A saw blade with staggered teeth, a saw blade production process and equipment

Abstract

The application provides a saw blade with staggered saw teeth, a saw blade production process and equipment, and relates to the technical field of composite material cutting processing. The saw blade with staggered saw teeth comprises a circular saw body, a plurality of first saw tooth portions and a plurality of second saw tooth portions are staggered along the circumferential direction on the outer periphery of the circular saw body, the first saw tooth portions and the second saw tooth portions are equal in number and are arranged in sequence with intervals, the first saw tooth portions and the second saw tooth portions are staggered with each other, so that staggered cutting structures are formed between adjacent different types of saw teeth. The structure is beneficial to dispersing cutting force, reducing the load of a single saw tooth, improving the stability and durability of the saw blade, and facilitating the fracture and discharge of chips, thereby improving the cutting efficiency and processing quality.

Description

Technical Field

[0001] This invention relates to the field of composite material cutting technology, and in particular to a saw blade with interlaced teeth, a saw blade manufacturing process and equipment. Background Technology

[0002] Currently, saw blade end mills are widely used as a high-efficiency cutting tool in the processing of composite materials. Their typical structure is a disc-shaped cutter body with circumferentially arranged teeth, suitable for grooving, cutting, and blanking operations on carbon fiber, glass fiber reinforced composite materials, etc. However, composite materials differ from metallic materials; they are composed of fiber reinforcements and a resin matrix, exhibiting strong anisotropy, poor thermal stability, and delamination fragility. This makes them highly susceptible to surface defects such as burrs, delamination, and fiber pull-out during cutting, especially when the tool design is inappropriate or the cutting edge control is insufficient.

[0003] Existing saw blade end mills mostly employ a continuous tooth structure. While this achieves a certain cutting efficiency at high speeds, the lack of effective chip-breaking or chip-control mechanisms between the teeth causes the chips to form long, continuous fibers during ejection. This not only easily leads to chip entanglement in the tool or blockage of the chip removal path, but also causes the chips to further pull on the surface fibers of the workpiece during dragging, ultimately resulting in noticeable burrs or chipping at the workpiece cut. This severely affects the surface finish and edge integrity of composite material products. Especially in high-end manufacturing fields such as aerospace and rail transportation, where appearance quality is paramount, poor surface quality directly impacts product performance and structural reliability. Summary of the Invention

[0004] This application discloses a saw blade with interlaced teeth, a saw blade manufacturing process and equipment, in order to solve the technical problem that burrs are easily generated in the finished products in related technologies.

[0005] In a first aspect, this application provides a saw blade with interlaced teeth, employing the following technical solution:

[0006] A saw blade with interlaced saw teeth includes: a circular saw body; a first set of saw teeth, multiple sets of which are provided on the outer peripheral wall of the circular saw body; a second set of saw teeth, also multiple sets of which are provided on the outer peripheral wall of the circular saw body, and the first set of saw teeth and the second set of saw teeth are arranged alternately in the circumferential direction of the circular saw body; wherein, the first set of saw teeth is composed of multiple first saw teeth arranged sequentially on the outer periphery of the circular saw body, and the second set of saw teeth is composed of multiple second saw teeth arranged sequentially on the outer periphery of the circular saw body, and both the first and second saw teeth are configured as inclined saw teeth and are obliquely symmetrical to the left and right; a chip breaking section, multiple chip breaking sections arranged circumferentially on the side surface of the circular saw body, and multiple chip breaking sections on the same radial direction of the circular saw body form a chip breaking groove; and a guide section, disposed between two adjacent first and second saw teeth, for automatically guiding chips from the end face to the chip breaking groove on the side during the rotation of the circular saw body.

[0007] Preferably, when adjacent first and second saw teeth are inclined towards each other from bottom to top, a triangular region is formed on the circular saw body between adjacent first and second saw teeth, and the guide portion is disposed within the triangular region; the guide portion has a first guide surface and a second guide surface that are opposite to each other, the inclination direction of the first guide surface is consistent with the inclination direction of the first saw tooth, and the inclination direction of the second guide surface is consistent with the inclination direction of the second saw tooth; a first guide groove is formed between the first guide surface and the first saw tooth, and the first guide groove is connected to one of the chip breaking grooves located on the lower surface of the circular saw body; a second guide groove is formed between the second guide surface and the second saw tooth, and the second guide groove is connected to another adjacent chip breaking groove located on the lower surface of the circular saw body.

[0008] Preferably, a first clearance surface is formed by cutting the portion of the adjacent first sawtooth portion near its upper end, and the first clearance surface is used to avoid the adjacent second sawtooth portion; a second clearance surface is formed by cutting the upper portion of the adjacent second sawtooth portion, and the second clearance surface is used to avoid the adjacent first sawtooth portion.

[0009] Preferably, a collecting groove is provided on the circular saw body and located between the first and second clearance surfaces. The collecting groove is connected to one of the chip breaking grooves on the upper surface of the circular saw body. One side edge of the first clearance surface is configured as one side edge of the collecting groove, and one side edge of the second clearance surface is configured as the other side edge of the collecting groove. From the direction away from the collecting groove to the direction near the collecting groove, the first clearance surface is recessed inward and then extends outward to the collecting groove. And / or, from the direction away from the collecting groove to the direction near the collecting groove, the second clearance surface is recessed inward and then extends outward to the collecting groove.

