Precise tool sharpener

Abstract

The utility model belongs to the technical field of screw machining, and particularly relates to a precise tool sharpener which comprises a device body, a rotary table machine is installed in the middle of the top side of the device body, and four sets of material clamping seats are installed on the rotary table machine. And in combination with the sealing communication design of a rotating block, a fixing sleeve, a liquid inlet channel and a liquid outlet channel in the cooling liquid circulating mechanism, the cooling liquid can directly circulate into the cutter in the cutting process. Cooling liquid is driven by the cooling liquid circulating pump and forms closed-loop circulation between the water tank and the cooling channel through the liquid inlet pipe and the liquid outlet pipe, splashing waste caused by traditional spraying is avoided, and the heat dissipation efficiency is remarkably improved through internal cooling. And meanwhile, stable communication of a cooling liquid channel during rotation of the rotating shaft is ensured through the design of a bearing between the fixing sleeve and the rotating block, the problem of leakage or interruption caused by moving parts in a traditional open type cooling system is solved, and the precise and continuous cooling effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of screw processing technology, specifically a precision grinding machine. Background Technology

[0002] A screw grinding machine is a specialized machine tool used to machine grooves (such as Phillips head grooves and slotted head grooves) on screw heads or shanks. It precisely cuts with a cutting tool to create grooves of specific shapes, meeting the fitting requirements of screws, nuts, and tools. It is widely used in electronics, automotive, and machinery manufacturing industries, especially in the production of screws requiring high-precision threads or special groove shapes. It can efficiently complete automated batch processing, improving product consistency and assembly reliability. In traditional grinding machines, the high-speed friction between the cutting tool and the workpiece during processing generates a large amount of heat, causing the tool temperature to rise sharply. High temperatures not only accelerate tool wear and reduce cutting efficiency but can also cause thermal deformation or burning on the workpiece surface, affecting machining accuracy and product yield.

[0003] Existing screw processing equipment mostly uses external spray coolant. The coolant can only remove some heat through surface contact, which is not enough to effectively reduce the high temperature inside the tool, resulting in low cooling efficiency. Moreover, open spray systems are prone to coolant splashing and evaporation, which not only increases the cost of consumables but may also pollute the environment. Therefore, we propose a precision grinding machine. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a precision knife sharpening machine. By incorporating a cooling channel within the rotating shaft of the cutting blade, and combining this with a sealed connection design of the rotating block, fixed sleeve, and inlet and outlet channels in the coolant circulation mechanism, the coolant is directly circulated into the knife during the cutting process. Driven by a coolant circulation pump, the coolant forms a closed-loop circulation between the water tank and the cooling channel through the inlet and outlet pipes, thus solving the problems mentioned earlier.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a precision grinding machine, comprising a main body, a turntable mounted on the top center of the main body, four sets of clamping seats mounted on the turntable, cutting components on both the left and right sides of the turntable, and a feeding component mounted on the top front of the main body; the cutting component includes a mounting block, a rotating shaft rotatably passing through the mounting block, a cutting blade fixedly sleeved at the end of the rotating shaft near the turntable, a lifting mechanism for raising and lowering the mounting block is installed inside the main body, and a drive mechanism for rotating the cutting blade is also installed inside the main body, a cooling channel is provided inside the rotating shaft, a protective cover is fixedly mounted on the side of the mounting block away from the cutting blade, and a coolant circulation mechanism is installed on the protective cover.

[0006] Preferably, the lifting mechanism includes a lifting cylinder, a fixed plate is fixedly installed on the rear side of the inner side of the equipment body, the lifting cylinder is fixedly installed on the bottom front side of the fixed plate, a sliding plate is slidably installed on the front side of the fixed plate, the output shaft end of the lifting cylinder is fixedly connected to the bottom side of the sliding plate, a lifting plate is fixedly installed on the top of the sliding plate, and the mounting block is fixedly installed on the front side of the lifting plate.

