Butterfly-tooth-shaped uniformly-distributed diamond tool bit and saw blade
By designing a grooved area and an ungrooved area on the diamond cutting head to create a butterfly tooth structure, the problems of self-sharpening and uneven lifespan of the diamond cutting head are solved, achieving efficient and stable cutting results.
Patent Information
- Application Number
- CN202522298761.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-10-30
AI Technical Summary
Existing diamond cutting tools suffer from poor self-sharpening and uneven lifespan due to uneven diamond distribution during the cutting process. Furthermore, the initial sharpness of orderly arranged cutting tools is insufficient, resulting in low cutting efficiency.
The tool uses a butterfly-shaped diamond cutting tip with evenly distributed diamond particles. By forming grooved and non-grooved areas on the cutting tip, the diamond particle concentration is high in the grooved area and low in the non-grooved area, forming a sawtooth-like undulating structure, which realizes dynamic complementary wear of diamond particles.
It improves the initial sharpness and self-sharpening ability of the blade, extends its service life, reduces cutting power consumption and heat accumulation, and enhances cutting efficiency and stability.
Smart Images
Figure CN223802396U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to diamond tool bit technical field, concretely is a butterfly tooth shape even distribution diamond tool bit and saw blade. BACKGROUND
[0002] As a kind of efficient cutting tool, the core component of diamond saw blade is diamond tool bit. Tool bit is usually formed by mixing metal matrix powder and diamond particles, and then cold pressing and hot pressing sintering. At present, the arrangement of diamond in tool bit is mainly divided into two kinds:
[0003] The first kind is random arrangement. This kind of way is simple in process, but it is easy to lead to uneven distribution of diamond in matrix, and there is concentration difference in the same tool bit. In the cutting process, the degree of impact and wear of diamond is not the same, in the area with high concentration, single diamond is difficult to fall off, leading to new sharp edge (i.e. poor self-sharpening) cannot be exposed, so that tool bit becomes blunt. In the area with low concentration, single diamond bears too much load, and is easy to break or fall off early, leading to rapid wear of tool bit. This unevenness seriously affects the cutting efficiency and tool bit life.
[0004] The second kind is ordered array arrangement. This way solves the problem of uneven distribution by arranging diamond particles according to preset pattern, and can optimize performance by adjusting the spacing. The ordered arrangement makes the number of diamond participating in work on the cutting surface constant, and the force is uniform. However, its inherent uniformity also brings new technical problems: since the concentration of diamond in all areas is consistent, the overall wear of tool bit is synchronized, and a sharp "sawtooth" cutting surface cannot be formed, leading to poor initial sharpness and difficulty in cutting into stone, reinforced concrete and other materials, and the overall cutting performance, especially the efficiency, still needs to be improved. SUMMARY
[0005] In view of the deficiencies of the prior art diamond tool bit, the utility model provides a butterfly tooth shape even distribution diamond tool bit, which can not only retain the advantages of long life and stable performance of ordered arrangement, but also effectively improve the sharpness and efficiency of cutting.
[0006] To achieve the above purpose, the utility model realizes the following technical scheme: the butterfly tooth shape even distribution diamond tool bit is sintered by multiple layers of cold-pressed blanks, and diamond particles are arranged in order on the matrix of the cold-pressed blank. The tool bit includes a welding end connected with a metal matrix and a cutting edge end used for cutting. A pressure groove structure is formed on the two side working surfaces from the welding end to the cutting edge end, so that the tool bit forms a pressure groove area and a non-pressure groove area, and the concentration of diamond particles in the pressure groove area is greater than that in the non-pressure groove area.
[0007] Further, the concentration difference of diamond particles between the pressure groove area and the non-pressure groove area is 25-35%.
[0008] Further, the difference between the diamond particle concentration of the groove region and the non-groove region is 30%.
