Saw blades and cutting equipment for sawing fiber composite materials

Abstract

The present invention relates to the technical field of cutting equipment, and provides a saw blade and cutting equipment for sawing fiber composite materials. The saw blade for sawing fiber composite materials comprises: a multi-tooth saw blade, the multi-tooth saw blade comprises at least two types of saw teeth, including flat teeth, left teeth and right teeth, and the saw teeth are alternately arranged along the circumference of the multi-tooth saw blade according to their types; the main edges, secondary edges and side edges of the flat teeth, left teeth and right teeth are respectively formed with bevel grinding angles, so that the width of the front cutting surface increases from the outside to the inside. The present invention forms a bevel grinding angle by beveling the secondary edges and side edges of the flat teeth and left and right teeth, which can gradually increase the cutting force in the process of the blade teeth cutting into the material and reduce the cutting impact force. It can be used for linear sawing of fiber composite materials, can improve the dynamic stability and sawing speed of sawing, and extend the service life of the saw blade; and through the alternating arrangement of flat teeth and left and right teeth, the advantages of the two types of saw teeth are brought into play, and the effect is better when cutting in the transition cutting direction, and the scope of application is wider.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting equipment, and in particular to a saw blade and cutting equipment for sawing fiber composite materials. Background Art

[0002] Because fiber composites are anisotropic and non-uniform, during the specific cutting process, regardless of the cutting direction, the cutting edge of the tooth should mainly be perpendicular to or as perpendicular as possible to the fiber. This way, the fibers are more likely to be sheared, cutting efficiency is higher, cutting force is lower, and tool life is longer. The resin in fiber composites has a certain elasticity, so it is easy to recover elastically after cutting. If the saw path of the tool is less than or equal to the thickness of the saw body, the tool is prone to clamping. When fiber composites are sawed, the temperature rises and the resin melts or softens, which makes the tool sticky. Therefore, the contact area between the tool and the material should be minimized as much as possible, and a large chip space should be provided. In addition, fiber composites are relatively strong, and the fibers are also hard points, so the tool wears quickly. Moreover, the anisotropy and non-homogeneity require high dynamic stability of the tool, otherwise the teeth are prone to breakage.

[0003] Prior art fiber composite cutting tools include diamond grinding wheels and diamond saw blades. Diamond grinding wheels are designed for grinding, and most teeth cut with a negative rake angle, resulting in extremely low removal efficiency. The grinding wheel's dense structure creates a small chip compartment, which can easily clog the chip compartment when the resin melts or softens, leading to severe tool heating, cutting failure, and potentially wheel breakage. Furthermore, because the sawing path of diamond grinding wheels is smaller than or equal to the saw body width, it is prone to causing saw pinching. This type of tool is unsuitable for automated cutting and has a short tool life. There are two types of diamond saw blades: toothless saws, which cut similarly to grinding wheels and are also unsuitable for cutting fiber composites. Multi-tooth saws offer a variety of tooth types, depending on the material type. For example, flat teeth can be used for longitudinal sections parallel to the fiber direction, while left and right teeth can be used for transverse sections. The sawing path is larger than the saw body thickness, minimizing the risk of saw pinching. Furthermore, the larger chip compartment facilitates chip removal and reduces cutting temperatures. Therefore, from an overall tool design perspective, a multi-tooth saw is a more suitable solution.

[0004] However, in actual use, the existing multi-tooth diamond saw has a short lifespan, poor dynamic stability during the cutting process, and is prone to tooth breakage and wear. The main reason is that the tooth shape design of the existing multi-tooth saw blade is unreasonable, including the following aspects:

[0005] 1) Saw teeth are usually wide at the top and narrow at the bottom, or of equal width at the top and bottom. When the teeth first enter the material, the impact force is too great. Diamond is a brittle material and is easily broken after impact.

[0006] 2) If the flank of the serrated side edge is not bevel-ground (the side edge does not have a back angle), the flank of the tooth will rub against the machined surface, accelerating the wear of the flank of the side edge, and generating vibration and frictional heat, which will reduce the tool life and dynamic stability.

[0007] 3) When the cutting edge does not have a secondary edge, the teeth have sharp cutting edges, which can easily cause stress concentration. The sharp part of the cutting edge is easy to break or wear quickly, which reduces the life of the tool.

