Wear-resistant hard alloy circular saw blade convenient to coat

Abstract

The utility model relates to the technical field of saw blades, and provides a wear-resistant hard alloy circular saw blade convenient to coat, which comprises a saw ring provided with a mounting hole; the saw disc is detachably arranged in the mounting hole, and the saw disc is used for being mounted on a motor main shaft; and the sawtooth blade is detachably arranged on the periphery of the saw ring. By means of the technical scheme, the problems that in the prior art, the coating saw blade technology is limited by the machining size of coating equipment and is difficult to be effectively applied to large-diameter alloy saw blades, and performance improvement of large-size saw blades and expansion of the application field are limited to a certain degree are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of saw blades, and in particular to a wear-resistant hard alloy circular saw blade which is easy to coat. Background Art

[0002] Coated saw blades are a key tool widely used in metal cutting, wood processing, stone cutting and other fields. The surface is coated with one or more layers of special material coatings, such as TiN (titanium nitride), TiCN (titanium carbonitride), AlTiN (aluminum titanium nitride), etc., to improve the wear resistance, high temperature resistance, oxidation resistance and cutting performance of the saw blade. These coatings are achieved through advanced surface treatment technologies such as physical vapor deposition (PVD) and chemical vapor deposition (CVD), which significantly extend the service life of the saw blade, reduce production costs, and improve processing accuracy and efficiency.

[0003] However, the current coating saw blade technology is mainly applied to multiple main specifications such as φ300mm, φ340, φ355mm, φ380mm, φ400mm, φ450mm, etc. The existing coating equipment, especially the mainstream PVD and CVD equipment, has a limited chamber size and can usually only accommodate and effectively process saw blades within a certain diameter range. Large-diameter alloy saw blades that exceed the processing capacity of the equipment cannot be fully placed in the chamber for coating, or even if they are barely placed, they may cause problems such as uneven coating and local excessive thickness due to insufficient chamber space.

[0004] During the coating process, the distance between the target and the surface of the saw blade is critical to the coating quality. For large-diameter saw blades, it is difficult to accurately control the consistency of the distance between the target and each part, which may lead to large differences in coating thickness and component distribution in different areas, affecting the overall performance. Some coating processes (such as CVD) require preheating and cooling of the workpiece. Due to the large heat capacity of large-diameter saw blades, it is difficult to ensure temperature uniformity during heating and cooling, which may lead to poor bonding between the coating and the substrate, or deformation of the saw blade due to thermal stress.

[0005] At the same time, the processing time of large-sized saw blades may increase significantly, affecting production efficiency and economy. In summary, the current coated saw blade technology is limited by the processing size of the coating equipment and is difficult to be effectively applied to large-diameter alloy saw blades. This, to a certain extent, limits the improvement of the performance of large-sized saw blades and the expansion of their application areas, and also brings urgent technical challenges to related industries. Utility Model Content

[0006] The utility model proposes a wear-resistant carbide circular saw blade that is easy to coat, which solves the problem that the current coating saw blade technology in the related art is limited by the processing size of the coating equipment and is difficult to be effectively applied to large-diameter alloy saw blades, which to a certain extent limits the improvement of the performance of large-size saw blades and the expansion of their application fields.

[0007] The technical solution of the utility model is as follows: a wear-resistant carbide circular saw blade that is easy to coat, comprising:

[0008] A saw ring, wherein the saw ring has a mounting hole;

[0009] A saw disc, the saw disc is detachably arranged in the mounting hole, and the saw disc is used to be mounted on the main shaft of the motor;

[0010] A sawtooth piece is detachably arranged on the outer periphery of the saw ring.

[0011] Optionally, the saw disc has a first mounting portion, and the first mounting portion has a first connecting hole;

[0012] The saw ring has a second mounting portion, and the second mounting portion has a second connecting hole; the saw ring is detachably sleeved on the saw disk, the first mounting portion and the second mounting hole are axially opposite to each other, and the first connecting hole and the second connecting portion are axially opposite to each other;

[0013] A first fastener passes through the first connecting hole and the second connecting hole to connect the first mounting portion and the second mounting portion.

[0014] Optionally, there are two first mounting parts, which are distributed diagonally on the saw disk, and there are two second mounting parts, which are distributed diagonally in the mounting hole; after the saw ring is mounted on the saw disk, the first connecting part and the second connecting part form a closed whole.

[0015] Optionally, the saw ring has a plurality of mounting protrusions on the circumferential outer side, and the plurality of mounting protrusions are arranged at intervals; there are a plurality of sawtooth pieces, and each of the mounting protrusions is detachably provided with a sawtooth piece.

