Anti-tipping diamond circular saw blade

Abstract

The utility model relates to the field of wood and wood composite material cutting processing, in particular to an anti-tipping diamond circular saw blade which comprises a cutter body. The corundum saw grinding layer is fixedly arranged on the side wall of the outer circle of the cutter body in a circular strip shape; the cutter tooth assembly is fixedly connected to the side wall of the outer circle of the corundum saw grinding layer and comprises cutter teeth; the cutter teeth comprise the pre-cutting cutter teeth, the rough trimming cutter teeth and the fine trimming cutter teeth, due to the arrangement of the three kinds of cutter teeth, the tipping possibility of the diamond cutter teeth is reduced, the impact resistance of the diamond cutter teeth is improved, the sharpness of the rough trimming cutter teeth and the fine trimming cutter teeth is kept, and the possibility of edge breakage at the edge of the veneer shaving board is reduced; and the saw grinding layer is added after secondary fine trimming, so that the uneven saw line wall of the veneer shaving board with a multi-layer structure can achieve relatively consistent surface quality, and the problem that the machining quality of the saw line wall is uneven is solved.

Description

Technical Field

[0001] The utility model relates to the field of cutting and processing of wood and wood composite materials, in particular to an anti-chipping diamond circular saw blade. Background Art

[0002] As we all know, diamond tools have been widely used in cutting various materials. Their many advantages are mainly as follows: ① Diamond tools have high hardness. Diamond is one of the hardest materials known so far, with a hardness of 10 on the Mohs scale, so diamond circular saw blades can easily cope with materials of various hardnesses. For example, diamond circular saw blades can easily cut hard diamond, glass, marble, granite and other materials; ② Diamond tools have high wear resistance. Diamond circular saw blades have excellent wear resistance, can remain sharp for a long time, and are not easy to lose cutting efficiency. Compared with other common cutting tools, diamond circular saw blades have a longer service life, greatly reducing cutting costs; ③ Good cutting accuracy. Diamond circular saw blades have excellent cutting accuracy, enabling delicate cutting and smooth cut surfaces. This makes diamond circular saw blades widely used in industries that require high-precision cutting, such as jewelry processing and optoelectronics industries. ④ Wide applicability. Diamond circular saw blades can be used to cut a variety of materials, including metals, diamonds, glass, stone, etc. Therefore, it has a wide range of applications in many fields such as construction, manufacturing, mining, gemstone processing, and electronic manufacturing.

[0003] Although diamond tools have many advantages, general diamond circular saw blades are prone to many problems when cutting veneer particleboard due to the symmetrical structure of the veneer particleboard. For example: ① In the process of cutting veneer particleboard, due to the uneven hardness of each layer of material and the brittleness of diamond material, the circular saw blade is prone to chipping; ② Due to the high hardness and brittleness of the veneer layer of the veneer particleboard, it is easy to produce edge chipping during high-speed cutting, affecting the appearance of the finished product; ③ Due to the large particle size of the coarse particle layer of the veneer particleboard, the particle size is blunted. The blade is easy to fall off after cutting instead of cutting, so pits are easy to appear on the saw path wall; ④ During high-speed cutting, if the blade teeth are not sharp enough or the friction with the saw path wall is large, the blade may grab the fibers and tear them instead of cutting the particleboard clearly, resulting in fluffing; ⑤ Due to the different coarseness of the coarse particle layer and the fine particle layer, the surface roughness of the saw path wall is uneven, and the circular saw blade is more likely to get stuck during the cutting of the veneer particleboard; Therefore, it is very necessary to propose an anti-chipping diamond circular saw blade. Utility Model Content

[0004] The utility model aims to provide a diamond circular saw blade with chipping prevention, so that when the veneer particle board is cut by the diamond saw blade, the diamond teeth are prone to chipping, the veneer layer of the veneer particle board is prone to edge chipping, the saw path wall is prone to pits and fuzzing, and the saw blade is prone to being clamped by the plate, so as to supplement and improve the existing technical defects and unmet technical requirements.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a diamond saw blade for processing veneer particleboard, comprising:

[0006] A main body, wherein a mounting hole is provided at the center of the main body;

[0007] The blade tooth assembly is fixedly distributed on the circumferential side wall of the main body in a centrally symmetrical structure, and the blade tooth assembly includes a blade tooth seat and blade teeth, one end of the blade tooth seat is fixedly connected to the main body, and the other end is equipped with blade teeth;

[0008] The knife teeth include pre-cutting knife teeth, rough trimming knife teeth and fine trimming knife teeth, which are sequentially mounted on the knife tooth seat to achieve step-by-step cutting of the object to be cut.

[0009] Preferably, it also includes a corundum sawing and grinding layer, one end of which is fixedly covered on the circumferential side wall of the main body, and the other end is fixedly connected to the tooth seat, and the tooth and the corundum sawing and grinding layer are separated at the two ends of the tooth seat.

[0010] Preferably, at least one pre-cutting tooth is provided, at least two rough trimming teeth are provided, and at least two finishing teeth are provided.

[0011] Preferably, the rough trimming teeth at least include a first rough trimming tooth and a second rough trimming tooth, the first rough trimming tooth is located between the pre-cutting tooth and the second rough trimming tooth, and the cutting edges of the first rough trimming tooth and the second rough trimming tooth are arranged on opposite sides;

[0012] The finishing teeth at least include a first finishing tooth and a second finishing tooth, the first finishing tooth is located between the second rough finishing tooth and the second finishing tooth, the cutting edges of the first finishing tooth and the second finishing tooth are also arranged on opposite sides, and the cutting edge of the first finishing tooth is arranged on the same side as the cutting edge of the first rough finishing tooth;

[0013] Both sides of the pre-cutting teeth are provided with cutting edges;

[0014] A window is arranged between the pre-cutting tooth and the second finishing tooth in the adjacent tooth assembly, and each group of teeth includes only one window.