[0008] 4) When the cutting edge has a secondary edge, the secondary edge flank is not bevel ground, and the secondary edge flank rubs against the material, which accelerates the wear of the secondary edge flank and generates vibration and friction heat, which reduces the tool life and dynamic stability. Summary of the Invention

[0009] The present invention provides a saw blade and a cutting device for sawing fiber composite materials, which are used to solve the defects of the prior art multi-tooth diamond saw, such as poor stability, easy tooth breakage and wear, and short service life due to unreasonable tooth shape design.

[0010] The present invention provides a saw blade for sawing fiber composite materials, comprising: a multi-tooth saw blade, wherein the multi-tooth saw blade comprises at least two types of saw teeth, namely, flat teeth, left teeth, and right teeth, and the saw teeth are alternately arranged along the circumference of the multi-tooth saw blade according to type; wherein,

[0011] The flat tooth comprises a first main edge, a first secondary edge, and a first side edge formed on the outer side of the rake face, wherein bevel grinding angles are sequentially formed between the first main edge, the first secondary edge, and the first side edge, so that the width of the rake face of the flat tooth increases sequentially from the outer side to the inner side;

[0012] The left tooth includes a second main edge, a second secondary edge, and a second side edge formed on the outer side of the rake face, and oblique grinding angles are formed successively between the second main edge, the second secondary edge, and the second side edge, so that the width of the rake face of the left tooth increases successively from the outer side to the inner side;

[0013] The right tooth includes a third main edge, a third secondary edge and a third side edge formed on the outer side of the front cutting edge. Bevel grinding angles are formed successively between the third main edge, the third secondary edge and the third side edge, so that the width of the front cutting edge of the right tooth increases successively from the outer side to the inner side.

[0014] According to a saw blade for sawing fiber composite materials provided by the present invention, normal clearance angles of the first main edge, the first auxiliary edge, and the first side edge are all greater than zero.

[0015] According to a saw blade for sawing fiber composite materials provided by the present invention, the normal clearance angles of the second main edge, the second auxiliary edge, the second side edge, the third main edge, the third auxiliary edge and the third side edge are all greater than zero.

[0016] According to a saw blade for sawing fiber composite materials provided by the present invention, the bevel grinding angles of the first secondary edges located on both sides of the first main edge are equal.

[0017] According to a saw blade for sawing fiber composite materials provided by the present invention, the bevel grinding angles of the second secondary edges on both sides of the second main edge are unequal; the bevel grinding angles of the third secondary edges on both sides of the third main edge are unequal.

[0018] According to a saw blade for sawing fiber composite materials provided by the present invention, the bevel grinding angles of the first side edges located on both sides of the first main edge are equal.

[0019] According to a saw blade for sawing fiber composite materials provided by the present invention, the bevel grinding angles of the second side edges on both sides of the second main edge are equal; the bevel grinding angles of the third side edges on both sides of the third main edge are equal.

[0020] According to the saw blade for sawing fiber composite materials provided by the present invention, the rake faces of the flat teeth, the rake faces of the left teeth, and the rake faces of the right teeth respectively form rake angles.

[0021] According to a saw blade for sawing fiber composite materials provided by the present invention, the multi-tooth saw blade also includes a first saw body for installing the flat teeth, a second saw body for installing the left teeth, and a third saw body for installing the right teeth. The maximum width of the flat teeth is greater than the width of the first saw body, the maximum width of the left teeth is greater than the width of the second saw body, and the maximum width of the right teeth is greater than the width of the third saw body.

[0022] The present invention further provides a cutting device comprising the saw blade for sawing fiber composite materials according to an embodiment of the present invention.

[0023] The present invention provides a saw blade for sawing fiber composite materials. The saw blade forms a bevel grinding angle by beveling the auxiliary edges and side edges of the flat teeth and left and right teeth, so that the overall tooth shape is a double trapezoidal structure that is narrow at the top and wide at the bottom. The cutting force in the process of the teeth cutting into the material is gradually increased, the cutting impact force is reduced, and the diamond teeth are prevented from being broken by the impact, and the wear-resistant characteristics of the diamond teeth are fully utilized. The saw blade can be used for straight-line sawing of fiber composite materials, can improve the dynamic stability and sawing speed of sawing, and extend the service life of the saw blade. Moreover, the alternating arrangement of the flat teeth and the left and right teeth can bring into play the advantages of the two types of saw teeth, and the cutting effect is better when cutting in the transition cutting direction, and the scope of application is wider.

