A damped combination multi-blade saw and cutting method

Abstract

The application discloses a combined multi-blade saw with damping, which comprises a multi-blade saw body, wherein the multi-blade saw body comprises blade monomers with diameters changing in sequence, and the contour formed by the edges of each blade monomer corresponds to the edge contour of a sawed body in the radial section of the multi-blade saw body. In the application, a plurality of blade monomers are arranged on the multi-blade saw body, wherein the diameters of the blade monomers are different, and the cutting surface formed by the edges of the blade monomers is not a complete plane structure after the blade monomers are combined to form the multi-blade saw body, so that the vibration in the cutting process can be reduced, the stability of the blade monomers can be improved, and the heat dissipation effect can be improved.

Description

Technical Field

[0001] This invention relates to the field of saw blade technology, and more particularly to a vibration-damping multi-blade saw and a cutting method thereof. Background Technology

[0002] Currently, wood is widely used in various technological fields, including furniture, decoration, packaging, and industry. Sawed parts are particularly popular in the furniture industry. The processing of sawed parts requires the use of cutting tools, and traditional multi-blade saws suffer from problems such as uneven blade paths and poor heat dissipation during the cutting process.

[0003] For example, publication number "CN220241734U" discloses "a multi-blade saw for wood processing," including a frame and multiple sets of saw blades. Its key feature is that it further includes a drive device and a conveying device, both mounted on the frame, with the multiple sets of saw blades mounted on the drive device. The conveying device transports the wood, and the drive device drives the multiple sets of saw blades, which then cut the wood. However, in practical applications, because all the saw blades are the same size, significant vibration occurs during wood cutting, affecting the cutting path, and heat dissipation is poor. Summary of the Invention

[0004] In view of the problems mentioned in the background art, such as strong vibration affecting the cutting path and poor heat dissipation, the present invention provides a vibration-damping combined multi-blade saw, which can reduce vibration during the cutting process, improve the stability of individual blades, and improve heat dissipation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] A vibration-damping combined multi-blade saw includes a multi-blade saw body, the multi-blade saw body including individual blades with successively varying diameters, and on the radial cross section of the multi-blade saw body, the contour formed by connecting the edges of each individual blade corresponds to the contour of the edge of the object being sawed. In this application, a multi-blade saw body is provided with multiple blade units, each with a different diameter. After assembling the blade units to form the multi-blade saw body, the cutting surface formed by the edges of the blade units is not a complete planar structure due to the different diameters of each blade unit. During the sawing process, since the sawed object (generally wood, specifically a log with a near-circular structure) is generally near-circular in shape, its edge contour is also not planar. The multi-blade saw body needs to penetrate the sawed object radially during the cutting process, and then move along the axis of the sawed object for cutting. Because the thickness of the sawed object's edge contour varies at different points, in the prior art, blade units of the same size are used. Therefore, in areas with thinner cutting areas, the contact area between the blade unit and the wood is small, while the limiting effect is small in other areas in contact with the wood. Furthermore, under unnecessary circumstances, the distance between the blade unit and the central pivot is too large, resulting in strong vibration during the cutting process. Simultaneously, because the distance between each blade unit is the same, heat dissipation is limited. Cutting can only be performed through the gaps between individual blades. In this application, since the diameters of the individual blades are of different sizes, different individual blades can be used to adapt to the shape and contour of the object being cut. That is, in areas where the thickness of the object being cut is small, smaller diameter individual blades are used for cutting. Because smaller diameter individual blades are used, the vibration area of ​​the individual blades is reduced. At the same time, the individual blades can adapt to the cutting thickness, reducing the number of parts that are not connected to the object being cut during the cutting process, thereby reducing the non-limiting area and reducing the generation of vibration. That is, while ensuring complete contact with each area of ​​the object being cut, the individual blades of the multi-blade saw body in this application minimize the parts that are not connected to the object being cut, and at the same time reduce the diameter of some individual blades, thereby reducing vibration and reducing the non-straightness of the cutting path caused by vibration during the cutting process of the multi-blade saw body. In addition, since there is not only an axial gap between the individual blades, but also a radial drop in the radial direction due to the different diameters of the individual blades, the gap between two individual blades of different diameters is increased, improving the heat dissipation efficiency.

