drive assembly, which is used to drive the worktable 2 to rotate for adjustment or locking. The aforementioned drilling device for producing irregular-shaped wind turbine flanges also includes a pad assembly, which can provide auxiliary support for the flange at the top of the inner ring wall based on the distance between the support block 13 and the top of the inner ring wall of the flange.

[0022] When this device is in operation, the flange to be processed is first placed on the workbench 2. Then, the auxiliary centering assembly is activated, and the support block 13 extends radially synchronously, adhering to the inner ring wall of the flange. Assisted calibration positions the geometric center of the flange. Subsequently, the flange is axially positioned by sliding and locking the pressure plate 3 along the dovetail groove. At this time, under the local concentrated force of the pressure plate 3, the flange warps at its bottom outer edge. The warping reaches its maximum at the midpoint between every two adjacent pressure plates 3, causing the sealing surface of the flange bottom to partially detach from the workbench 2. Simultaneously, the top of the inner ring wall of the flange warps upward along the diameter line of the pressure plate 3, while the bottom tends to warp downward (e.g., ...). Figure 7 and Figure 8As shown in the figure, not only does it cause deviation in the machining reference between the flange and the worktable 2, but it also affects the drilling accuracy due to the local deformation of the flange. When the laser rangefinder detects a change in the distance between the support block 13 and the top reinforcing rib of the flange, it provides real-time feedback on the distance deviation at each point. Based on this, the system provides auxiliary support to the flange at the top of the inner ring wall through the pad assembly according to the distance measurement data. By applying a reverse force, it eliminates the suspended deformation and improves the fit between the flange sealing surface and the worktable 2. Then, it drives multiple sets of support blocks 13 to retract centripetally away from the inner ring wall of the flange, and the drilling process can then begin through the main structure of the milling machine.

[0023] In this way, by having multiple sets of support blocks 13 extend radially synchronously to provide auxiliary geometric center positioning for the flange, the positioning difficulty of irregular flanges is reduced. Furthermore, by applying an auxiliary support force opposite to that of the pressure plate 3 to the top reinforcing ribs of the flange's inner ring wall through the pad assembly, the elastic deformation of the flange under localized load pressure can be reduced. This makes the positioning of the worktable 2 as the machining reference more accurate while improving the machining accuracy during drilling. Without interfering with the sealing surface reference, the bending deformation caused by the pressure plate 3 is corrected with the most effective lever arm. Since the drilling feed direction is axial and perpendicular to the radial support provided by the support blocks 13, to avoid the flange jumping during machining due to two mutually perpendicular loads, which could cause deformation of the flange's inner ring, the radial load provided by the support blocks 13 is removed after the flange positioning is completed. Only the axial load applied to the flange by the pressure plate 3, which is in the same direction as the feed, is retained.

[0024] Furthermore, the auxiliary centering component includes a fixed sleeve 9 fixedly installed on the top surface of the base 1. The fixed sleeve 9 has a rotating cavity 19 inside, and a rotating disk 16 that can be rotated and adjusted is provided in the rotating cavity 19. Multiple sets of sliding grooves are provided on the rotating disk 16. Multiple sets of sliding rods 15 are slidably installed in the through grooves provided on the side wall of the fixed sleeve 9. The number of sliding rods 15 is the same as that of the pressure plate 3. Each sliding rod 15 has a sliding pin on its bottom surface that can slide along the sliding groove. The ends of each sliding rod 15 that are far apart from each other are fixedly connected to the support block 13.

[0025] The above embodiments provide a specific implementation of an auxiliary centering component. See details below. Figure 5 and Figure 6 When the external drive device drives the rotating disk 16 to rotate, the rotating disk 16 drives multiple sets of sliding rods 15 to synchronously retract or extend radially through the sliding groove on its outer wall, driving the support block 13 to fit against or move away from the inner wall of the flange, thereby completing the geometric center positioning of the flange by positioning the inner ring of the flange.

