Magnetic part drilling device

Abstract

The utility model relates to the technical field of magnet machining, in particular to a magnetic part drilling device which comprises a machine frame, a driving motor, a main shaft mechanism and a cutter mechanism, the driving motor, the main shaft mechanism and the cutter mechanism are arranged on the machine frame, the main shaft mechanism is used for clamping an external magnetic part, and the cutter mechanism is used for drilling holes in the magnetic part. The main shaft mechanism comprises a shaft sleeve, a clamp, a pull rod and a tensioning assembly, the shaft sleeve is rotationally installed on the rack, and the driving motor is in driving connection with the shaft sleeve; one end of the pull rod is connected with the clamp, and the other end of the pull rod is connected with the tensioning assembly; the clamp is provided with a clamping part which expands and stretches out and draws back and is also used for clamping a magnetic piece, the tensioning assembly is installed on the shaft sleeve and drives the pull rod to slide relative to the shaft sleeve, and the shaft sleeve abuts against the outer side of the clamping part to enable the clamping part to clamp the magnetic piece. The tensioning assembly drives the pull rod to drive the clamp to slide relative to the shaft sleeve, so that the clamp expands and stretches out and draws back to quickly and stably clamp an external magnetic part, the clamping speed of the magnetic part is increased, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of magnet processing technology, and in particular discloses a drilling device for magnetic components. Background Technology

[0002] Neodymium iron boron permanent magnets are magnets that can maintain their magnetism for a long time. Permanent magnets are hard magnets that are not easy to lose magnetism or be magnetized. When using them, permanent magnets are often cut into the required shape and size. Sometimes, holes are also made in the permanent magnets to facilitate use, so a drilling device is used.

[0003] The existing processing method is manual processing. When the drilling device is drilling, the clamping of the permanent magnet often requires manual turning of the handle. Manual clamping is time-consuming and labor-intensive, which reduces the efficiency of drilling NdFeB permanent magnets. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a magnetic component drilling mechanism that improves clamping speed and production efficiency.

[0005] To achieve the above objectives, this utility model provides a magnetic component drilling device, comprising a frame and a drive motor, a spindle mechanism, and a cutting tool mechanism mounted on the frame. The spindle mechanism is used to clamp external magnetic components, and the cutting tool mechanism is used to drill holes in the magnetic components clamped by the spindle mechanism. The spindle mechanism includes a bushing, a clamp, a pull rod, and a tensioning assembly. The bushing is rotatably mounted on the frame and is a cylinder open at both ends. The drive motor drives and connects to the bushing. The clamp is movably disposed within the bushing. One end of the pull rod is connected to the clamp, and the other end is connected to the tensioning assembly. The clamp has an expansion and contraction mechanism for clamping the magnetic components. The tensioning assembly is mounted on the bushing and drives the pull rod to slide relative to the bushing. The bushing abuts against the outer side of the clamping part to clamp the magnetic components. This utility model, by using the tensioning assembly to drive the pull rod to slide the clamp relative to the bushing, allows the clamp to expand and contract, thereby quickly and stably clamping external magnetic components, increasing the clamping speed of magnetic components, and thus improving production efficiency.

[0006] Furthermore, the clamp includes a cylindrical connecting part and a conical clamping part. The connecting part is fixedly connected to the pull rod. The clamping part is provided with multiple clamping cones arranged in a circular array, and the multiple clamping cones surround a mounting hole for placing an external magnetic component. Through the relative sliding between the bushing and the pull rod, the inner wall of the bushing abuts against the conical clamping part, compressing the clamping part to contract, thereby clamping the external magnetic component. The structure is simple, enabling the clamp to clamp and release quickly, and improving the clamping speed of the magnetic component.

[0007] Furthermore, the inner wall of the bushing near the clamp is provided with a tapered hole adapted to the clamping part. The inner side of the tapered hole is used to abut against the clamping cones so that multiple clamping cones come together to clamp the magnetic component. The tapered hole and the conical clamping part are installed together, and the bushing provides guidance and positioning for the movement of the clamp, which can help the clamp to be accurately and quickly centered, improving the clamping efficiency and stability of the magnetic component. At the same time, the conical clamping part design makes clamping and releasing the magnetic component more convenient and quick. The operator only needs to place the magnetic component on the clamping part of the clamp, and the clamp will automatically clamp it. When releasing the magnetic component, simply release the clamping force of the clamp, and the magnetic component can be easily removed from the clamping part, improving production efficiency.

