Composite brazing drill bit and drilling method

Abstract

The invention discloses a composite brazing drill bit, and relates to the technical field of drill bits, the composite brazing drill bit comprises a mounting top disc, a connecting column is fixedly mounted at the bottom of the mounting top disc, an air guide mechanism is integrally mounted at the bottom of the connecting column, a mounting mechanism is fixedly mounted at the bottom of the air guide mechanism, and mounting holes are annularly formed in the mounting top disc at equal intervals; the technical scheme has remarkable advantages, in the aspect of disassembly and assembly, the drill bit can be disassembled and assembled by pushing the sliding ring and rotating the armrest ball by means of the adjusting and locking module without complex procedures and additional tools, the torsion spring and the magnetic structure guarantee stability, the replacement time is shortened, the existing problem of tedious disassembly and assembly is solved, torsion can be stably borne, looseness is prevented, and in the aspect of heat dissipation, the service life is prolonged. The multi-path mechanism enables the air guide piece to actively guide air, the fan is matched to assist ventilation, air directly reaches the blades to dissipate heat and does not lose efficacy when penetrating into workpieces, high-temperature abrasion is reduced, the problem of poor heat dissipation in the prior art is solved, and machining requirements are met.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a composite brazing drill bit and drilling method. Background Technology

[0002] With the continuous advancement of social industrialization, the machining industry is gradually maturing, and processing technologies are constantly being optimized and upgraded. Correspondingly, machining tools are also iterating and innovating towards higher efficiency and durability. Among these, composite brazing technology, as a key technology for improving the structural stability and performance of tools, is increasingly widely used in the tool manufacturing field, especially in the production of core cutting tools such as drill bits. Composite brazing technology achieves complementary advantages in material properties by precisely welding materials with different properties (such as high-strength matrix materials and high-hardness cutting edge materials), effectively overcoming the limitations of single materials in terms of strength, hardness, and wear resistance. Drill bits, as an indispensable core tool in machining, directly affect machining accuracy, efficiency, and cost control, playing a crucial role in drilling operations. Traditional drill bits are mostly manufactured using integral materials or simple welding processes, which suffer from problems such as easy wear of the cutting edge, easy breakage of the base body, and poor heat dissipation performance. They are difficult to meet the requirements of high-strength, long-term, and complex machining. However, drill bits made using composite brazing technology can use wear-resistant materials such as cemented carbide as the cutting edge and high-toughness alloy structural steel as the base body, which are firmly connected by composite brazing technology. This ensures that the cutting edge has sufficient hardness and wear resistance to cope with cutting difficult materials, while the toughness of the base body can buffer the cutting impact and prevent the drill bit from breaking. At the same time, the high precision of the composite brazing process can reduce the connection gap between the cutting edge and the base body, reduce the accumulation of heat at the connection point, provide a basis for the design of subsequent heat dissipation structures, and further improve the service life and machining stability of the drill bit. Currently, conventional drill bits on the market generally suffer from poor heat dissipation and insufficient assembly stability. This directly leads to increased wear and edge chipping of the drill bit during high-speed cutting, which not only shortens the service life of the drill bit but also affects the dimensional accuracy and surface quality of the drill hole, thus restricting the improvement of overall processing efficiency. To solve the above heat dissipation problems, targeted improvement designs have emerged in related technical fields. For example, Chinese patent with publication number "CN208961065U" discloses a brazed tooth drill bit. The drill bit includes a drill bit body and a drill shank that are brazed together. The tooth cutting edge of the drill bit body is provided with multiple connecting holes, which are designed to achieve passive heat dissipation through the connecting holes. At the same time, it allows the coolant to reach the tooth cutting edge area directly through the connecting holes, thereby enhancing the heat dissipation effect and improving drilling efficiency. However, the aforementioned existing technical solutions still have obvious defects and shortcomings in practical applications: First, the heat dissipation structure design has limitations. The drill bit only relies on the connecting holes on the cutting edge for heat dissipation. When the drill bit penetrates deep into the workpiece, the connecting holes are easily blocked by the workpiece material, preventing air circulation inside the hole and making it difficult for external air to enter. At this time, the heat dissipation function of the connecting holes is completely ineffective, failing to meet the heat dissipation requirements in deep hole machining or long-term continuous machining scenarios, and the heat dissipation effect is greatly reduced. Second, the drill bit is not convenient to disassemble and replace. In the existing technology, the installation of the drill bit and drilling tool mostly adopts complex processes such as threaded connection. When the drill bit needs to be replaced due to wear, the disassembly and assembly steps are cumbersome and time-consuming, which seriously affects the continuity of drilling operations and reduces the overall processing efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a composite brazing drill bit and a drilling method to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a composite brazing drill bit, comprising: The mounting plate has a connecting column fixedly installed at its bottom. An air guide mechanism is integrally formed at the bottom of the connecting column. An installation mechanism is fixedly installed at the bottom of the air guide mechanism. The mounting plate has mounting holes arranged in a ring at equal intervals. The mounting holes on the mounting plate are used to install the mounting plate to the output shaft end of the drive device that drives the rotating turntable. A hexagonal column is installed at the bottom of the air guide mechanism via an installation mechanism. A connecting rod is welded to the bottom of the hexagonal column, and a composite brazed drill bit body is fixedly installed at the bottom end of the connecting rod. The installation mechanism is used to install the connecting rod and the composite brazed drill bit body at its bottom. The air guide mechanism is used to guide external air into the interior of the composite brazed drill bit body to achieve a heat dissipation effect. The composite brazed drill bit body includes a fixed base and a ventilation main cavity. The fixed base is integrally formed and installed at the bottom of the connecting rod. The drill bit spindle is fixedly installed at the bottom of the fixed base. Drill bit digging blades are welded and installed at equal intervals in a ring at the lower end of the outer surface of the drill bit spindle. Discharge guide grooves are evenly spaced at the gaps between the drill bit digging blades on the outer surface of the drill bit spindle. Heat dissipation holes are opened inside the discharge guide grooves. The ventilation main cavity is opened in the middle of the inner side of the connecting rod, the mounting mechanism and the drill bit spindle. The heat dissipation holes and the ventilation main cavity are connected. Each ventilation main cavity is interconnected. The air guiding mechanism is used to guide the external airflow into the ventilation main cavity and discharge it to each heat dissipation hole, so as to realize the rapid entry of air into the drill bit digging blades to achieve the heat dissipation effect.

[0005] Preferably, the air guiding mechanism includes a connecting shaft integrally formed at the bottom of the connecting column, the mounting mechanism is located at the bottom end of the connecting shaft, the main ventilation cavity in the air guiding mechanism is opened in the middle of the connecting shaft, and the connecting shaft is used to connect the load-bearing mounting mechanism. Air inlets are arranged in a ring at equal intervals around the periphery of the connecting shaft. The air inlets are connected to the main ventilation cavity located inside the connecting shaft. The air inlets are used to guide the outside airflow into the main ventilation cavity to achieve air circulation between the main ventilation cavity and the heat dissipation holes to achieve a heat dissipation effect.

[0006] Preferably, the air guide plates are welded and installed on the periphery of the connecting shaft in a ring-shaped arrangement at equal intervals. The air guide plates are located on the outside of the air inlet. The air guide plates are used to guide air during the rotation of the connecting shaft. When the connecting shaft is rotating at high speed, it drives the air guide plates to rotate rapidly. The air guide plates are fan-shaped and have an arc-shaped cross-section. When rotating, they can quickly trap air and quickly fill the air inlet. Finally, the air is discharged from the heat dissipation holes through the main ventilation cavity to achieve the effect of air circulation, heat dissipation and heat exchange.