[0007] Preferably, the blade unit includes a central blade disposed in the middle of the multi-blade saw body, and the blade unit also includes side blades disposed on both sides of the central blade, with the diameter of the side blades decreasing sequentially from the central blade along the side extension direction. Each blade unit includes a central blade and side blades. The central blade is located in the middle area, while the side blades are located on both sides of the central blade. The diameter of the side blades decreases sequentially as the central blade extends to both sides, allowing the structural shape of the multi-blade body to adapt to the outer contour of the workpiece. After cutting the workpiece radially, the side blades cut the thinner areas on both sides of the workpiece, while the central blade cuts the thicker area in the middle of the workpiece. This increases the connection ratio between the blade units in different areas and the workpiece, thereby ensuring the stability of the blade units during the cutting process and reducing vibration. At the same time, because the central blade first contacts the thicker area in the middle of the workpiece during radial movement, and only after cutting a certain distance do the larger diameter blade units on both sides begin to cut, by which time the central blade has already moved a longer distance and has a larger connection area with the workpiece, ensuring the relative stability between the two.

[0008] Preferably, the blade unit includes a central blade with staggered left and right oblique teeth. The staggered arrangement of the left and right oblique teeth on the central blade ensures stability during cutting, as the saw body is clamped and compressed. Therefore, the blade unit experiences pressure from the saw body during cutting. Since the central blade is positioned in the middle, the clamping forces on both sides are balanced. The staggered arrangement of the left and right oblique teeth ensures a smooth cut. Because the pressure is equal on both sides, the cut surfaces on both sides of the central blade have the same and high flatness.

[0009] Preferably, the blade unit includes a left blade and a right blade. The left blade is provided with a right-hand helical tooth, and the right blade is provided with a left-hand helical tooth. During the cutting process, the workpiece is clamped and compressed to ensure stability. Therefore, the blade unit is subjected to compressive force from the workpiece. Since the left and right blades are located on the left and right sides of the workpiece respectively, the compressive force is unbalanced, with a greater compressive force on the left side of the left blade and a greater compressive force on the right side of the right blade. Therefore, by setting the left blade with a right-hand helical tooth and the right blade with a left-hand helical tooth, more damage to the blade unit from the compressive force can be avoided. Simultaneously, setting the left blade with a right-hand helical tooth ensures the flatness of the cut on the right side, while setting the right blade with a left-hand helical tooth ensures the flatness of the cut on the left side. Although the flatness of the cut surface on the other side is poor, this reduces damage to the blade unit from that side, protecting the structural lifespan.

[0010] Preferably, the multi-blade saw body is connected to a central pivot, which includes a variable-diameter mounting surface corresponding to the contour of the saw body's edge. The multi-blade saw body connects each individual blade via the central pivot. Generally, the central pivot is a conventional pivot with the same diameter at all points. Since the diameters of the individual blades are different, the distance between the edge of each blade and the connection point of the central pivot is reduced. Because the saw body has a near-circular shape, a significant portion of the blades on both sides remains unconnected to the log. Therefore, this application proposes a solution where the central pivot has variable-diameter mounting surfaces with different diameters at different points. In areas where the log is thicker and the blade diameter is larger, the diameter of the mounting surface is smaller, leaving sufficient space. Conversely, in areas where the log is thinner and the blade diameter is smaller, the diameter is larger, compressing the installation space. This maximizes the proportion of the connection area between the blade and the saw body to the entire blade's cutting surface, thereby ensuring the cutting stability of the blade, reducing vibration, and ensuring a straight cutting path.

