Circular saw blade

Abstract

The embodiment of the utility model provides a circular saw blade, and belongs to the field of numerical control machining, the circular saw blade comprises a saw blade main body, and a plurality of saw teeth are arranged on the outer contour of the saw blade main body in the circumferential direction; a spiral chip containing groove is formed between every two adjacent sawteeth, and the rotating direction of the spiral chip containing grooves is consistent with the rotating direction of the saw blade body. The first end, away from the saw blade body, of each saw tooth is arranged to be an inverted conical surface. The first ends, away from the saw blade body, of the upper surfaces and the lower surfaces of the sawteeth are provided with cutting edge inclination angles. According to the embodiment of the invention, the inverted conical surfaces of the sawteeth are set to improve the quality yield of formed products; the quality yield and the production efficiency of a formed product are improved through blade inclination angles formed on the upper and lower surfaces of the sawteeth; and the spiral chip accommodating groove consistent with the rotation direction of the saw blade main body is arranged, so that the quality yield of a formed product is improved.

Description

Technical Field

[0001] This application belongs to the field of CNC machining technology, and in particular relates to a circular saw blade. Background Technology

[0002] In CNC machining, circular saw blades are commonly used to process workpiece blanks. During processing, the feed belt carries the workpiece blank to the processing position of the circular saw blade. At the processing position, the circular saw blade processes both sides of the workpiece blank and the feed belt, leaving a portion of the workpiece blank and feed belt unloaded so that the finished product and the remaining workpiece blank are connected and still being carried forward by the feed belt. However, in existing technologies, the saw teeth of circular saw blades are usually set as flat teeth. The sharpness of flat teeth is insufficient, causing burrs to easily form during use. This scratches the cut surface of the finished product, affecting its appearance and flatness. Furthermore, circular saw blades with flat teeth use straight or right-handed chip grooves to discharge chips upwards. The chip grooves have weak chip discharge capacity, causing waste chips to easily adhere to the finished product and the chip grooves. These waste chips cause burrs and scratches on the finished product, further affecting its appearance and flatness. Therefore, using existing circular saw blades for processing cannot meet the design requirements for the appearance and flatness of the molded products, resulting in a decrease in the quality yield and production efficiency of the molded products. Utility Model Content

[0003] The purpose of this application is to provide a circular saw blade that can improve the quality and yield of finished products and increase production efficiency.

[0004] To achieve the above objectives, this application proposes a circular saw blade, comprising: a saw blade body, wherein a plurality of saw teeth are arranged circumferentially on the outer contour of the saw blade body; a spiral chip-collecting groove is provided between two adjacent saw teeth, the spiral direction of the spiral chip-collecting groove being consistent with the rotation direction of the saw blade body; each saw tooth having an inverted conical surface formed at its first end away from the saw blade body; and both the upper and lower surfaces of the saw teeth having a cutting inclination angle at their first ends away from the saw blade body.

[0005] According to some embodiments of this application, the spiral chip-receiving groove has a groove front angle formed near the first end of the saw tooth.

[0006] According to some embodiments of this application, the ratio of the helix angle of the spiral chip-receiving groove to the angle of the groove front angle is set to 11:12.

[0007] According to some embodiments of this application, the inverted conical surface and the vertical surface perpendicular to the saw blade body form an inverted conical angle; the ratio of the inverted conical angle, the blade tilt angle, the helical angle of the spiral chip groove, and the angle of the groove front angle satisfies 5:1:11:12.

[0008] According to some embodiments of this application, each of the blade inclination angles is set to 1°, each of the inverted cone angles is set to 5°, each of the helix angles is set to 11°, and each of the groove front angles is set to 12°.

[0009] According to some embodiments of this application, the saw blade body is provided with a saw blade mounting hole, and the saw blade mounting hole is concentrically arranged with the saw blade body.

[0010] According to some embodiments of this application, the circular saw blade further includes a clamping portion located at the edge of the saw blade mounting hole; the thickness of the clamping portion is greater than the thickness of the saw blade body.

[0011] According to some embodiments of this application, the diameter ratio of the saw blade mounting hole, the clamping part, and the saw blade body is set to 13:20:55.

[0012] According to some embodiments of this application, the circular saw blade is configured as a high-strength carbide saw blade.