[0026] Furthermore, a cavity 7 is provided inside the base 1, and a reduction motor is provided inside the cavity 7. A worm gear 12 is rotatably mounted on the inner wall of the cavity 7 via a bearing seat. A rotating shaft 8 is rotatably mounted on the bottom surface of the cavity 7. A worm wheel 11 that can mesh with the worm gear 12 is fixedly mounted on the outer wall of the rotating shaft 8. One end of the rotating shaft 8 that passes through the fixed sleeve 9 is fixedly connected to the bottom surface of the rotating disk 16.

[0027] As can be seen from the above implementation method, when the geared motor drives the worm 12 to drive the worm wheel 11 and the rotating shaft 8 to rotate together, the rotating shaft 8 can drive the fixed sleeve 9 to rotate, thereby driving multiple sets of support blocks 13 to extend or retract radially. When the motor stops, the multiple sets of support blocks 13 can be locked by the self-locking between the worm wheel 11 and the worm 12, thus completing the auxiliary positioning of the flange.

[0028] Furthermore, the drive assembly includes a toothed groove formed in the inner ring wall of the base 1. A large geared motor is provided at the bottom of the base 1. A drive gear 6 is fixedly installed at the end of the main shaft of the large geared motor, and the drive gear 6 can mesh with the toothed groove in the inner ring wall of the base 1. Multiple sets of slots are provided at the top of the base 1. An L-shaped limit block 4 is rotatably installed in each slot. A limit groove is provided at the bottom of the limit block 4. A slider 5 is slidably installed in the limit groove. The slider 5 is fixedly connected to the end of the cylinder main shaft.

[0029] A specific implementation of the driver component is provided based on the above embodiments. See details below. Figure 3 A large geared motor can drive the drive gear 6 to rotate the base 1 along its axis for adjustment. After adjustment, the cylinder pushes the slider 5 and the limit block 4 to rotate and lock the worktable 2, thus achieving the purpose of driving the worktable 2 to rotate or lock.

[0030] Furthermore, the pad assembly includes multiple sets of miniature cylinders 10 fixedly installed on the outer wall of the fixed sleeve 9. The output shaft end of the miniature cylinder 10 is fixedly installed with a wedge block 14 that can fit with the top of the inner ring wall of the flange. The miniature cylinder 10 and its corresponding laser rangefinder are connected by electrical signals.

[0031] When the laser rangefinder detects that the top surface of the flange inner ring is warped, that is, the distance between the reinforcing rib on the top surface of the flange inner ring and the support block 13 changes (the inner ring wall on the same diameter line as the pressure plate 3 has the greatest deformation and the highest warping), the micro cylinder 10 receives a signal to apply an auxiliary support force to the reinforcing rib on the top surface of the flange inner ring. The horizontal load is decomposed into a radial force and an axial force through the wedge block 14. The axial force is used to apply a reverse force to reduce the local deformation of the flange caused by the pressure plate 3, while the radial force can provide a certain radial load to the flange without damaging the roundness of the flange inner ring to offset the influence of the drill bit torque on the flange during drilling and improve the positioning accuracy of the flange.

[0032] In this way, through the cooperation between the miniature cylinder 10, the wedge block 14, and the laser rangefinder, when the laser rangefinder detects a specific deformation of the inner ring wall of the flange due to the clamping force, it can drive the wedge block 14 to cleverly decompose the horizontal thrust of the miniature cylinder 10 into axial and radial components. The axial component directly offsets the local uplift caused by the pressure plate 3, effectively restoring the fit between the sealing surface and the worktable 2, ensuring the absolute reliability of the processing datum. The radial component, even after the support retracts, can still provide appropriate inner ring constraint, actively offsetting the circumferential torque and vibration generated by the drill bit during drilling, significantly enhancing the overall rigidity of the flange during processing. While eliminating deformation and maintaining datum accuracy, it further improves the verticality and hole position accuracy of the drilling, ensuring high-quality processing of irregularly shaped wind turbine flanges under complex stress.

[0033] Furthermore, a piston chamber is provided inside the sliding rod 15, and the support block 13 is slidably installed in the piston chamber through the piston rod and piston 20 on its side wall. A spring is provided between the piston 20 and the inner side wall of the piston chamber. Multiple hydraulic chambers are provided inside the base 1. The hydraulic chambers and piston chambers are connected by a connecting pipe 17. Both the hydraulic chambers and piston chambers are filled with hydraulic oil. Each hydraulic chamber is equipped with a hydraulic sensor 18 and an oil pump. The hydraulic sensor 18 and the oil pump are connected by an electrical signal.