[0010] Preferably, when adjacent first and second sawtooth portions are inclined to each other from top to bottom, the portion of the adjacent first sawtooth portion near its lower end is cut to form a third clearance surface, which is used to avoid the adjacent second sawtooth portion. The portion of the adjacent second sawtooth portion near its lower end is cut to form a fourth clearance surface, which is used to avoid the adjacent first sawtooth portion. The guide portion is disposed between the third clearance surface and the fourth clearance surface.

[0011] Preferably, the guide portion has a third guide surface and a fourth guide surface that are opposite to each other. The inclination direction of the third guide surface is consistent with the inclination direction of the second saw tooth portion, and the inclination direction of the fourth guide surface is consistent with the inclination direction of the first saw tooth portion. A third guide groove is formed between the third guide surface and the third clearance surface, and the third guide groove is connected to one of the chip breaking grooves located on the lower surface of the circular saw body. A fourth guide groove is formed between the fourth guide surface and the fourth clearance surface, and the fourth guide groove is connected to another chip breaking groove located on the lower surface of the circular saw body.

[0012] Preferably, the upper end of the third guide groove intersects and communicates with the upper end of the fourth guide groove at an incline, and the incline communication between the third guide groove and the fourth guide groove is configured as a collection part; a fifth guide groove is provided between the first saw tooth part and the second saw tooth part and above the guide part, the first end of the fifth guide groove is connected to one of the chip breaking grooves on the upper surface of the circular saw body, and the second end of the fifth guide groove is connected to the collection part, so that the third guide groove, the fourth guide groove and the fifth guide groove form a "V" shape.

[0013] Preferably, the cross-sectional shape of the third guide groove is configured to gradually taper into a "V" shape from away from the collection point to near the collection point; and / or, the adjacent second saw teeth and the outer peripheral wall of the circular saw body together form an arc-shaped guide surface, one side edge of the arc-shaped guide surface is configured as one side edge of the fifth guide groove, and the arc-shaped guide surface is configured to first be concave inward and then extend outward in the direction from away from the fifth guide groove to near the fifth guide groove.

[0014] Secondly, this application provides a saw blade manufacturing process, which adopts the following technical solution:

[0015] A saw blade manufacturing process for producing a first aspect of a saw blade with interlaced teeth includes the following steps:

[0016] The board is cut to obtain a circular saw body, and multiple first and second saw tooth groups are cut into the outer periphery of the circular saw body in a staggered arrangement. Multiple chip breaking sections are cut into the upper and lower surfaces of the circular saw body to form chip breaking grooves.

[0017] After shot peening or sandblasting the circular saw body, the stress of the circular saw body is tested, and the particle size and speed of shot peening or sandblasting are controlled according to the test results so that the stress of the circular saw body meets the requirement of ≤0.2mm.

[0018] A titanium metal coating is applied to the surface of the circular saw body.

[0019] Thirdly, this application also provides an apparatus with an interlaced saw blade, including the interlaced saw blade of the first aspect, which can be used to cut composite material parts.

[0020] The present invention has the following advantages and beneficial effects:

[0021] By staggering the first and second saw teeth in terms of tilt angle and arrangement direction, the cutting force can be dispersed during the cutting process, which helps to reduce the load on individual saw teeth, decrease the wear rate of saw teeth, and thus extend the service life of the saw blade. Secondly, the staggered saw tooth combination can achieve a more continuous and stable cutting path during the cutting process, which helps to reduce cutting vibration and runout and improve the cutting surface quality. Thirdly, this staggered structure also has a positive effect on chip breaking and chip removal. Chips generated by different saw teeth can be discharged in a staggered manner, reducing the probability of chip clogging and helping to improve processing efficiency. Overall, this application achieves an optimized balance between cutting efficiency, service life, and processing quality through improvements to the saw tooth structure, and has strong practicality and promotional value. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the saw blade with interlaced teeth according to an embodiment of this application;

[0024] Figure 2 yes Figure 1 Enlarged view of part A in the image;

[0025] Figure 3 yes Figure 1 Enlarged view of part B in the image.

[0026] The diagram is marked as follows:

