Ceramic drill bit
By designing the cutting trajectory and inclined cutting edge on the ceramic drill bit, the problem that the ceramic drill bit cannot produce plane grooves when moving horizontally, and the cutting effect of the drill bit during horizontal and vertical movement is achieved.
Patent Information
- Application Number
- CN202421542582.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-02
AI Technical Summary
Existing ceramic drill bits cannot produce grooves with flat bottom surfaces when moving sideways.
A ceramic drill bit is designed, with a plurality of cutting tracks spirally arranged on the drill bit, and chip drains are formed between the two cutting tracks, and the extended end of the cutting track forms a cutting edge. The multiple cutting edges are arrayed with the axis of the drill bit as the center of the circumference, and the drill bit is concave inward towards the drill handle direction away from the end surface center of one end of the drill handle, so that the cutting edge is inclined.
It realizes that the drill bit can cut out grooves with the bottom surface as flat when moving horizontally, and can also drill holes when moving longitudinally.
Smart Images
Figure CN222919672U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ceramic drills, and particularly relates to a ceramic drill. Background Art
[0002] The current ceramic drills can only drill holes longitudinally and create openings with different depths, but the current ceramic drills cannot create grooves with a flat bottom when moving horizontally. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a ceramic drill, which overcomes the above defects and can create grooves with a flat bottom when moving horizontally.
[0004] To achieve the above purpose, the solution of the utility model is as follows:
[0005] A ceramic drill includes a drill shank and a drill bit. The drill bit is located at one end of the drill shank. A plurality of cutting tracks are spirally arranged on the drill bit. A chip flute is formed between two cutting tracks. The plurality of cutting tracks extend from the end of the drill bit close to the drill shank to the end of the drill bit far from the drill shank, and cutting edges are formed at the extending ends of the cutting tracks. The plurality of cutting edges are circumferentially arrayed around the axis of the drill bit on the end face of the drill bit far from the drill shank and extend from the center of the end face of the drill bit far from the drill shank to the edge of this end face to cut the material when the drill bit rotates. And the center of the end face of the drill bit far from the drill shank is concave towards the drill shank direction, so that the cutting edges are inclined from the center of this end face to the edge of this end face.
[0006] Further, there are four cutting edges, and the four cutting edges are circumferentially arrayed around the axis of the drill bit.
[0007] Further, a grinding layer is provided at the end of the drill shank far from the drill bit.
[0008] Further, both the drill shank and the drill bit are made of hard ceramic material.
[0009] After adopting the above scheme, the beneficial effect of the utility model is as follows:
[0010] The center of the end face of the drill bit of the utility model is concave towards the drill shank direction, so that the cutting edges are inclined from the center of this end face to the edge of this end face. When the drill bit rotates, it can cut the material downward, enabling the drill bit to drill holes longitudinally. And when the drill bit moves horizontally, it can also cut the uncut material through the edge of the inclined cutting edge, enabling the drill bit to cut out grooves with a flat bottom when moving horizontally. Description of the Drawings
[0011] Figure 1 The three-dimensional view of the utility model;
[0012] Label description: 10, drill shank; 11, abrasive layer; 20, drill bit; 21, cutting track; 22, chip removal groove; 23, cutting edge. Detailed implementation
[0013] The following combines the accompanying drawings and specific embodiments to describe the present utility model in detail.
[0014] As Figure 1 shown, the present utility model provides a ceramic drill bit, including a drill shank 10 and a drill bit 20. Among them, the drill bit 20 is located at one end of the drill shank 10. A plurality of cutting tracks 21 are spirally arranged on the drill bit 20. A chip removal groove 22 is formed between two cutting tracks 21. The plurality of cutting tracks 21 extend from the end of the drill bit 20 close to the drill shank 10 to the end of the drill bit 20 far from the drill shank 10, and cutting edges 23 are formed at the extending ends of the cutting tracks 21. The plurality of cutting edges 23 are circumferentially arrayed on the end face of the drill bit 20 far from the drill shank 10 with the axis of the drill bit 20 as the center, and extend from the center of the end face of the drill bit 20 far from the drill shank 10 to the edge of this end face, so as to cut materials when the drill bit 20 rotates. Moreover, the center of the end face of the drill bit 20 far from the drill shank 10 is concave towards the drill shank 10, so that the cutting edges 23 are inclined from the center of this end face to the edge of this end face;
[0015] Specifically, both the drill shank 10 and the drill bit 20 are made of hard ceramic material. The drill bit 20 made of hard ceramic material has high hardness, high strength and good anti-wear ability, and can operate in environments such as high temperature and high pressure;
[0016] Specifically, the center of the end face of the drill bit 20 of the present utility model is concave towards the drill shank 10, so that the cutting edges 23 are inclined from the center of this end face to the edge of this end face. When the drill bit 20 rotates, it can cut down materials downward, enabling the drill bit 20 to drill longitudinally. And when the drill bit 20 moves horizontally, it can also cut the uncut materials through the edge of the inclined cutting edge 23, so that the drill bit 20 can cut out a groove with a flat bottom when moving horizontally.
[0017] Preferably, there are four cutting edges 23. The four cutting edges 23 are circumferentially arrayed with the axis of the drill bit 20 as the center to improve the efficiency of cutting materials; specifically, the cutting edges 23 are formed at the extending ends of the cutting tracks 21. Therefore, there are also four cutting tracks 21. And a chip removal groove 22 is formed between the four cutting tracks 21. The chip removal groove 22 is used to discharge the material debris along it when the cutting edge 23 cuts materials, preventing the material debris from stacking and avoiding affecting cutting.
[0018] Furthermore, an abrasive layer 11 is provided at the end of the drill shank 10 far from the drill bit 20. The abrasive layer 11 is used to be installed on power devices such as electric drills to prevent the ceramic drill bit 20 from slipping.
[0019] To further illustrate the embodiments, the present utility model provides drawings. These drawings are part of the disclosure of the present utility model, mainly used to illustrate the embodiments, and can be combined with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0020] Meanwhile, the front, rear, left, right and other orientations involved in this embodiment are only for reference of an orientation and do not represent the orientation in actual use. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0021] The above are only the preferred embodiments of the present utility model and do not limit the design of this case. All equivalent changes made according to the key design of this case fall within the protection scope of this case.
Claims
1. A ceramic drill bit, characterized in that: The drill bit includes a drill shank and a drill bit. The drill bit is located at one end of the drill shank. A plurality of cutting tracks are spirally arranged on the drill bit. A chip removal groove is formed between the two cutting tracks. The plurality of cutting tracks extend from an end of the drill bit close to the drill shank to an end of the drill bit away from the drill shank, and a cutting edge is formed at the extended end of the cutting track. The plurality of cutting edges are arranged in a circular array on an end face of the drill bit away from the drill shank with the axis of the drill bit as the center, and extend from the center of the end face of the drill bit away from the drill shank to the edge of the end face, so as to cut materials when the drill bit rotates. The center of the end face of the drill bit away from the drill shank is concave toward the drill shank, so that the cutting edge is inclined from the center of the end face to the edge of the end face.
2. A ceramic drill bit as claimed in claim 1, characterized in that: There are four cutting blades, which are arranged in a circular array with the axis of the drill bit as the center.
3. A ceramic drill bit as claimed in claim 1, characterized in that: An end of the drill shank away from the drill bit is provided with a frosted layer.
4. A ceramic drill bit as claimed in claim 1, characterized in that: The drill shank and the drill bit are both made of hard ceramic material.