Drill bit with efficient cooling function and working method thereof

Abstract

The invention relates to the technical field of machining, and discloses a drill bit with an efficient cooling function and a working method thereof.The drill bit comprises a machining table, an efficient and accurate drilling mechanism, a self-adjusting cooling mechanism and a synchronous oil injection lubricating mechanism; a back plate is fixedly arranged on the rear side of the top of the machining table, the back plate is perpendicular to the machining table, and a rotating disc is arranged on the top of the front side wall of the back plate. The efficient and accurate drilling mechanism is arranged, when a guide rod moves downwards, a positioning plate at the bottom is driven to move downwards till the positioning plate abuts against the top of a workpiece, at the moment, opposite sliding and compression of a first spring are generated between the guide rod and a movable block, and downward thrust is generated on the positioning plate, so that the workpiece is clamped and fixed in the vertical direction through the positioning plate; and by arranging a guide rod and a positioning hole, it can be guaranteed that the moving direction of the cutter is always located on the same vertical line, the punching precision of the workpiece is improved, and the punching position is prevented from deflecting.

Description

Technical Field

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

[0002] A drill bit is a rotating tool with cutting capabilities at the head end, mainly used for drilling holes in different materials such as metal, wood, stone, concrete, etc. The drill bit pushes the cutting edge teeth into the work object through rotation and thrust, thereby achieving the purpose of drilling. During the drilling process, the drill bit not only needs to have sufficient hardness and toughness to cope with the cutting of materials, but also needs to maintain stable rotation and appropriate feed speed to ensure the quality of drilling. The drill bit is mainly made of metal, and common materials include cemented carbide, diamond powder, and high-speed steel. These materials have wear resistance, impact toughness and high hardness to meet the drilling needs of different materials.

[0003] The drill bit uses different rotation speeds and motion trajectories according to different drilling requirements, and the heat generated when it contacts the workpiece is also different. It is difficult for existing drill bits to ensure drilling accuracy when drilling, and the flow rate of coolant is mostly fixed during cooling, which easily causes large waste and cannot ensure the cooling effect. The drill bit will wear when it contacts the workpiece, and the life span is short, resulting in high drilling processing costs. Therefore, a drill bit with efficient cooling function and a working method thereof 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 is mostly fixed during cooling, which easily causes great waste and cannot ensure the cooling effect. The drill bit will wear when in contact with the workpiece and has a short life, 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: The first solution of the present invention is to provide a drill bit with efficient cooling function, including a processing table, an efficient and accurate drilling mechanism, a self-adjusting cooling mechanism and a synchronous oil injection and lubrication mechanism; A back plate is fixedly arranged on the top rear side of the processing table, and the back plate is arranged perpendicular to the processing table, and a rotating disk is arranged on the top of the front side wall of the back plate, and the center of the rotating disk is rotatably connected to the back plate by a rotating shaft, and 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 a driving motor, and the rotating disk is arranged parallel to the back plate, and a movable rod is rotatably connected to the edge of the front side wall of the rotating disk, and the other end of the movable rod is rotatably connected to a vertical rod, and the middle part of the vertical rod is slidably connected to the back plate through a limit block, and the vertical rod is arranged perpendicular to the processing table, and the high-efficiency and precise drilling mechanism is arranged at the bottom end of the vertical rod, a workpiece is movably arranged at the top center of the processing table, and clamps are movably arranged on both sides of the workpiece, and the workpiece is located directly above the high-efficiency and precise drilling mechanism, and the self-adjusting cooling structure is arranged on the outside of the output end of the high-efficiency and precise drilling mechanism, and the synchronous oil injection and lubrication mechanism is arranged on the inner side of the high-efficiency and precise drilling mechanism, and a plurality of brackets are fixedly arranged at the bottom of the processing table. 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 rotation up and down. The workpiece can be drilled efficiently and accurately through the efficient and accurate drilling mechanism at the bottom of the vertical rod. When drilling, the flow rate of the coolant can be adaptively adjusted through the self-adjusting cooling mechanism, which improves the cooling effect while reducing the consumption of the coolant. The tool can be lubricated by the synchronous oiling and lubrication mechanism to increase the service life of the tool.

