Inner-cooling bottoming drill for deep hole machining

Abstract

The utility model belongs to the technical field of bottoming drills, particularly relates to an inner-cooling bottoming drill for deep hole machining, and aims to solve the problem that chippings enter holes in the prior art, the inner-cooling bottoming drill for deep hole machining comprises a drill rod, a drill bit is fixedly installed at the bottom end of the drill rod, and a cleaning mechanism is arranged outside the drill rod. The cleaning mechanism comprises a sliding groove, the sliding groove is formed in the outer wall of the drill rod, the position is adjusted through the sleeving ring to press the connecting ring, the cleaning mechanism is rapidly disassembled and assembled under limiting of a sliding block of the sliding groove, a first brush at the bottom end of an abutting-against plate abuts against a workpiece through a penetrating-out plate slidably connected with the fixing shell, and therefore the workpiece can be cleaned conveniently. According to the drilling machine, the drill bit can rotate in a manner of being attached to a workpiece according to rotation of the drill bit, scraps discharged through the scrap discharging groove are pushed and thrown out through centrifugal motion, the situation that accumulation is caused, the drill bit enters a hole after being pulled out, and the workpiece is affected is avoided, meanwhile, piston motion is formed in cooperation with a limiting plate and a rubber pad, and the stability of displacement of a penetrating-out plate is improved.

Description

Technical Field

[0001] This utility model relates to an internally cooled flat-bottom drill, specifically an internally cooled flat-bottom drill for deep hole machining, belonging to the field of flat-bottom drill technology. Background Technology

[0002] A flat-bottom drill bit is a tool used for drilling holes. Its cutting edge is flat-bottomed, unlike the pointed cutting edge of traditional drill bits, allowing it to create a flat-bottomed hole during drilling. The cutting edge is sharp and wear-resistant, effectively cutting various materials. During drilling, the flat-bottom drill bit rotates and applies axial pressure, bringing the cutting edge into contact with the workpiece material. Utilizing the sharpness and hardness of the cutting edge, it gradually removes the workpiece material, forming the desired flat-bottomed hole.

[0003] In the prior art, such as the carbide internal cooling flat-bottom drill disclosed in CN215392673U, the flat-bottom drill is reasonably designed. The entire flat-bottom drill is made of carbide material to form a cylindrical structure, and the top of the flat-bottom drill is set as a horizontal surface structure to ensure the overall hardness of the flat-bottom drill and reduce the damage rate. The side wall of the flat-bottom drill is provided with a concave chip removal groove. There are four chip removal grooves in total, which are arranged in a spiral structure. The chip removal grooves quickly remove the waste chips generated during milling and prevent the accumulation of waste chips. The inside of the chip removal groove is provided with coolant spray holes. The coolant spray holes are micro holes with a diameter of 1 mm, which are densely arranged in the chip removal groove and are connected to the water injection chamber. The coolant is sprayed through the coolant spray holes and drives the coolant to flow inside the flat-bottom drill, thereby realizing the internal cooling of the flat-bottom drill.

[0004] However, in implementing the relevant technology, the following problems were found in the internal cooling flat bottom drill of the above-mentioned cemented carbide design: In the prior art, the chip removal effect can be achieved by the cooperation of components such as chip relief grooves. However, in the actual use, these chips will accumulate near the hole after being discharged. When the flat bottom drill is pulled out, the accumulated chips may fall into the hole, which may affect the use of the entire workpiece or equipment. In view of this, an internal cooling flat bottom drill for deep hole machining is provided to overcome the above defects. Utility Model Content

[0005] This invention provides an internally cooled flat-bottom drill for deep hole machining to address the problem that debris accumulates near holes after being discharged, and may fall into the hole when the flat-bottom drill is pulled out, potentially affecting the use of the entire workpiece or equipment.

[0006] The present invention achieves the above objectives through the following technical solution: an internal cooling flat bottom drill for deep hole machining, comprising a drill rod, wherein a drill bit is fixedly installed at the bottom end of the drill rod, and a cleaning mechanism is provided on the outside of the drill rod;

[0007] The cleaning mechanism includes a chute, which is formed on the outer wall of the drill rod. A connecting ring is slidably connected to one side of the chute on the outer wall of the drill rod. A sleeve ring is slidably connected above the connecting ring on the outer wall of the drill rod. A slider is fixedly installed on the side of the connecting ring facing the chute. A fixing shell is fixedly installed at the bottom end of the connecting ring, and a through plate extends through the inside of the fixing shell.

[0008] As a further embodiment of this utility model: a contact plate is fixedly installed at the bottom end of the through plate, and a roller is rotatably connected to one side of the lower part of the contact plate, and a first brush is embedded on the other side of the lower part of the contact plate.

[0009] As a further improvement of this utility model: the sleeve ring is threadedly connected to the drill rod, and the sleeve ring and the connecting ring are tightly fitted together.

