Drill bit structure with built-in cooling flow channel

Abstract

The utility model relates to the technical field of drill bits, and discloses a drill bit structure with a built-in cooling flow channel, which solves the problem of poor use effect of the existing drill bit and comprises a drill bit body, a mounting seat is fixedly arranged at the top end of the drill bit body, and a water inlet hole is formed in the center of the top end of the mounting seat. The bottom end of the drill bit body is provided with a plurality of drainage holes, the drill bit body is internally provided with a cooling channel communicated with the water inlet hole and the drainage holes, the cooling channel is composed of a main channel, a transition channel, a pressurization channel and a plurality of flow dividing channels, the main channel is located at the top end in the drill bit body and communicated with the water inlet hole, and the transition channel is located at the bottom end of the main channel; the pressurizing channel is located at the bottom end of the transition channel, and the flow dividing channel is located at the bottom end of the pressurizing channel, communicates with the drainage hole and is of an inclined structure. The inner cooling function can be achieved through the drill bit structure, so that the cooling effect is improved, meanwhile, chip removal can be assisted, and use convenience is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill bits, in particular to a drill bit structure with a built-in cooling channel. Background Art

[0002] The drill bit is used for drilling holes in workpieces. At present, in order to improve the cooling effect, a drill bit with a built-in cooling channel is generally used for drilling operations. However, the internally cooled drill bit structure currently used has a built-in channel with the same inner diameter, which is not convenient for secondary pressurization during use, and will affect the discharge of metal debris. Moreover, the existing drill bit structure is not convenient for dispersing and guiding the metal debris during chip discharge. If the metal debris directly impacts the drill bit mounting seat, it will cause a certain degree of wear and tear, and the use effect is not good. Therefore, the present application proposes a drill bit structure with a built-in cooling channel. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a drill bit structure with a built-in cooling channel, which effectively solves the problem that the existing drill bit has a poor use effect.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drill bit structure with a built-in cooling channel, comprising a drill bit body, a mounting seat is fixedly arranged at the top of the drill bit body, a water inlet hole is opened at the center position of the top of the mounting seat, a plurality of drainage holes are opened at the bottom end of the drill bit body, a cooling channel connected with the water inlet hole and the drainage hole is opened inside the drill bit body, the cooling channel is composed of a main channel, a transition channel, a boost channel and a plurality of diversion channels, the main channel is located at the top of the drill bit body and connected with the water inlet hole, the transition channel is located at the bottom end of the main channel, the boost channel is located at the bottom end of the transition channel, the diversion channel is located at the bottom end of the boost channel and connected with the drainage hole, and the diversion channel is an inclined structure.

[0005] Preferably, the transition channel is a tapered structure, the inner diameter of the main channel is larger than the inner diameter of the boost channel, and the inner diameter of the boost channel is larger than the inner diameter of the diversion channel.

[0006] Preferably, a plurality of chip removal grooves are provided on the side of the drill body, and the chip removal grooves are of a spiral structure.

[0007] Preferably, the mounting seat is composed of a connecting shaft, a flow guide seat and a buffer connecting section, the flow guide seat is fixedly connected to the top of the drill body through the buffer connecting section, and the connecting shaft is fixedly connected to the top of the flow guide seat.

[0008] Preferably, the side of the buffer connection section is an arc-shaped structure, a plurality of guide ribs are fixedly provided on the side of the buffer connection section, the guide ribs are an inclined structure, and a plurality of planar grooves are provided on the side of the connecting shaft.

[0009] Preferably, the top end of the connecting shaft is provided with an annular groove 1 and an annular groove 2, an O-ring 1 is arranged inside the annular groove 1, and an O-ring 2 is arranged inside the annular groove 2.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] (1) During operation, by providing a water inlet hole, a drain hole, and a cooling channel composed of a main channel, a transition channel, a pressurization channel, and a plurality of shunt channels, the drill body can be internally cooled, the cooling effect of the drill body can be improved, the service life of the drill body can be improved, and auxiliary chip removal can be performed at the same time. By setting the inner diameter of the main channel to be larger than the inner diameter of the pressurization channel, and the inner diameter of the pressurization channel to be larger than the inner diameter of the shunt channel, the cooling water can be pressurized for a second time, the flow rate of the cooling water can be increased, and the chip removal effect can be further improved;