[0009] Further, the tool bit comprises oppositely arranged first and second working surfaces, the first working surface comprises first groove regions and first non-groove regions, and the second working surface comprises second groove regions and second non-groove regions; the first groove regions are multiple, and the multiple first groove regions are arranged at intervals, the second groove regions are multiple, and the multiple second groove regions are arranged at intervals, so that the working surface forms a zigzag undulating structure.
[0010] Further, the first working surface to the second working surface is the thickness direction of the tool bit, and any one first groove region has a second groove region of the same shape corresponding in the thickness direction.
[0011] Further, the welding end to the cutting edge end is the width direction of the tool bit, and at least one first groove region extends from the welding end to the cutting edge end in the width direction.
[0012] Further, the tool bit further comprises oppositely arranged first and second side surfaces, the first side surface to the second side surface is the length direction of the tool bit, at least one first groove region extends from the welding end to the first side surface, and at least one first groove region extends from the welding end to the second side surface.
[0013] Further, the shape of the first groove region and the second groove region is any one or a combination of multiple of arc-shaped grooves, V-shaped grooves, rectangular grooves, and triangular grooves.
[0014] Further, the first groove region comprises a first V-shaped groove, a second V-shaped groove, and a triangular groove; one side of the first V-shaped groove extends from the welding end to the first side surface, and the other side extends from the welding end to the cutting edge end; one side of the second V-shaped groove extends from the welding end to the second side surface, and the other side extends from the welding end to the cutting edge end; and the triangular groove is located between the first V-shaped groove and the second V-shaped groove and has one side located at the cutting edge end.
[0015] In another aspect, a saw blade comprises a circular metal base body, and a plurality of the butterfly-tooth-shaped uniformly distributed diamond tool bits are welded at intervals on the outer circumference of the circular metal base body.
[0016] The butterfly-tooth-shaped uniformly distributed diamond tool bit has the following beneficial effects:
[0017] 1. The butterfly-tooth-shaped uniformly distributed diamond cutter head is formed by physical pressing, and both sides are formed with butterfly-tooth-shaped working surfaces; it has the characteristics of attracting customers and the market more than flat teeth in appearance; in cutting use, the non-groove area (low concentration area of diamond particles) will quickly wear, making the diamond quickly emerge, providing excellent initial sharpness and self-sharpening; the groove area (high concentration area of diamond particles) wears slowly, and the diamond holding force is strong, which acts as a skeleton to support the cutter head, ensuring the service life and cutting stability of the cutter head. This "fast and slow" wear pattern forms a dynamic complement, perfectly solving the contradiction between the sharpness of orderly arranged cutter heads and the uneven life of disordered arranged cutter heads.
[0018] 2. The first working surface and the second working surface both have a plurality of spaced groove areas, forming a zigzag undulating structure, which makes the cutter head and the workpiece intermittent and wave-like contact during cutting, rather than continuous contact of the entire surface, effectively reducing the contact area and frictional resistance, thereby reducing the power consumption and heat accumulation during cutting, and also helping to remove chips.
[0019] The saw blade has the following beneficial effects:
[0020] The saw blade has excellent self-sharpening, sharpness and long life due to the butterfly-tooth-shaped uniformly distributed diamond cutter head, and the entire saw blade also has the comprehensive advantages of fast cutting speed, high efficiency, long service life, strong working condition adaptability (dry and wet use), etc. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a structure diagram of the butterfly-tooth-shaped uniformly distributed diamond cutter head in Example 1.
[0022] Figure 2 It is a structure diagram of the first working surface in Example 1.
[0023] Figure 3 It is a structure diagram of the saw blade in Example 2.