[0007] Preferably, an annular tube is sleeved on the outside of the mounting plate. The bottom of the annular tube has exhaust bends arranged in a ring at equal intervals. The output end of the exhaust bends is inclined towards the air guide plate. An external blower connector is fixedly installed at the input end of the annular tube. The annular tube is connected to an external fan through the external blower connector. The annular tube is used to guide the high-pressure airflow of the external fan through the exhaust bends to the air guide plate. The high-pressure airflow is poured into the air inlet through the high-speed rotating air guide plate to achieve a heat dissipation effect. The mounting plate is welded to the top of the annular tube in a ring-shaped arrangement with equal spacing. The outer end of the mounting plate has a mounting hole. The mounting plate and the mounting hole are used to install the annular tube, ensuring that the annular tube can be stably arranged on the outside of the mounting plate and the air guide plate.

[0008] Preferably, the installation mechanism includes an installation spindle welded to the bottom of a connecting shaft. A ventilation main cavity located within the installation mechanism is opened in the middle of the inner side of the installation spindle. A hexagonal bracket is fixedly installed at the bottom of the installation spindle, and a hexagonal column is inserted into the inner side of the hexagonal bracket. Limiting modules are fixedly installed in a ring at equal intervals around the periphery of the hexagonal bracket. An adjustment module is installed in the middle of the installation spindle. The adjustment module and the limiting module are connected in a transmission manner. The adjustment module is used to adjust the limiting module to limit the installation of the hexagonal column at the bottom. The inner cavity of the hexagonal bracket and the hexagonal column are both regular hexagons, used to bear the torque during the rotation of the composite brazed drill bit body. The ventilation main cavity in the installation spindle, the hexagonal column, and the ventilation main cavity of the connecting rod are connected. A locking module is sleeved and installed on the upper part of the outer surface of the mounting spindle. The locking module is used to lock the adjustment module, which is limited by the locking module to achieve a stable installation of the hexagonal column, the connecting rod at its bottom, and the composite brazed drill bit body.

[0009] Preferably, the adjustment module includes an outer ring sleeve, which is fixedly installed on the outside of the mounting spindle. An annular groove is formed between the outer ring sleeve and the mounting spindle. A torsion spring is fixedly connected inside the annular groove. A movable ring is fixedly installed at the bottom of the torsion spring. The movable ring is rotatably connected inside the annular groove. The torsion spring and the movable ring are used to provide torque and elasticity for rotational reset to ensure that the limit module automatically engages with the hexagonal column. A connecting ring, integrally formed on the outside of the movable ring, has a beveled tooth ring fixedly installed at the bottom of the connecting ring. The beveled tooth ring is rotatably fitted onto the outer surface of the mounting spindle. The beveled tooth ring obtains elastic force through a torsion spring and transmits it to the limiting module to achieve the locking and fixing of the limiting module to the hexagonal column.

[0010] Preferably, the adjusting rods are arranged in a ring at equal intervals and fixedly installed on the outside of the connecting ring. The outer end of the adjusting rod is fixedly installed with a handrail ball. The adjusting rod and the handrail ball together constitute the force application operation part in the disassembly and adjustment process, so as to drive the connecting ring to rotate by gripping and realize the manual adjustment and disassembly function.

[0011] Preferably, the limiting module includes side arms, which are arranged in a ring at equal intervals and fixedly installed on the lower outer side of the hexagonal card holder. A bevel gear is rotatably connected to the outer end of the side arm near the hexagonal card holder. The bevel gear meshes with the bevel gear ring and is used to transmit the rotational power of the bevel gear ring. An outer rail is fixedly installed on the upper outer side of the side arm. A lead screw is rotatably connected inside the outer rail. A slider is threadedly connected to the outer surface of the lead screw. A limit arm is fixedly installed at the bottom of the slider. A limit pin is fixedly installed at the lower end of the limit arm. The limit pin is used to limit the engagement of the hexagonal pin to realize the installation of the composite brazed drill bit body. The limiting holes are arranged in a ring at equal intervals on the outside of the hexagonal column. The end of the limiting pin is inserted into the inside of the limiting hole. The limiting hole is used to accommodate the limiting pin to achieve the snap-fit ​​installation of the hexagonal column. The function of the torsion spring is to provide elasticity, so that when the adjusting gear ring is twisted during installation, the limiting pin is in a compressed state after being driven outward. After the hexagonal column is inserted and installed, there is no need to twist the connecting ring in the opposite direction. Just loosen the connecting ring and the torsion spring will return to the compressed state, which will drive the connecting ring to reset and rotate, causing the bevel gear ring to drive the bevel gear drive screw to reset, so that the limiting pin is inserted into the limiting hole to achieve a stable snap-fit. The torsion spring reset design facilitates quick reset and retraction snap-fit. The torsion spring uses a high elasticity and high torsion spring to ensure that its elasticity can drive the bevel gear ring to drive the bevel gear to rotate.

[0012] Preferably, the locking module includes a fixing ring, which is fixedly installed on the upper part of the outer surface of the mounting spindle. The bottom of the fixing ring is fixedly installed with sleeves arranged in a ring at equal intervals. A sliding rod is slidably connected inside the sleeve. A sliding ring is fixedly installed at the bottom of the sliding rod. The sliding ring moves on the upper part of the outer surface of the mounting spindle. The bottom of the sliding ring is fixedly installed with locking blocks arranged in a ring at equal intervals. The retaining sleeve, with its equally spaced rings, is fixedly connected to the top of the connecting ring. The bottom of the retaining block is inserted into the retaining sleeve, and the bottom of the retaining block is equipped with a magnet. The retaining block is magnetically attracted and inserted into the retaining sleeve. The retaining sleeve is made of a metal material that can be attracted by magnets. The retaining block is magnetically inserted into the retaining sleeve to limit the position of the connecting ring, thereby limiting the position of the bevel gear ring and its meshing bevel gear, ensuring the hexagonal column is securely engaged. During use, after the adjustment and limiting module is engaged and installed, the sliding ring is released. At this time, the sliding ring is subjected to... Under the influence of gravity and the magnetic attraction of the magnet at the end of the card block, it can be attracted and inserted into the inside of the card sleeve, thereby locking and fixing the connecting ring. Locking and fixing the connecting ring further securely engages the bottom limiting module, achieving a stable installation of the hexagonal column. When disassembly is required, simply push the sliding ring upwards, and then push the adjusting rod and the handle ball to drive the connecting ring to rotate. The rotation of the connecting ring drives the bevel gear ring to rotate, which in turn drives each lead screw to drive the slider on it to move the limiting pin out of the limiting hole, achieving quick disassembly and assembly.

[0013] A drilling method includes the following steps: Step 1: Install the top plate and fix it to the output shaft end of the drive device that drives the rotating turntable through the mounting holes on it; install the top plate and connect it to the external fixed structure through the mounting holes on it; lay the annular tube on the outside of the top plate and the air guide mechanism; connect the input end of the annular tube to the external fan through the external blower connector. Step 2: Push the sliding ring in the locking module upwards to disengage the locking block from the inside of the sleeve; hold the handle ball at the outer end of the adjusting rod to drive the connecting ring to rotate, the connecting ring drives the movable ring to rotate and compresses the torsion spring, the movable ring drives the bevel gear ring to rotate, the bevel gear ring meshes with the bevel gear to drive the lead screw to rotate, the lead screw drives the slider, limit arm and limit pin to move outwards; insert the hexagonal pin into the hexagonal slot, release the handle ball, the torsion spring returns to its original position and drives the movable ring and bevel gear ring to reset, the bevel gear drives the lead screw to rotate in the opposite direction, and the limit pin inserts into the limit hole on the outside of the hexagonal pin; release the sliding ring to allow the locking block to insert into the inside of the sleeve; Step 3: Start the drive equipment. The drive equipment drives the connecting column, air guide mechanism, installation mechanism, hexagonal column, connecting rod and composite brazed drill bit body to rotate synchronously through the mounting plate. The drill bit spindle drives the drill bit digging blade to drill the workpiece. Waste material is discharged through the discharge guide chute. Step 4: The air guide mechanism rotates with the connecting column, and the air guide plate on the side of the connecting shaft rotates to trap the air. The air enters the main ventilation chamber through the air inlet. If it is necessary to enhance heat dissipation, start the external fan. The high-pressure airflow enters the annular pipe through the external blower connector, blows through the exhaust bend to the air guide plate, and assists the air to enter the main ventilation chamber. The air flows along the main ventilation chamber and is discharged through the heat dissipation holes to the drill bit cutting blade. Step 5: Push the sliding ring in the locking module upwards to disengage the locking block from the inside of the sleeve; hold the handle ball to drive the connecting ring to rotate, the connecting ring drives the bevel gear ring to rotate, the bevel gear ring drives the bevel gear to rotate, the lead screw drives the slider, limit arm and limit pin to move outwards, and the limit pin disengages from the limit hole of the hexagonal pin; pull the hexagonal pin out of the hexagonal chuck to complete the disassembly of the old composite brazed drill bit body; Step 6: Align the hexagonal post of the new composite brazed drill bit body with the hexagonal clasp and insert it. Loosen the handle ball to reset the torsion spring and drive the limit pin to insert into the limit hole. Loosen the sliding ring to insert the clasp into the sleeve to lock and fix it, thus completing the installation of the new composite brazed drill bit body.