[0024] Furthermore, the present invention also provides a cutting device, which includes the saw blade for sawing fiber composite materials according to the above embodiment, and thus has the same advantages as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 1 is a schematic structural diagram of a saw blade for sawing fiber composite materials provided by the present invention;

[0027] Figure 2 It is a partial schematic diagram of the middle flat teeth, left teeth and right teeth of a saw blade for sawing fiber composite materials provided by the present invention;

[0028] Figure 3 This is a schematic structural diagram of the flat gear provided by the present invention from a first perspective;

[0029] Figure 4 This is a schematic structural diagram of the flat gear provided by the present invention from a second perspective;

[0030] Figure 5 This is a front view of the flat gear provided by the present invention;

[0031] Figure 6 It is a right side view of the flat gear provided by the present invention;

[0032] Figure 7 It is a left side view of the flat gear provided by the present invention;

[0033] Figure 8 This is a schematic structural diagram of the left tooth provided by the present invention from a first perspective;

[0034] Figure 9 This is a schematic structural diagram of the left tooth from a second perspective provided by the present invention;

[0035] Figure 10 This is a front view of the left tooth provided by the present invention;

[0036] Figure 11 This is a left view of the left tooth provided by the present invention

[0037] Figure 12 It is a top view of the left tooth provided by the present invention.

[0038] Reference numerals:

[0039] 100: flat teeth; 200: left teeth; 300: right teeth.

[0040] 110: first main edge; 111: first main edge flank; 120: first secondary edge; 121: first secondary edge flank; 130: first side edge; 131: first side edge flank; 140: first saw blade;

[0041] 210: second main edge; 211: second main edge flank; 220: second secondary edge; 221: second secondary edge flank; 230: second side edge; 231: second side edge flank; 240: second saw body. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0043] The following combination Figures 1-12 The present invention describes a saw blade for sawing fiber composite materials, including: a multi-tooth saw blade, the multi-tooth saw blade including at least two types of saw teeth among flat teeth 100, left teeth 200 and right teeth 300, and the saw teeth are alternately arranged along the circumference of the multi-tooth saw blade according to type (that is, referring to the three types of tooth shapes of flat teeth 100, left teeth 200 and right teeth 300).

[0044] The flat tooth 100 includes a first main edge 110, a first secondary edge 120, and a first side edge 130 formed on the outer side of the rake face. Bevel grinding angles are formed sequentially between the first main edge 110, the first secondary edge 120, and the first side edge 130, so that the width of the rake face of the flat tooth 100 increases sequentially from the outer side to the inner side.

[0045] The left tooth 200 includes a second main edge 210, a second secondary edge 220, and a second side edge 230 formed on the outer side of the rake face. Bevel grinding angles are formed sequentially between the second main edge 210, the second secondary edge 220, and the second side edge 230, so that the width of the rake face of the left tooth 200 increases sequentially from the outer side to the inner side.

[0046] The right tooth 300 includes a third main edge, a third secondary edge, and a third side edge formed on the outer side of the rake face. Bevel angles are formed between the third main edge, the third secondary edge, and the third side edge, such that the width of the rake face of the right tooth 300 increases from the outer side to the inner side. It is understood that the structure of the right tooth is similar to that of the left tooth, except that the main edge is deflected in a different direction.

[0047] Among them, the first main edge 110 is located in the middle of the outer side of the flat tooth 100, the second main edge 210 is located on the left side of the outer side of the left tooth 200, and the third main edge is located on the right side of the outer side of the right tooth 300. Since the left tooth 200 and the right tooth 300 are the same in structure, except that the biased position of the main edge is symmetrically designed, the left tooth 200 and the right tooth 300 (hereinafter collectively referred to as the left and right teeth) can be prefabricated uniformly, but the installation direction is different. The following left and right tooth examples are all based on the left tooth 200.