[0011] Preferably, the intermediate shaft is detachably connected to several reducing mounting blocks, each of which is connected to a corresponding blade unit. The edges of each reducing mounting block are connected to form a reducing mounting surface. The intermediate shaft is detachably connected to the reducing mounting blocks, and the detachable connection includes, but is not limited to, threaded connection, sliding connection, and snap-fit ​​connection. After connection, pressure blocks can be set at both ends of the intermediate shaft to ensure the connection stability of the reducing mounting blocks. The area where the blade unit is connected to the reducing mounting block is a fixed area, which has good stability. At the same time, due to the fixing effect of the reducing mounting block, the blade unit has good stability and less vibration impact at this point. The area not connected to the reducing mounting block is a non-fixed area, which is the cutting area of ​​the blade unit. Therefore, due to the presence of the reducing mounting block, the cutting area minimizes the vibrating area of ​​the blade unit while ensuring complete cutting of the sawed object, reducing vibration during operation. At the same time, since the structure of the sawed object is generally circular, the farther the blade units on both sides are from the middle area, the more unbalanced the force becomes. This increases the fixing area of ​​the reducing mounting block on the blade unit, thus ensuring stability at this point.

[0012] Preferably, the intermediate rotating shaft includes an intermediate fixing block, and the intermediate rotating shaft includes screws disposed on both sides of the intermediate fixing block, the screws being threadedly connected to reducing mounting blocks. The intermediate rotating shaft includes an intermediate fixing block, wherein the intermediate fixing block is fixed in the middle area, and the screws on both sides of the intermediate fixing block are used to connect different reducing mounting blocks. The reducing mounting blocks can be configured to engage with the blade unit, or the blade unit can be disposed between two reducing mounting blocks. The clamping effect of the reducing mounting blocks ensures the stability of the blade unit.

[0013] Preferably, both the screw and the reducing mounting block are provided with limiting grooves. When the screw and the reducing mounting block are connected in place, the limiting grooves are aligned, and limiting pins engage within the limiting grooves. The limiting grooves on the screw and the reducing mounting block, with a specified pitch, ensure that after the reducing mounting blocks are connected in place, the limiting grooves on each reducing mounting block are aligned with the limiting groove on the screw, and can engage with the limiting pins. This prevents the multi-blade saw body from rotating relative to the central rotating shaft during the cutting process driven by the intermediate shaft, which could lead to loosening or jamming due to centrifugal force and resistance. This facilitates subsequent replacement.

[0014] Preferably, the blade unit is provided with a heat dissipation groove extending to the edge of the blade unit, and a circular hole is provided at the end of the heat dissipation groove away from the edge of the blade unit. Providing a heat dissipation groove on the blade unit, wherein the heat dissipation groove extends to the edge of the blade unit and has a circular hole at the end, ensures heat dissipation and noise reduction effects, while also improving structural strength.

[0015] This application also discloses a cutting method, which includes the following steps:

[0016] S1. Select the corresponding blade unit according to the required cutting edge contour;

[0017] S2. Connect the individual blades to the central rotating shaft to assemble a multi-blade saw body, with the edge contour of the multi-blade saw body corresponding to the edge contour of the body being sawed.

[0018] S3. Cut along the radial direction of the saw body until all individual blades penetrate the saw body, then stop radial movement and proceed with axial movement cutting.

[0019] This application also discloses a cutting method. Specifically, firstly, an appropriate number of individual blades are selected according to the size of the log, and the blades of appropriate size are selected according to their positions on different logs. The standard for the individual blades is that after radial cutting, a small portion extends through the edge of the log, and the extension size of each individual blade is kept as uniform as possible. Then, the multi-blade body cuts along the radial direction of the log until all individual blades radially penetrate the log and extend outwards. Then, the radial movement is stopped, and then axial cutting is performed along the axis of the log. During the cutting process, since the contact area between each individual blade and the log remains stable, and the distance between the individual blades on both sides and the central pivot changes adaptively, the distance is greatly reduced compared with the prior art, thus reducing vibration.

[0020] The beneficial effects of this invention are as follows:

[0021] (1) It ensures that the saw blade vibration will not cause the tool path to be crooked during the processing, resulting in inconsistent width of the saw body or poor surface effect;

[0022] (2) The multi-blade body adopts a combination of a large middle and small sides to increase the heat dissipation area and reduce the life of the saw blade caused by heat dissipation problems;

[0023] (3) Different blade shapes are used for individual blades at different positions, which ensures the quality of each cut surface of the workpiece. Attached Figure Description

[0024] Figure 1 This is a first structural schematic diagram of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the centrally located blade in this invention.

[0026] Figure 3 This is a schematic diagram of the structure of the left blade in this invention.

