Hard alloy cross-shaped ceramic drill bit

Abstract

The utility model discloses a hard alloy cross ceramic drill bit which comprises a drill handle, a drill body and a drill bit body, the drill handle, the drill body and the drill bit body are integrally formed, the drill bit body comprises a head body arranged at the front end of the drill body, at least two cutting drill bodies are arranged on the head body, the cutting drill bodies are higher than the front end face of the head body, and the cutting drill bodies are arranged on the front end face of the head body. A drill point part is formed on the front end face of the head body through each cutting drill body, an arc-shaped groove is formed in the front end of each cutting drill body, and a cutting edge is arranged in each arc-shaped groove. By means of the design, the situation that the head is damaged by drilling or groove drilling is reduced, the drilling quality and efficiency are improved, overall scrapping is reduced, resource waste is reduced, cost input is reduced, and the requirement for use is better met.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling tools, in particular to a hard alloy cross ceramic drill bit. Background Art

[0002] Among the known drilling tools, the drill bit is one of the more common tools. Since the drill bit is often used as a tool in a high-speed rotating cutting working environment, a ceramic drill bit has also appeared when drilling. For example, a ceramic drill bit disclosed in a Chinese utility model patent with an authorization announcement number of CN209365054U includes a drill front end portion, a drill shank portion and a drill tail end arranged in sequence, and the drill front end portion has a plurality of arc-shaped blades evenly distributed in the circumferential direction; the drill front end portion is also provided with chip grooves having the same number as the arc-shaped blades and distributed in a spiral symmetrical manner, and the front end openings of each chip groove are respectively located by each In the several sectors separated by the arc-shaped blade, the tail end opening of each chip groove is located on the outer side of the drill shank. It can be seen that the chips generated by the ceramic drill bit during the drilling process will be smoothly discharged through the chip groove without the need for special drill withdrawal and chip removal operations. The drilling quality is good, the drilling efficiency is improved, and the service life of the drill bit is extended. However, since the arc-shaped blade often needs to cut glass, tiles, marble, etc., it is easy to be damaged, which can easily lead to overall scrapping, which not only wastes resources but also increases the cost investment accordingly. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0003] 1. Technical issues that need to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a carbide cross ceramic drill bit, which is designed to reduce damage to the head caused by drilling holes or drilling grooves, improve the quality and efficiency of drilling holes, reduce overall scrap, reduce waste of resources and reduce cost investment, and is more conducive to meeting the requirements of use needs.

[0005] (II) Technical solutions that need to be adopted

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A cemented carbide cross ceramic drill comprises a drill shank, a drill body and a drill bit, wherein the drill shank, the drill body and the drill bit are integrally formed, and the drill bit comprises a head body arranged on the front end of the drill body, and at least two cutting drill bodies are arranged on the head body, wherein the cutting drill bodies are higher than the front end surface of the head body, and a drill tip portion is formed on the front end surface of the head body by each of the cutting drill bodies, and an arc groove is opened at the front end of each of the cutting drill bodies, and a cutting edge is arranged in the arc groove.

[0008] Preferably, the cutting drill body is made of alloy material, and the cutting drill body is welded to the head body.

[0009] Preferably, four cutting drill bodies are used, and the four cutting drill bodies are evenly distributed on the head body.

[0010] Preferably, a groove is provided at the lower portion of each cutting drill body, the groove is arc-shaped, and a cutting chisel edge is provided in the groove.

[0011] Preferably, a rotation track is arranged on the drill body, and a chip removal groove is formed on the drill body between the rotation tracks.

[0012] Preferably, the chip removal groove is provided with heat dissipation holes parallel to the axial direction of the drill body.

[0013] Preferably, the drill shank comprises a shank body arranged at the rear end of the drill body, and a slot is arranged on the shank body.

[0014] Preferably, there are two card slots.

