A bearing retainer drilling device for bearing production and processing

Abstract

The application relates to the technical field of drilling devices, and discloses a bearing retainer drilling device for bearing production and machining, which comprises a drilling unit, the drilling unit is arranged above a cushion block, the drilling unit comprises an annular frame arranged above the cushion block, a plurality of drilling module groups are arranged in a ring shape on the annular frame; the drilling module group comprises a telescopic assembly, an adjusting assembly, a propelling assembly and a drill bit, the telescopic assembly is connected with the propelling assembly through the adjusting assembly, the propelling assembly is used for controlling the drill bit to move and drilling and machining the bearing retainer. The drilling device is provided with a plurality of drilling module groups, and the telescopic assembly, the adjusting assembly and the propelling assembly are integrated in each drilling module group, so that the device can adapt to various complex machining such as inclined drilling and vertical drilling of a conical retainer, and the stability and machining quality of the drilling process are ensured.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, and more specifically, to a drilling device for bearing cages used in bearing manufacturing. Background Technology

[0002] As a core component of bearings, the bearing cage's main function is to evenly separate the rolling elements inside the bearing, ensuring that the rolling elements maintain a stable posture and trajectory during movement, thereby improving the bearing's load-bearing capacity, rotational accuracy, and service life. Currently, the mainstream bearing cages on the market include various types such as cylindrical cages for conventional bearings, tapered cages for angular contact ball bearings, and bore-up cylindrical cages for roller bearings. Drilling is a critical process in bearing cage production; the accuracy of the hole positions and the consistency of the hole diameter directly affect the assembly accuracy of the rolling elements and the overall performance of the bearing. Therefore, extremely high requirements are placed on the processing stability and precision of the bearing cage drilling equipment.

[0003] However, existing bearing cage drilling devices generally suffer from poor versatility. Most devices are specifically designed for cages of a single shape or specification. When different types of cages need to be processed, the entire drilling module, clamping fixtures, and positioning components must be replaced. This not only increases equipment investment costs but also leads to excessively long production changeover times, severely restricting production efficiency.

[0004] On the other hand, existing drilling devices use a single drilling mechanism to process holes sequentially. During the drilling process, the positioning, feed and retraction processes need to be repeated, which directly extends the processing cycle and cannot meet the needs of mass production. Even if multiple mechanisms are used, if they rely on independent power sources, the rotation speed of each drill bit will be different, resulting in inconsistent hole diameters and uneven hole wall finish, which affects the uniformity of hole position accuracy. Summary of the Invention

[0005] This invention provides a bearing cage drilling device for bearing production and processing, which solves the technical problems of existing bearing cage drilling devices being of a single form or specification design, requiring the replacement of the entire component when changing models, increasing costs and limiting efficiency, as well as the difficulty in achieving both processing efficiency and precision consistency.

[0006] This invention provides a bearing cage drilling device for bearing manufacturing and processing, comprising: The device body includes a cabinet, a drive frame is mounted on the cabinet, and a clamping seat is provided on the drive frame. A conical clamping block is provided at one end of the clamping seat near the cabinet, and a processing table is provided below the conical clamping block. The processing table is fixedly connected to the cabinet, and a pad is mounted on the processing table for placing a bearing retainer. A drilling unit is disposed above the pad block. The drilling unit includes an annular frame disposed above the pad block, on which multiple drilling modules are arranged in a ring. Each drilling module includes a telescopic component, an adjusting component, a propulsion component, and a drill bit. The telescopic component is connected to the propulsion component through the adjusting component. The propulsion component is used to control the movement of the drill bit to perform drilling on the bearing cage.

[0007] As a further optimization of the present invention, a limiting block is provided on the pad, and a limiting ring is provided outside the limiting block. The pad, the limiting block and the limiting ring are on the same center line, and an annular placement groove is formed between the limiting block and the limiting ring for limiting the bearing cage.

[0008] As a further optimization of the present invention, the telescopic component includes multiple sleeves assembled in a ring on a ring frame. A movable frame is slidably connected inside the sleeve, and a first bushing is rotatably connected inside the movable frame via a bearing. A first splined shaft is provided inside the first bushing, and the first splined shaft is connected to the sleeve by a bearing.

