Band saw blade and method of machining

Abstract

The application discloses a band saw blade and a processing method, which comprises a steel band, a saw tooth group arranged on one side of the steel band, and at least two groups of saw tooth groups, wherein the saw teeth in the same saw tooth group have the same tooth splitting direction; wherein the saw tooth group comprises first saw teeth and second saw teeth, the height of the tooth tip of the first saw teeth to the steel band is less than the height of the tooth tip of the second saw teeth to the steel band, when the saw tooth group is deflected, the torsion angle of the second saw teeth is 2-6 degrees, and the torsion angle of the first saw teeth is 1-2 degrees less than the torsion angle of the second saw teeth. Compared with the prior art, the band saw blade and the processing method can avoid the problems of cutting too large, tooth impact and tooth pulling when sawing steel bars, pipe fittings and thin-walled parts under the condition of large vibration.

Description

Technical Field

[0001] This application relates to the field of band saw blade technology, and more specifically, to a band saw blade and a processing method thereof. Background Technology

[0002] Cutting is an essential process in manufacturing, and band saw blades are one of the main tools used in this process. When sawing solid materials, the workpiece is relatively rigid, resulting in minimal vibration, and band saw blade failure is mainly due to tooth wear. In this case, a larger clearance angle can be used to reduce feed resistance. However, when sawing steel bars, pipes, thin-walled parts, and irregularly shaped parts, the workpiece has lower rigidity, and sawing is often accompanied by greater vibration. In this case, band saw blades are prone to abnormal failures such as excessive cut depth, tooth breakage, and tooth pull.

[0003] To address the aforementioned technical issues, existing technologies often employ a solution of reducing the back angle when dealing with band saw blades. While reducing the back angle can effectively reduce the problems of tooth breakage and tooth pulling in band saw blades, it also significantly increases feed resistance, leading to issues such as skewed cutting. This tooth profile is unsuitable when high efficiency is required.

[0004] Therefore, there is an urgent need for a band saw blade and processing method that can avoid problems such as excessive cutting depth, tooth breakage, and tooth pulling when sawing steel bars, pipes, thin-walled parts, etc., which are subject to large vibrations, and can also achieve higher processing efficiency. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this application provides a band saw blade and a processing method, which can avoid problems such as excessive cutting depth, tooth breakage, and tooth pulling when sawing steel bars, pipes, thin-walled parts and other materials with large vibrations, and also improves processing efficiency.

[0006] The technical solution provided in this application is as follows:

[0007] A band saw blade, characterized in that it comprises:

[0008] steel strip;

[0009] The saw teeth group is provided in at least two groups and arranged sequentially on one side of the steel strip. The tooth splitting directions of adjacent saw teeth groups are opposite, and the tooth splitting directions of the saw teeth in the same saw teeth group are the same.

[0010] in,

[0011] The saw tooth assembly includes a first saw tooth and a second saw tooth, wherein the height from the tip of the first saw tooth to the steel strip is less than the height from the tip of the second saw tooth to the steel strip.

[0012] When the saw teeth are eccentric, the twist angle of the second saw tooth is specifically 2° to 6°, and the twist angle of the first saw tooth is 1° to 2° smaller than the twist angle of the second saw tooth.

[0013] Preferably, a first tooth groove is provided between adjacent sawtooth groups, and a second tooth groove is provided between the first sawtooth and the second sawtooth within the same sawtooth group;

[0014] The depth of the first tooth groove is greater than the depth of the second tooth groove.

[0015] Preferably, the depth of the second tooth groove is less than the vertical height from the tip of the first tooth to the outer surface of the steel strip.

[0016] Preferably, the height difference between the tips of adjacent first and second saw teeth is 0.05mm to 0.30mm.

[0017] Preferably, the rake angle of the second saw tooth is 3° to 8°, and the rake angle of the first saw tooth is 0° to 3°.

[0018] Preferably, the back angle of the second saw tooth and the first saw tooth is specifically 25° to 35°.

[0019] Preferably, the distance between the tips of the first and second saw teeth in the same saw tooth group is P2;

[0020] The distance between the tip of the second saw tooth and the tip of the first saw tooth in the adjacent saw tooth group is P1;

[0021] Among them, P2 is less than P1.

