A drill bit with efficient cooling function and working method thereof

Abstract

The present invention relates to the field of mechanical processing technology, and discloses a drill bit with an efficient cooling function and a working method thereof, comprising a processing table, an efficient and precise drilling mechanism, a self-adjusting cooling mechanism, and a synchronous oiling and lubricating mechanism; a back plate is fixedly provided on the top rear side of the processing table, the back plate is vertically arranged with respect to the processing table, and a rotating disk is provided on the top of the front side wall of the back plate. By providing an efficient and precise drilling mechanism, when the guide rod moves downward, it drives the positioning plate at the bottom to move downward until the positioning plate abuts against the top of the workpiece, at which time, the guide rod and the movable block slide toward each other, the first spring is compressed, and a downward thrust is generated on the positioning plate, so that the positioning plate clamps and fixes the workpiece in the vertical direction, avoiding deflection of the workpiece during drilling. By providing a guide rod and a positioning hole, it can be ensured that the movement direction of the tool is always on the same vertical line, thereby improving the drilling accuracy of the workpiece and avoiding deflection of the drilling position.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, in particular to a drill bit with a high-efficiency cooling function and a working method thereof. Background Art

[0002] A drill bit is a rotating tool with a cutting tip, primarily used for drilling holes in various materials, including metal, wood, stone, and concrete. The drill bit uses rotation and thrust to push the cutting edges into the workpiece, thereby drilling a hole. During the drilling process, the drill bit must not only possess sufficient hardness and toughness to handle the material being cut, but also maintain stable rotation and an appropriate feed rate to ensure high-quality drilling. Drill bits are primarily made of metal, with common materials including cemented carbide, diamond powder, and high-speed steel. These materials possess wear resistance, impact resistance, and high hardness to meet the drilling requirements of various materials.

[0003] Drill bits use different rotation speeds and motion trajectories depending on the drilling requirements. The heat generated by contact with the workpiece also varies. Existing drill bits struggle to maintain drilling accuracy, and the coolant flow rate during cooling is often fixed, resulting in significant waste and an inability to guarantee cooling effectiveness. This wears the drill bit when in contact with the workpiece, shortening its lifespan and leading to high drilling costs. Therefore, a drill bit with efficient cooling capabilities and a method for operating the same are proposed. Summary of the Invention

[0004] The present invention aims to solve the technical problems that it is difficult for existing drill bits to ensure drilling accuracy when drilling, and the flow rate of coolant during cooling is mostly fixed, which easily causes great waste and cannot guarantee the cooling effect. The drill bit will wear when in contact with the workpiece, and its life is short, resulting in high cost of drilling processing. The present invention provides a drill bit with efficient cooling function and a working method thereof.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] The first solution of the present invention is to provide a drill bit with efficient cooling function, comprising a machining table, an efficient and precise drilling mechanism, a self-adjusting cooling mechanism, and a synchronous oil injection and lubrication mechanism;

[0007] The top end face of the driving member is fixedly provided with a back plate, and the back plate is vertically arranged with respect to the processing table, and the top of the front side wall of the back plate is provided with a rotating disk, and the center of the rotating disk is rotatably connected to the back plate by a rotating shaft, the other end of the rotating shaft extends to the rear side wall of the back plate, and the other end of the rotating shaft is connected to the driving motor, and the rotating disk is arranged parallel to the back plate. The front side wall edge of the rotating disk is rotatably connected When drilling, place the workpiece between the clamps, start the drive motor, and make the rotating shaft start to rotate. When the rotating shaft rotates, it drives the rotating disk to start rotating, so that the movable rod connected to the edge of the rotating disk rotates accordingly, and drives the vertical rod connected to the bottom of the movable rod to start periodic up and down rotation. The workpiece can be drilled efficiently and accurately through the efficient and precise drilling mechanism at the bottom of the vertical rod. When drilling, the flow of coolant can be adaptively adjusted through the self-adjusting cooling mechanism, which improves the cooling effect while reducing the consumption of coolant. The tool can be lubricated by the synchronous oiling and lubrication mechanism to increase the service life of the tool.

[0008] Furthermore, the efficient and precise drilling mechanism includes a rotary motor, the bottom output end of which is connected to a rotary shaft, the rotary shaft being arranged parallel to the vertical rod, the bottom end of which is fixedly provided with a mounting seat, the bottom of which is provided with a tool, the tool including a drill shank and a drill body, the outer side walls of which are fixedly provided with retaining bars on both sides, the bottom of the drill body being provided with a cutting portion, the outer side walls of the drill body being provided with a spiral groove, the bottom of the mounting seat being provided with a mounting slot, the retaining bar matching the cross-sectional shape and size of the mounting slot, and the drill shank being detachably connected to the mounting seat via the retaining bar. When the vertical rod moves downward, the rotary motor and the rotary shaft are driven to rotate downward, and the rotary motor is activated when it moves downward, causing the rotary shaft to begin to rotate as it moves downward. When the rotary shaft moves, it drives the mounting seat and the tool to move synchronously, thereby continuously and efficiently drilling holes in the workpiece at the bottom of the tool.

[0009] Furthermore, the outer side of the mounting seat is provided with an outer ring, the outer side of the outer ring is fixedly provided with an outer sleeve, the outer side wall of the mounting seat is provided with an outer slot, the mounting seat is rotatably connected to the outer ring via the outer slot, the mounting seat, the outer sleeve and the outer ring are coaxially arranged, a connecting frame is symmetrically provided on the rear side of the outer side wall of the outer sleeve, the other end of the connecting frame is fixedly connected to a movable block, the movable block is slidably connected to the front side wall of the back plate, the inner side of the movable block is slidably connected to a guide rod, and the guide rod is arranged parallel to the tool. When the mounting seat moves downward, the outer ring on the outside moves downward synchronously, and when the outer ring moves downward, the connecting frame and the movable block on both sides move downward, and when the movable block moves downward, the guide rod moves downward.