[0009] As a further optimization of the present invention, a first cylinder is installed on the sleeve, and the telescopic end of the first cylinder is fixedly connected to the movable frame.

[0010] As a further optimization of the present invention, the adjustment assembly includes connecting frames symmetrically installed at the ends of the movable frame. The internal bearings of the connecting frames are connected to a rotating shaft. A second cylinder is installed on one set of the connecting frames, and a rack plate is installed on the telescopic end of the second cylinder. An adjusting gear is meshed on the rack plate, and the adjusting gear is fixedly connected to the rotating shaft.

[0011] As a further optimization of the present invention, the propulsion assembly includes a fixed frame disposed between the connecting frames. The fixed frame is fixedly connected to the rotating shaft. A third bushing is rotatably connected inside the fixed frame via a bearing. A third spline shaft is disposed inside the third bushing. A mounting seat is installed at the end of the third spline shaft away from the third bushing, and the mounting seat is assembled and connected to the drill bit.

[0012] As a further optimization of the present invention, a third cylinder is installed on the fixing frame, and a connecting plate is installed on the telescopic end of the third cylinder. The connecting plate is rotatably connected to the outside of the mounting base through a bearing.

[0013] As a further optimization of the present invention, a second bushing and a second spline shaft are provided between the first bushing and the third bushing, the third bushing and the second bushing are connected by a first universal joint, and the first bushing and the second spline shaft are connected by a second universal joint.

[0014] As a further optimization of the present invention, hydraulic cylinders are installed on both sides of the processing table, and the telescopic ends of the hydraulic cylinders are fixedly connected to the ring frame; when the hydraulic cylinders are controlled to telescopically move, the ring frame drives the drilling module to move synchronously, thereby facilitating the adjustment of the drilling processing height.

[0015] As a further optimization of the present invention, the ring frame is connected to an end gear via a bearing, and the end gear is meshed with a transmission gear adapted to the number of drilling modules. The transmission gear is fixedly connected to the first spline shaft. A motor is also installed on the ring frame, and a drive gear is installed on the output shaft of the motor. A driven gear is meshed with the drive gear, and the driven gear is installed outside the end gear. When the motor is driven to rotate, the end gear is controlled to rotate through the meshing connection of the drive gear and the driven gear. At the same time, the first spline shaft is driven to rotate synchronously through the meshing connection of the end gear and the transmission gear.

[0016] The beneficial effects of this invention are as follows: The drilling device of this invention, by setting up multiple drilling modules, and integrating a telescopic component, an adjusting component, and a propulsion component in each drilling module, enables the device to flexibly adapt to bearing cages of different diameters and drilling requirements of different shapes. The telescopic component can adjust the radial position of the drill bit to adapt to cages of different diameters, while the adjusting component can precisely control the tilt angle of the drill bit, thereby realizing the switching of multiple processing modes such as conventional drilling, tilt drilling, and vertical drilling, greatly improving the versatility and processing flexibility of the equipment. This allows the device to adapt to various complex processing such as tilt drilling and vertical drilling of tapered cages, ensuring the stability of the drilling process and processing quality. Furthermore, the spline connection and universal joint configuration ensure the continuity and stability of power transmission during radial telescopic and angle adjustment of the drill bit, avoiding power interruption or speed fluctuation, and keeping the rotational speed and propulsion force of each drill bit consistent, effectively ensuring the uniformity of hole dimensions in mass production. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the drilling unit of the present invention; Figure 4 This is a three-dimensional structural diagram of the pad, limiting block, and limiting ring of the present invention; Figure 5 This is a three-dimensional structural diagram of the second form of the cage in the processing state of the present invention; Figure 6 This is a three-dimensional structural diagram of the third form of the cage of the present invention in the processing state; Figure 7 This is a three-dimensional structural diagram of the drilling module of the present invention; Figure 8 This is a three-dimensional cross-sectional view of the drilling module of the present invention; Figure 9 This is a partial three-dimensional structural diagram of the drilling module of the present invention; Figure 10 This is a three-dimensional structural diagram of the partially exploded telescopic component of the present invention; Figure 11 This is a partial three-dimensional structural diagram of the adjustment component of the present invention; Figure 12 This is a schematic diagram of the partially exploded three-dimensional structure of the recommended component of the present invention.

