High-strength impact-resistant drill bit and processing method thereof

Abstract

The high-strength impact-resistant drill bit comprises a mounting frame, a driving mechanism is fixedly mounted at the bottom of the mounting frame, a buffering mechanism is fixedly mounted at the rotating end of the driving mechanism, and a hollow threaded seat is fixedly mounted at the bottom of the buffering mechanism; the bottom of the hollow threaded seat is provided with a drill bit module through a bolt, the top of the drill bit module communicates with the interior of a buffer mechanism through the hollow threaded seat, the top of the buffer mechanism communicates with the output end of a driving mechanism, and the drill bit module and the one-way discharging and conveying mechanism cooperatively operate through the buffer mechanism. Therefore, the impact resistance and efficient heat dissipation requirements can be considered in the use period, and the effect of comprehensively improving the operation performance of the device is further achieved. The whole structure does not need a complex auxiliary device, operation stability and continuity are guaranteed while layout is simplified, the service life of the drill bit is prolonged, drilling precision is improved, operation efficiency is improved, and manufacturing cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of drill bit technology, and in particular to a high-strength impact-resistant drill bit and its processing method. Background Technology

[0002] In various fields such as machining, mining, and construction, drill bits are core cutting tools whose performance directly determines processing efficiency, processing quality, and operating costs. Currently, conventional drill bits widely used in the market generally suffer from inherent problems such as poor heat dissipation and insufficient assembly stability in their brazed joint structures. This technical bottleneck has become a key factor restricting the improvement of the overall performance of drill bits.

[0003] In high-speed cutting and drilling operations, the brazed joints of drill bits generate a large amount of heat due to cutting friction. Poor heat dissipation performance makes it difficult for the heat to dissipate quickly and causes it to accumulate continuously, resulting in a sharp increase in the overall temperature of the drill bit. Excessive temperature not only accelerates the wear of the drill bit's cutting edge but also easily leads to failures such as cutting edge chipping and material performance degradation, significantly shortening the lifespan of the drill bit, increasing the frequency of tool replacement and operating costs. At the same time, excessive temperature also affects the dimensional accuracy of the drill hole and the surface quality of the hole wall, leading to increased machining errors and failing to meet the requirements of high-precision machining. This, in turn, restricts the improvement of overall machining efficiency and brings many inconveniences to actual production operations.

[0004] To address the aforementioned heat dissipation challenges, relevant technical fields have conducted targeted research and proposed some improved design solutions. For example, Chinese utility model patent with publication number "CN208961065U" discloses a brazed tooth drill bit. This drill bit integrates the drill bit body and the drill shank by brazing, and opens multiple connecting holes on the edge of the tooth cutting edge of the drill bit body. The aim is to achieve passive heat dissipation using the connecting holes, while also facilitating the coolant to reach the tooth cutting edge area directly through the connecting holes, thereby enhancing the heat dissipation effect and improving drilling efficiency.

[0005] However, although the improved drill bit has achieved some optimization in heat dissipation performance, it still reveals obvious structural defects in practical applications, making it difficult to adapt to the needs of use under complex working conditions. On the one hand, the drill bit lacks the necessary buffer structure and does not have impact buffering function. When the drill bit is performing drilling operations, in order to ensure the drilling effect, it is usually necessary to frequently adjust the extension and retraction of the drill bit. During each extension and retraction, the drill bit will come into contact with the working surface and impact. The instantaneous impact pressure lacks the unloading effect of the buffer structure, which can easily lead to breakage failure at the brazed joint or the body of the drill bit, seriously affecting the continuity and safety of the operation. On the other hand, during the operation of the drill bit, the coolant can only be passively delivered through the preset connecting hole. It cannot achieve precise pumping of coolant during the moment of extension and retraction of the drill bit, and requires an additional coolant delivery structure. This not only increases the complexity of the equipment and manufacturing cost, but also makes it difficult to achieve the coordinated cooperation of heat dissipation and buffering action, and cannot fundamentally solve the problem of the stability and durability of the drill bit under complex working conditions. Summary of the Invention

[0006] To address the aforementioned problems, this invention proposes a high-strength impact-resistant drill bit and its processing method, which can more accurately solve the problems described above.

[0007] This invention is achieved through the following technical solution: This invention proposes a high-strength impact-resistant drill bit, including a mounting frame. A drive mechanism is fixedly mounted on the bottom of the mounting frame. A buffer mechanism is fixedly mounted on the rotating end of the drive mechanism. A hollow threaded seat is fixedly mounted on the bottom of the buffer mechanism. A drill bit module is bolted to the bottom of the hollow threaded seat. The top of the drill bit module is connected to the interior of the buffer mechanism through the hollow threaded seat. The top of the buffer mechanism is connected to the output end of the drive mechanism. The buffer mechanism includes an annular chassis, which is fixedly installed at the bottom output rotation end of the drive mechanism. A buffer piston sleeve is fixedly installed at the bottom of the annular chassis. An anti-impact buffer spring is fixedly installed on the inner side of the buffer piston sleeve. A piston plate is fixedly installed at the bottom of the anti-impact buffer spring. An outer unidirectional discharge assembly is fixedly installed at the bottom of the piston plate. An inner unidirectional discharge module is fixedly installed at the top of the buffer piston sleeve.