[0027] Figure 4 This is a schematic diagram of the right-side blade in this invention.

[0028] Figure 5 This is a schematic diagram of the second structure of the present invention.

[0029] Figure 6 This is a schematic diagram of the structure of Example 2.

[0030] Figure 7 This is a cross-sectional view of Example 2.

[0031] Figure 8 This is a side view of Embodiment 2.

[0032] In the picture:

[0033] 1. Multi-blade saw body, 11. Blade unit, 111. Heat dissipation groove, 112. Circular hole, 12. Center blade, 13. Side blade, 131. Left blade, 132. Right blade;

[0034] 2. The object to be sawed;

[0035] 3. Intermediate pivot, 31. Different diameter mounting surface, 32. Different diameter mounting block, 33. Intermediate fixing block, 34. Screw, 35. Limiting groove, 36. Limiting pin. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1:

[0038] like Figure 1 , 2As shown in Figures 3, 4, and 5, a vibration-damping combined multi-blade saw includes a multi-blade saw body 1. The multi-blade saw body 1 includes individual blades 11 with progressively varying diameters. On the radial cross-section of the multi-blade saw body 1, the contour formed by the connecting edges of each individual blade 11 corresponds to the contour of the edge of the workpiece 2 being sawed. Each individual blade 11 is connected to a central rotating shaft 3 to form the multi-blade saw body 1. Each individual blade 11 includes a central blade 12 located in the middle of the multi-blade saw body 1, and also includes side blades 13 located on both sides of the central blade 12. The diameter of the side blades 13 decreases progressively from the central blade 12 along the side extension direction. Each individual blade 11 includes a central blade 12 with staggered left and right oblique teeth. Each individual blade 11 includes a left blade 131 and a right blade 132. The left blade 131 has a right oblique tooth, and the right blade 132 has a left oblique tooth. A heat dissipation groove 111 is provided on the blade unit 11, extending to the edge of the blade unit 11. A circular hole 112 is provided at the end of the heat dissipation groove 111 away from the edge of the blade unit 11. In this embodiment, the alloy cutter head is radially offset and inclined, with the alloy cutter head circumferentially inclined towards the chip direction. The radial offset inclination angle of the alloy cutter head is α, 10°≤α≤20°. The angle between the radial surface extending from the inner end of the front side of the alloy cutter head towards the center of the saw blade body and the front side of the diamond cutter head assembly is α. In this embodiment, α is 15°.

[0039] In this application, the multi-blade saw body 1 is provided with multiple blade units 11, wherein the diameters of the blade units 11 are of different sizes. After the blade units 11 are assembled to form the multi-blade saw body 1, since the diameters of the individual blade units 11 are different, the cutting surface formed by the edges of the blade units 11 is not a complete planar structure. Furthermore, during the cutting of the sawn object 2, since the shape of the sawn object 2 (generally wood, specifically a log with a near-circular structure) is generally near-circular, the edge contour of the sawn object 2 is also not a planar structure. Therefore, during the cutting process, the multi-blade saw body 1... The cutting process requires radial penetration through the saw body 2, followed by movement along the axis of the saw body 2 for cutting. Since the thickness of the edge contour of the saw body 2 varies at different points, and existing technologies use blade units 11 of the same size, the contact area between the blade unit 11 and the wood is small in areas with thinner cutting thicknesses, while the limiting effect is minimal in other areas in contact with the wood. Furthermore, the distance between the blade unit 11 and the central rotating shaft 3 is excessively large when not necessary, resulting in strong vibrations during cutting. Additionally, because the distance between each blade unit 11 is the same, heat dissipation is limited. Cutting can be performed through the gaps between the blade units 11. In this application, since the diameters of the blade units 11 are of different sizes, different blade units 11 can be used to adapt to the shape and contour of the workpiece 2. That is, in areas where the thickness of the workpiece 2 is small, a smaller diameter blade unit 11 is used for cutting. Because a smaller diameter blade unit 11 is used, the vibration area of ​​the blade unit 11 is reduced. At the same time, the blade unit 11 can adapt to the cutting thickness, reducing the parts that are not connected to the workpiece 2 during the cutting process, thereby reducing the non-limiting area and reducing the generation of vibration. That is, in this application, each blade unit 11 of the multi-blade saw body ensures complete contact with each area of ​​the workpiece 2 while minimizing the parts that are not connected to the workpiece 2, and at the same time reducing the diameter of some blade units 11, thereby reducing vibration and reducing the non-straight cutting path caused by vibration during the cutting process of the multi-blade saw body 1. In addition, since there is not only an axial gap between each blade unit 11, but also a radial drop in the radial direction due to the different diameters of each blade unit 11, the gap between two blade units 11 with different diameters is increased, improving heat dissipation efficiency.

