Efficient cooling device for drill bit of drilling machine

Abstract

The utility model discloses an efficient cooling device for a drill bit of a drilling machine, which relates to the technical field of cooling of the drill bit of the drilling machine and aims to solve the technical problem that the cooling effect of the current cooling device on the drill bit is poor, the efficient cooling device comprises a drilling machine main body, and a box body is arranged on a base at the top of the drilling machine main body. The spray head is fixed on a drilling machine by arranging the adjusting frame, then the flow guide cavity is arranged in the spraying section of the spray head, the flow guide cavity is spiral, the center axis of the spray head is aligned with the axis of a drill bit, and the bottom opening of the flow guide cavity is connected with the matched spiral spray head. Firstly, the position of the spray head is adjusted through the adjusting frame, the spray head is adjusted to a proper position, liquid flow sprayed by the spray head can be sprayed to a drill bit, after cooling liquid enters the spray head, the cooling liquid flows along the spiral flow guide cavity and then is sprayed out of the spiral spray head through a spiral track, and rotary liquid flow is formed.

Description

Technical Field

[0001] This utility model relates to the field of drill bit cooling technology, and more specifically, to a high-efficiency cooling device for drill bits. Background Technology

[0002] In the field of metal processing, drill bits on drilling machines generate a lot of heat during high-speed rotation and cutting. If they are not cooled in time, they can easily lead to increased wear, reduced machining accuracy, or even breakage. Therefore, it is necessary to install a cooling device on the drilling machine to cool the drill bit. The cooling device usually uses a delivery pump to transport coolant from the tank to the nozzle, and then the nozzle directly sprays the coolant onto the drill bit to achieve the cooling effect.

[0003] Existing cooling devices typically use a single nozzle to spray coolant in a straight line to cool the drill bit. This straight-line spraying method has several problems: 1. It is difficult to cover the entire circumferential surface of the drill bit, resulting in uneven cooling; 2. The centrifugal force generated by the drill bit's rotation is not effectively utilized, preventing the coolant from fully diffusing to the cutting area; 3. The coolant flows in a single direction, resulting in weak chip scouring and chip accumulation. In summary, this spraying method is ineffective for cooling the drill bit. Therefore, we propose a high-efficiency cooling device for drill bits. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a high-efficiency cooling device for drill bits of drilling machines, so as to solve the technical problem that the current cooling devices do not have a good cooling effect on drill bits.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-efficiency cooling device for drill bits of a drilling machine, including a drilling machine body, a box arranged on the top base of the drilling machine body, a delivery pump arranged on the box, the input end of the delivery pump being connected to the output end of the box through a hose, an adjustment frame arranged on one side of the top base of the drilling machine body, and a nozzle arranged on the adjustment frame, the nozzle including a storage cavity section and a spray section, the spray section being located at the bottom of the storage cavity section, the top opening of the storage cavity section being connected to the output end of the delivery pump through a hose, a guide cavity being opened in the spray section, and a spiral spray head arranged at the bottom of the spray section, and the spiral spray head being connected to the bottom opening of the guide cavity;

[0006] The flow guiding cavity includes a first flow guiding section, a second flow guiding section, and a third flow guiding section, which are arranged sequentially from top to bottom.

[0007] Preferably, the nozzle is symmetrically arranged with the drill bit on the drill body, and the central axis of the nozzle is parallel to the central axis of the drill bit on the drill body.

[0008] Preferably, the adjusting frame includes a first perforated plate, which is arranged on the top base of the drilling machine body. A first mounting bracket is inserted into the first perforated plate, a second perforated plate is arranged at the bottom of the first mounting bracket, a second mounting bracket is inserted into the second perforated plate, and the nozzle is arranged on one side of the second mounting bracket.

[0009] Preferably, the first mounting bracket and the second mounting bracket are arranged in a T-shape, and two sets of fixing bolts corresponding to the first mounting bracket are arranged on one side of the first perforated plate, and fixing bolts are arranged at the front and rear center of the second perforated plate.

[0010] Preferably, the top of the first guide section is connected to the inner cavity of the storage cavity section, the bottom of the first guide section is connected to the top of the second guide section, the bottom of the second guide section is connected to the top of the third guide section, and the bottom of the third guide section is connected to the top of the spiral jet head.

[0011] Preferably, the pitches of the first, second, and third guide sections decrease sequentially, the inner diameters of the first, second, and third guide sections decrease sequentially, and the pitch and inner diameter of the spiral jet head are the same as those of the third guide section.

