Helix combination tooth composite sheet drill

Abstract

The utility model discloses a kind of spiral body combination tooth composite piece drill bits, belong to a kind of composite drill structure, including drill bit body, the outer edge of the drill bit body is equipped with axial helical groove, the helical groove is connected with the tooth profile portion of the upper portion of drill bit body;The tooth profile portion has multiple sets of composite teeth, and the arc line distance between adjacent two sets of composite teeth is equal. By setting axial helical groove on the outer edge of drill bit body, spiral water flow can be formed by rotation in drilling, and then it is more beneficial to drain water and discharge slag, and by strengthening the drainage and discharge slag efficiency, both drilling speed and the wear resistance of drill bit can be improved, and by designing spiral tooth according to group, drilling speed and composite piece wear resistance can be further improved.

Description

Technical Field

[0001] This utility model relates to a composite drill bit structure, and more specifically, this utility model mainly relates to a spiral combined tooth composite drill bit. Background Technology

[0002] The use of composite drill bits in the geological drilling industry is increasing, and the types of composite drill bits used for different formations are becoming more refined. For medium-hard formations, existing composite drill bits have a simple structure, basic nozzle design, simple tooth profile, and relatively arbitrary composite chip welding angles. This results in poor cutting performance during drilling, slow drilling speeds, and poor wear resistance in specific formations. Therefore, it is necessary to further research and improve the structure of composite drill bits used in medium-hard formations. Utility Model Content

[0003] One of the objectives of this utility model is to address the aforementioned shortcomings by providing a helical composite tooth drill bit, which aims to solve the technical problems of slow drilling speed, poor wear resistance, and inability to achieve good cutting results in similar drill bits in the prior art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] The present invention provides a helical composite tooth drill bit, comprising a drill bit body, characterized in that: the outer edge of the drill bit body is provided with an axial helical groove, the helical groove being connected to the toothed portion on the upper part of the drill bit body; the toothed portion having multiple sets of composite teeth, and the arc distance between adjacent sets of composite teeth being equal.

[0006] As a preferred embodiment, a further technical solution is that the outer contour of the cross-section of the drill bit body is circular.

[0007] A further technical solution is: each set of composite teeth has two composite teeth, and the two composite teeth are located on the upper part of the drill bit body, staggered from each other radially inside and outside the drill bit body, and are welded to the drill bit body as one piece.

[0008] A further technical solution is that the end of the composite tooth has a deflection angle between it and the central axis of the drill bit body.

[0009] A further technical solution is that the composite teeth are symmetrical on both sides of any horizontal line intersecting the central axis of the drill bit body.

[0010] Compared with the prior art, one of the beneficial effects of this utility model is that by setting an axial spiral groove on the outer edge of the drill bit body, the drill bit can rotate during operation to form a spiral water flow, which is more conducive to drainage and slag removal. Furthermore, by enhancing the drainage and slag removal efficiency, both the drilling speed and the wear resistance of the drill bit can be improved. By designing composite teeth in groups, the drilling speed and the wear resistance of the composite plates can be further improved. At the same time, the spiral combined tooth composite plate drill bit provided by this utility model has a simple structure, can be installed and used on drilling rigs of various specifications, and has a wide range of applications. Attached Figure Description

[0011] Figure 1 This is a structural schematic diagram illustrating one embodiment of the present invention.

[0012] In the diagram, 1 represents the drill bit body, 2 represents the spiral groove, and 3 represents the composite tooth. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] refer to Figure 1 As shown, one embodiment of this utility model is a helical composite tooth drill bit, including a drill bit body 1, the outer edge of which is provided with an axial helical groove 2, as shown in the figure. Figure 1 As shown, the spiral groove 2 is actually an oblique groove on the outer edge of the drill bit body 1. When the drill bit rotates, the aforementioned oblique groove forms a spiral groove. More importantly, the aforementioned spiral groove 2 needs to be connected to the toothed portion on the upper part of the drill bit body 1 so that the drill bit can drain water and remove slag through the spiral groove 2 during operation. At the same time, multiple sets of composite teeth 3 need to be provided on the aforementioned toothed portion, and the arc distance between adjacent sets of composite teeth 3 should be equal. The composite teeth 3 can be composite sheets made of hard special materials and welded to the toothed portion of the drill bit body 1. The material of the aforementioned composite teeth 3 is similar to that of existing drill bits of the same type, and its specific material will not be detailed here. Referring to the structure of existing drill bits of the same type, the outer contour of the cross-section of the drill bit body 1 can be set as a circle to ensure the stability of the drill bit rotation.