[0040] The blade unit 11 includes a central blade 12 and side blades 13. The central blade 12 is located in the middle area, while the side blades 13 are located on both sides of the central blade 12. The diameter of the side blades 13 decreases sequentially in the direction that the central blade 12 extends to both sides, so that the structural shape of the multi-blade body adapts to the outer contour shape of the saw body 2. After cutting the saw body 2 in the radial direction, the side blades 13 cut the thinner areas on both sides of the saw body 2, while the central blade 12 cuts the thicker area in the middle of the saw body 2. This increases the connection ratio between the blade unit 11 and the saw body 2 in different areas, thereby ensuring the stability of the blade unit 11 during the cutting process and reducing vibration. At the same time, since the central blade 12 first contacts the thicker area in the middle of the saw body 2 during the radial movement, and only after cutting a certain distance will the larger diameter blade units 11 on both sides cut. At this time, the central blade 12 has already moved a longer distance and has a larger connection area with the saw body 2, ensuring the relative stability between the two.

[0041] The center blade 12 is provided with left and right oblique teeth, which are staggered. During the cutting process, the saw body 2 is clamped and squeezed to ensure the stability of the placement. Therefore, the blade 11 will be subjected to the squeezing force of the saw body 2 during the cutting process. Since the center blade 12 is located in the middle position, the left and right clamping forces on the center blade 12 can be balanced. The staggered arrangement of the left and right oblique teeth can ensure the flatness of the cut. Since the pressure on the left and right is the same, the flatness of the cut surfaces on the left and right sides of the center blade 12 is the same and the flatness is high.

[0042] The blade unit 11 includes a left blade 131 and a right blade 132. During the cutting process, the saw body 2 is clamped and squeezed to ensure placement stability. Therefore, the blade unit 11 will be subjected to the squeezing force of the saw body 2 during the cutting process. Since the left blade 131 and the right blade 132 are respectively located on the left and right sides of the saw body 2, the squeezing force is unbalanced. The left side of the left blade 131 will be subjected to greater squeezing force, and the right side of the right blade 132 will also be subjected to greater squeezing force. Therefore, the left blade 131 is set with a right-handed helical tooth, and the right blade 132 is set with a left-handed helical tooth. This can avoid the squeezing force from causing more damage to the blade unit 11. At the same time, the right-handed helical tooth setting of the left blade 131 will ensure the cutting flatness on the right side, while the left-handed helical tooth setting of the right blade 132 will ensure the cutting flatness on the left side. Although the cutting surface flatness on the other side is poor, it will reduce the damage to the blade unit 11 on that side and protect the structural life.

[0043] A heat dissipation groove 111 is provided on the blade unit 11, wherein the heat dissipation groove 111 extends to the edge of the blade unit 11 and a circular hole 112 is provided at the end, thereby ensuring heat dissipation and noise reduction effect, while improving structural strength.

[0044] Example 2:

[0045] like Figure 6 , 7 As shown in Figure 8, unlike Embodiment 1, in this embodiment, the multi-blade saw body 1 is connected to an intermediate rotating shaft 3. The intermediate rotating shaft 3 includes a different diameter mounting surface 31 corresponding to the edge contour of the saw body 2. The intermediate rotating shaft 3 is detachably connected to several different diameter mounting blocks 32, which are respectively connected to corresponding blade units 11. The edges of each different diameter mounting block are connected to form the different diameter mounting surface 31. The intermediate rotating shaft 3 includes an intermediate fixing block 33 and screws 34 disposed on both sides of the intermediate fixing block 33. The screws 34 are threadedly connected to the different diameter mounting blocks 32. Both the screws 34 and the different diameter mounting blocks 32 are provided with limiting grooves 35. When the screws 34 and the different diameter mounting blocks 32 are connected in place, the limiting grooves 35 are aligned, and limiting pins 36 are engaged within the limiting grooves 35.

