Saw blade for machining hard and mixed wood

Abstract

The application discloses a saw blade for processing hard and miscellaneous wood, which comprises a saw blade body, a plurality of cutter head groups arranged circumferentially on the saw blade body, and an inclined cutter head and a bottom cleaning cutter head in each cutter head group, wherein the inclined cutter head comprises an offset high angle and an offset low angle. The inclined cutter head and the bottom cleaning cutter head are arranged, so that a smooth cutting surface can be generated by the inclined cutter head during cutting, and the middle area that cannot be cut by the inclined cutter head can be effectively cleaned and cut by the bottom cleaning cutter head. In addition, the shapes of the cutter heads in each cutter head group are different, so that the cutter heads stagger in working state, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of saw blade technology, and more particularly to a saw blade for processing hardwood. Background Technology

[0002] In the field of hardwood processing, conventional cutting tools have rough cutting surfaces, short processing life, and low efficiency. For example, publication number "CN220006219U" discloses a "thin carbide saw blade with a boss," which includes a base and a spacer. The outer edge of the base has several cutting heads and several equally spaced expansion joints. The spacer is connected to the base through several equally spaced inner and outer ring weld points. The base has several circumferentially spaced air holes, and the spacer has several circumferentially spaced air holes. The diameter and number of the base air holes are the same as those of the spacer air holes, and the base air holes are spaced apart from the spacer air holes in the circumferential direction. However, in practical applications, because all the cutting heads use the same cutting head setting, the cutting surface is rough during the cutting process, and the heat dissipation efficiency is low. Summary of the Invention

[0003] In view of the problems of rough cutting surface and low heat dissipation efficiency in the prior art mentioned in the background, the present invention provides a saw blade for processing hardwoods, which can ensure a smooth cutting surface and improve heat dissipation efficiency, thereby ensuring cutting quality.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] A saw blade for processing hardwood includes a saw blade body with a plurality of circumferentially arranged cutter head groups. Each cutter head group includes a tilting cutter head and a bottom-cleaning cutter head. The tilting cutter head includes an offset high angle and an offset low angle. By incorporating the tilting cutter head and the bottom-cleaning cutter head, a smooth cutting surface can be produced during cutting, while the bottom-cleaning cutter head can effectively clean and cut the intermediate areas that the tilting cutter head cannot reach. Furthermore, since the cutter heads in each group have different shapes, the staggered operation of the cutter heads improves heat dissipation efficiency.

[0006] Preferably, the tilting cutter head includes a left-tilting cutter head and a right-tilting cutter head, both of which are provided in the same cutter head group. By providing left-tilting and right-tilting cutter heads, a smooth cutting effect can be achieved on both the left and right cutting surfaces.

[0007] Preferably, in the same cutter head group, the left-tilting cutter head and the right-tilting cutter head are arranged adjacent to each other. Arranging the left-tilting and right-tilting cutter heads adjacent to each other ensures the uniformity and smoothness of the cutting, allowing the subsequent cleaning cutter head to simultaneously clean the uncut areas of both the left-tilting and right-tilting cutter heads.

[0008] Preferably, the offset high-position angle has an offset distance T between it and the saw blade body along the axial direction. Setting the offset high-position angle to have an offset gap with the saw blade body prevents the saw blade body from participating in friction during the cutting process, improving the smoothness of the cutting and protecting the saw blade body.

[0009] Preferably, the tilting cutter head includes an inclined surface positioned near the side with the offset high angle, the offset angle of which is γ, 0.5°≤γ≤1°. Setting the offset angle of the inclined surface to γ ​​ensures that cutting is primarily performed by offsetting the high angle during the cutting process, guaranteeing the sharpness of the cut while reducing contact between the side and the object being cut, thus improving the smoothness of the cut.

[0010] Preferably, the inclined cutter head includes an inclined cutter head root, the inclined cutter head root includes a high-position side root located near the side of the offset high angle, the inclined cutter head root includes a low-position side root located near the side of the offset low angle, the high-position side root has an offset distance T1 between it and the saw blade body, the low-position side root has an offset distance T2 between it and the saw blade body, and T2 < T1.

