Diamond drill bit for reaming and repairing holes

Abstract

The utility model discloses a diamond drill bit for reaming and repairing holes, which comprises a connecting rod, and the lower end of the connecting rod is fixed with a base; a sliding groove is formed in the lower end face of the base, drilling teeth are clamped in the sliding groove in a sliding mode, and three sets of drilling teeth are arranged. A first screw rod is arranged on the upper end face of the base in a penetrating mode, the first screw rod and the base form threaded connection, the lower portion of the first screw rod penetrates into the first connecting hole, the first screw rod and the first connecting hole form threaded connection, and meanwhile the first connecting hole is formed in the upper end face of the drill tooth. According to the diamond drill bit for reaming and repairing the hole, the effect of conveniently replacing the broken or abraded drill teeth is achieved, the diamond drill bit is simple and convenient, meanwhile, cost is saved, resources are saved, when one diamond substrate is damaged, the diamond substrate can be independently replaced, and the practicability of the diamond drill bit is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diamond drill bits, in particular to a diamond drill bit used for hole enlarging and hole repairing. Background Art

[0002] Diamond drill bits are generally used for drilling and cutting of hard materials. During operation, the entire drill bit rotates at high speed driven by an external power component to achieve the effect of expanding and repairing holes. For example, in the patent number "CN220517194U" and the patent name "An electroplated diamond drill bit", it includes a drill body, the lower end of the drill body is provided with a connecting thread, the upper end of the drill body is evenly fixed with a plurality of first blade wings, each first blade wing is fixed with a plurality of first cutting teeth, a diamond layer is welded on the cutting surface of the first blade wing, a plurality of mounting grooves are evenly opened on the cutting surface, auxiliary teeth are fixed in the mounting grooves, and a plurality of second blade wings are evenly provided at the upper end of the drill body at the inner side of the first blade wing, and the second blade wing is fixed with second cutting teeth. However, the above structure still has the following problems in actual use:

[0003] In the above structure, the blade and the drill body are fixed by welding. Since the drill bit may wear or break during the hole expansion and repair process, the entire drill bit needs to be replaced when the blade is worn or broken, which increases the cost and wastes resources, making it very inconvenient to use.

[0004] Therefore, we proposed that the diamond drill bit used for hole expansion and repair can solve the above problems well. Utility Model Content

[0005] The purpose of the utility model is to provide a diamond drill bit for hole expansion and hole repairing, so as to solve the problem raised by the above-mentioned background technology that the drill bit in the current market may wear or break during the hole expansion and hole repairing process, and when the blade is broken and worn, the entire drill bit needs to be replaced, which increases the cost and causes a waste of resources.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a diamond drill bit for hole expansion and repairing, comprising a connecting rod, the lower end of which is fixed to a base;

[0007] The invention also includes: a slide groove is provided on the lower end surface of the base, and drill teeth are slidably engaged inside the slide groove, and the drill teeth are provided in three groups;

[0008] A first screw is disposed through the upper end surface of the base, and a threaded connection is formed between the first screw and the base, and the lower end of the first screw passes through the first connecting hole, and the first screw and the first connecting hole are threadedly connected, and the first connecting hole is opened on the upper end surface of the drill tooth.

[0009] Preferably, the drill teeth are arranged in a "T"-shaped structure, and the three groups of drill teeth are distributed in a triangular structure.

[0010] Preferably, the upper end of the connecting rod is fixedly mounted on a mounting seat, and the mounting seat is connected to an external power component.

[0011] Preferably, one side of the lower end surface of the drill tooth is arranged in an inclined structure, and a diamond substrate is arranged on the inclined surface of the lower end surface of the drill tooth, and the diamond substrate is plugged into the drill tooth through a connecting rod.

[0012] Preferably, the diamond substrate and the connecting rod are fixedly connected, and three groups of diamond substrates and connecting rods are provided, and each group is provided with three diamond substrates, and a limiting groove is provided on the outer side of one end of the connecting rod.

[0013] Preferably, a limiting block is engaged inside the limiting groove, and the limiting block is arranged inside the drill tooth, and the limiting block and the drill tooth are fixedly connected.

[0014] Preferably, a second connecting hole is formed at one end of the connecting rod away from the diamond substrate, and a second screw is threadedly connected to the inner surface of the second connecting hole, and the other end of the second screw passes through the drill tooth, and a threaded connection is formed between the second screw and the drill tooth.

