Drilling tool with cooling structure

Abstract

The utility model relates to numerical control tool technical field discloses a drilling tool with cooling structure, including drill body, the drill body is along the axial and is provided with through groove no.

Description

Technical Field

[0001] This utility model relates to the field of CNC cutting tool technology, and in particular to a drilling tool with a cooling structure. Background Technology

[0002] Cooled drilling tools are specialized tools designed for targeted cooling during drilling operations. Their core feature is the precise delivery of coolant to the cutting contact area between the tool and the workpiece through a specific design, effectively mitigating the high temperatures generated by friction during drilling. By integrating the cooling path with the drilling function, these tools not only reduce the temperature of the tool edge during machining, preventing problems such as decreased tool hardness and accelerated wear caused by overheating, but also flush away cutting debris, reducing its accumulation on the tool surface and preventing built-up edge formation that could affect machining accuracy.

[0003] However, in practical use, the following technical problems have been found in existing drilling tools: First, the cooling channel design is unreasonable. Most cooling holes are directly opened inside the drill body, and the diameter of the holes is small. After use, coolant is easily left on the inner wall of the channel. Over time, it will form scale or a mixture of chips, causing blockage of the channel. This not only affects the subsequent cooling effect, but also requires disassembly of the tool for cleaning. Cleaning the small channels is extremely difficult, often requiring special tools to unclog them repeatedly, which is both time-consuming and increases maintenance costs. Second, the connection structure between the drill bit and the drill body is not optimized. Traditional tools mostly use welding or a single bolt for fixing. Disassembly and assembly require multiple tools, making the operation cumbersome. After long-term use, the connection is prone to loosening due to vibration, which not only affects drilling accuracy, but may also cause safety accidents due to drill bit falling off.

[0004] In response to this technical problem, this application proposes a drilling tool with a cooling structure. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as unreasonable cooling channel design leading to easy blockage and difficult and costly cleaning, and suboptimal connection structure between the drill bit and drill body resulting in cumbersome assembly and disassembly. Therefore, this invention proposes a drilling tool with a cooling structure.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A drilling tool with a cooling structure includes a drill body, a through groove axially formed in the drill body, a drill shank fixedly connected to the rear side of the drill body, a through groove 2 connected to the rear side of the drill shank, the through groove 2 communicating with the through groove 1, a connecting seat threadedly connected to the inner wall of the through groove 2, a pentagonal groove formed on the rear side of the connecting seat, an insertion hole formed axially on the inner wall of the pentagonal groove, a sealing ring fixedly connected to the outer front end of the connecting seat, a liquid pipe provided on the outer side of the sealing ring, an outlet formed at the front end of the liquid pipe, a drill bit connected to the inner wall of the front end of the drill body via an installation assembly, and a cavity adapted to the front end of the outer wall of the liquid pipe formed on the rear side of the drill bit.

[0008] Furthermore, the drill bit has guide grooves on both sides of its front end, and the inner wall of the guide grooves has through holes that communicate with the internal cavity of the drill bit.

[0009] Furthermore, the outer wall of the liquid pipe is connected to the inner wall of the through groove one through a limiting component.

[0010] Furthermore, the mounting assembly includes a mounting block and a connecting ring. The mounting block is fixedly connected to both ends of the outer side of the drill bit, and the inner wall of the front end of the drill body is provided with a mounting slot that matches the mounting block.

[0011] Furthermore, the connecting ring is fixedly connected to the rear side of the drill bit, and the outer side of the connecting ring is detachably connected to the inner wall of the front end of the drill body. When the connecting ring is installed at the front end of the drill body, its inner side is sleeved on the outer wall of the liquid tube.

[0012] Furthermore, the limiting component includes a reserved limiting groove and a limiting block. The reserved limiting groove is formed on the inner wall of the through groove one, and the limiting block is fixedly connected to both ends of the outer side of the liquid pipe. The limiting block is adapted to the inner wall of the reserved limiting groove, and the liquid pipe is installed inside the through groove one.

[0013] Furthermore, after the liquid pipe is installed inside the through groove, the outlet hole is aligned with the through hole.