[0008] Furthermore, mounting grooves are formed between two adjacent clamping cones. Multiple sets of mounting grooves are provided, intersecting each other, with mounting holes located at the intersections. These multiple sets of mounting grooves allow for a larger contact area and tighter contact between the clamp and the magnetic component, thereby increasing the stability between them. This helps prevent the magnetic component from moving or twisting during processing, ensuring machining accuracy and quality.

[0009] Furthermore, the tensioning assembly includes a first tension body connected to the bushing, a second tension body connected to the pull rod, and a pull claw. The pull claw is rotatably mounted on the second tension body. The reciprocating pull claw is used to restrict or release the first tension body. Rotating the pull claw separates the first and second tension bodies from each other, causing the pull rod to slide relative to the bushing. The tensioning assembly is typically designed to be simple and straightforward, allowing operators to quickly and easily clamp and release magnetic components, saving operation time and improving clamping efficiency. Simultaneously, the pull claw allows for adjustment of the clamping force by adjusting the rotation angle. Operators can adjust the clamping force according to specific processing requirements and the characteristics of the magnetic component, meeting the needs of different processing tasks and ensuring that the clamping force of the fixture on the magnetic component is just right.

[0010] Furthermore, the second pull body is a ring structure sleeved on the bushing, and a rectangular notch is provided at the end of the second pull body near the first pull body; one end of the pull claw extends into the notch and abuts against the first pull body. The notch ensures that the pull claw is firmly installed on the outer wall of the second pull body, thereby improving the stability of the pull claw. This fixing method can effectively prevent the pull claw from moving or loosening during processing, ensuring the stability and accuracy of processing.

[0011] Furthermore, the pull claw has a long strip structure with a mounting part in the middle for mounting a pin. The mounting part has a through hole through which the pin passes, allowing the pull claw to be rotatably connected to the second pull body. The pull claw has a lever structure, which can apply a large clamping force with a small force. This means that even if the operator applies a small force, sufficient clamping force can be generated to fix the magnetic component, thereby ensuring the stability and accuracy of the machining process.

[0012] Furthermore, the pull claw is provided with an abutting part protruding from the mounting part, the abutting part being used to abut the first pull body.

[0013] Furthermore, the pull claws are provided in multiple sets, arranged in a circular array around the central axis of the second pull body. Multiple sets of pull claws can simultaneously clamp multiple parts of the magnetic component, thereby improving the clamping stability of the magnetic component on the device. This helps ensure that the magnetic component maintains a stable position during processing, avoiding movement or twisting due to uneven clamping. Simultaneously, multiple sets of pull claws can distribute the clamping force across multiple points on the magnetic component, rather than concentrating it at a single point. This helps reduce deformation or damage caused by uneven clamping force, ensuring the stability and accuracy of the magnetic component during processing.

[0014] Furthermore, the tensioning assembly also includes a push ring, which is sleeved on the second tension body. The sliding push ring drives the pull claw to rotate relative to the second tension body. The push ring has a relatively simple design and is easy to operate, requiring no complex adjustments or settings. At the same time, the clamping and releasing operation of the push ring is relatively quick, effectively saving clamping time and improving processing efficiency.

[0015] The beneficial effects of this utility model are as follows: This utility model uses a tensioning assembly to drive a pull rod, causing the clamp to slide relative to the bushing, enabling the clamp to quickly and stably hold external magnetic components, increasing the clamping speed of magnetic components, and thus improving production efficiency; the tapered hole and conical clamping part are installed together, and the bushing provides guidance and positioning for the movement of the clamp, which can help the clamp to accurately and quickly center, improving the clamping efficiency and stability of magnetic components; at the same time, the conical clamping part design makes clamping and releasing magnetic components more convenient and faster. Operators only need to place the magnetic component on the clamping part of the clamp, and the clamp can automatically clamp it. When clamping, the magnetic component can be easily removed from the mounting section simply by releasing the clamping force, thus improving production efficiency. The design of the tensioning assembly is usually simple and straightforward, allowing operators to quickly and easily clamp and release magnetic components, saving operation time and improving clamping efficiency. At the same time, the clamping force can be controlled by adjusting the rotation angle of the pull claws. Operators can adjust the clamping force according to specific processing requirements and the characteristics of the magnetic component, which can meet the needs of different processing tasks and ensure that the clamping force of the fixture on the magnetic component is just right. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a magnetic component drilling device according to the present invention;

[0017] Figure 2 This is a cross-sectional view of a magnetic component drilling device according to the present invention;

[0018] Figure 3 This is a schematic diagram of the main shaft mechanism of this utility model;

[0019] Figure 4 This is a sectional view of the spindle mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram of the shock absorption structure of this utility model;

[0021] Figure 6 This is an exploded view of the tensioning component of this utility model;

[0022] Figure 7 This is a schematic diagram of the fixture of this utility model;

[0023] Figure 8 This is a schematic diagram of the pull claw of this utility model.

