Diamond drill grinding head with self-consumption mode control cooling water path

Abstract

The present application relates to a kind of diamond drill grinding head of self-consumption mode control cooling water path, belong to drill grinding head field.It includes: drill head, grinding head, cooling water shunt baffle and drill grinding head handle;Cooling water shunt baffle is the inner wall of " convex " character shape tubular structure that leans, annular space between the inner wall of cooling water shunt baffle and the outer wall of drill grinding head handle forms the water inlet of drill head for cooling water to enter the inside of drill head and the water passage of drill head for cooling water to flow in the inside of drill head;Annular space between the inner wall of grinding head base body and the outer wall of cooling water shunt baffle forms the water inlet of grinding head for cooling water to enter the inside of grinding head, annular space between the inner wall of self-consumption water retaining nylon sheet and the outer wall of cooling water shunt baffle forms the water passage of grinding head for cooling water to flow in the inside of grinding head and the water outlet of grinding head for the grinding area of multiple grinding head teeth piece is cooled.The present application is favorable to optimize the cooling effect of grinding head, reduce grinding head load, improve processing efficiency, reduce processing cost.

Description

Technical Field

[0001] This invention relates to the field of drill bits, and more particularly to a diamond drill bit with a self-consumable cooling water circuit control. Background Technology

[0002] For washbasins made of brittle and hard non-metallic materials such as slab rock, the drain pipe requires the installation of drain pipe joints and seals. Currently, diamond drill bits are commonly used, including drill bits and grinding heads (horizontal) for machining. On drilling / milling equipment without internal cooling input, the drill bit is used to machine the drain hole, and the grinding head is used to machine the seal installation step. Drilling is performed under external cooling conditions (generally by injecting water into the basin or by direct water jetting through a pipe). Under centrifugal force, cooling is mainly achieved through atomized water, resulting in poor cooling effect and significantly impacting chip removal capacity. Especially after the drill bit penetrates the workpiece and causes the water in the washbasin to drain, cooling of the grinding head becomes extremely difficult, leading to easy dulling and loss of sharpness, high load on the grinding head, deformation, and short lifespan. It is unsuitable for high-speed machining, has extremely low efficiency, and high costs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a diamond drill bit with a self-consumable cooling water circuit control method under the condition that the drilling / milling equipment has no internal cooling input, so as to solve the above-mentioned problem.

[0004] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A diamond drill bit with a self-consumable cooling water circuit control, comprising: a drill bit, a grinding head, a cooling water flow baffle, and a drill bit holder. The cooling water flow baffle is sleeved on the drill bit holder and installed at the top of the drill bit. The drill bit holder is located at the upper end of the inside of the drill bit. The grinding head is located above the drill bit and is sleeved on and connected to the cooling water flow baffle. The cooling water flow baffle is a U-shaped tubular structure with an inclined inner wall. The drill bit holder is a columnar structure. The annular space between the inner wall of the cooling water flow baffle and the outer wall of the drill bit holder forms a drill bit through which cooling water enters the interior of the drill bit. The drill bit includes an inlet and a water passage for cooling water to flow inside the drill bit; the grinding bit comprises: a grinding bit body, a self-consumable water-retaining nylon plate, and multiple grinding bit teeth, the multiple grinding bit teeth being arranged around the outer periphery of the grinding bit body, the self-consumable water-retaining nylon plate being disposed at the bottom end of the grinding bit body, the bottom end of the self-consumable water-retaining nylon plate being flush with the bottom end of the grinding bit teeth, an annular space between the outer wall of the cooling water diversion baffle and the inner wall of the grinding bit body forming a grinding bit inlet for cooling water to enter the interior of the grinding bit, an annular space between the outer wall of the cooling water diversion baffle and the inner wall of the self-consumable water-retaining nylon plate forming a water passage for cooling water to flow inside the grinding bit and a grinding bit outlet for cooling the grinding areas of the multiple grinding bit teeth.