[0046] The multi-blade saw body 1 connects each individual blade 11 via a central pivot 3. Generally, the central pivot 3 is a conventional pivot with the same diameter at all points. However, since the diameters of the individual blades 11 are different, the distance between the edge of each blade 11 and the connection point of the central pivot 3 is reduced. Because the sawed body 2 has a near-circular shape, a significant portion of the blades 11 on both sides remains unconnected to the log. Therefore, this application proposes a solution where the central pivot 3 is fitted with a variable-diameter mounting surface 31. The diameter of the variable-diameter mounting surface 31 varies at different points. In areas where the log is thicker and the blade 11 diameter is larger, a smaller diameter is used to allow sufficient space. Conversely, in areas where the log is thinner and the blade 11 diameter is smaller, a larger diameter is used to compress the installation space. This maximizes the proportion of the connection area between the blade 11 and the sawed body 2 to the total cutting surface of the blade 11, thereby ensuring the cutting stability of the blade 11, reducing vibration, and ensuring a straight cutting path.

[0047] The intermediate shaft 3 is detachably connected to the reducing mounting block 32. The detachable connection includes, but is not limited to, threaded connection, sliding connection, and snap-fit. After connection, pressure blocks can be set at both ends of the intermediate shaft 3 to ensure the connection stability of the reducing mounting block 32. The area where the blade unit 11 is connected to the reducing mounting block 32 is the fixed area, which has good stability. At the same time, due to the fixing effect of the reducing mounting block 32, the blade unit 11 has good stability at this point, and the vibration impact is small. The area not connected to the reducing mounting block 32 is the non-fixed area, which is the cutting area of ​​the blade unit 11. Therefore, due to the presence of the reducing mounting block 32, the cutting area can completely cut the saw body 2 while minimizing the vibrating area of ​​the blade unit 11, reducing vibration during operation. At the same time, since the structure of the saw body 2 is generally circular, the farther the blade units 11 on both sides are from the middle area, the more unbalanced the force becomes. This increases the fixing area of ​​the reducing mounting block 32 on the blade unit 11, thereby ensuring stability at this point.

[0048] The intermediate rotating shaft 3 includes an intermediate fixing block 33, which is fixed in the middle area. The intermediate fixing block 33 has screws 34 on both sides, which connect different reducing mounting blocks 32. The reducing mounting blocks 32 can be configured to engage with the blade unit 11, or the blade unit 11 can be placed between two reducing mounting blocks 32. The clamping effect of the reducing mounting blocks 32 ensures the stability of the blade unit 11.

[0049] Limiting grooves 35 are provided on the screw 34 and the reducing mounting block 32, with a set pitch, to ensure that after the reducing mounting block 32 is connected in place, the limiting grooves 35 on each reducing mounting block are aligned with the limiting grooves 35 on the screw 34, and can be connected to the limiting pins 36. This prevents the multi-blade saw body 1 from rotating relative to the central rotating shaft due to centrifugal force and resistance during the cutting process driven by the intermediate rotating shaft 3, which could lead to loosening or jamming, and facilitates subsequent replacement.

[0050] In addition to the above-described structure, this embodiment also uses the following structure: a multi-blade saw body 1, which includes blade units 11 with progressively varying diameters. On the radial cross-section of the multi-blade saw body 1, the contour formed by the connecting edges of each blade unit 11 corresponds to the contour of the edge of the workpiece 2 being sawed. Each blade unit 11 includes a central blade 12 located in the middle of the multi-blade saw body 1, and side blades 13 located on both sides of the central blade 12. The diameter of the side blades 13 decreases progressively along the side extension direction from the central blade 12. Each blade unit 11 includes the central blade 12, which has staggered left and right oblique teeth. Each blade unit 11 also includes a left blade 131 and a right blade 132, with a right oblique tooth on the left blade 131 and a left oblique tooth on the right blade 132. The blade unit 11 is provided with a heat dissipation groove 111, which extends to the edge of the blade unit 11. A circular hole 112 is provided at the end of the heat dissipation groove 111 away from the edge of the blade unit 11.