[0006] Furthermore, the efficient and precise drilling mechanism includes a rotary motor, the bottom output end of the rotary motor is connected to a rotary shaft, the rotary shaft is arranged parallel to the vertical rod, the bottom end of the rotary shaft is fixedly provided with a mounting seat, the bottom of the mounting seat is provided with a tool, the tool includes a drill shank and a drill body, the outer side walls of the drill shank are fixedly provided with baffles on both sides, the bottom of the drill body is provided with a cutting portion, the outer side wall of the drill body is provided with a spiral groove, the bottom of the mounting seat is provided with a mounting groove, the baffle matches the cross-sectional shape and size of the mounting groove, and the drill shank is detachably connected to the mounting seat through the baffle. When the vertical rod moves downward, the rotary motor and the rotary shaft are driven to rotate downward, and the rotary motor is started when it moves downward, so that the rotary shaft starts to rotate while moving downward, and when the rotary 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.

[0007] Further, an outer sleeve is provided on the outer side of the mounting seat, an outer sleeve is fixedly provided on the outer side of the outer sleeve, an outer slide groove is provided on the outer side wall of the mounting seat, the mounting seat is rotatably connected to the outer sleeve through the outer slide groove, the mounting seat, the outer sleeve and the outer sleeve are coaxially arranged, a connecting frame is symmetrically arranged 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 sleeve on the outer side is driven to move downward synchronously, and when the outer sleeve moves downward, the connecting frame and the movable block on both sides are driven to move downward, and when the movable block moves downward, the guide rod is driven downward.

[0008] 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, and 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, 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 to prevent the workpiece from being deflected 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 drilling 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 in the same vertical line, thereby improving the drilling accuracy of the workpiece and preventing the drilling position from being deflected.

[0009] Furthermore, the self-regulating cooling mechanism includes a coolant inlet pipe, which is vertically arranged at the top of the outer sleeve, a rotating part is arranged in the middle of the coolant inlet pipe, and a plurality of latch teeth are evenly arranged on the outer wall of the rotating part, and a driving gear is fixedly arranged in the middle of the rotating shaft, and the driving gear is meshed with the latch teeth. When the rotating shaft moves, the driving gear on its outer wall starts to rotate, and when the driving gear rotates, the rotating part meshed with it through the latch teeth starts to rotate, and at this time, the coolant is injected into the diversion cavity along the coolant inlet pipe.

[0010] Furthermore, a flow-dividing cavity is formed between the outer sleeve and the outer ring, a plurality of liquid outlet holes are formed at the bottom of the flow-dividing cavity, a plurality of nozzles are evenly arranged at the bottom of the outer sleeve, the nozzles match the number and position of the liquid outlet holes, and the output end of the nozzle faces the bottom end of the tool. After the coolant flows into the flow-dividing cavity, it passes through the liquid outlet holes and is sprayed along the nozzles to cool the workpiece and the tool.

[0011] Furthermore, a plurality of baffles are evenly arranged around the axis of the coolant inlet pipe inside the rotating part, the baffles are arranged perpendicularly to the axis of the coolant inlet pipe, a movable bar is fixedly arranged on the outer edge of the baffle, a slide rod is vertically arranged in the middle of the movable bar, a movable groove is opened at the connection between the slide rod and the inner wall of the rotating part, the movable groove is radially arranged along the axis of the coolant inlet pipe, and a second spring is connected between the slide rod and the outer end of the movable groove. When the rotating part rotates, the baffle inside it starts to rotate. When the baffle rotates, it drives the guide strip on its outer edge to rotate accordingly, generating centrifugal force, so that the slide bar in the center of the guide strip moves outward along the direction of the movable groove, driving the baffle to open. At this time, the second spring is compressed, and an elastic force in the opposite direction is generated 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 amplitude, 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, and the cooling effect is fully improved, while the coolant flow rate can be reduced.