[0005] The beneficial effects of this invention are as follows: By providing a cooling water diversion baffle between the grinding head and the drill bit holder, it facilitates the formation of independent cooling water inlets and channels for the drill bit and grinding head, respectively, under external water supply cooling conditions. The inclined inner wall of the cooling water diversion baffle allows the cooling water entering the drill bit inlet to generate a downward component force along the inclined direction under centrifugal force, thereby pushing the cooling water downwards along the side wall of the cooling water diversion baffle and increasing the cooling water flow rate. The water inlet volume ensures that the drilling zone is always under the action of internal cooling water; the self-consumable water-blocking nylon sheet acts like a "gate" to ensure that the water supply position for the grinding head cooling water is always directly facing the grinding zone, thereby preventing the cooling water supplied to the grinding head from being unnecessarily leaked or misaligned under the action of centrifugal force, and effectively preventing the cooling water from being atomized. This invention is beneficial to optimizing the cooling effect of the grinding head, reducing the grinding head load, avoiding grinding head deformation, and improving the grinding head life. It is suitable for high-speed machining, improving machining efficiency, and reducing machining costs.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the drill bit includes a drill bit body and a drill bit working ring, the drill bit working ring being coaxially disposed at the bottom end of the drill bit body.

[0008] The beneficial effect of adopting the above-mentioned further solution is that it helps to provide support for the drilling operation of the drill bit working ring.

[0009] Furthermore, a plurality of drill cooling water channel washers are wound between the lower end of the drill bit holder and the bottom end of the cooling water diversion baffle. The drill bit locking screw passes axially through the lower end of the drill bit holder and the drill cooling water channel washers, and is screwed to the bottom end of the cooling water diversion baffle.

[0010] The beneficial effects of adopting the above-mentioned further solution are: it helps to connect the drill bit holder, cooling water flow baffle and drill bit into a whole, avoiding loosening during high-speed rotation, which would reduce the cooling effect or even create safety hazards.

[0011] Furthermore, the annular space between the lower outer wall of the drill bit holder and the inner wall of the drill bit body forms a drill bit water outlet for cooling the drilling zone of the drill bit working ring.

[0012] The beneficial effect of adopting the above-mentioned further scheme is that it facilitates the flow of cooling water into the drill bit through the drill bit inlet, drill bit water passage and drill bit outlet, and reaches the drilling zone along the inner wall of the drill bit body and working ring, thereby cooling the drilling zone.

[0013] Furthermore, the drill bit base is a tubular structure with an inclined inner wall.

[0014] The beneficial effects of adopting the above-mentioned further scheme are: it helps to break the obstruction effect of cooling water on axial delivery under the radial action of centrifugal force, and under the action of centrifugal force, the cooling water entering the drill bit body generates a downward component force in the inclined direction, thereby axially pushing the cooling water to flow down along the inner wall of the drill bit body to the drilling area, effectively increasing the axial pressure of the non-pump-pressurized cooling water, and also facilitating chip removal during drilling.

[0015] Furthermore, a plurality of grinding head cooling water channel washers are wound between the lower end of the cooling water diversion baffle and the bottom end of the grinding head base. The grinding head locking screw passes axially through the lower end of the drill bit shank, the lower end of the cooling water diversion baffle, and the grinding head cooling water channel washers, and is screwed to the bottom end of the grinding head base.

[0016] The beneficial effects of adopting the above-mentioned further solution are: it helps to connect the drill bit holder, cooling water flow baffle and grinding head into a whole, avoiding loosening during high-speed rotation, which would reduce the cooling effect or even create safety hazards.

[0017] Furthermore, the grinding head tooth plate is an arc-shaped plate structure with an outer ring curvature greater than the inner ring curvature. The grinding head tooth plate includes an electroplated diamond tooth plate substrate and a diamond electroplating layer. The diamond electroplating layer is disposed on the circumferential single-sided sidewall of the electroplated diamond tooth plate substrate.

[0018] The beneficial effects of adopting the above-mentioned further solutions are: it helps to improve the deformation resistance of the grinding surface of the grinding head, increase the grinding head life, reduce the processing load of the grinding head, and achieve immediate chip removal.

[0019] Furthermore, the circumferential thickness of the coating (commonly known as the binder, the same below) in the diamond electroplating layer is greater than the particle size of the diamond particles, and multiple diamond particles are arranged in a single layer on one side of the circumference in the diamond electroplating layer.

[0020] The beneficial effect of adopting the above-mentioned further solution is that it helps to ensure the holding force of the diamond particles.

[0021] Furthermore, the ratio of the radius of any radial point of the diamond electroplated layer to the minimum radius of the diamond electroplated layer is equal to the ratio of the circumferential arc length of any radial point of the diamond electroplated layer to the circumferential arc length at the minimum radius of the diamond electroplated layer.