[0008] Furthermore, the internal unidirectional conveying module includes an upper connecting hole and a hinge seat. The upper connecting hole is located in the middle of the annular chassis, and the top of the upper connecting hole is connected to the drive mechanism. The hinge seat is fixedly installed on one side of the upper end of the buffer piston sleeve. An upper sealing plate is hinged to the bottom of the hinge seat. An upper return spring is fixedly installed on the top of the upper sealing plate away from the hinge seat in an arc shape with equal intervals. The top of the upper return spring is fixedly connected to the bottom of the annular chassis.

[0009] Furthermore, the internal cavity of the buffer piston sleeve has a regular hexagonal cross-sectional shape, and the overall cross-sectional shape of the piston plate is also a regular hexagonal shape.

[0010] Furthermore, the external unidirectional discharge assembly includes a connecting column, which is fixedly connected to the bottom of the piston plate. The connecting column is hollow, and its top is connected to the buffer piston sleeve through the piston plate. A unidirectional sealing assembly is fixedly installed at the upper end of the cavity of the connecting column.

[0011] Furthermore, the one-way sealing assembly includes an annular groove and a conical groove. The annular groove is formed at the top of the cavity of the connecting column. A lower return spring is fixedly installed at the bottom of the annular groove. A sealing base plate is fixedly installed at the bottom of the lower return spring. A conical sealing filler block is fixedly installed at the top of the sealing base plate. The conical groove is formed at the middle of the top of the cavity of the connecting column. The conical groove is located inside the annular groove. The conical sealing filler block is inserted into the interior of the conical groove. The top of the conical groove is connected to the interior of the buffer piston sleeve through the piston plate.

[0012] Furthermore, the drive mechanism includes a mounting plate, which is fixedly mounted on the bottom of the mounting frame. A drive assembly is fixedly mounted on one side of the mounting plate, and a transmission assembly is fixedly mounted on the bottom of the mounting plate. The drive assembly and the transmission assembly are meshed together.

[0013] Furthermore, the drive assembly includes a side plate, which is fixedly mounted on one side of the mounting plate. A drive motor is fixedly mounted on the top outer end of the side plate, a drive gear is fixedly mounted on the bottom of the side plate, and a driven gear is fixedly mounted on the bottom of the side plate. The drive gear and the driven gear are meshed together.

[0014] Furthermore, the transmission assembly includes a rotary joint, which is rotatably connected to the center of the mounting plate. A transmission gear is fixedly mounted on the lower end of the outer surface of the rotary joint. The bottom of the transmission gear is fixedly connected to the top of the annular chassis. The transmission gear and the driven gear are meshed. The top of the buffer piston sleeve passes through the transmission gear and communicates with the bottom of the rotary joint. A coolant delivery pipe is fixedly mounted on the top input end of the rotary joint. A mounting flange is fixedly mounted on the outer end of the coolant delivery pipe. A mounting flange is also fixedly mounted on the top of the mounting bracket. A support side frame is fixedly mounted on the outer side of the mounting plate. The annular chassis is rotatably connected to the inner side of the support side frame.

[0015] Furthermore, the drill bit module includes a drill bit spindle, and a cavity is also formed on the inner side of the drill bit spindle. The drill bit spindle is bolted to the bottom of the hollow threaded seat. The cavity inside the drill bit spindle is connected to the hollow threaded seat. A drill bit base is fixedly installed at the bottom of the drill bit spindle. Drill bit blades are fixedly installed on the outer surface of the drill bit base in a ring at equal intervals. Cooling fluid guide holes are formed at equal intervals on the drill bit blades. The input end of the cooling fluid guide holes is connected to the hollow threaded seat through the cavity inside the drill bit spindle. A discharge guide groove is provided at the gap between each drill bit blade.

[0016] A method for treating high-strength impact-resistant drill bits includes the following steps: Step 1: Use a CNC lathe to machine the rotary joint and coolant delivery pipe, a CNC milling machine to machine the transmission gear and support side frame, and a stamping machine to machine the installation flange, thus completing the machining of transmission component parts and accessories; Step 2: The drill spindle is machined using a CNC lathe, the drill body and discharge guide groove are machined using a CNC milling machine, the drill blade is machined using a wire EDM machine, and the coolant guide holes are machined on the drill blade using a drilling machine to complete the production of the drill module parts. Step 3: Fix the transmission gear to the lower end of the outer surface of the rotary joint, connect the annular base to the bottom of the transmission gear, and then rotate the annular base to assemble it inside the support side frame. Step 4: Rotate the rotary joint to the center of the mounting plate, so that the drive gear meshes with the driven gear, fix the coolant delivery pipe to the top input end of the rotary joint, and fix the mounting flange to the outer end of the coolant delivery pipe and the top of the mounting bracket respectively. Step 5: Fix the drill bit blades to the surface of the drill bit body, connect the drill bit body to the bottom of the drill bit spindle, and install the drill bit spindle to the bottom of the hollow threaded seat with bolts to ensure that the drill bit spindle cavity is connected to the inside of the hollow threaded seat. Step 6: Connect the hollow threaded seat to the bottom of the buffer piston sleeve, so that the top of the buffer piston sleeve passes through the transmission gear and connects with the bottom of the rotary joint, thus completing the overall structure assembly; Step 7: Connect the assembled drill bit assembly to the external drilling equipment using the mounting flange.