[0027] 1. Circular saw body; 11. Triangular area; 12. First guide groove; 13. Second guide groove; 14. Gathering groove; 15. Third guide groove; 16. Fourth guide groove; 17. Fifth guide groove; 18. Arc-shaped guide surface; 2. First saw tooth group; 21. First saw tooth part; 211. First clearance surface; 212. Third clearance surface; 3. Second saw tooth group; 31. Second saw tooth part; 311. Second clearance surface; 312. Fourth clearance surface; 4. Chip breaking part; 41. Chip breaking groove; 5. Guide part; 51. First guide surface; 52. Second guide surface; 53. Third guide surface; 54. Fourth guide surface; 6. Gathering part. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0029] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0030] Firstly, some embodiments of this application provide a saw blade with interlaced teeth. See also... Figure 1 , Figure 2 and Figure 3The staggered saw blade includes a circular saw body 1. Multiple sets of first saw teeth 2 and second saw teeth 3 are arranged on the outer peripheral wall of the circular saw body 1, with the first saw teeth 2 and second saw teeth 3 arranged alternately in the circumferential direction of the circular saw body 1. The first saw teeth 2 consists of multiple first saw teeth 21 arranged sequentially on the outer periphery of the circular saw body 1, and the second saw teeth 3 consists of multiple second saw teeth 31 arranged sequentially on the outer periphery of the circular saw body 1. Each first saw tooth 21 and second saw tooth 31 is configured as an inclined saw tooth, and they are relatively obliquely symmetrical to the left and right. This staggered arrangement between the first saw teeth 2 and the second saw teeth 3 can ensure a uniform distribution of cutting force in the circumferential direction during the rotation of the saw blade to cut the composite material, helping to reduce, to some extent, the edge cracking or delamination of the composite material caused by concentrated force on one side of the saw teeth. In particular, the inclined design of the serrations adjusts the cutting angle and contact angle to create a shearing rather than splitting pattern when cutting into the fiber layer, thereby reducing fiber tearing and pull-out to a certain extent and improving the smoothness of the cut surface of the composite material.

[0031] Furthermore, multiple chip-breaking sections 4 are arranged circumferentially on the side surface of the circular saw body 1, and these multiple chip-breaking sections 4 located in the same radial direction of the circular saw body 1 combine to form a chip-breaking groove 41. The aforementioned chip-breaking groove 41 does not protrude from the outer contour of the circular saw body 1, but is embedded or recessed on the side surface. Its purpose is to create a guiding and disturbing area in the path of the chips generated from the main cutting surface of the saw teeth and flowing along the cutting edge during the saw blade cutting process. Because the chips will bend or slip sharply when they contact the edge of the chip-breaking groove 41 during high-speed movement, thereby triggering secondary shearing or local stress concentration effects, this structural design is beneficial in breaking continuous chips into smaller segments to a certain extent, thus improving chip removal and preventing chips from accumulating, entangled, or blocking between the cutting teeth. This is particularly crucial for structures containing long fibers or continuous reinforcements in composite materials. Meanwhile, a guide portion 5 is provided between adjacent first saw tooth portions 21 and second saw tooth portions 31. This guide portion 5 is used to guide the chips generated by the end face of the saw teeth towards the chip breaking groove 41 on the side during the rotation of the circular saw body 1. The structure of the guide portion 5 can be a shallow concave drainage groove, a ramp, or a guide surface. Its purpose is to change the chip discharge direction, forming a continuous transition from the end face to the side and then to the chip discharge path. This helps to avoid the accumulation of chips in the cutting area, thereby improving the overall machining quality and surface integrity.

[0032] It is worth further clarification that the "staggered arrangement" does not only refer to the staggered distribution of the first tooth group 2 and the second tooth group 3 in the circumferential direction, but also includes the different configurations of the two groups of teeth in terms of radial cutting angle, tooth height, or tooth profile symmetry. This staggered structure can overcome the problem of poor force consistency of traditional single-group teeth, thereby improving the smoothness and impact resistance of cutting. In addition, although the "chip breaker groove 41" is set on the side surface of the saw body, due to its reasonable spatial continuity with the main cutting edge, the chips will naturally contact the groove area during movement, thereby achieving the chip breaking effect. Therefore, although the chip breaker groove 41 is not located on the main cutting face, it can still achieve effective chip breaking. Furthermore, the saw blade can be made of cemented carbide material. By optimizing the blade width and tooth profile design, the overall width of the saw blade is thinner, which helps to reduce the amount of processing dust and improve sawing efficiency, making it suitable for curve cutting operations on five-axis linkage equipment. In practical applications, this saw blade exhibits excellent cutting adaptability to different types of composite materials (such as prepregs, resin injection molding, and honeycomb materials), meeting the cutting requirements of materials with high or low fiber content and possessing a wide range of applications. Through the synergistic optimization of the above-mentioned structural and functional configuration, the staggered-tooth saw blade provided by this invention can achieve superior cutting quality at high feed rates, with fewer delamination, tearing, and fiber protrusion phenomena occurring during the cutting process, thereby improving the surface quality and production efficiency of composite material processing to a certain extent.

[0033] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, adjacent first saw teeth 21 and second saw teeth 31 are arranged at an angle close to each other from bottom to top, thus forming a triangular gap area on the circular saw body 1 between them. This area is called the triangular area 11, and a guide portion 5 is provided inside the triangular area 11. The guide portion 5 has a first guide surface 51 and a second guide surface 52 arranged opposite to each other, wherein the inclination direction of the first guide surface 51 is consistent with the inclination direction of the first saw teeth 21, and the inclination direction of the second guide surface 52 is consistent with the inclination direction of the second saw teeth 31. This consistent inclination configuration helps to naturally guide the chips along the cutting direction of the saw teeth into the guide groove formed by the guide portion 5 during the rotary cutting process of the circular saw body 1. Furthermore, a first guide groove 12 is formed between the first guide surface 51 and the first saw tooth portion 21, and a second guide groove 13 is formed between the second guide surface 52 and the second saw tooth portion 31. The two guide grooves are respectively connected to different chip breaking grooves 41 provided on the lower surface of the circular saw body 1, thereby forming a multi-segment chip conveying path from the blade to the side surface of the saw body and then to the chip breaking groove 41 on the lower surface.