[0010] Furthermore, a positioning plate is fixedly provided at the bottom end of the guide rod, and a positioning hole is provided on the surface of the positioning plate. The positioning hole is located directly below the tool, and a first spring is connected between the positioning plate and the movable block. When the guide rod moves downward, the positioning plate at the bottom moves downward until the positioning plate abuts against the top of the workpiece. At this time, the guide rod and the movable block slide toward each other, and the first spring is compressed, which generates a downward thrust on the positioning plate, so that the positioning plate clamps the workpiece in the vertical direction to prevent the workpiece from deflecting during drilling. As the tool continues to move downward, the tool passes through the positioning hole on the surface of the positioning plate to perform a drilling operation on the workpiece. By providing the guide rod and the positioning hole, it can be ensured that the movement direction of the tool is always on the same vertical line, thereby improving the drilling accuracy of the workpiece and preventing the drilling position from deflecting.

[0011] Furthermore, the self-regulating cooling mechanism includes a coolant inlet pipe, which is vertically mounted on the top of the outer sleeve. A rotating portion is disposed in the middle of the coolant inlet pipe, and a plurality of latching teeth are evenly disposed on the outer wall of the rotating portion. A drive gear is fixedly disposed in the middle of the rotating shaft, and the drive gear meshes with the latching teeth. When the rotating shaft moves, the drive gear on its outer wall begins to rotate. When the drive gear rotates, the rotating portion, which is meshed with the latching teeth, begins to rotate, and coolant is injected into the diversion cavity along the coolant inlet pipe.

[0012] Furthermore, a diversion chamber is defined between the outer sleeve and the outer collar. The bottom of the diversion chamber is provided with a plurality of liquid outlet holes. A plurality of nozzles are evenly distributed on the bottom of the outer sleeve, with the number and position of the nozzles matching the number and position of the liquid outlet holes. The output ends of the nozzles are directed toward the bottom end of the tool. Coolant flows into the diversion chamber, passes through the liquid outlet holes, and is ejected along the nozzles to cool the workpiece and tool.

[0013] Furthermore, a number of baffles are evenly arranged around the axis of the coolant inlet pipe inside the rotating part, and the baffles are arranged perpendicular to the axis of the coolant inlet pipe. A movable bar is fixedly provided on the outer edge of the baffle, and a slide rod is vertically provided in the middle of the movable bar. A movable groove is provided at the connection between the slide rod and the inner wall of the rotating part, and the movable groove is radially arranged along the axis of the coolant inlet pipe. A second spring is connected between the slide rod and the outer end of the movable groove. When the rotating part rotates, it drives the baffle inside it to start rotating. When the baffle rotates, it drives the guide bar on its outer edge to rotate accordingly, generating centrifugal force, causing the slide bar in the center of the guide bar to move outward along the direction of the movable groove, driving the baffle to open. At this time, the second spring is compressed, and it produces elastic force in the opposite direction on the slide bar, so that the coolant flows into the diversion cavity along the channel surrounded by the baffle. When the speed of the tool is faster, the temperature generated during drilling is higher. At this time, the faster the speed of the rotating shaft and the faster the speed of the rotating part, the greater the centrifugal force the baffle is subjected to, the greater the opening range, and the greater the flow rate of the coolant. Therefore, the coolant flow rate can be self-regulated according to the speed of the tool, fully improving the cooling effect, and at the same time reducing the flow rate of the coolant.

[0014] Furthermore, the synchronous oil injection lubrication mechanism includes an oil injection chamber located at the top of the mounting groove, the top end of the drill shank extending into the interior of the oil injection chamber, an upper collar slidably provided around the rotation axis at the top of the mounting seat, a through hole provided inside the upper collar, the output end of the through hole communicating with the oil injection chamber, and an oil injection pipe connected to the top input end of the through hole. Lubricating oil is injected into the oil injection chamber through the oil injection pipe, and the lubricating oil flows into the tool through the oil inlet hole.

[0015] Furthermore, an inner oil chamber is provided inside the drill shank, a plurality of oil inlet holes are provided between the inner oil chamber and the top of the outer wall of the drill shank, an inner hole is provided between the bottom of the inner oil chamber and the inside of the cutting part, an oil outlet hole is provided between the bottom end of the inner hole and the outside of the cutting part, a sealing plate is movably provided inside the oil inlet hole, the sealing plate is vertically arranged to the oil inlet hole, a push-down block is connected to the bottom of the sealing plate, the push-down block is slidably connected to the inside of the drill shank through a lower groove, a side groove is connected to the top of the lower groove facing the side of the inner oil chamber, a side push block is slidably provided inside the side groove, the side push block and the lower push block are slidably connected via an inclined surface, and a third spring is provided between the lower push block and the bottom of the lower groove. When the tool rotates, the side push block inside it is subjected to outward centrifugal force, causing the side push block to slide outward along the side groove. When the side push block moves, it drives the lower push block connected to it by the inclined surface to slide downward along the lower groove. At this time, the third spring is compressed, and when the lower push block moves downward, it drives the top sealing plate to move downward, so that the oil inlet hole is connected, and the lubricating oil flows into the inner oil cavity along the oil inlet hole and then into the inner hole, and finally flows out along the oil outlet hole to the contact point between the cutting part and the workpiece, lubricating the cutting part and reducing the friction between the cutting part and the workpiece, thereby increasing the life of the tool. When the tool stops rotating, the sealing plate is reset under the elastic force of the third spring, sealing the oil inlet hole, and preventing the oil inlet hole from being blocked.