[0017] The beneficial effects of this invention are: 1. During the application of this technical solution, by setting up a buffer mechanism, the instantaneous impact energy generated by the contact between the drill bit and the working face can be effectively absorbed during use, thereby achieving buffer unloading and preventing the drill bit from breaking due to frequent extension and retraction impacts. This improves the continuity and stability of the device's operation. The buffer mechanism works in conjunction with the unidirectional pumping group, using the pressure change generated by the sliding piston plate and the negative pressure pumping action to form a stable unidirectional pumping force. No additional coolant drive device is required to achieve a continuous supply of coolant, thereby simplifying the equipment structure and reducing manufacturing costs. At the same time, it ensures that the coolant delivery and buffering action are synchronized, improving the coordination during the operation. 2. During the application of this technical solution, the unidirectional discharge mechanism allows for precise control of the coolant's unidirectional flow, preventing backflow and ensuring efficient downward discharge of the coolant directly to the cutting area. This achieves a rapid reduction in operating temperature. The timely application of coolant to the cutting area reduces drill bit wear and chipping, extending drill bit lifespan. It also ensures drilling dimensional accuracy and surface quality. Combined with the discharge guide channel, it promptly removes drilling debris, preventing debris accumulation from affecting operations. This improves drilling efficiency and is suitable for long-term operation under complex conditions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a bottom-view structural diagram of the present invention; Figure 3 This is a top view of the structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the buffer piston sleeve of the present invention; Figure 5 This is a bottom view of the internal structure of the connecting column of the present invention; Figure 6 This is a top view of the internal structure of the connecting column of the present invention; Figure 7 For the present invention Figure 4 A magnified structural diagram at point A; Figure 8 For the present invention Figure 5 A magnified structural diagram at point B; Figure 9 For the present invention Figure 6 A magnified structural diagram at point C.

[0019] In the diagram: 1. Mounting bracket; 2. Drive mechanism; 231. Mounting plate; 232. Drive assembly; 2321. Side plate; 2322. Drive motor; 2323. Drive gear; 2324. Driven gear; 233. Transmission assembly; 2331. Rotary joint; 2332. Transmission gear; 2333. Coolant delivery pipe; 2334. Mounting flange; 2335. Support side frame; 3. Buffer mechanism; 31. Annular chassis; 32. Buffer piston sleeve; 33. Impact-resistant buffer spring; 34. Piston plate; 35. Outer... 351. One-way discharge assembly; 352. Connecting column; 353. One-way sealing assembly; 354. Annular groove; 355. Conical groove; 356. Lower return spring; 37. Sealing base plate; 38. Conical sealing filler block; 39. Inner one-way discharge module; 30. Upper connecting hole; 31. Hinge seat; 32. Upper sealing plate; 33. Upper return spring; 4. Hollow threaded seat; 50. Drill bit module; 51. Drill bit spindle; 52. Drill bit body; 53. Drill bit blade; 54. Coolant guide hole; 55. Discharge guide groove. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0021] A high-strength impact-resistant drill bit includes a mounting frame 1. A drive mechanism 2 is fixedly mounted on the bottom of the mounting frame 1. A buffer mechanism 3 is fixedly mounted on the rotating end of the drive mechanism 2. A hollow threaded seat 4 is fixedly mounted on the bottom of the buffer mechanism 3. A drill bit module 5 is bolted to the bottom of the hollow threaded seat 4. The top of the drill bit module 5 is connected to the inside of the buffer mechanism 3 through the hollow threaded seat 4. The top of the buffer mechanism 3 is connected to the output end of the drive mechanism 2. The buffer mechanism 3 includes an annular chassis 31, which is fixedly mounted on the bottom output rotating end of the drive mechanism 2. A buffer piston sleeve 32 is fixedly mounted on the bottom of the annular chassis 31. An anti-impact buffer spring 33 is fixedly mounted on the inner side of the buffer piston sleeve 32. A piston plate 34 is fixedly mounted on the bottom of the anti-impact buffer spring 33. An outer one-way discharge assembly 35 is fixedly mounted on the bottom of the piston plate 34. An inner one-way discharge module 36 is fixedly mounted on the top of the buffer piston sleeve 32. By setting up the drive mechanism 2, buffer mechanism 3, hollow threaded seat 4, and drill bit module 5, the drive mechanism 2 can drive the buffer mechanism 3 to rotate synchronously during use, thereby driving the hollow threaded seat 4 and the drill bit module 5 at the bottom to operate together. When the buffer mechanism 3 is working, the anti-impact buffer... Spring 33 can elastically deform under the impact pressure during operation, driving piston plate 34 to move along the inner side of buffer piston sleeve 32. In conjunction with the synergistic action of inner unidirectional conveying module 36 and outer unidirectional conveying group 35, it realizes the unidirectional conveying function during the buffering process. Hollow threaded seat 4 provides a stable installation base for drill bit module 5, while ensuring the connectivity between the top of drill bit module 5 and the interior of buffer mechanism 3. The connection design between the top of buffer mechanism 3 and the output end of drive mechanism 2 can form a smooth operation link with the overall structure. This structural setting can effectively alleviate the impact force during operation, reduce the impact damage to the device, and improve the stability during operation. At the same time, through the cooperation of unidirectional conveying group and buffer structure, the buffering and conveying actions are coordinated, further optimizing the operation performance of the device.

