Diamond hole opener

Abstract

The utility model discloses a diamond trepanning device, including the cylinder, the fixed in the bottom of cylinder's circumferential distribution's diamond contact block and the fixed installation in the center place of cylinder top's positioning shaft, the circumferential side wall of cylinder is equipped with a plurality of through -arranged chip removal port, the inner wall of cylinder is fixedly connected with the baffle, the baffle and the inner top wall of cylinder form the liquid storage cavity, the top of chip removal port is equipped with the flow guide opening of liquid storage cavity intercommunication, the flow guide opening one side fixedly connected with the flow guide sleeve in the inside of cylinder. In the utility model, the inside of liquid storage cavity has liquid, because the centrifugal force of high -speed rotation, the sealing plug is separated with the liquid inlet, cooling water passes through the flow guide sleeve, the flow guide opening, the gap and discharges, flows down along the inner wall of cylinder, and the inside of cylinder and diamond contact block is cooled down, and therefore is cooled down from the inside and outside two sides, and the effect is better, thereby improves the service life of this trepanning device.

Description

Technical Field

[0001] This utility model relates to the technical field of diamond drilling equipment, specifically a diamond drilling tool. Background Technology

[0002] A diamond hole saw is a commonly used hole-making tool, often used to make holes in hard materials such as glass, ceramics, stone, and tiles. Its working principle relies on the cutting action of diamond particles to complete the hole-making process.

[0003] When a diamond hole saw is in operation, the drill bit rubs intensely against the material being processed (such as ceramic tiles, stone, etc.), generating a large amount of heat. High temperatures accelerate diamond wear, reduce drill bit strength, and may even cause diamond particles to fall off. Spraying cooling water can effectively remove heat and extend the lifespan of the hole saw.

[0004] However, the cooling water is often sprayed only on the outer surface of the diamond hole opener, and the amount of cooling water accumulated on the inner surface is small. The inner surface is not cooled enough, the bonding strength between the diamond particles and the matrix (metal binder) decreases, and the particles break due to thermal stress or fall off from the main body, resulting in a sharp decline in the cutting ability of the hole opener. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a diamond hole opener, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a diamond hole opener, comprising a cylindrical body, diamond contact blocks arranged in a circular pattern fixed to the bottom of the cylindrical body, and a positioning shaft fixedly installed at the center of the top of the cylindrical body. Multiple through-hole chip discharge ports are provided on the circumferential sidewall of the cylindrical body. A partition is fixedly connected to the inner wall of the cylindrical body, forming a liquid storage cavity between the partition and the top wall of the cylindrical body. A guide port communicating with the liquid storage cavity is provided at the top of each chip discharge port. A guide sleeve is fixedly connected to one side of the guide port located inside the cylindrical body. One end of the guide sleeve is a liquid inlet, and the other end is a liquid outlet, with the liquid outlet communicating with the guide port.

[0009] Preferably, the guide sleeve is provided with a sealing component for sealing the liquid inlet. The sealing component includes a support block that is slidably disposed inside the guide sleeve. One end of the support block is fixedly connected to a spring, which is fixed to the inner wall of the guide sleeve. The other end of the support block is fixedly connected to a sealing plug, which is used to seal the liquid inlet. The support block is provided with a seepage port that communicates with the guide sleeve.

[0010] Preferably, the bottom end of the guide port is provided with a notch, which is located on the inner side of the cylinder.

[0011] Preferably, the top of the cylinder has circumferentially distributed through holes, which are connected to the liquid storage chamber.

[0012] Preferably, the through hole is either a round hole or a rectangular hole.

[0013] Preferably, the partition is arranged parallel to the inner top wall of the cylinder, and the partition has a disc-shaped structure.

[0014] (III) Beneficial Effects

[0015] This utility model provides a diamond hole opener, which has the following beneficial effects:

[0016] 1. In this utility model, the hole opener needs to be installed on an electric drill for use. When the hole opener rotates at high speed, high temperatures are generated between the diamond contact block, the cylinder and the material. Cooling is carried out on the outside by spraying cooling water. At the same time, water is sprayed into the through hole so that there is liquid inside the liquid storage chamber. Due to the centrifugal force generated by high-speed rotation, the sealing plug separates from the liquid inlet. At this time, the cooling water is discharged through the guide sleeve, guide port and notch, and flows down along the inner wall of the cylinder to cool the inside of the cylinder and the diamond contact block. Therefore, cooling is carried out from both the inside and outside, which has a better effect and avoids the diamond particles from cracking or falling off the cylinder due to thermal stress. This solves the problem of the hole opener's cutting ability decreasing sharply, thereby improving the service life of the hole opener.