[0024] The reference numerals in the figures include:

[0025] 1. Frame; 2. Drive motor; 3. Spindle mechanism; 4. Tool mechanism; 5. Bushing; 6. Fixture; 7. Tie rod; 8. Tensioning assembly; 9. Connecting part; 10. Clamping part; 11. Mounting groove; 12. Mounting hole; 13. Tapered hole; 14. First pulling body; 15. Second pulling body; 16. Mounting part; 17. Pin; 18. Abutting part; 19. Push ring; 20. Transmission assembly; 21. First bearing; 22. Fixed shaft; 23. Pull ring; 24. Push motor; 25. Second bearing; 26. Expansion ring; 27. Pulley; 28. Pull claw Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0027] Please see Figures 1 to 8As shown, this utility model includes a frame 1 and a drive motor 2, a spindle mechanism 3, and a cutting tool mechanism 4 mounted on the frame 1. The spindle mechanism 3 is used to clamp external magnetic components, and the cutting tool mechanism 4 is used to drill holes in the magnetic components clamped by the spindle mechanism 3. The spindle mechanism 3 includes a bushing 5, a clamp 6, a pull rod 7, and a tensioning assembly 8. The bushing 5 is rotatably mounted on the frame 1 and is a cylinder with openings at both ends. The drive motor 2 drives and connects to the bushing 5. The clamp 6 is movably mounted inside the bushing 5. One end of the pull rod 7 is connected to the clamp 6, and the other end of the pull rod 7 is connected to the tensioning assembly 8. The clamp 6 has a clamping part 10 that expands and contracts to clamp the magnetic components. The tensioning assembly 8 is mounted on the bushing 5 and drives the pull rod 7 to slide relative to the bushing 5. The bushing 5 is used to abut against the outside of the clamping part 10 to clamp the magnetic components. This invention uses a tensioning assembly 8 to drive a pull rod 7, which in turn causes the clamp 6 to slide relative to the bushing 5. This allows the clamp 6 to expand and contract, thereby quickly and stably clamping external magnetic components, increasing the clamping speed of magnetic components, and thus improving production efficiency.

[0028] In this embodiment, the external magnetic component is placed inside the clamp 6. The tensioning assembly 8 drives the pull rod 7 to slide relative to the bushing 5. The sliding pull rod 7 causes the clamp 6 to slide into the bushing 5. The inner wall of the bushing 5 abuts against the clamp 6. The clamp 6 retracts and clamps the external magnetic component. The drive motor 2 drives the spindle mechanism 3 to rotate the magnetic component. The tool mechanism 4 approaches the magnetic component and drills a hole. After drilling is completed, the drive motor 2 stops running. The tensioning assembly 8 drives the pull rod 7 to slide in the opposite direction relative to the bushing 5. The clamp 6 slides out of the bushing 5 and releases the magnetic component.

[0029] The clamp 6 includes a cylindrical connecting part 9 and a conical clamping part 10. The connecting part 9 is fixedly connected to the pull rod 7. The clamping part 10 has multiple clamping cones arranged in a circular array, forming a mounting hole 12 for placing an external magnetic component. Through the relative sliding between the bushing 5 and the pull rod 7, the inner wall of the bushing 5 abuts against the conical clamping part 10, compressing the clamping part 10 to contract, thereby clamping the external magnetic component. The structure is simple, enabling the clamp 6 to clamp and release quickly, and improving the clamping speed of the magnetic component.

[0030] The inner wall of the bushing 5 near the clamp 6 has a tapered hole 13 that matches the clamping part 10. The inner side of the tapered hole 13 is used to abut against the clamping cones so that multiple clamping cones come together to clamp the magnetic component. The tapered hole 13 and the conical clamping part 10 are installed together. The bushing 5 provides guidance and positioning for the movement of the clamp 6, which can help the clamp 6 to be accurately and quickly centered, improving the clamping efficiency and stability of the magnetic component. At the same time, the conical clamping part 10 design makes clamping and releasing the magnetic component more convenient and faster. The operator only needs to place the magnetic component on the clamping part 10 of the clamp 6, and the clamp 6 can automatically clamp it. When releasing the magnetic component, simply release the clamping force of the clamp 6, and the magnetic component can be easily removed from the clamping part 10, improving production efficiency.

