Cooling liquid follow-up adjustable fine boring cutter

Abstract

The invention provides a cooling liquid follow-up adjustable fine boring cutter which comprises a cutter body, the cutter body comprises a connecting part and an assembling part, a liquid inlet is formed in the connecting part, an assembling hole is formed in the assembling part, an assembling part is slidably arranged in the assembling hole, a blade is installed at one end of the assembling part, and a cooling channel is formed in the assembling part; the two ends of the cooling channel are provided with a first connector and a liquid outlet, the first connector communicates with the movable cavity, and the liquid outlet corresponds to the blade. A movable cavity is communicated between the liquid inlet and the assembly hole, a cooling hose communicated with the liquid inlet and the first connector is arranged in the movable cavity, and an adjusting part for driving the assembly part to move is further arranged in the movable cavity; a movable cavity and a cooling channel are formed, a cooling hose is communicated with a liquid inlet and the cooling channel, cutting fluid can flow into the cooling channel through the cooling hose, meanwhile, the position of a liquid outlet is consistent with the position of a blade all the time, the cutting fluid continuously cools the blade and a workpiece, the machining precision and the tool durability are improved, cuttings are washed away in time, and the machining efficiency is improved. And the machined surface is prevented from being scratched due to chip accumulation.

Description

Technical Field

[0001] This application relates to the technical field of tool systems, and particularly to a coolant follow-up adjustable fine boring tool. Background Art

[0002] In machining, a fine boring tool is used for precision machining of holes, and its machining accuracy directly affects the quality and performance of products. During the boring process, a large amount of heat is generated between the tool and the workpiece, and at the same time, the chips generated by boring need to be discharged in time. Therefore, a cooling channel is opened on the tool body, and the cutting fluid rushes towards the blade through the cooling channel to cool and lubricate the blade. In order to improve the machining accuracy of the hole, the axial distance of the blade relative to the tool body of the existing fine boring tool can be adjusted to adapt to different drilling requirements. However, the position where the cutting fluid flushes out from the tool body is fixed and cannot move with the blade. As a result, the cutting fluid cannot effectively dissipate heat from the blade in time, and the chips cannot be washed away and accumulate in the machining area, leading to increased tool wear, heat deformation of the workpiece, and the accumulated chips may scratch the machined surface, exacerbating tool wear and even causing tool damage, affecting machining accuracy and surface quality. Summary of the Invention

[0003] The purpose of this application is to address the above problems and provide a coolant follow-up adjustable fine boring tool, including: A tool body, the tool body includes a connecting portion and an assembling portion integrally connected in a first direction. The connecting portion is used to connect external equipment, a liquid inlet is opened on the connecting portion, an assembling hole extending in a second direction is opened on the assembling portion, the second direction is perpendicular to the first direction, and an activity cavity is communicated between the liquid inlet and the assembling hole; An assembling part, the assembling part is slidably arranged in the assembling hole, one end of the assembling part along the second direction extends out of the assembling hole and is provided with a blade, a cooling channel is opened in the assembling part, and both ends of the cooling channel have a first interface and a liquid outlet, the first interface is communicated with the activity cavity, and the liquid outlet is arranged corresponding to the blade; An adjusting part, the adjusting part is arranged on the assembling part and is used to drive the assembling part to move along the second direction; A cooling hose, the cooling hose is arranged in the activity cavity, and both ends of the cooling hose are respectively communicated with the liquid inlet and the first interface.

[0004] According to the technical solutions provided by certain embodiments of the present application, the fitting includes a movable shaft, the movable shaft is slidably disposed in the fitting hole along the second direction, a first channel is formed inside the movable shaft, and both ends of the first channel have the first interface and the second interface; a tool holder is fixed to one end of the movable shaft along the second direction, a blade is mounted on the tool holder, a second channel is formed inside the tool holder, and both ends of the second channel have the third interface and the liquid outlet, and the second interface and the third interface are communicated to form the cooling channel by the first channel and the second channel.

[0005] According to the technical solutions provided by certain embodiments of the present application, the direction of the liquid outlet is the same as the direction of the cutting edge of the blade.

[0006] According to the technical solutions provided by certain embodiments of the present application, the adjusting member includes a rotating joint, the rotating joint is rotatably connected to one end of the fitting hole away from the tool holder, a screw rod extending along the second direction is fixed to the rotating joint, and a connecting hole extending along the second direction is formed at one end of the movable shaft close to the rotating joint, and the screw rod is in threaded cooperation with the connecting hole.