[0010] As a further embodiment of this utility model: a limiting plate is fixedly installed at one end of the through plate that penetrates into the fixed shell, and a rubber pad is embedded at the top of the limiting plate; and a pressure relief hole is provided on the outer wall of the fixed shell.

[0011] As a further improvement of this utility model: the inner wall of the through plate is fitted with a sleeve, and the inside of the sleeve is provided with a scraping mechanism.

[0012] As a further embodiment of this utility model: the scraping mechanism includes a spring, the spring being embedded inside the sleeve, and a through rod extending out from inside the sleeve.

[0013] As a further embodiment of this utility model: a pressing plate is fixedly installed at one end of the protruding rod that protrudes from the sleeve, and a second brush is embedded in the outer wall of the pressing plate facing the drill bit.

[0014] The beneficial effects of this utility model are as follows: by adjusting the position of the sleeve ring to press the connecting ring, and under the limit of the sliding block of the slide groove, the cleaning mechanism can be quickly disassembled and assembled. The through-hole plate connected by the fixed shell allows the first brush at the bottom of the contact plate to contact the workpiece. It can fit the workpiece rotation according to the rotation of the drill bit, push the debris discharged through the chip removal groove, and throw it outward by centrifugal motion, avoiding the accumulation of debris that enters the hole after the drill bit is pulled out, thus affecting the workpiece. At the same time, the piston movement formed by the limiting plate and the rubber pad improves the stability of the displacement of the through-hole plate.

[0015] The beneficial effects of this utility model are: the sleeve pushes the through rod through the spring elasticity, so that the pressing plate drives the second brush to adhere to the outer wall of the drill bit, thereby scraping and cleaning the corresponding position of the drill bit, thus avoiding the situation where debris is difficult to remove and causes blockage. The second brush is formed into a cylindrical shape through the outer shell, which can be fitted onto the outer wall of the drill bit to achieve a cleaning effect, avoiding the troublesome secondary cleaning required by the workers. At the same time, the second brush is a long brush that can penetrate into the chip removal groove of 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 connecting ring structure of this utility model;

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

[0019] Figure 4 This utility model Figure 1 Enlarged view of point A in the middle;

[0020] Figure 5 This is a schematic diagram of the pressing plate structure of this utility model.

[0021] In the diagram: 1. Drill rod; 2. Drill bit; 3. Cleaning mechanism; 301. Slide groove; 302. Connecting ring; 303. Sliding block; 304. Sleeve ring; 305. Fixed shell; 306. Through plate; 307. Contact plate; 308. Roller; 309. First brush; 4. Limiting plate; 5. Rubber pad; 6. Pressure relief hole; 7. Sleeve; 8. Scraping mechanism; 801. Spring; 802. Through rod; 803. Pressing plate; 804. Second brush. Detailed Implementation

[0022] 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. Example 1

[0023] like Figures 1 to 5As shown, a deep hole drilling internal cooling flat bottom drill includes a drill rod 1, a drill bit 2 fixedly mounted at the bottom end of the drill rod 1, and a cleaning mechanism 3 provided on the outside of the drill rod 1. The cleaning mechanism 3 includes a slide groove 301, which is formed on the outer wall of the drill rod 1. A connecting ring 302 is slidably connected to one side of the slide groove 301 on the outer wall of the drill rod 1. A sleeve ring 304 is slidably connected above the connecting ring 302 on the outer wall of the drill rod 1. A slider 303 is fixedly mounted on the side of the connecting ring 302 facing the slide groove 301. A fixing shell 305 is fixedly mounted at the bottom end of the connecting ring 302. A through plate 306 extends through the inside of the fixing shell 305. An abutment plate 307 is fixedly mounted at the bottom end of the through plate 306. A roller 308 is rotatably connected to one side of the lower part of the abutment plate 307. A first brush 309 is embedded on the other side of the lower part of the abutment plate 307. The sleeve ring 304 is threaded to the drill rod 1. Next, the sleeve ring 304 and the connecting ring 302 fit tightly together. The end of the through plate 306 that passes through the fixed shell 305 is fixedly installed with a limiting plate 4. The top of the limiting plate 4 is fitted with a rubber pad 5. The outer wall of the fixed shell 305 is provided with a pressure relief hole 6. The position of the sleeve ring 304 is adjusted to press the connecting ring 302, and the cleaning mechanism 3 is quickly disassembled and assembled under the limitation of the slider 303 of the slide groove 301. The through plate 306, which is slidably connected to the fixed shell 305, allows the first brush 309 at the bottom of the contact plate 307 to contact the workpiece. It can fit the workpiece according to the rotation of the drill bit 2, push the debris discharged through the chip removal groove, and throw it outward by centrifugal motion to avoid the accumulation of debris that enters the hole after the drill bit 2 is pulled out, which would affect the workpiece. At the same time, it works with the limiting plate 4 and the rubber pad 5 to form a piston movement, which improves the stability of the displacement of the through plate 306. Example 2