[0016] Optionally, the sawtooth piece has a mounting groove plug-connected with the mounting protrusion; the mounting protrusion and the sawtooth piece are both provided with a third connecting hole, the sawtooth piece is plugged behind the saw ring, and the two third connecting holes are opposite to each other;

[0017] A second fastener passes through the two third connecting holes to connect the mounting protrusion and the mounting groove.

[0018] Optionally, both circumferential sides of the sawtooth piece are provided with a connecting protrusion, and two adjacent sawtooth pieces are overlapped along the axial direction parallel to the saw disk through the two connecting protrusions.

[0019] Optionally, the connecting protrusion has a chip guide opening, and in two connecting protrusions overlapped with each other, the two chip guide openings are connected to each other.

[0020] Optionally, the cutting end of the sawtooth blade has a chip guide groove.

[0021] Optionally, the connecting protrusion further has a fourth connecting hole, and further comprises: a connecting bolt threadedly connected to the fourth connecting holes of two adjacent overlapping connecting protrusions.

[0022] Optionally, the saw disc has a center hole and a plurality of transmission holes, and the plurality of transmission holes are evenly distributed around the center hole.

[0023] The working principle and beneficial effects of the utility model are:

[0024] In the utility model, the traditional one-piece saw blade structure is decomposed into three detachable components: a saw ring, a saw disc and a saw blade. Thus, modular processing of each part of the saw blade is achieved. This feature allows the saw ring, saw disc and saw blade to be coated separately during the coating process, rather than operating the entire integrated saw blade. It effectively solves the problem that large-diameter alloy saw blades are difficult to achieve accurate and efficient coating in existing coating equipment. By decomposing large saw blades into small processable components, existing coating equipment can adapt to and complete the coating operation of large-size saw blades with high quality, overcoming the limitation of equipment processing size and broadening the application field of high-performance coated saw blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the sawtooth blade of the utility model;

[0028] Figure 3 This is a schematic diagram of the saw ring structure of the utility model;

[0029] Figure 4 This is a schematic diagram of the saw disc structure of the utility model;

[0030] In the figure: 1. saw ring; 101. mounting hole; 102. second mounting part; 103. second connecting hole; 104. mounting protrusion; 2. saw disk; 201. first mounting part; 202. first connecting hole; 203. center hole; 204. transmission hole; 3. saw tooth; 301. mounting groove; 302. connecting protrusion; 303. chip guide port; 304. chip guide groove; 305. fourth connecting hole; 4. first fastener; 5. third connecting hole; 6. second fastener; 7. connecting bolt. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0032] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0033] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0035] Reference Figure 1~Figure 4 A wear-resistant carbide circular saw blade that is easy to coat is proposed, comprising: a saw ring 1, the saw ring 1 has a mounting hole 101; a saw disc 2, the saw disc 2 is detachably arranged in the mounting hole 101, and the saw disc 2 is used to be installed on the motor spindle; a saw tooth piece 3, the saw tooth piece 3 is detachably arranged on the outer periphery of the saw ring 1.

[0036] In this embodiment, the saw ring 1 can be made of high-strength hard alloy material, and can be in a circular shape, and a precisely machined mounting hole 101 is provided on the inner side thereof. The size and shape of the mounting hole 101 precisely match the outer contour of the saw disc 2, ensuring that the saw disc 2 can be stably and gaplessly installed therein. The saw disc 2 can also be made of hard alloy material, and the shape is adapted to the mounting hole 101, and a connecting portion (such as a keyway, a taper handle, etc.) matching the motor spindle is provided in the middle.

[0037] When performing the coating process, follow these steps:

[0038] a. Disassembly: Remove the saw disc 2 from the mounting hole 101 of the saw ring 1, and then remove the saw tooth piece 3 to obtain an independent saw ring 1, a saw disc 2 and a plurality of saw tooth pieces 3.

[0039] b. Pretreatment: Perform necessary surface cleaning and pretreatment on the saw ring 1, saw disc 2 and saw blade 3 to ensure that there is no impurity such as oil stain, oxide layer, etc. on the surface that may affect the adhesion of the coating.

[0040] c. Coating: Each pre-treated component is sent to the coating equipment and coated according to the specified process parameters. Due to the small size of each component, it is easy to control the distance between the target and the surface to ensure the uniformity of the coating thickness and composition.

[0041] d. Post-processing: After the coating is completed, the components are subjected to necessary heat treatment (such as sintering, curing, etc.) to enhance the bonding strength between the coating and the substrate, and necessary cooling is performed to prevent deformation caused by thermal stress.