[0017] 2. In this utility model, the chip discharge port helps to discharge waste chips, avoids the accumulation of chips on the inner surface of the hole opener, and the waste chips can be cooled down after contacting the cooling water. Attached Figure Description

[0018] Figure 1 This is a front-view perspective view of a diamond hole opener proposed in this utility model.

[0019] Figure 2 for Figure 1 Cross-sectional structural diagram;

[0020] Figure 3 for Figure 1 A diagram of the structure viewed from below;

[0021] Figure 4 for Figure 2 Enlarged structural diagram at point A;

[0022] Figure 5 for Figure 3 Enlarged structural diagram at point B;

[0023] Figure 6This is a partial cross-sectional view of a diamond aperture holder proposed in this utility model;

[0024] Figure 7 for Figure 6 External structure diagram.

[0025] In the diagram: 1. Cylinder; 101. Chip discharge port; 102. Flow guide port; 103. Notch; 104. Through hole; 2. Positioning shaft; 3. Diamond contact block; 4. Partition plate; 5. Liquid storage chamber; 6. Flow guide sleeve; 601. Liquid inlet; 602. Liquid outlet; 7. Sealing plug; 8. Support block; 801. Water seepage port; 9. Spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Please see Figures 1 to 3 This utility model provides a technical solution: a diamond hole opener, including a cylindrical body 1, diamond contact blocks 3 fixed to the bottom of the cylindrical body 1 in a circular arrangement, and a positioning shaft 2 fixedly installed at the center of the top of the cylindrical body 1. Multiple through-hole chip discharge ports 101 are provided on the circumferential side wall of the cylindrical body 1. A partition 4 is fixedly connected to the inner wall of the cylindrical body 1, and a liquid storage cavity 5 is formed between the partition 4 and the inner top wall of the cylindrical body 1. A guide port 102 communicating with the liquid storage cavity 5 is provided at the top of the chip discharge port 101. A guide sleeve 6 is fixedly connected to one side of the guide port 102 inside the cylindrical body 1. One end of the guide sleeve 6 is a liquid inlet 601 and the other end is a liquid outlet 602. The liquid outlet 602 is connected to the guide port 102.

[0028] This diamond hole saw needs to be installed on an electric drill for use, that is, the positioning shaft 2 is clamped in the clamping part of the electric drill. This is existing technology and is not the direction of innovation and improvement in this paper, so it will not be described in detail.

[0029] The electric drill drives the hole saw to rotate at high speed, causing the diamond contact block 3 to first contact the material surface. Pressing down on the diamond contact block 3 allows the cylinder 1 to penetrate the material, completing the drilling operation. This process generates a large amount of heat, requiring cooling water spraying. The water is first sprayed onto the outer surfaces of the diamond contact block 3 and the cylinder 1 to cool them. The cooling water then flows out through the guide sleeve 6, guide port 102, and notch 103, flowing downwards along the inner wall of the cylinder 1 to cool the inner sides of the cylinder 1 and the diamond contact block 3. In summary, this hole saw can cool both the inner and outer sides of the cylinder 1 and the diamond contact block 3 during operation, ensuring the hole saw operates at a safe temperature. This prevents diamond particles from cracking due to thermal stress or falling off the cylinder 1, solves the problem of rapid decrease in the hole saw's cutting ability, and extends its service life.

[0030] Reference Figure 4 , Figure 6 and Figure 7 The guide sleeve 6 is provided with a sealing component for sealing the liquid inlet 601. The sealing component includes a support block 8 that is slidably disposed inside the guide sleeve 6. One end of the support block 8 is fixedly connected to a spring 9, which is fixed to the inner wall of the guide sleeve 6. The other end of the support block 8 is fixedly connected to a sealing plug 7, which is used to seal the liquid inlet 601. The support block 8 is provided with a seepage port 801 that communicates with the guide sleeve 6.

