Built-in water-cooled drill bit

Abstract

The utility model discloses a built-in water cooling drill bit, including drill bit spare, cooling tank, water outlet hole, water inlet hole and water inlet subassembly, and the cooling tank is set up in the top of drill bit spare, and the top fixed sleeve of cooling tank inner chamber has the sealing plug, and the water outlet hole symmetry sets up in the bottom of drill bit spare, and the inner chamber of water outlet hole and the inner chamber of cooling tank intercommunication, and the water inlet hole sets up in the outer wall of drill bit spare, and the inner chamber of water inlet hole and the inner chamber of cooling tank intercommunication, and water inlet subassembly rotation setting is in the outside of drill bit spare, and water inlet subassembly is used for to the inside input cooling liquid of water inlet hole, the utility model discloses the cooperation use mode of drill bit spare and water inlet subassembly, two water outlet holes are inclined and set up from the bottom of drill bit spare, to the outside water flow can enter cooling tank through water inlet subassembly and water inlet hole when drill bit spare rotary work, then is discharged by two inclined water outlet holes, to carry out the cooling to drill bit spare.

Description

Technical Field

[0001] This utility model relates to the field of drill bits, and in particular to a built-in water-cooled drill bit. Background Technology

[0002] Drill bits are cutting tools used to drill through holes or blind holes in solid materials and to enlarge existing holes. Commonly used drill bits include twist drills, flat drills, center drills, deep hole drills, and reaming drills.

[0003] To reduce the risk of drill bit deformation and damage due to high temperatures during operation, coolant is sprayed between the drill bit and the workpiece during operation. However, when the drill bit penetrates a certain depth into the workpiece, part of the drill bit may become embedded inside. As a result, when coolant is sprayed from the outside, it may not be able to enter the drilled hole, thus reducing the cooling effect of the coolant on the drill bit and creating a certain defect. Utility Model Content

[0004] The purpose of this invention is to provide a built-in water-cooled drill bit to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a built-in water-cooled drill bit, comprising: Drill bit components; A cooling tank is provided at the top of the drill bit, and a sealing plug is fixedly fitted to the top of the inner cavity of the cooling tank. Water outlet holes are symmetrically opened at the bottom of the drill bit, and the inner cavity of the water outlet holes is connected to the inner cavity of the cooling tank. A water inlet is provided on the outer wall of the drill bit, and the inner cavity of the water inlet is connected to the inner cavity of the cooling tank. A water inlet assembly is rotatably mounted on the outside of the drill bit and is used to introduce coolant into the water inlet hole.

[0006] Preferably, the water inlet assembly includes: The first liquid supply housing and the second liquid supply housing are symmetrically rotated and sleeved on the outside of the drill bit. The inner cavities of the first liquid supply housing and the second liquid supply housing are connected to the inner cavity of the water inlet hole. A water inlet hose, one end of which is installed on one side of the first liquid supply housing.

[0007] Preferably, the drill bit is externally fixedly fitted with a fixing collar, which is rotatably fitted inside the first and second liquid supply housings. The top and bottom of the inner walls of the first and second liquid supply housings are both fixedly connected with arc plates.

[0008] Preferably, the outer wall of the fixing collar is provided with an annular groove, the arc plate is rotatably sleeved inside the annular groove, the arc plate is rotatably embedded with balls on the side facing the fixing collar, and a shaft seal is provided between the arc plate and the fixing collar.

[0009] Preferably, mounting components are provided on both sides between the first liquid supply housing and the second liquid supply housing, and mounting bolts are provided on the top of one side of the mounting component. The mounting components are used to limit the installation of the first liquid supply housing and the second liquid supply housing.

[0010] Preferably, a fixing block is fixedly connected to the side of both the first liquid supply housing and the side of the second liquid supply housing, and a connecting frame is fixedly connected to the side of the mounting component, the connecting frame being slidably sleeved on the outside of the fixing block.

[0011] The technical effects and advantages of this utility model are as follows: This utility model utilizes the combined use of a drill bit and a water inlet assembly. The drill bit is provided with a cooling groove, a water outlet, and a water inlet. The two water outlets are inclined and opened from the bottom of the drill bit. When the drill bit rotates, external water can enter the cooling groove through the water inlet assembly and the water inlet, and then be discharged through the two inclined water outlets, thereby cooling the drill bit and the workpiece. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the internal structure of the front of this utility model; Figure 2 This is a bottom view of the drill bit component of this utility model. Figure 3 This is a schematic diagram of the overall structure of the mounting component of this utility model.