[0015] Compared with the prior art, the beneficial effects of the utility model are: the diamond drill bit for hole expansion and repairing can not only achieve the effect of facilitating the replacement of broken or worn drill teeth, but also save costs and resources at the same time, and when one of the diamond substrates is damaged, it can be replaced separately, which greatly improves the practicality of the diamond drill bit. The specific contents are as follows:

[0016] (1) By inserting the drill teeth into the slide groove, the drill teeth are engaged once, and then the first screw is screwed into the first connecting hole again, so that the drill teeth are limited and fixed, thereby facilitating the replacement of broken or worn drill teeth. This is simple and convenient, and also saves costs and resources.

[0017] Furthermore, the first screw is rotated out of the first connecting hole, so that the first screw no longer limits the drill tooth. At this time, the drill tooth can be removed separately by sliding the drill tooth outward to make the drill tooth slide out of the slide groove.

[0018] The external power assembly drives the connecting rod to rotate at high speed, so that the connecting rod drives the base to rotate together, and the base drives the drill teeth to rotate together, so that the drill teeth can achieve the effect of expanding and repairing holes;

[0019] (2) By rotating the second screw rod, one end of the second screw rod is separated from the second connecting hole, thereby releasing the limit on the connecting rod, and each group of diamond substrate shells can be disassembled separately. When one of the diamond substrates is damaged, it can be replaced separately, which greatly improves the practicality of the diamond drill bit;

[0020] The second screw is rotated back into the second connecting hole to achieve the limiting fixation of the connecting rod, thereby completing the installation and replacement of the connecting rod and the diamond substrate, and each set of second screws is hidden and will not affect its normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0022] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0023] Figure 3 This is a schematic diagram of the bottom view of the connection structure between the base and the drill teeth of the utility model;

[0024] Figure 4 This is a schematic diagram of the front section structure of the connection between the base and the drill teeth of the utility model;

[0025] Figure 5 For this utility model Figure 4 The enlarged structural diagram at B in the middle;

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the diamond substrate and the connecting rod connected to the utility model.

[0027] In the figure: 1. connecting rod; 2. base; 3. slide groove; 4. drill tooth; 5. first screw; 6. first connecting hole; 7. diamond substrate; 8. connecting rod; 9. limit groove; 10. limit block; 11. second connecting hole; 12. second screw. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 6 , the utility model provides the following technical solutions:

[0030] Embodiment 1: In order to solve the problem in the prior art that the drill bit may wear or break during the process of hole expansion and repair, and when the blade is broken and worn, the entire drill bit needs to be replaced, which increases the cost and wastes resources, the following scheme is disclosed, including a connecting rod 1, the lower end of which is fixed to a base 2; further comprising: a slide groove 3 is provided on the lower end surface of the base 2, and a drill tooth 4 is slidably engaged inside the slide groove 3, and the drill tooth 4 is provided with three groups; a first screw rod 5 is provided through the upper end surface of the base 2, and a threaded connection is formed between the first screw rod 5 and the base 2, and the lower end of the first screw rod 5 is passed through the first connecting hole 6, and the first screw rod 5 and the first connecting hole 6 are threadedly connected, and the first connecting hole 6 is provided on the upper end surface of the drill tooth 4, the drill tooth 4 is arranged in a "T" shape, and the three groups of drill teeth 4 are distributed in a triangular structure, the upper end of the connecting rod 1 is fixedly installed with a mounting seat, and the mounting seat is connected to an external power component;

[0031] First, the diamond drill bit is composed of a connecting rod 1, a base 2 and a drill tooth 4. The connecting rod 1 is driven to rotate at a high speed by an external power component, so that the connecting rod 1 drives the base 2 to rotate together, and then the base 2 drives the drill tooth 4 to rotate together, so that the drill tooth 4 can achieve the effect of expanding the hole and repairing the hole. When the drill tooth 4 is damaged, it is only necessary to rotate the first screw rod 5 out of the first connecting hole 6, so that the first screw rod 5 no longer limits the drill tooth 4. At this time, the drill tooth 4 can be removed separately by sliding the drill tooth 4 out of the slide groove 3, and then a new drill tooth 4 is inserted into the slide groove 3, so as to achieve a heavy engagement of the drill tooth 4, and then the first screw rod 5 is screwed into the first connecting hole 6 again, so as to achieve the effect of limiting and fixing the drill tooth 4, so as to facilitate the replacement of the broken or worn drill tooth 4. While being simple and convenient, it also saves costs and resources.