[0015] It should be emphasized that the cutting edges of all adjacent teeth of the same type are set on opposite sides, that is, the first rough trimming tooth cuts one side of the saw path wall, the second rough trimming tooth cuts the other side of the saw path wall, the first fine trimming tooth cuts one side of the saw path wall, and the cutting surface is the same as the first rough trimming tooth, and the second fine trimming tooth cuts the other side of the saw path wall, and the cutting surface is the same as the second rough trimming tooth. In summary, the pre-cutting tooth has cutting edges on both sides and cuts both sides of the saw path wall, and the rough trimming, fine trimming, and under-tooth fine planing tools all have only one side of the cutting edge and only cut one side of the saw path wall.

[0016] Preferably, the window includes:

[0017] A vertical portion, the vertical portion is located on the cutter tooth seat and close to the end of the pre-cutting cutter tooth;

[0018] A chip removal chamber, one end of which is connected to the vertical portion, and the chip removal chamber is located at one end of the vertical portion close to the center of the main body.

[0019] Preferably, the window further includes:

[0020] The arc part is located on the end of the tooth seat close to the second finishing tooth, and one end of the arc part close to the center of the main body is connected to one end of the discharge groove away from the vertical part.

[0021] Preferably, a tooth planer is provided on the vertical portion, and the main cutting edges of the tooth planers in adjacent windows are arranged on opposite sides, that is, adjacent tooth planers cut different saw path walls.

[0022] Preferably, the extension line of the vertical portion is located between the pre-cutting teeth and the second finishing teeth, and does not intersect with the teeth.

[0023] Preferably, the net cutting widths of the pre-cutting teeth, the rough trimming teeth, the fine trimming teeth and the under-teeth fine planing cutter become smaller in sequence.

[0024] Preferably, 9-15 groups of blade tooth assemblies are arranged on the corundum sawing layer.

[0025] Preferably, a tooth planer is provided on the vertical portion, the concave angle of the rear tooth surface of the tooth planer is 5-7°, and the net cutting width accounts for 1-2% of the total cutting width.

[0026] Preferably, the central angle I of the pre-cutting teeth is 8 to 12°, the central angle I of the rough trimming teeth is 5 to 8°, and the central angle I of the fine trimming teeth is 3 to 6°.

[0027] It should be emphasized that single-blade teeth of the same type are identical in the same parameters.

[0028] Preferably, the rake angle I of the pre-cutting teeth is 3 to 7°, the rake angle of the rough trimming teeth is 8 to 15°, and the rake angle of the fine trimming teeth is 17 to 25°;

[0029] The wedge angle I of the pre-cutting teeth is 78-82°, the wedge angle II of the roughing teeth is 73-77°, the wedge angle III of the finishing teeth is 63-67°, and the back angle is 5°.

[0030] Preferably, the concave angle I of the rear tooth surface of the pre-cutting cutter teeth is 1 to 3°, the concave angle II of the rear tooth surface of the rough trimming cutter teeth is 3 to 5°, and the concave angle III of the rear tooth surface of the finishing cutter teeth is 5 to 7°;

[0031] The side edge concave angle I of the pre-cutting tooth is 1 to 3°, the side edge concave angle of the rough trimming tooth is 3 to 7°, and the side edge concave angle of the fine trimming tooth is 7 to 12°.

[0032] Preferably, the net cutting width I of the pre-cutting teeth accounts for 80-90% of the total cutting width, the net cutting width II of the rough trimming teeth accounts for 5-10% of the total cutting width, and the net cutting width III of the fine trimming teeth accounts for 1-3% of the total cutting width.

[0033] Preferably, the bevel grinding angle of the front tooth surface of the rough trimming cutter teeth is 5 to 10°, and the bevel grinding angle of the front tooth surface of the fine trimming cutter teeth is 10 to 15°;

[0034] The rear tooth surface bevel grinding angle of the roughing cutter teeth is 3 to 7 degrees, and the rear tooth surface bevel grinding angle of the fine cutting cutter teeth is 7 to 12 degrees.

[0035] Compared with the prior art, the beneficial effects of the utility model are:

[0036] 1. By setting three types of cutter teeth, namely pre-cutting, rough trimming and fine trimming, the present application can allocate most of the net cutting width to the pre-cutting cutter teeth designed with emphasis on toughness, thereby reducing the cutting resistance that the rough trimming and fine trimming cutter teeth need to bear, lowering the toughness requirements for the cutter teeth, and being able to design a higher cutter tooth sharpness, thereby avoiding the occurrence of defects such as pits and fuzzing, and improving the processing quality of the saw path wall.

[0037] 2. The present application sets different parameters of the three types of cutter teeth, namely, the stop center angle, front angle, wedge angle, back angle, back tooth surface concave angle, measuring edge concave angle, net cutting width, front tooth surface bevel grinding angle and main edge chamfer, so as to better improve the strength and sharpness of the cutter teeth during cutting, reduce the friction with the cut object, and make the present application have high stability, high cutting efficiency, and high flatness of the cut surface.

[0038] 3. The present application is provided with a toothed fine planer, which can improve the efficiency of collecting sawdust and can further reprocess the saw path wall after fine-tuning, thereby improving the processing quality and processing stability of the saw path wall.

[0039] 4. The present application sets a corundum sawing and grinding layer. Adding the sawing and grinding layer after the secondary finishing can make the uneven and multi-layered sawing path walls of the veneer particleboard achieve relatively consistent surface quality, thus solving the problem of uneven sawing path wall processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0041] Figure 2 For the utility model Figure 1 A local enlarged schematic diagram of point A shown in FIG.

[0042] Figure 3 Another overall structural schematic diagram of the utility model;

[0043] Figure 4 For the utility model Figure 3 A local enlarged schematic diagram of point E shown in FIG.