[0011] Preferably, the tilting cutter head includes a vertical plane disposed near the side of the offset low angle.

[0012] Preferably, the bottom cleaning cutter head includes a plurality of toothed cutter heads, each with a plurality of cleaning teeth arranged at intervals. The cleaning teeth on adjacent toothed cutter heads within the same cutter head group are staggered. Each toothed cutter head has a groove top edge, on which the cleaning teeth are located. Within the same cutter head group, the groove depth of each groove top edge decreases sequentially along the direction away from the inclined cutter head. The toothed cutter head ensures a certain cleaning efficiency and heat dissipation, while also allowing smooth passage through the object being cut, avoiding significant resistance during the process. Therefore, in this embodiment, the bottom cleaning cutter head is configured as a toothed cutter head, with the cleaning teeth arranged at intervals, increasing the heat dissipation space. Because there are gaps between the cleaning teeth, the adhesion of debris to the toothed cutter head is increased. The top of the bottom-cleaning cutter head has a grooved top edge. After the object is cut by the left-tilting cutter head and the right-tilting cutter head, a raised uncut area will be formed in the middle area. Therefore, the grooved top of the bottom-cleaning cutter head can correspond to the uncut raised area, avoiding uneven force on the toothed cutter head. The grooved top edge of the toothed cutter head has different groove depths, with the grooves further away from the tilting cutter head being shallower. This allows the toothed cutter head further away from the tilting cutter head to cut deeper, thereby improving cutting efficiency and ensuring that the force on each toothed cutter head is uniform.

[0013] Preferably, there is an offset tilt angle β between the offset high position angle and the offset low position angle, where 5°≤γ≤15°.

[0014] Preferably, there is an offset distance T3 between the side of the bottom cleaning head and the saw blade body, where 0≤T3≤0.05mm.

[0015] The bottom-cleaning cutter head includes a machining top edge, which is located between the offset high angle and the offset low angle. By setting the machining top edge between the offset high angle and the offset low angle, it is possible to clean areas that cannot be cleaned at the offset high angle, which helps with chip removal, while not affecting subsequent cutting at the offset high angle and without producing excessive obstruction.

[0016] The beneficial effects of this invention are as follows:

[0017] (1) It can ensure the flatness and smoothness of the cut surface and improve heat dissipation efficiency, thereby ensuring the cutting quality;

[0018] (2) It can improve the bottom cleaning effect during the cutting process, improve the adhesion of debris on the bottom cleaning blade, and at the same time ensure the smoothness and uniformity of the cutting, and ensure that the wear of each cleaning tooth is equal. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 yes Figure 1 A schematic diagram of the inclined cutter head.

[0021] Figure 3 yes Figure 1 A schematic diagram showing the angled cutter head.

[0022] Figure 4 yes Figure 1 A schematic diagram of the bottom cleaning cutter head.

[0023] Figure 5 This is an isometric view of Example 2.

[0024] Figure 6 This is a front view of Example 2.

[0025] Figure 7 This is a schematic diagram of the cutting process in Example 2.

[0026] In the picture:

[0027] 1. Saw blade body;

[0028] 2-blade assembly;

[0029] 3 Inclined cutter head, 31 Offset high angle, 32 Offset low angle, 33 Left-tilted cutter head, 34 Right-tilted cutter head, 35 Inclined surface, 36 Root of inclined cutter head, 361 High side root, 362 Low side root, 37 Vertical plane;

[0030] 4. Bottom cleaning cutter head; 41. Tooth opening cutter head; 411. Tooth opening cleaning; 412. Groove top edge; 42. Top edge machining. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1:

[0033] like Figure 1 , 2 As shown, a saw blade for processing hardwood includes a saw blade body 1, on which a plurality of circumferentially arranged cutter head groups 2 are provided. Each cutter head group 2 includes an inclined cutter head 3 and a bottom-cleaning cutter head 4. The inclined cutter head 3 includes an offset high angle 31 and an offset low angle 32. By setting the inclined cutter head 3 and the bottom-cleaning cutter head 4, a smooth cutting surface can be generated by the inclined cutter head 3 during the cutting process, while the bottom-cleaning cutter head 4 can effectively clean and cut the middle area that the inclined cutter head 3 cannot cut. Furthermore, since the cutter heads in each cutter head group 2 have different shapes, the cutter heads work in an alternating manner, improving heat dissipation efficiency.

