A light-weight hole saw with chip groove structure

Abstract

The utility model relates to a kind of lightweight hole saw with chip removal groove structure, belong to the technical field of hole cutter, including cylinder, the bottom of cylinder is equipped with the assembly stem that extends downward and is connected with cylinder, the top of cylinder upper surface is equipped with grinding end, the grinding end extends to the inner wall and outer circle of cylinder, all grinding end is composed of diamond single crystal, the cylinder upper end is equipped with chip removal groove, the chip removal groove is continuously or interval distribution with different length, the chip removal groove and grinding end are point or line continuous distribution, to ensure that it can effectively chip removal while grinding. Through the chip removal groove design with different length, and specific angle and distribution, effectively solve the problem that diamond hole saw is difficult to discharge chip in grinding process, easy to block, while cooperating with heat dissipation hole and lightweight cylinder design, improve processing efficiency and tool service life.

Description

Technical Field

[0001] This utility model relates to the field of hole saw technology, specifically to a lightweight hole saw with a chip removal groove structure. Background Technology

[0002] Diamond drilling saws are widely used in construction, stone processing, and municipal engineering, primarily for drilling or core extraction of hard and brittle materials such as concrete, reinforced concrete, brick walls, ceramics, and glass. Traditional diamond drilling saws typically consist of a steel cylinder and diamond cutting heads sintered or brazed to the ends of the cylinder. During operation, the cylinder rotates, and the diamond abrasive grains at the ends grind and cut the material.

[0003] During grinding, a large amount of powdery debris (such as concrete powder) is generated. Traditional hole saws often rely solely on the limited gap between the cutter heads for chip removal, or have a simple chip removal groove design with unreasonable angles. This causes chips to easily accumulate at the bottom of the borehole or inside the barrel, resulting in blockage of the chip removal channel. Once blocked, it not only increases drilling resistance and makes feeding difficult, but also prevents the diamond abrasive from effectively contacting the workpiece, thus significantly reducing cutting efficiency.

[0004] If chip removal is not timely, the accumulated chips will absorb a large amount of cutting heat, causing a sharp increase in the local temperature of the drill bit. High temperature will accelerate the thermal wear and graphitization of diamond abrasive grains, and may also cause the bond matrix to soften prematurely or lose its holding power, thus severely shortening the service life of the hole saw.

[0005] To ensure the rigidity of the barrel to resist the torque during drilling, traditional barrels are typically designed to be quite thick, or retain excessive metal material in uncut areas. This results in a relatively heavy overall weight for the hole saw (not lightweight). When using handheld tools such as electric drills for vertical drilling or working at heights, the heavy drill bit increases the worker's workload, the risk of drilling deviation, and reduces machining accuracy.

[0006] Existing diamond hole saws use a method of bonding the entire diamond surface to cover the machine body. During use, the friction of the entire surface causes the diamond hole saw to overheat, resulting in poor chip removal, long drilling time, short lifespan, and breakage of the drilled object. Summary of the Invention

[0007] This utility model mainly addresses the shortcomings of existing technologies by providing a lightweight drilling saw with a chip removal groove structure. Through the design of chip removal grooves of varying lengths, as well as specific angles and distributions, it effectively solves the problem of chip removal difficulties and easy clogging during the grinding process of diamond drilling saws. At the same time, combined with the heat dissipation holes and lightweight cylinder design, it improves processing efficiency and tool life.

[0008] The above-mentioned technical problems of this utility model are mainly solved by the following technical solutions: A lightweight perforating saw with a chip removal groove structure includes a cylinder. The bottom of the cylinder is provided with an assembly rod that extends downward and communicates with the cylinder. The top of the cylinder is provided with a grinding end that extends to the inner wall and outer circle of the cylinder. The grinding end is composed of diamond single crystals. The upper end of the cylinder is provided with a chip removal groove that is distributed continuously or intermittently with varying lengths. The chip removal groove and the grinding end are distributed continuously in a point or line manner.