[0015] (III) Technical effects to be achieved

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] Firstly, the drill bit of the utility model comprises a head body arranged on the front end of the drill body, at least two cutting drill bodies are arranged on the head body, the cutting drill bodies are higher than the front end face of the head body, and a drill tip is formed on the front end face of the head body by each cutting drill body, an arc groove is opened at the front end of each cutting drill body, a cutting edge is arranged in the arc groove, and the design reduces the damage to the head caused by drilling or drilling grooves, improves the quality and efficiency of drilling, reduces overall scrapping, reduces the waste of resources and reduces the cost investment, and is more conducive to meeting the requirements of use needs.

[0018] Secondly, the cutting drill body of the utility model is made of alloy material, and the cutting drill body is welded on the head body, so the structure is more solid and the service life is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model.

[0020] Figure 2 This is a schematic diagram of the drill body and drill bit structure of the utility model.

[0021] Figure 3 This is a schematic diagram of the drill bit structure of the utility model.

[0022] Figure 4 It is a schematic diagram of the drill body structure of the utility model.

[0023] In the figure: 1, drill shank; 2, drill body; 3, drill bit; 11, shank body; 12, slot; 21, rotation track; 22, chip groove; 23, heat dissipation hole; 31, head body; 32, drill body; 33, drill tip; 34, arc groove; 35, groove. DETAILED DESCRIPTION

[0024] In the description of the present utility model, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] In the description of the present utility model, it should be noted that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0028] Example 1: See Figure 1 , Figure 2 and Figure 3 A cemented carbide cross ceramic drill comprises a drill shank 1, a drill body 2 and a drill bit 3. The drill shank 1, the drill body 2 and the drill bit 3 are integrally formed. The drill bit 3 comprises a head body 31 arranged on the front end of the drill body 2. At least two cutting drill bodies 32 are arranged on the head body 31. The cutting drill bodies 32 are higher than the front end surface of the head body 31, and a drill tip 33 is formed on the front end surface of the head body 31 by each cutting drill body 32. The front end of each cutting drill body 32 is provided with an arc groove 34, and a cutting edge is arranged in the arc groove 34. This arrangement is conducive to positioning through the drill tip 33, and can quickly drill holes or grooves. More importantly, the arc groove 34 can reduce resistance. Since the cutting edge in the arc groove 34 can better cut, the cutting efficiency of drilling holes or grooves is improved, which can better meet the use requirements. The drill shank 1, the drill body 2 and the head body 31 are made of ceramic material.

[0029] Embodiment 2: It can be explained on the basis of embodiment 1, such as Figure 1 , Figure 2 and Figure 3 As shown, the cutting drill body 32 is made of alloy material, and the cutting drill body 32 is welded on the head body 31, which greatly improves the firmness of the structure. At the same time, the cutting drill body 32 made of alloy material is more conducive to cutting glass, tiles, marble, etc., and the durability is improved, which reduces the overall scrapping of the drill bit 3 due to damage, and reduces the waste of resources and cost investment. It is worth noting that the cutting drill body 32 uses four, and the four cutting drill bodies 32 are evenly distributed on the head body 31 at intervals, so that the front ends of the four cutting drill bodies 32 are cross-shaped, which is conducive to better positioning. This arrangement is reasonable and more conducive to drilling or drilling grooves. It is worth noting that the front end of the cutting drill body 32 (that is, the cutting edge, four cutting edges are used in this embodiment) is cut by four different angles and arc cutting edges. Its function is that cutting at different angles will reduce friction and reduce heat generation, and it also forms the key role of micro-rotation and key gradual cutting. When the drill bit is used at 3 / 4, four cutting edges will cut at the same time to ensure that the hole size is accurate and the hole wall is smooth.