[0013] According to some embodiments of this application, the saw blade body and the clamping part are integrally formed.

[0014] According to the above embodiments of this application, at least the following beneficial effects are achieved: Multiple saw teeth are circumferentially arranged on the outer contour of the saw blade body, and a spiral chip-receiving groove is provided between adjacent saw teeth. When the spiral chip-receiving groove rotates in the same direction as the saw blade body, the circular saw blade can more easily discharge chips, reducing the probability of waste chips adhering to the molded product, thereby reducing scratches on the molded product caused by waste chips adhering to it and improving the quality yield of the molded product; simultaneously, an inverted conical surface is formed on the side of each saw tooth away from the first end of the saw blade body, so that when the blank to be processed is conveyed by a conveyor belt, the molded product processed by the saw teeth and the unprocessed product are separated. The connecting section between the processed product blanks is narrower on the side closer to the finished product. This makes it easier for the strip to break off from the narrower section when the finished product is peeled off, further ensuring that the strip does not remain on the finished product. At the same time, by forming a cutting inclination angle at the first end of both the upper and lower surfaces of the saw teeth away from the saw blade body, the cutting inclination angle can reduce the contact area between the saw teeth and the finished product during the cutting process, reduce the cutting resistance of the circular saw blade, improve the sharpness of the saw teeth, reduce the probability of burrs being generated during the use of the circular saw blade, and reduce the scratches caused by burrs on the finished product, thereby improving the quality yield and production efficiency of the finished product. Attached Figure Description

[0015] Figure 1 A schematic diagram of the axial structure of a circular saw blade according to one embodiment of this application;

[0016] Figure 2 This application provides a front view of an embodiment of a circular saw blade;

[0017] Figure 3 This application provides a magnified view of detail A in the main view of an embodiment of a circular saw blade;

[0018] Figure 4 A top view of an embodiment of a circular saw blade is provided for this application;

[0019] Figure 5 This application provides a detailed enlarged view (B) of a top view of an embodiment of a circular saw blade;

[0020] Figure 6 This application provides an embodiment of a circular saw blade along... Figure 2 Side sectional view of AA;

[0021] Figure 7 This application provides a detailed enlarged view (C) of a side sectional view of an embodiment of a circular saw blade;

[0022] Figure 8 This application provides a cross-sectional schematic diagram of a circular saw blade cutting a product blank according to an embodiment.

[0023] Figure label:

[0024] Saw blade body 100, saw teeth 110, blade inclination angle 111, inverted cone angle 113, inverted cone surface 112, spiral chip groove 120, groove front angle 121, spiral angle 122, saw blade mounting hole 130, clamping part 140, connecting section 200, formed product 300, product blank 400. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0026] It should be noted that the terms "length", "width", "height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", and "tail" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "attachment," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] 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 one or more of that feature. Additionally, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0029] Understandably, referring to Figures 1 to 8 As shown, a circular saw blade provided according to an embodiment of this application includes:

[0030] The saw blade body 100 has multiple saw teeth 110 arranged circumferentially on its outer contour; a spiral chip groove 120 is provided between two adjacent saw teeth 110, and the spiral chip groove 120 rotates in the same direction as the rotation of the saw blade body 100; each saw tooth 110 has an inverted conical surface 112 formed at its first end away from the saw blade body 100; the upper and lower surfaces of the saw tooth 110 both have a cutting inclination angle 111 formed at the first end away from the saw blade body 100.

[0031] It is understood that the number of saw teeth 110 is not limited in this application embodiment, and the number of saw teeth 110 can be set according to actual needs. (Refer to...) Figure 1 As shown, multiple saw teeth 110 are evenly spaced and arranged circumferentially on the outer contour of the saw blade body 100.

[0032] This application embodiment does not limit the rotation direction of the saw blade body 100, as shown in the reference. Figure 4 and Figure 5 As shown, the saw blade body 100 is placed vertically. When the saw blade body 100 rotates to the left, the spiral chip groove 120 is set to rotate to the left, and the chip discharge method of the spiral chip groove 120 is downward. Therefore, the rotation direction of the spiral chip groove 120 is consistent with the rotation direction of the saw blade body 100, which can reduce the adhesion of waste chips to the formed product 300 and the spiral chip groove 120, thereby reducing the scratching of the surface of the formed product 300 by the waste chips and improving the quality yield of the formed product 300. The inverted conical surface 112 of this embodiment can improve the quality yield of the formed product 300.