[0014] The technical effects and advantages of this invention are as follows: 1. During the application of this technical solution, by setting up adjustment and locking modules, the installation and replacement process of the composite brazed drill bit body can be simplified during use. It eliminates the need for complex threaded installation procedures and additional tools. Limit adjustment can be completed simply by pushing the sliding ring to unlock and holding the handle ball to drive the connecting ring to rotate. After releasing the handle ball, the torsion spring automatically resets to achieve a stable lock. After releasing the sliding ring, the magnetic structure can lock the adjustment module, thereby achieving the effect of quick assembly and disassembly of the drill bit. This significantly shortens the drill bit replacement time, ensures the continuity of drilling operations, and effectively improves the overall processing efficiency. It solves the problem of cumbersome and time-consuming drill bit replacement and disassembly steps in the existing technology. At the same time, the cooperation structure of the hexagonal clasp and hexagonal column ensures that the drill bit can stably bear the torque when rotating, avoid slippage or loosening, improve the assembly stability, and prevent the processing accuracy from being affected by unstable assembly. This further adapts to the needs of machining for efficient and stable operation. 2. During the application of this technical solution, by setting up a multi-path heat dissipation mechanism, efficient heat dissipation of the drill bit can be achieved during use. When drilling, the air guide mechanism rotates synchronously with the drill bit, which can actively intercept the outside air and guide it into the main ventilation chamber. If the heat dissipation requirement is high, it can also be combined with an external fan and annular pipe to introduce high-pressure airflow to assist ventilation. The air flows through the main ventilation chamber to the heat dissipation holes and directly reaches the drill bit's cutting blade, specifically removing heat from the cutting area, thereby achieving a continuous and stable heat dissipation effect. Even if the drill bit is deep into the workpiece, heat dissipation can still be achieved through internal airflow, avoiding the failure of the heat dissipation function. At the same time, the heat dissipation structure does not affect the discharge of waste material through the discharge guide groove, reducing the increased wear and edge breakage of the drill bit caused by high temperature, extending the service life of the drill bit, solving the problem of the drill bit's heat dissipation holes being easily blocked and the heat dissipation effect being poor in the existing technology, meeting the heat dissipation requirements of deep hole processing or long-term continuous processing, and adapting to the requirements of machining for tool durability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a bottom-view structural diagram of the present invention.

[0017] Figure 3 This is a schematic diagram of the split state of the present invention.

[0018] Figure 4 This is a top-view structural diagram of the disassembled installation mechanism of the present invention.

[0019] Figure 5 This is a front view schematic diagram of the disassembled installation mechanism of the present invention.

[0020] Figure 6 This is a top view of the adjustment module structure of the present invention.

[0021] Figure 7 This is a bottom view of the adjustment module structure of the present invention.

[0022] Figure 8 This is a schematic diagram of the annular tube structure of the present invention.

[0023] Figure 9 For the present invention Figure 2 A magnified structural diagram at point A.

[0024] In the diagram: 1. Mounting top plate; 2. Connecting column; 3. Air guide mechanism; 31. Connecting shaft; 32. Air inlet; 33. Air guide plate; 34. Annular pipe; 35. Mounting top plate; 36. Exhaust bend; 37. External blower connector; 4. Mounting hole; 5. Hexagonal column; 6. Mounting mechanism; 61. Mounting spindle; 62. Hexagonal bracket; 63. Limiting module; 631. Side arm; 632. Bevel gear; 633. Outer rail; 634. Lead screw; 635. Slider; 636. Limiting arm; 637. Limiting pin; 638. Limiting hole; 64. Adjustment module; 641, outer ring sleeve; 642, annular groove; 643, torsion spring; 644, movable ring; 645, connecting ring; 646, bevel ring; 647, adjusting rod; 648, handrail ball; 65, locking module; 651, fixed ring; 652, sleeve; 653, slide rod; 654, sliding ring; 655, locking block; 656, ferrule; 7, connecting rod; 8, composite brazed drill bit body; 81, fixed seat; 82, ventilation main cavity; 83, drill bit spindle; 84, drill bit excavation blade; 85, discharge guide groove; 86, heat dissipation hole. Detailed Implementation

[0025] 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.

[0026] like Figures 1 to 9As shown, the composite brazed drill bit provided by the present invention significantly simplifies the installation and replacement process of the composite brazed drill bit body 8 by setting an adjustment module 64 and a locking module 65. It eliminates the need for complex threaded installation procedures and additional tools; simply pushing the sliding ring 654 to unlock and holding the handle ball 648 to drive the connecting ring 645 to rotate completes the limit adjustment. After releasing the handle ball 648, the torsion spring 643 automatically resets to achieve a secure clamping. After releasing the sliding ring 654, the magnetic structure can also lock the adjustment module 64, effectively achieving rapid drill bit installation and removal, significantly shortening drill bit replacement time, ensuring continuous drilling operations, and improving overall processing efficiency. This solves the problem of cumbersome and time-consuming drill bit replacement and removal steps in the prior art. Simultaneously, the mating structure of the hexagonal chuck 62 and the hexagonal post 5 ensures stable torque bearing during drill bit rotation, preventing slippage or loosening, improving assembly stability, and preventing instability from affecting machining precision. In terms of heat dissipation performance, the drill bit can achieve efficient heat dissipation by setting up multi-path heat dissipation related mechanisms. During drilling, the air guide mechanism 3 rotates synchronously with the drill bit, which can actively intercept the outside air and guide it into the ventilation main cavity 82. If the heat dissipation demand is high, the external fan and the annular pipe 34 can be used to introduce high-pressure airflow to assist ventilation. The air flows through the ventilation main cavity 82 to the heat dissipation hole 86 and directly to the drill bit cutting blade 84, which specifically removes the heat from the cutting area and achieves continuous and stable heat dissipation. Even if the drill bit is deep into the workpiece, it can still maintain the heat dissipation function through the internal air flow to avoid heat dissipation failure. Moreover, the heat dissipation structure does not affect the discharge of waste through the discharge guide groove 85, reducing the wear and tear and chipping of the drill bit caused by high temperature, and extending the service life of the drill bit. It solves the problem that the heat dissipation hole 86 of the drill bit is easily blocked and the heat dissipation effect is poor in the existing technology, meets the heat dissipation requirements of deep hole processing or long-term continuous processing, and fully adapts to the requirements of machining for efficient, stable operation and tool durability.

[0027] In terms of specific structural installation, the structural body can be constructed according to the inventive concept of this embodiment. In this embodiment, no special limitations are imposed.