[0044] Figure 5 Another overall structural schematic diagram of the utility model;

[0045] Figure 6 For the utility model Figure 5 A local enlarged schematic diagram of point F shown in FIG.

[0046] Figure 7 For the utility model Figure 1 Top view of the pre-cutting teeth viewed from the B direction;

[0047] Figure 8 For the utility model Figure 1 A top view of the teeth of the first rough trimming cutter viewed from the B direction;

[0048] Fig. 9 For the utility model Figure 1 A top view of the teeth of the second coarse trimming cutter viewed from the direction B in FIG.

[0049] Fig.10 For the utility model Figure 1 A top view of the teeth of the first finishing cutter viewed from the direction B in FIG.

[0050] Fig.11 For the utility model Figure 1 Top view of the teeth of the second finishing cutter viewed from the B direction;

[0051] Fig.12 For the utility model from the window along Figure 3 The blade surface view of the pre-cutting blade teeth as viewed from the B direction;

[0052] Fig.13For the utility model from the window along Figure 3 A blade view of the first roughing cutter viewed from the B direction;

[0053] Fig.14 For the utility model from the window along Figure 3 A blade view of the second roughing cutter viewed from the B direction;

[0054] Fig.15 For the utility model from the window along Figure 3 A blade view of the first finishing knife viewed from the B direction;

[0055] Fig.16 For the utility model from the window along Figure 3 The blade surface view of the second finishing knife viewed from the B direction;

[0056] Fig.17 For the utility model from the window along Figure 3 A schematic diagram of the structure of the cutter tooth assembly viewed from the B direction;

[0057] Fig.18 For the utility model Fig.17 A local enlarged schematic diagram of point C shown in FIG.

[0058] Fig.19 For the utility model Figure 5 A local enlarged schematic diagram of G shown in FIG.

[0059] Fig. 20 This is a schematic diagram of the structure of the under-tooth fine planer of the utility model;

[0060] Fig.21 It is a schematic diagram of the overall structure of the utility model during cutting;

[0061] Fig. 22 This is a schematic diagram of the positional relationship between the cutter teeth and the object being cut during cutting according to the utility model;

[0062] Fig.23 The surface sawing path diagram of the workpiece being cut in the present invention;

[0063] In the figure: main body 1, mounting hole 10, pre-cutting tooth seat 21, first roughing tooth seat 22, second roughing tooth seat 23, first fine-finishing tooth seat 24, second fine-finishing tooth seat 25, pre-cutting tooth 31, first roughing tooth 32, second roughing tooth 33, first fine-finishing tooth 34, second fine-finishing tooth 35, corundum saw grinding layer 40, window 50, vertical part 51, chip removal cavity 52, arc part 53, under-tooth fine planer 60, front tooth surface bevel grinding angle V-61, rear tooth surface concave angle VI-62, main cutting edge 63, net cutting width IV-64, middle Center angle I-71, center angle II-72, center angle III-73, center angle IV-74, center angle V-75, front angle I-76, front angle III-77, front angle III-78, front angle IV-79, front angle V-80, wedge angle I-81, wedge angle II-82, wedge angle III-83, wedge angle IV-84, wedge angle V-85, back angle I-86, back angle II-87, back angle III-88, back angle IV-89, back angle V-90, back tooth surface concave angle I-91, back tooth surface concave angle II-92, back tooth surface concave angle III-93, back tooth surface concave angle I V-94, rear tooth surface concave angle V-95, side edge concave angle I-96, side edge concave angle II-97, side edge concave angle III-98, side edge concave angle IV-99, side edge concave angle V-100, net cutting width I-101, net cutting width II-102, net cutting width III-103, front tooth surface bevel grinding angle I-104, front tooth surface bevel grinding angle II-105, front tooth surface bevel grinding angle III-106, front tooth surface bevel grinding angle IV-107, rear tooth surface bevel grinding angle I-108, rear tooth surface bevel grinding angle II-109, rear tooth surface bevel grinding angle III-110, rear tooth surface bevel grinding angle Angle IV-111, main edge chamfer I-112, main edge chamfer II-113, main edge chamfer III-114, main edge chamfer IV-115, main edge chamfer V-116, main edge chamfer cutting contour line I-117, main edge chamfer cutting contour line II-118, main edge chamfer cutting contour line III-119, main edge chamfer cutting contour line IV-120, main edge chamfer cutting contour line V-121, main edge chamfer cutting contour line VI-122, cut workpiece -130, upper surface of cut workpiece -131, lower surface of cut workpiece -132, center axis surface of circular saw blade -133. DETAILED DESCRIPTION

[0064] The following will be combined with the attached embodiment of the present utility model Figure 1-23, clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0065] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0066] See also Figure 1-23 , the utility model embodiment:

[0067] Example:

[0068] As shown in Figure 1-18: an anti-chipping diamond circular saw blade, comprising:

[0069] A main body 1, a mounting hole 2 is provided at the center of the main body 1, and the main body 1 is circular;

[0070] The corundum sawing and grinding layer 40 is in the shape of a circular belt and is fixedly arranged on the outer circular side wall of the main body 1;

[0071] The blade tooth assembly is fixedly connected to the corundum sawing and grinding layer 40, and the blade tooth assembly is distributed on the outer cylindrical side wall of the corundum sawing and grinding layer 40 in a central symmetrical structure. The corundum sawing and grinding layer 40 is provided with 12 groups of blade tooth assemblies;

[0072] The cutter tooth assembly includes a cutter tooth seat and cutter teeth. One end of the cutter tooth seat is fixedly connected to the corundum sawing layer 40, and the other end is equipped with cutter teeth, which are made of diamond.