[0034] It is worth noting that the "adjacent first sawtooth portion 21 and second sawtooth portion 31" here specifically refers to the last two sawtooths located at the boundary of their respective sawtooth groups, that is, a first sawtooth portion 21 located at one end of the first sawtooth group 2 and the closest second sawtooth portion 31 in the second sawtooth group 3 that is circumferentially adjacent to it. Since there is no direct adjacency between the first sawtooth portion 21 and the second sawtooth portion 31 in the tooth arrangement of other parts of the circular saw body 1, the above structure is only formed in the transition section between the two groups of sawtooths. By setting the guide portion 5 with bidirectional guiding function and the corresponding guide groove at this specific position, not only can the chips generated during end face cutting be effectively gathered and guided, but also, since the first guide groove 12 / second guide groove 13 itself has a certain volume, it can temporarily store excess chips when the circular saw body 1 is running at high speed, avoiding their concentrated accumulation in the main cutting area in a short time. This is beneficial to reducing the degree of interference of chips on the cutting interface, thereby improving the integrity of the cutting surface and the processing quality.

[0035] From the perspective of chip flow path, this structure achieves a connected design from the sawtooth section—first guide groove 12 / second guide groove 13—chip breaking groove 41—chip removal channel, breaking the problem of unclear chip path and poor chip accumulation in traditional tools, and improving chip removal efficiency. The inclined structure of the first guide groove 12 / second guide groove 13 also slows down the chip flow rate to a certain extent, reducing the dragging and tearing effect of fibrous chips on the edges of composite materials. Therefore, the above-mentioned guide part 5 not only enriches the function of the sawtooth transition area in terms of structure, but also provides strong support for high-quality cutting of composite material parts in terms of effect. Through the combination of the above structure and function, cutting stability, machining surface finish and service life of circular saw body 1 can be improved to a certain extent, making it suitable for efficient and high-quality cutting of various types of composite material parts.

[0036] In some embodiments, combined with Figure 1 , Figure 2 and Figure 3To address potential structural interference issues during the arrangement of the first saw tooth group 2 and the second saw tooth group 3 on the outer periphery of the circular saw body 1 with staggered saw teeth, and to improve chip removal efficiency and surface quality during the cutting process, a refined design was implemented for the saw tooth transition structure. Specifically, adjacent first saw tooth portions 21 are partially beveled near their upper ends to form a first clearance surface 211. This first clearance surface 211 is used to structurally avoid the second saw tooth portion 31 circumferentially adjacent to it. Similarly, the upper ends of adjacent second saw tooth portions 31 are also beveled to form a second clearance surface 311, structurally avoiding the first saw tooth portion 21. Since the first saw tooth portion 21 and the second saw tooth portion 31 are arranged in a symmetrical tilt, if they are too close together without any treatment, physical interference will occur due to their opposing tilt directions, affecting the overall rigidity of the circular saw body 1 and limiting the precision forming of the tooth shape. By setting the first clearance surface 211 and the second clearance surface 311, mutual interference between teeth can be effectively avoided while maintaining high-density tooth arrangement, thus meeting the dual requirements of machining space and tool strength.

[0037] Furthermore, a collecting groove 14 is provided in the area of ​​the circular saw body 1 between the first clearance surface 211 and the second clearance surface 311. Structurally, this collecting groove 14 is connected to one of the chip-breaking grooves 41 on the upper surface of the circular saw body 1, and functionally serves as a centralized guiding and transfer channel for cutting debris between the first clearance surface 211 and the second clearance surface 311. More specifically, one edge of the first clearance surface 211 forms one side of the collecting groove 14, and one edge of the second clearance surface 311 forms the other side of the collecting groove 14, together forming an upward-opening chip storage space. This collecting groove 14 not only facilitates the orderly collection of chips to a preset chip removal path during the rotational cutting of the circular saw body 1, but also improves the chip removal efficiency of the chip-breaking groove 41 to a certain extent, reducing the risk of secondary interference of chips in the cutting zone.

[0038] To further enhance the volume and guiding effect of the collecting groove 14, both the first clearance surface 211 and the second clearance surface 311 exhibit a composite curved surface structure that first concaves inward and then extends outward from the direction away from the collecting groove 14 to the direction closer to the collecting groove 14. This design allows the chips generated in the early stages of cutting to be guided by the concave surfaces and preferentially gather at the innermost concave part of the two clearance surfaces, thereby achieving a temporary buffer storage effect. As the amount of chips gradually increases, the chips will be transferred towards the collecting groove 14 under the action of the extended curved surface of the clearance surface, and finally guided into the chip breaking groove 41 through the collecting groove 14, realizing the functional coupling of segmented chip guiding and centralized chip removal. Compared with the traditional straight clearance structure, this composite curved surface design has a stronger chip holding capacity and chip guiding capacity, and is especially suitable for alleviating problems such as complex chip morphology, strong adhesion, and easy entanglement in composite material cutting.