[0028] In this embodiment, a composite brazing drill bit includes: The mounting plate 1 has a connecting column 2 fixedly installed at its bottom. The bottom of the connecting column 2 is integrally formed with an air guide mechanism 3. The bottom of the air guide mechanism 3 is fixedly installed with an installation mechanism 6. The mounting plate 1 has mounting holes 4 arranged in a ring at equal intervals. The mounting holes 4 on the mounting plate 1 are used to install the mounting plate 1 to the output shaft end of the drive equipment that drives the rotating turntable. Hexagonal column 5 is installed at the bottom of air guide mechanism 3 via mounting mechanism 6. Connecting rod 7 is welded to the bottom of hexagonal column 5. Composite brazed drill bit body 8 is fixedly installed at the bottom end of connecting rod 7. Mounting mechanism 6 is used to install connecting rod 7 and composite brazed drill bit body 8 at its bottom. Air guide mechanism 3 is used to guide external air into the interior of composite brazed drill bit body 8 to achieve heat dissipation effect. The composite brazed drill bit body 8 includes a fixed base 81 and a ventilation main cavity 82. The fixed base 81 is integrally formed and installed at the bottom of the connecting rod 7. The drill bit spindle 83 is fixedly installed at the bottom of the fixed base 81. Drill bit digging blades 84 are welded and installed at equal intervals in a ring at the lower end of the outer surface of the drill bit spindle 83. Discharge guide grooves 85 are evenly spaced at the gaps between the drill bit digging blades 84 on the outer surface of the drill bit spindle 83. Heat dissipation holes 86 are opened inside the discharge guide grooves 85. The ventilation main cavity 82 is opened in the middle of the inner side of the connecting rod 7, the mounting mechanism 6 and the drill bit spindle 83. The heat dissipation holes 86 and the ventilation main cavity 82 are connected. Each ventilation main cavity 82 is interconnected. The air guiding mechanism 3 is used to guide the external airflow into the ventilation main cavity 82 and discharge it to each heat dissipation hole 86, so as to realize the rapid entry of air into the drill bit digging blades 84 to achieve the heat dissipation effect.

[0029] The air guiding mechanism 3 includes a connecting shaft 31, which is integrally formed at the bottom of the connecting column 2. The mounting mechanism 6 is located at the bottom end of the connecting shaft 31. The ventilation main cavity 82 located in the air guiding mechanism 3 is opened in the middle of the connecting shaft 31. The connecting shaft 31 is used to connect and support the mounting mechanism 6. Air inlets 32 are arranged in a ring at equal intervals around the periphery of the connecting shaft 31. The air inlets 32 are connected to the ventilation main cavity 82 located inside the connecting shaft 31. The air inlets 32 are used to introduce outside airflow into the ventilation main cavity 82 so as to realize air circulation between the ventilation main cavity 82 and the heat dissipation holes 86 to achieve heat dissipation.

[0030] The air guide plate 33 is welded and installed on the periphery of the connecting shaft 31 in a ring with equal spacing. The air guide plate 33 is set on the outside of the air inlet 32. The air guide plate 33 is used to guide the air during the rotation of the connecting shaft 31. When the connecting shaft 31 is rotating at high speed, it drives the air guide plate 33 to rotate rapidly. The air guide plate 33 is fan-shaped and has an arc-shaped cross section. When rotating, it can quickly intercept the air and quickly fill the air inlet 32. Finally, the air is discharged from the heat dissipation hole 86 through the ventilation main cavity 82 to achieve the effect of air circulation, heat dissipation and heat exchange.

[0031] An annular pipe 34 is sleeved on the outside of the mounting plate 1. The bottom of the annular pipe 34 has exhaust bends 36 arranged in a ring at equal intervals. The output end of the exhaust bends 36 is inclined towards the air guide plate 33. An external blower connector 37 is fixedly installed at the input end of the annular pipe 34. The annular pipe 34 is connected to an external fan through the external blower connector 37. The annular pipe 34 is used to guide the high-pressure airflow of the external fan through the exhaust bends 36 to the air guide plate 33. The high-pressure airflow is poured into the air inlet 32 ​​through the high-speed rotating air guide plate 33 to achieve the heat dissipation effect. The mounting plate 35 is welded to the top of the annular tube 34 in a ring-shaped arrangement with equal spacing. The outer end of the mounting plate 35 is provided with mounting holes 4. The mounting plate 35 is used to install the annular tube 34 in conjunction with the mounting holes 4, so that the annular tube 34 can be stably arranged on the outside of the mounting plate 1 and the air guide plate 33.

[0032] The mounting mechanism 6 includes a mounting spindle 61, which is welded to the bottom of the connecting shaft 31. The ventilation main cavity 82 located inside the mounting mechanism 6 is opened in the middle of the inner side of the mounting spindle 61. A hexagonal bracket 62 is fixedly installed at the bottom of the mounting spindle 61. A hexagonal column 5 is inserted and installed inside the hexagonal bracket 62. Limiting modules 63 are fixedly installed in a ring at equal intervals around the periphery of the hexagonal bracket 62. An adjustment module 64 is installed in the middle of the mounting spindle 61. The adjustment module 64 and the limiting module 63 are connected by a transmission. The adjustment module 64 is used to adjust the limiting module 63 to limit the installation of the hexagonal column 5 at the bottom. The inner cavity of the hexagonal bracket 62 and the hexagonal column 5 are both regular hexagons, which are used to bear the torque during the rotation of the composite brazed drill bit body 8. The ventilation main cavity 82 inside the mounting spindle 61, the hexagonal column 5, and the ventilation main cavity 82 of the connecting rod 7 are connected. A locking module 65 is sleeved and installed on the upper end of the outer surface of the mounting spindle 61. The locking module 65 is used to lock the adjustment module 64. The adjustment module 64 is limited by the locking module 65 to achieve a stable installation of the hexagonal column 5, the connecting rod 7 at its bottom, and the composite brazed drill bit body 8.

[0033] The adjustment module 64 includes an outer ring sleeve 641, which is fixedly installed on the outside of the mounting spindle 61. An annular groove 642 is formed between the outer ring sleeve 641 and the mounting spindle 61. A torsion spring 643 is fixedly connected inside the annular groove 642. A movable ring 644 is fixedly installed at the bottom of the torsion spring 643. The movable ring 644 is rotatably connected inside the annular groove 642. The torsion spring 643 and the movable ring 644 are used to provide torque and elasticity for rotational reset to ensure that the limit module 63 automatically engages with the hexagonal column 5. A connecting ring 645 is integrally formed on the outside of the movable ring 644. A bevel tooth ring 646 is fixedly installed at the bottom of the connecting ring 645. The bevel tooth ring 646 is rotatably fitted onto the outer surface of the mounting spindle 61. The bevel tooth ring 646 obtains elastic force through the torsion spring 643 and transmits it to the limiting module 63 to realize the locking and fixing of the limiting module 63 to the hexagonal column 5.

[0034] Adjusting rods 647 are fixedly installed on the outside of connecting ring 645 in a ring-shaped arrangement with equal spacing. A handle ball 648 is fixedly installed on the outer end of the adjusting rods 647. The adjusting rods 647 and the handle ball 648 together constitute the force application operation part in the disassembly and adjustment process, so as to drive the connecting ring 645 to rotate by gripping, so as to realize the manual adjustment and disassembly function.