[0034] like Figure 1 As shown, the tilting cutter head 3 includes a left-tilting cutter head 33 and a right-tilting cutter head 34, both of which are provided in the same cutter head group 2. By setting the tilting cutter head 3 with the left-tilting cutter head 33 and the right-tilting cutter head 34, a smooth cutting effect can be formed on both the left and right cutting surfaces.

[0035] like Figure 1 As shown, in the same cutter head group 2, the left-tilting cutter head 33 and the right-tilting cutter head 34 are arranged adjacent to each other. Arranging the left-tilting cutter head 33 and the right-tilting cutter head 34 adjacently ensures the uniformity and smoothness of the cutting, so that the subsequent bottom-cleaning cutter head 4 can simultaneously clean the uncut areas of the left-tilting cutter head 33 and the right-tilting cutter head 34.

[0036] like Figure 3 As shown, the offset high position angle 31 has an offset distance T between it and the saw blade body 1 along the axial direction. Setting the offset high position angle 31 to have an offset gap with the saw blade body 1 prevents the saw blade body 1 from participating in friction during the cutting process, improving the smoothness of the cutting and protecting the saw blade body 1.

[0037] like Figure 3As shown, the tilting cutter head 3 includes an inclined surface 35 located near the offset high angle 31. The offset angle of the inclined surface 35 is γ, where 0.5°≤γ≤1°. Setting the offset angle of the inclined surface 35 to γ ​​ensures that cutting is primarily performed using the offset high angle 31, guaranteeing the sharpness of the cut while reducing contact between the side and the object being cut, thus improving the smoothness of the cut. In this embodiment, the height of the offset high angle 31 of the tilting cutter head 3 is L, where T1=TL*tanγ.

[0038] like Figure 2 , 3 As shown, the inclined cutter head 3 includes an inclined cutter head root 36, the inclined cutter head root 36 includes a high-position side root 361 located near the offset high angle 31, and the inclined cutter head root 36 includes a low-position side root 362 located near the offset low angle 32. There is an offset distance T1 between the high-position side root 361 and the saw blade body 1, and there is an offset distance T2 between the low-position side root 362 and the saw blade body 1, where T2 < T1.

[0039] like Figure 2 As shown, the tilting cutter head 3 includes a vertical plane 37 disposed near the side of the offset low angle 32.

[0040] like Figure 3 As shown, there is an offset tilt angle β between the offset high position angle 31 and the offset low position angle 32, where 5°≤γ≤15°.

[0041] like Figure 4 As shown, there is an offset distance between the side of the bottom-cleaning cutter head 4 and the saw blade body 1. T3 , 0≤T3≤0.05mm.

[0042] like Figure 4 As shown, the bottom-cleaning cutter head includes a machining top edge 42, which is located between the offset high angle and the offset low angle. By setting the machining top edge between the offset high angle and the offset low angle, it is possible to clean the area that cannot be cleaned at the offset high angle, which helps with chip removal, while not affecting the subsequent cutting at the offset high angle and without producing excessive obstruction.

[0043] The assembly and operation process of the saw blade for processing hardwood in this embodiment is as follows: In this embodiment, a number of cutter head groups 2 are provided on the saw blade body 1, wherein each cutter head group 2 includes multiple cutter heads. In this embodiment, there are inclined cutter heads 3 and bottom-cleaning cutter heads 4. Further, in this embodiment, the inclined cutter head 3 includes a left-inclined cutter head 33 and a right-inclined cutter head 34, wherein the left-inclined cutter head 33 and the right-inclined cutter head 34 are arranged adjacent to each other. In the same cutter head group 2, the left-inclined cutter head 33 and the right-inclined cutter head 34 are arranged in sequence, and then the bottom-cleaning cutter head 4 is arranged. That is, in the cutting process, the object is first cut by the left-inclined cutter head 33 and the right-inclined cutter head 34 before the bottom-cleaning cutter head 4 comes into contact with the object. The bottom cleaning head 4 can clean the area after the left-tilting head 33 and the right-tilting head 34 have finished cutting, including removing debris. It can also process the middle part that the left-tilting head 33 and the right-tilting head 34 cannot reach, thereby ensuring efficient cutting of the object. At the same time, since the left-tilting head 33 and the right-tilting head 34 can ensure a smooth and flat cutting surface, the cutting tool in this embodiment can improve the smoothness of the cutting surface while ensuring cutting efficiency.