[0022] Combination Figures 4-9 As shown, the inner unidirectional conveying module 36 includes an upper connecting hole 361 and a hinge seat 362. The upper connecting hole 361 is located in the middle of the annular chassis 31. The top of the upper connecting hole 361 is connected to the drive mechanism 2. The hinge seat 362 is fixedly installed on the upper side of the buffer piston sleeve 32. An upper sealing plate 363 is hinged to the bottom of the hinge seat 362. An upper return spring 364 is fixedly installed on the side of the top of the upper sealing plate 363 away from the hinge seat 362 in an arc shape with equal intervals. The top of the upper return spring 364 is fixedly connected to the bottom of the annular chassis 31. The cross-sectional shape of the internal cavity of the buffer piston sleeve 32 is a regular hexagon. The overall cross-sectional shape of the piston plate 34 is also a regular hexagon.

[0023] The technical solution in the above-described embodiments of this application, by setting an inner unidirectional discharge module 36 and a buffer piston sleeve 32 with a regular hexagonal cross-section and a piston plate 34, enables unidirectional flow control of the liquid and stable sliding of the piston plate 34 during use. When the inner unidirectional discharge module 36 is working, the upper connecting hole 361 can communicate with the liquid inside the drive mechanism 2. When the pressure inside the buffer piston sleeve 32 changes, the upper sealing plate 363 will rotate around the hinge seat 362, thereby realizing the opening and closing of the upper connecting hole 361. The upper return spring 364 can provide a return spring for the upper sealing plate 363. The system provides a reset force to ensure that the upper sealing plate 363 resets promptly after pressure changes, guaranteeing the reliability of unidirectional flow. The buffer piston sleeve 32 and piston plate 34 adopt a regular hexagonal cross-section design, which can restrict the circumferential rotation of the piston plate 34, allowing the piston plate 34 to move stably only along the axial direction, avoiding offset or jamming during sliding. This structural design can precisely control the unidirectional flow of liquid, prevent backflow, and ensure the stability and smoothness of the piston plate 34 sliding, improving the overall operational reliability of the structure and ensuring the coordinated connection of buffering and liquid delivery actions. Example 2

[0024] Combination Figures 4-9 As shown, the external unidirectional discharge assembly 35 includes a connecting column 351, which is fixedly connected to the bottom of the piston plate 34. The connecting column 351 is hollow, and its top is connected to the piston plate 34 and the buffer piston sleeve 32 through the piston plate 34. A unidirectional sealing assembly 352 is fixedly installed at the upper end of the cavity of the connecting column 351. The unidirectional sealing assembly 352 includes an annular groove 3521 and a conical groove 3522. The annular groove 3521 is opened at the top of the cavity of the connecting column 351, and the bottom of the annular groove 3521 is fixed. A lower return spring 3523 is fixedly installed. A sealing base plate 3524 is fixedly installed at the bottom of the lower return spring 3523. A conical sealing filler block 3525 is fixedly installed at the top of the sealing base plate 3524. A conical groove 3522 is opened in the middle of the top of the cavity of the connecting column 351. The conical groove 3522 is located inside the annular groove 3521. The conical sealing filler block 3525 is inserted into the inside of the conical groove 3522. The top of the conical groove 3522 is connected to the buffer piston sleeve 32 through the piston plate 34.

[0025] The technical solution in the above-described embodiments of this application, by setting an external one-way conveying group 35 and a built-in one-way sealing component 352, can cooperate with the internal one-way conveying module 36 during use to achieve directional and precise liquid delivery. The hollow-designed connecting column 351 enables liquid communication between the buffer piston sleeve 32 and the structure below. The one-way sealing component 352 undertakes the on / off control function. The lower reset spring 3523 always provides an upward force to the sealing base plate 3524, driving the conical sealing filling block 3525 to fit into the conical groove 3522, maintaining the initial sealing state. When the pressure inside the buffer piston sleeve 32 changes, the pressure will act on the seal. The base plate 3524 overcomes the force of the lower return spring 3523 and moves downward, causing the conical sealing filler block 3525 to disengage from the conical groove 3522, opening the liquid flow channel and allowing the liquid to be transported downward through the connecting column 351. When the pressure dissipates, the lower return spring 3523 drives the sealing base plate 3524 to reset, and the conical sealing filler block 3525 re-fits into the conical groove 3522 to complete the seal. This structure, in conjunction with the inner unidirectional discharge module 36, can form a complete unidirectional conveying link, effectively preventing liquid backflow, ensuring stable liquid transport in the preset direction, improving the reliability and efficiency of the overall unidirectional conveying, and ensuring smooth synchronous connection between buffering and conveying actions.