[0035] The limiting module 63 includes side arms 631, which are arranged in a ring at equal intervals and fixedly installed on the lower outer side of the hexagonal card holder 62. The outer end of the side arm 631 is rotatably connected to a bevel gear 632 near the hexagonal card holder 62. The bevel gear 632 and the bevel gear ring 646 are meshed and connected. The bevel gear 632 is used to transmit the rotational power of the bevel gear ring 646. The outer rail 633 is fixedly installed on the upper outer side of the side arm 631. The inner side of the outer rail 633 is rotatably connected to the lead screw 634. The outer surface of the lead screw 634 is threadedly connected to the slider 635. The bottom of the slider 635 is fixedly installed with a limit arm 636. The lower end of the limit arm 636 is fixedly installed with a limit pin 637. The limit pin 637 is used to limit the engagement of the hexagonal post 5 to realize the installation of the composite brazing drill bit body 8. The outer surface of the lead screw 634 is provided with a bellows cover for dust protection. Limiting holes 638, arranged in a ring at equal intervals, are provided on the outer side of the hexagonal post 5. The end of the limiting pin 637 is inserted into the inner side of the limiting hole 638. The limiting hole 638 is used to accommodate the limiting pin 637 to achieve the snap-fit ​​installation of the hexagonal post 5. The function of the torsion spring 643 is to provide elastic force, so that when the adjusting gear ring is twisted during installation, the limiting pin 637 is in a compressed state after being driven outward by the torsion spring ring. After the hexagonal post 5 is inserted and installed, there is no need to twist the connecting ring 6 in the reverse direction. 45. Simply loosen the connecting ring 645 and release the torsion spring 643 from the compressed state to drive the connecting ring 645 to reset and rotate, causing the bevel gear ring 646 to drive the bevel gear 632 to drive the lead screw 634 to reset, causing the limit pin 637 to be inserted into the limit hole 638 to achieve a stable locking. The reset design of the torsion spring 643 facilitates quick reset and retraction locking. The torsion spring 643 adopts a high-elasticity and high-torsion spring to ensure that its elasticity can drive the bevel gear ring 646 to drive the bevel gear 632 to rotate.

[0036] The locking module 65 includes a retaining ring 651, which is fixedly installed on the upper part of the outer surface of the mounting spindle 61. The bottom of the retaining ring 651 is fixedly installed with a sleeve 652 arranged in a ring at equal intervals. The sleeve 652 is slidably connected to a slide rod 653. The bottom of the slide rod 653 is fixedly installed with a sliding ring 654. The sliding ring 654 is movable on the upper part of the outer surface of the mounting spindle 61. The bottom of the sliding ring 654 is fixedly installed with a locking block 655 arranged in a ring at equal intervals. The retaining sleeve 656, arranged in a ring at equal intervals, is fixedly connected to the top of the connecting ring 645. The bottom of the retaining block 655 is inserted into the retaining sleeve 656. The bottom of the retaining block 655 is equipped with a magnet. The retaining block 655 is magnetically attracted and inserted into the retaining sleeve 656. The retaining sleeve 656 is made of a metal material that can be attracted by a magnet. The retaining block 655 is magnetically inserted into the retaining sleeve 656 to limit the connecting ring 645, thereby limiting the bevel gear ring 646 and its meshing bevel gear 632, ensuring that the hexagonal column 5 is securely engaged. During use, after the adjustment and limiting module 63 is engaged and installed, the sliding ring 654 is released. At this time, the sliding ring 654 is affected by gravity. The magnetic attraction of the magnet at the end of the card block 655 allows it to be inserted into the card sleeve 656, thereby locking and fixing the connecting ring 645. Locking and fixing the connecting ring 645 further secures the bottom limiting module 63, achieving a stable installation of the hexagonal column 5. When disassembly is required, simply push the sliding ring 654 upward, and then push the adjusting rod 647 and the armrest ball 648 to rotate the connecting ring 645. The rotation of the connecting ring 645 drives the bevel ring 646 to rotate the bevel gear 632, which in turn drives each lead screw 634 to drive the slider 635 on it to move the limiting pin 637 out of the limiting hole 638, achieving quick disassembly and assembly.