[0044] Furthermore, in this embodiment, the tilting directions of the left-tilting cutter head 33 and the right-tilting cutter head 34 are different, but both are provided with an offset high angle 31 and an offset low angle 32. The offset high angle 31 of the left-tilting cutter head 33 is set closer to the left side, while the offset high angle of the right-tilting cutter head 34 is set closer to the right side. Therefore, during use, the left-tilting cutter head 33 mainly cuts the left side of the object being cut, while the right-tilting cutter head 34 mainly cuts the right side of the object being cut. In this embodiment, since the tilting cutter head 3 has an offset high angle 31 and an offset low angle 32, there is a height difference between the offset high angle 31 and the offset low angle. This results in the main cutting point of the left-tilting cutter head 33 being on the left offset high angle 31, and the main cutting point of the right-tilting cutter head 34 being on the right offset high angle 31. Due to the sharp angle structure of the offset high angle 31, a relatively sharp cut can be produced during the cutting process, thereby forming a smooth cutting surface.

[0045] Furthermore, in this embodiment, the offset high position angle 31 of the tilting cutter head 3 is located at the leftmost or rightmost position of the entire cutter head, wherein there is an offset distance T between the offset high position angle 31 and the saw blade body 1, thereby enabling the offset high position angle 31 to fully cut the object being cut. The tilting cutter head 3 includes a beveled cutter head root 36, which is the area located at the bottom of the tilting cutter head 3. The beveled cutter head root 36 is divided into a high-position side root 361 and a low-position side root 362. Further, the high-position side root 361 is located on the side close to the offset high position angle 31, while the low-position side root 362 is located on the side close to the offset low position angle 32. In this embodiment, the high-side root 361 and the low-side root 362 are offset by distances T1 and T2 from the saw blade body 1, respectively, and T2 < T1, while T1 < T. Thus, in this embodiment, the distances from the saw blade body 1 from largest to smallest are: offset high angle 31, high-side root 361, and low-side root 362. Since the plane of the tilting head 3 near the offset low angle 32 is a vertical plane 37, the offset low angle 32 and the low-side root 362 are on the same vertical line. Therefore, the offset low angle 32 and the low-side root 362 are the same distance from the saw blade body 1.

[0046] Therefore, in this embodiment, since T1 < T, during the cutting process, the tilting cutter head 3 only controls the offset high angle 31 to contact the object being cut, thereby ensuring the smoothness of the cutting. Furthermore, it avoids the inclined surface between the offset high angle 31 and the high side root 361 from contacting the cutting surface, thereby improving heat dissipation efficiency and avoiding any impact on the cut surface after cutting. At the same time, it can reduce the resistance generated during the rotation of the saw blade. Since both T1 and T are greater than 0, the saw blade body 1 will not generate friction during the cutting process, ensuring the smoothness of the cutting.

[0047] Furthermore, in this embodiment, there is an inclination angle β between the offset high angle 31 and the offset low angle 32, which also enables the cutting part of the tilted cutter head 3 to be located on the offset high angle 31, ensuring the smoothness of the cutting while ensuring the sharpness of the cutting at the offset high angle 31.

[0048] Since both the left-tilting cutter head 33 and the right-tilting cutter head 34 have offset high angle 31 and offset low angle 32, after the object is cut by offset high angle 31 and offset low angle 32, there will be a blind zone in the middle area that cannot be cut. Therefore, a bottom-cleaning cutter head 4 is set in the cutter head group 2 to clean and cut this area, reducing the cutting resistance of the left-tilting cutter head 33 and the right-tilting cutter head 34 in the subsequent cutting process. At the same time, in order not to affect the cutting effect of offset high angle 31, the height of the bottom-cleaning cutter head 4 is set to be less than the height of offset high angle 31 in the tilting cutter head 3, and the height of the bottom-cleaning cutter head 4 is also greater than the height of offset low angle 32 in the tilting cutter head 3. That is, the position of the processed top edge is between offset high angle and offset low angle. Moreover, both sides of the bottom-cleaning cutter head 4 are vertical planes 37, and the left and right sides only extend 10 to 0.05 mm beyond the saw blade body.