[0012] Preferably, the bottom of the spiral jet head faces the drill bit on the drill body.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses an adjusting frame to fix the nozzle on the drill press. A guide cavity, spiral in shape, is set within the nozzle's spray section, with the nozzle's central axis aligned with the drill bit's axis. A matching spiral-shaped spray head is connected to the bottom of the guide cavity. When cooling the drill bit, the nozzle position is first adjusted using the adjusting frame to ensure the coolant sprayed from the nozzle reaches the drill bit. After the coolant enters the nozzle, it flows along the spiral guide cavity and then exits through the spiral spray head, forming a rotating liquid flow. This rotating liquid flow, possessing both axial and tangential velocity, exhibits a circumferential motion tendency before contacting the drill bit. The high-speed rotation of the drill bit further enhances the cooling effect. Under the combined effect of centrifugal force generated by the rotation, the sprayed liquid flow adheres to the surface of the drill bit due to viscosity after contacting it and rotates with the drill bit. At this time, the centrifugal force acts as a driving force, causing the coolant to spread rapidly along the circumference of the drill bit, filling the "circumferential coverage blind zone" of traditional straight-line spraying. Therefore, with the synergistic effect of the tangential velocity of the rotating jet and the centrifugal force of the drill bit, the coolant can quickly form a circumferential coverage contact with the drill bit. Moreover, the rotational characteristics of the spiral liquid flow and the centrifugal force together form a "sweeping" effect on the cutting area, which can quickly remove heat and chips, reduce chip accumulation, and avoid local overheating. This can greatly improve the cooling effect on the drill bit and solve the technical problem of poor cooling effect of current cooling devices. Therefore, this utility model has the advantage of better cooling effect on drill bits.

[0015] 2. The spiral guide cavity of this utility model is divided into three spiral sections: a first guide section, a second guide section, and a third guide section. These sections are arranged sequentially from top to bottom, with the pitch and inner diameter decreasing sequentially. The cross-sectional area also decreases sequentially. The pitch and cross-sectional area of ​​the third guide section are the same as those of the spiral spray head. Therefore, the first guide section allows the coolant to begin rotating more smoothly after entering, preventing the coolant from impacting the cavity wall and causing excessive pressure. Energy loss is minimized. The second guide section makes the rotation trend of the coolant more obvious, further enhancing its tangential velocity. The third guide section and the spiral nozzle make the rotation direction of the coolant closer to the circumferential direction, which is beneficial for the coolant to better cover the circumferential surface of the drill bit after leaving the spiral nozzle. Therefore, with the cooperation of the three-stage spiral guide, the flow of coolant can be graded and rectified, reducing the generation of turbulence and eddies. This can effectively ensure that the coolant can be sprayed out in a stable and uniform state along the circumference, improving the uniformity of coverage and ensuring the cooling effect on the drill bit. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the adjustment frame structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the nozzle structure of this utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the nozzle of this utility model.

[0020] Explanation of the labels in the diagram:

[0021] 1. Drilling machine body; 2. Housing; 3. Conveyor pump; 4. Adjustment frame; 401. First orifice plate; 402. First mounting frame; 403. Second orifice plate; 404. Second mounting frame; 405. Fixing bolt; 5. Nozzle; 501. Storage chamber section; 502. Spraying section; 503. Spiral spray head; 6. Guide chamber; 601. First guide section; 602. Second guide section; 603. Third guide section. Detailed Implementation

[0022] like Figures 1 to 4 As shown, this utility model relates to a high-efficiency cooling device for drill bits on a drilling machine, comprising a drilling machine body 1, a housing 2 arranged on the top base of the drilling machine body 1, a delivery pump 3 arranged on the housing 2, the input end of the delivery pump 3 being connected to the output end of the housing 2 via a hose, an adjustment frame 4 arranged on one side of the top base of the drilling machine body 1, and a nozzle 5 arranged on the adjustment frame 4, the nozzle 5 comprising a storage cavity section 501 and a spray section 502, the spray section 502 being located at the bottom of the storage cavity section 501, the top opening of the storage cavity section 501 being connected to the output end of the delivery pump 3 via a hose, a guide cavity 6 being formed inside the spray section 502, and a spiral spray head 503 arranged at the bottom of the spray section 502, the spiral spray head 503 being connected to the bottom opening of the guide cavity 6; the nozzle 5 being symmetrically arranged with the drill bits on the drilling machine body 1, and the central axis of the nozzle 5 being parallel to the central axis of the drill bits on the drilling machine body 1; the bottom opening of the spiral spray head 503 facing the drill bits on the drilling machine body 1;