[0018] In the diagram: 100, Device body; 110, Cabinet; 120, Drive frame; 130, Clamping seat; 140, Conical clamping block; 150, Machining table; 160, Pad block; 170, Limiting block; 180, Limiting ring; 200, Drilling unit; 210, Ring frame; 220, Drilling module; 221, Telescopic assembly; 2211, Sleeve; 2212, Movable frame; 2213, First bushing; 2214, First splined shaft; 2215, First cylinder; 222, Adjustment assembly; 2221, Connecting frame; 2222, Rotating shaft; 2223, Adjusting gear; 2224, Rack plate; 2225 2226. Second cylinder; 2227. First universal joint; 2228. Second universal joint; 2229. Second bushing; 2220. Second splined shaft; 223. Propulsion assembly; 2231. Fixing bracket; 2232. Third bushing; 2233. Third splined shaft; 2234. Mounting base; 2235. Third cylinder; 2236. Connecting plate; 224. Drill bit; 230. Hydraulic cylinder; 240. End gear; 250. Transmission gear; 260. Motor; 270. Drive gear; 280. Driven gear ring; 300. First form retainer; 400. Second form retainer; 500. Third form retainer. Detailed Implementation

[0019] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0020] According to the appendix Figure 1 and attached Figure 2As shown, this invention provides a bearing cage drilling device for bearing manufacturing and processing. Its main function is to achieve efficient and precise drilling of bearing cages of different shapes and diameters. The device includes a main body 100 and a drilling unit 200. The main body 100 includes a cabinet 110, on which a drive frame 120 is mounted. A clamping seat 130 is provided on the drive frame 120. A conical clamping block 140 is provided at one end of the clamping seat 130 near the cabinet 110. This conical clamping block 140 can be used to assist in positioning and clamping the workpiece. A processing table 150 is provided below the conical clamping block 140, and the processing table 150 is fixedly connected to the cabinet 110. A pad 160 is installed on the processing table 150, which is specifically used to place the bearing cage to be processed.

[0021] To further improve the positioning accuracy and machining stability of the bearing cage, according to the attached... Figure 4 As shown, a limiting block 170 is provided on the pad 160, and a limiting ring 180 is provided on the outside of the limiting block 170. The pad 160, the limiting block 170 and the limiting ring 180 are all on the same center line, and an annular placement groove is formed between the limiting block 170 and the limiting ring 180. This annular placement groove is used to precisely limit the bearing cage to ensure that it will not shift during the processing.

[0022] According to the appendix Figure 2 and attached Figure 3 As shown, the drilling unit 200 is positioned above the pad 160 and is the core component for drilling. The drilling unit 200 includes an annular frame 210 positioned above the pad 160. The annular frame 210 has an annular structure, on which multiple sets of drilling modules 220 are evenly arranged in a ring. This annular arrangement allows for simultaneous processing of multiple holes, thereby improving processing efficiency.

[0023] According to the appendix Figure 7 and attached Figure 8 As shown, each drilling module 220 is an independent drilling execution unit, which includes a telescopic component 221, an adjusting component 222, a propulsion component 223, and a drill bit 224. The telescopic component 221 is connected to the propulsion component 223 through the adjusting component 222, realizing the mechanical linkage and functional coordination between the three components. The propulsion component 223 is specifically used to control the drill bit 224 to move axially, thereby completing the drilling of the bearing cage. This structure solves the drilling problem of cages of different shapes and improves versatility.

[0024] Specifically, according to the appendix Figure 7 Appendix Figure 9 and attached Figure 10As shown, the telescopic assembly 221 includes multiple sets of sleeves 2211 arranged in a ring on the ring frame 210. Each sleeve 2211 has a movable frame 2212 slidably connected inside. The movable frame 2212 can move radially inside the sleeve 2211. The movable frame 2212 is rotatably connected to a first bushing 2213 through a bearing, so that the first bushing 2213 can rotate freely inside the movable frame 2212. The first bushing 2213 has a first spline shaft 2214 inside, and the first spline shaft 2214 is connected to the sleeve 2211 through a bearing to ensure smooth rotation of the spline shaft.

[0025] It should be noted that the assembly connection between the ring frame 210 and the sleeve 2211 can be a bolt connection. Through the bolt connection, the number and angle position of the drilling module 220 can be selected during actual processing and production, which improves processing flexibility.