[0031] Due to the centrifugal force generated by high-speed rotation, the sealing plug 7 separates from the liquid inlet 601. At this time, the cooling water inside the liquid storage chamber 5 is discharged through the guide sleeve 6, the guide port 102, and the notch 103, and flows down along the inner wall of the cylinder 1 to cool the inner side of the cylinder 1 and the diamond contact block 3. Therefore, cooling from both the inside and outside is more effective, thereby improving the service life of this hole opener.

[0032] When not rotating, the spring 9 pushes the sealing plug 7 to seal the inlet 601 under the elastic force to prevent coolant leakage.

[0033] Reference Figure 5 The bottom end of the guide port 102 is provided with a notch 103, which is located on the inner side of the cylinder 1.

[0034] The cooling water inside the liquid storage chamber 5 passes through the guide sleeve 6 and the guide port 102, and is finally discharged through the notch 103. The notch 103 is located at the lower working part of the cylinder 1 and has an unobstructed design to ensure that the water flow directly impacts the inner surface of the cylinder 1, avoiding the "dead corner" problem of traditional external spraying.

[0035] Reference Figure 1 The top of the cylinder 1 has circumferentially distributed through holes 104, which are connected to the liquid storage chamber 5.

[0036] The through hole 104 can be either a round hole or a rectangular hole, or other similar structures can be used, and is not limited to the above shapes.

[0037] Water is sprayed into the through hole 104, and the cooling water enters the liquid storage chamber 5, so that the liquid storage chamber 5 contains liquid, which prepares for the subsequent cooling water to enter the guide sleeve 6.

[0038] Since the through holes 104 are evenly distributed around the circumference (usually 2-4 holes are provided), cooling water can be evenly injected into the liquid storage chamber 5 and converge in the annular space formed by the partition 4 and the inner top wall of the cylinder 1, which helps to quickly and timely add cooling water.

[0039] Reference Figure 2 The partition 4 is arranged parallel to the inner top wall of the cylinder 1, and the partition 4 has a disc-shaped structure.

[0040] A liquid storage cavity 5 is formed between the partition 4 and the inner top wall of the cylinder 1, which forms a highly uniform annular liquid storage space. When external water is injected through the through holes 104 distributed around the top of the cylinder 1, the liquid can quickly diffuse into the entire annular space.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A diamond hole opener, characterized in that: The device includes a cylinder (1), diamond contact blocks (3) fixed to the bottom of the cylinder (1) and arranged in a circular pattern, and a positioning shaft (2) fixedly installed at the center of the top of the cylinder (1). The cylinder (1) has multiple through-hole chip discharge ports (101) on its circumferential sidewall. The cylinder (1) has a partition plate (4) fixedly connected to its inner wall. The partition plate (4) and the inner top wall of the cylinder (1) form a liquid storage cavity (5). The top of the chip discharge port (101) has a guide port (102) that communicates with the liquid storage cavity (5). The guide port (102) is fixedly connected to a guide sleeve (6) on one side inside the cylinder (1). One end of the guide sleeve (6) is a liquid inlet (601) and the other end is a liquid outlet (602). The liquid outlet (602) communicates with the guide port (102).

2. The diamond hole opener according to claim 1, characterized in that: The guide sleeve (6) is provided with a sealing assembly for sealing the liquid inlet (601). The sealing assembly includes a support block (8) that is slidably disposed inside the guide sleeve (6). One end of the support block (8) is fixedly connected to a spring (9), which is fixed to the inner wall of the guide sleeve (6). The other end of the support block (8) is fixedly connected to a sealing plug (7), which is used to seal the liquid inlet (601). The support block (8) is provided with a seepage port (801) that communicates with the guide sleeve (6).

3. A diamond drilling tool according to claim 1, characterized in that: The bottom end of the flow guide (102) is provided with a notch (103), and the notch (103) is located on the inner side of the cylinder (1).

4. A diamond hole opener according to claim 1, characterized in that: The top of the cylinder (1) is provided with circumferentially distributed through holes (104), which are connected to the liquid storage chamber (5).

5. A diamond hole opener according to claim 4, characterized in that: The through hole (104) is either a round hole or a rectangular hole.

6. A diamond hole opener according to claim 1, characterized in that: The partition (4) is arranged parallel to the inner top wall of the cylinder (1), and the partition (4) has a disc-shaped structure.

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