[0026] Combination Figures 1-6 As shown, the drive mechanism 2 includes a mounting plate 231, which is fixedly mounted on the bottom of the mounting frame 1. A drive assembly 232 is fixedly mounted on one side of the mounting plate 231, and a transmission assembly 233 is fixedly mounted on the bottom of the mounting plate 231. The drive assembly 232 and the transmission assembly 233 are meshed together. The drive assembly 232 includes a side plate 2321, which is fixedly mounted on one side of the mounting plate 231. A drive motor 2322 is fixedly mounted on the top outer end of the side plate 2321, and a drive gear 2323 and a driven gear 2324 are fixedly mounted on the bottom of the side plate 2321. The drive gear 2323 and the driven gear 2324 are meshed together.

[0027] The technical solution in the above-described embodiments of this application, by setting up the drive mechanism 2 and its subordinate drive component 232 and transmission component 233, enables stable power output and transmission to subsequent structures during use, while providing suitable working conditions for the inner unidirectional conveying module 36. After the drive motor 2322 starts, it drives the drive gear 2323 to rotate. The drive gear 2323 meshes with the driven gear 2324 to smoothly transmit power to the driven gear 2324. Then, through the meshing connection between the driven gear 2324 and the transmission component 233, the power is transmitted to the entire transmission chain. The mounting plate 231 is the drive component 232. The transmission assembly 233 provides a stable mounting platform, while the side plate 2321 provides positioning support for the drive motor 2322, the drive gear 2323, and the driven gear 2324, ensuring precise meshing and smooth transmission of each gear. This structural setup enables efficient power transmission, ensuring the stability and synchronization of subsequent structural operations. This, in turn, creates a stable working environment for the inner unidirectional conveying module 36, allowing it to coordinate with the power operation rhythm to achieve unidirectional liquid conveying control. This avoids affecting the working accuracy of the inner unidirectional conveying module 36 due to unstable power transmission, and improves the reliability of the overall structure's collaborative operation. Example 3

[0028] Combination Figures 1-6 As shown, the transmission assembly 233 includes a rotary joint 2331, which is rotatably connected to the middle of the mounting plate 231. A transmission gear 2332 is fixedly mounted on the lower end of the outer surface of the rotary joint 2331. The bottom of the transmission gear 2332 is fixedly connected to the top of the annular base 31. The transmission gear 2332 and the driven gear 2324 are meshed. The top of the buffer piston sleeve 32 passes through the transmission gear 2332 and communicates with the bottom of the rotary joint 2331. A coolant delivery pipe 2333 is fixedly mounted on the top input end of the rotary joint 2331. A mounting flange 2334 is fixedly mounted on the outer end of the coolant delivery pipe 2333. A mounting flange 2334 is also fixedly mounted on the top of the mounting bracket 1. The mounting plate 231... A support frame 2335 is fixedly installed on the outside. An annular base 31 is rotatably connected to the inside of the support frame 2335. The drill bit module 5 includes a drill bit spindle 51. A cavity is also opened on the inside of the drill bit spindle 51. The drill bit spindle 51 is installed on the bottom of the hollow threaded seat 4 by bolts. The cavity inside the drill bit spindle 51 is connected to the hollow threaded seat 4. A drill bit base 52 is fixedly installed on the bottom of the drill bit spindle 51. Drill bit blades 53 are fixedly installed on the outer surface of the drill bit base 52 in a ring at equal intervals. Cooling fluid guide holes 54 are opened at equal intervals on the drill bit blades 53. The input end of the cooling fluid guide hole 54 is connected to the hollow threaded seat 4 through the cavity inside the drill bit spindle 51. A discharge guide groove 55 is provided at the gap of each drill bit blade 53.

[0029] The technical solution in the above-described embodiments of this application, by setting up the transmission component 233, the drill bit module 5 and supporting structures, enables the coordinated operation of power transmission, coolant delivery and drilling during use. Simultaneously, it forms a highly efficient cooperation with the inner unidirectional discharge module 36. After receiving the power transmitted by the driven gear 2324, the transmission gear 2332 drives the annular chassis 31 and connected structures to rotate synchronously. The rotary joint 2331 can keep the coolant delivery pipe 2333 fixed during the rotation of the transmission component 233, ensuring stable delivery of coolant to the buffer piston sleeve 32, providing a continuous liquid source for the inner unidirectional discharge module 36. The supporting side frame 2335 ensures smooth rotation of the annular chassis 31 and avoids deviation. The coolant, after being regulated by the internal unidirectional conveying module 36, enters the cavity of the drill spindle 51 through the hollow threaded seat 4, and is then transported to the heat dissipation guide hole 54 of the drill blade 53, ultimately acting on the cutting part. The drill blade 53 is responsible for completing the drilling operation, while the discharge guide 55 promptly discharges the debris generated during drilling. The mounting flange 2334 enables a stable connection between the device and external equipment and coolant pipelines. The drill spindle 51 is bolted for easy subsequent maintenance. This structure, in close cooperation with the internal unidirectional conveying module 36, ensures the stability of the directional delivery of coolant and the smooth synchronization of power transmission and drilling operation, thereby improving the continuity and reliability of the overall operation.