[0022] Preferably, the distance between the tips of adjacent second saw teeth is P;

[0023] Where P = P1 + P2.

[0024] A processing method, characterized in that, for use in any of the band saw blades described above, the method includes the following steps:

[0025] S1. The steel strip is subjected to tooth forming treatment;

[0026] S2. The teeth after forming are divided into teeth. The teeth of adjacent saw teeth groups are divided in opposite directions, the teeth of the same saw teeth group are divided in the same direction, and the saw teeth of the same saw teeth group are processed at the same time.

[0027] S3. Clean the steel strip after tooth splitting;

[0028] S4. Heat treat the cleaned steel strip.

[0029] S5. Sandblast the heat-treated steel strip.

[0030] S6. If the straightness of the heat-treated steel strip does not reach the preset straightness, the method further includes the following step: adjusting the heat-treated steel strip by rolling straightening.

[0031] Preferably, a first tooth groove is provided between adjacent sawtooth groups, and a second tooth groove is provided between the first sawtooth and the second sawtooth in the same sawtooth group, wherein the depth h1 of the first tooth groove is greater than the depth h2 of the second tooth groove.

[0032] In step S2, when the formed teeth are divided, the tooth division height hs between the position of the striking saw teeth of the tooth dividing mold and the tooth tip of the second tooth pitch is greater than h1 and less than h2.

[0033] The band saw blade provided by this invention features a steel strip and a set of saw teeth. The saw teeth are located on one side of the steel strip, and there are at least two sets of saw teeth. The teeth in the same set have the same direction of division. Each set of saw teeth includes a first saw tooth and a second saw tooth. The distance between the tip of the first saw tooth and the steel strip is less than the distance between the tip of the second saw tooth and the steel strip. There is a height difference between the first saw tooth and the adjacent second saw tooth, so that there is a synergistic effect between the first and second saw teeth. That is, when the band saw blade starts cutting, the second saw tooth participates in the cutting first, and the first saw tooth acts as a support tooth. When cutting thin-walled or irregularly shaped parts, it prevents the second saw tooth from cutting too much, causing problems such as tooth breakage or tooth pulling, and thus failing. When the second saw tooth wears down to a certain extent, the first saw tooth participates in the cutting. The first saw tooth is still very sharp, which helps to extend the cutting life of the band saw blade. Secondly, to ensure the synergistic effect between the first and second saw teeth, when the saw tooth group is offset, the torque angle of the second saw tooth in the band saw blade provided by this invention is specifically 2° to 6°. The torsion angle of the first saw tooth is 1° to 2° smaller than that of the second saw tooth. For the second saw tooth, this reduces the main cutting force while improving chip removal. For the first saw tooth, the smaller torsion angle provides better support. Therefore, compared with the prior art, the band saw blade in this embodiment can avoid problems such as excessive cut, tooth breakage, and tooth pulling when sawing steel bars, pipes, thin-walled parts, etc., under conditions of high vibration. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1A schematic diagram of the tooth profile of a band saw blade provided in an embodiment of the present invention;

[0036] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0037] Figure 3 A schematic diagram of the tooth pattern of a band saw blade provided in an embodiment of the present invention;

[0038] Figure 4 for Figure 3 Top view;

[0039] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0040] Figure 6 This is a schematic diagram of another structure of the tooth profile of the bimetal band saw blade provided in an embodiment of the present invention.

[0041] Reference numerals: 1. First serration; 2. Second serration; 3. First groove; 4. Fourth groove. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0044] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 application.

[0045] 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. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0046] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0047] The embodiments of this invention are written in a progressive manner.

[0048] It should be noted that for eccentric teeth (including left eccentric teeth and right eccentric teeth), the straight line where the saw tooth cutting edge is located will form an angle with the normal direction of the band saw blade's forward direction. This angle is called the torsion angle.

[0049] The twist angle of a band saw blade is a crucial factor affecting its cutting performance, specifically including:

[0050] (1) It helps to reduce the main cutting force: Due to the existence of the torsion angle, during the sawing process, the main cutting force (the main cutting force of sawing refers to the resistance parallel to the forward direction of the band saw blade) will form a normal component at the edge of the offset tooth, and the existence of this component force reduces the main cutting force.

