Drill bit capable of removing chips
By setting the structure of scraper and rotating ring in the cavity of the hollow drill bit, the problem of iron filing residue in the hollow drill bit is solved, and the rapid cleaning of iron filings and the improvement of drilling accuracy is achieved.
Patent Information
- Application Number
- CN202421855535.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-02
AI Technical Summary
It is difficult for existing hollow drill bits to completely discharge the iron filings produced by cutting during processing, resulting in the iron filings remaining inside the drill bit, affecting the accuracy of subsequent drilling.
A chip-removable drill bit is designed. By providing multiple scrapers in the cavity of the hollow drill bit body and connecting it with the rotary ring and the limit ring, the structure of the rotary ring and the scraper can be used to hang and clean the iron chips on the inner wall of the cavity.
It realizes rapid cleaning of iron filings in the cavity, improves the accuracy during subsequent drilling, and extends the service life of the drill bit.
Smart Images
Figure CN222971049U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drills, in particular to a drill bit capable of discharging chips. Background Art
[0002] A chip - discharging drill bit is a drill bit that can effectively discharge the waste or chips generated during machining. The chip - discharging drill bit cuts the workpiece through specific cutting tooth edges and effectively discharges the generated chips or waste during the machining process to ensure the continuity of the machining process and the machining quality. The design focus of this kind of drill bit lies in how to efficiently discharge the waste generated during cutting to prevent it from accumulating in the drill hole, which affects the machining efficiency and the drill bit life.
[0003] A hollow drill bit is a kind of chip - discharging drill bit. During the drilling process of the hollow drill bit, the iron chips cut need to be discharged through the design structure of the drill bit. Although the hollow drill bit has a chip - discharging channel or an internal chip - discharging design, in the actual machining process, due to the influence of various factors such as cutting conditions, workpiece materials, and the use of cutting fluid, the iron chips cannot be completely discharged smoothly and thus remain in the internal cavity of the drill bit. This will affect the subsequent drilling accuracy. Therefore, after the hollow drill bit is used, it is necessary to clean the iron chips remaining in its internal cavity. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the disadvantages existing in the prior art and provide a drill bit capable of discharging chips.
[0005] In order to achieve the above - mentioned purpose, the utility model adopts the following technical solutions:
[0006] A drill bit capable of discharging chips includes a hollow drill bit body. A main shaft is fixedly arranged at the top of the hollow drill bit body. Cavities are vertically penetrated through both the hollow drill bit body and the main shaft, and a plurality of scraping members are rotatably arranged in the cavities. An annular cavity is opened downward from the top of the main shaft, a rotating ring is arranged in the annular cavity, the rotating ring is fixedly connected to the top of each scraping member, and the rotating ring is fixed by bolts.
[0007] In addition, a preferred structure is that a plurality of limiting ring cavities are opened in the cavity, and limiting rings are rotatably arranged in the limiting ring cavities.
[0008] In addition, a preferred structure is that the inner walls of the limiting rings are fixedly connected to the scraping members, and the height of the inner wall of the limiting ring is less than the height of the outer wall.
[0009] In addition, a preferred structure is that the top of the scraping member is fixedly connected to the inner wall of the rotating ring, and the scraping members rotate around the vertical central axis of the rotating ring.
[0010] In addition, a preferred structure is that through holes adapted to the bolts are formed in the rotating ring in a penetrating manner, threaded holes adapted to the bolts are formed at the bottom of the annular cavity, and the bolts all pass through the through holes and are inserted into the threaded holes.
[0011] In addition, a preferred structure is that the height of the rotating ring is less than the height of the annular cavity. When the bolts are located in the threaded holes, the tops of the bolts are located in the annular cavity.
[0012] The beneficial effects of the present utility model are as follows: The hollow drill bit body can discharge chips during drilling. When iron chips enter the cavity during drilling, the rotating ring and the scraping ring are arranged to scrape off the iron chips on the inner wall of the cavity, so that the iron chips in the cavity can be quickly cleaned, thereby improving the accuracy during subsequent drilling. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic structural diagram of a chip-discharging drill bit proposed by the present utility model;
[0014] Figure 2 is Figure 1 the bottom view structural diagram of the hollow drill bit body and the main shaft in
[0015] Figure 3 is Figure 1 the internal structural diagram of the hollow drill bit body and the main shaft in
[0016] Figure 4 is Figure 3 the structural diagram when the rotating ring, the scraping member and the limiting ring in
[0017] Figure 5 is a schematic structural diagram of the rotating ring, the scraping member and the limiting ring of a chip-discharging drill bit proposed by the present utility model.
[0018] In the figure: 1 hollow drill bit body, 11 cavity, 12 limiting ring cavity, 2 main shaft, 21 annular cavity, 3 rotating ring, 31 scraping member, 32 limiting ring, 4 bolt, 41 through hole, 42 threaded hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0020] Refer to Figures 1-5, A chip - discharging drill bit, including a hollow drill bit body 1. A main shaft 2 is fixedly arranged at the top of the hollow drill bit body 1. Cavities 11 are vertically penetrated through both the hollow drill bit body 1 and the main shaft 2, and a plurality of scraping members 31 are rotatably arranged in the cavities 11. A ring - shaped cavity 21 is opened downward at the top of the main shaft 2. A rotating ring 3 is arranged in the ring - shaped cavity 21. The rotating ring 3 is fixedly connected to the top of each scraping member 31, and the rotating ring 3 is fixed by bolts 4.