[0073] The blade teeth include pre-cutting blade teeth 31, rough trimming blade teeth and finishing blade teeth. The pre-cutting blade teeth 31, rough trimming blade teeth and finishing blade teeth are installed on the blade tooth seat in sequence. The pre-cutting blade teeth 31 are set as one, the rough trimming blade teeth are set as two, and the finishing blade teeth are set as two; and the single blade teeth of the rough trimming blade teeth and the finishing blade teeth only cut one side of the saw path wall.

[0074] The main edge chamfer length of the pre-cutting tooth 31 accounts for 25% of the total main edge length, the main edge chamfer length of the roughing tooth accounts for 15% of the total main edge length, and the main edge chamfer length of the finishing tooth accounts for 7% of the total main edge length.

[0075] In this embodiment, the setting of the pre-cutting teeth 31, the roughing teeth and the finishing teeth can allocate most of the net cutting width to the pre-cutting teeth 31 that emphasizes toughness, while the cutting resistance that the subsequent roughing teeth and the finishing teeth need to bear is reduced, which reduces the toughness requirements of the roughing teeth and the finishing teeth, and a higher tooth sharpness can be designed for them, thereby avoiding the occurrence of defects such as pits and fuzzing, and improving the processing quality of the saw path wall. At the same time, during cutting, the initial cutting is performed by the roughing teeth, and the second finishing cutting is completed by the finishing teeth, so as to improve the cutting quality of the saw in this embodiment.

[0076] The corundum saw grinding layer 40 is set up. During cutting, the corundum saw grinding layer 40 can grind the saw path wall after secondary fine-tuning, so that the uneven and multi-layered saw path wall of the veneer particle board can achieve relatively consistent surface quality, solving the problem of uneven saw path wall processing quality, that is, removing defects such as fuzzing, and improving the processing quality of the saw path wall.

[0077] The main edge chamfer setting of each tooth is, specifically, the main edge chamfer I112 of the pre-cutting tooth 31 accounts for 25% of the total length of its main edge, the main edge chamfer II113 of the first rough trimming tooth 32 and the main edge chamfer III114 of the second rough trimming tooth 33 account for 15% of the total length of its main edge, and the main edge chamfer IV115 of the first finishing tooth 34 and the main edge chamfer V116 of the second finishing tooth 35 account for 7% of the total length of its main edge. Different sizes of main edge chamfers can be designed for teeth with different functions, which can enhance the impact resistance of the blade tip. The impact ability is improved, and the possibility of chipping of the diamond tooth is reduced. Because the main edge chamfer is proportional to the toughness of the tooth and inversely proportional to the sharpness, the sharpness of the rough and fine trimming teeth can be maintained as much as possible, reducing the possibility of edge chipping at the edge of the veneer particle board. Specifically, the pre-cutting tooth 31 with the largest cutting range and responsible for pre-cutting has the largest main edge chamfer, the rough trimming tooth with a moderate cutting amount and responsible for rough cutting has a moderate main edge chamfer, and the fine trimming tooth with a minimum cutting amount and responsible for fine cutting has the smallest main edge chamfer.

[0078] like Figure 1-18 As shown: the rough trimming teeth include a first rough trimming tooth 32 and a second rough trimming tooth 33, the first rough trimming tooth 32 is located between the pre-cutting tooth 31 and the second rough trimming tooth 33, and the cutting edges of the first rough trimming tooth 32 and the second rough trimming tooth 33 are arranged on opposite sides;

[0079] The finishing teeth include a first finishing tooth 34 and a second finishing tooth 35. The first finishing tooth 34 is located between the second roughing tooth 33 and the second finishing tooth 35. The cutting edges of the first finishing tooth 34 and the second finishing tooth 35 are also arranged on different sides, and the cutting edge of the first finishing tooth 34 is arranged on the same side as the cutting edge of the first roughing tooth 32.

[0080] Both sides of the pre-cutting teeth 31 are provided with cutting edges;

[0081] A window 50 is provided between the pre-cutting tooth 31 and the second finishing tooth 35 in the adjacent tooth assembly.

[0082] In this embodiment, specifically, the cutter tooth seat is divided into: a pre-cutting cutter tooth seat 21, a first rough trimming cutter tooth seat 22, a second rough trimming cutter tooth seat 23, a first fine trimming cutter tooth 34 and a second fine trimming cutter tooth seat 25, and the following cutter teeth are installed on the above five cutter tooth seats in sequence: a pre-cutting cutter tooth 31, a first rough trimming cutter tooth 32, a second rough trimming cutter tooth 33, a first fine trimming cutter tooth 34 and a second fine trimming cutter tooth 35, and the cutting edges of all adjacent cutter teeth of the same type are arranged on opposite sides, that is, the first rough trimming cutter tooth 32 is on one side of the saw path wall. The second rough trimming tooth 33 cuts the other side of the saw path wall, the first fine trimming tooth 34 cuts one side of the saw path wall, and has the same cutting surface as the first rough trimming tooth 32, and the second fine trimming tooth 35 cuts the other side of the saw path wall, and has the same cutting surface as the second rough trimming tooth 33. In summary, the pre-cutting tooth 31 has cutting edges on both sides, and cuts both sides of the saw path wall. The rough trimming, fine trimming, and under-tooth fine planing tools 60 all have only one side of the cutting edge, and only cut one side of the saw path wall.

[0083] The window 50 designed in front of the pre-cutting teeth 31 can provide temporary storage space for the large amount of sawdust generated by pre-cutting, and can provide sufficient sawdust discharge space to avoid the adverse effects of sawdust accumulation on cutting, ensure the processing quality of the saw path wall, and ensure cutting stability.