[0014] Furthermore, the rear end of the inner wall of the liquid pipe is used to insert an externally provided coolant delivery pipe. The coolant is delivered through the interior of the liquid pipe to the outlet by an external delivery pump and flows to the front end of the drill bit through the through hole and the guide groove.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the structure of separating the liquid pipe from the drill body is adopted, which completely solves the drawback of the traditional tool that directly opens the cooling channel on the inner wall of the drill body. When not in use, the liquid pipe can be removed from the through groove 1 as a whole, avoiding the coolant residue inside the drill body causing long-term blockage. In addition, the liquid pipe can be cleaned and maintained separately, eliminating the need to deal with the problem of traditional small channels being difficult to clean, which greatly reduces the difficulty and cost of maintenance.

[0017] 2. In this utility model, the externally set caliper that is compatible with the guide groove rotates the drill bit, which engages with the mounting block and the mounting slot, and the connecting ring is sleeved and limited. The resistance coating on the outer wall of the mounting block can effectively prevent the drill bit from loosening during drilling, enhance the structural stability and operational safety, and also enable the rapid installation and disassembly of the drill bit. Attached Figure Description

[0018] Figure 1 This is a perspective view of a drilling tool with a cooling structure proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the liquid pipe structure of a drilling tool with a cooling structure proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of a connecting seat structure for a drilling tool with a cooling structure proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of a drill bit structure for a drilling tool with a cooling structure proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the connecting ring structure of a drilling tool with a cooling structure proposed in this utility model.

[0023] Legend:

[0024] 1. Drill body; 2. Drill shank; 3. Drill bit; 4. Through slot one; 5. Reserved limiting slot; 6. Through slot two; 7. Liquid pipe; 8. Limiting block; 9. Sealing ring; 10. Connecting seat; 11. Pentagonal groove; 12. Insertion hole; 13. Liquid outlet; 14. Mounting slot; 15. Mounting block; 16. Connecting ring; 17. Guide groove; 18. Through hole. 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] Reference Figures 1-3An embodiment of this utility model is provided: a drilling tool with a cooling structure, including a drill body 1, a through groove 4 opened along the axial direction of the drill body 1, a drill shank 2 fixedly connected to the rear side of the drill body 1, a through groove 6 opened at the rear side of the drill shank 2, the through groove 6 communicating with the through groove 4, a connecting seat 10 threadedly connected to the inner wall of the through groove 6, a pentagonal groove 11 opened at the rear side of the connecting seat 10, an insertion hole 12 opened along the axial direction on the inner wall of the pentagonal groove 11, a sealing ring 9 fixedly connected to the front end of the outer side of the connecting seat 10, a liquid pipe 7 provided outside the sealing ring 9, a liquid outlet 13 opened at the front end of the liquid pipe 7, a drill bit 3 connected to the inner wall of the front end of the drill body 1 through an installation component, and a cavity adapted to the front end of the outer wall of the liquid pipe 7 opened at the rear side of the drill bit 3;

[0027] Specifically, when drilling is required, the liquid pipe 7 is first slid into the pre-reserved limiting groove 5 on the inner wall of the through groove 4 of the drill body 1 through the limiting block 8 on its outer side. After the liquid pipe 7 is installed in place, a pentagonal wrench that matches the pentagonal groove 11 is inserted into the pentagonal groove 11 and the connecting seat 10 is rotated. The threaded engagement between the connecting seat 10 and the inner wall of the through groove 26 is used to fix and limit the liquid pipe 7. At this time, the sealing ring 9 at the outer front end of the connecting seat 10 is tightly fitted to the inner wall of the through groove 26 to achieve a seal and prevent coolant leakage. Then, the drill bit 3 is misaligned with the front end of the drill body 1 so that the connecting ring 16 is fitted. The mounting blocks 15 on both sides of the drill bit 3 are inserted into the mounting slots 14 on the inner wall of the front end of the drill body 1 by rotating the drill bit 3. Since the outer wall of the mounting block 15 is coated with a coating to increase resistance, it can effectively prevent the drill bit 3 from loosening during drilling. At this time, the outlet 13 of the liquid pipe 7 is precisely aligned with the through hole 18 in the cavity of the drill bit 3. During operation, the external coolant delivery pipe is inserted into the rear end of the inner wall of the liquid pipe 7. The coolant enters the interior of the liquid pipe 7 under the action of the external delivery pump, and enters the guide groove 17 through the outlet 13 and the through hole 18 in sequence, and finally flows to the cutting area at the front end of the drill bit 3 to achieve cooling.

