Lengthened cutting drill

Abstract

The utility model belongs to the technical field of machining tools, and particularly relates to a lengthened cutting drill which comprises a cutting drill bit body, a clamping rod and an extension rod, a cooling flow channel is machined in the cutting drill bit body, one end of the extension rod is fixedly connected with the cutting drill bit body, the other end of the extension rod is fixedly connected with the clamping rod, and the clamping rod is fixedly connected with the cutting drill bit body. A liquid injection channel communicated with the cooling flow channel is processed in the extension rod; the first rubber sealing gasket is positioned between the cutting drill bit main body and the extension rod; a sealing screw cap; according to the cutting drill, the overall length of the cutting drill is increased through the arranged extension rods, and a proper number of extension rods can be installed according to actual use requirements, so that different machining requirements are met; a cooling runner is arranged in the cutting drill bit body, a liquid injection channel is arranged in the extension rod, cooling liquid can be injected conveniently, heat exchange can be fully generated between the cooling liquid and the cutting drill bit body, and the heat dissipation efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the field of machining tool technology, specifically relating to an extended cutting drill. Background Technology

[0002] A drill bit is a cutting tool used to drill holes in various materials. Common drill bits include twist drills and gun drills. They are generally composed of a drill tip, a cutting edge, a guide bar, and a drill rod. Through rotation and feed motion, the cutting edge comes into contact with the workpiece material, generating a cutting action to remove the material and form a hole.

[0003] Currently, most cutting drill bits are typically solid structures, and the machine tool's cooling system sprays coolant to cool the drill bit. While this can achieve a certain cooling effect, the high speed at which the drill bit rotates during operation generates a high centrifugal force, preventing the coolant from fully exchanging heat with the drill bit, resulting in poor heat dissipation efficiency.

[0004] A search revealed that in the prior art, Chinese utility model patent with authorization announcement number CN221516212U discloses "a cutting drill bit that is easy to inject coolant", which includes a connector, a fixing rod connected to one side of the connector, a rotating ring provided on the outer wall of the fixing rod, side connecting plates fixed on both sides of the rotating ring, side grooves connected to the outer wall of the side connecting plates, two water blocking plates connected inside the rotating ring, a sealing strip provided on one side of each of the two water blocking plates, a connecting plate connected to the bottom of the sealing strip, and a water inlet opened on the outer surface of the connecting plate.

[0005] While existing cutting drills, including those mentioned above, offer superior heat dissipation, they cannot be lengthened for specific work requirements, such as drilling deep holes or machining workpieces with grooves, resulting in significant limitations in their application.

[0006] To solve the above problems, this utility model proposes an extended cutting drill. Utility Model Content

[0007] To address the aforementioned problems in the existing technology, this utility model provides an extended cutting drill, which is convenient to use, easy to adjust, and has a wide range of applications.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an extended cutting drill, comprising a cutting drill bit body and a clamping rod, wherein a chip removal groove is machined on the outer wall of the cutting drill bit body, and a cooling channel is machined inside the cutting drill bit body, and further comprising:

[0009] An extension rod, one end of which is fixedly connected to the main body of the cutting drill bit and the other end of which is fixedly connected to the clamping rod, and a liquid injection channel communicating with the cooling channel is machined in the extension rod;

[0010] A first rubber sealing gasket is located between the cutting drill body and the extension rod, and a through hole is machined in the first rubber sealing gasket;

[0011] A sealing cap is provided, and an injection nozzle communicating with the injection channel is fixed to the outer wall of the extension rod. The sealing cap is installed on the injection nozzle by means of threaded engagement.

[0012] As a preferred technical solution of this utility model, it also includes:

[0013] A No. 1 connecting flange is fixed to the top of the cutting drill bit body;

[0014] The No. 2 connecting flange is fixed at both the top and bottom of the extension rod;

[0015] The first locking bolt, and a plurality of the first locking bolts are distributed at equal intervals along the circumferential direction, and the first locking bolts penetrate the second connecting flange and the first connecting flange;

[0016] The first locking nut is installed on the protruding end of the first locking bolt by means of thread engagement.

[0017] As a preferred technical solution of this utility model, it also includes:

[0018] The positioning ring is integrally formed on the bottom surface of the first rubber sealing gasket and is embedded in the cooling channel.

[0019] As a preferred embodiment of this utility model, the positioning ring is a frustum-shaped component, and the smaller end of the positioning ring faces downward.