[0049] Example 2:

[0050] like Figure 5 , 6 As shown in Figure 7, unlike Embodiment 1, the bottom cleaning head 4 in this embodiment includes a plurality of toothed heads 41. Each toothed head 41 has a plurality of cleaning teeth 411 arranged at intervals. The cleaning teeth 411 on adjacent toothed heads 41 within the same head group 2 are staggered. Each toothed head 41 has a groove top edge 412, and the cleaning teeth 411 are located on the groove top edge 412. Along the direction away from the inclined head 3 within the same head group 2, the groove depth of each groove top edge 412 decreases sequentially. The toothed heads 41 on the bottom cleaning head 4 ensure a certain cleaning efficiency and heat dissipation, while also allowing smooth passage through the object being cut, avoiding significant resistance during the process. Therefore, in this embodiment, the bottom cleaning head 4 is configured as a toothed head 41, with the cleaning teeth 411 arranged at intervals, increasing the heat dissipation space. Because there are gaps between the cleaning teeth 411, the adhesion of debris to the toothed heads 41 is increased. A groove top edge 412 is provided on the top of the bottom cleaning cutter head 4. Since the object being cut will form a raised uncut area in the middle area after being cut by the left tilting cutter head 33 and the right tilting cutter head 34, the groove top of the bottom cleaning cutter head 4 can correspond to the uncut raised area, so as to avoid uneven force on the toothed cutter head 41. The groove top edge 412 of the toothed cutter head 41 has different groove depths. The groove depth is shallower on the side farther away from the tilting cutter head 3, so that the toothed cutter head 41 away from the tilting cutter head 3 can cut deeper, thereby improving the cutting efficiency and ensuring that the force on each toothed cutter head 41 is also uniform.

[0051] The assembly and operation process of the saw blade for processing hardwood in this embodiment is as follows: In this embodiment, a toothed cutter head 41 is provided on the bottom cleaning cutter head 4. Since the main cutting part in this embodiment is offset at a high position angle 31, the main cutting cutter head is the inclined cutter head 3, while the bottom cleaning cutter head 4 can clean the debris and the middle area after cutting. It is necessary to ensure a certain cleaning efficiency and heat dissipation effect, and at the same time, it is necessary to ensure that it can pass smoothly through the object being cut, and avoid generating a large resistance force during the process. Therefore, in this embodiment, the bottom cleaning cutter head 4 is configured as a toothed cutter head 41. Furthermore, the toothed cutter head 41 in this embodiment is provided with a plurality of cleaning teeth 411, which are arranged at intervals. Therefore, there are gaps between each cleaning tooth 411, which increases the heat dissipation space and improves the passability when passing through the object being cut, reducing the cutting resistance. At the same time, since there are gaps between each cleaning tooth 411, the adhesion of debris on the toothed cutter head 41 is increased, which facilitates the discharge of debris in the middle area. The cleaning teeth 411 on adjacent toothed cutter heads 41 are staggered, which can ensure the complete cutting of the object being cut and avoid omissions. At the same time, it can reduce the cutting pressure of each toothed cutter head 41, thereby offsetting the reduction in structural strength caused by the setting of cleaning teeth 411.

[0052] Furthermore, in this embodiment, a groove top edge 412 is provided on the top of the bottom cleaning cutter head 4. Since the object being cut will form a raised uncut area in the middle region after being cut by the left tilting cutter head 33 and the right tilting cutter head 34, the groove top of the bottom cleaning cutter head 4 can correspond to the uncut raised area, avoiding uneven force on the toothed cutter head 41 and ensuring that each cleaning tooth 411 is evenly stressed, thereby ensuring the structural life. At the same time, since the groove top edge 412 is provided, it is possible to control the toothed cutter head 41 to contact the object being cut only through the cleaning teeth 411 during the cutting process.