[0031] A mounting groove 11 is formed between two adjacent clamping cones. Multiple sets of mounting grooves 11 are provided and are arranged intersectingly. Mounting holes 12 are located at the intersections of the mounting grooves 11. The multiple sets of mounting grooves 11 provide a larger contact area and a tighter contact, thereby increasing the stability between the clamp 6 and the magnetic component. This helps prevent the magnetic component from moving or twisting during processing, ensuring the accuracy and quality of the machining.

[0032] In this technical solution, the mounting groove 11 is provided in two sets, and the two sets of mounting grooves 11 are arranged in a cross shape on the clamping part 10, and the mounting hole 12 is located at the intersection of the two sets of mounting grooves 11.

[0033] The tensioning assembly 8 includes a first tension body 14 connected to the bushing 5, a second tension body 15 connected to the pull rod 7, and a pull claw 28. The pull claw 28 is rotatably mounted on the second tension body 15. The reciprocating pull claw 28 is used to restrict or release the first tension body 14. Rotating the pull claw 28 separates the first tension body 14 and the second tension body 15 from each other, causing the pull rod 7 to slide relative to the bushing 5. The design of the tensioning assembly 8 is generally simple and straightforward, allowing operators to quickly and easily clamp and release magnetic components, saving operation time and improving clamping efficiency. Simultaneously, the pull claw 28 allows for adjustment of the clamping force by adjusting the rotation angle. Operators can adjust the clamping force according to specific processing requirements and the characteristics of the magnetic components, meeting the needs of different processing tasks and ensuring that the clamping force of the fixture 6 on the magnetic components is just right.

[0034] The second pull body 15 is a ring structure sleeved on the bushing 5. A rectangular notch is provided at one end of the second pull body 15 near the first pull body 14; one end of the pull claw 28 extends into the notch and abuts against the first pull body 14. The rectangular notch ensures that the pull claw 28 is firmly installed on the outer wall of the second pull body 15, thereby improving the stability of the pull claw 28. This fixing method effectively prevents the pull claw 28 from moving or loosening during processing, ensuring the stability and accuracy of the processing.

[0035] The pull claw 28 is an elongated structure with a mounting portion 16 in the middle for mounting the pin 17. The mounting portion 16 has a through hole through which the pin 17 passes, allowing the pull claw 28 to be rotatably connected to the second pull body 15. The pull claw 28 is a lever structure, capable of applying a large clamping force with relatively small force. This means that even with a small force applied by the operator, sufficient clamping force can be generated to secure the magnetic component, thereby ensuring the stability and accuracy of the machining process.

[0036] The pull claw 28 is provided with an abutment portion 18 protruding from the mounting portion 16, and the abutment portion 18 is used to abut the first pull body 14.

[0037] The pull claws 28 are provided in multiple sets, arranged in a circular array around the central axis of the second pull body 15. Multiple sets of pull claws 28 can simultaneously clamp multiple parts of the magnetic component, thereby improving the clamping stability of the magnetic component on the device. This helps ensure that the magnetic component maintains a stable position during processing, avoiding movement or twisting due to uneven clamping. Simultaneously, multiple sets of pull claws 28 can distribute the clamping force across multiple points on the magnetic component, rather than concentrating it on a single point. This helps reduce deformation or damage caused by uneven clamping force, ensuring the stability and accuracy of the magnetic component during processing.

[0038] In this technical solution, the pull claws 28 are provided in three sets, and the three sets of pull claws 28 are arranged in a ring array around the central axis of the second pull body 15. This helps to reduce deformation or damage caused by uneven clamping force, and ensures the stability and accuracy of the magnetic parts during the processing.

[0039] The tensioning assembly 8 also includes a push ring 19, which is sleeved on the second tension body 15. The sliding push ring 19 drives the pull claw 28 to rotate relative to the second tension body 15. The push ring 19 has a relatively simple design structure and is easy to operate, requiring no complex adjustments or settings. At the same time, the clamping and releasing operation of the push ring 19 is relatively fast, which can effectively save clamping time and improve processing efficiency.