[0009] The cylinder body has a grinding end at its top end, which extends to the inner wall and outer circumference of the cylinder body; specifically, the grinding end is located at the top end of the cylinder body, the outer side of the cylinder body has a grinding end, and the inner side of the top end of the cylinder body has a grinding end. All grinding ends are composed of diamond single crystals, connected in the form of dots or lines, protruding from the surface of the cylinder body, and the intervals between them form chip removal grooves. The chip removal grooves ensure effective chip removal during grinding.

[0010] Preferably, the chip removal groove includes short chip removal grooves and long chip removal grooves, with at least one short chip removal groove between the long chip removal grooves, and the multiple short chip removal grooves are distributed in varying lengths or in equal lengths. The short chip removal grooves can also be distributed in a structure that gradually shortens or gradually lengthens.

[0011] Preferably, the chip removal grooves are distributed at right angles or at an inclined angle, the long chip removal grooves can extend downwards to the lower end of the cylinder, and the bottom of the chip removal grooves are distributed in an open or closed shape.

[0012] Preferably, the inclination angle of the chip removal groove is -45° to 45°.

[0013] Preferably, the chip removal grooves are continuously distributed in a linear pattern, or at least one grinding point is continuously distributed.

[0014] Preferably, the long chip removal grooves are provided with chip removal holes. The chip removal holes are rhomboid or elliptical in shape, etc.

[0015] Preferably, the cylinder body is provided with a plurality of symmetrically distributed heat dissipation holes. The shape of the heat dissipation holes can be circular, square, rectangular, oval, honeycomb, polygonal, or irregular.

[0016] Preferably, the assembly rod has a pair of symmetrically distributed clamping grooves on its outer circumference, and the assembly rod has a threaded hole that communicates with the cylinder.

[0017] The assembly rod has a threaded center at the tail or a clamping groove at the tail for connecting to a machine connector.

[0018] This invention can achieve the following effects: This utility model provides a lightweight hole saw with a chip removal groove structure. Compared with the prior art, it is combined with the machine body surface in the form of strip protrusions to increase the chip removal space, change continuous grinding into intermittent grinding to improve the drilling speed, reduce the drilling force, and increase the drilling life.

[0019] Effective chip removal: Through chip removal grooves of varying lengths and at specific angles, as well as auxiliary chip removal holes, the chips generated during grinding can be quickly removed, preventing blockage.

[0020] Excellent heat dissipation: Symmetrical heat dissipation holes and lightweight barrel design help reduce operating temperature and protect diamond abrasive.

[0021] Flexible connection: The assembly rod offers multiple connection methods such as center thread, side clamping groove, and tail clamping groove, making it highly versatile.

[0022] Grinding stability: Diamond single crystals cover the inner and outer circles and the top, and the point / line distribution of chip removal grooves ensures the continuity and stability of cutting. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This is a front view structural diagram of this utility model.

[0025] Figure 3 This is a schematic diagram of the structure of this utility model.

[0026] Figure 4 This is a schematic diagram of the structure of this utility model with chip removal holes.

[0027] Figure 5 This is a partial enlarged view of the chip removal groove of this utility model.

[0028] Figure 6 This is a schematic diagram of the extended structure of the long chip removal groove of this utility model.

[0029] Figure 7 This is a schematic diagram of the composition of the grinding points of this utility model.