[0024] Reference signs: cutter head 100, circular metal base 200, saw blade 300, welding end 101, cutting edge end 102, first working surface 103, second working surface 104, first side surface 105, second side surface 106, diamond particle 1, groove area 2, first groove area 21, first V-shaped groove 211, second V-shaped groove 212, triangular groove 213, non-groove area 3, first non-groove area 31, accommodation groove 4, long slot 41, circular slot 42. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the utility model specification. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0026] Embodiment 1
[0027] Please refer to the drawings Figures 1-2 The utility model provides a butterfly tooth shape even distribution diamond tool bit 100, by multilayer cold pressing base sintering, the matrix of cold pressing base has ordered arrangement diamond particle 1, the tool bit 100 includes the welding end 101 connected with the metal matrix and the cutting edge end 102 for cutting, the pressure groove structure is pressed on the two side working surfaces from the welding end 101 to the cutting edge end 102, makes the tool bit 100 form pressure groove area 2 and non pressure groove area 3, the diamond particle 1 concentration of pressure groove area 2 is greater than the diamond particle 1 concentration of non pressure groove area 3.
[0028] The butterfly tooth shape even distribution diamond tool bit 100 of the utility model is pressed physically, and the working surfaces on both sides are formed into butterfly tooth shape; it has the characteristics of more attracting customers and market than flat tooth on appearance; when cutting, the non pressure groove area 3 (the low concentration area of diamond particle 1) will wear quickly, so that the diamond is quickly sharpened, and excellent initial sharpness and self-sharpening are provided; the pressure groove area 2 (the high concentration area of diamond particle 1) wears slowly, the diamond holding force is strong, and is used as a framework to support the tool bit 100, so that the service life and cutting stability of the tool bit 100 are ensured, and the contradiction between the sharpness difference of ordered arrangement tool bit 100 and the uneven life of unordered arrangement tool bit 100 is perfectly solved by the dynamic complementation of the "fast and slow" wear mode.
[0029] In the embodiment, the concentration difference of diamond particle 1 in the pressure groove area 2 and the non pressure groove area 3 is 25-35%, which is the best range determined by a large number of experiments, so as to ensure that the sharpness and the life reach the best balance, and the concentration difference is too small, and the effect is not obvious; if the concentration difference is too large, the diamond in the low concentration area may be exhausted too early or the high concentration area may be difficult to sharpen. Preferably, the concentration difference of diamond particle 1 in the pressure groove area 2 and the non pressure groove area 3 is 30%, and the concentration difference of 30% is the optimal choice for realizing the butterfly tooth shape undulating cutting edge surface and ensuring that the two areas can work effectively and durably.
[0030] In the embodiment, the diamond particles 1 are vertically arranged from the welding end 101 to the cutting edge end 102, and the adjacent two rows of diamond particles 1 are staggered. The number of diamond particles 1 participating in cutting at a time is significantly increased, and a multi-point and staggered cutting track is formed, thereby greatly improving the overall sharpness and cutting efficiency of the tool bit 100. At the same time, the ordered structure ensures that the worn diamond particles 1 on the outer layer can be timely removed, and the sharp diamond particles 1 on the next layer can be timely exposed, thereby realizing an ideal and controllable diamond exposure state.
[0031] In the embodiment, the tool bit 100 includes oppositely arranged first and second working surfaces 103 and 104. The first working surface 103 includes a plurality of first pressing groove regions 21 and a first non-pressing groove region 31, and the second working surface 104 includes a plurality of second pressing groove regions and a second non-pressing groove region. The first pressing groove regions 21 are arranged at intervals, and the second pressing groove regions are arranged at intervals, so that the working surface forms a zigzag undulating structure. The first working surface 103 and the second working surface 104 both have a plurality of pressing groove regions 2 arranged at intervals, thereby forming a zigzag undulating structure. This makes the tool bit 100 and the workpiece intermittently and wavelike contact during cutting, rather than continuous contact of the entire surface, thereby effectively reducing the contact area and frictional resistance, and reducing the power consumption and heat accumulation during cutting, and facilitating chip removal.
[0032] In the embodiment, the first working surface 103 to the second working surface 104 are the thickness direction of the tool bit 100, and any one first pressing groove region 21 has a second pressing groove region with the same shape corresponding in the thickness direction. The pressing groove regions 2 on the two working surfaces correspond to each other in the thickness direction and have the same shape, thereby ensuring the symmetry and mechanical balance of the structure of the tool bit 100. The symmetrical structure can avoid abnormal vibration or stress concentration during high-speed rotation cutting of the tool bit 100, thereby improving the stability of cutting and the reliability of the tool bit 100, and ensuring consistent performance of the double-sided use.