[0028] Reference Figures 3-5The drill bit 3 has guide grooves 17 on both sides of its front end, and through holes 18 are formed on the inner wall of the guide grooves 17, which communicate with the internal cavity of the drill bit 3. The outer wall of the liquid pipe 7 is connected to the inner wall of the through groove 4 through a limiting component. The mounting component includes a mounting block 15 and a connecting ring 16. The mounting block 15 is fixedly connected to both ends of the outer side of the drill bit 3. The inner wall of the front end of the drill body 1 has a mounting slot 14 that matches the mounting block 15. The connecting ring 16 is fixedly connected to the rear side of the drill bit 3. The outer side of the connecting ring 16 is detachably connected to the inner wall of the front end of the drill body 1. When the connecting ring 16 is installed at the front end of the drill body 1, its inner side is fitted with... The limiting component includes a reserved limiting groove 5 and a limiting block 8, which are located on the outer wall of the liquid pipe 7. The reserved limiting groove 5 is opened on the inner wall of the through groove 4, and the limiting block 8 is fixedly connected to both ends of the outer side of the liquid pipe 7. The limiting block 8 is adapted to the inner wall of the reserved limiting groove 5. The liquid pipe 7 is installed inside the through groove 4. After the liquid pipe 7 is installed inside the through groove 4, the position of the outlet 13 is aligned with the through hole 18. The rear end of the inner wall of the liquid pipe 7 is used to insert an externally installed coolant delivery pipe. The coolant is delivered to the outlet 13 through the internal liquid pipe 7 by an external delivery pump and flows to the front end of the drill bit 3 through the through hole 18 and the guide groove 17.

[0029] Specifically, the design separates the coolant pipe 7 from the drill body 1, effectively overcoming the shortcomings of existing cutting tools where the coolant delivery pipe is directly opened on the inner wall of the drill body 1. When not in use, the coolant pipe 7 can be removed from the through groove 4, preventing coolant residue from clogging the inner wall of the drill body 1. Furthermore, the coolant pipe 7 can be cleaned and maintained independently, solving the problem of inconvenient cleaning and maintenance caused by the small aperture and location inside the drill body 1 in traditional structures. The cooperation between the pre-reserved limiting groove 5 and the limiting block 8 ensures the precise guidance of the coolant pipe 7 during installation, guaranteeing the alignment accuracy between the outlet 13 and the through hole 18, thus ensuring smooth and efficient coolant delivery. The mounting block 15 in the mounting assembly... The snap-fitting with the mounting slot 14 and the limiting sleeve of the connecting ring 16 on the front end of the liquid pipe 7 not only enable the quick assembly and disassembly of the drill bit 3, but also enhance the connection stability between the drill bit 3, the liquid pipe 7, and the drill body 1. Combined with the resistance coating on the outer wall of the mounting block 15, the structural reliability during the drilling process is further improved. The setting of the sealing ring 9 enhances the sealing between the connecting seat 10 and the through groove 6, reduces coolant leakage loss, and improves cooling efficiency. The pentagonal groove 11 of the connecting seat 10 is designed to match the threaded connection, making the fixing and disassembly of the liquid pipe 7 convenient and labor-saving. The overall structural design is reasonable, taking into account the cooling effect, ease of use, and ease of maintenance.