[0084] like Fig.19 As shown: Window 50 includes:

[0085] A vertical portion 51, the vertical portion 51 is located on the tooth seat near the end of the pre-cutting tooth 31, and the extension line of the vertical portion 51 is located between the pre-cutting tooth 31 and the second finishing tooth 35, and does not intersect with the tooth;

[0086] A chip removal chamber 52, one end of which is connected to the vertical portion 51, and the chip removal chamber 52 is located at one end of the vertical portion 51 close to the center of the main body 1;

[0087] The arc portion 53 is located on the end of the tooth seat close to the second finishing tooth 35, and one end of the arc portion 53 close to the center of the main body 1 is connected to one end of the discharge groove away from the vertical portion 51.

[0088] In this embodiment, it should be emphasized that the outer contour of the arc portion 53 is an arc as the name implies;

[0089] The setting of the position of the vertical portion 51 provides an assembly position for the under-tooth planer 60, which can make it easier to assemble the under-tooth planer 60 on the vertical portion. The chip removal chamber 52 can speed up the discharge of sawdust and reduce the adverse effects of sawdust accumulation on cutting. The arc design of the arc portion 53 not only increases the size of the window 50 and the storage capacity of sawdust, but also ensures that the main body 1 has sufficient supporting capacity for the second finishing tool tooth seat 25, thereby ensuring the safety of cutting under high-pressure environments.

[0090] The extension line of the vertical portion 51 is located between the pre-cutting teeth 31 and the second finishing teeth 35 and does not intersect with the teeth, which can avoid possible obstruction of the pre-cutting teeth 31 and the second finishing teeth 35 during the assembly and unloading of the under-tooth planer 60, thereby improving the convenience of assembling the under-tooth planer 60.

[0091] like Fig. 20 As shown: a tooth planer 60 is arranged on the vertical portion 51, and the main cutting edges 63 of the tooth planers 60 in the adjacent windows 50 are arranged on opposite sides, the inner concave angle 62 of the rear tooth surface of the tooth planer 60 is 6°, and the net cutting width accounts for 2% of the total cutting width.

[0092] In this embodiment, a toothed planer 60 is installed on the vertical portion 51 in the window 50. The existence of the toothed planer 60 can not only improve the efficiency of collecting sawdust, but also reprocess the saw path wall after fine-tuning, thereby improving the processing quality of the saw path wall and enhancing the stability of the circular saw blade.

[0093] Specifically, a front tooth surface bevel grinding angle V61 of the under-tooth planer 60 is designed to be of appropriate size according to the specific function of the under-tooth planer 60. In this way, not only the sharpness of the teeth of the under-tooth planer 60 can be improved, but also the discharge speed of sawdust can be accelerated through the bevel design. At the same time, the size of the front tooth surface bevel grinding angle is proportional to the sharpness of the teeth and inversely proportional to the toughness of the teeth. Therefore, the under-tooth planer 60 has a larger front tooth surface bevel grinding angle 61 of 12°.

[0094] According to the specific function of the under-tooth planer 60, an inner concave angle VI62 of the rear tooth surface of the under-tooth planer 60 is designed with an appropriately sized size. In this way, the friction between the side surface of the tooth and the saw path wall can be reduced to avoid clamping. At the same time, the size of the inner concave angle of the rear tooth surface is inversely proportional to the toughness. In order to avoid the saw clamping phenomenon of the under-tooth planer 60, a larger inner concave angle VI62 of the rear tooth surface of the under-tooth planer 60 is designed, and its size is 6°.

[0095] According to the specific function of the under-tooth planer 60, a suitable net cutting width IV64 of the under-tooth planer 60 is allocated to it, which is 2% of the total cutting width. The advantage of such a design is that it can reduce the cutting force that the under-tooth planer 60 needs to bear, so that the sharpness of the teeth can be further improved, the occurrence of pits and fuzzing can be avoided, and the processing quality of the saw path wall can be improved.

[0096] In particular, due to the design of the bevel grinding angle V61 of the front tooth surface of the under-tooth planer 60, a single tooth only cuts one side of the saw path wall, so the main cutting edges 63 of the under-tooth planer 60 in adjacent windows are in opposite directions. The advantage of this design is that through the alternating design, the stability and consistency of the cutting process can be improved, the vibration and fluctuation of the tool during cutting can be reduced, and the processing quality of the saw path wall can be improved. At the same time, it should be emphasized that the left and right ends of the under-tooth planer 60 in this embodiment are of different thicknesses, that is, the left end is thick and the right end is thin, and the main cutting edges 63 of the under-tooth planer 60 in the above text are in opposite directions, which means that the under-tooth planer 60 is alternately arranged, so it can be understood that the under-tooth planer 60 in one of the windows 50 is thick at the left end and thin at the right end, then the under-tooth planer 60 in the adjacent window is thin at the left end and thick at the right end, and so on. Therefore, in order to avoid the situation where the under-tooth planer 60 in two adjacent windows 50 has the same shape, the number of windows 50 should be an even number, and the number of tooth assemblies should also be an even number.

[0097] like Figure 5-6 As shown, the center angle of the pre-cutting tooth 31 is 10°, the center angle of the rough trimming tooth is 6°, and the center angle of the fine trimming tooth is 4°.

[0098] That is, the center angle I71 of the pre-cutting tooth 31 is 10°, the center angle II72 of the first rough trimming tooth 32 and the center angle III73 of the second rough trimming tooth 33 are both 6°, the center angle IV74 of the first finishing tooth and the center angle V75 of the second finishing tooth 35 are both 4°. With this arrangement, the gaps between the teeth can be reasonably allocated according to the different cutting amounts of different teeth, and the space can be fully utilized while reducing the influence of sawdust on the cutting quality. Therefore, the pre-cutting tooth 31 with the largest cutting range and the largest cutting amount has the largest center angle, the first rough trimming tooth 32 and the second rough trimming tooth 33 with a moderate cutting range and a moderate cutting amount have a moderate center angle, and the first finishing tooth 34 and the second finishing tooth 35 with the smallest cutting range and the smallest cutting amount have the smallest center angle.