[0037] When using a composite brazing drill bit according to this embodiment, before using the device, the equipment is first installed. The mounting plate 1 is fixedly connected to the output shaft end of the drive device driving the rotating disk through the mounting holes 4 arranged in a ring at equal intervals, thereby realizing the assembly of the entire composite brazing drill bit and the drive device, providing the conditions for the drill bit to obtain rotational power. At the same time, the mounting top plate 35 is connected to the external fixing structure through the mounting holes 4, and the annular tube 34 is stably arranged on the outside of the mounting top plate 1 and the air guide mechanism 3. The input end of the annular tube 34 is connected to the external fan through the external blower connector 37, thereby completing the external auxiliary heat dissipation equipment. Assembly is then performed, followed by the installation of the composite brazed drill bit body 8. First, push the sliding ring 654 in the locking module 65 upwards, causing the sliding ring 654 to move along the outer surface of the mounting spindle 61, driving the locking block 655 to disengage from the inside of the sleeve 656, thereby releasing the lock on the adjusting module 64; then, grasp the handle ball 648 at the outer end of the adjusting rod 647 to drive the connecting ring 645 to rotate. The connecting ring 645 drives the movable ring 644 to rotate in the annular groove 642 and compress the torsion spring 643. When the movable ring 644 rotates, it drives the bevel gear ring 646 to rotate synchronously. The bevel gear ring 646 meshes with the bevel gear 632 in the limiting module 63 to transmit the rotational power to the bevel gear 632; Gear 632 rotates, driving lead screw 634 to rotate inside outer rail 633. Lead screw 634 drives slider 635 to move along outer rail 633 via threaded transmission. Slider 635 drives limit arm 636 and limit pin 637 to move outward, causing limit pin 637 to disengage from the inner area of ​​hexagonal holder 62. Then, hexagonal pin 5 is aligned with hexagonal holder 62 and inserted. Handle ball 648 is released, torsion spring 643 returns from compression, driving movable ring 644 to rotate in the opposite direction. Movable ring 644 drives bevel gear ring 646 to reset via connecting ring 645. Bevel gear ring 646 drives bevel gear 632 to rotate in the opposite direction, thereby causing lead screw 634 to rotate in the opposite direction. Slider 635 drives limit arm 636 to move outward. The pin 637 moves inward until the limiting pin 637 is inserted into the limiting hole 638 on the outside of the hexagonal pin 5; finally, the sliding ring 654 is released, and the sliding ring 654 moves down along the mounting shaft 61 under the action of gravity and the magnetic attraction of the magnet at the end of the locking block 655. The locking block 655 is inserted into the sleeve 656. The connecting ring 645 is limited by the attraction between the magnet and the metal sleeve 656, thereby locking the adjustment module 64 and completing the stable installation of the hexagonal pin 5, the connecting rod 7 and the composite brazed drill bit body 8. The inner cavity of the hexagonal chuck 62 and the hexagonal pin 5 are both regular hexagons, which can bear the torque of the composite brazed drill bit body 8 when the drill bit rotates, and avoid relative sliding. After equipment installation, the drilling and heat dissipation stage begins. The drive unit is activated, and via the mounting plate 1, it drives the connecting column 2, air guide mechanism 3, mounting mechanism 6, hexagonal column 5, connecting rod 7, and composite brazed drill bit body 8 to rotate synchronously. The drill spindle 83 in the composite brazed drill bit body 8 drives the drill cutting blade 84 to rotate, performing drilling operations on the workpiece. Waste generated during drilling is discharged through the discharge guide chute 85. During this process, the air guide mechanism 3 simultaneously achieves active heat dissipation. The connecting shaft 31 in the air guide mechanism 3 rotates with the connecting column 2, and the air guide plates 33 around the connecting shaft 31 rotate synchronously at high speed. The air guide plates 33 are fan-shaped with an arc-shaped cross-section, trapping outside air during rotation and guiding it into the air inlet 32 ​​around the connecting shaft 31. The air inlet 32 ​​is connected to the ventilation main cavity 82 inside the connecting shaft 31, allowing air to enter the ventilation main cavity 82 through the air inlet 32. If the processing scenario requires specific heat dissipation... The system is designed to be relatively high-pressure, with an annular tube 34 fitted to the bottom of the output end of the drive equipment and connected to an external fan. During use, by starting the external fan, the high-pressure airflow generated by the external fan enters the annular tube 34 through the external blower connector 37. The annular tube 34 guides the high-pressure airflow to the exhaust bend 36. The output end of the exhaust bend 36 is tilted towards the guide vane 33, and the high-pressure airflow blows towards the high-speed rotating guide vane 33. Through the rotation and interception of the guide vane 33, the airflow is further assisted to enter the ventilation main chamber 82 through the air inlet 32. At the same time, the ventilation main chamber 82 passes through the connecting rod 7, the inner side of the mounting spindle 61 of the mounting mechanism 6, and the inner side of the drill bit spindle 83, and is connected to the heat dissipation hole 86 inside the discharge guide groove 85. The air entering the ventilation main chamber 82 flows along the chamber and is finally discharged through the heat dissipation hole 86 to the drill bit digging blade 84, where it contacts the drill bit digging blade 84 and the workpiece, carrying away the heat generated during the drilling process and improving the heat dissipation effect. When the composite brazed drill bit body 8 needs to be replaced due to wear, the drill bit replacement stage begins. First, push the sliding ring 654 in the locking module 65 upwards to disengage the locking block 655 from the inside of the sleeve 656, releasing the lock on the adjusting module 64. Then, hold the handle ball 648 to drive the connecting ring 645 to rotate. The connecting ring 645 drives the bevel gear ring 646 to rotate, and the bevel gear ring 646 drives the bevel gear 632 to rotate. This causes the lead screw 634 to drive the slider 635 and the limiting pin 637 to move outwards. The limiting pin 637 moves out of the limiting hole 638 of the hexagonal column 5. The old composite brazed drill bit body 8 can be disassembled by removing the hexagonal post 5 from the hexagonal chuck 62. Then, the new composite brazed drill bit body 8 is installed. The installation steps are the same as the initial installation steps. Align the hexagonal post 5 of the new composite brazed drill bit body 8 with the hexagonal chuck 62 and insert it. Release the handle ball 648 to reset the torsion spring 643 and drive the limit pin 637 to insert into the limit hole 638. Then release the sliding ring 654 to insert the chuck block 655 into the chuck sleeve 656 to lock and fix it, thus completing the installation of the new drill bit. Throughout the entire process, the various structures of this device work together. The mounting plate 1 ensures a stable connection between the device and the drive equipment, preventing shaking during rotation and ensuring the stability of the processing. The mounting plate 35 fixes the annular tube 34 through the mounting holes 4, preventing the annular tube 34 from shifting under the action of high-pressure airflow and ensuring the stable operation of the external auxiliary heat dissipation function. The hexagonal bracket 62 and the hexagonal post 5 fit together in a regular hexagonal shape, effectively bearing torque and preventing slippage when the drill bit rotates. The limiting pin 637 in the limiting module 63... In conjunction with the limiting hole 638 and the locking effect of the locking module 65, the composite brazed drill bit body 8 is further ensured to remain stable during processing, improving assembly stability and preventing processing accuracy from being affected by unstable assembly. This technical solution, by setting the automatic reset function of the torsion spring 643 of the adjustment module 64 and the magnetic locking function of the locking module 65, eliminates the need for complex threaded installation procedures, greatly simplifying the installation steps. Furthermore, no additional tools are required when replacing the drill bit; disassembly can be completed simply by pushing the sliding ring 654 to unlock and rotating the handle ball 648. This device eliminates the need for complex thread tightening or disassembly operations, significantly shortening drill bit replacement time, ensuring continuous drilling operations, and effectively improving overall processing efficiency. It solves the problem of cumbersome and time-consuming drill bit replacement and disassembly steps in existing technologies. Simultaneously, by setting up a multi-path heat dissipation structure, combined with the air guide mechanism 3, the main ventilation chamber 82, heat dissipation holes 86, and external auxiliary heat dissipation equipment, it solves the problem of heat dissipation holes 86 being easily blocked, leading to heat dissipation failure in existing technologies. Even when the drill bit penetrates deep into the workpiece, the main ventilation chamber 82 and heat dissipation holes 86 can still dissipate heat through internal airflow. The cooperation of the external fan with the annular pipe 34 and the exhaust bend 36 further improves heat dissipation efficiency, meeting the heat dissipation requirements of deep hole machining or long-term continuous machining. The heat dissipation holes 86 are located inside the discharge guide groove 85, which does not affect waste material discharge and allows air to directly reach the drill bit's cutting blade 84, specifically removing heat from the cutting area, reducing drill bit wear and edge chipping caused by high temperatures, and extending drill bit lifespan. This device is more suitable for the current machining industry's demand for efficient and stable processing. It should be noted that during the application of this device, an external water pump structure can be connected to the annular pipe 34 to assist in water supply. The coolant is discharged through the annular pipe 34 and the exhaust bend 36. When the coolant is sprayed to the air guide plate 33, it can also be discharged towards the ventilation main cavity 82 through the air guide plate 33, so that the liquid enters the heat dissipation hole 86 to the composite brazed drill bit body 8 to achieve the function of water cooling. It should be further explained that the key components of the composite brazed drill bit body 8 are designed with specific materials. Among them, the fixing seat 81 and the drill spindle 83 are made of 40Cr alloy structural steel. After quenching and tempering, this material has a tensile strength of over 800MPa and a yield strength of over 600MPa, possessing excellent comprehensive mechanical properties. It can withstand the continuous torque and impact force during drilling, preventing the spindle from bending or breaking. Furthermore, the surface hardening treatment can increase the surface hardness to HRC50-55, enhancing wear resistance and extending the service life of the spindle. The drill bit's cutting blade 84 employs a composite brazed structure of cemented carbide and high-speed steel. The working cutting edge is made of WC-Co cemented carbide, with WC content exceeding 90% and Co content controlled at 6-8%. This cemented carbide achieves a hardness of HRA88-92 and a compressive strength exceeding 4000MPa. When facing difficult-to-machine materials such as cast iron and stainless steel, it effectively resists cutting wear and reduces edge chipping. The base portion connecting the cutting blade to the drill bit spindle 83 is made of W6Mo5Cr4V2 high-speed steel, which has a red hardness of [missing information]. At 600℃, it can form a strong metallurgical bond with cemented carbide during brazing, while also possessing a certain degree of toughness to buffer cutting impact and prevent the cutter blade from breaking due to excessive brittleness. The inner walls of the discharge guide groove 85 and the heat dissipation hole 86 are made of nitrided 304 stainless steel. 304 stainless steel itself has good corrosion resistance, which can prevent metal debris generated during drilling from mixing with coolant and causing rust on the guide groove and hole walls. After nitriding, a nitrided layer with a thickness of 5-10μm is formed on the surface, increasing the hardness to HV800-100. 0, which can reduce the friction loss between the waste material and the guide groove when the waste material is discharged, while ensuring that the inner wall of the heat dissipation hole 86 is smooth, reducing the flow resistance of air or coolant, and improving heat dissipation and chip removal efficiency; the connecting rod 7 is made of 20CrMnTi alloy carburized steel. After carburizing and quenching treatment, the surface hardness of this material can reach HRC58-62, and the core hardness is maintained at HRC30-35. It has excellent surface wear resistance, can withstand the friction and torque when it is in contact with the mounting mechanism 6, and has sufficient core toughness to prevent the connecting rod 7 from brittlely breaking during power transmission.