[0026] In order to realize the telescopic movement of the movable frame 2212, a first cylinder 2215 is installed on the sleeve 2211, and the telescopic end of the first cylinder 2215 is fixedly connected to the movable frame 2212. The telescopic movement of the cylinder can directly drive the movable frame 2212 to slide inside the sleeve 2211, thereby adjusting the radial position of the drill bit 224 to adapt to bearing cages of different diameters.

[0027] Furthermore, the first bushing 2213 has a first spline groove inside, and the first spline groove and the first spline shaft 2214 are slidably connected. The spline connection ensures the transmission of rotational power on the one hand, and allows the first spline shaft 2214 to slide axially inside the first bushing 2213 on the other hand, thus taking into account both rotation and telescopic functions.

[0028] Specifically, according to the appendix Figure 7 and attached Figure 9 As shown, the adjustment assembly 222 is used to adjust the tilt angle of the drill bit 224. It includes connecting frames 2221 symmetrically mounted at the ends of the movable frame 2212. A rotating shaft 2222 is connected to the internal bearing of the connecting frame 2221, allowing the rotating shaft 2222 to rotate within the connecting frame 2221. A second cylinder 2225 is mounted on one set of connecting frames 2221, and a rack plate 2224 is mounted on the telescopic end of the second cylinder 2225. An adjusting gear 2223 is meshed on the rack plate 2224, and the adjusting gear 2223 is fixedly connected to the rotating shaft 2222.

[0029] It is important to understand that when the second cylinder 2225 extends or retracts, it drives the rack plate 2224 to move linearly. The rack plate 2224 meshes with the adjusting gear 2223, causing the adjusting gear 2223 and the rotating shaft 2222 to rotate. Since the subsequent propulsion assembly 223 and the drill bit 224 are fixedly connected to the rotating shaft 2222, the rotation of the rotating shaft 2222 will change the tilt angle of the drill bit 224.

[0030] Specifically, according to the appendix Figure 7 Appendix Figure 9 and attached Figure 12 As shown, the propulsion assembly 223 is used to control the drill bit 224 to perform linear drilling. It includes a fixed frame 2231 disposed between the connecting frames 2221. The fixed frame 2231 is fixedly connected to the rotating shaft 2222, ensuring the structural stability of the drill bit 224 after angle adjustment. A third bushing 2232 is rotatably connected to the inside of the fixed frame 2231 via bearings. A third splined shaft 2233 is disposed inside the third bushing 2232. A mounting base 2234 is installed at the end of the third splined shaft 2233 away from the third bushing 2232, and the drill bit 224 is assembled and connected to the mounting base 2234. The assembly connection can be a common drill bit 224 connection method, or it can be a plug-in connection, a threaded fixing with bolts, or other connection methods.

[0031] It should be noted that, in order to achieve the advancing movement of the drill bit 224, a third spline groove is provided inside the third bushing 2232, and the third spline groove is slidably connected to the third spline shaft 2233. A third cylinder 2235 is mounted on the fixing bracket 2231, and a connecting plate 2236 is mounted on the telescopic end of the third cylinder 2235. The connecting plate 2236 is rotatably connected to the outside of the mounting base 2234 via bearings. When the third cylinder 2235 extends or retracts, the connecting plate 2236 will drive the mounting base 2234 and the drill bit 224 to advance or retract linearly along the spline shaft, thereby realizing drilling or retraction.

[0032] Furthermore, according to the appendix Figure 11 As shown, in order to maintain the rotational power transmission of the drill bit 224 during extension, adjustment and advance, a second bushing 2228 and a second spline shaft 2229 are provided between the first bushing 2213 and the third bushing 2232.

[0033] The third bushing 2232 is connected to the second bushing 2228 via a first universal joint 2226, while the first bushing 2213 is connected to the second splined shaft 2229 via a second universal joint 2227. The second bushing 2228 has a second spline groove inside, and the second spline groove is slidably connected to the second splined shaft 2229. Furthermore, a spring is provided between the second spline groove and the second splined shaft 2229, with one end of the spring fixedly connected to the second spline groove and the other end fixedly connected to the second splined shaft 2229.