[0099] like Figure 3-4 As shown: the rake angle I76 of the pre-cutting tooth 31 is 5°, the rake angle of the rough trimming tooth is 10°, and the rake angle of the fine trimming tooth is 20°;

[0100] The wedge angle I81 of the pre-cutting tooth 31 is 80°, the wedge angle of the roughing tooth is 75°, the wedge angle of the fine-cutting tooth is 65°, and the back angle is 5°.

[0101] That is, the front angle I76 of the pre-cutting tooth 31 is 5°, the front angle II77 of the first rough trimming tooth 32 and the front angle III78 of the second rough trimming tooth 33 are both 10°, the front angle IV79 of the first fine trimming tooth 34 and the front angle V80 of the second fine trimming tooth 35 are both 20°; the wedge angle I81 of the pre-cutting tooth 31 is 80°, the wedge angle II82 of the first rough trimming tooth 32 and the wedge angle III83 of the second rough trimming tooth 33 are both 75°, the wedge angle IV84 of the first fine trimming tooth 34 and the wedge angle V85 of the second fine trimming tooth 35 are 65°, and the back angle I86 of the pre-cutting tooth 31, the back angle II87 of the first rough trimming tooth 32, the back angle III88 of the second trimming tooth, the back angle IV89 of the first fine trimming tooth 34, and the back angle V90 of the second fine trimming tooth 35 are all 5°.

[0102] The rake angle parameter settings of each cutter tooth and the wedge angle parameter settings of each cutter tooth in this embodiment can specialize the functionality of the cutter tooth. The rake angle is proportional to the sharpness of the cutter tooth, and the wedge angle is proportional to the toughness of the cutter tooth. Therefore, according to the different cutting amounts of different cutter teeth, different bending strengths and sharpness are designed for the cutter teeth. Therefore, the rake angle I of the pre-cutting cutter tooth 31 with the greatest requirement for cutter tooth toughness is minimized and the wedge angle is maximized, the rake angle of the roughing cutter tooth with moderate requirement for cutter tooth toughness is moderate and the wedge angle is moderate, and the rake angle of the finishing cutter tooth with the smallest requirement for cutter tooth toughness is maximized and the wedge angle is minimized.

[0103] like Figure 7-16 As shown: the concave angle I91 of the rear tooth surface of the pre-cutting tooth 31 is 2°, the concave angle of the rear tooth surface of the rough trimming tooth is 4°, and the concave angle of the rear tooth surface of the fine trimming tooth is 6°;

[0104] The side edge concave angle I96 of the pre-cutting tooth 31 is 2°, the side edge concave angle of the roughing tooth is 5°, and the side edge concave angle of the finishing tooth is 10°.

[0105] Specifically, in this embodiment, the rear tooth surface inner concave angle I91 of the pre-cutting tooth 31 is 2°, the rear tooth surface inner concave angle II92 of the first rough trimming tooth 32 and the rear tooth surface inner concave angle III93 of the second rough trimming tooth 33 are both 4°, the rear tooth surface inner concave angle IV94 of the first finishing tooth 34 and the rear tooth surface inner concave angle V95 of the second finishing tooth 35 are both 6°, and the side edge inner concave angle I96 of the pre-cutting tooth 31 is 2°, the side edge inner concave angle II97 of the first rough trimming tooth 32 and the side edge inner concave angle III98 of the second rough trimming tooth 33 are both 5°, and the side edge inner concave angle IV99 of the first finishing tooth 34 and the side edge inner concave angle V100 of the second finishing tooth 35 are both 10°.

[0106] In this embodiment, the parameter setting of the inner concave angle of the rear tooth surface of each tooth can reduce the friction between the rear tooth surface and the saw path wall. The size of the inner concave angle of the rear tooth surface is inversely proportional to the toughness. Therefore, the pre-cutting tooth 31 with the highest requirement for tooth toughness has the smallest inner concave angle of the rear tooth surface, the roughing tooth with moderate requirement for tooth toughness has a moderate inner concave angle of the rear tooth surface, and the finishing tooth with the lowest requirement for tooth toughness has the largest inner concave angle of the rear tooth surface.

[0107] The side edge concave angle parameter setting of each tooth, designing different sizes of side edge concave angles for different teeth with different cutting amounts, can reduce the friction between the non-cutting part of the tooth root and the saw path wall, and reduce the possibility of the plate clamping the circular saw blade. Because the size of the side edge concave angle is inversely proportional to the toughness of the tooth, the pre-cutting tooth 31 with the highest requirement for tooth toughness has the smallest side edge concave angle, the roughing tooth with moderate requirement for tooth toughness has a moderate side edge concave angle, and the finishing tooth with the lowest requirement for tooth toughness has the largest side edge concave angle.

[0108] like Figure 17-18 As shown: the net cutting width I101 of the pre-cutting tooth 31 accounts for 85% of the total cutting width, the net cutting width II102 of the rough trimming tooth accounts for 10% of the total cutting width, and the net cutting width III103 of the fine trimming tooth accounts for 3% of the total cutting width.

[0109] In this embodiment, the parameter setting of the net cutting width of each tooth as a percentage of the total cutting width is used. According to the different functions of different teeth, appropriate net cutting widths are allocated to the teeth, which can improve the processing quality of the fine-cutting teeth. While increasing the pre-cutting range, the cutting range of rough trimming and fine trimming is reduced, so that the rough trimming and fine trimming teeth can focus on the processing quality of the saw path wall. The increase in the cutting amount of the teeth will reduce its processing quality. Therefore, the pre-cutting tooth 31 has the largest net cutting width, the rough trimming tooth has a moderate net cutting width, and the fine trimming tooth has the smallest net cutting width.