[0024] In addition to all the technical features in Embodiment 1, this embodiment also includes: a sleeve 7 is embedded in the inner wall of the through-plate 306, a scraping mechanism 8 is provided inside the sleeve 7, the scraping mechanism 8 includes a spring 801, the spring 801 is embedded inside the sleeve 7, a through-rod 802 extends out of the sleeve 7, a pressing plate 803 is fixedly installed at one end of the through-rod 802 extending out of the sleeve 7, and a second brush 804 is embedded in the pressing plate 803 facing the outer wall of the drill bit 2; the sleeve 7 elastically pushes the through-rod 802 through the spring 801, so that the pressing plate 803 drives the second brush 804 to adhere to the outer wall of the drill bit 2, thereby scraping and cleaning the corresponding position of the drill bit 2, thereby avoiding the situation where debris is difficult to remove and causes blockage. The second brush 804 is in the form of a cylinder through the outer shell, which can be sleeved on the outer wall of the drill bit 2 to achieve a cleaning effect, avoiding the troublesome secondary cleaning required by the operator. At the same time, the second brush 804 is a long brush that can penetrate into the chip removal groove of the drill bit 2.

[0025] Working principle: The slider 303 of the connecting ring 302 slides into the groove 301, and the position is adjusted and pressed by the sleeve ring 304 threaded to the drill rod 1, thus allowing the cleaning mechanism 3 to be quickly disassembled and assembled. The mutual engagement of the groove 301 and the slider 303 prevents the connecting ring 302 from rotating with the drill rod 1, thereby preventing the sleeve ring 304 from loosening. The fixed shell 305 and the through plate 306 at the bottom of the connecting ring 302 form a telescopic structure, and the first brush 309 fixed by the abutment plate 307 adheres to the workpiece. During the drilling process of the drill rod 1 rotating and the drill bit 2 drilling, the fixed shell 305 and the through plate 306 adjust according to the drilling depth, and the first brush 309 pushes out the debris and pushes it outward. To prevent accumulation and potential entry of drill bit 2 into the hole, the extension and retraction of the fixed shell 305 and the through plate 306 are suitable for deep hole machining. The contact plate 307 maintains smooth rotation through the roller 308. The limiting plate 4 prevents the through plate 306 from penetrating the fixed shell 305, and the rubber gasket 5 improves the sealing, thereby forming a piston movement to improve the stability of the sliding process of the through plate 306. The pressure relief hole 6 allows gas to flow without affecting the sliding of the through plate 306. Inside the sleeve 7 that fixes the through plate 306, the spring 801 elastically pushes the through rod 802, allowing the second brush 804 embedded in the pressing plate 803 to adhere to the drill bit 2 to scrape off the adsorbed debris, thus avoiding the troublesome manual secondary cleaning later.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A deep hole drilling internal cooling flat bottom drill, comprising a drill rod (1), characterized in that: The drill bit (2) is fixedly installed at the bottom end of the drill rod (1), and a cleaning mechanism (3) is provided on the outside of the drill rod (1). The cleaning mechanism (3) includes a chute (301), which is formed on the outer wall of the drill rod (1). A connecting ring (302) is slidably connected to one side of the chute (301) on the outer wall of the drill rod (1). A sleeve ring (304) is slidably connected above the connecting ring (302) on the outer wall of the drill rod (1). A slider (303) is fixedly installed on the side of the connecting ring (302) facing the chute (301). A fixed shell (305) is fixedly installed at the bottom end of the connecting ring (302), and a through plate (306) extends through the interior of the fixed shell (305).

2. The internal cooling flat-bottom drill for deep hole machining according to claim 1, characterized in that: A contact plate (307) is fixedly installed at the bottom end of the through plate (306), and a roller (308) is rotatably connected to one side of the contact plate (307). A first brush (309) is embedded on the other side of the contact plate (307).

3. The internal cooling flat-bottom drill for deep hole machining according to claim 1, characterized in that: The sleeve ring (304) is threadedly connected to the drill rod (1), and the sleeve ring (304) is tightly fitted with the connecting ring (302).

4. The internal cooling flat-bottom drill for deep hole machining according to claim 1, characterized in that: A limiting plate (4) is fixedly installed at one end of the through plate (306) that penetrates into the fixed shell (305), and a rubber pad (5) is embedded at the top of the limiting plate (4). A pressure relief hole (6) is provided on the outer wall of the fixed shell (305).

5. The internal cooling flat-bottom drill for deep hole machining according to claim 1, characterized in that: The inner wall of the through plate (306) is fitted with a sleeve (7), and a scraping mechanism (8) is provided inside the sleeve (7).

6. The internal cooling flat-bottom drill for deep hole machining according to claim 5, characterized in that: The scraping mechanism (8) includes a spring (801) which is embedded inside the sleeve (7), and a through rod (802) extends out from inside the sleeve (7).

7. The internal cooling flat bottom drill for deep hole machining according to claim 6, characterized in that: The end of the through rod (802) that protrudes from the sleeve (7) is fixedly installed with a pressing plate (803), and the pressing plate (803) facing the outer wall of the drill bit (2) is fitted with a second brush (804).

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