[0038] This embodiment also provides a drilling method, including the following steps: Step 1: The mounting plate 1 is fixedly connected to the output shaft end of the drive device that drives the rotating turntable through the mounting hole 4 on it; the mounting plate 35 is connected to the external fixed structure through the mounting hole 4 on it, and the annular tube 34 is arranged on the outside of the mounting plate 1 and the air guide mechanism 3. The input end of the annular tube 34 is connected to the external fan through the external blower connector 37. Step 2: Push the sliding ring 654 in the locking module 65 upwards to disengage the locking block 655 from the inside of the sleeve 656; hold the handle ball 648 at the outer end of the adjusting rod 647 to drive the connecting ring 645 to rotate. The connecting ring 645 drives the movable ring 644 to rotate and compresses the torsion spring 643. The movable ring 644 drives the bevel ring 646 to rotate. The bevel ring 646 meshes with the bevel gear 632 to drive the lead screw 634 to rotate. The lead screw 634 drives the slider 635, the limiting arm 636, and the limiting pin 637 to move outwards; insert the hexagonal column 5 into the hexagonal seat 62, release the handle ball 648, and the torsion spring 643 returns to its original position, causing the movable ring 644 and the bevel ring 646 to reset. The bevel gear 632 drives the lead screw 634 to rotate in the opposite direction, and the limiting pin 637 inserts into the limiting hole 638 on the outside of the hexagonal column 5; release the sliding ring 654 to allow the locking block 655 to insert into the inside of the sleeve 656. Step 3: Start the drive equipment. The drive equipment drives the connecting column 2, air guide mechanism 3, installation mechanism 6, hexagonal column 5, connecting rod 7 and composite brazed drill bit body 8 to rotate synchronously through the mounting plate 1. The drill bit spindle 83 drives the drill bit digging blade 84 to drill the workpiece. Waste material is discharged through the discharge guide 85. Step 4: The air guide mechanism 3 rotates with the connecting column 2, and the air guide plate 33 on the side of the connecting shaft 31 rotates to trap the air. The air enters the main ventilation chamber 82 through the air inlet 32. If it is necessary to enhance heat dissipation, the external fan is started. The high-pressure airflow enters the annular pipe 34 through the external blower connector 37, and blows through the exhaust bend 36 to the air guide plate 33, assisting the air to enter the main ventilation chamber 82. The air flows along the main ventilation chamber 82 and is discharged through the heat dissipation hole 86 to the drill bit cutting blade 84. Step 5: Push the sliding ring 654 in the locking module 65 upwards to disengage the locking block 655 from the inside of the sleeve 656; hold the handle ball 648 to drive the connecting ring 645 to rotate, the connecting ring 645 drives the bevel gear ring 646 to rotate, the bevel gear ring 646 drives the bevel gear 632 to rotate, the lead screw 634 drives the slider 635, the limiting arm 636 and the limiting pin 637 to move outwards, and the limiting pin 637 disengages from the limiting hole 638 of the hexagonal column 5; pull the hexagonal column 5 out of the hexagonal clasp 62 to complete the disassembly of the old composite brazed drill bit body 8; Step 6: Align the hexagonal post 5 of the new composite brazed drill bit body 8 with the hexagonal clasp 62 and insert it. Release the handle ball 648 to reset the torsion spring 643, which will drive the limit pin 637 to insert into the limit hole 638. Release the sliding ring 654 to insert the clasp 655 into the clasp 656 to lock and fix it, thus completing the installation of the new composite brazed drill bit body 8.

[0039] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A composite brazing drill bit, characterized in that, include: The mounting plate (1) has a connecting column (2) fixedly installed at its bottom. The bottom of the connecting column (2) is integrally formed with a guide mechanism (3). The bottom of the guide mechanism (3) is fixedly installed with an installation mechanism (6). The mounting plate (1) has mounting holes (4) arranged in a ring at equal intervals. The mounting holes (4) on the mounting plate (1) are used to install the mounting plate (1) onto the output shaft end of the drive device that drives the rotating turntable. A hexagonal column (5) is installed at the bottom of the air guide mechanism (3) via an installation mechanism (6). A connecting rod (7) is welded to the bottom of the hexagonal column (5). A composite brazing drill bit body (8) is fixedly installed at the bottom end of the connecting rod (7). The installation mechanism (6) is used to install the connecting rod (7) and the composite brazing drill bit body (8) at its bottom. The air guide mechanism (3) is used to guide external air into the interior of the composite brazing drill bit body (8) to achieve heat dissipation. A fixed base (81) and a ventilation main cavity (82) are provided. The fixed base (81) is integrally formed and installed at the bottom of the connecting rod (7). A drill spindle (83) is fixedly installed at the bottom of the fixed base (81). Drill cutting blades (84) are welded and installed at equal intervals in a ring at the lower end of the outer surface of the drill spindle (83). Discharge guide grooves (85) are evenly spaced at the gaps between the drill cutting blades (84) on the outer surface of the drill spindle (83). The interior is provided with heat dissipation holes (86). The ventilation main cavity (82) is located in the middle of the inner side of the connecting rod (7), the mounting mechanism (6) and the drill spindle (83). The heat dissipation holes (86) and the ventilation main cavity (82) are connected. Each ventilation main cavity (82) is interconnected. The air guiding mechanism (3) is used to guide the external airflow into the ventilation main cavity (82) and flow to each heat dissipation hole (86) for discharge, so as to realize that the air can quickly enter the drill cutting blade (84) to achieve the heat dissipation effect.

2. The composite brazing drill bit according to claim 1, characterized in that, Also includes: The connecting shaft (31) is integrally formed at the bottom of the connecting column (2). The mounting mechanism (6) is located at the bottom end of the connecting shaft (31). The ventilation main cavity (82) in the air guiding mechanism (3) is opened in the middle of the connecting shaft (31). The connecting shaft (31) is used to connect the load-bearing mounting mechanism (6). An air inlet (32) is arranged in a ring at equal intervals around the connecting shaft (31). The air inlet (32) is connected to the ventilation main cavity (82) located inside the connecting shaft (31). The air inlet (32) is used to introduce the outside airflow into the ventilation main cavity (82) so as to realize the air flow between the ventilation main cavity (82) and the heat dissipation hole (86) to achieve the heat dissipation effect.

3. A composite brazing drill bit according to claim 2, characterized in that, Also includes: The air guide plate (33) is welded and installed on the periphery of the connecting shaft (31) in a ring with equal spacing. The air guide plate (33) is set on the outside of the air inlet (32). The air guide plate (33) is used to guide the air during the rotation of the connecting shaft (31). When the connecting shaft (31) is in a high-speed rotation state, it drives the air guide plate (33) to rotate quickly. The air guide plate (33) is fan-shaped and the cross section is arc-shaped. In the rotation state, it can quickly intercept the air and quickly fill the air inlet (32). Finally, it is discharged from the heat dissipation hole (86) through the ventilation main cavity (82) to achieve the effect of air circulation heat dissipation and heat exchange.

4. A composite brazing drill bit according to claim 3, characterized in that, Also includes: An annular tube (34) is fitted on the outside of the mounting plate (1). The bottom of the annular tube (34) is provided with exhaust bends (36) arranged in a ring at equal intervals. The output end of the exhaust bends (36) is inclined towards the guide plate (33). An external blower connector (37) is fixedly installed at the input end of the annular tube (34). The annular tube (34) is connected to an external fan through the external blower connector (37). The annular tube (34) is used to guide the high-pressure airflow of the external fan through the exhaust bends (36) to the guide plate (33). The high-pressure airflow is poured into the air inlet (32) through the high-speed rotating guide plate (33) to achieve heat dissipation. The mounting plate (35) is welded to the top of the annular tube (34) with equal spacing in a ring. The outer end of the mounting plate (35) is provided with mounting holes (4). The mounting plate (35) and the mounting holes (4) are used to install the annular tube (34) to ensure that the annular tube (34) can be stably arranged on the outside of the mounting plate (1) and the air guide plate (33).

5. A composite brazing drill bit according to claim 1, characterized in that, Also includes: The mounting spindle (61) is welded to the bottom of the connecting shaft (31). The ventilation main cavity (82) located in the mounting mechanism (6) is opened in the middle of the inner side of the mounting spindle (61). A hexagonal bracket (62) is fixedly installed at the bottom of the mounting spindle (61). The hexagonal column (5) is inserted into the inner side of the hexagonal bracket (62). Limiting modules (63) are fixedly installed in a ring at equal intervals around the periphery of the hexagonal bracket (62). An adjustment mechanism is installed in the middle of the mounting spindle (61). The module (64) is connected to the adjustment module (64) and the limiting module (63) in a transmission connection. The adjustment module (64) is used to adjust the limiting module (63) to limit the installation of the hexagonal column (5) at the bottom. The inner cavity of the hexagonal bracket (62) and the hexagonal column (5) are both regular hexagons, which are used to bear the torque during the rotation of the composite brazing drill bit body (8). The ventilation main cavity (82) in the mounting spindle (61) is connected to the ventilation main cavity (82) of the hexagonal column (5) and the connecting rod (7). A locking module (65) is sleeved and installed on the upper end of the outer surface of the mounting spindle (61). The locking module (65) is used to lock the adjustment module (64). The adjustment module (64) is limited by the locking module (65) to achieve a stable installation of the hexagonal column (5) and its bottom connecting rod (7) and the composite brazed drill bit body (8).