[0039] It is worth noting that, to avoid ambiguity in terminology, "first clearance surface 211" and "second clearance surface 311" specifically refer to the inclined surfaces formed by the partial beveling process at the upper end of the saw teeth, which constitute the transition area between the saw teeth in the rotation direction of the circular saw body 1; "collecting groove 14" is a recessed groove structure inside this transition area, which is connected to the chip breaking groove 41 on the upper surface, and plays a triple function of converging, guiding chips, and reducing chip accumulation. With the cooperation of the above structural design and working mechanism, this embodiment not only solves the problem of interference in the saw tooth structure, but also further optimizes the cutting stability and chip removal path of the circular saw body 1 in the efficient processing of composite materials, which helps to improve the overall processing performance and service life of the circular saw body 1.

[0040] In some examples, refer to Figure 1 , Figure 2 and Figure 3 To address the structural interference problem caused by the inclined arrangement of the first saw tooth 21 and the second saw tooth 31 and their close proximity from top to bottom in a staggered saw blade, a corresponding avoidance structure is designed to improve the saw blade's tooth density and chip removal performance. Specifically, in the region near the lower end of an adjacent first saw tooth 21, a third avoidance surface 212 with a certain inclination is formed by local cutting in this area; correspondingly, the lower end of the adjacent second saw tooth 31 is also cut in a similar manner to form a fourth avoidance surface 312. The third avoidance surface 212 and the fourth avoidance surface 312 are used to prevent the first saw tooth 21 and the second saw tooth 31 from interfering with each other from top to bottom during the tooth arrangement process. Especially in the inclined staggered saw tooth design, the higher the tooth density and the larger the inclination angle, the more significant the potential structural conflict becomes.

[0041] Furthermore, to balance structural avoidance and functional guidance, a guide portion 5 is provided between the third avoidance surface 212 and the fourth avoidance surface 312, serving as an auxiliary channel for chips to be discharged from the saw tooth end face to the side. This guide portion 5, as described in other embodiments above, has a similar function when approaching from bottom to top; that is, during the rotary cutting process of the circular saw body 1, it helps guide the residual chips generated during the cutting process to move along the guiding direction, thereby reducing chip accumulation at the cutting edge to a certain extent, optimizing the chip removal path, and improving cutting quality and stability.

[0042] In the specific structural representation, both the third avoidance surface 212 and the fourth avoidance surface 312 are inclined surfaces formed by mechanical cutting. They are positioned on the inner surfaces of the lower ends of the first sawtooth portion 21 and the second sawtooth portion 31, near the interlaced area. Together with the guide portion 5 between the third avoidance surface 212 and the fourth avoidance surface 312, they form a transition area. This area provides both geometric space to avoid interference and a certain degree of chip guiding and storage function. The terms "third avoidance surface 212," "fourth avoidance surface 312," and "guide portion 5" in this embodiment should be consistent with those in the claims and should not be arbitrarily replaced to avoid semantic ambiguity or misunderstanding. In summary, this embodiment, based on the interlaced arrangement of saw teeth, avoids interference between saw teeth in terms of structural arrangement by setting the third avoidance surface 212 and the fourth avoidance surface 312, along with the guide portion 5 located between them. Simultaneously, it provides an effective chip removal guiding path for the cutting process, thereby improving the overall cutting accuracy and working stability of the saw blade to a certain extent.

[0043] In some embodiments, reference is made to Figure 1 , Figure 2 and Figure 3 In a saw blade with interlaced teeth, a third guide surface 212 and a fourth guide surface 312 are provided between the first saw tooth portion 21 and the second saw tooth portion 31, which are inclined towards each other from top to bottom. To further improve the chip removal efficiency during the cutting process, a third guide surface 53 and a fourth guide surface 54 with opposing structures are specially provided. The inclination direction of the third guide surface 53 is consistent with the inclination direction of the second saw tooth portion 31, while the inclination direction of the fourth guide surface 54 is consistent with the inclination direction of the first saw tooth portion 21. This consistent inclination design is beneficial for the chips to slide naturally into the guide structure along the original cutting direction of the saw teeth, thereby improving the smoothness of the guide path and the chip removal efficiency.

[0044] The third guide surface 53 and the third clearance surface 212 together form the third guide groove 15, while the fourth guide surface 54 and the fourth clearance surface 312 together form the fourth guide groove 16. Both guide grooves are connected to the chip-breaking groove 41 located on the lower surface of the circular saw body 1, thus structurally forming a chip transport path that enters from the outer edge of the saw teeth, is introduced through the guide grooves, and finally leads to the chip-breaking groove 41. In this way, during the saw blade's rotational cutting process, the cutting chips generated in the lower part of the intersection area of ​​the first saw tooth section 21 and the second saw tooth section 31 can smoothly flow into the chip-breaking groove 41 under the guidance of the guide grooves, effectively reducing chip accumulation at the root of the saw teeth and in the intersection area, which is beneficial for extending the cutting life of the saw teeth and improving the overall working stability of the saw blade.

[0045] In this embodiment, it should be specifically noted that the third guide surface 53 and the fourth guide surface 54 refer to two inclined surfaces within the guide section 5 used to form guide grooves and guide chips. Their "opposite" does not mean that the structures are completely symmetrical or far apart, but rather describes that they are oriented in the same inclined direction as their adjacent saw teeth. Similarly, the connection between the "third guide groove 15" and the "fourth guide groove 16" refers to their structural connection to different chip-breaking grooves 41 on the lower surface of the circular saw body 1, rather than the two guide grooves being directly connected to each other. These descriptions should be understood in conjunction with the staggered arrangement of the saw teeth and the three-dimensional spatial relationship of the guide structure.