[0032] Embodiment 2: Different from Embodiment 1, in this embodiment, when one of the diamond substrates 7 is damaged, it can be replaced separately, which greatly improves the practicality of the diamond drill bit. Figure 4-Figure 5 , one side of the lower end surface of the drill tooth 4 is arranged in an inclined structure, and a diamond substrate 7 is arranged on the inclined surface of the lower end surface of the drill tooth 4, and the diamond substrate 7 is plugged with the drill tooth 4 through a connecting rod 8, the diamond substrate 7 and the connecting rod 8 are fixedly connected, and three groups of diamond substrates 7 and connecting rods 8 are arranged, and each group is arranged with three, and a limiting groove 9 is arranged on the outer side of one end of the connecting rod 8;

[0033] Moreover, three groups of drill teeth 4 are provided, and three groups of diamond substrates 7 are provided on the lower inclined surface of each group of drill teeth 4. By rotating the second screw rod 12, one end of the second screw rod 12 is separated from the second connecting hole 11, thereby releasing the limit of the connecting rod 8, so that the connecting rod 8 can drive the diamond substrate 7 to be disassembled, and each group of diamond substrates 7 can be disassembled separately. When one of the diamond substrates 7 is damaged, it can be replaced separately, which greatly improves the practicality of the diamond drill bit;

[0034] Embodiment 3: Different from Embodiment 2, this embodiment facilitates the installation and replacement of the connecting rod 8 and the diamond substrate 7. Figure 5-Figure 6 The limiting block 10 is engaged inside the limiting groove 9, and the limiting block 10 is arranged inside the drill tooth 4, and the limiting block 10 is fixedly connected with the drill tooth 4. A second connecting hole 11 is opened at one end of the connecting rod 8 away from the diamond substrate 7, and a second screw rod 12 is threadedly connected inside the second connecting hole 11, and the other end of the second screw rod 12 passes through the drill tooth 4, and a threaded connection is formed between the second screw rod 12 and the drill tooth 4;

[0035] By plugging the connecting rod 8 into the drill tooth 4 and by docking the limiting groove 9 of the connecting rod 8 with the limiting block 10, the connecting rod 8 is limited, so that the connecting rod 8 will not rotate on its own. At the same time, the second screw 12 is rotated back to the second connecting hole 11 to limit and fix the connecting rod 8, thereby completing the installation and replacement of the connecting rod 8 and the diamond substrate 7. Each set of second screws 12 is hidden and will not affect its normal operation.

[0036] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A diamond drill bit for hole expansion and repair, comprising a connecting rod (1), the lower end of the connecting rod (1) being fixed to a base (2); It is characterized in that Also includes: The lower end surface of the base (2) is provided with a slide groove (3), and a drill tooth (4) is slidably engaged inside the slide groove (3), and the drill tooth (4) is provided in three groups; A first screw rod (5) is provided through the upper end surface of the base (2), and a threaded connection is formed between the first screw rod (5) and the base (2), and the lower end of the first screw rod (5) passes through the first connecting hole (6), and the first screw rod (5) and the first connecting hole (6) are threadedly connected, and the first connecting hole (6) is opened on the upper end surface of the drill tooth (4).

2. A diamond drill bit for hole expansion and repairing according to claim 1, characterized in that: The drill teeth (4) are arranged in a "T"-shaped structure, and the three groups of drill teeth (4) are distributed in a triangular structure.

3. A diamond drill bit for hole expansion and repairing according to claim 1, characterized in that: The upper end of the connecting rod (1) is fixedly mounted on a mounting seat, and the mounting seat is connected to an external power component.

4. A diamond drill bit for hole expansion and repairing according to claim 1, characterized in that: One side of the lower end face of the drill tooth (4) is arranged in an inclined structure, and a diamond substrate (7) is arranged on the inclined surface of the lower end face of the drill tooth (4), and the diamond substrate (7) is plugged into the drill tooth (4) via a connecting rod (8).

5. A diamond drill bit for hole expansion and repairing according to claim 4, characterized in that: The diamond substrate (7) and the connecting rod (8) are fixedly connected, and three groups of diamond substrates (7) and connecting rods (8) are provided, and each group is provided with three diamond substrates. At the same time, a limiting groove (9) is provided on the outer side of one end of the connecting rod (8).

6. A diamond drill bit for hole expansion and repairing according to claim 5, characterized in that: The limiting groove (9) is internally engaged with a limiting block (10), and the limiting block (10) is arranged inside the drill tooth (4), and the limiting block (10) and the drill tooth (4) are fixedly connected.

7. A diamond drill bit for hole expansion and repairing according to claim 5, characterized in that: A second connecting hole (11) is formed at one end of the connecting rod (8) away from the diamond substrate (7), and a second screw rod (12) is threadedly connected to the interior of the second connecting hole (11), and the other end of the second screw rod (12) passes through the drill tooth (4), and a threaded connection is formed between the second screw rod (12) and the drill tooth (4).

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