[0030] A method for treating high-strength impact-resistant drill bits includes the following steps: Step 1: Use a CNC lathe to machine the rotary joint 2331 and coolant delivery pipe 2333, use a CNC milling machine to machine the transmission gear 2332 and support side frame 2335, and use a stamping machine to machine the mounting flange 2334 to complete the machining of the transmission component 233 parts and accessories. Step 2: The drill spindle 51 is machined using a CNC lathe, the drill body 52 and the discharge guide groove 55 are machined using a CNC milling machine, the drill blade 53 is machined using a wire EDM machine, and the coolant guide hole 54 is machined on the drill blade 53 by the drilling machine, thus completing the production of the drill module 5 parts. Step 3: Fix the transmission gear 2332 to the lower end of the outer surface of the rotary joint 2331, connect the annular base 31 to the bottom of the transmission gear 2332, and then rotate the annular base 31 to be mounted on the inner side of the support frame 2335. Step 4: Rotate the rotary joint 2331 to the middle of the mounting plate 231, so that the transmission gear 2332 meshes with the driven gear 2324, fix the coolant delivery pipe 2333 to the top input end of the rotary joint 2331, and fix the mounting flange 2334 to the outer end of the coolant delivery pipe 2333 and the top of the mounting bracket 1 respectively. Step 5: Fix the drill bit blade 53 to the surface of the drill bit body 52, connect the drill bit body 52 to the bottom of the drill bit spindle 51, and install the drill bit spindle 51 to the bottom of the hollow thread seat 4 with bolts to ensure that the cavity of the drill bit spindle 51 is connected to the inside of the hollow thread seat 4. Step 6: Connect the hollow threaded seat 4 to the bottom of the buffer piston sleeve 32, so that the top of the buffer piston sleeve 32 passes through the transmission gear 2332 and connects with the bottom of the rotary joint 2331, thus completing the overall structure assembly; Step 7: Connect the assembled drill bit assembly to the external drilling equipment via mounting flange 2334.

[0031] The operating principle and advantages of this invention are as follows: During application, the mounting flange 2334 is used to connect the mounting frame 1 to external equipment and the coolant delivery pipe 2333 to the external coolant supply equipment, ensuring the stability of the entire device during operation and providing a stable path for coolant delivery. The support frame 2335 provides limiting support for the annular chassis 31, ensuring that the annular chassis 31 maintains coaxiality when rotating, avoiding offset that could affect transmission accuracy. After the device is started, the drive mechanism 2 begins to operate, and the drive motor 2322 provides power to drive the drive gear 2323 to rotate. The driven gear 2323 meshes with the driven gear 2324 to transmit power, which in turn drives the transmission gear 2332 to rotate. The transmission gear 2332 drives the annular chassis 31 to rotate synchronously, causing the buffer piston sleeve 32 to rotate together with the annular chassis 31. Finally, the power is transmitted to the drill bit module 5, which drives the drill bit module 5 to rotate to carry out drilling operations. The rotary joint 2331 keeps the coolant delivery pipe 2333 fixed during the rotation of the transmission component 233, preventing the coolant delivery pipe 2333 from breaking due to torsion, and at the same time realizing the stable delivery of coolant from the delivery pipe to the interior of the buffer mechanism 3.

[0032] During drilling, the drill bit module 5 contacts the working surface, generating instantaneous impact pressure. The buffer mechanism 3 activates simultaneously, and the anti-impact buffer spring 33 undergoes elastic deformation, causing the piston plate 34 to slide along the internal cavity of the buffer piston sleeve 32. The buffer piston sleeve 32 and piston plate 34 are designed with regular hexagons to prevent circumferential rotation during sliding, ensuring that the piston plate 34 only moves linearly along the axial direction. This guarantees stable buffering action and precise power transmission. When the piston plate 34 slides, the inner unidirectional discharge module 36 and the outer unidirectional discharge group 35 work together to achieve unidirectional pumping of coolant. When the piston plate 34 moves upward, the pressure inside the buffer piston sleeve 32 increases, and the top sealing plate 363 is pressed against the water pressure, sealing the area. The bottom conical sealing filler block 3525 is squeezed by water pressure, overcoming the pressure of the lower return spring 3523 and unfolding. At this time, the water pressure pushes the coolant downward. When the pressure is lost during the extension and contraction process, the anti-impact buffer spring 33 resets, driving the piston plate 34 to move downward. At this time, a negative pressure is formed inside the buffer piston sleeve 32 and a pumping force is generated, which drives the upper sealing plate 363 to overcome the pressure of the upper return spring 364 and unfold, thereby drawing external liquid into the buffer piston sleeve 32. Through the inner one-way discharge module 36 and the outer one-way discharge group 35, it can work with the anti-impact buffer spring 33 and the piston plate 34 to form a one-way pumping force during the buffer extension and contraction process, thereby realizing the function of downward discharge of coolant.