[0013] In the diagram: 1. Drill bit; 11. Cooling tank; 12. Water outlet; 13. Sealing plug; 14. Water inlet; 2. Water inlet assembly; 21. First liquid supply housing; 211. Shaft seal; 22. Second liquid supply housing; 23. Water inlet hose; 24. Fixing collar; 25. Arc plate; 26. Mounting component; 27. Fixing block; 28. Mounting bolt; 29. ​​Connecting frame. Detailed Implementation

[0014] 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.

[0015] This utility model provides, for example Figure 1-3 The illustrated water-cooled drill bit includes a drill bit component 1, a cooling tank 11, a water outlet 12, a water inlet 14, and a water inlet assembly 2. The cooling tank 11 is located on the top of the drill bit component 1, and a sealing plug 13 is fixedly fitted to the top of the inner cavity of the cooling tank 11. The water outlet 12 is symmetrically located on the bottom of the drill bit component 1, with the bottom end of the water outlet 12 located in the bottom recess of the drill bit component 1. The diameter of the water outlet 12 is limited, which not only avoids affecting the operation of the drill bit component 1 but also reduces the entry of debris into the water outlet 12. The inner cavity of the water outlet 12 is interconnected with the inner cavity of the cooling tank 11. The water inlet 14 is located on the outer wall of the drill bit component 1, and the inner cavity of the water inlet 14 is interconnected with the inner cavity of the cooling tank 11. The water inlet assembly 2 is rotatably mounted. The water inlet assembly 2 is placed outside the drill bit 1 and is used to input coolant into the water inlet hole 14. When the drill bit 1 is rotating, the external coolant can enter the water inlet hole 14 on the drill bit 1 through the water inlet assembly 2, and then enter the interior of the cooling tank 11 through the water inlet hole 14. The sealing plug 13 seals the top of the cooling tank 11, and the coolant inside the cooling tank 11 is discharged from the two water outlet holes 12 at the bottom of the drill bit 1, thereby cooling the drill bit 1. The two water outlet holes 12 are inclined at the bottom of the drill bit 1, so that when the drill bit 1 is working, no corresponding rod-shaped object will be formed at the drill bit position to seal the water outlet holes 12, thereby ensuring the flow of coolant in the drill bit 1 for cooling.

[0016] Furthermore, the water inlet assembly 2 includes a first liquid supply housing 21, a second liquid supply housing 22, and a water inlet hose 23. The first liquid supply housing 21 and the second liquid supply housing 22 are symmetrically rotated and sleeved on the outside of the drill bit 1. The inner cavities of the first liquid supply housing 21 and the second liquid supply housing 22 are interconnected with the inner cavity of the water inlet hole 14. One end of the water inlet hose 23 is installed on one side of the first liquid supply housing 21, and the other end of the water inlet hose 23 is connected to the coolant circulation pump. Thus, the circulation pump delivers coolant through the water inlet hose 23 to the space between the first liquid supply housing 21 and the second liquid supply housing 22. Then, the coolant enters the cooling tank 11 from the water inlet hole 14. A sealing element is provided between the first liquid supply housing 21 and the second liquid supply housing 22 to ensure the sealing between the first liquid supply housing 21 and the second liquid supply housing 22.

[0017] Furthermore, the drill bit assembly 1 is externally fixed with two fixing rings 24. These fixing rings 24 are rotatably fitted inside the first fluid supply housing 21 and the second fluid supply housing 22. Arc plates 25 are fixedly connected to the top and bottom of the inner walls of both the first and second fluid supply housings 21 and 22. Annular grooves are formed on the outer walls of the fixing rings 24, meaning that annular grooves are formed on the opposite sides of both fixing rings 24. The arc plates 25 are rotatably fitted inside the annular grooves. Ball bearings are embedded in the side of the arc plates 25 facing the fixing rings 24, and these ball bearings can reduce the contact between the arc plates 25 and the fixing rings 24. The friction between the rings 24, the shaft seal 211 between the arc plate 25 and the fixed collar 24, and the action of the fixed collar 24, the arc plate 25 and the shaft seal 211 can further improve the sealing between the first liquid supply housing 21 and the second liquid supply housing 22 and the drill bit 1. When the first liquid supply housing 21 and the second liquid supply housing 22 supply coolant into the water inlet 14, if there is a partial coolant leakage between the first liquid supply housing 21 and the second liquid supply housing 22 and the drill bit 1, the coolant can flow down along the drill bit 1, thereby cooling the outside of the drill bit 1.