[0012] Furthermore, the synchronous oil injection lubrication mechanism includes an oil injection cavity, the oil injection cavity is located at the top of the mounting groove, the top of the drill shank extends to the inside of the oil injection cavity, the top of the mounting seat is provided with an upper collar slidably around the rotating shaft, the inside of the upper collar is provided with a through hole, the output end of the through hole is connected to the oil injection cavity, and the top input end pipeline of the through hole is connected to an oil injection pipe. Lubricating oil is injected into the oil injection cavity through the oil injection pipe, and the lubricating oil flows into the tool along the oil inlet hole.

[0013] 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 portion, an oil outlet hole is provided between the bottom end of the inner hole and the outside of the cutting portion, 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 is slidably connected to the push-down block through an inclined surface, and a third spring is provided between the push-down 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, and when the side push block moves, it drives the lower push block slidably connected to it through 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 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.

[0014] 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: S1. When drilling, place the workpiece between the fixtures, start the drive motor, and make the rotating shaft start to rotate. When the rotating shaft rotates, the rotating disk starts to rotate, so that the movable rod connected to the edge of the rotating disk rotates accordingly, and the vertical rod connected to the bottom of the movable rod starts to rotate up and down periodically; 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; S3, when the mounting seat moves downward, it drives the outer outer ring to move downward synchronously, and when the outer ring moves downward, it drives the connecting frames and movable blocks on both sides to move downward, and when the movable block moves downward, it drives the guide rod to move downward, and when the guide rod moves downward, it drives the bottom positioning plate to move downward until the positioning plate abuts against the top of the workpiece, and then 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 to prevent the workpiece from deflecting during drilling; S4. As the tool continues to move downward, the tool 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, it can be ensured that the movement direction of the tool is always on the same vertical line, thereby improving the punching accuracy of the workpiece and avoiding deviation of the punching position; S5, when the rotating shaft moves, the driving gear on its outer wall starts to rotate, and when the driving gear rotates, the rotating part meshing with it through the latch teeth starts to rotate, and at this time, the coolant is injected into the diversion cavity along the coolant inlet pipe; S6, when the rotating part rotates, the baffle inside it starts to rotate, and when the baffle rotates, the guide bar on its outer edge rotates accordingly, generating centrifugal force, so that the slide bar at the center of the guide bar moves outward along the direction of the movable groove, driving the baffle to open. At this time, the second spring is compressed, generating 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, and then is sprayed out along the nozzle through the liquid outlet to cool the workpiece and the tool; S7. When the tool rotates faster, the temperature generated during drilling is 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 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 tool rotation speed, fully improving the cooling effect, and at the same time reducing the flow rate of the coolant; S8, when the tool rotates, the side push block inside it is subjected to the outward centrifugal force, so that the side push block slides outward along the side slot, and when the side push block moves, it drives the lower push block connected with it through 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 sealing plate at the top to move downward, so that the oil inlet hole is open; 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 to seal the oil inlet hole, thereby preventing the oil inlet hole from being blocked.

[0015] Beneficial effects of the present invention: 1. The drill bit with efficient cooling function of the present invention is provided with an efficient and accurate drilling mechanism, so that the mounting seat moves downward and at the same time drives the outer outer ring to move downward synchronously, and the outer ring drives the connecting frames and movable blocks on both sides to move downward when the outer ring moves downward, and the movable block drives the guide rod to move downward when the movable block moves downward, and the guide rod drives the bottom positioning plate to move 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 to generate a downward thrust on the positioning plate, so that the positioning plate clamps and fixes the workpiece in a vertical direction to avoid the workpiece from being deflected during drilling, and 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 avoiding the drilling position from being deflected.

[0016] 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-regulated 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.

[0017] 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 slidably connected to it through 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, so as to lubricate the cutting part and reduce 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 to seal the oil inlet hole, so as to avoid the oil inlet hole being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the drill bit with efficient cooling function; Figure 2 This is an enlarged schematic diagram of the structure at location A of the drill bit with efficient cooling function; Figure 3 This is a schematic diagram of the cross-sectional structure of the diverter cavity of the drill bit with efficient cooling function; Figure 4 It is a schematic diagram of the cross-sectional structure of the rotating part of the drill bit with efficient cooling function; Figure 5 It is a schematic diagram of the cross-sectional structure of the mounting seat of the drill bit with efficient cooling function; Figure 6 It is a schematic diagram of the cutter section structure of the drill bit with efficient cooling function; Figure 7 It is a schematic diagram of the internal structure of the oil inlet hole of the drill bit with efficient cooling function.