[0030] Among them, it is also worth noting that in order to improve the efficiency during the cutting process, a groove 35 is provided at the bottom of each cutting drill body 32, and the groove 35 is in an arc shape, which is conducive to reducing the resistance during the operation process. A cutting transverse edge is provided in the groove 35, which not only reduces the resistance of drilling or drilling grooves, but also helps to improve the cutting efficiency of drilling or drilling grooves, and can better meet the use requirements. Finally, it is also worth noting that the arc-shaped groove 35 is also formed with a cutting edge, and in this embodiment, the cutting edge is a semicircular cutting edge with a radius of R0.5 and R1, which can play a good role in heat dissipation, dust removal and main rotary cutting, etc. It will appear at different positions of the four cutting drill bodies 32, making the utility model more time-saving and labor-saving during use, which is also the uniqueness of the utility model.

[0031] Embodiment 3: It can be described on the basis of Embodiment 1 or Embodiment 2, such as Figure 1 and Figure 4 As shown, the drill body 2 is provided with a rotation track 21, and a chip removal groove 22 is formed on the drill body 2 between the rotation tracks 21, which is not only conducive to cutting deep grooves or deep holes, but also conducive to chip removal. In order to improve the heat dissipation effect, a heat dissipation hole 23 parallel to the axial direction of the drill body 2 is provided on the chip removal groove 22, which is more conducive to improving the service life.

[0032] Embodiment 4: It can be described on the basis of Embodiment 1, Embodiment 2 or Embodiment 3, such as Figure 1 As shown, the drill handle 1 includes a handle body 11 arranged at the rear end of the drill body 2. The handle body 11 is provided with a clamping groove 12. In this embodiment, there are two clamping grooves 12, which makes the clamping more secure when cooperating with external equipment.

[0033] It should be noted that although the above embodiments have been described in this article, this does not limit the scope of patent protection of the utility model. Therefore, based on the innovative concept of the utility model, changes and modifications to the embodiments described in this article, or equivalent structural or equivalent process changes made using the contents of the utility model specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the utility model patent.

Claims

1. A cemented carbide cross ceramic drill bit, comprising a drill shank (1), a drill body (2) and a drill bit (3), wherein the drill shank (1), the drill body (2) and the drill bit (3) are integrally formed, and characterized in that: The drill bit (3) comprises a head body (31) arranged on the front end of the drill body (2), at least two cutting drill bodies (32) are arranged on the head body (31), the cutting drill bodies (32) are higher than the front end surface of the head body (31), and a drill tip (33) is formed on the front end surface of the head body (31) by each of the cutting drill bodies (32), and an arc groove (34) is opened at the front end of each of the cutting drill bodies (32), and a cutting edge is arranged in the arc groove (34).

2. The cemented carbide cross ceramic drill bit according to claim 1, characterized in that: The cutting drill body (32) is made of alloy material, and the cutting drill body (32) is welded to the head body (31).

3. The cemented carbide cross ceramic drill bit according to claim 1 or 2, characterized in that: The cutting drill bodies (32) are four in number, and the four cutting drill bodies (32) are evenly distributed on the head body (31) at intervals.

4. The cemented carbide cross ceramic drill bit according to claim 1 or 2, characterized in that: A groove (35) is provided at the lower part of each cutting drill body (32), the groove (35) is in an arc shape, and a cutting chisel edge is provided in the groove (35).

5. The cemented carbide cross ceramic drill bit according to claim 1 or 2, characterized in that: The drill body (2) is provided with a rotation track (21), and a chip removal groove (22) is formed on the drill body (2) between the rotation tracks (21).

6. The cemented carbide cross ceramic drill bit according to claim 5, characterized in that: The chip removal groove (22) is provided with a heat dissipation hole (23) parallel to the axial direction of the drill body (2).

7. The cemented carbide cross ceramic drill bit according to claim 1 or 2, characterized in that: The drill shank (1) comprises a shank body (11) arranged at the rear end of the drill body (2), and a clamping groove (12) is arranged on the shank body (11).

8. The cemented carbide cross ceramic drill bit according to claim 7, characterized in that: There are two card slots (12).

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