[0033] In the embodiment, the welding end 101 to the cutting edge end 102 are the width direction of the tool bit 100, and at least one first pressing groove region 21 extends from the welding end 101 to the cutting edge end 102 in the width direction. This through-type pressing groove design makes the high-concentration diamond region extend from the welding end 101 to the cutting edge end 102, thereby ensuring that the cutting edge end 102 always has a zigzag cross section. This provides continuous diamond supply for the tool bit 100 as a whole, thereby ensuring that even in the later stage of wear of the tool bit 100, there is still a high concentration of diamonds as a guarantee, thereby greatly improving the overall life and continuous cutting ability of the tool bit 100.
[0034] In the embodiment, the tool head 100 further comprises a first side 105 and a second side 106 arranged oppositely, the first side 105 to the second side 106 being the length direction of the tool head 100, at least one first pressure groove region 21 extending from the welding end 101 to the first side 105, and at least one first pressure groove region 21 extending from the welding end 101 to the second side 106. The influence range of the pressure groove structure is extended to the side edge of the tool head 100, so that the side cutting ability and chip removal performance of the tool head 100 are also optimized.
[0035] In the embodiment, the first pressure groove region 21 and the second pressure groove region are in any one of arc-shaped groove, V-shaped groove, rectangular groove, triangular groove or a combination of multiple thereof. Different shaped groove structures are suitable for different working conditions. The V-shaped groove, rectangular groove and triangular groove have more obvious stress concentration effect and are more prone to form rapid wear in the non-pressure groove area, and have higher sharpness.
[0036] As shown in the accompanying drawings, Figure 2 as a specific embodiment, the first pressure groove region 21 comprises a first V-shaped pressure groove 211, a second V-shaped pressure groove 212 and a triangular pressure groove 213. The first V-shaped pressure groove 211 extends from the welding end 101 to the first side 105 on one side and to the cutting edge end 102 on the other side. The second V-shaped pressure groove 212 extends from the welding end 101 to the second side 106 on one side and to the cutting edge end 102 on the other side. The triangular pressure groove 213 is located between the first V-shaped pressure groove and the second V-shaped pressure groove and is located at the cutting edge end 102 on one side. The first V-shaped pressure groove 211 and the second V-shaped pressure groove 212 ensure high strength support and diamond supply from the welding end 101 to the side and the cutting edge end 102, while the triangular pressure groove 213 at the cutting edge end 102 forms an independent, high concentration tooth tip. This structure maximizes the use of the concentration difference principle, while ensuring the overall structural strength of the tool head 100, creating multiple sharp and durable cutting points, and is a high integration of unique appearance and superior function.
[0037] The butterfly tooth-shaped uniform diamond tool head 100 of the embodiment actively and controllably creates high and low alternating regions of diamond concentration on the tool head 100 on the basis of ordered arrangement of diamonds through innovative pressure groove structure design. This structure cleverly utilizes the synergistic effect characteristics of low concentration area for sharpness and high concentration area for service life, realizes that the tool head 100 has the advantages of extremely high cutting sharpness, good self-sharpening, ultra-long service life and excellent cutting stability, and can efficiently cope with cutting challenges of various high abrasive materials such as stone and reinforced concrete.
[0038] Embodiment 2
[0039] Referring to the accompanying drawings, Figure 3As shown, the embodiment provides a saw blade 300, which comprises a circular metal base 200, and a plurality of butterfly-tooth-shaped uniformly distributed diamond cutter heads 100 as described in the embodiment 1 are welded at the outer periphery of the circular metal base 200. The saw blade 300 of the embodiment has excellent self-sharpening, sharpness and long service life due to the butterfly-tooth-shaped uniformly distributed diamond cutter heads 100, and the entire saw blade 300 also has the comprehensive advantages of fast cutting speed, high efficiency, long service life, strong working condition adaptability (both dry and wet use) and the like.