[0019] Description of the accompanying drawings: 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, latching tooth; 30, baffle; 31, slide bar; 32, movable groove; 33, second spring; 34, guide strip; 35, cutting part; 36, drill body; 37, spiral groove; 38, baffle; 39, mounting groove; 40, oil filling chamber; 41, upper sleeve ring; 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

[0020] The concept and technical effects of the present invention will be clearly and completely described below in conjunction with embodiments to fully understand the purpose, features and effects of the present invention.

[0021] 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; A back plate 3 is fixedly provided on the top rear side of the processing table, and the back plate 3 is vertically arranged with 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 part 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 vertically arranged 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 fixtures 12 are movably arranged on both sides of the workpiece 13, and 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 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. The workpiece 13 can be drilled efficiently and accurately through the efficient and accurate drilling mechanism at the bottom of the vertical rod 7. When 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.

[0022] 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, 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, 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 the workpiece 13 at the bottom of the tool 26 is continuously and efficiently drilled.

[0023] The outer side of the mounting seat 16 is sleeved with an outer ring 20, and an outer sleeve 21 is fixedly arranged on the outer side of the outer ring 20. The outer side wall of the mounting seat 16 is provided with an outer slide groove, and the mounting seat 16 is rotatably connected with the outer ring 20 through the outer slide groove. The mounting seat 16, the outer sleeve 21 and the outer ring 20 are coaxially arranged, and a connecting frame 23 is symmetrically arranged on the rear side of the outer side wall of the outer sleeve 21. The other end of the connecting frame 23 is fixedly connected with a movable block 22, and the movable block 22 is slidably connected with the front side wall of the back plate 3. The inner side of the movable block 22 is slidably connected with a guide rod 9, and the guide rod 9 is arranged parallel to the tool 26. When the mounting seat 16 moves downward, the outer ring 20 on the outer side is driven to move downward synchronously. When the outer ring 20 moves downward, the connecting frames 23 and the movable block 22 on both sides are driven to move downward. When the movable block 22 moves downward, the guide rod 9 is driven downward.

[0024] A positioning plate 10 is fixedly provided at the bottom end of the guide rod 9, and a positioning hole 11 is provided 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 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 generates 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 being deflected 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 in the same vertical line, thereby improving the drilling accuracy of the workpiece 13 and preventing the drilling position from being deflected.

[0025] The self-regulating cooling mechanism includes a coolant inlet pipe 19, which is vertically arranged at the top of the outer sleeve 21. A rotating part 18 is arranged in the middle of the coolant inlet pipe 19. A plurality of latch teeth 29 are evenly arranged on the outer wall of the rotating part 18. A driving gear 17 is fixedly arranged in the middle of the rotating shaft 15, and the driving gear 17 is meshed with the latch teeth 29. When the rotating shaft 15 moves, the driving gear 17 on its outer wall starts to rotate. When the driving gear 17 rotates, the rotating part 18 meshed with the latch teeth 29 starts to rotate. At this time, the coolant is injected into the diversion cavity 27 along the coolant inlet pipe 19.

[0026] A flow-dividing cavity 27 is enclosed 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 flow-dividing cavity 27. A plurality of nozzles 25 are evenly arranged at the bottom of the outer sleeve 21, and the number and position of the nozzles 25 match the number and position of the liquid outlet holes 28, and the output end of the nozzle 25 faces the bottom end of the tool 26. After the coolant flows into the flow-dividing cavity 27, it passes through the liquid outlet holes 28 and is sprayed along the nozzle 25 to cool the workpiece 13 and the tool 26.

[0027] 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 perpendicularly to the axis of the coolant inlet pipe 19. A movable bar is fixedly arranged on the outer edge of the baffle 30, and a slide bar 31 is vertically arranged in the middle of the movable bar. A movable groove 32 is opened 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 outer end of the slide bar 31 and the movable groove 32. When the rotating part 18 rotates, the baffle 30 inside it starts to rotate. 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, and an elastic force in the opposite direction is generated on the slide bar 31, so that the coolant flows into the diversion chamber 27 along the channel surrounded by the baffle 30. 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 on 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 rotation speed of the tool 26, fully improving the cooling effect, and at the same time reducing the flow rate of the coolant.