[0007] According to the technical solutions provided by certain embodiments of the present application, a sliding groove extending along the second direction is formed on the outer peripheral surface of the movable shaft, and an anti-rotation member is further provided on the fitting portion, and the anti-rotation member abuts against the sliding groove and is in sliding contact with the sliding groove.

[0008] According to the technical solutions provided by certain embodiments of the present application, a fixing groove is formed on the outer peripheral surface of the movable shaft, and a locking bolt is further provided on the fitting portion, and the locking bolt can penetrate through the side wall of the fitting hole and abut against the fixing groove.

[0009] According to the technical solutions provided by certain embodiments of the present application, a first sealing ring is provided between the second interface and the third interface.

[0010] According to the technical solutions provided by certain embodiments of the present application, a rotating groove is formed at one end of the rotating joint away from the screw rod, the inner contour of the rotating groove matches the outer contour of a hexagon wrench, and a scale disk is further sleeved around the rotating groove on the rotating joint.

[0011] According to the technical solutions provided by certain embodiments of the present application, a high-pressure nozzle is further provided in the liquid outlet.

[0012] Compared with the prior art, the beneficial effects of the present application are as follows: The present application provides a coolant follow-up adjustable fine boring tool, including a tool body. The tool body includes a connecting portion and an assembling portion integrally connected in a first direction. The connecting portion is used to connect external equipment, and a liquid inlet is provided on the connecting portion. An assembling hole extending in a second direction is provided on the assembling portion. The second direction is perpendicular to the first direction, and an activity cavity is communicated between the liquid inlet and the assembling hole. A fitting is slidably arranged in the assembling hole. One end of the fitting in the second direction extends out of the assembling hole and is provided with a blade. A cooling channel is provided in the fitting. Both ends of the cooling channel have a first interface and a liquid outlet. The first interface is communicated with the activity cavity, and the liquid outlet is arranged corresponding to the blade. An adjusting member is further provided on the fitting for driving the fitting to move in the second direction. A cooling hose is arranged in the activity cavity, and both ends of the cooling hose are respectively communicated with the liquid inlet and the first interface. By providing the fitting and the adjusting member on the tool body and through the mutual cooperation between the fitting and the adjusting member, the distance between the blade and the axis of the tool body can be adjusted, so as to adapt to different boring requirements. By providing the activity cavity in the tool body and the cooling channel in the fitting, and arranging the cooling hose in the activity cavity, the cooling hose is communicated with the liquid inlet and the cooling channel, so that the cutting fluid can also flow into the cooling channel through the cooling hose when the fitting moves relative to the tool body. At the same time, a liquid outlet is provided corresponding to the blade on the fitting, and the position of the liquid outlet and the blade always remains the same. The cutting fluid can continuously cool the blade and the processed surface of the workpiece, reduce thermal deformation, maintain the hardness of the tool, thereby improving the machining accuracy and tool durability. In addition, the cutting fluid can also wash away the chips in time during the machining process, avoiding the accumulation of chips in the machining area, resulting in increased tool wear and scratching of the machined surface.

[0013] It should be understood that the description of technical features, technical solutions, beneficial effects or similar languages in the present application does not imply that all features and advantages can be achieved in any single embodiment. On the contrary, it can be understood that the description of features or beneficial effects means that at least one embodiment includes specific technical features, technical solutions or beneficial effects. Therefore, the description of technical features, technical solutions or beneficial effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in this embodiment can be combined in any appropriate manner. Those skilled in the art will understand that an embodiment can be implemented without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in specific embodiments that do not embody all embodiments. Description of the Drawings

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of a coolant follow-up adjustable fine boring tool provided by an embodiment of the present application; Figure 2 It is a sectional view of a coolant follow-up adjustable fine boring tool provided by an embodiment of the present application; Figure 3 It is a perspective view of a coolant follow-up adjustable fine boring tool provided by an embodiment of the present application.

