Anti-fracture drill bit
By setting bearings, columns and threaded columns on the drill bit to fix the connection of the bearing and the drilling mechanism, the problem of the drill bit shaking when the hardness is high or the shape of the workpiece is irregular, improving the stability of the drill bit and reducing the risk of breakage.
Patent Information
- Application Number
- CN202421862298.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-02
AI Technical Summary
Existing drill bits are prone to shake when working with workpieces with high hardness or irregular shapes, resulting in vibration and deflection, increasing the risk of wear and may lead to cracks and breakage.
A fracture-proof drill bit is designed, and the stability of the drill bit is improved by providing bearings, columns and threaded columns on the drill bit to fix the bearings and drilling mechanism.
Through the arrangement of the bearing, the shaking phenomenon of the drill bit during drilling is reduced, the stability of the drill bit is improved, and the probability of breaking is reduced.
Smart Images
Figure CN222904523U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drill bits, in particular to a drill bit that prevents breakage. Background Art
[0002] A drill bit is a tool widely used in the fields of construction, manufacturing, and maintenance, mainly for drilling holes in various hard materials. The drill bit is driven to rotate by the torque force provided by a drilling machine or other equipment, and the cutting edge or tooth surface contacts the material to be drilled, thereby cutting the material.
[0003] The material and shape of the workpiece will affect the stability of the drill bit. For example, when processing workpieces with higher hardness or irregular shapes, the drill bit is prone to impact and vibration, resulting in wobbling. The wobbling of the drill bit will cause vibration and deflection, which will accelerate the wear of the drill bit, especially at the edge part in contact with the workpiece. Long-term vibration and deflection will cause stress concentration on the drill bit, eventually leading to cracks and even breakage. Content of the Utility Model
[0004] The purpose of the utility model is to solve the disadvantages existing in the prior art, and to propose a drill bit that prevents breakage.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A drill bit that prevents breakage, including a drill bit and a drilling mechanism. A main shaft is fixedly arranged at the top of the drill bit, and the drill bit is installed on the drilling mechanism through the main shaft. A bearing is sleeved below the main shaft on the drill bit; connecting plates are fixedly arranged on both sides of the bearing, columns are movably arranged at the ends of the connecting plates, threaded columns are fixedly arranged at the tops of the columns, and the columns are connected to the drilling mechanism through the threaded columns.
[0007] In addition, the preferred structure is that limiting rings are sleeved on both the upper and lower sides of the bearing on the drill bit, and the limiting rings are fixedly connected to the drill bit.
[0008] In addition, the preferred structure is that connecting plates are vertically and fixedly arranged outward on both sides of the bearing, and vertical through holes are opened at the ends of the connecting plates.
[0009] In addition, the preferred structure is that columns are movably arranged up and down in the through holes, anti-detachment parts are fixedly sleeved on both the upper and lower sides of the columns, and the diameter of the anti-detachment parts is larger than the diameter of the through holes.
[0010] In addition, the preferred structure is that the threaded columns are fixedly arranged at the tops of the columns, and the centers of the columns and the threaded columns are located on the same vertical central axis.
[0011] In addition, the preferred structure is that nuts are sleeved on the threaded columns, and the nuts are adapted to the threaded columns.
[0012] The beneficial effects of the present utility model are as follows: Through the arrangement of the upright post and the threaded post, the bearing can be fixedly connected to the drilling mechanism. Through the arrangement of the bearing, the stability of the drill bit during drilling can be improved, so as to reduce the phenomenon of the drill bit shaking during drilling, thereby realizing the protection of the drill bit and reducing the probability of the drill bit breaking. Description of the Drawings
[0013] Figure 1 It is a schematic structural diagram of a drill bit for preventing breakage proposed by the present utility model;
[0014] Figure 2 It is a schematic structural diagram of the drill bit, bearing and upright post of a drill bit for preventing breakage proposed by the present utility model;
[0015] Figure 3 is Figure 2 the explosion schematic diagram in
[0016] Figure 4 It is a schematic structural diagram of the drill bit of a drill bit for preventing breakage proposed by the present utility model;
[0017] Figure 5 It is a schematic structural diagram of the bearing of a drill bit for preventing breakage proposed by the present utility model;
[0018] Figure 6 It is a schematic structural diagram of the upright post of a drill bit for preventing breakage proposed by the present utility model.
[0019] In the figure: 1 drill bit, 11 limit ring, 12 main shaft, 2 drilling mechanism, 3 bearing, 31 connecting plate, 32 through hole, 4 upright post, 41 threaded post, 42 nut, 43 anti-detachment part. Detailed Embodiment
[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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.
[0021] Referring to Figures 1-6 , a drill bit for preventing breakage includes a drill bit 1 and a drilling mechanism 2. A main shaft 12 is fixedly arranged at the top of the drill bit 1. The drill bit 1 is installed on the drilling mechanism 2 through the main shaft 12, and a bearing 3 is sleeved below the main shaft 12 on the drill bit 1. Connecting plates 31 are fixedly arranged on both sides of the bearing 3, upright posts 4 are movably arranged at the ends of the connecting plates 31, threaded posts 41 are fixedly arranged at the tops of the upright posts 4, and the upright posts 4 are connected to the drilling mechanism 2 through the threaded posts 41.