[0020] As a preferred technical solution of this utility model, it also includes:

[0021] The No. 3 connecting flange is fixed to the bottom end of the clamping rod;

[0022] Second locking bolt, multiple second locking bolts are equally spaced along the circumferential direction, and the second locking bolts penetrate the third connecting flange and the second connecting flange;

[0023] The second locking nut is installed on the protruding end of the second locking bolt by means of thread engagement.

[0024] As a preferred technical solution of this utility model, it also includes:

[0025] The second rubber sealing gasket is located between the clamping rod and the extension rod.

[0026] As a preferred technical solution of this utility model, it also includes:

[0027] Limiting rings are fixed at both the top and bottom of the extension rod, and the first rubber sealing gasket and the second rubber sealing gasket are respectively embedded in the corresponding limiting rings.

[0028] As a preferred embodiment of this utility model, the injection channel includes:

[0029] A liquid reservoir is located at the center of the extension rod;

[0030] An upper guide section is provided at the top of the extension rod and communicates with the liquid storage section;

[0031] The lower guide section is located at the bottom end of the extension rod and communicates with the liquid storage section.

[0032] Compared with the prior art, the beneficial effects of this utility model are:

[0033] In this invention, an extension rod is provided to increase the overall length of the cutting drill, and an appropriate number of extension rods can be installed according to actual needs to meet different processing requirements; the cutting drill body has a built-in cooling channel, and the extension rod has a built-in liquid injection channel, which facilitates the injection of coolant, and the coolant can fully exchange heat with the cutting drill body, resulting in high heat dissipation efficiency.

[0034] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0035] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0036] Figure 1 This is a schematic diagram of the structure of this utility model;

[0037] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0038] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the diagram;

[0039] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B in the diagram;

[0040] Figure 5 This utility model Figure 2 Enlarged structural diagram at point C;

[0041] Figure 6 This is a schematic diagram of the cross-sectional structure of the extension rod in this utility model.

[0042] In the diagram: 1. Drill bit body; 11. Chip removal groove; 12. Cooling channel; 13. No. 1 connecting flange; 2. Extension rod; 21. Liquid injection channel; 211. Liquid reservoir; 212. Upper guide section; 213. Lower guide section; 22. No. 2 connecting flange; 23. Liquid injection nozzle; 24. Limiting ring; 3. Clamping rod; 31. No. 3 connecting flange; 4. No. 1 locking bolt; 5. No. 1 locking nut; 6. No. 1 rubber sealing gasket; 61. Through hole; 62. Positioning ring; 7. Sealing cap; 8. No. 2 locking bolt; 9. No. 2 locking nut; 10. No. 2 rubber sealing gasket. Detailed Implementation

[0043] 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.

[0044] Please see Figures 1-6 The present invention provides the following technical solution: an extended cutting drill, including a cutting drill body 1 and a clamping rod 3, a chip removal groove 11 is machined on the outer wall of the cutting drill body 1, a cooling flow channel 12 is machined inside the cutting drill body 1, and also includes: an extension rod 2, a first rubber sealing gasket 6 and a sealing cap 7.

[0045] Furthermore, by Figures 1-4As shown, in this embodiment, one end of the extension rod 2 is fixedly connected to the cutting drill body 1, and the other end is fixedly connected to the clamping rod 3. A liquid injection channel 21 communicating with the cooling channel 12 is machined inside the extension rod 2. A first rubber sealing gasket 6 is located between the cutting drill body 1 and the extension rod 2, and a through hole 61 is machined inside the first rubber sealing gasket 6. A liquid injection nozzle 23 communicating with the liquid injection channel 21 is fixed to the outer wall of the extension rod 2. A sealing cap 7 is installed on the liquid injection nozzle 23 by threaded engagement. With the above scheme, during use, the first rubber sealing gasket 6 is placed between the cutting drill body 1 and the extension rod 2, and one end of the extension rod 2 is fixedly connected to the cutting drill body 1. One end is fixedly connected to the clamping rod 3. The sealing cap 7 is unscrewed, and an appropriate amount of coolant is injected into the injection nozzle 23. The coolant passes through the injection channel 21 and enters the cooling channel 12. The clamping rod 3 is connected to the output shaft of the machine tool, and the output shaft of the machine tool drives the cutting drill body 1 to work. This utility model uses the extension rod 2 to increase the overall length of the cutting drill, and an appropriate number of extension rods 2 can be installed according to actual needs to meet different processing requirements. The cutting drill body 1 has a built-in cooling channel 12, and the extension rod 2 has a built-in injection channel 21, which facilitates the injection of coolant. The coolant can fully exchange heat with the cutting drill body 1, resulting in high heat dissipation efficiency.