[0051] (2) It helps to promote chip removal: The cutting method of sawing has the problem of chip removal. The chips from sawing are either stored in the tooth grooves until the saw teeth move to the outside of the workpiece, or discharged through the gap between the band saw blade and the kerf. The torsion angle can guide the saw chips (or chips) generated by the off-tooth cutting to move towards the gap between the band saw blade and the kerf, which is conducive to chip discharge and reduces the number of chips in the tooth grooves, thereby promoting chip removal.

[0052] like Figure 1 As shown, an embodiment of the present invention provides a band saw blade, comprising: a steel strip; and a tooth set, wherein at least two tooth sets are provided and arranged sequentially on one side of the steel strip. The tooth set includes a first tooth 1 and a second tooth 2. The distance from the tip of the first tooth 1 to the steel strip is less than the distance from the tip of the second tooth 2 to the steel strip. The twist angle γ2 of the second tooth 2 is specifically 2° to 6°. The twist angle γ1 of the first tooth 1 is 1° to 2° smaller than the twist angle γ2 of the second tooth 2.

[0053] In existing technologies, when dealing with band saw blades, the solution often involves reducing the back angle. Although reducing the back angle can effectively reduce the problems of tooth breakage and tooth pulling in band saw blades, the feed resistance will increase significantly after the back angle is reduced, resulting in problems such as skew cutting. This tooth shape is not suitable when high efficiency is required.

[0054] The band saw blade provided by this invention features a steel strip and a set of saw teeth. The saw teeth are located on one side of the steel strip, and there are at least two sets of saw teeth. The teeth in the same set have the same direction of division. Each set of saw teeth includes a first saw tooth 1 and a second saw tooth 2. The distance between the tip of the first saw tooth 1 and the steel strip is less than the distance between the tip of the second saw tooth 2 and the steel strip. There is a height difference between the first saw tooth 1 and the adjacent second saw tooth 2, so that there is a synergistic effect between the first saw tooth 1 and the second saw tooth 2. That is, when the band saw blade starts cutting, the second saw tooth 2 participates in the cutting first, and the first saw tooth 1 acts as a support tooth. When cutting thin-walled or irregularly shaped parts, the second saw tooth 2 is prevented from cutting too much, which could cause tooth breakage, tooth pulling, or failure. When the second saw tooth 2 is worn to a certain extent, the first saw tooth 1 participates in the cutting. The first saw tooth 1 remains sharp, which helps to extend the cutting life of the band saw blade. Secondly, to ensure the synergistic effect between the first saw tooth 1 and the second saw tooth 2, when the saw tooth group is offset, the torque angle γ2 of the second saw tooth 2 in the band saw blade provided by this invention is specifically 2° to 6°. The torsion angle γ1 of the first saw tooth 1 is 1° to 2° smaller than the torsion angle γ2 of the second saw tooth 2. For the second saw tooth 2, this reduces the main cutting force while improving chip removal. For the first saw tooth 1, the smaller torsion angle provides better support. Therefore, compared with the prior art, the band saw blade in this embodiment can avoid problems such as excessive cutting depth, tooth breakage, and tooth pulling when sawing steel bars, pipes, thin-walled parts, etc., under conditions of high vibration.

[0055] Furthermore, the band saw blade in this embodiment of the invention is specifically a toothed band saw blade. The present invention does not limit the tooth splitting form of the saw tooth group in the band saw blade, including: left saw tooth group and right saw tooth group arranged in sequence; left saw tooth group, right saw tooth group and non-splitting saw tooth group arranged in sequence; improved oblique tooth splitting; variable oblique tooth splitting and wave-shaped tooth splitting.

[0056] Please Figures 3 to 5 As shown, in the embodiments provided by the present invention, the tooth groove is a group of 4 teeth, and the split teeth are a group of 8 teeth. The split tooth sequence is: center-left-right-left-center-right-left-right. When the sawtooth group is a non-distributed tooth, the torsion angle γ1 of the first sawtooth 1 and the torsion angle γ2 of the second sawtooth 2 are both 0°.