[0028] The synchronous oil injection lubrication mechanism includes an oil injection chamber 40, which is located at the top of the mounting groove 39, and the top of the drill shank extends to the inside of the oil injection chamber 40. The top of the mounting seat 16 is slidably provided with an upper collar 41 around the rotating shaft 15, and the inside of the upper collar 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 an oil injection pipe 42. Lubricating oil is injected into the oil injection chamber 40 through the oil injection pipe 42, and the lubricating oil flows into the inside of the tool 26 along the oil inlet hole 45.

[0029] An inner oil chamber 44 is provided inside the drill shank, 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 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, the sealing plate 48 is vertically arranged with the oil inlet hole 45, a push-down block 49 is connected to the bottom of the sealing plate 48, the push-down block 49 is slidably connected to the inside of the drill shank through a lower slot 53, a side slot 52 is connected to the top of the lower slot 53 facing the inner oil chamber 44, a side push block 51 is slidably provided inside the side slot 52, the side push block 51 is slidably connected to the push-down block 49 through an inclined sliding connection, and a third spring 50 is provided between the push-down 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 slidably connected to it through the inclined 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 chamber 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 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, and the oil inlet hole 45 is sealed, which can prevent the oil inlet hole 45 from being blocked.

[0030] 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, so as to continuously and efficiently drill the workpiece 13 at the bottom of the tool 26; when the mounting seat 16 moves downward, it drives the outer outer ring 20 to move downward synchronously, and when the outer ring 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 generates 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 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.

[0031] When the rotating shaft 15 moves, the driving gear 17 on its outer wall starts to rotate. When the driving gear 17 rotates, the rotating part 18 meshed with it through the latch teeth 29 starts to rotate. At this time, the coolant is injected into the diversion chamber 27 along the coolant inlet pipe 19; when the rotating part 18 rotates, the baffle 30 inside it starts to rotate. When the baffle 30 rotates, the guide bar 34 on its outer edge rotates 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, generating centrifugal force on the slide bar 31. The elastic 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 on 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, and at the same time reducing the flow rate of the coolant.

[0032] 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 slidably connected to it through 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 enters 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, and when the tool 26 stops rotating, the sealing plate 48 is reset under the elastic force of the third spring 50, and the oil inlet hole 45 is sealed, so as to avoid the oil inlet hole 45 being blocked.

[0033] 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 all fall within the scope of protection of the present invention.

Claims

1. A drill bit with efficient cooling function, characterized in that: It comprises 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 arranged on the rear side of the top of the processing table (1), the back plate (3) being arranged perpendicular to the processing table (1), a rotating disk (4) is arranged 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), the edge of the front side wall of the rotating disk (4) is rotatably connected to a movable rod (6), the other end of the movable rod (6) is rotatably connected to a vertical rod (7), the vertical rod (7) The middle part of the processing table (1) is slidably connected to the back plate (3) through a limit block (14), the vertical rod (7) is arranged vertically with the processing table (1), the high-efficiency and high-precision 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 high-precision drilling mechanism, the self-adjusting cooling structure is arranged on the outside of the output end of the high-efficiency and high-precision drilling mechanism, the synchronous oil injection lubrication mechanism is arranged on the inside of the high-efficiency and high-precision drilling mechanism, and a plurality of brackets (2) are fixedly arranged at the bottom of the processing table (1).

2. A drill bit with efficient cooling function according to claim 1, characterized in that The efficient and precise drilling mechanism comprises a rotary motor (8), the bottom output end of the rotary motor (8) is connected to a rotary shaft (15), the rotary shaft (15) is arranged parallel to the vertical rod (7), the bottom end of the rotary 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) comprises a drill shank and a drill body (36), retaining bars (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 retaining bar (38) matches the cross-sectional shape and size of the retaining bar (38) and the drill shank is detachably connected to the mounting seat (16) via the retaining bar (38).