[0022] Among them, the main shaft 12 on the drill bit 1 is inserted into the drilling mechanism 2 and connected to the drive shaft inside it, so that the drilling mechanism 2 can drive the drill bit 1. It should be noted that the specific structures and working methods of the drill bit 1, the main shaft 12, and the drilling mechanism 2 are all existing technologies that have been publicly available on the market at present. They all belong to the 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.
[0023] Among them, limiting rings 11 are sleeved on both the upper and lower sides of the bearing 3 on the drill bit 1, and the limiting rings 11 are fixedly connected to the drill bit 1. Through the arrangement of the limiting rings 11, stable installation of the bearing 3 can be achieved.
[0024] Among them, connecting plates 31 are vertically and fixedly arranged outward on both sides of the bearing 3, and through holes 32 in the vertical direction are opened at the ends of the connecting plates 31. Columns 4 are movably arranged up and down in the through holes 32. Anti-detachment members 43 are fixedly sleeved on both the upper and lower sides of the columns 4, and the diameter of the anti-detachment members 43 is larger than the diameter of the through holes 32. Through the arrangement of the connecting plates 31, connection between the bearing 3 and the columns 4 can be achieved. Through the arrangement of the anti-detachment members 43, the columns 4 can be prevented from falling off through the through holes 32.
[0025] Among them, a threaded column 41 is fixedly arranged at the top of the column 4, and the centers of the column 4 and the threaded column 41 are both located on the same vertical central axis. Nuts 42 are sleeved on the threaded columns 41, and the nuts 42 are adapted to the threaded columns 41. Threaded holes are correspondingly and adaptively opened on the drilling mechanism 2 for the threaded columns 41. Workers can insert the threaded columns 41 into the threaded holes to achieve fixed connection between the columns 4 and the bearing 3. And nuts 42 are also arranged on the threaded columns 41. When the threaded columns 41 are inserted into the threaded holes, the nuts 42 on the threaded columns 41 can also be rotated to the outside of the threaded holes, so as to improve the clamping effect between the threaded columns 41 and the threaded holes and improve the stability when fixing the columns 4 and the bearing 3.
[0026] In this embodiment, when workers need to use this drill bit 1, they only need to connect the main shaft 12 on the drill bit 1 to the output shaft on the drilling mechanism 2. The specific connection method is an existing technology, so it will not be elaborated.
[0027] Subsequently, workers can align the columns 4 on the connecting plates 31 on both sides of the bearing 3 with the threaded holes on the drilling mechanism 2, then push the columns 4 upward so that the threaded columns 41 at the tops of the columns 4 contact the threaded holes. Subsequently, only by rotating the columns 4 can the threaded columns 41 be rotated and inserted into the threaded holes. Finally, the nuts 42 are also rotated to the outside of the threaded holes to improve the installation effect of the threaded columns 41. When the threaded columns 41 on both sides are inserted into the threaded holes, the fixing of the bearing 3 can be achieved.
[0028] Furthermore, through the arrangement of the bearing 3, the stability of the drill bit 1 can be improved during drilling, so as to reduce the phenomenon of the drill bit 1 shaking during drilling, thereby protecting the drill bit 1 and reducing the probability of the drill bit 1 breaking. It should be noted that the outer side of the bearing 3 is fixedly arranged, and the inner side rotates synchronously with the drill bit 1. This is the prior art, so it will not be elaborated here.
[0029] In the present utility model, through the arrangement of the column 4 and the threaded column 41, the bearing 3 can be fixedly connected to the drilling mechanism 2. Through the arrangement of the bearing 3, the stability of the drill bit 1 during drilling can be improved, so as to reduce the phenomenon of the drill bit 1 shaking during drilling, thereby realizing the protection of the drill bit 1 and reducing the probability of the drill bit 1 breaking.
[0030] The above is only a 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 and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.
Claims
1. A fracture-resistant drill bit, comprising a drill bit (1) and a drilling mechanism (2), characterized in that: A main shaft (12) is fixedly arranged on the top of the drill bit (1), the drill bit (1) is installed on the drilling mechanism (2) through the main shaft (12), and a bearing (3) is sleeved on the drill bit (1) below the main shaft (12); Connecting plates (31) are fixedly provided on both sides of the bearing (3), columns (4) are movably provided at the ends of the connecting plates (31), threaded columns (41) are fixedly provided at the tops of the columns (4), and the columns (4) are connected to the drilling mechanism (2) via the threaded columns (41).
2. The anti-fracture drill bit according to claim 1, characterized in that: The drill bit (1) is sleeved with limiting rings (11) on both the upper and lower sides of the bearing (3), and the limiting rings (11) are fixedly connected to the drill bit (1).
3. The anti-fracture drill bit according to claim 1, characterized in that: Connecting plates (31) are fixedly arranged vertically outward on both sides of the bearing (3), and vertical through holes (32) are provided at the ends of the connecting plates (31).
4. The anti-fracture drill bit according to claim 3, characterized in that: A column (4) is movably arranged in the through hole (32) at the upper and lower sides, and an anti-dropping piece (43) is fixedly sleeved on the upper and lower sides of the column (4), and the diameter of the anti-dropping piece (43) is larger than the diameter of the through hole (32).
5. The anti-fracture drill bit according to claim 4, characterized in that: The threaded column (41) is fixedly arranged on the top of the column (4), and the centers of the column (4) and the threaded column (41) are both located on the same vertical central axis.
6. The anti-fracture drill bit according to claim 5, characterized in that: The threaded columns (41) are sleeved with nuts (42), and the nuts (42) are adapted to the threaded columns (41).