[0046] Optionally, by Figures 1-3 As shown, this embodiment also includes: a first connecting flange 13, a second connecting flange 22, a first locking bolt 4, and a first locking nut 5. The first connecting flange 13 is fixed to the top of the cutting drill body 1. The second connecting flange 22 is fixed to both the top and bottom of the extension rod 2. Multiple first locking bolts 4 are evenly spaced along the circumference and pass through the second connecting flange 22 and the first connecting flange 13. The first locking nut 5 is installed on the protruding end of the first locking bolt 4 by thread engagement. With the above scheme, when in use, the extension rod 2 of this utility model is fixedly connected to the cutting drill body 1 by the cooperation of the first connecting flange 13, the second connecting flange 22, the first locking bolt 4, and the first locking nut 5. The installation is convenient and stable, and it is also convenient to disassemble and separate the extension rod 2 from the cutting drill body 1.

[0047] It should be noted that flange connections can typically withstand greater pressure and tensile loads, thus allowing the drill bit body 1 to operate under high load conditions. In addition, flange connections also facilitate the disassembly and separation of the extension rod 2 from the drill bit body 1.

[0048] Preferably, by Figures 1-3As shown, this embodiment also includes a positioning ring 62, which is integrally formed on the bottom surface of the first rubber sealing gasket 6 and embedded in the cooling channel 12. With the above solution, the positioning ring 62 is designed to position the first rubber sealing gasket 6 during use. In addition, the positioning ring 62 ensures that the coolant can reliably enter the cooling channel 12.

[0049] Preferably, by Figures 1-3 As shown in this embodiment, the positioning ring 62 is a frustum-shaped component, and the smaller end of the positioning ring 62 faces downward. With the above scheme, the structural design of the positioning ring 62 has a guiding function when in use, making it easy for the positioning ring 62 to be embedded in the cooling channel 12.

[0050] Optionally, by Figure 1 , Figure 2 and Figure 5 As shown, this embodiment also includes: a third connecting flange 31, a second locking bolt 8, and a second locking nut 9. The third connecting flange 31 is fixed to the bottom end of the clamping rod 3. Multiple second locking bolts 8 are evenly distributed along the circumferential direction, and the second locking bolts 8 pass through the third connecting flange 31 and the second connecting flange 22. The second locking nut 9 is installed on the protruding end of the second locking bolt 8 by thread engagement. With the above scheme, when in use, the clamping rod 3 of this utility model is fixedly connected to the extension rod 2 by the cooperation of the second connecting flange 22, the third connecting flange 31, the second locking bolt 8, and the second locking nut 9. The installation is convenient and stable, and it is also convenient to disassemble and separate the clamping rod 3 and the extension rod 2.

[0051] Preferably, by Figure 1 , Figure 2 and Figure 5 As shown, this embodiment also includes a second rubber sealing gasket 10, which is located between the clamping rod 3 and the extension rod 2. With the above solution, when the clamping rod 3 is installed, the second rubber sealing gasket 10 shrinks, which improves the sealing performance of the connection between the clamping rod 3 and the extension rod 2.

[0052] It should be noted that the second rubber sealing gasket 10 is a solid structure, unlike the first rubber sealing gasket 6. In addition to improving the sealing of the connection between the clamping rod 3 and the extension rod 2, the second rubber sealing gasket 10 is also used to prevent coolant from flowing out from the top of the extension rod 2.

[0053] Preferably, by Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, this embodiment also includes: a limiting ring 24. A limiting ring 24 is fixed at both the top and bottom of the extension rod 2. The first rubber sealing gasket 6 and the second rubber sealing gasket 10 are respectively embedded in the corresponding limiting ring 24. With the above scheme, when in use, the limiting ring 24 is designed to position the first rubber sealing gasket 6 and the second rubber sealing gasket 10 to ensure the stability of the installation of the first rubber sealing gasket 6 and the second rubber sealing gasket 10.

[0054] Preferably, by Figure 1 , Figure 2 and Figure 6 As shown, in this embodiment, the liquid injection channel 21 includes: a liquid storage section 211, an upper guide section 212, and a lower guide section 213. The liquid storage section 211 is located at the center of the extension rod 2. The upper guide section 212 is opened at the top of the extension rod 2 and communicates with the liquid storage section 211. The lower guide section 213 is opened at the bottom of the extension rod 2 and communicates with the liquid storage section 211. With the above scheme, when in use, the upper guide section 212 is mainly used to connect multiple extension rods 2 when they are connected at the end. The liquid storage section 211 is used to store coolant.

