Saw blade and cutting apparatus

Abstract

The application provides a saw blade and a cutting device, which comprise a tool head and a base body connected with the tool head. The base body is provided with a mounting hole used for being connected with a driving device and a plurality of annular heat dissipation structures. The annular heat dissipation structures are arranged around the mounting hole and are arranged in a radial direction of the base body. Each annular heat dissipation structure is provided with a plurality of heat dissipation holes penetrating through two sides of the thickness direction of the base body. The plurality of heat dissipation holes in the same group of annular heat dissipation structures are arranged in a spaced manner around the mounting hole. The cross section of the heat dissipation hole is hexagonal, and the adjacent heat dissipation holes in the adjacent annular heat dissipation structures are arranged in a staggered manner. The saw blade can improve the heat dissipation efficiency, the structural stability and the cutting precision by arranging the hexagonal heat dissipation holes in a plurality of annular arrays on the base body and arranging the adjacent annular heat dissipation holes in a staggered manner.

Description

Technical Field

[0001] This application relates to the field of cutting tool technology, and more particularly to a saw blade and cutting equipment. Background Technology

[0002] During continuous cutting operations, traditional saw blades generate a significant amount of heat due to friction between the blade body and the workpiece. Because the saw blade itself has limited thermal conductivity, this heat tends to accumulate in localized areas, leading to a substantial increase in the overall temperature of the saw blade. This increased temperature reduces the rigidity of the saw blade body, consequently affecting the stability and precision of the cutting process. Furthermore, prolonged operation at high temperatures accelerates material fatigue and shortens the saw blade's lifespan.

[0003] To improve heat dissipation, existing technologies typically incorporate heat dissipation structures such as grooves and holes on saw blades. However, due to limitations in the overall structural strength and dynamic balance requirements of the saw blade, the size and total area of ​​these grooves and holes are often relatively small, resulting in insufficient actual heat dissipation capacity under continuous, high-load cutting conditions. Therefore, there is an urgent need for a saw blade structure that can effectively balance the requirements of overall structural strength and heat dissipation performance. Utility Model Content

[0004] This application provides a saw blade and a cutting device to solve the problems existing in the related technology. The technical solution is as follows:

[0005] In a first aspect, embodiments of this application provide a saw blade, comprising:

[0006] Blade tip; and

[0007] The base body is connected to the cutter head. The base body has mounting holes and multiple heat dissipation structures. The mounting holes are used to connect to the drive device. The heat dissipation structures are arranged around the mounting holes. The multiple heat dissipation structures are arranged at intervals along the radial direction of the base body. Each ring of the heat dissipation structure is provided with multiple heat dissipation holes. The heat dissipation holes penetrate through both sides of the thickness direction of the base body. Multiple heat dissipation holes in the same group of heat dissipation structures are arranged at intervals around the mounting holes. The cross-section of the heat dissipation holes is hexagonal. Adjacent heat dissipation holes in adjacent heat dissipation structures are staggered.

[0008] In one embodiment, the ratio of the total area of ​​all the heat dissipation holes to the surface area of ​​the substrate is 40%-50%.

[0009] In one embodiment, the hexagon is a regular hexagon.

[0010] In one embodiment, adjacent heat dissipation holes in adjacent heat dissipation structures are arranged at an angle of 60°-120° to each other.

[0011] In one embodiment, the distance between adjacent heat dissipation holes in each ring of the heat dissipation structure is d1, where 5mm ≤ d1 ≤ 10mm.

[0012] In one embodiment, the distance between adjacent heat dissipation holes in adjacent heat dissipation structures is d2, where 5mm≤d2≤10mm.

[0013] In one embodiment, the number of heat dissipation structures is three.

[0014] In one embodiment, the substrate is made of 65Mn or 75Cr1 steel plate.

[0015] In one embodiment, the cutting tip is made of cemented carbide.

[0016] In one embodiment, the cutting head is connected to the substrate by brazing.

[0017] In one embodiment, the thickness of the cutting head is 0.15-0.30 mm thicker than the thickness of the substrate.

[0018] Secondly, embodiments of this application provide a cutting device, including:

[0019] Drive unit; and

[0020] The saw blade described above has a mounting hole connected to the output shaft of the drive device, and the saw blade can rotate with the output shaft of the drive device.