[0016] The text markings in the figure are indicated as: 1. Tool body; 2. Movable shaft; 3. Tool clamp; 4. Blade; 5. Cooling hose; 6. Rotating joint; 7. Screw; 8. Locking bolt; 9. High-pressure nozzle; 11. Connecting part; 12. Assembly part; 13. First sealing ring; 14. Second sealing ring; 101. Liquid inlet; 102. Assembly hole; 103. Movable cavity; 201. First interface; 202. Connecting hole; 211. Liquid inlet section; 212. First sub-section; 213. Second sub-section; 214. First connecting section; 301. Liquid outlet; 311. Second connecting section; 312. Liquid outlet section; 601. Rotating groove. Detailed implementation manners

[0017] In order to enable those skilled in the art to better understand the technical solutions of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present application. Specifically, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the protection scope of the present invention.

[0018] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or devices.

[0019] As mentioned in the background art, to solve the problems existing in the prior art, this embodiment provides a coolant follow-up adjustable fine boring tool, including: A tool body 1, the tool body 1 includes a connecting portion 11 and an assembling portion 12 integrally connected in a first direction. The connecting portion 11 is used to connect an external device, a liquid inlet 101 is formed on the connecting portion 11, and an assembling hole 102 extending in a second direction is formed on the assembling portion 12. The second direction is perpendicular to the first direction, and a movable cavity 103 is communicated between the liquid inlet 101 and the assembling hole 102; A fitting, the fitting is slidably disposed in the assembling hole 102. One end of the fitting in the second direction extends out of the assembling hole 102 and is provided with a blade 4. A cooling channel is formed in the fitting, and both ends of the cooling channel have a first interface 201 and a liquid outlet 301. The first interface 201 is communicated with the movable cavity 103, and the liquid outlet 301 is arranged corresponding to the blade 4; An adjusting member, the adjusting member is disposed on the fitting and is used to drive the fitting to move in the second direction; A cooling hose 5, the cooling hose 5 is disposed in the movable cavity 103, and both ends of the cooling hose 5 are respectively communicated with the liquid inlet 101 and the first interface 201.

[0020] As Figures 1-3 shown, the first direction is the Figure 1 horizontal direction in Figure 2In the vertical direction, both the connecting portion 11 and the assembling portion 12 are approximately cylindrical structures. The connecting portion 11 and the assembling portion 12 are coaxially arranged in the first direction and integrally connected. The connecting portion 11 is used to connect an external device, so that the tool body 1 can rotate around its own rotation axis under the drive of the external device. The liquid inlet 101 is opened at the central position on the side of the connecting portion 11 close to the assembling portion 12. The assembling hole 102 is opened at one end of the assembling portion 12 far from the connecting portion 11. The assembling hole 102 is approximately a cylindrical structure. The fitting is arranged in the assembling hole 102 in the second direction. One end of the fitting extends out of the assembling hole 102 and a blade 4 is installed. By driving the fitting to move in the second direction through an adjusting member, the distance between the blade 4 and the axis of the tool body 1 can be adjusted; The movable cavity 103 is opened on the assembling portion 12, communicating the liquid inlet 101 and the assembling hole 102. The first interface 201 is opened on the outer peripheral surface of the fitting, corresponding to and communicating with the movable cavity 103. The liquid outlet 301 is opened at one end of the fitting in the second direction, corresponding to the position of the blade 4. The first interface 201 and the liquid outlet 301 are communicated to form a cooling channel; A cooling hose 5 is arranged in the movable cavity 103. One end of the cooling hose 5 is installed on the tool body 1 by a screw. A second sealing ring 14 is also arranged between it and the liquid inlet 101. When the screw is screwed into the tool body 1, the cooling hose 5 can be pressed, and at the same time the second sealing ring 14 is also pressed. The second sealing ring 14 plays a sealing role to prevent the cutting fluid from leaking from the interface. The other end of the cooling hose 5 is threadedly connected to the fitting and sealed with sealant. The size of the movable cavity 103 can accommodate the cooling hose 5 to move along with the fitting when it moves in the second direction.

[0021] Through the mutual cooperation between the fitting and the adjusting member, the distance between the blade 4 and the axis of the tool body 1 can be adjusted to adapt to different boring requirements; By opening the movable cavity 103 in the tool body 1 and opening the cooling channel on the fitting, and arranging the cooling hose 5 in the movable cavity 103, the cooling hose 5 communicates the liquid inlet 101 and the cooling channel, so that the cutting fluid can also flow into the cooling channel through the cooling hose 5 when the fitting moves relative to the tool body 1. At the same time, the liquid outlet 301 corresponding to the blade 4 is opened on the fitting, and the position of the liquid outlet 301 always remains consistent with that of the blade 4. The cutting fluid can continuously cool the blade 4 and the machined surface of the workpiece, reduce thermal deformation, maintain the hardness of the tool, thereby improving the machining accuracy and tool durability. In addition, the cutting fluid can also wash away the chips in time during the machining process to avoid the chips accumulating in the machining area, resulting in increased tool wear and scratching the machined surface.