[0053] Furthermore, in this embodiment, the groove depths of the groove top edge 412 of adjacent toothed cutter heads 41 are different, with the groove depth being shallower on the side farther from the inclined cutter head 3. This allows the toothed cutter heads 41 farther from the inclined cutter head 3 to cut deeper, thereby improving cutting efficiency and ensuring that the force on each toothed cutter head 41 is uniform.

[0054] In this embodiment, a plurality of cutter head groups 2 are provided on the saw blade body 1, wherein each cutter head group 2 includes multiple cutters. In this embodiment, the cutters include tilting cutters 3 and bottom-cleaning cutters 4. Further, in this embodiment, the tilting cutter head 3 includes a left-tilting cutter head 33 and a right-tilting cutter head 34, wherein the left-tilting cutter head 33 and the right-tilting cutter head 34 are arranged adjacent to each other. In the same cutter head group 2, the left-tilting cutter head 33 and the right-tilting cutter head 34 are arranged in sequence, and then the bottom-cleaning cutter head 4 is arranged. That is, in the cutting process, the object is first cut by the left-tilting cutter head 33 and the right-tilting cutter head 34 before the bottom-cleaning cutter head 4 comes into contact with the object. The bottom cleaning head 4 can clean the area after the left-tilting head 33 and the right-tilting head 34 have finished cutting, including removing debris. It can also process the middle part that the left-tilting head 33 and the right-tilting head 34 cannot reach, thereby ensuring efficient cutting of the object. At the same time, since the left-tilting head 33 and the right-tilting head 34 can ensure a smooth and flat cutting surface, the cutting tool in this embodiment can improve the smoothness of the cutting surface while ensuring cutting efficiency.

[0055] Furthermore, in this embodiment, the tilting directions of the left-tilting cutter head 33 and the right-tilting cutter head 34 are different, but both are provided with an offset high angle 31 and an offset low angle 32. The offset high angle 31 of the left-tilting cutter head 33 is set closer to the left side, while the offset high angle of the right-tilting cutter head 34 is set closer to the right side. Therefore, during use, the left-tilting cutter head 33 mainly cuts the left side of the object being cut, while the right-tilting cutter head 34 mainly cuts the right side of the object being cut. In this embodiment, since the tilting cutter head 3 has an offset high angle 31 and an offset low angle 32, there is a height difference between the offset high angle 31 and the offset low angle. This results in the main cutting point of the left-tilting cutter head 33 being on the left offset high angle 31, and the main cutting point of the right-tilting cutter head 34 being on the right offset high angle 31. Due to the sharp angle structure of the offset high angle 31, a relatively sharp cut can be produced during the cutting process, thereby forming a smooth cutting surface.

[0056] Furthermore, in this embodiment, the offset high position angle 31 of the tilting cutter head 3 is located at the leftmost or rightmost position of the entire cutter head, wherein there is an offset distance T between the offset high position angle 31 and the saw blade body 1, thereby enabling the offset high position angle 31 to fully cut the object being cut. The tilting cutter head 3 includes a beveled cutter head root 36, which is the area located at the bottom of the tilting cutter head 3. The beveled cutter head root 36 is divided into a high-position side root 361 and a low-position side root 362. Further, the high-position side root 361 is located on the side close to the offset high position angle 31, while the low-position side root 362 is located on the side close to the offset low position angle 32. In this embodiment, the high-side root 361 and the low-side root 362 are offset by distances T1 and T2 from the saw blade body 1, respectively, and T2 < T1, while T1 < T. Thus, in this embodiment, the distances from the saw blade body 1 from largest to smallest are: offset high angle 31, high-side root 361, and low-side root 362. Since the plane of the tilting head 3 near the offset low angle 32 is a vertical plane 37, the offset low angle 32 and the low-side root 362 are on the same vertical line. Therefore, the offset low angle 32 and the low-side root 362 are the same distance from the saw blade body 1.