[0034] This connection method ensures that when the drill bit 224 is extended, retracted, angled, and advanced, the rotational power input from the first spline shaft 2214 can be smoothly transmitted to the third spline shaft 2233 and the drill bit 224 through the first bushing 2213, the second universal joint 2227, the second spline shaft 2229, the second bushing 2228, the first universal joint 2226, and the third bushing 2232, thereby achieving continuous rotation of the drill bit 224.

[0035] It should be noted that the spring configuration eliminates transmission backlash, ensuring tightness and smoothness of transmission. The first universal joint 2226 and the second universal joint 2227 ensure that rotational power continues to be transmitted smoothly when the rotating shaft 2222 rotates, i.e., when adjusting the angle of the drill bit 224, while compensating for shaft misalignment and angle changes.

[0036] To accommodate bearing cages of different heights, according to the attached... Figure 2 and attached Figure 3 As shown, hydraulic cylinders 230 are installed on both sides of the processing table 150, and the telescopic ends of the hydraulic cylinders 230 are fixedly connected to the ring frame 210. When the hydraulic cylinders 230 are controlled to telescopically move, the entire ring frame 210, together with the drilling module 220 on it, will move vertically synchronously, thereby facilitating the adjustment of the drilling height. This makes the equipment more adaptable to bearing cages of different sizes, eliminating the need for frequent tooling changes or complex height adjustments.

[0037] In addition, according to the appendix Figure 3 As shown, the ring frame 210 is connected to an end gear 240 by a bearing, and the end gear 240 is meshed with a transmission gear 250 that matches the number of drilling modules 220. The transmission gear 250 is fixedly connected to the first spline shaft 2214. The ring frame 210 is also equipped with a motor 260, and the output shaft of the motor 260 is equipped with a drive gear 270. The drive gear 270 is meshed with a driven gear ring 280, and the driven gear ring 280 is installed outside the end gear 240.

[0038] It should be noted that when the drive motor 260 rotates, the end gear 240 can be controlled to rotate through the meshing connection of the drive gear 270 and the driven gear ring 280. At the same time, since the end gear 240 is meshed with the transmission gear 250 of each drilling module 220, it can drive all the first spline shafts 2214 to rotate synchronously. This power transmission method ensures that all drill bits 224 can rotate synchronously during the processing, improving the consistency and efficiency of drilling.

[0039] Furthermore, according to the appendix Figure 2 Appendix Figure 5 and attached Figure 6 As shown, the device of the present invention can adapt to various types of bearing cages. Commonly used bearing cages have various forms, including a first-form cage 300, a second-form cage 400, and a third-form cage 500.

[0040] Specifically, the first type of cage 300 is commonly used for ball restraint in conventional bearings, and its ring body is set as a conventional cylindrical body. When drilling, the hole is drilled from the outer periphery inward. The second type of cage 400 is commonly used for ball restraint in angular contact ball bearings, and its ring body is set as a cone. When drilling, the hole is drilled from the inclined surface of the outer periphery inward. The third type of cage 500 is commonly used for roller restraint in roller bearings, and its ring body is also a conventional cylindrical body. When drilling, the hole is drilled from top to bottom.

[0041] To adapt to these different processing requirements, according to the appendix Figure 5 To be continued Figure 8 As shown, the drilling module 220 has two working modes: initial state and angle adjustment state.

[0042] In its initial state, drill bit 224 can perform conventional drilling from the outer periphery to the inner part of the first-shaped retainer 300. At this time, the adjustment assembly 222 does not require angle adjustment, and drill bit 224 remains horizontal or at a preset conventional drilling angle. The telescopic assembly 221 adjusts the radial position of drill bit 224 via the first cylinder 2215 to accommodate first-shaped retainers 300 of different diameters. The propulsion assembly 223 controls the radial propulsion drilling of drill bit 224 via the third cylinder 2235.

[0043] In the angle adjustment state, the adjustment component 222 drives the rack plate 2224 and the adjustment gear 2223 through the second cylinder 2225, causing the rotating shaft 2222 to rotate. This allows the drill bit 224 to be adjusted to a certain tilt angle to precisely fit the tapered ring of the second-form retainer 400 for tilt drilling. The telescopic component 221 can also adjust its radial position according to the size of the retainer.