[0012] (2) By providing a mounting seat composed of a connecting shaft, a guide seat and a buffer connecting section, and providing guide ribs, metal debris can be guided so that the metal debris is dispersed and discharged, thereby preventing the metal debris from rising in the vertical direction and causing impact on the drill mounting seat and the machine tool, thereby avoiding wear on the drill mounting seat and the machine tool. By providing O-ring 1 and O-ring 2, the installation sealing of the drill bit can be improved to avoid water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] In the attached picture:

[0015] Figure 1 This is a schematic diagram of the drill structure with built-in cooling channel of the utility model;

[0016] Figure 2 This is a cross-sectional view of a drill bit with a built-in cooling channel according to the utility model;

[0017] Figure 3 For this utility model Figure 2 A partial enlarged view of the middle A;

[0018] Figure 4 This is a schematic diagram of the structure of the mounting seat of the utility model;

[0019] Figure 5 This is a bottom view of the drill bit body of the utility model;

[0020] Figure 6 This is a top view of the drill body of the utility model;

[0021] In the figure: 1. drill bit body; 2. mounting seat; 3. water inlet hole; 4. drainage hole; 5. cooling channel; 6. main channel; 7. transition channel; 8. boost channel; 9. diversion channel; 10. chip groove; 11. connecting shaft; 12. guide seat; 13. buffer connection section; 14. guide rib; 15. plane groove; 16. annular groove one; 17. annular groove two; 18. O-ring one; 19. O-ring two. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Depend on Figures 1 to 5 The utility model provides a drill structure with a built-in cooling channel, comprising a drill body 1, a mounting seat 2 is fixedly provided at the top of the drill body 1, a water inlet hole 3 is provided at the center position of the top of the mounting seat 2, a plurality of drainage holes 4 are provided at the bottom of the drill body 1, a cooling channel 5 connected with the water inlet hole 3 and the drainage hole 4 is provided inside the drill body 1, the cooling channel 5 is composed of a main channel 6, a transition channel 7, a boost channel 8 and a plurality of diversion channels 9, the main channel 6 is located at the top of the drill body 1 and connected with the water inlet hole 3, the transition channel 7 is located at the bottom of the main channel 6, the boost channel 8 is located at the bottom of the transition channel 7, the diversion channel 9 is located at the bottom of the boost channel 8 and connected with the drainage hole 4, and the diversion channel 9 is an inclined structure;

[0024] The cooling water enters the main channel 6 through the water inlet hole 3, then enters the transition channel 7 through the main channel 6, then enters the pressurizing channel 8, and enters the diverting channel 9 through the pressurizing channel 8. The cooling water is discharged along different paths through the diverting channel 9, which effectively improves the cooling effect on the drill body 1 and assists in chip removal.

[0025] Depend on Figure 1 and Figure 3 It is shown that the transition channel 7 is a conical structure, the inner diameter of the main channel 6 is larger than the inner diameter of the boost channel 8, the inner diameter of the boost channel 8 is larger than the inner diameter of the diversion channel 9, and a plurality of chip removal grooves 10 are provided on the side of the drill body 1, and the chip removal grooves 10 are spiral structures;

[0026] The cooling water enters the transition channel 7 to realize the pressurization effect, thereby increasing the flow rate of the cooling water in the pressurization channel 8 and the diversion channel 9, so that the cooling water is discharged quickly, thereby being able to quickly discharge the metal debris and improve the chip removal effect;

[0027] Depend on Figure 1 , Figure 4 and Figure 6 It is given that the mounting seat 2 is composed of a connecting shaft 11, a guide seat 12 and a buffer connecting section 13. The guide seat 12 is fixedly connected to the top of the drill body 1 through the buffer connecting section 13, and the connecting shaft 11 is fixedly connected to the top of the guide seat 12. The side of the buffer connecting section 13 is an arc-shaped structure, and the side of the buffer connecting section 13 is fixedly provided with a plurality of guide ribs 14, and the guide ribs 14 are inclined structures. The side of the connecting shaft 11 is provided with a plurality of plane grooves 15, and the top of the connecting shaft 11 is provided with a circular annular groove 16 and a circular annular groove 2 17, and the inside of the circular annular groove 16 is provided with an O-type sealing ring 18, and the inside of the circular annular groove 2 17 is provided with an O-type sealing ring 2 19;