[0030] Working principle: When using this drilling tool, first prepare for assembly: Align the liquid pipe 7 with the through groove 4 of the drill body 1, so that the limiting block 8 on the outside of the liquid pipe 7 is aligned with the reserved limiting groove 5 on the inner wall of the through groove 4. Push the liquid pipe 7 smoothly along the reserved limiting groove 5 until its front end is close to the front opening of the drill body 1. At this time, the connecting seat 10 just enters the through groove 6 of the drill shank 2. Insert the pentagonal wrench that is compatible with the pentagonal groove 11 into the pentagonal groove 11, rotate the connecting seat 10, and use its threaded engagement with the through groove 6 to firmly fix the liquid pipe 7. The sealing ring 9 at the front end of the connecting seat 10 then tightly fits the inner wall of the through groove 6, forming a sealing structure to prevent coolant leakage. Next, install drill bit 3: Align the cavity on the rear side of drill bit 3 with the front end of liquid pipe 7, so that connecting ring 16 fits onto the outer wall of liquid pipe 7. At the same time, align the mounting blocks 15 on both sides of drill bit 3 with the mounting slots 14 on the inner wall of the front end of drill body 1. Rotate drill bit 3, and mounting blocks 15 will rotate with drill bit 3 and engage in mounting slots 14. Because the outer wall of mounting blocks 15 has a coating that increases resistance, it can effectively prevent drill bit 3 from loosening during drilling. At this time, the outlet 13 of liquid pipe 7 is precisely aligned with the through hole 18 in the cavity of drill bit 3. During drilling, insert the external coolant delivery pipe into the insertion hole 12 of connector 10 and connect it to the rear end of liquid pipe 7. Start the external delivery pump, and the coolant flows along the internal channel of liquid pipe 7, enters the cavity of drill bit 3 through outlet 13, and then flows into guide groove 17 through through hole 18. Finally, it is precisely guided along guide groove 17 to the cutting area at the front end of drill bit 3 to achieve cooling and lubrication of the tool and workpiece. After the operation is completed, rotate the five-pointed wrench in the opposite direction to loosen the connecting seat 10, pull out the liquid pipe 7 along the reserved limiting groove 5, and then rotate the drill bit 3 in the opposite direction to make the mounting block 15 disengage from the mounting slot 14, so that the drill bit 3 can be removed. Since the liquid pipe 7 and the drill body 1 are designed separately, the liquid pipe 7 can be cleaned separately to avoid coolant residue blockage. The through groove 4 of the drill body 1 is also easier to maintain because it has no small channels. The whole process not only ensures cooling efficiency, but also improves the convenience of use and maintainability.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drilling tool with a cooling structure, characterized in that, The system includes a drill body (1), which has an axially oriented through groove 1 (4). A drill shank (2) is fixedly connected to the rear side of the drill body (1). A through groove 2 (6) is opened on the rear side of the drill shank (2). The through groove 2 (6) communicates with the through groove 1 (4). A connecting seat (10) is threadedly connected to the inner wall of the through groove 2 (6). A pentagonal groove (11) is opened on the rear side of the connecting seat (10). An insertion hole (12) is opened on the inner wall of the pentagonal groove (11) along the axial direction. A sealing ring (9) is fixedly connected to the front end of the outer side of the connecting seat (10). A liquid pipe (7) is provided on the outer side of the sealing ring (9). A liquid outlet (13) is opened at the front end of the liquid pipe (7). A drill bit (3) is connected to the inner wall of the front end of the drill body (1) through an installation component. A cavity that matches the front end of the outer wall of the liquid pipe (7) is opened on the rear side of the drill bit (3).

2. A drilling tool with a cooling structure according to claim 1, characterized in that: The drill bit (3) has guide grooves (17) on both sides of its front end, and a through hole (18) is provided on the inner wall of the guide groove (17). The through hole (18) is connected to the internal cavity of the drill bit (3).

3. A drilling tool with a cooling structure according to claim 1, characterized in that: The outer wall of the liquid pipe (7) is connected to the inner wall of the through groove (4) through a limiting component.

4. A drilling tool with a cooling structure according to claim 2, characterized in that: The mounting assembly includes a mounting block (15) and a connecting ring (16). The mounting block (15) is fixedly connected to both ends of the outside of the drill bit (3). The inner wall of the front end of the drill body (1) is provided with a mounting slot (14) that is compatible with the mounting block (15).

5. A drilling tool with a cooling structure according to claim 4, characterized in that: The connecting ring (16) is fixedly connected to the rear side of the drill bit (3). The outer side of the connecting ring (16) is detachably connected to the inner wall of the front section of the drill body (1). When the connecting ring (16) is installed in the front section of the drill body (1), its inner side is sleeved on the outer wall of the liquid pipe (7).

6. A drilling tool with a cooling structure according to claim 3, characterized in that: The limiting component includes a reserved limiting groove (5) and a limiting block (8). The reserved limiting groove (5) is opened on the inner wall of the through groove (4). The limiting block (8) is fixedly connected to both ends of the outer side of the liquid pipe (7). The limiting block (8) is adapted to the inner wall of the reserved limiting groove (5). The liquid pipe (7) is installed inside the through groove (4).

7. A drilling tool with a cooling structure according to claim 1, characterized in that: The liquid pipe (7) is installed inside the through groove (4), and the position of the liquid outlet (13) is aligned with the through hole (18).

8. A drilling tool with a cooling structure according to claim 1, characterized in that: The inner rear end of the liquid pipe (7) is used to insert an externally installed coolant delivery pipe. The coolant is delivered through the interior of the liquid pipe (7) to the outlet (13) by an external delivery pump and flows to the front end of the drill bit (3) through the through hole (18) and the guide groove (17).

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