6. A composite brazing drill bit according to claim 5, characterized in that, Also includes: An outer ring sleeve (641) is fixedly installed on the outside of the mounting spindle (61). An annular groove (642) is formed between the outer ring sleeve (641) and the mounting spindle (61). A torsion spring (643) is fixedly connected inside the annular groove (642). A movable ring (644) is fixedly installed at the bottom of the torsion spring (643). The movable ring (644) is rotatably connected inside the annular groove (642). The torsion spring (643) and the movable ring (644) are used to provide torque and elasticity for rotational reset to ensure that the limit module (63) automatically engages the hexagonal column (5). A connecting ring (645) is integrally formed on the outside of the movable ring (644). A beveled ring (646) is fixedly installed at the bottom of the connecting ring (645). The beveled ring (646) is rotatably fitted onto the outer surface of the mounting spindle (61). The beveled ring (646) obtains elastic force through a torsion spring (643) and transmits it to the limiting module (63) to achieve the locking and fixing of the limiting module (63) to the hexagonal column (5).

7. A composite brazing drill bit according to claim 6, characterized in that, Also includes: Adjusting rods (647) are fixedly installed on the outside of connecting ring (645) in a ring-shaped arrangement with equal spacing. A handrail ball (648) is fixedly installed on the outer end of the adjusting rods (647). The adjusting rods (647) and handrail balls (648) together constitute the force application operation part in the disassembly and adjustment process, so as to drive the connecting ring (645) to rotate by gripping, thereby realizing the manual adjustment and disassembly function.

8. A composite brazing drill bit according to claim 7, characterized in that, Also includes: Side arms (631) are fixedly installed on the lower outer side of the hexagonal bracket (62) in a ring with equal spacing. A bevel gear (632) is rotatably connected to the outer end of the side arm (631) near the hexagonal bracket (62). The bevel gear (632) meshes with the bevel ring (646). The bevel gear (632) is used to transmit the rotational power of the bevel ring (646). An outer rail (633) is fixedly installed on the upper outer side of the side arm (631). A lead screw (634) is rotatably connected inside the outer rail (633). A slider (635) is threadedly connected to the outer surface of the lead screw (634). A limit arm (636) is fixedly installed at the bottom of the slider (635). A limit pin (637) is fixedly installed at the lower end of the limit arm (636). The limit pin (637) is used to limit the engagement of the hexagonal pin (5) to realize the installation of the composite brazed drill bit body (8). The limiting holes (638) are arranged in a ring at equal intervals on the outside of the hexagonal column (5). The end of the limiting pin (637) is inserted into the inside of the limiting hole (638). The limiting hole (638) is used to accommodate the limiting pin (637) to realize the snap-fit ​​installation of the hexagonal column (5). The function of the torsion spring (643) is to provide elastic force through the torsion spring (643), so that the limiting pin (637) can be in a compressed state after the adjusting gear ring is twisted to drive it to move outward during installation.

9. A composite brazing drill bit according to claim 8, characterized in that, Also includes: The locking module (65) includes a fixing ring (651), which is fixedly installed on the upper end of the outer surface of the mounting spindle (61). The bottom of the fixing ring (651) is fixedly installed with sleeves (652) arranged in a ring at equal intervals. The inside of the sleeve (652) is slidably connected with a slide rod (653). The bottom of the slide rod (653) is fixedly installed with a sliding ring (654). The sliding ring (654) moves on the upper end of the outer surface of the mounting spindle (61). The bottom of the sliding ring (654) is fixedly installed with a locking block (655) arranged in a ring at equal intervals. The sleeve (656) is fixedly connected to the top of the connecting ring (645) in a ring with equal spacing. The bottom of the card block (655) is inserted into the sleeve (656). The bottom of the card block (655) is provided with a magnet. The card block (655) is inserted into the sleeve (656) by magnetic attraction. The sleeve (656) is made of a metal material that can be attracted by a magnet. The card block (655) is inserted into the sleeve (656) by magnetic attraction to limit the connecting ring (645), so as to achieve the limiting effect on the bevel ring (646) and its meshing bevel gear (632), and ensure that the hexagonal column (5) is securely clamped.

10. A drilling method, applied to a composite brazing drill bit as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Install the top plate (1) and fix it to the output shaft end of the drive device that drives the rotating turntable through the mounting hole (4); install the top plate (35) and connect it to the external fixed structure through the mounting hole (4); place the annular pipe (34) on the outside of the top plate (1) and the air guide mechanism (3); connect the input end of the annular pipe (34) to the external fan through the external blower connector (37); Step 2: Push the sliding ring (654) in the locking module (65) upwards to disengage the locking block (655) from the inside of the sleeve (656); hold the handle ball (648) at the outer end of the adjusting rod (647) to drive the connecting ring (645) to rotate. The connecting ring (645) drives the movable ring (644) to rotate and compress the torsion spring (643). The movable ring (644) drives the bevel gear ring (646) to rotate. The bevel gear ring (646) meshes with the bevel gear (632) to drive the lead screw (634) to rotate. The lead screw (634) carries... The movable slider (635), the limiting arm (636), and the limiting pin (637) move outward; the hexagonal column (5) is inserted into the hexagonal card holder (62), the armrest ball (648) is released, the torsion spring (643) returns to its original position, driving the movable ring (644) and the bevel gear ring (646) to reset, the bevel gear (632) drives the lead screw (634) to rotate in the opposite direction, and the limiting pin (637) is inserted into the limiting hole (638) on the outside of the hexagonal column (5); the sliding ring (654) is released, so that the card block (655) is inserted into the inside of the card sleeve (656); Step 3: Start the drive equipment. The drive equipment drives the connecting column (2), air guide mechanism (3), installation mechanism (6), hexagonal column (5), connecting rod (7) and composite brazed drill bit body (8) to rotate synchronously through the mounting plate (1). The drill bit spindle (83) drives the drill bit digging blade (84) to perform drilling operations on the workpiece. Waste material is discharged through the discharge guide groove (85). Step 4: The air guide mechanism (3) rotates with the connecting column (2), and the air guide plate (33) on the side of the connecting shaft (31) rotates to trap the air. The air enters the main ventilation chamber (82) through the air inlet (32). If heat dissipation needs to be enhanced, the external fan is started. The high-pressure airflow enters the annular pipe (34) through the external blower connector (37), and blows through the exhaust bend (36) to the air guide plate (33) to assist the air in entering the main ventilation chamber (82). The air flows along the main ventilation chamber (82) and is discharged through the heat dissipation hole (86) to the drill bit cutting blade (84). Step 5: Push the sliding ring (654) in the locking module (65) upwards to disengage the locking block (655) from the inside of the sleeve (656); hold the handle ball (648) to drive the connecting ring (645) to rotate, the connecting ring (645) drives the bevel gear ring (646) to rotate, the bevel gear ring (646) drives the bevel gear (632) to rotate, the lead screw (634) drives the slider (635), the limiting arm (636) and the limiting pin (637) to move outwards, and the limiting pin (637) disengages from the limiting hole (638) of the hexagonal column (5); pull the hexagonal column (5) out of the hexagonal clasp (62) to complete the disassembly of the old composite brazed drill bit body (8); Step 6: Align the hexagonal post (5) of the new composite brazed drill bit body (8) with the hexagonal clasp (62) and insert it. Loosen the handle ball (648) to reset the torsion spring (643) and drive the limit pin (637) to insert into the limit hole (638). Loosen the sliding ring (654) to insert the clasp (655) into the clasp (656) to lock and fix it, thus completing the installation of the new composite brazed drill bit body (8).

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