[0023] When cooling the drill bit, the position of the nozzle 5 is first adjusted using the adjusting bracket 4 to ensure that the liquid stream ejected from the nozzle 5 can reach the drill bit. After the coolant enters the nozzle 5, it flows along the spiral guide cavity 6 and then exits from the spiral nozzle 503 via a spiral trajectory, forming a rotating liquid stream. This rotating liquid stream is ejected onto the drill bit. Because the rotating liquid stream possesses both axial and tangential velocity, the tangential velocity gives it a tendency to move circumferentially before contacting the drill bit. Then, under the centrifugal force generated by the high-speed rotation of the drill bit, the ejected liquid stream... Upon contact with the drill bit, the coolant adheres to its surface due to viscosity and rotates with the drill bit. At this time, centrifugal force acts as the driving force, causing the coolant to spread rapidly along the circumference of the drill bit, filling the "circumferential coverage blind zone" of traditional straight-line spray. Therefore, with the tangential velocity of the rotating jet and the centrifugal force of the drill bit working together, the coolant can quickly form a circumferential coverage contact with the drill bit. Moreover, the rotational characteristics of the spiral liquid flow and the centrifugal force together create a "sweeping" effect on the cutting area, which can quickly remove heat and chips, reduce chip accumulation, and avoid local overheating, thereby greatly improving the cooling effect on the drill bit.

[0024] Specifically, the adjusting frame 4 includes a first perforated plate 401, which is arranged on the top base of the drilling machine body 1. A first mounting bracket 402 is inserted into the first perforated plate 401. A second perforated plate 403 is arranged at the bottom of the first mounting bracket 402. A second mounting bracket 404 is inserted into the second perforated plate 403. The nozzle 5 is arranged on one side of the second mounting bracket 404. The first mounting bracket 402 and the second mounting bracket 404 are arranged in a T-shape. Two sets of fixing bolts 405 corresponding to the first mounting bracket 402 are arranged on one side of the first perforated plate 401. The second orifice plate 403 has fixing bolts 405 arranged at the front and rear center. The height of the nozzle 5 can be adjusted by sliding the first mounting bracket 402 in the first orifice plate 401. Then, the fixing bolts 405 on the first orifice plate 401 are tightened to fix the first mounting bracket 402. Then, the horizontal position of the nozzle 5 can be adjusted by sliding the second mounting bracket 404 in the first orifice plate 401 to adjust the distance between the nozzle 5 and the drill bit. Then, the fixing bolts 405 on the first orifice plate 401 are tightened to fix the first mounting bracket 402.

[0025] In an embodiment of this utility model, the flow guiding cavity 6 includes a first flow guiding section 601, a second flow guiding section 602, and a third flow guiding section 603, arranged sequentially from top to bottom. The top of the first flow guiding section 601 communicates with the inner cavity of the storage cavity section 501, the bottom of the first flow guiding section 601 is connected to the top of the second flow guiding section 602, the bottom of the second flow guiding section 602 is connected to the top of the third flow guiding section 603, and the bottom of the third flow guiding section 603 is connected to the top of the spiral spray head 503. The pitch of the first flow guiding section 601, the second flow guiding section 602, and the third flow guiding section 603 decreases sequentially, and the inner cavity diameter of the first flow guiding section 601, the second flow guiding section 602, and the third flow guiding section 603 decreases sequentially. The pitch and inner cavity diameter of the spiral spray head 503 are the same as those of the third flow guiding section 603.

[0026] The first guide section 601 allows the coolant to begin rotating more smoothly after entering, avoiding significant energy loss due to the coolant impacting the cavity wall. The second guide section 602 makes the rotation trend of the coolant more obvious, further enhancing its tangential velocity. The third guide section 603 and the spiral nozzle 503 make the rotation direction of the coolant closer to the circumferential direction, which is beneficial for the coolant to better cover the circumferential surface of the drill bit after leaving the spiral nozzle 503. Therefore, with the cooperation of the three-stage spiral guide, the flow of coolant can be graded and rectified, reducing the generation of turbulence and eddies. This can effectively ensure that the coolant can be sprayed out in a stable and uniform state along the circumference, improving the uniformity of coverage and ensuring the cooling effect on the drill bit.