[0051] Example 3:

[0052] This application also discloses a cutting method, which includes the following steps:

[0053] S1. Select the corresponding blade unit 11 according to the edge contour of the saw body 2 to be cut;

[0054] S2. Connect the blade unit 11 to the intermediate rotating shaft 3 to assemble a multi-blade saw body 1, with the edge contour of the multi-blade saw body 1 corresponding to the edge contour of the saw body 2.

[0055] S3. Cut along the radial direction of the saw body 2 until all blade units 11 penetrate the saw body 2, then stop the radial movement and perform axial movement cutting.

[0056] This application also discloses a cutting method. Specifically, firstly, an appropriate number of blade units 11 are selected according to the size of the log, and the blade units 11 of appropriate size are selected according to their positions on different logs. The blade units 11 are designed to extend slightly beyond the edge of the log after radial cutting, ensuring that the extended dimensions of each blade unit 11 are as similar as possible. Then, the multi-blade body cuts along the radial direction of the log until all blade units 11 radially penetrate the log and extend outwards. Then, the radial movement is stopped, and axial cutting is performed along the axis of the log. During the cutting process, since the contact area between each blade unit 11 and the log remains stable, and the distance between the blade units 11 on both sides and the central axis changes adaptively, the distance is reduced significantly compared to the prior art, thus reducing vibration.

[0057] This embodiment uses the following structure: a multi-blade saw body 1, which includes blade units 11 with successively varying diameters. On the radial cross-section of the multi-blade saw body 1, the contour formed by the connecting edges of each blade unit 11 corresponds to the contour of the saw body 2. Each blade unit 11 is connected to a central rotating shaft 3, forming the multi-blade saw body 1. Each blade unit 11 includes a central blade 12 located in the middle of the multi-blade saw body 1, and side blades 13 located on both sides of the central blade 12. The diameter of the side blades 13 decreases successively along the side extension direction from the central blade 12. Each blade unit 11 includes the central blade 12, which has staggered left and right oblique teeth. Each blade unit 11 also includes a left blade 131 and a right blade 132, with a right oblique tooth on the left blade 131 and a left oblique tooth on the right blade 132. The blade unit 11 is provided with a heat dissipation groove 111, which extends to the edge of the blade unit 11. A circular hole 112 is provided at the end of the heat dissipation groove 111 away from the edge of the blade unit 11.

[0058] Example 4:

[0059] This application also discloses a cutting method, which includes the following steps:

[0060] S1. Select the corresponding blade unit 11 according to the edge contour of the saw body 2 to be cut;

[0061] S2. Connect the blade unit 11 to the intermediate rotating shaft 3 to assemble a multi-blade saw body 1, with the edge contour of the multi-blade saw body 1 corresponding to the edge contour of the saw body 2.

[0062] S3. Cut along the radial direction of the saw body 2 until all blade units 11 penetrate the saw body 2, then stop the radial movement and perform axial movement cutting.

[0063] This application also discloses a cutting method. Specifically, firstly, an appropriate number of blade units 11 are selected according to the size of the log, and the blade units 11 of appropriate size are selected according to their positions on different logs. The blade units 11 are designed to extend slightly beyond the edge of the log after radial cutting, ensuring that the extended dimensions of each blade unit 11 are as similar as possible. Then, the multi-blade body cuts along the radial direction of the log until all blade units 11 radially penetrate the log and extend outwards. Then, the radial movement is stopped, and axial cutting is performed along the axis of the log. During the cutting process, since the contact area between each blade unit 11 and the log remains stable, and the distance between the blade units 11 on both sides and the central axis changes adaptively, the distance is reduced significantly compared to the prior art, thus reducing vibration.