[0057] Furthermore, as one embodiment, the number of saw teeth in the saw tooth group in the embodiments of the present invention is not limited, and when the saw tooth group is an off-center tooth, the saw teeth in the same saw tooth group have the same tooth splitting direction.

[0058] Furthermore, in this embodiment of the invention, the band saw blade is provided with a first tooth groove 3 and a second tooth groove 4, wherein the second saw tooth 2 forms the first tooth groove 3 between itself and its adjacent front saw tooth, and the first saw tooth 1 forms the second tooth groove 4 between itself and its adjacent front saw tooth, and the depth of the first tooth groove 3 is greater than the depth of the second tooth groove 4.

[0059] Since the second saw tooth 2 is mainly used for cutting, it produces large chips. The first saw tooth 1 is mainly used for support and auxiliary support, and it produces small chips. The forward direction of the front saw tooth is the direction in which the band saw blade moves forward. The second saw tooth 2 and its adjacent front saw tooth form a first tooth groove 3. The first tooth groove 3 is used to discharge the chips produced by the second saw tooth 2 during the cutting process. The first saw tooth 1 and its adjacent front saw tooth form a second tooth groove 4. The second tooth groove 4 is used to discharge the chips produced by the first saw tooth 1 during the cutting process.

[0060] Furthermore, the band saw blade in this embodiment of the invention can be applied to single-metal band saw blades or bimetal band saw blades.

[0061] Please Figure 6 As shown, in one preferred embodiment, when the band saw blade of this invention is used in a bimetal band saw blade, the bimetal band saw blade refers to a blade where the saw teeth and the steel strip are made of two different materials, and the saw teeth and the steel strip are connected by welding. To ensure the welding strength between the saw teeth and the steel strip, as one specific embodiment, please refer to... Figure 6 As shown, in this embodiment of the invention, the depth h2 of the second tooth groove is less than the vertical height h3 from the tip of the first tooth to the outer surface of the steel strip. Thus, the second tooth groove will not break the weld between the steel strip and the sawtooth assembly, resulting in higher weld strength between the steel strip and the sawtooth assembly.

[0062] More specifically, in the embodiments of the present invention, the steel strip is made of spring steel and the saw teeth are made of high-speed steel.

[0063] In the above structure, as one embodiment, the height difference δ between the tips of adjacent first saw teeth 1 and second saw teeth 2 and the steel strip is specifically 0.05mm to 0.30mm.

[0064] Specifically, by setting the height difference δ between the tips of the first saw tooth 1 and the second saw tooth 2 and the steel strip, when the tip of the second saw tooth 2 wears to a certain extent, the first saw tooth 1 can participate in the cutting process. At this time, the first saw tooth 1 is a new saw tooth, which helps to extend the sawing life. If the height difference between the tips of the first saw tooth 1 and the second saw tooth 2 and the steel strip is too large, the second saw tooth 2 has already worn to failure, and the first saw tooth 1 has not yet participated in the cutting, thus failing to extend the sawing life.

[0065] In the above structure, as one embodiment, the materials such as structural steel, reinforcing bars and pipe fittings are mostly made of carbon steel, especially low carbon steel such as Q235 and Q345. In order to better saw the carbon steel materials, as one embodiment, the front angle α2 of the second saw tooth 2 in this invention embodiment is specifically 3° to 8°, and the front angle α1 of the first saw tooth 1 is specifically 0° to 3°, which results in a better sawing effect.

[0066] In the above structure, as a more preferred embodiment, the difference in the front angle between the second sawtooth 2 and the first sawtooth 1 is not less than 3°.

[0067] More specifically, the second saw tooth 2 is mainly used for sawing, the first saw tooth 1 is used for support and auxiliary support, the rake angle α2 of the second saw tooth 2 is greater than the rake angle α1 of the first saw tooth 1, and the difference between the rake angles of the second saw tooth 2 and the first saw tooth 1 is not less than 3°.

[0068] In the above structure, as one embodiment, the back angle β of the saw teeth in the band saw blade in this embodiment is 25 to 35°.

[0069] In the above structure, as one embodiment, the distance between the tip of the first saw tooth 1 and the tip of the second saw tooth 2 in the same saw tooth group is P2, and the distance between the tip of the second saw tooth 2 and the tip of the first saw tooth 1 in the adjacent saw tooth group is P1, wherein P2 is less than P1.