[0007] Preferably, the drive mechanism includes a mounting frame, which is fixedly mounted on the front side of the sliding plate. A rotating rod is rotatably mounted on the mounting frame. A drive motor is also fixedly mounted on the front side of the sliding plate. One end of the rotating rod near the drive motor is fixedly connected to the output shaft end of the drive motor. A second pulley is fixedly sleeved on the rotating rod. A first pulley is fixedly sleeved on the rotating shaft. A belt is tensioned between the first pulley and the second pulley.

[0008] Preferably, the coolant circulation mechanism includes a rotating block, which is sleeved on the end of the rotating shaft away from the cutting blade. The upper and lower sides of the rotating block are respectively provided with a liquid inlet channel and a liquid outlet channel. The input end of the cooling channel is connected to the liquid inlet channel, and the output end of the cooling channel is connected to the liquid outlet channel. A fixed sleeve is rotatably sleeved on the rotating block. The fixed sleeve is fixedly installed on the protective cover. The upper and lower sides of the fixed sleeve are respectively provided with a liquid inlet and a liquid outlet. The liquid inlet is connected to the liquid inlet channel, and the liquid outlet is connected to the liquid outlet channel. Several bearings are provided between the rotating block and the fixed sleeve. A coolant delivery mechanism is installed on the rear side of the equipment body.

[0009] Preferably, the coolant delivery mechanism includes a water tank, which is located at the rear bottom of the equipment body. A coolant circulation pump is located on the left side of the water tank. The input end of the coolant circulation pump is fixedly connected to the water tank through a pipe. The output end of the coolant circulation pump is fixedly connected to an outlet pipe. The inlet is fixedly connected to the outlet pipe through a pipe. An inlet pipe is also fixedly connected to the water tank. The outlet is fixedly connected to the inlet pipe through a pipe.

[0010] Preferably, the feeding assembly includes a vibrating feeder, which is fixedly installed on the top front side of the equipment body. A material conveying channel is also installed on the top front side of the equipment body. The output end of the vibrating feeder is connected to the input end of the material conveying channel. A sliding cylinder is also installed on the top of the equipment body. A pusher plate is slidably installed on the sliding cylinder. A material drop groove is opened on the front side of the pusher plate. The material drop groove is connected to the output end of the material conveying channel.

[0011] Preferably, a plurality of semiconductor cooling plates are provided on the bottom side of the interior of the water tank.

[0012] Preferably, the four sets of clamping seats are arranged in a circular pattern on the top of the rotary table machine.

[0013] Preferably, heat dissipation holes are provided on both the left and right sides of the device body.

[0014] Preferably, casters are installed at the four corners of the bottom of the device body.

[0015] This invention provides a precision knife sharpening machine. Compared with the prior art, it has the following advantages:

[0016] 1. This precision knife sharpening machine, by setting a cooling channel inside the rotating shaft of the cutting blade, combined with the sealed connection design of the rotating block, fixed sleeve, and inlet and outlet channels in the coolant circulation mechanism, achieves direct circulation of coolant to the inside of the knife during the cutting process. Driven by a coolant circulation pump, the coolant forms a closed-loop circulation between the water tank and the cooling channel through the inlet and outlet pipes. This avoids the splashing waste caused by traditional spraying and significantly improves heat dissipation efficiency through internal cooling. Simultaneously, the bearing design between the fixed sleeve and the rotating block ensures stable connection of the coolant channel when the rotating shaft rotates, solving the leakage or interruption problem caused by moving parts in traditional open cooling systems, achieving precise and continuous cooling. Attached Figure Description

[0017] Figure 1 This is a top view of the main structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the lifting mechanism structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the drive mechanism structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the coolant delivery mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the coolant circulation mechanism of this utility model;

[0022] Figure 6 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 7 This utility model Figure 1 Enlarged schematic diagram of the structure at point B.