[0042] e. Assembly: Reinstall the coated saw disc 2 into the mounting hole 101 of the saw ring 1, and then fix the saw blade 3 to the outer periphery of the saw ring 1 to complete the assembly of the entire saw blade.

[0043] Through the above embodiments, the wear-resistant carbide circular saw blade that is easy to coat of the present invention successfully realizes the modular design of the saw blade, so that each component can be processed independently during the coating process, which significantly improves the coating quality and efficiency, solves the problem of coating large-diameter saw blades, and improves the maintenance convenience and economy of the saw blade.

[0044] Furthermore, the saw disk 2 has a first mounting portion 201, and the first mounting portion 201 has a first connecting hole 202; the saw ring 1 has a second mounting portion 102, and the second mounting portion 102 has a second connecting hole 103; the saw ring 1 is detachably mounted on the saw disk 2, the first mounting portion 201 and the second mounting hole 101 are axially opposite to each other, and the first connecting hole 202 and the second connecting portion are axially opposite to each other; the first fastener 4 passes through the first connecting hole 202 and the second connecting hole 103, and connects the first mounting portion 201 and the second mounting portion 102.

[0045] In this embodiment, the saw disk 2 is provided with a first mounting portion 201, on which is provided at least one first connecting hole 202 extending parallel to the axial direction of the saw disk 2. The number and position of the first connecting holes 202 are determined as required to ensure the effective connection between the saw disk 2 and the motor spindle and the balance of the saw disk 2 itself. A second mounting portion 102 is provided on the inner side of the saw ring 1, which matches the shape of the first mounting portion 201 of the saw disk 2. The second mounting portion 102 is provided with at least one second connecting hole 103 extending parallel to the axial direction of the saw disk 2. The second connecting holes 103 are the same in number and position as the first connecting holes 202, ensuring that the two can be accurately aligned.

[0046] Furthermore, there are two first mounting parts 201, which are distributed diagonally on the saw disk 2, and there are two second mounting parts 102, which are distributed diagonally in the mounting hole 101; after the saw ring 1 is sleeved on the saw disk 2, the first connecting part and the second connecting part form a closed whole.

[0047] In this embodiment, the connection structure between the saw disk 2 and the saw ring 1 adopts two diagonally distributed first mounting parts 201 and second mounting parts 102 to enhance the overall rigidity and stability of the saw blade. The design of the two first mounting parts 201 allows the saw disk 2 to be subjected to balanced tension in the axial direction, which helps to maintain the stability of the saw blade when rotating at high speed. The second mounting parts 102 are also distributed diagonally, and the second connection holes 103 are the same in number and position as the first connection holes 202, ensuring that the two can be accurately aligned.

[0048] The saw ring 1 is detachably mounted on the saw disc 2, so that the two first mounting parts 201 are axially opposite to the two second mounting parts 102, and each first connecting hole 202 is also axially opposite to the corresponding second connecting hole 103. The saw disc 2 and the saw ring 1 can be firmly connected together by passing through the corresponding first connecting hole 202 and the second connecting hole 103 through the first fastener 4 (such as a bolt, a pin, etc.). When tightening the first fastener 4, it should be ensured that the overall structure composed of the two first mounting parts 201 and the two second mounting parts 102 is closed and has no obvious gap, and maintains good concentricity to ensure the stability of the saw blade when rotating at high speed.

[0049] During the installation process, first align the second mounting part 102 with the first mounting part 201, and place the first mounting part 201 on the second mounting part 102. At this time, the other first mounting part 201 is synchronously located on the second mounting part 102. Further, rotate the saw disk 2 so that the two first mounting parts 201 face the other second mounting part 102 respectively, and move the saw disk 2 so that the first mounting part 201 and the second mounting part 102 form an integral structure, thereby achieving position fixation in the rotation direction and improving stability.

[0050] Furthermore, the saw ring 1 has a plurality of mounting protrusions 104 on the circumferential outer side, and the plurality of mounting protrusions 104 are arranged at intervals; there are a plurality of sawtooth pieces 3, and each mounting protrusion 104 is detachably provided with a sawtooth piece 3.