3. A drill bit with efficient cooling function according to claim 2, characterized in that An outer sleeve (20) is sleeved on the outer side of the mounting seat (16), an outer sleeve (21) is fixedly arranged on the outside of the outer sleeve (20), an outer sliding groove is opened on the outer wall of the mounting seat (16), the mounting seat (16) is rotatably connected to the outer sleeve (20) through the outer sliding groove, the mounting seat (16), the outer sleeve (21) and the outer sleeve (20) are coaxially arranged, a connecting frame (23) is symmetrically arranged 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), the movable block (22) is slidably connected to the front side wall of the back plate (3), the inner part 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 3, characterized in that The self-regulating cooling mechanism comprises a coolant inlet pipe (19), wherein the coolant inlet pipe (19) is vertically arranged at the top of the outer sleeve (21), a rotating part (18) is arranged in the middle of the coolant inlet pipe (19), a plurality of latch teeth (29) are evenly arranged on the outer side wall of the rotating part (18), and a driving gear (17) is fixedly arranged in the middle of the rotating shaft (15), and the driving gear (17) is meshed with the latch teeth (29).

6. A drill bit with efficient cooling function according to claim 5, characterized in that A flow divider cavity (27) is formed between the outer sleeve (21) and the outer ring (20), a plurality of liquid outlet holes (28) are formed at the bottom of the flow divider cavity (27), a plurality of nozzles (25) are evenly arranged at the bottom of the outer sleeve (21), 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 5, characterized in that A plurality 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 perpendicularly to the axis of the coolant inlet pipe (19), a movable bar (34) is fixedly arranged on the outer edge of the baffle (30), a slide bar (31) is vertically arranged in the middle of the movable 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), the movable groove (32) is radially arranged along the axis of the coolant inlet pipe (19), and a second spring (33) is connected between the slide bar (31) and the outer end of the movable groove (32).

8. The drill bit with efficient cooling function according to claim 2, characterized in that The synchronous oil injection lubrication mechanism comprises 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 into the interior of the oil injection chamber (40), an upper sleeve (41) is slidably provided at the top of the mounting seat (16) around the rotating shaft (15), a through hole (43) is provided inside the upper sleeve (41), an output end of the through hole (43) is connected to the oil injection chamber (40), and an oil injection pipe (42) is connected to the top input end pipeline of the through hole (43).

9. A drill bit with efficient cooling function according to claim 8, characterized in that An inner oil chamber (44) is provided inside the drill shank, 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 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), the sealing plate (48) is vertically arranged with respect to the oil inlet hole (45), and the A push-down block (49) is connected to the bottom of the sealing plate (48), and the push-down block (49) is slidably connected to the inside of the drill shank through a lower slot (53). A side slot (52) is connected to the top of the lower slot (53) on the side facing the inner oil chamber (44). A side push block (51) is slidably arranged inside the side slot (52). The side push block (51) is slidably connected to the push-down block (49) through an inclined surface. A third spring (50) is arranged between the push-down block (49) and the bottom of the lower slot (53).

10. A method for operating a drill bit with efficient cooling function according to any one of claims 1 to 9, characterized in that : The 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, 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, 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 possible to ensure 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 part (18) meshing with it 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, and when the baffle (30) rotates, the guide bar (34) on the outer edge thereof rotates 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, 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 passes through the liquid outlet (28) and is sprayed along the nozzle (25) to cool 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 amplitude is larger, and the flow rate of the coolant is larger. Therefore, the flow rate of the coolant can be self-regulated according to the rotation speed of the tool (26), the cooling effect is fully improved, and the flow rate of the coolant can be reduced at the same time; 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) slidably connected to it through 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 sealing plate (48) at the top to move downward, so that the oil inlet hole (45) is conductive; S9. At this time, lubricating oil is injected into the oil injection chamber (40) through the oil injection pipe (42). The lubricating oil flows into the inner oil chamber (44) along the oil inlet hole (45) and then into the inner hole (46). Finally, the lubricating oil flows out along the oil outlet hole (47) to the contact point between the cutting portion (35) and the workpiece (13), thereby 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), thereby sealing the oil inlet hole (45) and preventing the oil inlet hole (45) from being blocked.

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