[0016] A second aspect of the present invention is to provide a method for operating a drill bit with an efficient cooling function, the steps comprising:

[0017] S1. When drilling, place the workpiece between the fixtures and start the drive motor to rotate the shaft. The shaft rotates, which drives the rotating disk to rotate, causing the movable rod connected to the edge of the rotating disk to rotate accordingly, driving the vertical rod connected to the bottom of the movable rod to start periodic up and down rotation;

[0018] S2. When the vertical rod moves downward, it drives the rotating motor and the rotating shaft to rotate downward. When the rotating motor moves downward, it is started, so that the rotating shaft starts to rotate while moving downward. When the rotating shaft moves, it drives the mounting seat and the tool to move synchronously, so as to continuously and efficiently drill the workpiece at the bottom of the tool;

[0019] S3, the mounting seat moves downward while driving the outer outer ring to move downward synchronously, the outer ring moves downward while driving the connecting frames and movable blocks on both sides to move downward, the movable blocks move downward while driving the guide rods to move downward, and the guide rods move downward while driving the bottom positioning plate to move downward until the positioning plate abuts against the top of the workpiece, at which time the guide rods and the movable block slide toward each other, the first spring is compressed, and a downward thrust is generated on the positioning plate, so that the positioning plate clamps and fixes the workpiece in the vertical direction to prevent the workpiece from deflecting during drilling;

[0020] S4. As the tool continues to move downward, it passes through the positioning hole on the surface of the positioning plate to punch the workpiece. By providing the guide rod and the positioning hole, the movement direction of the tool can be ensured to always be on the same vertical line, thereby improving the punching accuracy of the workpiece and avoiding deviation of the punching position;

[0021] S5. The rotation shaft drives the driving gear on its outer wall to start rotating. When the driving gear rotates, the rotating part meshed with it through the latch teeth starts rotating. At this time, coolant is injected into the diversion cavity along the coolant inlet pipe;

[0022] S6. When the rotating part rotates, the baffle inside it starts to rotate. When the baffle rotates, the guide bar on its outer edge rotates accordingly, generating centrifugal force, causing the slide bar in the center of the guide bar to move outward along the direction of the movable groove, driving the baffle to open. At this time, the second spring is compressed, generating an elastic force in the opposite direction on the slide bar, causing the coolant to flow into the diversion chamber along the channel surrounded by the baffle, and then be sprayed out through the outlet hole along the nozzle to cool the workpiece and tool;

[0023] S7. When the tool rotates faster, the temperature generated during drilling will be higher. At this time, the faster the rotating shaft rotates, the faster the rotating part rotates, the greater the centrifugal force on the baffle, the wider the opening range, and the greater the coolant flow rate. Therefore, the coolant flow rate can be self-regulated according to the tool rotation speed, fully improving the cooling effect while reducing the coolant flow rate.

[0024] S8. When the tool rotates, the side push block inside it is subjected to outward centrifugal force, causing the side push block to slide outward along the side slot. When the side push block moves, it drives the lower push block, which is slidably connected to it via the inclined surface, to slide downward along the lower slot. At this time, the third spring is compressed, and when the lower push block moves downward, it drives the top sealing plate downward, making the oil inlet hole conductive;

[0025] S9. At this time, lubricating oil is injected into the oil filling chamber through the oil filling pipe. The lubricating oil flows into the inner oil chamber along the oil inlet hole and then into the inner hole. Finally, it flows out along the oil outlet hole to the contact point between the cutting part and the workpiece, lubricating the cutting part and reducing the friction between the cutting part and the workpiece, thereby increasing the life of the tool. When the tool stops rotating, the sealing plate is reset under the elastic force of the third spring, sealing the oil inlet, and avoiding the oil inlet being blocked.

[0026] Beneficial effects of the present invention:

[0027] 1. The drill bit with efficient cooling function of the present invention is provided with an efficient and precise drilling mechanism, so that the mounting seat moves downward and drives the outer outer ring to move downward synchronously. When the outer ring moves downward, it drives the connecting frames and the movable block on both sides to move downward. When the movable block moves downward, it drives the guide rod to move downward. When the guide rod moves downward, it drives the bottom positioning plate to move downward until the positioning plate abuts the top of the workpiece. At this time, the guide rod and the movable block slide toward each other, and the first spring is compressed, which generates a downward thrust on the positioning plate, so that the positioning plate clamps and fixes the workpiece in the vertical direction, avoiding deflection of the workpiece during drilling. By providing the guide rod and the positioning hole, it can be ensured that the movement direction of the tool is always in the same vertical line, thereby improving the drilling accuracy of the workpiece and avoiding deflection of the drilling position.

[0028] 2. The drill bit with efficient cooling function of the present invention is provided with a self-adjusting cooling mechanism. When the rotation speed of the tool is faster, the temperature generated during drilling will be higher. At this time, the faster the rotation speed of the rotating shaft and the faster the rotation speed of the rotating part, the greater the centrifugal force exerted on the baffle, the greater the opening amplitude, and the greater the flow rate of the coolant. Therefore, the flow rate of the coolant can be self-adjusted according to the rotation speed of the tool, thereby fully improving the cooling effect and reducing the flow rate of the coolant at the same time.