[0055] Components not described in detail in this article are existing technologies.

[0056] The working principle and usage process of this utility model: When using the cutting drill bit body 1 of this utility model, the No. 1 rubber sealing gasket 6 is placed between the cutting drill bit body 1 and the extension rod 2, and one end of the extension rod 2 is fixedly connected to the cutting drill bit body 1 and the other end is fixedly connected to the clamping rod 3.

[0057] Unscrew the sealing cap 7 and inject an appropriate amount of coolant into the injection nozzle 23. The coolant passes through the injection channel 21 and enters the cooling channel 12. The clamping rod 3 is connected to the output shaft of the machine tool and drives the cutting drill body 1 to work through the output shaft of the machine tool.

[0058] This utility model uses an extension rod 2 to increase the overall length of the cutting drill, and can install an appropriate number of extension rods 2 according to actual needs to meet different processing requirements; the cutting drill body 1 has a built-in cooling channel 12, and the extension rod 2 has a built-in liquid injection channel 21, which facilitates the injection of coolant, and the coolant can fully exchange heat with the cutting drill body 1, resulting in high heat dissipation efficiency.

[0059] In another aspect of this utility model, the extension rod 2 is fixedly connected to the cutting drill body 1 by means of a first connecting flange 13, a second connecting flange 22, a first locking bolt 4, and a first locking nut 5. The clamping rod 3 is fixedly connected to the extension rod 2 by means of a second connecting flange 22, a third connecting flange 31, a second locking bolt 8, and a second locking nut 9. This makes installation convenient and stable, and also facilitates disassembly and separation.

[0060] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. An extended cutting drill, comprising a cutting drill body (1) and a clamping rod (3), wherein a chip removal groove (11) is machined on the outer wall of the cutting drill body (1), and a cooling channel (12) is machined inside the cutting drill body (1), characterized in that, Also includes: An extension rod (2) is fixedly connected at one end to the main body of the cutting drill bit (1) and at the other end to the clamping rod (3). A liquid injection channel (21) communicating with the cooling channel (12) is machined in the extension rod (2). A first rubber sealing gasket (6) is located between the cutting drill body (1) and the extension rod (2), and a through hole (61) is machined in the first rubber sealing gasket (6); A sealing cap (7) is fixed on the outer wall of the extension rod (2) with an injection nozzle (23) communicating with the injection channel (21). The sealing cap (7) is installed on the injection nozzle (23) by means of threaded engagement.

2. The extended cutting drill according to claim 1, characterized in that: Also includes: A first connecting flange (13) is fixed to the top of the cutting drill body (1); The No. 2 connecting flange (22) is fixed at both the top and bottom of the extension rod (2); The first locking bolt (4) is distributed at equal intervals along the circumferential direction, and the first locking bolt (4) passes through the second connecting flange (22) and the first connecting flange (13); Locking nut (5) No. 1 is installed on the protruding end of locking bolt (4) by means of thread engagement.

3. An extended cutting drill according to claim 1, characterized in that: Also includes: Positioning ring (62) is integrally formed on the bottom surface of the first rubber sealing gasket (6) and is embedded in the cooling channel (12).

4. An extended cutting drill according to claim 3, characterized in that: The positioning ring (62) is a frustum-shaped component, and the smaller end of the positioning ring (62) faces downward.

5. An extended cutting drill according to claim 2, characterized in that: Also includes: The No. 3 connecting flange (31) is fixed to the bottom end of the clamping rod (3); Second locking bolt (8), a plurality of second locking bolts (8) are equally spaced along the circumferential direction, and the second locking bolts (8) penetrate the third connecting flange (31) and the second connecting flange (22); The second locking nut (9) is installed on the protruding end of the second locking bolt (8) by means of thread engagement.

6. An extended cutting drill according to claim 1, characterized in that: Also includes: The second rubber sealing gasket (10) is located between the clamping rod (3) and the extension rod (2).

7. An extended cutting drill according to claim 6, characterized in that: Also includes: Limiting rings (24) are fixed at both the top and bottom of the extension rod (2), and the first rubber sealing gasket (6) and the second rubber sealing gasket (10) are respectively embedded in the corresponding limiting rings (24).

8. An extended cutting drill according to claim 1, characterized in that: The injection channel (21) includes: Liquid reservoir (211) is located at the center of the extension rod (2); The upper guide section (212) is located at the top of the extension rod (2) and communicates with the liquid storage section (211); The lower guide section (213) is located at the bottom end of the extension rod (2) and communicates with the liquid storage section (211).

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