[0048] Specifically, the flat teeth 100, left teeth 200 and right teeth 300 of this embodiment are respectively composed of three parts: the main edge, the auxiliary edge and the side edge. The auxiliary edges are located on both sides of the main edge and form an oblique grinding angle, so that a trapezoidal structure is formed between the main edge and the auxiliary edges on both sides. The auxiliary edges on both sides respectively form an oblique grinding angle with the side edges on the corresponding sides, so that the side edges on both sides form a trapezoidal structure. Therefore, the main edge, auxiliary edge and side edge form a double trapezoidal structure on the rake face that is narrow at the top and wide at the bottom in the height direction. Figure 6 In the embodiment, the bevel grinding angle of the side edge of the flat tooth 100 is ε, and the bevel grinding angle of the auxiliary edge of the flat tooth 100 is σ. The angles ε and σ can be bevel ground according to actual conditions. In this embodiment, 1°≤ε≤10°, 20°≤σ≤70°; Figure 11 In the embodiment, the side cutting edges of the left and right teeth are grinded at angles ε1 and ε2, and the auxiliary cutting edges of the left and right teeth are grinded at angles σ1 and σ2. The angles ε1, ε2, σ1, and σ2 can be grinded according to actual conditions. In this embodiment, 1°≤ε1≤10°, 1°≤ε2≤10°, 20°≤σ1≤70°, and 20°≤σ2≤70°.

[0049] Furthermore, during the manufacturing process, the flat teeth 100 and the left and right teeth in this embodiment are chamfered on both sides of the tooth tip. After chamfering, the main cutting edge consists of three parts: a main edge and two beveled secondary edges. The main edge is mainly used to cut fibers perpendicular to the main edge, and the beveled secondary edges are mainly used to cut fibers parallel to the main edge. This tooth design can cause shear damage to the fibers and avoid fiber breakage, thereby reducing cutting force and increasing cutting speed. When sawing longitudinally (the tool feed direction is perpendicular to the fiber direction), the main edge of the saw blade cuts perpendicular to the fiber direction and contacts the material before the side edge. Therefore, the main edge can fully exert its shearing effect, resulting in better results when sawing longitudinally.

[0050] In addition, after the first main edge 110 is bevel-ground and chamfered, a first secondary edge 120 is formed, which can further reduce the impact force of the blade teeth and improve cutting stability and tool life; after the main edge is bevel-ground and chamfered, the entire blade has no sharp tooth tips, which can prevent the tooth tips from being broken or severely worn due to excessive impact force. After the second main edge 210 (and the third main edge) is bevel-ground and chamfered, the impact force of the blade teeth can be further reduced, and cutting stability and tool life can be improved; the second secondary edge 220 (and the third secondary edge) is bevel-ground as unequal edges, so that the second main edge 210 (and the third main edge) is deflected to one side, so that the second secondary edge 220 (and the third secondary edge) can cut the transverse fibers more effectively, and according to the deflection position of the second main edge 210 (and the third main edge), a left tooth 200 and a right tooth 300 are formed respectively, and the main edges are symmetrically arranged at the positions of the left tooth 200 and the right tooth 300; in addition, the left tooth 200, the right tooth 300 and the flat tooth 100 are alternately arranged in the sawtooth arrangement, that is, Figure 2 As shown, this combined sawtooth can give full play to the advantages of two types of sawtooth (i.e., the flat teeth 100 and the left and right teeth) during the sawing process, and has a better effect when cutting in the transition cutting direction and a wider range of applications.

[0051] Furthermore, two first side edges 130 are provided in the flat tooth 100, and one first side edge 130 is arranged on both sides of the first main edge 110, and the two are obliquely ground to form a Figure 6 Furthermore, the bevel grinding angles of the first side edges 130 on both sides of the first main edge 110 are equal, that is, Figure 6 As shown in , the ε angles of the two first side edges 130 are equal. Two first secondary edges 120 are provided, and the first secondary edge 120 is a chamfer formed between the first main edge 110 and the first side edge 130. In this embodiment, chamfers are cut on both sides of the first main edge 110 to form two first secondary edges 120. By beveling the two sides of the first main edge 110 to form the first secondary edge 120, the impact force of the blade teeth can be further reduced, and the cutting stability and tool life can be improved; the overall blade has no sharp tooth tips, which can avoid the tooth tips from being broken or severely worn due to excessive impact force. Furthermore, the bevel grinding angles of the two first secondary edges 120 are equal, that is, as shown in FIG. Figure 6 As shown in FIG, the bevel grinding angles σ of the first auxiliary edges 120 on both sides of the first main edge 110 are equal.