[0021] The drilling of the workpiece can be achieved through the cutting edge at the bottom of the hollow drill bit body 1. It should be noted that the specific cutting and chip - discharging structures of the hollow drill bit body 1 and the main shaft 2 are both existing technologies that have been publicly available in the current market. They are all common knowledge well - known to those skilled in the art and do not belong to the main technical problems to be solved in this technical solution. Therefore, they will not be elaborated in this utility model.
[0022] Among them, a plurality of limiting ring cavities 12 are opened in the cavity 11, and limiting rings 32 are rotatably arranged in the limiting ring cavities 12. The inner walls of the limiting rings 32 are fixedly connected to the scraping members 31, and the height of the inner wall of the limiting ring 32 is less than the height of the outer wall. Through the arrangement of the limiting rings 32, the scraping members 31 can be supported, thereby improving the strength of the scraping members 31 and ensuring that the scraping members 31 do not displace due to shaking during the rotation of the hollow drill bit body 1. And because the height of the inner wall of the limiting ring 32 is less than the height of the outer wall, this can prevent the limiting rings 32 from falling off the limiting ring cavities 12 during rotation, because the limiting ring cavities 12 are adapted to the limiting rings 32.
[0023] Among them, the top of the scraping member 31 is fixedly connected to the inner wall of the rotating ring 3, and the scraping members 31 all rotate around the vertical central axis of the rotating ring 3.
[0024] Among them, through - holes 41 are correspondingly and adaptively penetrated through the rotating ring 3 for the bolts 4, and threaded holes 42 are correspondingly and adaptively opened at the bottom of the ring - shaped cavity 21 for the bolts 4. The bolts 4 all pass through the through - holes 41 and are inserted into the threaded holes 42. The height of the rotating ring 3 is less than the height of the ring - shaped cavity 21. When the bolts 4 are located in the threaded holes 42, the tops of the bolts 4 are located in the ring - shaped cavity 21. Through the arrangement of the bolts 4, the fixation of the rotating ring 3 can be achieved, so that when the scraping members 31 do not need to rotate, their fixation can be ensured, thus ensuring the normal use of this device.
[0025] In this embodiment, when the user finds that there are iron chips remaining in the cavity 11 after using the hollow drill bit body 1 to drill the workpiece, the hollow drill bit body 1 and the main shaft 2 can be first disassembled from the external machine, and then the iron chips in the internal cavity 11 of the hollow drill bit body 1 can be removed.
[0026] Further, when the user needs to remove the iron filings, only the bolt 4 on the rotating ring 3 needs to be removed, and then the rotating ring 3 can be rotated by fingers, so that the rotating of the scraping member 31 can be realized. By rotating the scraping member 31, the iron filings on the inner wall of the cavity 11 can be scraped off, so that the iron filings in the hollow drill bit body 1 can be cleaned. After the cleaning is completed, only the bolt 4 needs to be inserted into the threaded hole 42 again, so that the fixing of the rotating ring 3 and the scraping member 31 can be realized.
[0027] It should be noted that this device only preliminarily removes the iron filings adsorbed in the cavity 11 and is used when the requirement for drilling accuracy is relatively low usually, aiming to quickly remove the iron filings in the cavity 11 to improve the accuracy in subsequent drilling. If the user needs to deeply clean the iron filings, conventional means still need to be used for cleaning again to ensure higher drilling accuracy of this device.
[0028] In the present utility model, the hollow drill bit body 1 can discharge chips during drilling. When iron filings enter the cavity 11 during drilling, through the arrangement of the rotating ring 3 and the scraping ring 31, the iron filings on the inner wall of the cavity 11 can be scraped off, so that the iron filings in the cavity 11 can be quickly cleaned to improve the accuracy in subsequent drilling.
[0029] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.
Claims
1. A drill bit capable of chip removal, comprising a hollow drill bit body (1), characterized in that: A main shaft (2) is fixedly arranged on the top of the hollow drill body (1), a cavity (11) is vertically penetrated in both the hollow drill body (1) and the main shaft (2), and a plurality of scrapers (31) are rotatably arranged in the cavity (11); An annular cavity (21) is opened downwardly at the top of the main shaft (2), and a rotating ring (3) is arranged in the annular cavity (21). The rotating ring (3) is fixedly connected to the top of the scraper (31), and the rotating ring (3) is fixed by bolts (4).
2. A chip removal drill according to claim 1, characterized in that: A plurality of limiting ring cavities (12) are provided in the cavity (11), and limiting rings (32) are rotatably arranged in the limiting ring cavities (12).
3. A chip removal drill according to claim 2, characterized in that: The inner wall of the limiting ring (32) is fixedly connected to the scraper (31), and the height of the inner wall of the limiting ring (32) is smaller than the height of the outer wall.
4. A chip removal drill according to claim 3, characterized in that: The top of the scraper (31) is fixedly connected to the inner wall of the rotating ring (3), and the scraper (31) rotates around the vertical center axis of the rotating ring (3).
5. A chip removal drill according to claim 1, characterized in that: The rotating ring (3) is provided with a through hole (41) corresponding to the bolt (4), and the bottom of the annular cavity (21) is provided with a threaded hole (42) corresponding to the bolt (4). The bolt (4) passes through the through hole (41) and is inserted into the threaded hole (42).
6. A chip removal drill according to claim 5, characterized in that: The height of the rotating ring (3) is smaller than the height of the annular cavity (21), and when the bolt (4) is located in the threaded hole (42), the top of the bolt (4) is located in the annular cavity (21).