[0040] In the embodiment, gaps are formed between the adjacent two butterfly-tooth-shaped uniformly distributed diamond cutter heads 100, and the outer periphery of the circular metal base 200 is concave at the positions corresponding to the gaps to form a giving slot 4; the giving slot 4 comprises a communicating long slot 41 and a circular slot 42 from outside to inside, the long slot 41 provides the main giving function, and the circular slot 42 serves as a stress release area. The giving slot 4 can effectively disperse and relieve the stress concentration at the end of the slot, significantly improve the fatigue resistance and safety of the circular metal base 200, and prevent the circular metal base 200 from cracking at the slot under high-speed rotation.
[0041] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A butterfly tooth shaped uniform diamond cutter head sintered from a plurality of cold pressed blanks, the green body of the cold pressed blanks having diamond particles arranged in an order; characterized in that: The tool bit comprises a welding end connected with the metal base and a cutting edge, and a pressing groove structure is pressed on both sides of the working surface from the welding end to the cutting edge, so that the tool bit forms a pressing groove area and a non-pressing groove area, and the concentration of diamond particles in the pressing groove area is greater than that in the non-pressing groove area.
2. The butterfly tooth shaped equalized diamond cutter head of claim 1 wherein: The concentration difference of diamond particles between the pressing groove area and the non-pressing groove area is 25-35%.
3. The butterfly tooth shaped equalized diamond cutter head of claim 2, wherein: The diamond particles are vertically arranged from the welding end to the cutting edge, and the adjacent two rows of diamond particles are staggered.
4. The butterfly tooth shaped equal distribution diamond cutter head according to any one of claims 1-3, characterized in that: The tool bit comprises oppositely arranged first and second working surfaces, the first working surface comprises first pressing groove areas and first non-pressing groove areas, and the second working surface comprises second pressing groove areas and second non-pressing groove areas; the first pressing groove areas are arranged at intervals, and the second pressing groove areas are arranged at intervals, so that the working surface forms a zigzag undulating structure.
5. The butterfly tooth shaped equalized diamond cutter head of claim 4 wherein: The first working surface to the second working surface is the thickness direction of the tool bit, and any one first pressing groove area corresponds to a second pressing groove area of the same shape in the thickness direction.
6. The butterfly tooth shaped equalized diamond cutter head of claim 5 wherein: The welding end to the cutting edge is the width direction of the tool bit, and at least one first pressing groove area extends from the welding end to the cutting edge in the width direction.
7. The butterfly tooth shaped equalized diamond cutter head of claim 6 wherein: The tool bit further comprises oppositely arranged first and second side surfaces, the first side surface to the second side surface is the length direction of the tool bit, at least one first pressing groove area extends from the welding end to the first side surface, and at least one first pressing groove area extends from the welding end to the second side surface.
8. The butterfly tooth shaped equalized diamond cutter head of claim 7, wherein: The shape of the first and second pressing groove areas is any one or a combination of arc-shaped grooves, V-shaped grooves, rectangular grooves, and triangular grooves.
9. The butterfly tooth shaped equalized diamond cutter head of claim 8, wherein: The first pressing groove area comprises a first V-shaped pressing groove, a second V-shaped pressing groove, and a triangular pressing groove; one side of the first V-shaped pressing groove extends from the welding end to the first side surface, and the other side extends from the welding end to the cutting edge; one side of the second V-shaped pressing groove extends from the welding end to the second side surface, and the other side extends from the welding end to the cutting edge; and the triangular pressing groove is located between the first and second V-shaped pressing grooves and has one side located at the cutting edge.
10. A saw blade for a butterfly tooth shaped uniform diamond tip according to any one of claims 1-9, comprising a circular metal base body, characterized in that: A plurality of butterfly-tooth-shaped uniformly distributed diamond tool bits are welded at intervals on the outer circumference of the circular metal base.