[0040] In a further technical solution, the spindle mechanism 3 is provided with a transmission assembly 20. The spindle mechanism 3 is rotatably connected to the frame 1 via the transmission assembly 20. The transmission assembly 20 includes a first bearing 21, an inner bushing 5 on the first bearing 21, and an outer shaft of the first bearing 21 mounted on the frame 1. The bushing 5 is rotatably connected to the frame 1 via the first bearing 21. The first bearing 21 reduces friction between the spindle mechanism 3 and the frame 1. At the same time, the first bearing 21 can absorb and reduce vibrations caused by drilling vibrations or impacts from the tool mechanism 4, making the bushing 5 operate more smoothly, reducing vibration and noise in the system, and ensuring the stability, efficiency, and reliability of the bushing 5's rotation, thereby improving drilling stability and drilling accuracy.

[0041] The number of the first bearings 21 is two sets, located in the middle of the bushing 5 and near the end of the tool mechanism 4, respectively. By setting two sets of first bearings 21 on the bushing 5, the support stability of the rotating shaft can be increased. This can effectively distribute the load on the shaft and ensure that the rotating shaft remains balanced and stable during rotation; at the same time, the dual-bearing design can improve the reliability of the mechanical system. If one bearing fails, the other bearing can still provide support and keep the mechanical system running. This increases the fault tolerance of the system and reduces downtime due to single point of failure.

[0042] The transmission assembly 20 also includes a shock-absorbing structure, which comprises a fixed shaft 22, a pull ring 23, and a push motor 24. The fixed shaft 22 is fixedly connected to the frame 1. One end of the pull ring 23 is connected to the fixed shaft 22 via a fisheye bearing, and the other end of the pull ring 23 is connected to the output end of the push motor 24 via a fisheye bearing. The pull ring 23 is sleeved on the bushing 5, and a second bearing 25 is provided between the pull ring 23 and the bushing 5. Due to its design characteristics, the fisheye bearing can effectively absorb and disperse impact and vibration forces, thereby reducing their transmission to other components of the mechanical system and improving the stability of the system. At the same time, the self-centering and high load-bearing capacity of the fisheye bearing help maintain the balance and stability of the main shaft, reducing the instability factors caused by impact and vibration in the main shaft mechanism 3.

[0043] The bushing 5 is provided with an expansion ring 26, and the second bearing 25 is connected to the bushing 5 via the expansion ring 26. The expansion ring 26 is used to limit the displacement of the second bearing 25. The expansion ring 26 is used to clamp the second bearing 25 on the bushing 5, ensuring a tight connection and torque transmission during rotation. This helps to reduce loosening and relative slippage during rotation, thereby reducing vibration and noise levels. At the same time, the expansion ring 26 can evenly distribute the load between the bushing 5 and the second bearing 25, reducing local stress concentration and thus improving the service life of the mechanical components.

[0044] The outer wall of the expansion ring 26 is provided with an annular groove around the central axis of the expansion ring 26, and an axial retaining ring is provided in the annular groove. The axial retaining ring cooperates with the expansion ring 26 to clamp the second bearing 25. By providing additional friction and clamping force, the axial retaining ring can effectively prevent the second bearing 25 on the bushing 5 from axially moving or sliding during operation.

[0045] A pulley 27 is fitted onto the bushing 5, and the pulley 27 is connected to the output end of the drive motor 2 via a belt. The conveyor pulley 27 is usually made of high-strength material, has good wear resistance and corrosion resistance, can withstand heavy loads and high-speed operation, has a long service life, and is easy to inspect, lubricate and replace regularly to maintain its normal operation and extend its service life.

[0046] One end of the pulley 27 is fixedly connected to the bushing 5 by bolts, and the other end of the pulley 27 is provided with a lock nut. The bolts and lock nut cooperate to fix the pulley 27. The bolted pulley 27 provides additional locking force to prevent the pulley 27 from loosening or falling off under vibration or other external forces, thereby enhancing the safety and reliability of the connection, helping to extend the service life of the connector, reducing the frequency of maintenance and replacement, and is suitable for applications that need to operate in high vibration environments.