[0027] Working Principle: This embodiment provides a high-efficiency cooling device for drill bits. Firstly, when cooling the drill bit, the position of the nozzle 5 is adjusted using the adjusting bracket 4 to a suitable position so that the liquid flow from the nozzle 5 can be sprayed onto the drill bit. After the coolant enters the nozzle 5, it flows along the spiral guide cavity 6 and then is ejected from the spiral nozzle 503 via a spiral trajectory, forming a rotating liquid flow. This rotating liquid flow is sprayed onto the drill bit. Because the rotating liquid flow has both axial and tangential velocity, the tangential velocity gives it a tendency to move circumferentially before contacting the drill bit. Then, the high-speed rotation of the drill bit... With the help of centrifugal force, the sprayed liquid flow adheres to the surface of the drill bit due to viscosity after contacting it and rotates with the drill bit. At this time, the centrifugal force acts as a driving force, causing the coolant to spread rapidly along the circumference of the drill bit, filling the "circumferential coverage blind zone" of traditional straight-line spray. Therefore, with the tangential velocity of the rotating jet and the centrifugal force of the drill bit working together, the coolant can quickly form a circumferential coverage contact with the drill bit. Moreover, the rotational characteristics of the spiral liquid flow and the centrifugal force together form a "sweeping" effect on the cutting area, which can quickly remove heat and chips, reduce chip accumulation, and avoid local overheating, thereby greatly improving the cooling effect on the drill bit.

[0028] Secondly, the first guide section 601 allows the coolant to begin rotating more smoothly after entering, avoiding significant energy loss due to the coolant impacting the cavity wall. The second guide section 602 makes the rotation trend of the coolant more obvious, further enhancing its tangential velocity. The third guide section 603 and the spiral nozzle 503 make the rotation direction of the coolant closer to the circumferential direction, which is beneficial for the coolant to better cover the circumferential surface of the drill bit after leaving the spiral nozzle 503. Therefore, with the cooperation of the three-stage spiral guide, the flow of coolant can be graded and rectified, reducing the generation of turbulence and eddies. This can effectively ensure that the coolant can be sprayed out in a stable and uniform state along the circumference, improving the uniformity of coverage and ensuring the cooling effect on the drill bit.

[0029] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A high-efficiency cooling device for drill bits of a drilling machine, characterized in that, The system includes a drilling machine body (1), a housing (2) is arranged on the top base of the drilling machine body (1), a delivery pump (3) is arranged on the housing (2), the input end of the delivery pump (3) is connected to the output end of the housing (2) through a hose, an adjustment frame (4) is arranged on one side of the top base of the drilling machine body (1), and a nozzle (5) is arranged on the adjustment frame (4). The nozzle (5) includes a storage cavity section (501) and a spray section (502). The spray section (502) is located at the bottom of the storage cavity section (501). The top opening of the storage cavity section (501) is connected to the output end of the delivery pump (3) through a hose. A guide cavity (6) is opened in the spray section (502). A spiral spray head (503) is arranged at the bottom of the spray section (502), and the spiral spray head (503) is connected to the bottom opening of the guide cavity (6). The flow guiding cavity (6) includes a first flow guiding section (601), a second flow guiding section (602) and a third flow guiding section (603), which are arranged sequentially from top to bottom.

2. The high-efficiency cooling device for drill bits of a drilling machine according to claim 1, characterized in that, The nozzle (5) is symmetrically arranged with the drill bit on the drill body (1), and the central axis of the nozzle (5) is parallel to the central axis of the drill bit on the drill body (1).

3. The high-efficiency cooling device for drill bits of a drilling machine according to claim 1, characterized in that, The adjusting frame (4) includes a first perforated plate (401), which is arranged on the top base of the drilling machine body (1). A first mounting bracket (402) is inserted into the first perforated plate (401), and a second perforated plate (403) is arranged at the bottom of the first mounting bracket (402). A second mounting bracket (404) is inserted into the second perforated plate (403), and the nozzle (5) is arranged on one side of the second mounting bracket (404).

4. The high-efficiency cooling device for drill bits of a drilling machine according to claim 3, characterized in that, The first mounting bracket (402) and the second mounting bracket (404) are arranged in a T-shape. Two sets of fixing bolts (405) corresponding to the first mounting bracket (402) are arranged on one side of the first perforated plate (401), and fixing bolts (405) are arranged in the center of the front and rear of the second perforated plate (403).

5. The high-efficiency cooling device for drill bits of a drilling machine according to claim 1, characterized in that, The top of the first guide section (601) is connected to the inner cavity of the storage cavity section (501), the bottom of the first guide section (601) is connected to the top of the second guide section (602), the bottom of the second guide section (602) is connected to the top of the third guide section (603), and the bottom of the third guide section (603) is connected to the top of the spiral spray head (503).

6. The high-efficiency cooling device for drill bits of a drilling machine according to claim 1, characterized in that, The pitches of the first guide section (601), the second guide section (602), and the third guide section (603) decrease sequentially, and the inner diameters of the first guide section (601), the second guide section (602), and the third guide section (603) decrease sequentially. The pitch and inner diameter of the spiral jet head (503) are the same as those of the third guide section (603).

7. The high-efficiency cooling device for drill bits of a drilling machine according to claim 1, characterized in that, The bottom opening of the spiral jet head (503) faces the drill bit on the drill body (1).

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