[0015] In this embodiment, by setting an axial spiral groove 2 on the outer edge of the drill bit body 1, the drill bit can rotate during operation to form a spiral water flow, which is more conducive to drainage and slag removal. Furthermore, by enhancing the drainage and slag removal efficiency, both the drilling speed and the wear resistance of the drill bit can be improved. By designing composite teeth 3 in groups, the drilling speed and the wear resistance of the composite teeth can be further improved.

[0016] According to another embodiment of the present invention, as... Figure 1As shown, two composite teeth 3 can be designed in each group of composite teeth 3, and the two composite teeth 3 are welded to the drill bit body 1 on the upper part of the drill bit body 1, with the inner and outer sides of the drill bit body 1 being staggered radially. For example, when welding the two composite teeth 3, one composite tooth 3 is recessed 1mm into the drill bit body 1, and the other composite tooth 3 protrudes 1mm outward from the drill bit body 1, thus forming an interlaced weld of one inside and one outside, which can improve the cutting speed of the drill bit on the rock strata during operation. For the same purpose, in this embodiment, a deflection angle can also be set between the end of the aforementioned composite tooth 3 and the central axis of the drill bit body 1, for example, the deflection angle can be designed to be 15 degrees. At the same time, in order to ensure the balance of the drill bit rotation during operation, the aforementioned composite teeth 3 are regularly arranged on the upper part of the drill bit body, specifically, the composite teeth 3 are symmetrical on both sides of any horizontal line intersecting with the central axis of the drill bit body 1.

[0017] refer to Figure 1 As shown, in a preferred embodiment of this invention, the drill bit is mounted on a drilling rig, which drives the drill bit to rotate at high speed. This allows the composite teeth 3 to quickly cut through the medium-hard rock formation, enabling the drill bit to gradually advance. During this process, the waste material generated by the composite teeth 3 cutting through the rock is quickly discharged along the spiral water flow formed within the spiral groove 3, preventing excessive waste material accumulation from affecting the drill bit's rotation. According to the inventors' experiments, the optimized drill bit structure achieved in the above embodiment increases the drilling speed by 2 to 3 times compared to conventional drill bits in the same formation, and improves the drill bit's wear resistance by more than 3 times, thereby saving construction costs and improving overall efficiency.

[0018] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0019] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A spiral composite tooth drill bit, comprising a drill bit body (1), characterized in that: The outer edge of the drill bit body (1) is provided with an axial spiral groove (2), and the spiral groove (2) is connected to the toothed part on the upper part of the drill bit body (1); The toothed portion has multiple sets of composite teeth (3), and the arc distance between two adjacent sets of composite teeth (3) is equal.

2. The helical composite tooth drill bit according to claim 1, characterized in that: The outer contour of the cross-section of the drill bit body (1) is circular.

3. The helical composite tooth drill bit according to claim 1, characterized in that: Each set of composite teeth (3) has two composite teeth (3), and the two composite teeth (3) are located on the upper part of the drill body (1), and are staggered from each other radially inside and outside the drill body (1), and are welded to the drill body (1) as one piece.

4. The helical composite tooth drill bit according to claim 1 or 3, characterized in that: The end of the composite tooth (3) has a deflection angle between it and the central axis of the drill body (1).

5. The helical composite tooth drill bit according to claim 1, characterized in that: The composite teeth (3) are symmetrical on both sides of any horizontal line that intersects the central axis of the drill bit body (1).

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