[0110] like Figure 7-16 As shown: the bevel grinding angle I89 of the front tooth surface of the roughing cutter tooth is 7°, and the bevel grinding angle II90 of the front tooth surface of the fine cutting cutter tooth is 12°;

[0111] The rear tooth surface bevel grinding angle I91 of the roughing cutter teeth is 5°, and the rear tooth surface bevel grinding angle II92 of the fine cutting cutter teeth is 10°.

[0112] In this embodiment, the front tooth surface bevel grinding angle I104 of the first rough trimming tooth 32 and the front tooth surface bevel grinding angle II105 of the second rough trimming tooth 33 are both 7°, the front tooth surface bevel grinding angle III106 of the first finishing tooth 34 and the front tooth surface bevel grinding angle IV107 of the second rough trimming tooth 33 are both 12°, and the rear tooth surface bevel grinding angle I108 of the first rough trimming tooth 32 and the rear tooth surface bevel grinding angle II109 of the second rough trimming tooth 33 are both 5°, and the rear tooth surface bevel grinding angle III110 of the first finishing tooth 34 and the rear tooth surface bevel grinding angle IV111 of the second finishing tooth 35 are both 10°.

[0113] The parameter setting of the front tooth surface bevel grinding angle of each cutter tooth adds and designs different front tooth surface bevel grinding angles according to the different functions of different cutter teeth, and reasonably distributes the properties of the cutter teeth, which can improve the sharpness of the rough and fine trimming cutter teeth. The increase in the sharpness of the cutter teeth will reduce their toughness. Therefore, the rough trimming cutter teeth that focus on cutting volume and require more tooth toughness have a smaller front tooth surface bevel grinding angle, and the fine trimming cutter teeth that focus on cutting quality and require more tooth sharpness have a larger front tooth surface bevel grinding angle.

[0114] For the parameter setting of the rear tooth surface bevel grinding angle of each tooth, different rear tooth surface bevel grinding angles are added and designed according to the different functions of different teeth, so as to further reduce unnecessary cutting on roughing and finishing teeth, so as to make them pay more attention to the processing quality, that is, it can reduce the friction between the part of the roughing and finishing tooth head that does not participate in cutting and the front edge of the saw path. The rear tooth surface bevel grinding angle is inversely proportional to the toughness. Therefore, the roughing teeth with larger cutting amount and more emphasis on tooth toughness have smaller rear tooth surface bevel grinding angle, and the finishing teeth with smaller cutting amount and more emphasis on tooth sharpness have larger rear tooth surface bevel grinding angle.

[0115] like Figure 21-23 As shown: the main edge chamfer cutting contour line of the pre-cutting tooth 31, the roughing tooth and the finishing tooth is a continuous straight line.

[0116] In this embodiment, specifically, the left main edge chamfer cutting contour line I117 of the pre-cutting tooth 31, the main edge chamfer cutting contour line III119 of the first rough trimming tooth 32, and the main edge chamfer cutting contour line V121 of the first fine trimming tooth 34 are a continuous straight line, and the right main edge chamfer cutting contour line II118 of the pre-cutting tooth 31, the main edge chamfer cutting contour line IV120 of the second rough trimming tooth 33, and the main edge chamfer cutting contour line VI122 of the second fine trimming tooth 35 are a continuous straight line. This design can avoid edge collapse, pits, and fuzzing caused by cutting misalignment and fiber stretching.

[0117] In addition, in the present embodiment, the vertical distance between the upper and lower surfaces of the workpiece being cut and the central axis of the circular saw blade is within a range limit, so that the vertical distance between the upper surface of the workpiece being cut and the central axis of the circular saw blade is not greater than the cutting radius of the under-tooth planer 60, and the vertical distance between the lower surface of the workpiece being cut and the central axis of the circular saw blade should be such that during the cutting process, the side edge of the teeth of the circular saw blade preferentially contacts the workpiece being cut. The upper limit is set to prevent the under-tooth planer 60 from cutting only a portion of the saw path wall, and the lower limit is set to allow the side edge of the teeth to preferentially contact the workpiece, thereby reducing vibration during the cutting process and improving the processing quality of the saw path wall.

[0118] In order to achieve the above mentioned contents, specifically: the main cutting circle mentioned below refers to the rotation path circle of the main cutting edge of the cutter tooth when the circular saw blade rotates one circle, and its radius is the main cutting circle radius.

[0119] The feed speed is V, the circular saw blade speed is r, and the feed amount d per 1° of the tooth is 25V / 9q; the cutting circle radius of the main edge of the pre-cutting tooth 31 is R1, and the chamfering depths are l1 and l2 in the order of the pre-cutting tooth 31 and the rough trimming tooth, then the cutting circle radius of the main edge of the first rough trimming tooth 32 should be R1-6d-l1, the cutting circle radius of the main edge of the second rough trimming tooth 33 is R1-12d-l1, the cutting circle radius of the main edge of the first finishing tooth 34 is R1-16d-l1-l2, and the cutting circle radius of the main edge of the second finishing tooth 35 is R1-20d-l1-l2, that is, by constraining the cutting circle of the main edge of the tooth, the chamfering cutting contour line of the main edge is made a continuous straight line, so that the cutting of the five diamond teeth is smoother, and the possibility of edge collapse of the veneer particleboard at the edge is further reduced.