[0022] In a preferred embodiment, the fitting includes a movable shaft 2 which is slidably arranged in the assembly hole 102 along a second direction. A first channel is formed inside the movable shaft 2, and both ends of the first channel are provided with a first interface 201 and a second interface. A tool holder 3 is fixed to one end of the movable shaft 2 along the second direction. A blade 4 is mounted on the tool holder 3. A second channel is formed inside the tool holder 3, and both ends of the second channel are provided with a third interface and a liquid outlet 301. The second interface and the third interface are communicated so that the first channel and the second channel form a cooling channel.

[0023] As Figure 3 shown, one end of the movable shaft 2 close to the tool holder 3 has a convex portion and is provided with a threaded hole. One end of the tool holder 3 close to the movable shaft 2 is provided with a groove matching the convex portion. The tool holder 3 is also provided with a through hole penetrating itself. After a bolt passes through the through hole and is threadedly connected with the threaded hole, the movable shaft 2 and the tool holder 3 can be fixed to each other. In this embodiment, the first channel includes a liquid inlet section 211, a first sub-section 212, a second sub-section 213 and a first connection section 214 which are sequentially communicated. A first blind hole is formed on the outer peripheral surface of the movable shaft 2 along a first direction towards its central axis position. The first blind hole is the above-mentioned liquid inlet section 211, and the open end of the first blind hole is the above-mentioned first interface 201. A second blind hole is formed on the end surface of the convex portion of the movable shaft 2 along the second direction towards the liquid inlet section 211 until the second blind hole communicates with the first blind hole, and a plug is arranged at the open end of the second blind hole. At this time, the second blind hole forms the above-mentioned first sub-section 212. A third blind hole is obliquely formed on the outer peripheral surface of the movable shaft 2 so that the third blind hole avoids the threaded hole and communicates with the second blind hole, and a plug is arranged at the open end of the third blind hole. At this time, the third blind hole forms the above-mentioned second sub-section 213. At one end of the movable shaft 2 close to the tool holder 3, a fourth blind hole is formed on the end surface on one side of the convex portion along the second direction towards the second sub-section 213 until the fourth blind hole communicates with the third blind hole. The fourth blind hole is the above-mentioned first connection section 214, and the open end of the fourth blind hole is the above-mentioned second interface. The second channel includes a second connection section 311 and a liquid outlet section 312 which are communicated. At one end of the tool holder 3 close to the movable shaft 2, a fifth blind hole is formed on the end surface on one side of the groove along the second direction. The fifth blind hole is the above-mentioned second connection section 311, and the open end of the fifth blind hole is the above-mentioned third interface. A sixth blind hole is obliquely formed on the outer peripheral surface of the tool holder 3 close to the blade 4 so that the sixth blind hole avoids the through hole and communicates with the fifth blind hole. The sixth blind hole is the above-mentioned liquid outlet section 312, and the open end of the sixth blind hole is the above-mentioned liquid outlet 301. In other embodiments of the present application, the first channel and the second channel can also adopt other structures, as long as the threaded hole and the through hole are reasonably avoided and the connection between the movable shaft 2 and the tool holder 3 is not affected. No special limitation is made here.

[0024] In a preferred embodiment, the direction of the liquid outlet 301 is the same as the direction of the cutting edge of the blade 4.

[0025] AsFigure 2 As shown, in the existing fine boring tool structure, the liquid outlet 301 is opened on the tool body 1, on one side of the cutting blade 4. In this embodiment, the liquid outlet 301 is opened on the tool holder 3, and the orientation of the liquid outlet 301 is the same as the orientation of the cutting edge of the cutting blade 4. When the cutting blade 4 is cutting, the cutting fluid is ejected from the liquid outlet 301, which can timely wash away the chips generated during the cutting process. At the same time, the cutting fluid flushing along the cutting direction of the cutting blade 4 can prevent the chips from scratching the machined surface.