[0052] Furthermore, the second side edges 230 (third side edges) in the left and right teeth include two, and one second side edge 230 (third side edge) is arranged on both sides of the second main edge 210 (third main edge), and the two are obliquely ground to form Figure 11 Furthermore, the bevel grinding angles of the second side edges 230 on both sides of the second main edge 210 are equal; the bevel grinding angles of the third side edges on both sides of the third main edge are equal, that is, Figure 11As shown in , taking the left tooth 200 as an example, the ε1 angle of the second side edge 230 is equal to the ε2 angle of the second side edge 230 on the other side. Of course, the two can also be unequal. The angles of ε1 and ε2 can be designed accordingly according to the actual conditions of use. Two second secondary edges 220 (third secondary edges) are provided. The second secondary edge 220 is the chamfer formed between the second main edge 210 and the second side edge 230, and the third secondary edge is the chamfer formed between the third main edge and the third side edge. In this embodiment, taking the left tooth 200 as an example, chamfers are cut on both sides of the second main edge 210 to form two second secondary edges 220. By beveling the two sides of the second main edge 210 to form the second secondary edges 220, the impact force of the blade can be further reduced, and the cutting stability and tool life can be improved. The overall blade has no sharp tooth tip, which can avoid the tooth tip from being broken or severely worn due to excessive impact force. The same applies to the right tooth 300. Furthermore, the bevel grinding angles of the second auxiliary edges 220 on both sides of the second main edge 210 are not equal; the bevel grinding angles of the third auxiliary edges on both sides of the third main edge are not equal. Taking the left tooth 200 as an example, Figure 11 As shown in FIG, the angle σ1 of the second auxiliary edge 220 on one side is not equal to the angle σ2 of the second auxiliary edge 220 on the other side.

[0053] The present invention provides a saw blade for sawing fiber composite materials. By beveling and grinding the flat teeth 100 and the auxiliary edges and side edges of the left and right teeth to form a bevel grinding angle, the overall tooth shape is a double trapezoidal structure that is narrow at the top and wide at the bottom. The cutting force in the process of the teeth cutting into the material is gradually increased, the cutting impact force is reduced, and the diamond teeth are prevented from being broken by the impact, and the wear-resistant characteristics of the diamond teeth are fully utilized. The saw blade can be used for straight-line sawing of fiber composite materials, can improve the dynamic stability and sawing speed of sawing, and extend the service life of the saw blade. Moreover, through the alternating arrangement of the flat teeth 100 and the left and right teeth, the advantages of the two types of saw teeth are brought into play, the cutting effect is better when cutting in the transition cutting direction, and the scope of application is wider.

[0054] In one embodiment of the present invention, the normal clearance angles of the first main edge 110, the first secondary edge 120 and the first side edge 130 are all greater than zero; the normal clearance angles of the second main edge 210, the second secondary edge 220, the second side edge 230, the third main edge, the third secondary edge and the third side edge are all greater than zero. In this embodiment, the back cutting surfaces of the main edges, secondary edges and side cutting surfaces of the flat teeth 100 and the left and right teeth are all bevel-ground to have normal clearance angles, thereby avoiding friction and impact between the back cutting surface and the material during sawing, improving cutting stability, extending the service life of the diamond saw teeth and reducing cutting resistance. Figure 5 As shown, taking the first main edge 110 as an example, the first main edge flank 111 will have a normal back angle α after being bevel-ground, preferably, 10°≤α≤30°; Figure 10 As shown, the second main edge flank 211 has a normal back angle α1 after bevel grinding, preferably, 10°≤α1≤30°; Figure 7 and Figure 12 As shown, the first auxiliary edge flank 121 has a normal clearance angle after being beveled, the second auxiliary edge flank 221 has a normal clearance angle after being beveled, the first side edge flank 131 has a normal clearance angle after being beveled, and the second side edge flank 231 has a normal clearance angle after being beveled. Figure 12 In the embodiment, due to the bevel grinding of the flank surface, the width of the second auxiliary edge flank surface 221 is gradually reduced, and the angle between the outer end of the second auxiliary edge 220 and the horizontal line is formed as follows: Figure 12 The τ angle is shown.