[0046] In summary, by providing a guide portion 5 between the third clearance surface 212 and the fourth clearance surface 312, and further forming a third guide surface 53 and a fourth guide surface 54 within the guide portion 5 that match the inclination direction of the saw teeth, it is beneficial to smoothly guide the chips to the chip breaking groove 41 on the lower surface of the circular saw body 1 during the saw blade's operation, thereby improving chip guiding efficiency and chip removal effect, and thus playing a positive role in improving cutting quality and saw blade service life.

[0047] In some implementations, reference is made to Figure 1 , Figure 2 and Figure 3 To further enhance the chip diversion and removal capabilities of the staggered-tooth saw blade during high-load, high-frequency cutting, a structure is specifically designed where the upper ends of the third guide groove 15 and the fourth guide groove 16 intersect at an inclined angle and are connected, with a collection point 6 provided at their intersection. The collection point 6, as the junction of the third guide groove 15 and the fourth guide groove 16, plays a role in gathering and transferring chips in the chip flow path. This is beneficial in situations where the amount of chips in the two guide grooves is large or the risk of blockage is high, as it effectively diverts a portion of the chips through the junction area, thereby reducing the load pressure on one of the grooves. Furthermore, above the collection point 6, between adjacent first saw tooth sections 21 and second saw tooth sections 31, a fifth guide groove 17 is provided. The first end of the fifth guide groove 17 is connected to the chip breaking groove 41 on the upper surface of the circular saw body 1, and the second end is connected to the collection point 6, thus structurally forming a "V"-shaped guide channel.

[0048] This "human" shaped structural design not only provides a two-way guiding path but also creates a convergence and re-extraction flow mechanism in the cutting direction. Specifically, when the circular saw body 1 rotates at high speed for cutting, the chips guided by the third guide groove 15 and the fourth guide groove 16 converge towards the collection point 6 along their respective inclined paths, forming a local confluence at the collection point 6. The chips are then guided upwards via the fifth guide groove 17 to the chip breaking groove 41 on the upper surface of the circular saw body 1, thus forming a three-dimensional, multi-directional chip guiding system. This structure, to a certain extent, improves the chip removal capacity of the saw tooth area, alleviates the heat increase and friction loss caused by chip accumulation, and further enhances the stability and lifespan of the saw teeth during complex material cutting or long-term cutting processes.

[0049] It should be noted that the "inclined intersection" here refers to the fact that the third guide groove 15 and the fourth guide groove 16 form a certain angle near their upper regions, and structurally have an interconnected transition area. The collection part 6 is the solid structure of this transition area, which is a key position for facilitating collection and diversion. The "human" shape is not only a shape description, but also illustrates its dual-input, one-output guiding characteristic. This three-groove combination structure is beneficial for achieving more effective chip guidance within a limited space, thereby improving the problem of insufficient chip removal efficiency in traditional saw blades. In summary, by constructing the third guide groove 15, the fourth guide groove 16, and the fifth guide groove 17 into a "human" shaped structural configuration, chip removal efficiency can be effectively improved and chip clogging can be alleviated, providing strong structural support for the efficient and stable operation of circular saw blades.

[0050] In some implementations, combined with Figure 1 , Figure 2 and Figure 3 To further improve the efficiency of the third guide groove 15 and the fifth guide groove 17 in guiding chips generated during the cutting process, the cross-sectional shape of the third guide groove 15 was optimized, making it a gradually contracting "V" shape from the direction away from the collection part 6 to the direction closer to the collection part 6. This "V" shaped cross-sectional structure allows the groove to converge during chip movement, thus guiding and concentrating the chip flow in the direction of chip flow, which is beneficial for increasing the pressure and flow velocity of the chip guide channel. Compared with guide groove structures with uniform or expanding cross-sections, the contracting "V" structure is more effective in preventing the disordered accumulation of chips in the channel, while simultaneously forming a natural chip removal driving force, which is conducive to achieving more efficient chip removal.

[0051] Furthermore, to further enhance the chip guiding capability of the fifth guide groove 17, an arc-shaped guide surface 18 is provided between the adjacent second saw tooth portion 31 and the outer peripheral wall of the circular saw body 1, and one edge of the arc-shaped guide surface 18 is explicitly configured as one side edge of the fifth guide groove 17. Structurally, the arc-shaped guide surface 18 is designed to first be concave inward and then extend outward from the direction away from the fifth guide groove 17 towards the fifth guide groove 17, forming a composite curved surface structure that gathers and guides the chips towards the fifth guide groove 17. This structure allows the chips generated during cutting to flow towards the lowest concave point under the natural guidance of the concave curved surface when approaching the area of ​​the arc-shaped guide surface 18, thus facilitating concentrated flow. Before approaching the fifth guide groove 17, the outwardly extending arc-shaped segment gradually guides the chips into the fifth guide groove 17, thereby achieving smooth introduction and reducing accumulation. This structure is similar in function to the first clearance surface 211 and the second clearance surface 311 in claim 4. Both guide the chips to converge in the early stage through the concave structure and guide them into the chip removal groove in the later stage by means of the structural geometric characteristics.