[0024] In the diagram: 1. Equipment body; 2. Turntable; 3. Vibrating feeder; 4. Material conveying channel; 5. Casters; 6. Heat dissipation holes; 7. Fixing plate; 8. Sliding plate; 9. Lifting cylinder; 10. Drive motor; 11. Mounting frame; 12. Lifting plate; 13. Protective cover; 14. Mounting block; 15. Rotating shaft; 16. Belt pulley one; 17. Belt pulley two; 18. Belt; 19. Rotating rod; 20. Water tank; 21. Semiconductor cooling chip; 22. Coolant circulation pump; 23. Discharge pipe; 24. Inlet pipe; 25. Cooling channel; 26. Rotating block; 27. Fixing sleeve; 28. Inlet channel; 29. ​​Discharge channel; 30. Inlet; 31. Outlet; 32. Bearing; 33. Sliding cylinder; 34. Push plate; 35. Drop chute; 36. Cutting blade; 37. Clamping seat. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-7 This utility model provides a technical solution: a precision grinding machine, including a machine body 1, a turntable machine 2 installed on the top center of the machine body 1, four sets of clamping seats 37 installed on the turntable machine 2, cutting components are provided on the left and right sides of the turntable machine 2, and a feeding component is installed on the top front side of the machine body 1.

[0027] The precision grinding machine uses the main body 1 as the main support structure. The turntable 2 at the top center drives four sets of clamping seats 37 to rotate and position. During processing, the feeding component conveys the screw to be processed to the clamping seats 37 of the turntable 2. After clamping and fixing the screw, the clamping seats 37 move sequentially to the bottom of the cutting components on the left and right sides as the turntable 2 rotates. The cutting components align with the specific position of the screw to perform grooving. The periodic rotation of the turntable 2 and the precise cutting of the cutting components work together to achieve cross-grooving of the screw.

[0028] The cutting assembly includes a mounting block 14, on which a rotating shaft 15 is rotatably mounted. A cutting blade 36 is fixedly sleeved at one end of the rotating shaft 15 near the turntable machine 2. A lifting mechanism for raising and lowering the mounting block 14 is installed inside the equipment body 1. A drive mechanism for rotating the cutting blade 36 is also installed inside the equipment body 1. A cooling channel 25 is opened inside the rotating shaft 15. A protective cover 13 is fixedly mounted on the side of the mounting block 14 away from the cutting blade 36. A coolant circulation mechanism is installed on the protective cover 13.

[0029] The lifting mechanism includes a lifting cylinder 9. A fixed plate 7 is fixedly installed on the rear side of the equipment body 1. The lifting cylinder 9 is fixedly installed on the bottom front side of the fixed plate 7. A sliding plate 8 is slidably installed on the front side of the fixed plate 7. The output shaft end of the lifting cylinder 9 is fixedly connected to the bottom side of the sliding plate 8. A lifting plate 12 is fixedly installed on the top of the sliding plate 8. A mounting block 14 is fixedly installed on the front side of the lifting plate 12.

[0030] The drive mechanism includes a mounting frame 11, which is fixedly mounted on the front side of the sliding plate 8. A rotating rod 19 is rotatably mounted on the mounting frame 11. A drive motor 10 is also fixedly mounted on the front side of the sliding plate 8. One end of the rotating rod 19 near the drive motor 10 is fixedly connected to the output shaft end of the drive motor 10. A second pulley 17 is fixedly sleeved on the rotating rod 19. A first pulley 16 is fixedly sleeved on the rotating shaft 15. A belt 18 is tensioned and sleeved between the first pulley 16 and the second pulley 17.

[0031] The coolant circulation mechanism includes a rotating block 26, which is sleeved on the end of the rotating shaft 15 away from the cutting blade 36. The upper and lower sides of the rotating block 26 are respectively provided with an inlet channel 28 and an outlet channel 29. The input end of the cooling channel 25 is connected to the inlet channel 28, and the output end of the cooling channel 25 is connected to the outlet channel 29. A fixed sleeve 27 is rotatably sleeved on the rotating block 26. The fixed sleeve 27 is fixedly installed on the protective cover 13. The upper and lower sides of the fixed sleeve 27 are respectively provided with an inlet port 30 and an outlet port 31. The inlet port 30 is connected to the inlet channel 28, and the outlet port 31 is connected to the outlet channel 29. Several bearings 32 are provided between the rotating block 26 and the fixed sleeve 27. A coolant delivery mechanism is installed on the rear side of the equipment body 1.