[0033] For example, refer to Figure 5 and Figure 8 As shown, each saw tooth 110 has an inverted conical surface 112 formed at its first end away from the saw blade body 100. Based on this saw tooth 110, the product blank 400 can be cut to obtain the following: Figure 8 The molded product 300, the remaining product blank 400, and the connecting section 200 between the molded product 300 and the remaining product blank 400 (wherein, the material strip carrying the product blank will be processed along with it) are shown. At this time, since the remaining product blank 400 and the molded product 300 are still connected, they can continue to be conveyed through the material strip below the product blank 400. (Refer to...) Figure 8 As shown, since the inverted conical surface 112 makes the connecting section 200 thinner and narrower at the end near the molded product 300, the strip is more likely to break when the molded product 300 is separated from the product blank 400. This reduces the probability that the strip on the connecting section 200 will remain on the molded product 300 after cutting, and reduces the probability that the strip on the connecting section 200 will scratch the surface of the molded product 300, thereby improving the quality yield of the molded product 300.

[0034] The blade inclination angle 111 in this embodiment can reduce the contact area between the upper and lower surfaces of the saw teeth 110 and the formed product 300, reduce the cutting resistance of the circular saw blade, improve the sharpness of the saw teeth 110, reduce the probability of burrs being generated during use, reduce scratches caused by burrs to the formed product 300, and thus improve the quality yield and production efficiency of the formed product 300. For example, refer to... Figure 6 and Figure 7 As shown, the upper and lower surfaces of the serration 110 are inclined so that they both form a cutting angle 111.

[0035] The saw teeth 110 in this embodiment can be configured as hooks. In this case, setting the blade inclination angle on the hook-shaped saw teeth 110 can further reduce the cutting resistance of the circular saw blade, improve the sharpness of the saw teeth 110, and further reduce the probability of burrs being generated during the use of the circular saw blade, thereby reducing the scratches caused by burrs to the formed product 300. Therefore, this embodiment can improve the quality yield and production efficiency of the formed product 300.

[0036] Therefore, multiple saw teeth 110 are circumferentially arranged on the outer contour of the saw blade body 100, and a spiral chip-collecting groove 120 is provided between two adjacent saw teeth 110. When the spiral chip-collecting groove 120 rotates in the same direction as the saw blade body 100, the circular saw blade can more easily discharge chips, which can reduce the probability of waste chips sticking to the formed product 300, thereby reducing scratches on the formed product 300 caused by waste chips sticking to the formed product 300 and improving the quality yield of the formed product 300. At the same time, an inverted conical surface 112 is formed on the side of each saw tooth 110 away from the first end of the saw blade body 100, so that when the blank 400 to be processed is transported by a conveyor belt, the formed product 300 after being processed by the saw teeth 110 and the unprocessed product blank are separated. The connecting section between the material strips 400 is narrower on the side closer to the formed product 300, so that when the formed product 300 is peeled off, the material strip breaks more easily from the narrower part, which further ensures that the material strip will not remain on the processed formed product 300; at the same time, by forming a cutting inclination angle 111 at the first end of the upper and lower surfaces of the saw teeth 110 away from the saw blade body 100, the cutting inclination angle 111 can reduce the contact area between the saw teeth 110 and the formed product 300 during the cutting process, reduce the cutting resistance of the circular saw blade, improve the sharpness of the saw teeth 110, reduce the probability of burrs generated by the circular saw blade during use, reduce the scratches caused by burrs to the formed product 300, thereby improving the quality yield and production efficiency of the formed product 300.

[0037] Reference Figure 2 and Figure 3 As shown, in some embodiments, the spiral chip groove 120 has a groove front angle 121 formed at the first end near the saw tooth 110.

[0038] By setting the groove front angle 121, the chip removal capacity of the spiral chip groove 120 can be improved, reducing the probability of waste chips adhering to the spiral chip groove 120, thereby reducing scratches caused by waste chips on the surface of the molded product 300, and thus improving the quality yield of the molded product. In addition, the groove front angle 121 can also increase the sharpness of the serrations 110, thereby improving the production efficiency of the molded product. Those skilled in the art can adjust the angle of the groove front angle 121 to further adjust the chip removal capacity.