[0034] As can be seen from the above implementation method, since the inner ring of the irregular flange is not necessarily a circular ring surface, it can be any centrally symmetrical ring surface. When the two sets of opposing sliding rods 15 and support blocks 13 contact the inner wall of the shortest diameter of the irregular ring surface, oil can be injected into other piston chambers by the oil pump until the support blocks 13 complete the positioning of the longest diameter of the ring surface, thus completing the positioning of the geometric center of the irregular ring surface and completing the auxiliary positioning of the flange. At this time, the radial support of the support blocks 13 on the flange is a rigid auxiliary support. After the pressure plate 3 completes the positioning of the flange, oil can be pumped in. A certain amount of hydraulic oil is supplied to transform the radial rigid auxiliary support of the support block 13 to the flange into a flexible auxiliary support provided by the spring. This reduces the radial support of the support block 13 to the flange, avoids excessive radial runout during processing, and provides a counteracting effect on the circumferential torque and vibration generated by the drill bit during drilling. At the same time, the hydraulic sensor 18 monitors the pressure in the piston chamber, monitors the deformation of the flange during processing in real time, and avoids large deformation of the inner ring wall of the flange due to material or feed speed, thereby further improving the processing accuracy of the flange.

[0035] In this way, the adaptive support structure of hydraulic and spring linkage realizes the transition from auxiliary positioning to flexible holding of irregular flanges. That is, by utilizing the compressibility and fluidity of hydraulic oil, combined with the precise injection and discharge of oil pump, multiple sets of support blocks 13 can automatically fit the longest and shortest diameters of the non-circular inner ring, quickly determine the geometric center, simplify the centering process of irregular workpieces, and after positioning, switch to spring flexible support by pumping oil. While retaining appropriate radial constraint to suppress processing torque and vibration, it significantly reduces the radial load interference that may be caused by rigid support, effectively avoids the tendency of runout during processing, and continuously monitors the pressure change in the cavity through hydraulic sensor 18, providing real-time feedback on the micro deformation of the flange during drilling, providing key data support for process parameter optimization or anomaly early warning.

[0036] Furthermore, a high-frequency vibration motor is installed inside the support block 13.

[0037] As can be seen from the above implementation method, since there is residual stress in the large forging blank, the stress rebalancing after rough machining will cause the workpiece to deform. Therefore, before the final finishing, a periodic, small-amplitude alternating radial load is applied to the inner hole of the flange by a rounding mechanism, and the workpiece is gently tapped by high-frequency excitation to accelerate the relaxation and homogenization of the internal residual stress.

[0038] Furthermore, a displacement sensor is provided inside the pressure plate 3, and the displacement sensor is connected to the reduction motor via an electrical signal.

[0039] As can be seen from the above implementation method, the deformation convergence of the flange surface during the stress release process is monitored by the displacement sensor installed on the pressure plate 3, and the deformation recovery of the flange is detected after the pad assembly completes the suspension support of the inner ring of the flange.

[0040] Furthermore, heat dissipation grilles are provided on the bottom surface of cavity 7 and the outer wall of drive gear 6.

[0041] The geared motor is provided with heat dissipation space by heat dissipation grilles opened on the bottom surface of cavity 7 and the outer wall of drive gear 6.

[0042] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the specification and drawings can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling device for producing irregularly shaped wind turbine flanges, comprising a milling machine body consisting of a bed, a spindle, a two-dimensional moving platform, and a lifting platform, characterized in that: The output end of the two-dimensional mobile platform is fixedly mounted with a base (1) via a saddle. A worktable (2) is rotatably mounted on the top of the base (1). The surface of the worktable (2) is provided with multiple sets of dovetail grooves arranged in a ring symmetrical distribution. A pressure plate (3) is slidably installed in each dovetail groove. An auxiliary centering assembly is provided above the base (1). The auxiliary centering assembly is provided with multiple sets of support blocks (13) that can fit against the inner ring wall of the flange. Multiple sets of laser rangefinders are provided on the top of each support block (13). It also includes a drive assembly for driving the worktable (2) to rotate for adjustment or locking; It also includes a pad assembly that can provide auxiliary support for the flange at the top of the inner ring wall based on the distance between the support block (13) and the top of the inner ring wall of the flange.