[0052] It should be noted that the "V" shape here is not limited to a standard symmetrical form, but refers to a wedge-shaped channel with a converging trend on both sides of the cross-section. This structural design should be adjusted to balance strength and chip removal efficiency while meeting the requirements of the machining process. The "arc-shaped guide surface 18" is not merely a design feature, but a dynamic flow-guiding surface structure that creates a continuous sliding guide path for chips near the outer periphery during high-speed rotation of the saw blade. Therefore, through the above structural design, not only is the controllability and smoothness of the chip guiding path improved to a certain extent, but the staggered-tooth saw blade also exhibits higher resistance to clogging and a longer service life in actual cutting applications.

[0053] Secondly, some embodiments of this application also provide a saw blade manufacturing process, characterized in that the process for manufacturing the saw blade with interlaced teeth of the first aspect includes the following steps:

[0054] First, a high-strength metal sheet is selected as the raw material matrix. The sheet is processed into a circular saw body 1 with a predetermined size using a precision CNC cutting device. Multiple first saw tooth groups 2 and second saw tooth groups 3 are cut alternately along the circumferential direction on the outer periphery of the circular saw body 1. The two groups of saw teeth are arranged alternately along the circumferential direction to form an interlaced saw tooth structure. At the same time, multiple chip breaking parts 4 are opened on the upper and lower side surfaces of the circular saw body 1. The chip breaking parts 4 are formed into a through structure through the cutting process, thereby forming multiple chip breaking grooves 41 for subsequent chip removal, providing a connecting channel for the guide grooves and collection parts 6 between the saw teeth.

[0055] After the structural processing is completed, in order to release the residual stress generated inside the material during processing and improve the mechanical properties of the material surface, the circular saw body 1 is subjected to shot peening or sandblasting. In this step, a high-speed particle stream impacts the surface of the circular saw body 1 to introduce compressive stress into the metal surface layer, thereby inhibiting the initiation and propagation of cracks to a certain extent and improving the fatigue resistance of the saw blade during high-load and high-speed cutting. To control material deformation and stress concentration after shot peening or sandblasting, the stress state of the treated circular saw body 1 is detected, and the particle size and spray speed of the shot peening or sandblasting particles are adjusted to ensure that the stress deformation of the final circular saw body 1 is controlled within the range of ≤0.2mm. Here, "stress ≤0.2mm" refers to the limit value of material warping or deformation caused by stress in the thickness or flatness direction, aiming to ensure the overall flatness and geometric stability of the finished saw blade and prevent swaying or vibration during high-speed rotation.

[0056] Finally, a titanium metal coating is applied to the stress-treated circular saw blade 1. This titanium coating possesses excellent hardness, wear resistance, and oxidation resistance, which can improve the cutting performance and service life of the saw blade to a certain extent, and enhance its stability under high-temperature and high-speed machining conditions. The coating is achieved using vacuum coating processes such as physical vapor deposition (PVD), ensuring strong adhesion and uniform distribution on the saw blade surface. Through the above multi-step synergistic control, not only is the resulting staggered-tooth saw blade exhibiting good structural consistency and dimensional accuracy, but significant enhancements are also achieved in material properties and surface functions, which is beneficial for improving the overall performance of the saw blade under cutting conditions involving metals, high-strength alloys, or composite materials. This production process is suitable for mass production and has a realistic basis for industrial-scale promotion.

[0057] Thirdly, some embodiments of this application also provide an apparatus with an interlaced saw blade, characterized in that it includes the interlaced saw blade of the first aspect, which can be used to cut composite material parts.