[0033] Under the unidirectional pumping force, the coolant enters the hollow threaded seat 4 through the connecting column 351, then is transported to the drill bit body 52 through the internal cavity of the drill bit spindle 51, and finally reaches the cutting part through the heat dissipation guide hole 54 on the drill bit blade 53. At the same time, the discharge guide groove 55 at the gap of the drill bit blade 53 discharges the drilling debris in time, avoiding debris accumulation that affects the drilling operation. The hollow threaded seat 4 is detachably connected to the drill bit module 5 by bolts, which facilitates the subsequent replacement and maintenance of the drill bit module 5 and ensures the convenience of long-term operation of the device. By setting up an anti-impact buffer spring 33 and a hexagonal buffer piston sleeve 32 and piston plate 34, combined with the cooperation of the inner unidirectional discharge module 36 and the outer unidirectional discharge group 35, the pressure change and sealing action of the piston plate 34 during its up-and-down movement are precisely controlled. This technical solution can effectively absorb impact energy and achieve buffering and unloading when subjected to instantaneous impact pressure. It can also complete the unidirectional delivery of coolant by means of pressure change and negative pressure pumping, avoiding the breakage of the drill bit due to frequent extension and retraction impacts. At the same time, it can ensure a continuous and stable supply of coolant. The coolant reaches the cutting part directly through the heat dissipation guide hole 54, quickly reducing the operating temperature, reducing drill bit edge wear and chipping, and extending the service life of the drill bit. It also ensures the drilling dimensional accuracy and surface quality. The discharge guide 55 promptly discharges debris, further improving drilling efficiency. The rotary joint 2331 ensures stable coolant delivery and avoids pipeline torsion and breakage. The support side frame 2335 ensures transmission accuracy. The cooperation of each structure makes this technical solution suitable for long-term operation under complex working conditions, with significant improvements in operating efficiency, stability and service life.

[0034] Of course, the present invention may have many other embodiments. Based on this embodiment, other embodiments obtained by those skilled in the art without any creative effort are all within the scope of protection of the present invention.

Claims

1. A high-strength impact-resistant drill bit, characterized in that, The device includes a mounting bracket (1), a drive mechanism (2) is fixedly mounted on the bottom of the mounting bracket (1), a buffer mechanism (3) is fixedly mounted on the rotating end of the drive mechanism (2), a hollow threaded seat (4) is fixedly mounted on the bottom of the buffer mechanism (3), a drill bit module (5) is mounted on the bottom of the hollow threaded seat (4) by bolts, the top of the drill bit module (5) is connected to the inside of the buffer mechanism (3) through the hollow threaded seat (4), and the top of the buffer mechanism (3) is connected to the output end of the drive mechanism (2). The buffer mechanism (3) includes an annular chassis (31), which is fixedly installed at the bottom output rotation end of the drive mechanism (2). A buffer piston sleeve (32) is fixedly installed at the bottom of the annular chassis (31). An anti-impact buffer spring (33) is fixedly installed on the inner side of the buffer piston sleeve (32). A piston plate (34) is fixedly installed at the bottom of the anti-impact buffer spring (33). An outer unidirectional discharge assembly (35) is fixedly installed at the bottom of the piston plate (34). An inner unidirectional discharge module (36) is fixedly installed at the top of the buffer piston sleeve (32).

2. The high-strength impact-resistant drill bit according to claim 1, characterized in that, The inner unidirectional conveying module (36) includes an upper connecting hole (361) and a hinge seat (362). The upper connecting hole (361) is located in the middle of the annular chassis (31). The top of the upper connecting hole (361) is connected to the drive mechanism (2). The hinge seat (362) is fixedly installed on the upper side of the buffer piston sleeve (32). The bottom of the hinge seat (362) is hinged to an upper sealing plate (363). The top of the upper sealing plate (363) away from the hinge seat (362) is fixedly installed with an upper return spring (364) arranged in an arc at equal intervals. The top of the upper return spring (364) is fixedly connected to the bottom of the annular chassis (31).

3. A high-strength impact-resistant drill bit according to claim 2, characterized in that, The internal cavity of the buffer piston sleeve (32) is hexagonal in shape, and the overall cross-sectional shape of the piston plate (34) is also hexagonal.

4. A high-strength impact-resistant drill bit according to claim 3, characterized in that, The external unidirectional discharge assembly (35) includes a connecting column (351), which is fixedly connected to the bottom of the piston plate (34). The connecting column (351) is hollow, and the top of the connecting column (351) is connected to the buffer piston sleeve (32) through the piston plate (34). A unidirectional sealing assembly (352) is fixedly installed at the upper end of the cavity of the connecting column (351).

5. A high-strength impact-resistant drill bit according to claim 4, characterized in that, The one-way sealing assembly (352) includes an annular groove (3521) and a conical groove (3522). The annular groove (3521) is opened at the top of the cavity of the connecting column (351). A lower return spring (3523) is fixedly installed at the bottom of the annular groove (3521). A sealing base plate (3524) is fixedly installed at the bottom of the lower return spring (3523). A conical sealing filler block (3525) is fixedly installed at the top of the sealing base plate (3524). The conical groove (3522) is opened at the middle of the top of the cavity of the connecting column (351). The conical groove (3522) is located inside the annular groove (3521). The conical sealing filler block (3525) is inserted into the inside of the conical groove (3522). The top of the conical groove (3522) is connected to the buffer piston sleeve (32) through the piston plate (34).