[0030] In the diagram: 1. Grinding end; 2. Chip removal groove; 3. Cylinder; 4. Assembly rod; 5. Clamping groove; 6. Heat dissipation hole; 7. Short chip removal groove; 8. Long chip removal groove; 9. Threaded hole; 10. Chip removal hole; 11. Grinding point. Detailed Implementation

[0031] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0032] Example: Figure 1-7As shown, a lightweight perforating saw with a chip removal groove structure includes a cylinder 3 and a diamond component bonded to the cylinder 3. The cylinder 3 has four symmetrically distributed heat dissipation holes 6. At the bottom of the cylinder 3, there is a downward-extending assembly rod 4 connected to the cylinder 3. The assembly rod 4 has a threaded center at its tail or a clamping groove at its tail for connecting a machine connector. The outer circumference of the assembly rod 4 has a pair of symmetrically distributed clamping grooves 5. The assembly rod 4 has a threaded hole 9 connected to the cylinder 3. At the top of the cylinder 3, there is a grinding end 1 extending to the inner wall and outer circumference of the cylinder 3. The grinding end 1 is composed entirely of single-crystal diamond. At the top of the cylinder 3, there is a chip removal groove 2, which is distributed continuously or intermittently at varying lengths. The chip removal grooves 2 are continuously distributed with the grinding end 1 at points or lines. The chip removal grooves 2 are continuously distributed in a line, or at least one grinding point is continuously distributed. The chip removal groove 2 includes short chip removal grooves 7 and long chip removal grooves 8. At least one short chip removal groove 7 is provided between the long chip removal grooves 8. The short chip removal grooves 7 are distributed in varying lengths or in equal proportions. The chip removal grooves 2 are distributed at right angles or inclined angles, with the outer chip removal grooves 2 having an inclination angle of -45° to 45°. The top chip removal grooves 2 also have an inclination angle of -45° to 45°. The long chip removal grooves 8 can extend downwards to the lower end of the cylinder 3, and their bottom ends are either open or closed. Chip removal holes 10 are provided between the long chip removal grooves 8.

[0033] In summary, this lightweight hole saw with chip removal groove structure is integrated into the machine body surface in the form of strip protrusions, which increases the chip removal space, changes continuous grinding into intermittent grinding, thereby increasing the drilling speed, reducing the drilling force, and increasing the drilling life.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] In summary, the above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A lightweight perforating saw with a chip removal groove structure, comprising a cylinder (3), wherein the bottom of the cylinder (3) is provided with an assembly rod (4) extending downward and communicating with the cylinder (3), and the top of the cylinder (3) is provided with a grinding end (1), wherein the grinding end (1) extends to the inner wall and outer circle of the cylinder (3), and wherein the grinding end (1) is composed of diamond single crystals, characterized in that: The upper end of the cylinder (3) is provided with chip removal groove (2), the chip removal groove (2) is distributed in a continuous or intermittent manner with varying lengths, and the chip removal groove (2) is distributed continuously with the grinding end (1) in a point or line manner.

2. The lightweight perforating saw with a chip removal groove structure according to claim 1, characterized in that: The chip removal groove (2) includes a short chip removal groove (7) and a long chip removal groove (8). At least one short chip removal groove (7) is provided between the long chip removal grooves (8). The multiple short chip removal grooves (7) are distributed in different lengths or in equal lengths.

3. A lightweight perforating saw with a chip removal groove structure according to claim 2, characterized in that: The chip removal groove (2) is distributed at a right angle or an inclined angle, the long chip removal groove (8) can extend downward to the lower end of the cylinder (3), and the bottom end of the chip removal groove (2) is distributed in an open or closed shape.

4. A lightweight perforating saw with a chip removal groove structure according to claim 3, characterized in that: The inclination angle of the chip removal groove (2) is -45° to 45°.

5. A lightweight perforating saw with a chip removal groove structure according to claim 1, 2, or 3, characterized in that: The chip removal grooves (2) are distributed in a continuous linear pattern, or at least one grinding point is continuously distributed.

6. A lightweight perforating saw with a chip removal groove structure according to claim 2 or 3, characterized in that: The long chip removal groove (8) is provided with chip removal holes (10).

7. A lightweight perforating saw with a chip removal groove structure according to claim 1, characterized in that: The cylindrical body (3) is provided with several heat dissipation holes (6) that are symmetrically distributed.

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