[0057] Therefore, in this embodiment, since T1 < T, during the cutting process, the tilting cutter head 3 only controls the offset high angle 31 to contact the object being cut, thereby ensuring the smoothness of the cutting. Furthermore, it avoids the inclined surface between the offset high angle 31 and the high side root 361 from contacting the cutting surface, thereby improving heat dissipation efficiency and avoiding any impact on the cut surface after cutting. At the same time, it can reduce the resistance generated during the rotation of the saw blade. Since both T1 and T are greater than 0, the saw blade body 1 will not generate friction during the cutting process, ensuring the smoothness of the cutting.

[0058] Furthermore, in this embodiment, there is an inclination angle β between the offset high angle 31 and the offset low angle 32, which also enables the cutting part of the tilted cutter head 3 to be located on the offset high angle 31, ensuring the smoothness of the cutting while ensuring the sharpness of the cutting at the offset high angle 31.

[0059] Since both the left-tilting cutter head 33 and the right-tilting cutter head 34 have offset high angle 31 and offset low angle 32, after the object is cut by offset high angle 31 and offset low angle 32, there will be a blind zone in the middle area that cannot be cut. Therefore, a bottom-cleaning cutter head 4 is set in the cutter head group 2 to clean and cut this area, reducing the cutting resistance of the left-tilting cutter head 33 and the right-tilting cutter head 34 in the subsequent cutting process. At the same time, in order not to affect the cutting effect of offset high angle 31, the height of the bottom-cleaning cutter head 4 is set to be less than the height of offset high angle 31 in the tilting cutter head 3, and the height of the bottom-cleaning cutter head 4 is also greater than the height of offset low angle 32 in the tilting cutter head 3. Moreover, both sides of the bottom-cleaning cutter head 4 are vertical planes 37, and the left and right sides only extend 10 to 0.05 mm beyond the saw blade body.

Claims

1. A saw blade for processing hardwood, characterized in that, The saw blade includes a saw blade body, on which are arranged a plurality of circumferentially arranged cutter head groups. Each cutter head group includes an inclined cutter head and a bottom cleaning cutter head. The inclined cutter head includes an offset high angle and an offset low angle. The bottom cleaning cutter head includes a plurality of toothed cutter heads, each toothed cutter head having a plurality of cleaning teeth arranged at intervals. The cleaning teeth on adjacent toothed cutter heads within the same cutter head group are staggered. Each toothed cutter head has a groove top edge, and the cleaning teeth are located on the groove top edge. In the same cutter head group, along the direction away from the inclined cutter head, the groove depth of each groove top edge decreases sequentially.

2. The saw blade for processing hardwood according to claim 1, characterized in that, The tilting cutter head includes a left-tilting cutter head and a right-tilting cutter head, and both the left-tilting cutter head and the right-tilting cutter head are provided in the same cutter head group.

3. A saw blade for processing hardwoods according to claim 2, characterized in that, In the same cutter head group, the left-tilting cutter head and the right-tilting cutter head are arranged adjacent to each other.

4. A saw blade for processing hardwoods according to claim 1, characterized in that, The offset high position angle has an offset distance T between it and the saw blade body along the axial direction.

5. A saw blade for processing hardwoods according to claim 1, characterized in that, The tilting cutter head includes a tilted surface located near the side with an offset high angle, and the tilted surface offset angle is γ, where 0.5°≤γ≤1°.

6. A saw blade for processing hardwoods according to claim 1, characterized in that, The inclined cutter head includes an inclined cutter head root, the inclined cutter head root includes a high-position side root located near the side of the offset high angle, the inclined cutter head root includes a low-position side root located near the side of the offset low angle, the high-position side root has an offset distance T1 between it and the saw blade body, the low-position side root has an offset distance T2 between it and the saw blade body, and T2 < T1.

7. A saw blade for processing hardwoods according to claim 1, characterized in that, The tilting cutter head includes a vertical plane positioned near the side with the offset low angle.

8. A saw blade for processing hardwood according to any one of claims 1-7, characterized in that, There is an offset tilt angle β between the offset high position angle and the offset low position angle, where 5°≤β≤15°.

9. A saw blade for processing hardwood according to any one of claims 1-7, characterized in that, The bottom-cleaning cutter head includes a machining top edge, which is located between the offset high angle and the offset low angle.

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