[0022] The beneficial effects of adopting the above-mentioned further scheme are: it helps to achieve axial wear at the radial points on the grinding surface of the grinding head at the same rate, and achieve wear with equal shape to maintain the shape. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the invention provided by cutting open a portion of the grinding head;

[0024] Figure 2 This is a schematic diagram showing the connection of the drill bit, cooling water diversion baffle, and drill bit holder provided in an embodiment of the present invention;

[0025] Figure 3 for Figure 2 A longitudinal sectional view;

[0026] Figure 4 A top view of the grinding head provided in an embodiment of the present invention;

[0027] Figure 5 For along Figure 4 A schematic diagram of the structure after being cut open by the middle section line AA;

[0028] Figure 6 A top view of the overall structure provided in an embodiment of the present invention;

[0029] Figure 7 For along Figure 6 A schematic diagram of the structure after being cut open along the mid-section line BB;

[0030] Figure 8 A bottom view of the overall structure provided in an embodiment of the present invention;

[0031] Figure 9 For along Figure 8 A schematic diagram of the structure after being cut open along the middle section line CC;

[0032] Figure 10 This is a three-dimensional view of the overall structure after longitudinal sectioning, provided in an embodiment of the present invention.

[0033] Figure 11 A schematic diagram of the initial working state of the overall structure provided in an embodiment of the present invention;

[0034] Figure 12 This is a schematic diagram of the overall structure after it has been in operation for a period of time, as provided in an embodiment of the present invention.

[0035] Figure 13 A schematic diagram of a structure without self-consuming water-repellent nylon sheets;

[0036] Figure 14 This is a schematic diagram of the structure of the grinding head gear provided in an embodiment of the present invention;

[0037] Figure 15 This is a top view of the grinding head gear plate provided in an embodiment of the present invention.

[0038] in, Figure 1 , Figure 3 , Figures 9 to 13 The arrows in the diagram indicate the flow path of the cooling water. Figure 3 , Figure 7 , Figure 9 , Figure 11 and Figure 12 In this context, α represents the inclination angle of the inner wall of the cooling water diversion baffle 3, and θ represents the inclination angle of the inner wall of the drill bit base 11. Figure 6 In this context, R represents the radius of any point in the radial direction of the diamond electroplated layer 232, R1 represents the minimum radius of the diamond electroplated layer 232, L represents the circumferential arc length of any point in the radial direction of the diamond electroplated layer 232, and L1 represents the circumferential arc length at the minimum radius of the diamond electroplated layer 232. Figure 14 and Figure 15 The hexagon in the image represents a diamond particle; Figure 11 and Figure 12 The block-shaped structure fitted onto the grinding head 2 represents the workpiece.

[0039] The attached diagram lists the components represented by each number as follows:

[0040] 1. Drill bit; 2. Grinding head; 3. Cooling water diversion baffle; 4. Drill bit holder; 11. Drill bit body; 12. Drill bit working ring; 13. Drill bit cooling water channel gasket; 14. Drill bit locking screw; 15. Drill bit water inlet; 16. Drill bit water passage; 17. Drill bit water outlet; 21. Grinding head body; 22. Self-consumable water-blocking nylon sheet; 23. Grinding head gear; 24. Grinding head cooling water channel gasket; 25. Grinding head locking screw; 26. Grinding head water inlet; 27. Grinding head water passage; 28. Grinding head water outlet; 231. Electroplated diamond gear base; 232. Diamond electroplating layer. Detailed Implementation

[0041] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0042] like Figures 1 to 12 As shown, a diamond drill bit with a self-consumable cooling water circuit control includes: a drill bit 1, a grinding head 2, a cooling water flow baffle 3, and a drill bit holder 4. The cooling water flow baffle 3 is sleeved on the drill bit holder 4 and installed at the top of the drill bit 1. The drill bit holder 4 is located at the upper end inside the drill bit 1. The grinding head 2 is located above the drill bit 1 and is sleeved on and connected to the cooling water flow baffle 3.

[0043] The cooling water diversion baffle 3 is a convex tubular structure with an inclined inner wall, and the drill bit holder 4 is a columnar structure. The annular space between the inner wall of the cooling water diversion baffle 3 and the outer wall of the drill bit holder 4 forms a drill bit inlet 15 for cooling water to enter the drill bit 1 and a drill bit water passage 16 for cooling water to flow inside the drill bit 1.