[0047] In this embodiment, the external magnetic component is placed in the mounting hole 12 of the clamp 6. The sliding push ring 19 abuts against the pull claw 28. The pull claw 28 rotates relative to the second pull body 15 via the pin 17. The abutting part 18 of the pull claw 28 pushes the first pull body 14, causing the first pull body 14 to move away from the second pull body 15, which in turn causes the pull rod 7 to slide relative to the bushing 5. The pull rod 7 causes the clamp 6 to slide into the bushing 5. The inner wall of the bushing 5 abuts against the clamping part 10 of the clamp 6. The clamping part 10 contracts and clamps the external magnetic component. The drive motor 2 drives the spindle mechanism 3 to rotate the magnetic component. The tool mechanism 4 approaches the magnetic component and drills a hole. After drilling is completed, the drive motor 2 stops running. The tensioning assembly 8 drives the pull rod 7 to slide in the opposite direction relative to the bushing 5. The clamp 6 slides out of the bushing 5 and releases the magnetic component.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A magnetic component drilling device, comprising a frame (1), a driving motor (2), a spindle mechanism (3) and a tool mechanism (4) arranged on the frame (1), the spindle mechanism (3) being used for clamping an external magnetic component, and the tool mechanism (4) being used for drilling a hole on the magnetic component clamped by the spindle mechanism (3); Features: The spindle mechanism (3) comprises a shaft sleeve (5), a clamp (6), a pull rod (7) and a tensioning assembly (8); the shaft sleeve (5) is rotatably mounted on the frame (1); the shaft sleeve (5) is a cylinder with openings at both ends; the drive motor (2) drives the connected shaft sleeve (5); the clamp (6) is movably arranged in the shaft sleeve (5); one end of the pull rod (7) is connected to the clamp (6); the other end of the pull rod (7) is connected to the tensioning assembly (8); the clamp (6) has a clamping portion (10) that can expand and contract and is also used to clamp the magnetic part; the tensioning assembly (8) is mounted on the shaft sleeve (5); the tensioning assembly (8) drives the pull rod (7) to slide relative to the shaft sleeve (5); the shaft sleeve (5) is used to abut against the outer side of the clamping portion (10) so that the clamping portion (10) clamps the magnetic part.

2. A magnetic member drilling device according to claim 1, Features: The clamp (6) comprises a cylindrical connecting portion (9), a conical clamping portion (10), the connecting portion (9) being fixedly connected to the pull rod (7), and the clamping portion (10) being provided with a plurality of clamping cone blocks in an annular array, the plurality of clamping cone blocks being arranged around a mounting hole (12) for placing an external magnetic component.

3. A magnetic member drilling device according to claim 2, Features: The inner wall of one end of the shaft sleeve (5) close to the clamp (6) is provided with a tapered hole (13) adapted to the clamping portion (10), and the inner hole side surface of the tapered hole (13) is used to abut against the clamping cone block so that the plurality of clamping cone blocks are brought close to each other to clamp the magnetic member.

4. A magnetic member drilling device according to claim 2, Features: An installation groove (11) is formed between two adjacent clamping cone blocks, and the installation grooves (11) are provided in multiple groups. The multiple groups of installation grooves (11) are cross-arranged, and the installation holes (12) are located at the intersections of the installation grooves (11).

5. A magnetic member drilling device according to claim 1, Features: The tensioning assembly (8) comprises a first pulling body (14) connected to the shaft sleeve (5), a second pulling body (15) connected to the pulling rod (7), and a pulling claw (28); the pulling claw (28) is rotatably mounted on the second pulling body (15); the reciprocating pulling claw (28) is used to restrict or release the first pulling body (14); the pulling claw (28) is rotated to separate the first pulling body (14) and the second pulling body (15) from each other, thereby driving the pulling rod (7) to slide relative to the shaft sleeve (5).

6. A magnetic member drilling device according to claim 5, Features: The second pulling body (15) is a circular ring structure sleeved on the shaft sleeve (5); one end of the second pulling body (15) close to the first pulling body (14) is provided with a rectangular notch; one end of the pulling claw (28) extends into the notch to abut against the first pulling body (14).

7. A magnetic member drilling device according to claim 5, Features: The pulling claw (28) is of a long strip structure. A mounting portion (16) for mounting a pin shaft (17) is provided in the middle of the pulling claw (28). A through hole is provided on the mounting portion (16). The pin shaft (17) passes through the through hole so that the pulling claw (28) is rotatably connected to the second pulling body (15).

8. A magnetic member drilling device according to claim 7, Features: The pulling claw (28) is provided with a resisting portion (18) protruding from the mounting portion (16), and the resisting portion (18) is used to resist the first pulling body (14).

9. A magnetic member drilling device according to claim 5, Features: The pulling claws (28) are provided in a plurality of groups, and the plurality of groups of pulling claws (28) are distributed in a ring array around the central axis of the second pulling body (15).

10. A magnetic member drilling device according to claim 5, Features: The tensioning assembly (8) further comprises a push ring (19), which is sleeved on the second pulling body (15) and drives the pulling claw (28) to rotate relative to the second pulling body (15) by sliding the push ring (19).

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