[0120] Specific Fig.23 In the figure, there is a central angle of 6° between the pre-cutting tooth 31 and the first roughing tooth 32. When the circular saw blade is cutting the workpiece, the workpiece keeps moving forward and the circular saw blade keeps rotating. Therefore, when the pre-cutting tooth 31 contacts the workpiece surface, before the first roughing tooth 32 contacts the workpiece surface, the workpiece will move forward a distance until the first roughing tooth 32 contacts the workpiece surface. Why is the gap between two adjacent teeth contacting the workpiece and the distance the workpiece moves forward? Fig.17 The teeth have clear outlines. Fig.23 Reasons for smooth cutting contour line;

[0121] Of course, we only consider the surface here, not the cutting contour of the workpiece after the cutter teeth contact the workpiece, because this design is only to ensure the surface processing quality of the workpiece, as long as the cutting contour line of the cutter teeth is smooth on the surface of the workpiece

[0122] In addition, in order to achieve a smooth cutting contour line on the workpiece surface, the chamfer of all teeth should be 45°, which is easy to indicate the depth of the chamfer and to propose an implementation plan.

[0123] In addition, the vertical distances between the upper surface 131 and the lower surface 132 of the workpiece being cut and the central axis surface 133 of the circular saw blade are limited in range. Specifically, the diameter of the circular saw blade is D, the front angle of the finishing tooth is γ, the vertical distance H1 between the upper surface 131 of the workpiece being cut and the central axis surface 133 of the circular saw blade should not be greater than the main cutting circle radius of the under-tooth finishing cutter 60, and the vertical distance H2 between the lower surface 132 of the workpiece being cut and the central axis surface 133 of the circular saw blade should comply with H2≥D sinγ / 2. The upper limit is set to prevent the under-tooth finishing cutter 60 from cutting only a part of the saw path wall to ensure the processing quality of the secondary finishing, and the lower limit is set to ensure that the side edge of the diamond tooth contacts the workpiece first during the processing; in simple terms, the main cutting circle radius of the roughing and finishing teeth is controlled by the main cutting edge radius R1 of the pre-cutting tooth 31, the known chamfering depths of different teeth, and the calculated tooth feed per 1°, so as to achieve the purpose of smoothing the saw path of the workpiece being cut.

[0124] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0125] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that those skilled in the art can understand.

Claims

1. An anti-chipping diamond circular saw blade, characterized in that: include: A main body (1), wherein a mounting hole (2) is provided at the center of the main body (1); A blade tooth assembly, the blade tooth assembly being fixedly distributed on the circumferential side wall of the main body (1) in a centrally symmetrical structure, and the blade tooth assembly comprising a blade tooth seat and blade teeth, wherein one end of the blade tooth seat is fixedly connected to the main body (1) and the other end is provided with blade teeth; The blade teeth include pre-cutting blade teeth (31), rough trimming blade teeth and fine trimming blade teeth. The pre-cutting blade teeth (31), rough trimming blade teeth and fine trimming blade teeth are sequentially mounted on the blade tooth seat to achieve step-by-step cutting of the object to be cut.

2. The anti-chipping diamond circular saw blade according to claim 1, characterized in that: It also comprises a corundum sawing and grinding layer (40), one end of which is fixedly covered on the circumferential side wall of the main body (1), and the other end of which is fixedly connected to the cutter tooth seat, and the cutter teeth and the corundum sawing and grinding layer (40) are separated at the two ends of the cutter tooth seat.

3. The anti-chipping diamond circular saw blade according to claim 2, characterized in that: The number of the pre-cutting teeth (31) is at least one, the number of the rough trimming teeth is at least two, and the number of the fine trimming teeth is at least two.

4. The anti-chipping diamond circular saw blade according to claim 1, 2 or 3, characterized in that: The rough trimming teeth at least include a first rough trimming tooth (32) and a second rough trimming tooth (33), wherein the first rough trimming tooth (32) is located between the pre-cutting tooth (31) and the second rough trimming tooth (33), and the cutting edges of the first rough trimming tooth (32) and the second rough trimming tooth (33) are arranged on opposite sides; The finishing teeth at least include a first finishing tooth (34) and a second finishing tooth (35), the first finishing tooth (34) is located between the second roughing tooth (33) and the second finishing tooth (35), the cutting edges of the first finishing tooth (34) and the second finishing tooth (35) are also arranged on different sides, and the cutting edge of the first finishing tooth (34) is arranged on the same side as the cutting edge of the first roughing tooth (32); Both sides of the pre-cutting teeth (31) are provided with cutting edges; A window (50) is provided between the pre-cutting tooth (31) and the second finishing tooth (35) in the adjacent tooth assembly, and each group of teeth only includes one window (50).

5. The anti-chipping diamond circular saw blade according to claim 4, characterized in that: The window (50) comprises: A vertical portion (51), the vertical portion (51) being located on the tooth seat and close to the end of the pre-cutting tooth (31); A chip removal chamber (52), one end of which is connected to the vertical portion (51), and the chip removal chamber (52) is located at one end of the vertical portion (51) close to the center of the main body (1).

6. The anti-chipping diamond circular saw blade according to claim 5, characterized in that: The window also includes: An arc portion (53), the arc portion (53) is located on the end of the tooth seat close to the second finishing tooth (35), and one end of the arc portion (53) close to the center of the main body (1) is connected to one end of the discharge groove away from the vertical portion (51).

7. The anti-chipping diamond circular saw blade according to claim 5 or 6, characterized in that: A tooth-under-finishing planer (60) is arranged on the vertical portion (51), and the main cutting edges (63) of the tooth-under-finishing planers (60) in the adjacent windows (50) are arranged on opposite sides.

8. The anti-chipping diamond circular saw blade according to claim 7, characterized in that: The extension line of the vertical portion (51) is located between the pre-cutting tooth (31) and the second finishing tooth (35), and does not intersect with the teeth.

9. The anti-chipping diamond circular saw blade according to claim 8, characterized in that: The net cutting widths of the pre-cutting teeth (31), the rough trimming teeth, the fine trimming teeth and the under-tooth fine planing cutter (60) become smaller in sequence.

10. The anti-chipping diamond circular saw blade according to claim 2 or 3, characterized in that: The corundum sawing and grinding layer (40) is provided with 9 to 15 groups of blade tooth components.

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