[0044] The grinding head 2 includes: a grinding head base 21, a self-consumable water-retaining nylon sheet 22, and a plurality of grinding head teeth 23. The plurality of grinding head teeth 23 are arranged around the outer periphery of the grinding head base 21. The self-consumable water-retaining nylon sheet 22 is disposed at the bottom end of the grinding head base 21. The bottom end of the self-consumable water-retaining nylon sheet 22 is flush with the bottom end of the grinding head teeth 23. The annular space between the outer wall of the cooling water diversion baffle 3 and the inner wall of the grinding head base 21 forms a grinding head inlet 26 for cooling water to enter the interior of the grinding head 2. The annular space between the outer wall of the cooling water diversion baffle 3 and the inner wall of the self-consumable water-retaining nylon sheet 22 forms a grinding head water passage 27 for cooling water to flow inside the grinding head 2 and a grinding head outlet 28 for cooling the grinding areas of the plurality of grinding head teeth 23.

[0045] It should be noted that, in the technical solution of this invention, as... Figure 11 and Figure 12 As shown, the grinding zone of the grinding head toothed plate 23 is the bottom surface of the grinding head toothed plate 23 that contacts the workpiece during grinding;

[0046] like Figure 3 , Figure 7 , Figure 9 , Figure 11 and Figure 12 As shown, the inner wall of the cooling water diversion baffle 3 is inclined at an angle of α;

[0047] like Figure 13 As shown, under the design of the cooling water diversion baffle in this invention, if a self-consumable water-blocking nylon sheet is not provided, the cooling water will flow directly out from the water passage 27 of the grinding head, and most of the cooling water will leak unnecessarily, failing to concentrate on cooling the grinding area of ​​the grinding head gear 23, resulting in inefficient use of the cooling water.

[0048] The beneficial effects of this invention are as follows: By providing a cooling water diversion baffle between the grinding head and the drill bit holder, it facilitates the formation of independent cooling water inlets and channels for the drill bit and grinding head, respectively, under external water supply cooling conditions. The inclined inner wall of the cooling water diversion baffle allows the cooling water entering the drill bit inlet to generate a downward component force along the inclined direction under centrifugal force, thereby pushing the cooling water downwards along the side wall of the cooling water diversion baffle and increasing the cooling water flow rate. The water inlet volume ensures that the drilling zone is always under the action of internal cooling water; the self-consumable water-blocking nylon sheet acts like a "gate" to ensure that the water supply position for the grinding head cooling water is always directly facing the grinding zone, thereby preventing the cooling water supplied to the grinding head from being unnecessarily leaked or misaligned under the action of centrifugal force, and effectively preventing the cooling water from being atomized. This invention is beneficial to optimizing the cooling effect of the grinding head, reducing the grinding head load, avoiding grinding head deformation, and improving the grinding head life. It is suitable for high-speed machining, improving machining efficiency, and reducing machining costs.

[0049] Preferred, such as Figures 1 to 3 As shown, the drill bit 1 includes a drill bit body 11 and a drill bit working ring 12, and the drill bit working ring 12 is coaxially disposed at the bottom end of the drill bit body 11.

[0050] It should be noted that, in the technical solution of the present invention, the drill bit working ring 12 contains diamond particles.

[0051] The advantage of adopting the above-mentioned preferred scheme is that it helps to provide support for the drilling operation of the drill bit working ring.

[0052] Preferred, such as Figure 7As shown, a plurality of drill cooling water channel washers 13 are wound between the lower end of the drill bit holder 4 and the bottom end of the cooling water diversion baffle 3. The drill bit locking screw 14 passes axially through the lower end of the drill bit holder 4 and the drill cooling water channel washers 13, and is screwed to the bottom end of the cooling water diversion baffle 3.

[0053] The advantages of adopting the above-mentioned preferred solution are: it helps to connect the drill bit holder, cooling water flow baffle and drill bit into a whole, avoiding loosening during high-speed rotation, which would reduce the cooling effect or even create safety hazards.

[0054] Preferred, such as Figure 7 , Figures 9 to 12 As shown, the annular space between the lower outer wall of the drill bit holder 4 and the inner wall of the drill bit body 11 forms a drill bit water outlet 17 for cooling the drilling area of ​​the drill bit working ring 12.

[0055] It should be noted that, in the technical solution of the present invention, the drilling area of ​​the drill bit working ring 12 is the bottom surface of the drill bit working ring 12 that contacts the workpiece during drilling.

[0056] The advantages of adopting the above-mentioned preferred scheme are: it facilitates the flow of cooling water into the drill bit through the drill bit inlet, drill bit water passage and drill bit outlet, and reaches the drilling zone along the inner wall of the drill bit body and working ring, thereby cooling the drilling zone.