[0070] Specifically, the first saw tooth 1 has two functions: firstly, it participates in auxiliary cutting after the second saw tooth wears down; secondly, it provides support before the second saw tooth wears down, i.e., it prevents the second saw tooth from cutting too deeply. If P2 is too large, the distance between the first and second saw teeth will be too large, and it will not be able to provide support. Therefore, limiting P2 to less than P1 can satisfy both the auxiliary cutting effect and the support function.

[0071] Furthermore, as one embodiment, the distance between the tips of adjacent second saw teeth 2 in this embodiment of the invention is P, where P = P1 + P2.

[0072] Specifically, the saw blade tooth pitch P is the distance between the tips of two adjacent second saw teeth 2. If the saw blade tooth pitch P is a fixed value, the band saw blade has an equal tooth pitch. If the saw blade tooth pitch P changes with the position of the selected second saw tooth 2, the band saw blade has a variable tooth pitch. The band saw blade provided in this embodiment can be an equal tooth pitch band saw blade or a variable tooth pitch band saw blade.

[0073] The present invention also provides a processing method for use in any of the band saw blades described above, the method comprising the following steps:

[0074] S1. The steel strip is subjected to tooth forming treatment;

[0075] For ease of description, in this embodiment of the invention, bimetallic composite steel strip is used as the raw material. A gear hobbing cutter is used to process the high-speed steel side of the bimetallic composite steel strip into the desired serrated shape through a tooth-cleaving method. This embodiment of the invention does not limit the process for forming the teeth of the steel strip; this processing method can also employ milling, grinding, punching, or other CNC forming methods, such as laser cutting or wire cutting.

[0076] S2. The teeth after forming are divided into teeth. The teeth in the same tooth group are divided in the same direction, and the teeth in the same tooth group are processed at the same time.

[0077] In existing technologies, saw teeth are often individually segmented. However, because the first saw tooth 1 and the second saw tooth 2 within the same saw tooth group in the band saw blade provided by this invention have a synergistic effect, individual segmentation may introduce segmentation tolerances during band saw blade processing. If there are synergistic requirements between adjacent saw teeth (high teeth and low teeth), such as differences in the amount of tooth segmentation or the torsion angle, single-tooth segmentation will result in significant discrepancies between the actual and designed differences due to processing errors, weakening the synergistic effect between the first saw tooth 1 and the second saw tooth 2. To avoid this problem, when segmenting the formed teeth, the segmentation direction within the same saw tooth group is the same, and the saw teeth within the same saw tooth group are processed simultaneously. That is, during segmentation, the entire saw tooth group is struck, with the first saw tooth 1 and the second saw tooth 2 processed simultaneously. Even with processing errors, the differences in the amount of tooth segmentation and the torsion angle between the second saw tooth 2 and the first saw tooth 1 are estimated and will not change due to processing errors, resulting in a longer band saw blade life.

[0078] S3. Clean the steel strip after tooth splitting;

[0079] S4. Heat treat the cleaned steel strip.

[0080] Specifically, the heat treatment in the processing method of this embodiment includes the following steps: quenching the band saw blade; and tempering the band saw blade three or more times.

[0081] S5. Sandblast the heat-treated steel strip.

[0082] Furthermore, as one embodiment, in the processing method of this invention, a first tooth groove 3 is provided between adjacent sawtooth groups, and a second tooth groove 4 is provided between the first sawtooth 1 and the second sawtooth 2 in the same sawtooth group. The depth h1 of the first tooth groove 3 is greater than the depth h2 of the second tooth groove 4. In step S2, when the formed tooth is divided, the tooth division height hs between the position of the striking sawtooth of the tooth dividing mold and the tip of the second tooth pitch is greater than h1 and less than h2.