6. A high-strength impact-resistant drill bit according to claim 5, characterized in that, The drive mechanism (2) includes a mounting plate (231), which is fixedly mounted on the bottom of the mounting frame (1). A drive assembly (232) is fixedly mounted on one side of the mounting plate (231), and a transmission assembly (233) is fixedly mounted on the bottom of the mounting plate (231). The drive assembly (232) and the transmission assembly (233) are meshed together.

7. A high-strength impact-resistant drill bit according to claim 6, characterized in that, The drive assembly (232) includes a side plate (2321), which is fixedly installed on one side of the mounting plate (231). A drive motor (2322) is fixedly installed on the top outer end of the side plate (2321), a drive gear (2323) is fixedly installed on the bottom of the side plate (2321), and a driven gear (2324) is fixedly installed on the bottom of the side plate (2321). The drive gear (2323) and the driven gear (2324) are meshed together.

8. A high-strength impact-resistant drill bit according to claim 7, characterized in that, The transmission assembly (233) includes a rotary joint (2331), which is rotatably connected to the middle of the mounting plate (231). A transmission gear (2332) is fixedly mounted on the lower end of the outer surface of the rotary joint (2331). The bottom of the transmission gear (2332) is fixedly connected to the top of the annular chassis (31). The transmission gear (2332) and the driven gear (2324) are meshed. The top of the buffer piston sleeve (32) passes through the transmission gear (2332). The bottom of the rotating joint (2331) is connected to the top of the rotating joint (2331). A coolant delivery pipe (2333) is fixedly installed at the top input end of the rotating joint (2331). An installation flange (2334) is fixedly installed at the outer end of the coolant delivery pipe (2333). An installation flange (2334) is also fixedly installed at the top of the mounting bracket (1). A support side frame (2335) is fixedly installed on the outer side of the mounting plate (231). The annular base (31) is rotatably connected to the inner side of the support side frame (2335).

9. A high-strength impact-resistant drill bit according to claim 8, characterized in that, The drill bit module (5) includes a drill bit spindle (51), and a cavity is also provided on the inner side of the drill bit spindle (51). The drill bit spindle (51) is installed on the bottom of the hollow threaded seat (4) by bolts. The cavity inside the drill bit spindle (51) is connected to the hollow threaded seat (4). A drill bit base (52) is fixedly installed at the bottom of the drill bit spindle (51). Drill bit blades (53) are fixedly installed on the outer surface of the drill bit base (52) in a ring at equal intervals. Cooling fluid guide holes (54) are provided at equal intervals on the drill bit blades (53). The input end of the cooling fluid guide hole (54) is connected to the hollow threaded seat (4) through the cavity inside the drill bit spindle (51). A discharge guide groove (55) is provided at the gap of each drill bit blade (53).

10. A method for treating high-strength impact-resistant drill bits, using the high-strength impact-resistant drill bit as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Use a CNC lathe to process the rotary joint (2331) and coolant delivery pipe (2333), use a CNC milling machine to process the transmission gear (2332) and support side frame (2335), and use a stamping machine to process the mounting flange (2334) to complete the processing of the transmission component (233) parts and accessories; Step 2: The drill spindle (51) is machined using a CNC lathe, the drill body (52) and discharge guide groove (55) are machined using a CNC milling machine, the drill blade (53) is machined using a wire EDM machine, and the heat dissipation guide hole (54) is machined on the drill blade (53) by the drilling machine, thus completing the production of the drill module (5) parts; Step 3: Fix the transmission gear (2332) to the lower end of the outer surface of the rotary joint (2331), connect the annular base (31) to the bottom of the transmission gear (2332), and then rotate the annular base (31) to the inner side of the support side frame (2335); Step 4: Rotate the rotary joint (2331) to the middle of the mounting plate (231) so that the transmission gear (2332) meshes with the driven gear (2324), fix the coolant delivery pipe (2333) to the top input end of the rotary joint (2331), and fix the mounting flange (2334) to the outer end of the coolant delivery pipe (2333) and the top of the mounting bracket (1) respectively; Step 5: Fix the drill bit blade (53) to the surface of the drill bit body (52), connect the drill bit body (52) to the bottom of the drill bit spindle (51), and install the drill bit spindle (51) to the bottom of the hollow thread seat (4) with bolts to ensure that the cavity of the drill bit spindle (51) is connected to the inside of the hollow thread seat (4); Step 6: Connect the hollow threaded seat (4) to the bottom of the buffer piston sleeve (32), so that the top of the buffer piston sleeve (32) passes through the transmission gear (2332) and connects with the bottom of the rotary joint (2331) to complete the overall structure assembly; Step 7: Connect the assembled drill bit assembly to the external drilling equipment via the mounting flange (2334).

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