[0032] The coolant delivery mechanism includes a water tank 20, which is located at the bottom rear of the equipment body 1. A coolant circulation pump 22 is located on the left side of the water tank 20. The input end of the coolant circulation pump 22 is fixedly connected to the water tank 20 through a pipe. The output end of the coolant circulation pump 22 is fixedly connected to an outlet pipe 23. The inlet 30 is fixedly connected to the outlet pipe 23 through a pipe. An inlet pipe 24 is also fixedly connected to the water tank 20. The outlet 31 is fixedly connected to the inlet pipe 24 through a pipe.

[0033] When the cutting assembly is in use, the lifting cylinder 9 pushes the sliding plate 8 and the lifting plate 12 to slide along the fixed plate 7, thereby driving the mounting block 14 and the cutting blade 36 to rise and fall, achieving precise contact or separation between the cutting blade 36 and the workpiece. The lifting cylinder 9, through the linkage of the sliding plate 8 and the lifting plate 12, precisely controls the lifting height of the cutting blade 36 to adapt to the grooving depth requirements of different workpieces. The rotating shaft 15 is fixedly sleeved on the mounting block 14, and the drive motor 10 drives the pulley 17 on the rotating rod 19 to rotate. Through the belt 18, the pulley 16 and the rotating shaft 15 rotate synchronously, causing the cutting blade 36 to rotate at high speed to groove the screw. During the grooving process, the coolant circulation pump 22 draws coolant from the water tank 20 and delivers it to the inlet 30 of the fixed sleeve 27 through the outlet pipe 23, thereby entering the inlet channel 28. The coolant then flows along the cooling channel 25 inside the rotating block 26 and the cooling channel 25 inside the rotating shaft 15. The coolant absorbs the heat generated by the cutting blade 36. The cooled liquid returns to the outlet 31 of the fixed sleeve 27 through the outlet channel 29 and flows back to the water tank 20 through the inlet pipe 24, forming a closed-loop circulation. The rotating block 26 and the fixed sleeve 27 are sealed by the bearing 32 to ensure the stable connection of the coolant channel when the rotating shaft 15 rotates.

[0034] The feeding assembly includes a vibrating feeder 3, which is fixedly installed on the top front side of the equipment body 1. A conveying channel 4 is also installed on the top front side of the equipment body 1. The output end of the vibrating feeder 3 is connected to the input end of the conveying channel 4. A sliding cylinder 33 is also installed on the top of the equipment body 1. A pusher plate 34 is slidably installed on the sliding cylinder 33. A discharge chute 35 is opened on the front side of the pusher plate 34. The discharge chute 35 is connected to the output end of the conveying channel 4.

[0035] When the feeding assembly is in use, the vibrating feeder 3 arranges the screws to be processed in an orderly manner and conveys them to the input end of the conveying channel 4. The conveying channel 4 guides the screws to the end. At this time, the sliding cylinder 33 drives the pusher plate 34 to slide forward. The discharge groove 35 on the front side of the pusher plate 34 is aligned with the output end of the conveying channel 4, pushing the screws into the discharge groove 35. The discharge groove 35 accurately delivers the screws to the clamping seat 37 above the turntable machine 2, completing the feeding process.

[0036] Several semiconductor cooling chips 21 are installed on the bottom side of the inside of the water tank 20. The semiconductor cooling chips 21 on the bottom side of the inside of the water tank 20 actively cool through the Peltier effect, cool the circulating coolant, maintain the constant temperature of the coolant in the water tank 20, and ensure that the coolant continuously and efficiently participates in the heat dissipation of the cutting process.