[0029] 3. The drill bit with efficient cooling function of the present invention is provided with a synchronous oil injection and lubrication mechanism, so that when the tool rotates, the side push block inside it is subjected to outward centrifugal force, so that the side push block slides outward along the side groove, and when the side push block moves, it drives the lower push block connected to it by the inclined surface to slide downward along the lower groove. At this time, the third spring is compressed, and when the lower push block moves downward, it drives the top sealing plate to move downward, so that the oil inlet hole is conductive. At this time, the lubricating oil flows into the interior of the inner oil cavity along the oil inlet hole and then enters the inner hole, and finally flows out along the oil outlet hole to the contact point between the cutting part and the workpiece, lubricating the cutting part, reducing the friction between the cutting part and the workpiece, thereby increasing the life of the tool. When the tool stops rotating, the sealing plate is reset under the elastic force of the third spring, and the oil inlet hole is sealed, which can prevent the oil inlet hole from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of the drill bit with efficient cooling function;

[0031] Figure 2 This is an enlarged schematic diagram of the structure at point A of the drill bit with efficient cooling function;

[0032] Figure 3 This is a schematic diagram of the cross-sectional structure of the diversion cavity of the drill bit with efficient cooling function;

[0033] Figure 4 This is a schematic diagram of the cross-sectional structure of the rotating part of the drill bit with efficient cooling function;

[0034] Figure 5 This is a schematic diagram of the cross-sectional structure of the mounting base of the drill bit with efficient cooling function;

[0035] Figure 6 This is a schematic diagram of the cross-sectional structure of the tool of the drill bit with efficient cooling function;

[0036] Figure 7 This is a schematic diagram of the internal structure of the oil inlet hole of the drill bit with efficient cooling function.

[0037] Explanation of reference numerals: 1. workbench; 2. bracket; 3. back plate; 4. rotating disk; 5. rotating shaft; 6. movable rod; 7. vertical rod; 8. rotating motor; 9. guide rod; 10. positioning plate; 11. positioning hole; 12. fixture; 13. workpiece; 14. limit block; 15. rotating shaft; 16. mounting seat; 17. driving gear; 18. rotating part; 19. cooling liquid inlet pipe; 20. outer ring; 21. outer sleeve; 22. movable block; 23. connecting frame; 24. first spring; 25. nozzle; 26. tool; 27. Diverter chamber; 28. Liquid outlet; 29. ​​Clamping tooth; 30. Blocking piece; 31. Sliding rod; 32. Movable groove; 33. Second spring; 34. Guide bar; 35. Cutting part; 36. Drill body; 37. Spiral groove; 38. Blocking bar; 39. Mounting groove; 40. Oil filling chamber; 41. Upper collar; 42. Oil filling pipe; 43. Through hole; 44. Inner oil chamber; 45. Oil inlet hole; 46. Inner hole; 47. Oil outlet hole; 48. Sealing plate; 49. Lower push block; 50. Third spring; 51. Side push block; 52. Side slot; 53. Lower slot. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the concept and technical effects of the present invention in conjunction with the embodiments so as to fully understand the purpose, characteristics and effects of the present invention.

[0039] A drill bit with efficient cooling function, comprising a processing table, an efficient and precise drilling mechanism, a self-adjusting cooling mechanism and a synchronous oil injection and lubrication mechanism;

[0040] A back plate 3 is fixedly provided on the top rear side of the processing table, and the back plate 3 is arranged perpendicular to the processing table. A rotating disk 4 is provided on the top of the front side wall of the back plate 3. The center of the rotating disk 4 is rotatably connected to the back plate 3 through a rotating shaft 5. The other end of the rotating shaft 5 extends to the rear side wall of the back plate 3. The other end of the rotating shaft 5 is connected to a driving motor. The rotating disk 4 is arranged parallel to the back plate 3. A movable rod 6 is rotatably connected to the edge of the front side wall of the rotating disk 4. The other end of the movable rod 6 is rotatably connected to a vertical rod 7. The middle of the vertical rod 7 is limited by a limit The positioning block 14 is slidably connected to the back plate 3, the vertical rod 7 is arranged perpendicular to the processing table, the efficient and precise drilling mechanism is arranged at the bottom end of the vertical rod 7, a workpiece 13 is movably arranged at the top center of the processing table, and clamps 12 are movably arranged on both sides of the workpiece 13. The workpiece 13 is located directly above the efficient and precise drilling mechanism, the self-regulating cooling structure is arranged on the outside of the output end of the efficient and precise drilling mechanism, the synchronous oil injection and lubrication mechanism is arranged on the inside of the efficient and precise drilling mechanism, and a plurality of brackets 2 are fixedly arranged at the bottom of the processing table. When drilling, place the workpiece 13 between the clamps 12, start the drive motor, and make the rotating shaft 5 start to rotate. When the rotating shaft 5 rotates, it drives the rotating disk 4 to start rotating, so that the movable rod 6 connected to the edge of the rotating disk 4 rotates accordingly, and drives the vertical rod 7 connected to the bottom of the movable rod 6 to start periodic up and down rotation. The workpiece 13 can be drilled efficiently and accurately through the efficient and precise drilling mechanism at the bottom of the vertical rod 7. During drilling, the flow rate of the coolant can be adaptively adjusted through the self-adjusting cooling mechanism, thereby improving the cooling effect and reducing the consumption of the coolant. The tool 26 can be lubricated by the synchronous oiling and lubrication mechanism to increase the service life of the tool 26.

[0041] The efficient and precise drilling mechanism includes a rotating motor 8, the bottom output end of the rotating motor 8 is connected to a rotating shaft 15, the rotating shaft 15 is arranged parallel to the vertical rod 7, the bottom end of the rotating shaft 15 is fixedly provided with a mounting seat 16, the bottom of the mounting seat 16 is provided with a tool 26, the tool 26 includes a drill shank and a drill body 36, baffles 38 are fixedly provided on both sides of the outer wall of the drill shank, the bottom of the drill body 36 is provided with a cutting portion 35, the outer wall of the drill body 36 is provided with a spiral groove 37, the bottom of the mounting seat 16 is provided with a mounting groove 39, the baffle 38 matches the cross-sectional shape and size of the mounting groove 39, and the drill shank is detachably connected to the mounting seat 16 through the baffle 38. When the vertical rod 7 moves downward, it drives the rotating motor 8 and the rotating shaft 15 to rotate downward. When the rotating motor 8 moves downward, it is started, so that the rotating shaft 15 starts to rotate while moving downward. When the rotating shaft 15 moves, it drives the mounting seat 16 and the tool 26 to move synchronously, and continuously and efficiently drills the workpiece 13 at the bottom of the tool 26.