[0021] The advantages or beneficial effects of the above technical solutions include at least the following:

[0022] The saw blade of this invention improves heat dissipation efficiency, structural stability and cutting accuracy by setting multiple ring arrays of hexagonal heat dissipation holes on the base and using a staggered arrangement of adjacent ring heat dissipation holes. The multi-ring array structure allows the heat dissipation structure to cover a large area of ​​the substrate, enabling uniform heat dissipation. Furthermore, the hexagonal cross-section of the heat dissipation holes, compared to traditional circular holes or simple slots, provides a longer perimeter for the same opening area. This results in a longer contact boundary between the holes and the substrate, increasing the heat exchange area between the hole walls and the air, improving the heat dissipation efficiency of a single hole, and ultimately enhancing the overall heat dissipation efficiency of the saw blade. Additionally, the hexagonal shape is a high-strength, high-efficiency closely spaced structure found in nature. Using hexagonal heat dissipation holes reduces weight while maximizing the overall rigidity and deformation resistance of the substrate, ensuring structural stability and cutting accuracy during continuous cutting. Moreover, the staggered arrangement of adjacent heat dissipation holes in adjacent heat dissipation structures avoids the formation of continuous weak structures in the radial direction of the substrate. This ensures higher structural stability and improved cutting accuracy during continuous cutting, while maintaining the overall structural strength and dynamic balance of the substrate.

[0023] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0024] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0025] Figure 1 This is a three-dimensional structural diagram of the saw blade of this utility model;

[0026] Figure 2 This is a partial structural diagram of the base and the cutting head according to the first embodiment of the present invention;

[0027] Figure 3 This is a partial structural diagram of the base and the cutting head according to the second embodiment of the present invention;

[0028] Figure 4 This is a partial structural diagram of the base and the cutting head according to the third embodiment of the present invention;

[0029] Figure 5This is a partial structural diagram of the base and the cutting head according to the fourth embodiment of the present invention.

[0030] Figure Labels

[0031] 1. Cutting head; 2. Base; 21. Mounting hole; 22. Heat dissipation structure; 221. Heat dissipation hole. Detailed Implementation

[0032] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0033] See Figures 1-5 This invention illustrates a preferred embodiment of a saw blade, comprising:

[0034] Blade 1; and

[0035] The base 2 is connected to the cutter head 1. The base 2 has a mounting hole 21 and a multi-ring heat dissipation structure 22. The mounting hole 21 is used to connect to the drive device. The heat dissipation structure 22 is arranged around the mounting hole 21. The multi-ring heat dissipation structure 22 is arranged at intervals along the radial direction of the base 2. Each ring of heat dissipation structure 22 is provided with multiple heat dissipation holes 221. The heat dissipation holes 221 penetrate through both sides of the thickness direction of the base 2. The multiple heat dissipation holes 221 in the same group of heat dissipation structures 22 are arranged at intervals around the mounting hole 21. The cross-section of the heat dissipation hole 221 is hexagonal. Adjacent heat dissipation holes 221 in adjacent heat dissipation structures 22 are staggered.

[0036] The saw blade of this invention improves heat dissipation efficiency, structural stability, and cutting accuracy by setting multiple rings of hexagonal heat dissipation holes 221 on the base 2 and adopting a staggered arrangement of adjacent rings of heat dissipation holes 221. The multi-ring array structure allows the heat dissipation structure 22 to cover a large area of ​​the base 2, enabling uniform heat dissipation. Furthermore, because the cross-section of the heat dissipation holes 221 is hexagonal, compared to traditional circular holes or simple slots, the hexagonal holes 221 have a longer perimeter for the same opening area. This results in a longer contact boundary between the heat dissipation holes 221 and the base 2, thereby increasing the heat exchange area between the wall of the heat dissipation holes 221 and the air, improving the heat dissipation efficiency of a single heat dissipation hole 221, and ultimately improving the overall heat dissipation efficiency of the saw blade. In addition, because the hexagon is self-contained... The high-strength, high-efficiency close-packed structure in nature, with hexagonal heat dissipation holes 221, can reduce weight while maintaining the overall rigidity and deformation resistance of the base 2 to the greatest extent. This ensures that the saw blade can maintain structural stability and cut accuracy during continuous cutting. In addition, the staggered arrangement of adjacent heat dissipation holes 221 in adjacent heat dissipation structures 22 can avoid the formation of continuous weak structures in the radial direction of the base 2. This ensures that the saw blade can maintain higher structural stability and improve cutting accuracy during continuous cutting while ensuring the overall structural strength and dynamic balance of the base 2.