[0039] For example, refer to Figure 2 and Figure 3 As shown, the spiral chip groove 120 is provided at the first end of the saw tooth 110, that is, the front cutting surface of the saw tooth 110. The front cutting surface of the saw tooth 110 and the center line of the saw blade body 100 form a groove front angle 121, wherein the center line is the line that passes through the radius of the saw blade body 100 and intersects with the cutting edge of the front cutting surface.

[0040] In some embodiments, the groove front angle 121 of the spiral chip groove 120 can be set to 12° to improve the chip removal capacity of the spiral chip groove 120, while increasing the sharpness of the serrations 110 to improve the quality yield and production efficiency of the aluminum alloy type molded product 300.

[0041] In some embodiments, the ratio of the helix angle 122 and the groove front angle 121 of the spiral chip groove 120 is set to 11:12.

[0042] It is understandable that by setting the ratio of the helix angle 122 and the front angle 121 of the spiral chip groove 120 to 11:12, the chip removal capacity of the spiral chip groove 120 and the sharpness of the saw teeth 110 can be taken into account at the same time.

[0043] For example, in some embodiments, the helix angle 122 of the spiral chip groove 120 is set to 11°, and the angle of the groove front angle 121 of the spiral chip groove 120 is set to 12°, which can realize the processing of products with high hardness such as aluminum alloy forming products 300 and increase chip removal capacity.

[0044] In some embodiments, the inverted conical surface 112 and the vertical surface of the vertical saw blade body 100 are formed with an inverted conical angle 113; the angular ratio of the inverted conical angle 113, the blade tilt angle 111, the helix angle 122 of the helical chip groove 120 and the groove front angle 121 satisfies 5:1:11:12.

[0045] By satisfying the angle ratio of the inverted cone angle 113, the blade tilt angle 111, the helix angle 122, and the groove front angle 121 to 11:12:5:1, the appearance and flatness of the aluminum alloy type molded product 300 can meet the design requirements of the aluminum alloy type molded product 300, thereby improving the quality yield and production efficiency of the aluminum alloy type molded product 300.

[0046] In some embodiments, each blade inclination angle 111 is set to 1°, each inverted cone angle 113 is set to 5°, each helix angle 122 is set to 11°, and each groove front angle 121 is set to 12°.

[0047] Exemplary, in some embodiments, reference is made to Figures 1 to 7 As shown, when processing aluminum alloy products, by setting the cutting angle 111 of the upper and lower surfaces of the saw tooth 110 to 1°, and by setting the inverted cone angle 113 of the saw tooth 110 to 5°, the helix angle 122 to 11°, and the groove front angle 121 to 12°, the quality yield and production efficiency of the aluminum alloy formed product 300 can be improved.

[0048] In some embodiments, the saw blade body 100 is provided with a saw blade mounting hole 130, which is concentrically arranged with the saw blade body 100.

[0049] By concentrically setting the saw blade mounting hole 130 and the saw blade body 100, it can be ensured that the circular saw blade will not generate eccentric force when rotating at high speed during use, thereby reducing the vibration of the circular saw blade, improving the processing accuracy of the circular saw blade and the surface finish of the formed product 300, and thus improving the quality yield and production efficiency of the formed product 300.

[0050] In some embodiments, refer to Figure 2 As shown, the circular saw blade can be fixedly installed on the cutting equipment of the machine tool through the saw blade mounting hole 130.

[0051] In some embodiments, the circular saw blade further includes a clamping portion 140 located at the edge of the saw blade mounting hole 130; the thickness of the clamping portion 140 is greater than the thickness of the saw blade body 100.

[0052] Understandably, the thickness of the clamping part 140 is greater than the thickness of the saw blade mounting hole 130, resulting in a more stable clamping.

[0053] For example, in some embodiments, the thickness of the saw blade body 100 is set to 0.8 mm, and the thickness of the clamping portion 140 is set to 1.0 mm. The thickness of the clamping portion 140 is greater than the thickness of the saw blade body 100, thereby reducing wear on the circular saw blade during use and increasing its service life. Those skilled in the art do not impose specific limitations on the thickness of the clamping portion 140, and can selectively set it according to actual conditions.