[0026] In a preferred embodiment, the adjusting member includes a rotating joint 6. The rotating joint 6 is rotatably connected to the end of the assembly hole 102 away from the tool holder 3. A screw rod 7 extending in the second direction is fixed on the rotating joint 6. A connecting hole 202 extending in the second direction is opened at one end of the movable shaft 2 close to the rotating joint 6. The screw rod 7 is in threaded cooperation with the connecting hole 202.

[0027] In a preferred embodiment, a sliding groove extending in the second direction is opened on the outer peripheral surface of the movable shaft 2. An anti-rotation member is further provided on the assembly portion 12. The anti-rotation member abuts against the sliding groove and is in sliding contact with the sliding groove.

[0028] As Figure 2 shown, the rotating joint 6 is rotatably connected to the end of the assembly hole 102 away from the tool holder 3. A screw rod 7 extending into the assembly hole 102 in the second direction is fixed on the rotating joint 6. A connecting hole 202 is opened at one end of the movable shaft 2 away from the convex portion. The connecting hole 202 and the threaded hole are coaxially arranged and are both opened along the central axis of the movable shaft 2. A rotating nut is fixed in the connecting hole 202. The screw rod 7 is in threaded cooperation with the rotating nut. The anti-rotation member is fixed on the assembly portion 12. The extending direction of the anti-rotation member is perpendicular to the movable shaft 2. One end of the anti-rotation member close to the movable shaft 2 has a wedge-shaped end face. A sliding groove is opened on the outer peripheral surface of the movable shaft 2. The bottom surface of the sliding groove is attached to the wedge-shaped end face of the anti-rotation member, so that the anti-rotation member can be in sliding contact with the sliding groove. By setting the anti-rotation member to limit the movement of the movable shaft 2, when the rotating joint 6 rotates, it drives the screw rod 7 to rotate. Due to the action of the anti-rotation member, the movable shaft 2 cannot rotate. Under the interaction of the screw rod 7 and the rotating nut, the movable shaft 2 generates a displacement in the second direction, thereby driving the cutting blade 4 to adjust the distance between the cutting blade 4 and the axis of the tool body 1.

[0029] In a preferred embodiment, a fixing groove is opened on the outer peripheral surface of the movable shaft 2. A locking bolt 8 is further provided on the assembly portion 12. The locking bolt 8 can penetrate the side wall of the assembly hole 102 and abut against the fixing groove.

[0030] As Figure 1 and Figure 2As shown, the fixing groove is formed on the outer peripheral surface of the movable shaft 2. The locking bolt 8 penetrates through the side wall of the assembly hole 102 from one side of the assembly part 12 in a direction perpendicular to the movable shaft 2 and abuts against the fixing groove. The locking bolt 8 is threadedly connected to the assembly part 12 and is used to limit and fix the movable shaft 2 after adjusting the distance between the cutting blade 4 and the axis of the tool body 1, preventing the movable shaft 2 from moving during the boring process and affecting the machining quality of the workpiece.

[0031] In a preferred embodiment, a first sealing ring 13 is provided between the second interface and the third interface.

[0032] As Figure 3 shown, the first sealing ring 13 is arranged between the second interface and the third interface. When the tool holder 3 is fixed to the movable shaft 2, the first sealing ring 13 can be pressed tightly so that it fills between the second interface and the third interface, playing a sealing role and avoiding leakage when the cutting fluid enters the second channel from the first channel.

[0033] In a preferred embodiment, a rotating groove 601 is formed at one end of the rotary joint 6 away from the screw rod 7. The inner contour of the rotating groove 601 matches the outer contour of a hexagon wrench. A scale disk is also sleeved around the rotating groove 601 on the rotary joint 6.

[0034] As Figure 3 shown, the rotating groove 601 is formed at the central position of one end of the rotary joint 6 away from the screw rod 7. The rotating groove 601 can be inserted and matched with the hexagon wrench. By rotating the rotary joint 6 with the hexagon wrench, the movable shaft 2 can be moved along the second direction to adjust the position of the cutting blade 4. At the same time, by setting the scale disk, the rotation angle of the rotary joint 6 can be intuitively grasped, further realizing the precise adjustment of the distance between the cutting blade 4 and the axis of the tool body 1.

[0035] In a preferred embodiment, a high-pressure nozzle 9 is further provided in the liquid outlet 301.