[0042] An outer ring 20 is sleeved on the outside of the mounting seat 16. An outer sleeve 21 is fixedly provided on the outside of the outer ring 20. An outer sliding groove is formed on the outer wall of the mounting seat 16. The mounting seat 16 is rotatably connected to the outer ring 20 via the outer sliding groove. The mounting seat 16, the outer sleeve 21 and the outer ring 20 are coaxially arranged. A connecting frame 23 is symmetrically provided on the rear side of the outer wall of the outer sleeve 21. The other end of the connecting frame 23 is fixedly connected to a movable block 22, which is slidably connected to the front side wall of the back plate 3. The inside of the movable block 22 is slidably connected to a guide rod 9, which is arranged parallel to the tool 26. When the mounting seat 16 moves downward, the outer ring 20 on the outside moves downward synchronously. When the outer ring 20 moves downward, the connecting frames 23 and the movable block 22 on both sides move downward. When the movable block 22 moves downward, the guide rod 9 moves downward.

[0043] A positioning plate 10 is fixedly provided at the bottom end of the guide rod 9. A positioning hole 11 is formed on the surface of the positioning plate 10. The positioning hole 11 is located directly below the tool 26. A first spring 24 is connected between the positioning plate 10 and the movable block 22. When the guide rod 9 moves downward, the positioning plate 10 at the bottom moves downward until the positioning plate 10 abuts the top of the workpiece 13. At this time, the guide rod 9 and the movable block 22 slide toward each other, and the first spring 24 is compressed, generating a downward thrust on the positioning plate 10, so that the positioning plate 10 clamps the workpiece 13 in the vertical direction to prevent the workpiece 13 from deflecting during drilling. As the tool 26 continues to move downward, the tool 26 passes through the positioning hole 11 on the surface of the positioning plate 10 to perform a drilling operation on the workpiece 13. By providing the guide rod 9 and the positioning hole 11, it can be ensured that the movement direction of the tool 26 is always on the same vertical line, thereby improving the drilling accuracy of the workpiece 13 and preventing the drilling position from deflecting.

[0044] The self-regulating cooling mechanism includes a coolant inlet pipe 19, which is vertically mounted on the top of the outer sleeve 21. A rotating portion 18 is disposed in the middle of the coolant inlet pipe 19. Several latching teeth 29 are evenly arranged on the outer wall of the rotating portion 18. A drive gear 17 is fixedly mounted in the middle of the rotating shaft 15, meshing with the latching teeth 29. When the rotating shaft 15 moves, the drive gear 17 on its outer wall begins to rotate. The rotation of the drive gear 17 drives the rotating portion 18, which is meshed with the latching teeth 29, to rotate. At this time, coolant is injected into the diversion chamber 27 along the coolant inlet pipe 19.

[0045] A diversion chamber 27 is defined between the outer sleeve 21 and the outer collar 20. The bottom of the diversion chamber 27 is provided with a plurality of liquid outlet holes 28. A plurality of nozzles 25 are evenly distributed across the bottom of the outer sleeve 21. The number and position of the nozzles 25 match the number and position of the liquid outlet holes 28. The output ends of the nozzles 25 face the bottom end of the tool 26. Coolant flows into the diversion chamber 27, passes through the liquid outlet holes 28, and is ejected along the nozzles 25 to cool the workpiece 13 and the tool 26.

[0046] A number of baffles 30 are evenly arranged inside the rotating part 18 around the axis of the coolant inlet pipe 19. The baffles 30 are arranged perpendicular to the axis of the coolant inlet pipe 19. A movable bar is fixedly provided on the outer edge of the baffle 30. A slide bar 31 is vertically provided in the middle of the movable bar. A movable groove 32 is provided at the connection between the slide bar 31 and the inner wall of the rotating part 18. The movable groove 32 is radially arranged along the axis of the coolant inlet pipe 19. A second spring 33 is connected between the slide bar 31 and the outer end of the movable groove 32. When the rotating part 18 rotates, it drives the baffle 30 inside it to start rotating. When the baffle 30 rotates, it drives the guide bar 34 on its outer edge to rotate accordingly, generating centrifugal force, causing the slide bar 31 at the center of the guide bar 34 to move outward along the direction of the movable groove 32, driving the baffle 30 to open. At this time, the second spring 33 is compressed, and an elastic force in the opposite direction is generated on the slide bar 31, so that the coolant flows into the diversion cavity 27 along the channel surrounded by the baffle 30. When the speed of the tool 26 is faster, the temperature generated during drilling is higher. At this time, the faster the speed of the rotating shaft 15 and the faster the speed of the rotating part 18, the greater the centrifugal force applied to the baffle 30, the greater the opening amplitude, and the greater the flow rate of the coolant, so that the coolant flow rate can be self-regulated according to the speed of the tool 26, fully improving the cooling effect, and at the same time reducing the flow rate of the coolant.

[0047] The synchronous oil injection lubrication mechanism includes an oil injection chamber 40 located at the top of the mounting groove 39. The top end of the drill shank extends into the interior of the oil injection chamber 40. An upper collar 41 is slidably provided at the top of the mounting seat 16 around the rotating shaft 15. A through hole 43 is provided within the upper collar 41. The output end of the through hole 43 communicates with the oil injection chamber 40. The top input end of the through hole 43 is connected to an oil injection pipe 42. Lubricating oil is injected into the oil injection chamber 40 through the oil injection pipe 42 and flows into the interior of the tool 26 through the oil inlet hole 45.