[0058] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A saw blade with interlaced teeth, characterized in that, include: Circular saw body (1); The first saw tooth group (2) is provided with multiple groups on the outer peripheral wall of the circular saw body (1); The second saw tooth group (3) is also provided in multiple sets on the outer peripheral wall of the circular saw body (1), and the first saw tooth group (2) and the second saw tooth group (3) are arranged alternately in the circumferential direction of the circular saw body (1); wherein, The first saw tooth group (2) is composed of multiple first saw tooth parts (21) arranged sequentially on the outer periphery of the circular saw body (1), and the second saw tooth group (3) is composed of multiple second saw tooth parts (31) arranged sequentially on the outer periphery of the circular saw body (1). Both the first saw tooth parts (21) and the second saw tooth parts (31) are configured as inclined saw teeth and are obliquely symmetrical to the left and right. The chip-breaking section (4) is arranged circumferentially on the side surface of the circular saw body (1), and the multiple chip-breaking sections (4) located in the same radial direction of the circular saw body (1) form chip-breaking grooves (41). The guide part (5) is located between two adjacent first saw teeth (21) and second saw teeth (31) and is used to automatically guide the chips from the end face to the chip breaking groove (41) on the side during the rotation of the circular saw body (1); When the adjacent first sawtooth portion (21) and second sawtooth portion (31) are inclined to each other from bottom to top, a triangular region (11) is formed on the circular saw body (1) between the adjacent first sawtooth portion (21) and second sawtooth portion (31), and the guide portion (5) is provided in the triangular region (11). The guide portion (5) has a first guide surface (51) and a second guide surface (52) that are opposite to each other. The inclination direction of the first guide surface (51) is consistent with the inclination direction of the first serrated portion (21), and the inclination direction of the second guide surface (52) is consistent with the inclination direction of the second serrated portion (31). A first guide groove (12) is formed between the first guide surface (51) and the first saw tooth portion (21), and the first guide groove (12) is connected to one of the chip breaking grooves (41) located on the lower surface of the circular saw body (1); A second guide groove (13) is formed between the second guide surface (52) and the second saw tooth portion (31), and the second guide groove (13) is connected to another adjacent chip breaking groove (41) located on the lower surface of the circular saw body (1); The portion of the adjacent first sawtooth portion (21) near its upper end is cut to form a first clearance surface (211), which is used to avoid the adjacent second sawtooth portion (31). The upper part of the adjacent second serrated portion (31) is cut to form a second clearance surface (311), which is used to avoid the adjacent first serrated portion (21). A collecting groove (14) is provided on the circular saw body (1) and between the first clearance surface (211) and the second clearance surface (311). The collecting groove (14) is connected to one of the chip breaking grooves (41) on the upper surface of the circular saw body (1). One side edge of the first clearance surface (211) is configured as one side groove edge of the collecting groove (14), and one side edge of the second clearance surface (311) is configured as the other side groove edge of the collecting groove (14). From the direction away from the collection trough (14) to the direction near the collection trough (14), the first clearance surface (211) is recessed inward and then extends outward to the collection trough (14); and / or, from the direction away from the collection trough (14) to the direction near the collection trough (14), the second clearance surface (311) is recessed inward and then extends outward to the collection trough (14).

2. The saw blade with interlaced teeth according to claim 1, characterized in that, When adjacent first serrated portions (21) and second serrated portions (31) are inclined to each other from top to bottom, the portion of the adjacent first serrated portion (21) near its lower end is cut to form a third clearance surface (212). The third clearance surface (212) is used to avoid the adjacent second serrated portion (31). The portion of the adjacent second serrated portion (31) near its lower end is cut to form a fourth clearance surface (312). The fourth clearance surface (312) is used to avoid the adjacent first serrated portion (21). The guide portion (5) is provided between the third clearance surface (212) and the fourth clearance surface (312).

3. A saw blade with interlaced teeth according to claim 2, characterized in that, The guide portion (5) has a third guide surface (53) and a fourth guide surface (54) that are opposite to each other. The inclination direction of the third guide surface (53) is consistent with the inclination direction of the second serrated portion (31), and the inclination direction of the fourth guide surface (54) is consistent with the inclination direction of the first serrated portion (21). A third guide groove (15) is formed between the third guide surface (53) and the third clearance surface (212), and the third guide groove (15) is connected to one of the chip breaking grooves (41) located on the lower surface of the circular saw body (1). A fourth guide groove (16) is formed between the fourth guide surface (54) and the fourth clearance surface (312), and the fourth guide groove (16) is connected to another chip breaking groove (41) located on the lower surface of the circular saw body (1).

4. A saw blade with interlaced teeth according to claim 3, characterized in that, The upper end of the third guide groove (15) intersects and connects with the upper end of the fourth guide groove (16) at an incline, and the incline connection between the third guide groove (15) and the fourth guide groove (16) is configured as a collection part (6). A fifth guide groove (17) is provided between the first saw tooth portion (21) and the second saw tooth portion (31) and above the guide portion (5). The first end of the fifth guide groove (17) is connected to one of the chip breaking grooves (41) on the upper surface of the circular saw body (1), and the second end of the fifth guide groove (17) is connected to the collection portion (6) so that the third guide groove (15), the fourth guide groove (16) and the fifth guide groove (17) form a "V" shape.

5. A saw blade with interlaced teeth according to claim 4, characterized in that, The cross-sectional shape of the third guide groove (15) is configured to be a gradually narrowing "V" shape from away from the collection part (6) to near the collection part (6); And / or, the adjacent second saw tooth portion (31) and the outer peripheral wall of the circular saw body (1) together form an arc-shaped guide surface (18), one side edge of the arc-shaped guide surface (18) is configured as one side groove edge of the fifth guide groove (17), and the arc-shaped guide surface (18) is configured to first be concave inward and then extend outward in the direction from away from the fifth guide groove (17) to close to the fifth guide groove (17).

6. A saw blade manufacturing process, characterized in that, To manufacture the saw blade with interlaced teeth as described in any one of claims 1-5, the following steps are included: The board is cut to obtain a circular saw body (1), and multiple first saw tooth groups (2) and second saw tooth groups (3) are cut out on the outer periphery of the circular saw body (1) in a staggered manner. Multiple chip breaking parts (4) are cut out on the upper and lower side surfaces of the circular saw body (1) to form chip breaking grooves (41). After shot peening or sandblasting the circular saw body (1), the stress of the circular saw body (1) is tested, and the particle size and speed of shot peening or sandblasting are controlled according to the test results. A titanium metal coating is applied to the surface of the circular saw body (1).

7. A device with a saw blade having interlaced saw teeth, characterized in that, The saw blade with interlaced teeth as described in any one of claims 1-5 can be used to cut composite material parts.

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