[0055] In one embodiment of the present invention, the rake faces of the flat teeth 100, the left teeth 200, and the right teeth 300 respectively form rake angles. Specifically, the rake faces of the flat teeth 100 can form a positive rake angle or a negative rake angle; while the rake faces of the left teeth 200 and the right teeth 300 can form a negative rake angle. A positive rake angle is more conducive to longitudinal sectioning when cutting, while a negative rake angle is more conducive to cross-sectioning when cutting. Figure 5 As shown, the rake face of the flat tooth 100 has a rake angle γ, preferably, 10°≤γ≤30°; Figure 10 As shown, the rake face of the left tooth 200 has a negative rake angle γ1, preferably, 10°≤γ1≤30°.

[0056] In one embodiment of the present invention, the multi-tooth saw blade further comprises a first saw body 140 for mounting the flat tooth 100, a second saw body 240 for mounting the left tooth 200, and a third saw body for mounting the right tooth 300. The maximum width of the flat tooth 100 is greater than the width of the first saw body 140, the maximum width of the left tooth 200 is greater than the width of the second saw body 240, and the maximum width of the right tooth 300 is greater than the width of the third saw body. Generally, the width of the inner end of the first side edge 130 of the flat tooth 100 is greater than the width of the first saw body 140, that is, Figure 6 The width of the lower end of the first side edge 130 is greater than the width of the first saw body 140; the width of the inner end of the second side edge 230 of the left tooth 200 is greater than the width of the second saw body 240, that is, Figure 11 The width of the lower end of the second side blade 230 is greater than the width of the second saw body 240 , and the same is true for the third side blade of the right tooth 300 .

[0057] The present invention further provides a cutting device, which includes the saw blade for sawing fiber composite materials according to the above embodiment and has the same advantages as the above embodiment.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A saw blade for sawing fiber composite materials, characterized in that include: A multi-tooth saw blade, comprising at least two types of saw teeth, namely, flat teeth, left teeth, and right teeth, and the saw teeth are alternately arranged along the circumference of the multi-tooth saw blade according to type; wherein, The flat tooth comprises a first main edge, a first secondary edge, and a first side edge formed on the outer side of the rake face, wherein bevel grinding angles are sequentially formed between the first main edge, the first secondary edge, and the first side edge, so that the width of the rake face of the flat tooth increases sequentially from the outer side to the inner side; The left tooth includes a second main edge, a second secondary edge, and a second side edge formed on the outer side of the rake face, and oblique grinding angles are formed successively between the second main edge, the second secondary edge, and the second side edge, so that the width of the rake face of the left tooth increases successively from the outer side to the inner side; The right tooth includes a third main edge, a third secondary edge, and a third side edge formed on the outer side of the rake face, wherein bevel grinding angles are sequentially formed between the third main edge, the third secondary edge, and the third side edge, so that the width of the rake face of the right tooth increases sequentially from the outer side to the inner side; Normal clearance angles of the first main edge, the first secondary edge, and the first side edge are all greater than zero; Normal clearance angles of the second main edge, the second secondary edge, the second side edge, the third main edge, the third secondary edge, and the third side edge are all greater than zero.

2. The saw blade for sawing fiber composite materials according to claim 1, characterized in that The bevel grinding angles of the first secondary edges on both sides of the first main edge are equal.

3. The saw blade for sawing fiber composite materials according to claim 1, characterized in that The bevel grinding angles of the second auxiliary edges on both sides of the second main edge are not equal; the bevel grinding angles of the third auxiliary edges on both sides of the third main edge are not equal.

4. The saw blade for sawing fiber composite materials according to claim 1, characterized in that The bevel grinding angles of the first side edges on both sides of the first main edge are equal.

5. The saw blade for sawing fiber composite materials according to claim 1, characterized in that The bevel grinding angles of the second side edges on both sides of the second main edge are equal; the bevel grinding angles of the third side edges on both sides of the third main edge are equal.

6. The saw blade for sawing fiber composite materials according to claim 1, characterized in that The rake faces of the flat teeth, the rake faces of the left teeth, and the rake faces of the right teeth respectively form rake angles.

7. The saw blade for sawing fiber composite materials according to any one of claims 1 to 6, characterized in that The multi-tooth saw blade also includes a first saw body for mounting the flat teeth, a second saw body for mounting the left teeth, and a third saw body for mounting the right teeth. The maximum width of the flat teeth is greater than the width of the first saw body, the maximum width of the left teeth is greater than the width of the second saw body, and the maximum width of the right teeth is greater than the width of the third saw body.

8. A cutting device, characterized in that: A saw blade for sawing fiber composite materials according to any one of claims 1 to 7.

Images