[0048] An inner oil chamber 44 is provided inside the drill shank, and a plurality of oil inlet holes 45 are provided between the inner oil chamber 44 and the top of the outer wall of the drill shank. An inner hole 46 is provided between the bottom of the inner oil chamber 44 and the interior of the cutting portion 35, and an oil outlet hole 47 is provided between the bottom end of the inner hole 46 and the outside of the cutting portion 35. A sealing plate 48 is movably provided inside the oil inlet hole 45, and the sealing plate 48 is arranged perpendicular to the oil inlet hole 45. A lower push block 49 is connected to the bottom of the sealing plate 48, and the lower push block 49 is slidably connected to the interior of the drill shank through a lower slot 53. The top of the lower slot 53 is connected to a side slot 52 facing the inner oil chamber 44, and a side push block 51 is slidably provided inside the side slot 52. The side push block 51 is slidably connected to the lower push block 49 through an inclined sliding connection, and a third spring 50 is provided between the lower push block 49 and the bottom of the lower slot 53. When the tool 26 rotates, the side push block 51 inside it is subjected to an outward centrifugal force, causing the side push block 51 to slide outward along the side groove 52. When the side push block 51 moves, it drives the lower push block 49 connected to it by a sliding surface to slide downward along the lower groove 53. At this time, the third spring 50 is compressed, and when the lower push block 49 moves downward, it drives the top sealing plate 48 to move downward, so that the oil inlet hole 45 is connected, and the lubricating oil flows into the interior of the inner oil cavity 44 along the oil inlet hole 45 and then enters the inner hole 46, and finally flows out along the oil outlet hole 47 to the contact point between the cutting part 35 and the workpiece 13, lubricating the cutting part 35, reducing the friction between the cutting part 35 and the workpiece 13, thereby increasing the life of the tool 26. When the tool 26 stops rotating, the sealing plate 48 is reset under the elastic force of the third spring 50, sealing the oil inlet hole 45, and preventing the oil inlet hole 45 from being blocked.

[0049] Working principle: When drilling, place the workpiece 13 between the clamps 12, start the driving motor, and make the rotating shaft 5 start to rotate. When the rotating shaft 5 rotates, it drives the rotating disk 4 to start rotating, so that the movable rod 6 connected to the edge of the rotating disk 4 rotates accordingly, and drives the vertical rod 7 connected to the bottom of the movable rod 6 to start periodic rotation up and down; when the vertical rod 7 moves downward, it drives the rotating motor 8 and the rotating shaft 15 to rotate downward, and when the rotating motor 8 moves downward, it is started so that the rotating shaft 15 starts to rotate while moving downward, and when the rotating shaft 15 moves, it drives the mounting seat 16 and the tool 26 to move synchronously, and continuously and efficiently drills the workpiece 13 at the bottom of the tool 26; when the mounting seat 16 moves downward, it drives the outer outer collar 20 to move downward synchronously, and when the outer collar 20 moves downward, it drives the connecting frames 23 and the movable The movable block 22 moves downward, and when the movable block 22 moves downward, it drives the guide rod 9 to move downward. When the guide rod 9 moves downward, it drives the bottom positioning plate 10 to move downward until the positioning plate 10 abuts against the top of the workpiece 13. At this time, the guide rod 9 and the movable block 22 slide toward each other, and the first spring 24 is compressed, which produces a downward thrust on the positioning plate 10, so that the positioning plate 10 clamps and fixes the workpiece 13 in the vertical direction to prevent the workpiece 13 from deflecting during drilling; as the tool 26 continues to move downward, the tool 26 passes through the positioning hole 11 on the surface of the positioning plate 10 to punch the workpiece 13. By providing the guide rod 9 and the positioning hole 11, it can be ensured that the movement direction of the tool 26 is always on the same vertical line, thereby improving the punching accuracy of the workpiece 13 and avoiding deviation of the punching position.

[0050] When the rotating shaft 15 moves, it drives the driving gear 17 on its outer wall to start rotating. When the driving gear 17 rotates, it drives the rotating part 18 meshing with it through the latch teeth 29 to start rotating. At this time, coolant is injected into the diversion cavity 27 along the coolant inlet pipe 19; when the rotating part 18 rotates, it drives the baffle 30 inside it to start rotating. When the baffle 30 rotates, it drives the guide bar 34 on its outer edge to rotate accordingly, generating centrifugal force, so that the slide bar 31 at the center of the guide bar 34 moves outward along the direction of the movable groove 32, driving the baffle 30 to open. At this time, the second spring 33 is compressed, which produces a centrifugal force on the slide bar 31. The spring force in the opposite direction is generated, so that the coolant flows into the diversion chamber 27 along the channel surrounded by the baffle 30, and then is sprayed out along the nozzle 25 through the liquid outlet 28 to cool the workpiece 13 and the tool 26; when the rotation speed of the tool 26 is faster, the temperature generated during drilling is higher. At this time, the faster the rotation speed of the rotating shaft 15 and the faster the rotation speed of the rotating part 18, the greater the centrifugal force applied to the baffle 30, the greater the opening amplitude, and the greater the flow rate of the coolant. Therefore, the coolant flow rate can be self-regulated according to the rotation speed of the tool 26, fully improving the cooling effect, while reducing the flow rate of the coolant.

[0051] When the tool 26 rotates, the side push block 51 inside it is subjected to the outward centrifugal force, causing the side push block 51 to slide outward along the side slot 52. When the side push block 51 moves, it drives the lower push block 49 connected to it by the inclined surface to slide downward along the lower slot 53. At this time, the third spring 50 is compressed, and when the lower push block 49 moves downward, it drives the top sealing plate 48 to move downward, so that the oil inlet hole 45 is conductive; at this time, lubricating oil is injected into the oil filling chamber 40 through the oil filling pipe 42, and the lubricating oil flows into the interior of the inner oil chamber 44 along the oil inlet hole 45 and then into the inner hole 46, and finally flows out along the oil outlet hole 47 to the contact point between the cutting portion 35 and the workpiece 13, lubricating the cutting portion 35, reducing the friction between the cutting portion 35 and the workpiece 13, thereby increasing the life of the tool 26. When the tool 26 stops rotating, the sealing plate 48 is reset under the elastic force of the third spring 50, sealing the oil inlet hole 45, and preventing the oil inlet hole 45 from being blocked.