[0064] This embodiment uses the following structure: a multi-blade saw body 1, which includes blade units 11 with successively varying diameters. On the radial cross-section of the multi-blade saw body 1, the contour formed by the connecting edges of each blade unit 11 corresponds to the contour of the saw body 2. Each blade unit 11 includes a central blade 12 located in the middle of the multi-blade saw body 1, and side blades 13 located on both sides of the central blade 12. The diameter of the side blades 13 decreases successively along the side extension direction from the central blade 12. Each blade unit 11 includes the central blade 12, which has staggered left and right oblique teeth. Each blade unit 11 also includes a left blade 131 and a right blade 132, with a right oblique tooth on the left blade 131 and a left oblique tooth on the right blade 132. The blade unit 11 is provided with a heat dissipation groove 111, which extends to the edge of the blade unit 11. A circular hole 112 is provided at the end of the heat dissipation groove 111 away from the edge of the blade unit 11. The multi-blade saw body 1 is connected to an intermediate rotating shaft 3, which includes a different diameter mounting surface 31 corresponding to the contour of the edge of the saw body 2. The intermediate rotating shaft 3 is detachably connected to several different diameter mounting blocks 32, which are respectively connected to the corresponding blade units 11. The edges of each different diameter mounting block are connected to form the different diameter mounting surface 31. The intermediate rotating shaft 3 includes an intermediate fixing block 33 and screws 34 provided on both sides of the intermediate fixing block 33. The screws 34 are threaded to the different diameter mounting blocks 32. Both the screws 34 and the different diameter mounting blocks 32 are provided with limit grooves 35. When the screws 34 and the different diameter mounting blocks 32 are connected in place, the limit grooves 35 are aligned, and limit pins 36 are engaged in the limit grooves 35.

Claims

1. A vibration-damping combined multi-blade saw, comprising a multi-blade saw body, characterized in that, The multi-blade saw body includes individual blades with progressively varying diameters. On the radial cross-section of the multi-blade saw body, the contour formed by the connecting edges of each individual blade corresponds to the contour of the saw body's edge. Each individual blade includes a central blade located in the middle of the multi-blade saw body, and side blades located on either side of the central blade. The diameter of the side blades decreases progressively along the side extension direction from the central blade. The multi-blade saw body is connected to a central pivot, which includes a variable-diameter mounting surface corresponding to the contour of the saw body's edge. The central pivot is detachably connected to several variable-diameter mounting blocks, each connected to a corresponding individual blade. The connecting edges of each variable-diameter mounting block form a variable-diameter mounting surface. The diameter of the variable-diameter mounting surface varies at different locations. In areas where the saw body is thicker and the individual blade diameter is larger, the diameter of the variable-diameter mounting surface is smaller. In areas where the saw body is thinner and the individual blade diameter is smaller, the diameter of the variable-diameter mounting surface is larger.

2. A vibration-damping combined multi-blade saw according to claim 1, characterized in that, The central blade has staggered left and right helical teeth.

3. A vibration-damping combined multi-blade saw according to claim 1, characterized in that, The blade unit includes a left blade and a right blade. The left blade is provided with a right helical tooth, and the right blade is provided with a left helical tooth.

4. A vibration-damping combined multi-blade saw according to claim 1, characterized in that, The intermediate shaft includes an intermediate fixing block, and the intermediate shaft includes screws disposed on both sides of the intermediate fixing block, with the screws threadedly connected to the differential mounting blocks.

5. A vibration-damping combined multi-blade saw according to claim 4, characterized in that, Both the screw and the reducing mounting block are provided with limiting grooves. When the screw and the reducing mounting block are connected in place, the limiting grooves are aligned, and the limiting pins are engaged in the limiting grooves.

6. A vibration-damping combined multi-blade saw according to any one of claims 1-5, characterized in that, The blade unit is provided with a heat dissipation groove that extends to the edge of the blade unit. A circular hole is provided at the end of the heat dissipation groove away from the edge of the blade unit.

7. A cutting method using a vibration-damping combined multi-blade saw according to any one of claims 1-6, characterized in that, It includes the following steps: S1. Select the corresponding blade unit according to the required cutting edge contour; S2. Connect the individual blades to the central rotating shaft to assemble a multi-blade saw body, with the edge contour of the multi-blade saw body corresponding to the edge contour of the body being sawed. S3. Cut along the radial direction of the saw body until all individual blades penetrate the saw body, then stop radial movement and proceed with axial movement cutting.

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