[0037] Four sets of clamping seats 37 are arranged in a circle on the top of the rotary table machine 2, and pass through the feeding, cutting and discharging stations in sequence as the rotary table machine 2 rotates.

[0038] The device body 1 has heat dissipation holes 6 on both the left and right sides to dissipate the heat generated during operation.

[0039] Casters 5 are installed at the four corners of the bottom of the equipment body 1, which facilitates the adjustment of the equipment position or maintenance, and can also be used to fix the stability of the equipment during operation through the braking function.

[0040] Working Principle: This precision grinding machine uses the main body 1 as its main support structure. The rotary table 2 at the top center drives four sets of clamping seats 37 for rotational positioning. During processing, the vibrating feed plate 3 arranges the screws to be processed in an orderly manner and conveys them to the input end of the feeding channel 4. The feeding channel 4 guides the screws to the end. At this time, the sliding cylinder 33 drives the pusher plate 34 to slide forward. The discharge groove 35 on the front side of the pusher plate 34 aligns with the output end of the feeding channel 4, pushing the screw into the discharge groove 35. The discharge groove 35 precisely delivers the screw to the clamping seats 37 of the rotary table 2, completing the feeding process. After clamping and fixing the screw, the clamping seats 37 move sequentially to below the cutting blades 36 on the left and right sides as the rotary table 2 rotates. The lifting cylinder 9 pushes the sliding plate 8 and the lifting plate 12 to slide along the fixed plate 7, which drives the mounting block 14 and the cutting blade 36 to rise and fall, so as to achieve precise contact or separation between the cutting blade 36 and the workpiece. The lifting cylinder 9 precisely controls the lifting height of the cutting blade 36 through the linkage of the sliding plate 8 and the lifting plate 12, adapting to the grooving depth requirements of different workpieces. The rotating shaft 15 is fixedly sleeved on the mounting block 14, and the drive motor 10 drives the pulley 17 on the rotating rod 19 to rotate. The belt 18 drives the pulley 16 and the rotating shaft 15 to rotate synchronously, so that the cutting blade 36 rotates at high speed to groove the screw. The periodic rotation of the turntable machine 2 and the precise cutting of the two sets of cutting blades 36 work together to achieve cross grooving of the screw.

[0041] During the grooving process of the cutting blade 36, the coolant circulation pump 22 draws coolant from the water tank 20 and delivers it to the inlet 30 of the fixed sleeve 27 through the outlet pipe 23, thereby entering the inlet channel 28. The coolant flows along the cooling channel 25 inside the rotating block 26 and absorbs the heat generated by the cutting blade 36. The cooled liquid returns to the outlet 31 of the fixed sleeve 27 through the outlet channel 29 and flows back to the water tank 20 through the inlet pipe 24, forming a closed loop. The semiconductor cooling chip 21 on the bottom side of the water tank 20 actively cools the circulating coolant through the Peltier effect, maintaining a constant temperature of the coolant in the water tank 20. The rotating block 26 and the fixed sleeve 27 are sealed by the bearing 32 to ensure stable connection of the coolant channel when the rotating shaft 15 rotates.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision tool sharpener comprising a device body (1), characterized in that: A turntable machine (2) is installed on the top center of the equipment body (1). Four sets of clamping seats (37) are installed on the turntable machine (2). Cutting components are provided on both the left and right sides of the turntable machine (2). A feeding component is installed on the top front side of the equipment body (1). The cutting assembly includes a mounting block (14), on which a rotating shaft (15) is rotatably mounted. A cutting blade (36) is fixedly sleeved at one end of the rotating shaft (15) near the turntable machine (2). A lifting mechanism for raising and lowering the mounting block (14) is installed inside the equipment body (1), and a drive mechanism for rotating the cutting blade (36) is also installed inside the equipment body (1). A cooling channel (25) is opened inside the rotating shaft (15). A protective cover (13) is fixedly mounted on the side of the mounting block (14) away from the cutting blade (36), and a coolant circulation mechanism is installed on the protective cover (13).