[0036] As Figure 3 shown, the high-pressure nozzle 9 is arranged in the above-mentioned liquid outlet section 312 and is used to further increase the pressure when the cutting fluid is sprayed out from the liquid outlet 301, so that the cutting fluid is accurately sprayed onto the cutting edge of the cutting blade 4, enhancing the chip removal effect.

[0037] In this text, specific examples are used to elaborate on the principles and implementation manners of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application. The above is only the preferred implementation manner of this application. It should be noted that due to the limited nature of written expression and objectively infinite specific structures, for those of ordinary skill in the art, without departing from the principles of this invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of this application.

Claims

1. A coolant servo-adjustable fine boring tool, characterized in that Comprising: A tool body (1), the tool body (1) includes a connecting portion (11) and an assembling portion (12) integrally connected in a first direction, the connecting portion (11) is used to connect an external device, a liquid inlet (101) is provided on the connecting portion (11), an assembling hole (102) extending in a second direction is provided on the assembling portion (12), the second direction is perpendicular to the first direction, and an activity cavity (103) is communicated between the liquid inlet (101) and the assembling hole (102); A fitting, the fitting is slidably disposed in the assembling hole (102), one end of the fitting in the second direction extends out of the assembling hole (102) and is installed with a blade (4), a cooling channel is provided in the fitting, and both ends of the cooling channel have a first interface (201) and a liquid outlet (301), the first interface (201) communicates with the activity cavity (103), and the liquid outlet (301) is arranged corresponding to the blade (4); An adjusting member, the adjusting member is disposed on the fitting and is used to drive the fitting to move in the second direction; A cooling hose (5), the cooling hose (5) is disposed in the activity cavity (103), and both ends of the cooling hose (5) are respectively communicated with the liquid inlet (101) and the first interface (201).

2. The coolant follow-up adjustable fine boring tool according to claim 1, characterized in that, The fitting includes a movable shaft (2), the movable shaft (2) is slidably disposed in the assembling hole (102) in the second direction, a first channel is provided inside the movable shaft (2), and both ends of the first channel have the first interface (201) and a second interface; one end of the movable shaft (2) in the second direction is fixed with a tool holder (3), the blade (4) is installed on the tool holder (3), a second channel is provided inside the tool holder (3), and both ends of the second channel have a third interface and the liquid outlet (301), and the second interface and the third interface are communicated so that the first channel and the second channel form the cooling channel.

3. The coolant follow-up adjustable fine boring tool according to claim 1, characterized in that, The direction of the liquid outlet (301) is the same as the direction of the cutting edge of the blade (4).

4. The coolant follow-up adjustable fine boring tool according to claim 2, characterized in that The adjusting member includes a rotary joint (6), the rotary joint (6) is rotatably connected to one end of the assembling hole (102) away from the tool holder (3), a screw rod (7) extending in the second direction is fixed on the rotary joint (6), and a connecting hole (202) extending in the second direction is provided at one end of the movable shaft (2) close to the rotary joint (6), and the screw rod (7) is in threaded cooperation with the connecting hole (202).

5. The coolant follow-up adjustable fine boring tool according to claim 2, characterized in that, A sliding groove extending in the second direction is provided on the outer peripheral surface of the movable shaft (2), and an anti-rotation member is further provided on the assembling portion (12), and the anti-rotation member abuts in the sliding groove and is in sliding contact with the sliding groove.

6. The coolant follow-up adjustable fine boring tool according to claim 2, wherein A fixing groove is provided on the outer peripheral surface of the movable shaft (2), and a locking bolt (8) is further provided on the assembling portion (12), and the locking bolt (8) can penetrate through the side wall of the assembling hole (102) and abut in the fixing groove.

7. The coolant follow-up adjustable fine boring tool according to claim 2, characterized in that, A first sealing ring (13) is provided between the second interface and the third interface.

8. A coolant follow-up adjustable fine boring tool according to claim 4, characterized in that, One end of the rotary joint (6) far from the screw rod (7) is provided with a rotary groove (301), the inner contour of the rotary groove (601) matches the outer contour of a hexagonal wrench, and a dial is also sleeved on the rotary joint (6) around the rotary groove (601).

9. The coolant follow-up adjustable fine boring tool according to claim 1, characterized in that, A high-pressure spray head (9) is further arranged in the liquid outlet (301).

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