[0051] In this embodiment, a plurality of installation protrusions 104 arranged at intervals are provided on the outer side of the saw ring 1 to detachably install the saw tooth piece 3. A plurality of installation protrusions 104 are evenly distributed on the outer side of the saw ring 1, and each installation protrusion 104 is in a certain shape (such as a rectangle, a semicircle, etc.), and its height, width and shape are designed to ensure a firm connection and good contact with the saw tooth piece 3. The intervals between the installation protrusions 104 are set according to the size and arrangement requirements of the saw tooth piece 3 to ensure that the saw tooth piece 3 is evenly distributed on the saw ring 1, which is conducive to smooth operation during the cutting process. The connection structure between the saw ring 1 and the saw tooth piece 3 adopts a detachable connection between the installation protrusion 104 and the saw tooth piece 3, so that each saw tooth piece 3 can be independently installed and disassembled, which is convenient for independent processing of the saw tooth piece 3 during the coating process, improving the coating quality and efficiency, and facilitating maintenance and replacement. In addition, the design of the installation protrusion 104 also makes the distribution of the saw tooth piece 3 on the saw ring 1 more even, which is conducive to improving the stability of the cutting process.

[0052] Furthermore, the sawtooth piece 3 has a mounting groove 301 plugged into the mounting protrusion 104; the mounting protrusion 104 and the sawtooth piece 3 are both provided with a third connecting hole 5, and after the sawtooth piece 3 is plugged into the saw ring 1, the two third connecting holes 5 are opposite to each other;

[0053] The second fastener 6 passes through the two third connecting holes 5 to connect the mounting protrusion 104 and the mounting groove 301 .

[0054] In this embodiment, the sawtooth piece 3 is fixed to the mounting protrusion 104 of the saw ring 1 by plug-in connection and the second fastener 6, so that the sawtooth piece 3 can be detachably installed. Specifically, at least one third connection hole 5 is provided on the mounting protrusion 104 on the circumferential outer side of the saw ring 1, which penetrates in the axial direction. Each sawtooth piece 3 is provided with a mounting groove 301 matching the shape and size of the mounting protrusion 104, and at least one third connection hole 5 corresponding to the third connection hole 5 is provided in the mounting groove 301. The design of the mounting groove 301 enables the sawtooth piece 3 to be accurately and stably inserted into the corresponding mounting protrusion 104, ensuring good contact between the sawtooth piece 3 and the saw ring 1. After the sawtooth piece 3 is plugged into the mounting protrusion 104, the third connection hole 5 in the mounting groove 301 is opposite to the third connection hole 5 on the mounting protrusion 104 in the axial direction. The sawtooth piece 3 is firmly connected to the mounting protrusion 104 by passing the second fastener 6 (such as a bolt, a pin, etc.) through the corresponding third connection hole 5. When tightening the second fastener 6, it should be ensured that there is no obvious gap between the saw blade 3 and the mounting protrusion 104, and good contact and stable connection are maintained to ensure the stability of the saw blade when rotating at high speed.

[0055] Furthermore, both sides of the circumferential direction of the sawtooth piece 3 are provided with a connecting protrusion 302 , and two adjacent sawtooth pieces 3 are overlapped along the axial direction parallel to the saw disk 2 via the two connecting protrusions 302 .

[0056] In this embodiment, two adjacent saw blades 3 are overlapped and connected along the axial direction of the mounting plate via a connecting protrusion 302. The overlapped connection in the axial direction further improves the force resistance of the saw blade 3 in the axial direction and improves the stability of the saw blade body during the cutting process.

[0057] Furthermore, the connection protrusion 302 has a chip guide opening 303 , and in the two overlapping connection protrusions 302 , the two chip guide openings 303 are connected to each other.

[0058] In this embodiment, the connection protrusion 302 has a chip guide opening 303. The chip guide opening 303 is designed mainly to effectively remove the chips, which helps to guide the waste and debris generated during the cutting process out of the cutting area, thereby maintaining the smooth progress of the cutting process. The two chip guide openings 303 are interconnected to improve the chip guide efficiency.

[0059] Furthermore, the cutting end of the sawtooth blade 3 has a chip guide groove 304 .

[0060] In this embodiment, the cutting end of the sawtooth blade 3 refers to the end with cutting teeth, and there is a chip guide groove 304 between adjacent teeth to improve the chip guiding effect.

[0061] Furthermore, the connection protrusion 302 also has a fourth connection hole 305 and also includes: a connection bolt 7, which is threadedly connected to the fourth connection holes 305 of two adjacent overlapping connection protrusions 302.

[0062] In this embodiment, after the saw blade 3 is mounted on the mounting protrusion 104 and fixed with the second fastener 6, the connecting bolt 7 is passed through the fourth connecting hole 305 on the adjacent mounting protrusion 104 to thread the adjacent mounting protrusions 104 together. The use of the connecting bolt 7 further strengthens the connection strength between the mounting protrusions 104 on the saw ring 1, making the overall structure of the saw blade more stable when rotating at high speed, which is conducive to improving the stability of the cutting process.