2. The precision knife-sharpening machine of claim 1, wherein: The lifting mechanism includes a lifting cylinder (9), a fixed plate (7) is fixedly installed on the rear side of the inner side of the equipment body (1), the lifting cylinder (9) is fixedly installed on the bottom front side of the fixed plate (7), a sliding plate (8) is slidably installed on the front side of the fixed plate (7), the output shaft end of the lifting cylinder (9) is fixedly connected to the bottom side of the sliding plate (8), a lifting plate (12) is fixedly installed on the top of the sliding plate (8), and the mounting block (14) is fixedly installed on the front side of the lifting plate (12).

3. The precision knife-sharpening machine of claim 2, wherein: The drive mechanism includes a mounting frame (11), which is fixedly mounted on the front side of the sliding plate (8). A rotating rod (19) is rotatably mounted on the mounting frame (11). A drive motor (10) is also fixedly mounted on the front side of the sliding plate (8). One end of the rotating rod (19) near the drive motor (10) is fixedly connected to the output shaft end of the drive motor (10). A second pulley (17) is fixedly sleeved on the rotating rod (19). A first pulley (16) is fixedly sleeved on the rotating shaft (15). A belt (18) is tensioned between the first pulley (16) and the second pulley (17).

4. The precision knife-sharpening machine of claim 1, wherein: The coolant circulation mechanism includes a rotating block (26), which is sleeved on the end of the rotating shaft (15) away from the cutting blade (36). The upper and lower sides of the rotating block (26) are respectively provided with an inlet channel (28) and an outlet channel (29). The input end of the cooling channel (25) is connected to the inlet channel (28), and the output end of the cooling channel (25) is connected to the outlet channel (29). A fixed sleeve (27) is rotatably sleeved on the rotating block (26). The fixed sleeve (27) is fixedly installed on the protective cover (13). The upper and lower sides of the fixed sleeve (27) are respectively provided with an inlet port (30) and an outlet port (31). The inlet port (30) is connected to the inlet channel (28), and the outlet port (31) is connected to the outlet channel (29). Several bearings (32) are provided between the rotating block (26) and the fixed sleeve (27). A coolant delivery mechanism is installed on the rear side of the equipment body (1).

5. The precision knife-sharpening machine of claim 4, wherein: The coolant delivery mechanism includes a water tank (20), which is located at the bottom rear side of the equipment body (1). A coolant circulation pump (22) is located on the left side of the water tank (20). The input end of the coolant circulation pump (22) is fixedly connected to the water tank (20) through a pipe. The output end of the coolant circulation pump (22) is fixedly connected to an outlet pipe (23). The inlet (30) is fixedly connected to the outlet pipe (23) through a pipe. An inlet pipe (24) is also fixedly connected to the water tank (20). The outlet (31) is fixedly connected to the inlet pipe (24) through a pipe.

6. The precision knife-sharpening machine of claim 1, wherein: The feeding assembly includes a vibrating feeder (3), which is fixedly installed on the top front side of the equipment body (1). A conveying channel (4) is also installed on the top front side of the equipment body (1). The output end of the vibrating feeder (3) is connected to the input end of the conveying channel (4). A sliding cylinder (33) is also installed on the top of the equipment body (1). A pusher plate (34) is slidably installed on the sliding cylinder (33). A dropping groove (35) is opened on the front side of the pusher plate (34). The dropping groove (35) is connected to the output end of the conveying channel (4).

7. The precision knife-sharpening machine of claim 5, wherein: Several semiconductor cooling chips (21) are provided on the bottom side of the interior of the water tank (20).

8. The precision knife-sharpening machine of claim 1, wherein: The four sets of clamping seats (37) are arranged in a circular pattern on the top of the turntable machine (2).

9. The precision knife-sharpening machine of claim 1, wherein: The device body (1) has heat dissipation holes (6) on both the left and right sides.

10. The precision knife-sharpening machine of claim 1, wherein: Casters (5) are installed at the four corners of the bottom of the equipment body (1).

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