[0028] During the chip removal process, the guide seat 12, the buffer connection section 13 and the guide ribs 14 are used to guide the metal debris, so that the metal debris is dispersed and discharged, avoiding the metal debris from directly impacting the drill mounting seat and the machine tool, thereby reducing wear. The O-ring 18 and the O-ring 2 19 can improve the connection sealing between the drill body 1 and the drill mounting seat to avoid water leakage.

[0029] During operation, by providing a water inlet hole, a drain hole and a cooling channel composed of a main channel, a transition channel, a boost channel and several diversion channels, internal cooling of the drill body can be achieved, the cooling effect of the drill body is improved, the service life of the drill body is improved, and auxiliary chip removal can be performed at the same time. By setting the inner diameter of the main channel to be larger than the inner diameter of the boost channel, and the inner diameter of the boost channel to be larger than the inner diameter of the diversion channel, the cooling water can be pressurized for a second time, the flow rate of the cooling water is increased, and the chip removal effect is further improved; by providing a mounting seat composed of a connecting shaft, a guide seat and a buffer connecting section, and providing guide ribs, metal debris can be diverted so that the metal debris is dispersed and discharged, avoiding the metal debris rising in the vertical direction and causing impact on the drill mounting seat and the machine tool, and avoiding wear of the drill mounting seat and the machine tool; by providing O-ring 1 and O-ring 2, the installation sealing of the drill bit can be improved to avoid water leakage.

Claims

1. A drill bit structure with a built-in cooling channel, comprising a drill bit body (1), characterized in that: A mounting seat (2) is fixedly arranged at the top of the drill body (1); a water inlet hole (3) is provided at the center of the top of the mounting seat (2); a plurality of drainage holes (4) are provided at the bottom of the drill body (1); a cooling channel (5) connected to the water inlet hole (3) and the drainage hole (4) is provided inside the drill body (1); the cooling channel (5) is composed of a main channel (6), a transition channel (7), a pressurization channel (8) and a plurality of diversion channels (9); the main channel (6) is located at the top of the drill body (1) and is connected to the water inlet hole (3); the transition channel (7) is located at the bottom of the main channel (6); the pressurization channel (8) is located at the bottom of the transition channel (7); the diversion channel (9) is located at the bottom of the pressurization channel (8) and is connected to the drainage hole (4); and the diversion channel (9) is an inclined structure.

2. A drill bit structure with a built-in cooling channel according to claim 1, characterized in that: The transition channel (7) is a conical structure, the inner diameter of the main channel (6) is larger than the inner diameter of the boost channel (8), and the inner diameter of the boost channel (8) is larger than the inner diameter of the diversion channel (9).

3. The drill bit structure with built-in cooling channel according to claim 1, characterized in that: A plurality of chip removal grooves (10) are provided on the side of the drill body (1), and the chip removal grooves (10) are of a spiral structure.

4. The drill bit structure with built-in cooling channel according to claim 1, characterized in that: The mounting seat (2) is composed of a connecting shaft (11), a flow guide seat (12) and a buffer connecting section (13); the flow guide seat (12) is fixedly connected to the top of the drill body (1) via the buffer connecting section (13); and the connecting shaft (11) is fixedly connected to the top of the flow guide seat (12).

5. The drill bit structure with built-in cooling channel according to claim 4, characterized in that: The side of the buffer connection section (13) is an arc-shaped structure, a plurality of guide ribs (14) are fixedly arranged on the side of the buffer connection section (13), the guide ribs (14) are an inclined structure, and a plurality of plane grooves (15) are arranged on the side of the connecting shaft (11).

6. The drill bit structure with built-in cooling channel according to claim 4, characterized in that: The top end of the connecting shaft (11) is provided with a circular groove 1 (16) and a circular groove 2 (17), an O-type sealing ring 1 (18) is arranged inside the circular groove 1 (16), and an O-type sealing ring 2 (19) is arranged inside the circular groove 2 (17).

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