[0063] Furthermore, the saw disc 2 has a central hole 203 and a plurality of transmission holes 204 , and the plurality of transmission holes 204 are evenly distributed around the central hole 203 .

[0064] In this embodiment, a center hole 203 and a plurality of transmission holes 204 are added to the saw disc 2 to accommodate different installation and driving methods. The shape and size of the center hole 203 match the motor spindle and are used to install the saw disc 2 on the motor spindle. Several transmission holes 204 are evenly distributed on the saw disc 2 around the center hole 203. The number, size and position of the transmission holes 204 are determined according to actual needs, and can be in the form of threaded holes, keyway holes, pin holes, etc., which are used to cooperate with the corresponding structure on the motor spindle to realize the transmission connection between the saw disc 2 and the motor spindle.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A wear-resistant carbide circular saw blade that is easy to coat, characterized in that: include: A saw ring (1), wherein the saw ring (1) has a mounting hole (101); A saw disc (2), the saw disc (2) being detachably arranged in the mounting hole (101), and the saw disc (2) being used for being mounted on a main shaft of a motor; A sawtooth piece (3), wherein the sawtooth piece (3) is detachably arranged on the outer periphery of the saw ring (1).

2. The wear-resistant carbide circular saw blade that is easy to coat according to claim 1, characterized in that: The saw disc (2) has a first mounting portion (201), and the first mounting portion (201) has a first connecting hole (202); The saw ring (1) has a second mounting portion (102), and the second mounting portion (102) has a second connecting hole (103); the saw ring (1) is detachably sleeved on the saw disk (2), the first mounting portion (201) and the second connecting hole (103) are axially opposite to each other, and the first connecting hole (202) and the second mounting portion (102) are axially opposite to each other; A first fastener (4), wherein the first fastener (4) passes through the first connecting hole (202) and the second connecting hole (103) to connect the first mounting portion (201) and the second mounting portion (102).

3. The wear-resistant carbide circular saw blade that is easy to coat according to claim 2, characterized in that: There are two first mounting parts (201) which are distributed diagonally on the saw disk (2), and there are two second mounting parts (102) which are distributed diagonally in the mounting hole (101); after the saw ring (1) is sleeved on the saw disk (2), the first mounting part (201) and the second mounting part (102) form a closed whole.

4. The wear-resistant carbide circular saw blade that is easy to coat according to claim 1, characterized in that: The saw ring (1) has a plurality of mounting protrusions (104) on the circumferential outer side, and the plurality of mounting protrusions (104) are arranged at intervals; the saw tooth pieces (3) have a plurality of saw tooth pieces (3), and each of the mounting protrusions (104) is detachably provided with a saw tooth piece (3).

5. The wear-resistant carbide circular saw blade that is easy to coat according to claim 4, characterized in that: The sawtooth piece (3) has a mounting groove (301) plug-connected to the mounting protrusion (104); the mounting protrusion (104) and the sawtooth piece (3) are both provided with a third connecting hole (5); after the sawtooth piece (3) is plugged into the saw ring (1), the two third connecting holes (5) are opposite to each other; A second fastener (6), wherein the second fastener (6) passes through the two third connection holes (5) to connect the mounting protrusion (104) and the mounting groove (301).

6. The wear-resistant carbide circular saw blade that is easy to coat according to claim 1, characterized in that: The sawtooth pieces (3) are each provided with a connecting protrusion (302) on both sides in the circumferential direction, and two adjacent sawtooth pieces (3) are overlapped in a direction parallel to the axial direction of the saw disk (2) via the two connecting protrusions (302).

7. The wear-resistant carbide circular saw blade that is easy to coat according to claim 6, characterized in that: The connecting protrusion (302) has a chip guide opening (303), and in two connecting protrusions (302) overlapped with each other, the two chip guide openings (303) are connected to each other.

8. The wear-resistant carbide circular saw blade that is easy to coat according to claim 1, characterized in that: The cutting end of the sawtooth blade (3) is provided with a chip guide groove (304).

9. The wear-resistant carbide circular saw blade that is easy to coat according to claim 6, characterized in that: The connecting protrusion (302) also has a fourth connecting hole (305), and also includes: a connecting bolt (7) threadedly connected to the fourth connecting holes (305) of two adjacent overlapping connecting protrusions (302).

10. The wear-resistant carbide circular saw blade that is easy to coat according to claim 1, characterized in that: The saw disc (2) has a central hole (203) and a plurality of transmission holes (204), and the plurality of transmission holes (204) are evenly distributed around the central hole (203) and on the circumference of the central hole (203).

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