[0054] In some embodiments, the diameter ratio of the saw blade mounting hole 130, the clamping part 140, and the saw blade body 100 is set to 13:20:55.

[0055] The saw blade mounting hole 130, the clamping part 140, and the saw blade body 100 are all concentrically arranged, and their respective diameters represent the distance from their respective outer edges to the center of the circle.

[0056] Setting the diameter ratio of the saw blade mounting hole 130, the clamping part 140, and the saw blade body 100 to 13:20:55 further ensures that the circular saw blade can meet the processing requirements of the product, resulting in a longer lifespan and higher processing accuracy. Specifically, setting the diameter ratio of the saw blade mounting hole 130 to the clamping part 140 to 13:20 increases the contact area between the circular saw blade and the cutting equipment, providing sufficient clamping force to prevent the circular saw blade from falling off or shifting during high-load use, improving the stability of the circular saw blade, and thus improving the yield of the formed product 300. Setting the diameter ratio of the clamping part 140 to the saw blade body 100 to 20:55 increases the contact area between the saw blade body 100 and the air, improving the heat dissipation performance of the circular saw blade during high-speed operation, thereby improving the stability of the circular saw blade and reducing the probability of thermal deformation of the circular saw blade causing scratches on the surface of the formed product 300, thus improving the yield of the formed product 300.

[0057] In this embodiment, no specific value is imposed on the diameter of the saw blade mounting hole 130. Those skilled in the art can selectively set the diameter of the saw blade mounting hole 130 according to the actual situation.

[0058] For example, in some embodiments, the diameter of the saw blade mounting hole 130 can be 13mm, the diameter of the clamping part 140 can be 20mm, and the diameter of the saw blade body 100 can be 55mm, so as to improve the stability of the saw blade and reduce the probability of thermal deformation of the circular saw blade causing scratches on the surface of the formed product 300.

[0059] In some embodiments, the circular saw blade is configured as a high-strength carbide saw blade.

[0060] It is understandable that during the processing of aluminum alloy product blanks 400, the circular saw blade may undergo thermal deformation, causing scratches on the surface of the formed product 300. Using a high-strength cemented carbide for the circular saw blade can reduce the probability of thermal deformation during processing. This application does not limit the type of high-strength cemented carbide used in the circular saw blade; different types of high-strength cemented carbide can be selected based on the specific requirements of the formed product 300.

[0061] In some embodiments, the saw blade body 100 and the clamping part 140 are integrally formed.

[0062] It is understandable that the saw blade body 100 and the clamping part 140 are integrally formed into a complete structure. Because the complete structure can evenly transmit the force, the saw blade body 100 and the clamping part 140 have higher structural stability during the cutting process, and can maintain the stability of the saw blade body 100 and the clamping part 140 for a longer time, thereby increasing the service life of the circular saw blade.

[0063] For example, refer to Figures 1 to 8 The circular saw blade shown is a type of circular saw blade provided in this application. The circular saw blade includes a saw blade body 100. A saw blade mounting hole is provided at the concentric position of the saw blade body 100. A clamping part 140 is provided on the outer contour of the saw blade mounting hole 130. A plurality of saw teeth 110 are provided circumferentially on the outer contour of the saw blade body 100.

[0064] The saw teeth 110 are hook-shaped and have a cutting inclination angle 111. The cutting inclination angle 111 is formed by creating a bevel on both the upper and lower surfaces of the saw teeth 110. This reduces the cutting resistance of the circular saw blade, increases its sharpness, and thus improves the quality yield and production efficiency of the formed product 300. Simultaneously, the cutting inclination angle 111 also reduces the contact area between the upper and lower surfaces of the saw teeth 110 and the formed product 300, further reducing the cutting resistance of the circular saw blade, increasing its sharpness, and decreasing the probability of burrs forming during use. This reduces the risk of scratches on the formed product 300 caused by burrs, thereby improving the quality yield and production efficiency of the formed product 300.