[0052] The above embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

Claims

1. A drill bit with efficient cooling function, characterized by: It includes a processing table (1), a high-efficiency and precise drilling mechanism, a self-adjusting cooling mechanism, and a synchronous oil injection and lubrication mechanism; A back plate (3) is fixedly provided on the rear side of the top of the processing table (1), and the back plate (3) is arranged perpendicular to the processing table (1). A rotating disk (4) is provided on the top of the front side wall of the back plate (3). The center of the rotating disk (4) is rotatably connected to the back plate (3) via a rotating shaft (5). The other end of the rotating shaft (5) extends to the rear side wall of the back plate (3). The other end of the rotating shaft (5) is connected to a driving motor. The rotating disk (4) is arranged parallel to the back plate (3). A movable rod (6) is rotatably connected to the edge of the front side wall of the rotating disk (4). The other end of the movable rod (6) is rotatably connected to a vertical rod (7). The vertical rod (7) The middle part is slidably connected to the back plate (3) through a limit block (14), the vertical rod (7) is vertically arranged with the processing table (1), the high-efficiency and precise drilling mechanism is arranged at the bottom end of the vertical rod (7), a workpiece (13) is movably arranged at the top center of the processing table (1), and clamps (12) are movably arranged on both sides of the workpiece (13), and the workpiece (13) is located directly above the high-efficiency and precise drilling mechanism, the self-regulating cooling structure is arranged on the outside of the output end of the high-efficiency and precise drilling mechanism, the synchronous oil injection lubrication mechanism is arranged on the inside of the high-efficiency and precise drilling mechanism, and a plurality of brackets (2) are fixedly arranged at the bottom of the processing table (1); The high-efficiency and precise drilling mechanism comprises a rotary motor (8), wherein the bottom output end of the rotary motor (8) is connected to a rotary shaft (15); The self-regulating cooling mechanism includes a cooling liquid inlet pipe (19), a rotating portion (18) is provided in the middle of the cooling liquid inlet pipe (19), a plurality of latching teeth (29) are evenly provided on the outer wall of the rotating portion (18), a driving gear (17) is fixedly provided in the middle of the rotating shaft (15), and the driving gear (17) is meshed with the latching teeth (29); A plurality of baffles (30) are evenly arranged inside the rotating part (18) around the axis of the coolant inlet pipe (19), and the baffles (30) are arranged perpendicular to the axis of the coolant inlet pipe (19). A guide bar (34) is fixedly arranged on the outer edge of the baffle (30), and a slide bar (31) is vertically arranged in the middle of the guide bar (34). A movable groove (32) is provided at the connection between the slide bar (31) and the inner wall of the rotating part (18), and the movable groove (32) is radially arranged along the axis of the coolant inlet pipe (19). A second spring (33) is connected between the slide bar (31) and the outer end of the movable groove (32).

2. A drill bit with efficient cooling function according to claim 1, characterized in that The rotating shaft (15) is arranged parallel to the vertical rod (7), and a mounting seat (16) is fixedly provided at the bottom end of the rotating shaft (15). A tool (26) is provided at the bottom of the mounting seat (16), and the tool (26) includes a drill shank and a drill body (36). Baffles (38) are fixedly provided on both sides of the outer wall of the drill shank. A cutting portion (35) is provided at the bottom of the drill body (36). A spiral groove (37) is provided on the outer wall of the drill body (36). A mounting groove (39) is provided at the bottom of the mounting seat (16). The baffle (38) matches the cross-sectional shape and size of the mounting groove (39). The drill shank is detachably connected to the mounting seat (16) through the baffle (38).

3. A drill bit with efficient cooling function according to claim 2, characterized in that : The outer side of the mounting seat (16) is provided with an outer ring (20), and the outer side of the outer ring (20) is fixedly provided with an outer sleeve (21), and the outer side wall of the mounting seat (16) is provided with an outer sliding groove, and the mounting seat (16) is rotatably connected to the outer ring (20) through the outer sliding groove, and the mounting seat (16), the outer sleeve (21) and the outer ring (20) are coaxially arranged, and a connecting frame (23) is symmetrically provided on the rear side of the outer side wall of the outer sleeve (21), and the other end of the connecting frame (23) is fixedly connected to a movable block (22), and the movable block (22) is slidably connected to the front side wall of the back plate (3), and the inner side of the movable block (22) is slidably connected to a guide rod (9), and the guide rod (9) is arranged parallel to the tool (26).

4. A drill bit with efficient cooling function according to claim 3, characterized in that A positioning plate (10) is fixedly provided at the bottom end of the guide rod (9), a positioning hole (11) is provided on the surface of the positioning plate (10), and the positioning hole (11) is located directly below the tool (26). A first spring (24) is connected between the positioning plate (10) and the movable block (22).

5. A drill bit with efficient cooling function according to claim 4, characterized in that The cooling liquid inlet pipe (19) is vertically arranged on the top of the outer sleeve (21).

6. A drill bit with efficient cooling function according to claim 5, characterized in that A diversion cavity (27) is defined between the outer sleeve (21) and the outer ring (20), and a plurality of liquid outlet holes (28) are provided at the bottom of the diversion cavity (27). A plurality of nozzles (25) are evenly provided at the bottom of the outer sleeve (21), and the number and position of the nozzles (25) match those of the liquid outlet holes (28), and the output end of the nozzle (25) faces the bottom end of the tool (26).