[0037] In addition, the staggered array of heat dissipation holes 221 disrupts the straight path of airflow. When the saw blade rotates, it can more effectively agitate and guide the airflow through the substrate 2, forming more complex turbulence, thereby improving the overall convective heat transfer efficiency. At the same time, the heat conduction path is also evenly distributed, avoiding local heat accumulation.

[0038] In addition, the aforementioned substrate 2 structure provides a larger heat dissipation area while effectively removing excess material. The weight of substrate 2 is reduced by 25%-30% compared to solid saw blades of the same specification, achieving a lightweight design for the saw blade. The lightweight saw blade can reduce rotational inertia, thereby indirectly reducing heat generation and effectively improving the response speed of the cutting equipment. It is also compatible with the battery life requirements of lithium battery cutting equipment, extending the working time by more than 30% under the same power consumption.

[0039] See Figure 1 In one embodiment, the ratio of the total area of ​​all heat dissipation holes 221 to the surface area of ​​the substrate 2 is 40%-50%, which ensures that the overall structural strength of the substrate 2 is maintained within the optimal range while maximizing the heat dissipation area, thereby further improving heat dissipation efficiency.

[0040] See Figure 1 In one embodiment, the number of heat dissipation structures 22 is three sets, so that the base 2 has a maximum heat dissipation area, while maintaining good structural strength so that the saw blade can effectively resist deformation.

[0041] In one embodiment, the hexagon is a regular hexagon, that is, the cross-section of the heat dissipation hole 221 is a regular hexagon. Since the regular hexagon has the highest symmetry and geometric regularity among all hexagons, the stress distribution of the substrate 22 reaches the most uniform state, which can eliminate local stress concentration to the greatest extent, thereby enabling the substrate 2 to have higher structural strength, and ultimately enabling the saw blade to have higher structural stability.

[0042] In one embodiment, adjacent heat dissipation holes 221 in adjacent heat dissipation structures 22 are arranged at an angle of 60°-120° to form a strong triangular support structure, thereby strengthening the rigidity of the substrate 2 and further improving cutting accuracy and cutting life. In addition, the staggered array of heat dissipation holes 221 disrupts the straight path of airflow, which can more effectively agitate and guide the airflow through the substrate 2 when the saw blade rotates, forming more complex turbulence and thus improving the overall convective heat transfer efficiency. At the same time, the heat conduction path is also uniformly distributed, avoiding local heat accumulation.

[0043] See Figure 1 In one embodiment, the distance between adjacent heat dissipation holes 221 in each heat dissipation structure 22 is d1, 5mm≤d1≤10mm, to enhance the structural strength of the base 2, thereby making the overall structure of the saw blade more stable.

[0044] See Figure 1 In one embodiment, the distance between adjacent heat dissipation holes 221 in adjacent heat dissipation structures 22 is d2, 5mm≤d2≤10mm, to enhance the structural strength of the base 2, thereby making the overall structure of the saw blade more stable.

[0045] In one embodiment, the substrate 2 is made of 65Mn or 75Cr1 steel plate to enhance the structural strength of the substrate 2, thereby making the overall structural stability of the saw blade higher.

[0046] In one embodiment, the heat dissipation hole 221 is formed by laser precision cutting, and the diameter of the hexagonal heat dissipation hole 221 tangent to its inner circle is Φ10~Φ16mm.

[0047] In one embodiment, the cutting head 1 is made of cemented carbide to give it better structural strength and ensure that it can stably cut the object to be cut.

[0048] In one embodiment, the cutting head 1 is connected to the substrate 2 by brazing to increase the connection stability between the cutting head 1 and the substrate 2 and prevent the cutting head 1 from disconnecting from the substrate 2.

[0049] See Figures 2-5In one embodiment, the thickness of the cutting head 1 is 0.15-0.30 mm thicker than the thickness of the substrate 2 to form a protective layer, ensuring that the cutting head 1 can stably cut the object to be cut.

[0050] Taking a 254X1.9 / 1.5X25.4X50T saw blade cutting a 6mm thick steel plate as an example, the temperature of the base body 2 of a traditional saw blade will rise to 58-65℃ during continuous dry cutting. However, the saw blade base body 2 with hexagonal heat dissipation holes 221, under the synergistic effect of ventilation and cooling by the hexagonal heat dissipation holes 221 and heat transfer blocked by the hexagonal heat dissipation holes 221, will not continue to rise when the temperature of the base body 2 reaches 40-45℃. The cooling effect is more obvious than that of traditional saw blades. Therefore, it can maintain the rigidity of the saw blade under the same conditions and improve the cutting life.