2. The drilling device for producing irregularly shaped wind turbine flanges according to claim 1, characterized in that: The auxiliary centering component includes a fixed sleeve (9) fixedly installed on the top surface of the base (1). A rotating cavity (19) is provided inside the fixed sleeve (9). A rotating disk (16) that can be rotated and adjusted is provided inside the rotating cavity (19). Multiple sets of sliding grooves are provided on the rotating disk (16). Multiple sets of sliding rods (15) are slidably installed in the through grooves provided on the side wall of the fixed sleeve (9). The number of sliding rods (15) is the same as that of the pressure plate (3). Each sliding rod (15) has a sliding pin on its bottom surface that can slide along the sliding groove. The ends of each sliding rod (15) that are far apart from each other are fixedly connected to the support block (13).

3. The drilling device for producing irregularly shaped wind turbine flanges according to claim 2, characterized in that: The base (1) has a cavity (7) inside, and a speed reduction motor is installed inside the cavity (7). A worm (12) is rotatably installed on the inner wall of the cavity (7) through a bearing seat. A rotating shaft (8) is rotatably installed on the bottom surface of the cavity (7). A worm wheel (11) that can mesh with the worm (12) is fixedly installed on the outer wall of the rotating shaft (8). One end of the rotating shaft (8) that passes through the fixed sleeve (9) is fixedly connected to the bottom surface of the rotating disk (16).

4. The drilling device for producing irregularly shaped wind turbine flanges according to claim 3, characterized in that: The drive assembly includes a toothed groove formed on the inner ring wall of the base (1). A large geared motor is provided at the bottom of the base (1). A drive gear (6) is fixedly installed at the end of the main shaft of the large geared motor. The drive gear (6) can mesh with the toothed groove on the inner ring wall of the base (1). Multiple sets of slots are provided at the top of the base (1). An L-shaped limiting block (4) is rotatably installed in each slot. A limiting groove is provided at the bottom of the limiting block (4). A slider (5) is slidably installed in the limiting groove. The slider (5) is fixedly connected to the end of the cylinder main shaft.

5. The drilling device for producing irregularly shaped wind turbine flanges according to claim 2, characterized in that: The pad assembly includes multiple sets of miniature cylinders (10) fixedly installed on the outer wall of the fixed sleeve (9). The output shaft end of the miniature cylinder (10) is fixedly installed with a wedge block (14) that can fit with the top of the inner ring wall of the flange. The miniature cylinder (10) and its corresponding laser rangefinder are connected by electrical signals.

6. The drilling device for producing irregularly shaped wind turbine flanges according to claim 2, characterized in that: The sliding rod (15) has a piston chamber. The support block (13) is slidably installed in the piston chamber through the piston rod and piston (20) on its side wall. A spring is provided between the piston (20) and the inner side wall of the piston chamber. The base (1) has multiple hydraulic chambers. The hydraulic chambers and the piston chambers are connected by a connecting pipe (17). Both the hydraulic chambers and the piston chambers are filled with hydraulic oil. Each hydraulic chamber is equipped with a hydraulic sensor (18) and an oil pump. The hydraulic sensor (18) and the oil pump are connected by an electrical signal.

7. The drilling device for producing irregularly shaped wind turbine flanges according to any one of claims 1-6, characterized in that: The support block (13) is equipped with a high-frequency vibration motor.

8. The drilling device for producing irregularly shaped wind turbine flanges according to claim 7, characterized in that: The pressure plate (3) is equipped with a displacement sensor, and the displacement sensor is connected to the speed reduction motor via an electrical signal.

9. The drilling device for producing irregularly shaped wind turbine flanges according to claim 4, characterized in that: The bottom surface of the cavity (7) and the outer wall of the drive gear (6) are both provided with heat dissipation grilles.

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