[0065] Among them, the saw teeth 110 are provided with a reverse cone angle 113, at which time, as Figure 8 As shown, the connecting segment 200 formed after cutting the product blank 400 by the inverted cone angle 113 is thinner at the end near the molded product 300. When the molded product 300 is peeled off, the material strip on the connecting segment 200 is easier to separate from the molded product 300, reducing the probability of material strip remaining on the connecting segment 200 after cutting in the molded product 300. This reduces the scratches caused by material strip remaining on the connecting segment 200 on the molded product 300, thereby improving the quality yield of the molded product 300.

[0066] Among them, such as Figure 1 As shown, a spiral chip-collecting groove 120 is provided between every two adjacent saw teeth 110. The spiral chip-collecting groove has a spiral angle 122 and a groove front angle 121, which can improve the quality yield and production efficiency of the formed products. The spiral direction of the spiral chip-collecting groove 120 is consistent with the rotation direction of the circular saw blade, which can improve the chip removal capacity of the spiral chip-collecting groove 120, reduce the probability of waste chips adhering to the formed product 300 and the spiral chip-collecting groove 120, and reduce scratches on the surface of the formed product 300 caused by waste chips. In addition, the groove front angle 121 of the spiral chip-collecting groove 120 increases the sharpness of the saw teeth 110, thereby improving the quality yield and production efficiency of the formed product 300.

[0067] By keeping the center of the saw blade mounting hole 130 and the center of the circular saw blade support shaft concentric, the circular saw blade will not generate eccentric force when rotating at high speed during use, thereby reducing the vibration of the circular saw blade, improving the processing accuracy of the circular saw blade and the surface finish of the formed product 300, and thus improving the quality yield and production efficiency of the formed product 300.

[0068] The circular saw blade is made of high-strength cemented carbide, which reduces the probability of thermal deformation caused by processing, improves the stability of the circular saw blade, thereby reducing the scratches on the surface of the formed product 300 caused by thermal deformation during processing, and improving the quality yield of the formed product 300.

[0069] Among them, such as Figure 1 The saw blade body 100 and clamping part 140 shown are integrally formed, which can maintain the stability of the overall structure of the circular saw blade for a longer period of time, thereby increasing the service life of the circular saw blade. The thickness of the clamping part 140 is greater than the thickness of the saw blade body 100, which can reduce wear on the circular saw blade during use and further extend its service life. The thickness of the saw blade body 100 is set to 0.8 mm, and the thickness of the clamping part 140 is set to 1 mm.

[0070] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A circular saw blade characterized by, The application relates to a circular saw blade. The saw blade body is provided with a plurality of saw teeth on the outer contour in the circumferential direction; a spiral chip groove is arranged between two adjacent saw teeth, the rotation direction of the spiral chip groove is consistent with the rotation direction of the saw blade body; a reverse taper is formed on the side of each saw tooth far from the first end of the saw blade body; the upper surface and the lower surface of the saw tooth are both formed with a blade rake angle far from the first end of the saw blade body.

2. The circular saw blade of claim 1, wherein, The spiral chip groove is formed with a front corner of a groove near the first end of the saw tooth.

3. The circular saw blade of claim 2, wherein, The angle ratio of the spiral angle of the spiral chip groove and the front corner of the groove is 11:

12.

4. The circular saw blade of claim 2, wherein, The reverse taper and the vertical surface perpendicular to the saw blade body are formed with a reverse taper angle; the angle ratio of the reverse taper angle, the blade rake angle, the spiral angle of the spiral chip groove and the front corner of the groove satisfies 5:1:11:

12.

5. The circular saw blade of claim 4, wherein, Each blade rake angle is 1 degree, each reverse taper angle is 5 degrees, each spiral angle is 11 degrees and each front corner of the groove is 12 degrees.

6. The circular saw blade of claim 1, wherein, The saw blade body is provided with a saw blade mounting hole which is concentric with the saw blade body.

7. The circular saw blade of claim 6, wherein, The circular saw blade further comprises a clamping part which is located at the edge of the saw blade mounting hole; the thickness of the clamping part is greater than the thickness of the saw blade body.

8. The circular saw blade of claim 7, wherein, The diameter ratio of the saw blade mounting hole, the clamping part and the saw blade body is 13:20:

55.

9. The circular saw blade of claim 1, wherein, The circular saw blade is a high-strength hard alloy saw blade.

10. The circular saw blade of claim 8, wherein, The saw blade body and the clamping part are integrally formed.

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