[0057] Preferred, such as Figure 3 , Figure 7 , Figure 9 , Figure 11 and Figure 12 As shown, the drill bit base 11 is a tubular structure with an inclined inner wall, and the inclination angle of the inner wall of the drill bit base 11 is θ.

[0058] The advantages of adopting the above-mentioned preferred solution are: it helps to break the obstruction effect of cooling water on axial delivery under the radial action of centrifugal force, and under the action of centrifugal force, the cooling water entering the drill bit body generates a downward component force in the inclined direction, thereby axially pushing the cooling water to flow down along the inner wall of the drill bit body to the drilling area, effectively increasing the axial pressure of the non-pump-pressurized cooling water, and also facilitating chip removal during drilling.

[0059] Preferred, such as Figure 7 As shown, a plurality of grinding head cooling water channel washers 24 are wound around the lower end of the cooling water diversion baffle 3 and the bottom end of the grinding head base 21. The grinding head locking screw 25 passes axially through the lower end of the drill bit holder 4, the lower end of the cooling water diversion baffle 3 and the grinding head cooling water channel washers 24, and is screwed to the bottom end of the grinding head base 21.

[0060] The advantages of adopting the above-mentioned preferred solution are: it helps to connect the drill bit holder, cooling water flow baffle and grinding head into a whole, avoiding loosening during high-speed rotation, which would reduce the cooling effect or even cause safety hazards.

[0061] Preferred, such as Figure 14 and Figure 15 As shown, the grinding head tooth 23 is an arc-shaped plate structure with an outer ring curvature greater than the inner ring curvature. The grinding head tooth 23 includes an electroplated diamond tooth substrate 231 and a diamond electroplating layer 232. The diamond electroplating layer 232 is disposed on the circumferential single-sided sidewall of the electroplated diamond tooth substrate 231.

[0062] It should be noted that, in the technical solution of the present invention, the diamond electroplating layer 232 is radially and evenly distributed on the grinding head substrate 21, which is beneficial to the immediate chip removal of the grinding head.

[0063] The advantages of adopting the above-mentioned preferred scheme are: it helps to improve the deformation resistance of the grinding surface of the grinding head, increase the grinding head life, reduce the processing load of the grinding head, and achieve immediate chip removal.

[0064] Preferred, such as Figure 15 As shown, the circumferential thickness of the diamond electroplating layer 232 is greater than the particle size of the diamond particles, and multiple diamond particles are arranged in a single layer on one side of the circumferential direction in the diamond electroplating layer 232.

[0065] The advantage of adopting the above-mentioned preferred scheme is that it helps to ensure the holding force of the diamond particles.

[0066] Preferred, such as Figure 6 As shown, the ratio of the radius R of any point in the radial direction of the diamond electroplated layer 232 to the minimum radius R1 of the diamond electroplated layer 232 is equal to the ratio of the circumferential arc length L of any point in the radial direction of the diamond electroplated layer 232 to the circumferential arc length L1 at the minimum radius of the diamond electroplated layer 232.

[0067] It should be noted that, in the technical solution of the present invention, the minimum radius of the diamond electroplated layer 232 is equal to the radius of the drill bit 1.

[0068] The advantages of adopting the above preferred scheme are: it helps to achieve axial wear at the radial points on the grinding surface of the grinding head at the same rate, and achieves wear with equal shape to maintain the shape.

[0069] This invention has the following advantages:

[0070] 1. Achieve internal cooling mode for the drill bit, greatly improving the cooling effect;

[0071] 2. The drill bit structure with cooling water diversion baffles to achieve pressurized water supply enhances the drilling chip removal capability;

[0072] 3. The self-consumption method of the grinding head water supply controls the water circuit structure, eliminates unnecessary leakage of cooling water, and improves the utilization rate of cooling water;

[0073] 4. The low-load, rapid chip removal structure of the grinding head promotes the rapid removal of powder and chips, thereby improving sharpness.

[0074] 5. The grinding head has an anti-deformation structure, eliminating the need for dressing and extending its service life;

[0075] 6. Suitable for high-speed machining, improving efficiency and reducing costs.