[0044] Simultaneously, when in angle adjustment mode, adjustment component 222 can also adjust drill bit 224 to a vertical position, allowing drill bit 224 to drill into the third-mode retainer 500 from top to bottom. Telescopic component 221 is also used to adjust the radial position of drill bit 224 to fit the size of the retainer, while advance component 223 controls drill bit 224 to advance in the vertical direction.

[0045] In summary, the telescopic assembly 221 is mainly used to control the radial telescopic movement of the drill bit 224, thereby adjusting the center position of the drill bit 224 relative to the bearing cage so as to adapt to bearing cages of different diameters.

[0046] The embodiments of this specific implementation have been described above. However, this embodiment is not limited to the specific implementation described above. The specific implementation described above is merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this embodiment, all of which are within the protection scope of this embodiment.

Claims

1. A bearing cage drilling device for bearing manufacturing and processing, characterized in that, include: The device body includes a processing table, on which a pad is mounted for placing a bearing cage. A drilling unit is disposed above the pad block. The drilling unit includes an annular frame disposed above the pad block, and multiple drilling modules are arranged in a ring on the annular frame. The drilling module includes a telescopic component, an adjusting component, a propulsion component, and a drill bit. The telescopic component is connected to the propulsion component through the adjusting component. The propulsion component is used to control the movement of the drill bit to perform drilling on the bearing cage. The telescopic assembly includes multiple sleeves assembled in a ring on a ring frame. A movable frame is slidably connected inside the sleeve, and a first bushing is rotatably connected inside the movable frame via a bearing. A first splined shaft is provided inside the first bushing, and the first splined shaft is connected to the sleeve by a bearing. The adjustment assembly includes connecting frames symmetrically installed at the ends of the movable frame. The internal bearings of the connecting frames are connected to a rotating shaft. A second cylinder is installed on one set of the connecting frames, and a rack plate is installed on the telescopic end of the second cylinder. An adjusting gear is meshed on the rack plate, and the adjusting gear is fixedly connected to the rotating shaft. The propulsion assembly includes a fixed frame disposed between the connecting frames. The fixed frame is fixedly connected to the rotating shaft. A third bushing is rotatably connected inside the fixed frame via a bearing. A third spline shaft is disposed inside the third bushing. A mounting seat is installed at the end of the third spline shaft away from the third bushing, and the mounting seat is assembled and connected to the drill bit. A third cylinder is mounted on the fixed frame, and a connecting plate is mounted on the telescopic end of the third cylinder. The connecting plate is rotatably connected to the outside of the mounting base via a bearing. A second bushing and a second splined shaft are provided between the first bushing and the third bushing. The third bushing and the second bushing are connected by a first universal joint, and the first bushing and the second splined shaft are connected by a second universal joint.

2. The bearing cage drilling device for bearing manufacturing and processing according to claim 1, characterized in that, The pad is provided with a limiting block, and a limiting ring is provided outside the limiting block. The pad, the limiting block and the limiting ring are on the same center line. An annular placement groove is formed between the limiting block and the limiting ring for limiting the bearing cage.

3. The bearing cage drilling device for bearing manufacturing and processing according to claim 1, characterized in that, The sleeve is equipped with a first cylinder, and the telescopic end of the first cylinder is fixedly connected to the movable frame.

4. The bearing cage drilling device for bearing manufacturing and processing according to claim 1, characterized in that, Hydraulic cylinders are installed on both sides of the processing table, and the telescopic ends of the hydraulic cylinders are fixedly connected to the ring frame. When the hydraulic cylinders are controlled to telescopically move, the ring frame drives the drilling module to move synchronously, thereby facilitating the adjustment of the drilling processing height.

5. The bearing cage drilling device for bearing manufacturing and processing according to claim 4, characterized in that, The ring frame is connected to an end gear via a bearing, and the end gear is meshed with a transmission gear that matches the number of drilling modules. The transmission gear is fixedly connected to the first splined shaft. A motor is also mounted on the ring frame, and a drive gear is mounted on the output shaft of the motor. A driven gear is meshed with the drive gear, and the driven gear is mounted outside the end gear. When the motor is driven to rotate, the end gear is controlled to rotate through the meshing connection of the drive gear and the driven gear. At the same time, the first splined shaft is driven to rotate synchronously through the meshing connection of the end gear and the transmission gear.

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