[0051] The saw blade of this invention is suitable for cutting materials that are difficult to process and that heat up quickly, such as steel, stainless steel, and aluminum alloy.

[0052] A preferred embodiment of this utility model also provides a cutting device, comprising:

[0053] Drive unit (not shown in the figure); and

[0054] The saw blade described above has a mounting hole 21 that is connected to the output shaft of the drive device, allowing the saw blade to rotate with the output shaft of the drive device.

[0055] The cutting device of this utility model, by employing the aforementioned saw blade, also improves heat dissipation efficiency, structural stability, and cutting accuracy by setting multiple ring-shaped hexagonal heat dissipation holes 221 on the base 2 and using a staggered arrangement of adjacent ring-shaped heat dissipation holes 221. The multi-ring-shaped array structure allows the heat dissipation structure 22 to cover a large area of ​​the base 2, enabling uniform heat dissipation. Furthermore, because the cross-section of the heat dissipation holes 221 is hexagonal, compared to traditional circular holes or simple slots, the hexagonal heat dissipation holes 221 have a longer perimeter for the same opening area. This results in a longer contact boundary between the heat dissipation holes 221 and the base 2, thereby increasing the heat exchange area between the wall of the heat dissipation hole 221 and the air, improving the heat dissipation efficiency of a single heat dissipation hole 221, and ultimately improving the overall heat dissipation efficiency of the saw blade. In addition, because the hexagon is self-contained... The high-strength, high-efficiency close-packed structure in nature, with hexagonal heat dissipation holes 221, can reduce weight while maintaining the overall rigidity and deformation resistance of the base 2 to the greatest extent. This ensures that the saw blade can maintain structural stability and cut accuracy during continuous cutting. In addition, the staggered arrangement of adjacent heat dissipation holes 221 in adjacent heat dissipation structures 22 can avoid the formation of continuous weak structures in the radial direction of the base 2. This ensures that the saw blade can maintain higher structural stability and improve cutting accuracy during continuous cutting while ensuring the overall structural strength and dynamic balance of the base 2.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A saw blade, characterized in that, include: Blade tip; as well as The base body is connected to the cutter head. The base body has mounting holes and multiple heat dissipation structures. The mounting holes are used to connect to the drive device. The heat dissipation structures are arranged around the mounting holes. The multiple heat dissipation structures are arranged at intervals along the radial direction of the base body. Each ring of the heat dissipation structure is provided with multiple heat dissipation holes. The heat dissipation holes penetrate through both sides of the thickness direction of the base body. Multiple heat dissipation holes in the same group of heat dissipation structures are arranged at intervals around the mounting holes. The cross-section of the heat dissipation holes is hexagonal. Adjacent heat dissipation holes in adjacent heat dissipation structures are staggered.

2. The saw blade according to claim 1, characterized in that, The ratio of the total area of ​​all the heat dissipation holes to the surface area of ​​the substrate is 40%-50%.

3. The saw blade according to claim 1, characterized in that, The hexagon is a regular hexagon.

4. The saw blade according to claim 3, characterized in that, The adjacent heat dissipation holes in the adjacent heat dissipation structures are arranged at an angle of 60°-120° to each other.

5. The saw blade according to claim 1, characterized in that, The distance between adjacent heat dissipation holes in each ring of the heat dissipation structure is d1, where 5mm≤d1≤10mm.

6. The saw blade according to claim 1, characterized in that, The distance between adjacent heat dissipation holes in the adjacent heat dissipation structures is d2, where 5mm≤d2≤10mm.

7. The saw blade according to claim 1, characterized in that, The substrate is made of 65Mn or 75Cr1 steel plate.

8. The saw blade according to claim 1, characterized in that, The cutting head is made of cemented carbide.

9. The saw blade according to claim 1, characterized in that, The cutting head is connected to the substrate by brazing.

10. A cutting device, characterized in that, include: Drive unit; as well as The saw blade according to any one of claims 1-9, wherein the mounting hole of the saw blade is connected to the output shaft of the drive device, and the saw blade can rotate with the output shaft of the drive device.

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