[0076] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0078] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0079] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0081] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A diamond drill bit with a self-consumable cooling water circuit control, characterized in that, include: The drill bit (1), grinding head (2), cooling water flow baffle (3) and drill-grinding head handle (4) are provided. The cooling water flow baffle (3) is sleeved on the drill-grinding head handle (4). The cooling water flow baffle (3) is installed on the top of the drill bit (1). The drill-grinding head handle (4) is located at the upper end inside the drill bit (1). The grinding head (2) is located above the drill bit (1). The grinding head (2) is sleeved on the cooling water flow baffle (3) and connected to the cooling water flow baffle (3). The cooling water diversion baffle (3) is a convex tubular structure with an inclined inner wall, and the drill bit holder (4) is a columnar structure. The annular space between the inner wall of the cooling water diversion baffle (3) and the outer wall of the drill bit holder (4) forms a drill bit inlet (15) for cooling water to enter the drill bit (1) and a drill bit water passage (16) for cooling water to flow inside the drill bit (1). The grinding head (2) includes: a grinding head base (21), a self-consumable water-repellent nylon sheet (22), and a plurality of grinding head teeth (23). The plurality of grinding head teeth (23) are arranged around the outer periphery of the grinding head base (21). The self-consumable water-repellent nylon sheet (22) is disposed at the bottom end of the grinding head base (21). The bottom end of the self-consumable water-repellent nylon sheet (22) is flush with the bottom end of the grinding head teeth (23). The cooling water diversion baffle (3) is located on the outer periphery of the grinding head base (21). The annular space between the wall and the inner wall of the grinding head base (21) forms a grinding head inlet (26) for cooling water to enter the interior of the grinding head (2). The annular space between the outer wall of the cooling water diversion baffle (3) and the inner wall of the self-consumable water-blocking nylon sheet (22) forms a grinding head water passage (27) for cooling water to flow inside the grinding head (2) and a grinding head outlet (28) for cooling the grinding areas of the multiple grinding head teeth (23).

2. The diamond drill bit with self-consumption method for controlling the cooling water circuit according to claim 1, characterized in that, The drill bit (1) includes a drill bit body (11) and a drill bit working ring (12), which is coaxially disposed at the bottom end of the drill bit body (11).

3. The diamond drill bit with self-consumption method for controlling the cooling water circuit according to claim 2, characterized in that, Multiple drill cooling water channel washers (13) are wound around the lower end of the drill bit holder (4) and the bottom end of the cooling water diversion baffle (3). The drill bit locking screw (14) passes axially through the lower end of the drill bit holder (4) and the drill bit cooling water channel washer (13), and is screwed to the bottom end of the cooling water diversion baffle (3).

4. A diamond drill bit with a self-consumable cooling water circuit controlled according to claim 2, characterized in that, The annular space between the lower outer wall of the drill bit holder (4) and the inner wall of the drill bit body (11) forms a drill bit outlet (17) for cooling the drilling area of ​​the drill bit working ring (12).

5. A diamond drill bit with a self-consumable cooling water circuit controlled according to claim 2, characterized in that, The drill bit base (11) is a tubular structure with an inclined inner wall.

6. A diamond drill bit with a self-consumable cooling water circuit controlled according to claim 1, characterized in that, Multiple grinding head cooling water channel washers (24) are wound around the lower end of the cooling water diversion baffle (3) and the bottom end of the grinding head base (21). The grinding head locking screw (25) passes axially through the lower end of the drill bit holder (4), the lower end of the cooling water diversion baffle (3) and the grinding head cooling water channel washers (24), and is screwed to the bottom end of the grinding head base (21).

7. A diamond drill bit with a self-consumable cooling water circuit controlled according to claim 1, characterized in that, The grinding head tooth plate (23) is an arc-shaped plate structure with an outer ring curvature greater than the inner ring curvature. The grinding head tooth plate (23) includes an electroplated diamond tooth plate substrate (231) and a diamond electroplating layer (232). The diamond electroplating layer (232) is disposed on the circumferential single-sided sidewall of the electroplated diamond tooth plate substrate (231).

8. A diamond drill bit with a self-consumable cooling water circuit controlled according to claim 7, characterized in that, The circumferential thickness of the diamond electroplating layer (232) is greater than the particle size of the diamond particles, and multiple diamond particles are arranged in a single layer on one side of the circumferential direction in the diamond electroplating layer (232).

9. A diamond drill bit with a self-consumable cooling water circuit controlled according to claim 7, characterized in that, The ratio of the radius of any point in the radial direction of the diamond electroplated layer (232) to the minimum radius of the diamond electroplated layer (232) is equal to the ratio of the circumferential arc length of any point in the radial direction of the diamond electroplated layer (232) to the circumferential arc length at the minimum radius of the diamond electroplated layer (232).

Images