[0083] Specifically, when the first saw tooth 1 and the second saw tooth 2 are individually separated, the position of the tooth-separating die is on the side of the second tooth groove 4 away from the steel strip. Currently, each saw tooth is separated individually in this way. However, the tooth-separating tolerance generated during the band saw blade processing weakens the synergistic effect between the first saw tooth 1 and the second saw tooth 2. The processing method in this embodiment of the invention processes the first saw tooth 1 and the second saw tooth 2 within a saw tooth group simultaneously during tooth separation. Specifically, the height between the position where the tooth-separating die strikes the saw tooth and the tip of the second saw tooth 2 is hs, where hs is greater than h1 and less than h2. That is, the striking position of the tooth-separating die is located between the first tooth groove 3 and the second tooth groove 4. Thus, the second saw tooth 2 and the first saw tooth 1 are processed simultaneously. Even with processing errors, the differences in tooth separation amount and torsion angle between the second saw tooth 2 and the first saw tooth 1 are estimated and will not change due to processing errors.

[0084] Furthermore, in the above method, in the processing method of the present invention embodiment, if the straightness of the heat-treated steel strip does not reach the preset straightness, the method further includes the following step: adjusting the heat-treated steel strip by rolling straightening.

[0085] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A band saw blade, characterized in that, include: steel strip; A saw tooth group is provided on one side of the steel strip, and at least two saw tooth groups are provided, with the saw teeth in the same saw tooth group having the same tooth direction. in, The saw tooth assembly includes a first saw tooth and a second saw tooth, wherein the height from the tip of the first saw tooth to the steel strip is less than the height from the tip of the second saw tooth to the steel strip. When the saw teeth are eccentric, the twist angle of the second saw tooth is specifically 2°~6°, and the twist angle of the first saw tooth is 1°~2° smaller than the twist angle of the second saw tooth; The rake angle α2 of the second saw tooth is greater than the rake angle α1 of the first saw tooth.

2. The band saw blade according to claim 1, characterized in that, There is a first tooth groove between the second saw tooth and its adjacent front saw tooth, and a second tooth groove is provided between the first saw tooth and the front saw tooth adjacent to the first saw tooth; The depth of the first tooth groove is greater than the depth of the second tooth groove.

3. The band saw blade according to claim 2, characterized in that, The depth of the second tooth groove is less than the vertical height from the tip of the first saw tooth to the outer surface of the steel strip.

4. The band saw blade according to any one of claims 1 to 3, characterized in that, The height difference between the tips of adjacent first and second saw teeth and the steel strip is specifically 0.05mm to 0.30mm.

5. The band saw blade according to any one of claims 1 to 3, characterized in that, The rake angle of the second saw tooth is specifically 3°~8°, and the rake angle of the first saw tooth is specifically 0°~3°.

6. The band saw blade according to claim 5, characterized in that, The second saw tooth has a 3° smaller rake angle than the first saw tooth.

7. The band saw blade according to any one of claims 1 to 3 and 6, characterized in that, The distance between the tips of the first and second teeth within the same sawtooth group is P2; The distance between the tip of the second saw tooth and the tip of the first saw tooth in the adjacent saw tooth group is P1; Among them, P2 is less than P1.

8. The band saw blade according to claim 7, characterized in that, The distance between the tips of adjacent second saw teeth is P; Where P = P1 + P2.

9. A processing method, characterized in that, For use in a band saw blade as described in any one of claims 1 to 8, the method comprises the following steps: S1. The steel strip is subjected to tooth forming treatment; S2. The teeth after forming are divided into teeth. The teeth of adjacent saw teeth groups are divided in opposite directions, the teeth of the same saw teeth group are divided in the same direction, and the saw teeth of the same saw teeth group are processed at the same time. S3. Clean the steel strip after tooth splitting; S4. Heat treat the cleaned steel strip. S5. Sandblast the heat-treated steel strip. S6. If the straightness of the heat-treated steel strip does not reach the preset straightness, the method further includes the following step: adjusting the heat-treated steel strip by rolling straightening.

10. The processing method according to claim 9, characterized in that, A first tooth groove is provided between adjacent sawtooth groups, and a second tooth groove is provided between the first sawtooth and the second sawtooth in the same sawtooth group. The depth h1 of the first tooth groove is greater than the depth h2 of the second tooth groove. In step S2, when the formed teeth are divided, the tooth division height hs between the position of the striking saw teeth of the tooth dividing mold and the tooth tip of the second tooth pitch is greater than h1 and less than h2.

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