7. A drill bit with efficient cooling function according to claim 6, characterized in that The synchronous oil injection lubrication mechanism includes an oil injection chamber (40), the oil injection chamber (40) is located at the top of the mounting groove (39), the top of the drill shank extends to the inside of the oil injection chamber (40), the top of the mounting seat (16) is provided with an upper ring (41) slidably around the rotating shaft (15), the interior of the upper ring (41) is provided with a through hole (43), the output end of the through hole (43) is connected to the oil injection chamber (40), and the top input end pipeline of the through hole (43) is connected to the oil injection pipe (42).

8. The drill bit with efficient cooling function according to claim 7, characterized in that An inner oil cavity (44) is provided inside the drill shank, a plurality of oil inlet holes (45) are provided between the inner oil cavity (44) and the top of the outer wall of the drill shank, an inner hole (46) is provided between the bottom of the inner oil cavity (44) and the inside of the cutting portion (35), an oil outlet hole (47) is provided between the bottom end of the inner hole (46) and the outside of the cutting portion (35), a sealing plate (48) is movably provided inside the oil inlet hole (45), and the sealing plate (48) is vertically arranged with respect to the oil inlet hole (45). The bottom of the sealing plate (48) is connected to a push-down block (49), and the push-down block (49) is connected to the inside of the drill shank in a sliding manner through a lower slot (53). The top of the lower slot (53) is connected to a side slot (52) facing the inner oil chamber (44), and a side push block (51) is slidably provided inside the side slot (52). The side push block (51) and the push-down block (49) are connected in a sliding manner through an inclined plane, and a third spring (50) is provided between the push-down block (49) and the bottom of the lower slot (53).

9. A method for operating a drill bit with efficient cooling function according to any one of claim 8, characterized in that : Steps include: S1. When drilling, place the workpiece (13) between the clamps (12), start the drive motor, and make the rotating shaft (5) start to rotate. When the rotating shaft (5) rotates, the rotating disk (4) starts to rotate, so that the movable rod (6) connected to the edge of the rotating disk (4) rotates accordingly, and drives the vertical rod (7) connected to the bottom of the movable rod (6) to start periodic up and down rotation; S2, when the vertical rod (7) moves downward, the rotating motor (8) and the rotating shaft (15) are driven to rotate downward, and the rotating motor (8) is started when it moves downward, so that the rotating shaft (15) starts to rotate while moving downward, and when the rotating shaft (15) moves, the mounting seat (16) and the tool (26) are driven to move synchronously, so that the workpiece (13) at the bottom of the tool (26) is continuously and efficiently drilled; S3, the mounting seat (16) moves downward while driving the outer outer ring (20) to move downward synchronously, the outer ring (20) drives the connecting frames (23) and the movable block (22) on both sides to move downward, the movable block (22) drives the guide rod (9) to move downward, the guide rod (9) drives the bottom positioning plate (10) to move downward until the positioning plate (10) abuts against the top of the workpiece (13), at which time the guide rod (9) and the movable block (22) slide toward each other, the first spring (24) is compressed, and a downward thrust is generated on the positioning plate (10), so that the positioning plate (10) clamps and fixes the workpiece (13) in the vertical direction, thereby preventing the workpiece (13) from deflecting during drilling; S4. As the tool (26) continues to move downward, the tool (26) passes through the positioning hole (11) on the surface of the positioning plate (10) to perform a punching operation on the workpiece (13). By providing the guide rod (9) and the positioning hole (11), it is ensured that the movement direction of the tool (26) is always on the same vertical line, thereby improving the punching accuracy of the workpiece (13) and avoiding deviation of the punching position; S5, when the rotating shaft (15) moves, the driving gear (17) on the outer wall thereof starts to rotate, and when the driving gear (17) rotates, the rotating portion (18) meshed with the rotating shaft (15) through the latching teeth (29) starts to rotate, and at this time, the coolant is injected into the diversion chamber (27) along the coolant inlet pipe (19); S6. When the rotating part (18) rotates, the baffle (30) inside it starts to rotate. When the baffle (30) rotates, the guide bar (34) on the outer edge thereof rotates, generating centrifugal force, so that the slide bar (31) in the center of the guide bar (34) moves outward along the direction of the movable groove (32), driving the baffle (30) to open. At this time, the second spring (33) is compressed, generating an elastic force in the opposite direction on the slide bar (31), so that the coolant flows into the diversion chamber (27) along the channel surrounded by the baffle (30), and then is sprayed out along the nozzle (25) through the liquid outlet (28), cooling the workpiece (13) and the tool (26); S7. When the rotation speed of the tool (26) is faster, the temperature generated during drilling is higher. At this time, the rotation speed of the rotating shaft (15) is faster, the rotation speed of the rotating part (18) is faster, the centrifugal force on the baffle (30) is greater, the opening range is larger, and the flow rate of the coolant is larger, thereby achieving self-regulation of the coolant flow rate according to the rotation speed of the tool (26), fully improving the cooling effect, and at the same time reducing the flow rate of the coolant; S8, when the tool (26) rotates, the side push block (51) inside it is subjected to an outward centrifugal force, causing the side push block (51) to slide outward along the side slot (52). When the side push block (51) moves, it drives the lower push block (49) connected to it by the inclined surface to slide downward along the lower slot (53). At this time, the third spring (50) is compressed, and when the lower push block (49) moves downward, it drives the top sealing plate (48) to move downward, so that the oil inlet hole (45) is conductive; S9. At this time, lubricating oil is injected into the oil filling chamber (40) through the oil filling pipe (42). The lubricating oil flows into the interior of the inner oil chamber (44) along the oil inlet hole (45) and then enters the inner hole (46). Finally, it flows out along the oil outlet hole (47) to the contact point between the cutting portion (35) and the workpiece (13), lubricating the cutting portion and reducing the friction between the cutting portion (35) and the workpiece (13), thereby increasing the life of the tool (26). When the tool (26) stops rotating, the sealing plate (48) is reset under the elastic force of the third spring (50), sealing the oil inlet hole (45) to prevent the oil inlet hole (45) from being blocked.

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