[0018] In particular, mounting members 26 are provided on both sides of the first liquid supply housing 21 and the second liquid supply housing 22. A mounting bolt 28 is provided on the top of one side of each mounting member 26. The mounting member 26 is used to limit the installation of the first liquid supply housing 21 and the second liquid supply housing 22. When the drill bit 1 is working, it is mounted on the machine tool drill bit chuck, causing the machine tool drill bit chuck to rotate. The mounting member 26 can be mounted on the machine tool drill bit mounting housing using the mounting bolt 28. That is, the mounting member 26 does not rotate with the drill bit 1. Therefore, when the drill bit 1 is rotating, the water inlet assembly 2 does not rotate. Both sides of the first liquid supply housing 21 and the second liquid supply housing 22 are... A fixing block 27 is fixedly connected, and a connecting frame 29 is fixedly connected to the side of the mounting component 26. The connecting frame 29 is slidably sleeved on the outside of the fixing block 27. The two mounting components 26 can be locked to the two sides of the first liquid supply housing 21 and the second liquid supply housing 22 through the two connecting frames 29 and the fixing block 27, thereby ensuring the stability of the first liquid supply housing 21 and the second liquid supply housing 22 installed on the outside of the drill bit component 1. After removing the mounting bolts 28, the mounting component 26 can be disassembled, thereby separating the first liquid supply housing 21 and the second liquid supply housing 22 from the drill bit component 1, so as to facilitate the installation or disassembly of the drill bit component 1.

[0019] 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 built-in water-cooled drill bit, characterized in that, include: Drill bit components (1); Cooling tank (11), the cooling tank (11) is opened at the top of the drill bit (1), and a sealing plug (13) is fixedly sleeved on the top of the inner cavity of the cooling tank (11). Water outlet (12) is symmetrically opened at the bottom of the drill bit (1), and the inner cavity of the water outlet (12) is connected to the inner cavity of the cooling tank (11). Water inlet (14) is provided on the outer wall of the drill bit (1), and the inner cavity of the water inlet (14) is connected to the inner cavity of the cooling tank (11). Water inlet assembly (2), which is rotatably disposed outside the drill bit (1), is used to input coolant into the water inlet hole (14).

2. The built-in water-cooled drill bit according to claim 1, characterized in that, The water inlet assembly (2) includes: The first liquid supply housing (21) and the second liquid supply housing (22) are symmetrically rotated and sleeved on the outside of the drill bit (1). The inner cavities of the first liquid supply housing (21) and the second liquid supply housing (22) are connected to the inner cavity of the water inlet (14). Water inlet hose (23), one end of which is installed on one side of the first liquid supply housing (21).

3. A built-in water-cooled drill bit according to claim 2, characterized in that, The drill bit (1) is fixedly sleeved with a fixing collar (24), which is rotatably sleeved inside the first liquid supply housing (21) and the second liquid supply housing (22). The top and bottom of the inner walls of the first liquid supply housing (21) and the second liquid supply housing (22) are fixedly connected with arc plates (25).

4. A built-in water-cooled drill bit according to claim 3, characterized in that, The outer wall of the fixed collar (24) is provided with an annular groove, the arc plate (25) is rotatably sleeved inside the annular groove, the arc plate (25) is rotatably embedded with a ball on the side facing the fixed collar (24), and a shaft seal (211) is provided between the arc plate (25) and the fixed collar (24).

5. A built-in water-cooled drill bit according to claim 2, characterized in that, Mounting members (26) are provided on the side between the first liquid supply housing (21) and the second liquid supply housing (22). Mounting bolts (28) are provided on the top of one side of the mounting member (26). The mounting member (26) is used to limit the installation of the first liquid supply housing (21) and the second liquid supply housing (22).

6. A built-in water-cooled drill bit according to claim 5, characterized in that, The first liquid supply housing (21) and the second liquid supply housing (22) are both fixedly connected to a fixing block (27), and the mounting component (26) is fixedly connected to a connecting frame (29), which is slidably sleeved on the outside of the fixing block (27).

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