Combined saw blade for grooving

Abstract

The invention discloses a combined saw blade for grooving, and aims to overcome the defect that a plurality of saw blades with different tool bit widths are required to be prepared for grooving machining of grooves with different widths, so that the operation is very inconvenient. The saw blade comprises a plurality of saw blade base bodies which are fixedly connected together, a plurality of saw teeth are evenly distributed on the edges of the saw blade base bodies, a chip guiding groove is formed by a groove between every two adjacent saw teeth, and tool bits are arranged on the sides, facing the cutting direction, of the saw teeth. The tool bits on every two adjacent saw blade base bodies are arranged in a staggered mode, so that the tool bits on one saw blade base body correspond to the chip guiding grooves in the other saw blade base body. According to the combined saw blade for grooving, grooving operation of different groove widths can be achieved, flexibility and convenience are achieved, and reduction of the input cost of the saw blade is facilitated.

Description

Technical Field

[0001] The present invention relates to a saw blade, and more particularly to a combined saw blade for grooving. Background Art

[0002] At present, slotting is a common processing step in actual production. During slotting, a saw blade is used to cut the surface of the workpiece to complete the slotting action. However, the width of the slots varies, some are wide and some are narrow. In order to realize the slotting of slots of different widths, it is often necessary to prepare multiple saw blades with different head widths, which is very inconvenient and increases the investment cost of the saw blades. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention provides a combined saw blade for grooving, which can realize grooving operations for different groove widths, is flexible and convenient, and is conducive to reducing the investment cost of the saw blade.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a combined saw blade for grooving, comprising a plurality of saw blade bases fastened together, a plurality of saw teeth evenly distributed on the edge of the saw blade base, the grooves between adjacent saw teeth form a chip guide groove, and a cutter head is provided on the saw teeth facing the cutting direction; the cutter heads on two adjacent saw blade bases are staggered so that the cutter head on one saw blade base corresponds to the chip guide groove on the other saw blade base.

[0005] The combined saw blade is composed of several saw blade bases fastened together. According to the required slot width, the appropriate number of saw blade bases is selected for combination. During the slotting operation, the combined saw blade rotates, and the cutter head on the saw teeth cuts the surface of the workpiece, thereby processing a groove of appropriate width on the surface of the workpiece. During the slotting process, the chips are discharged outward through the chip guide groove. The width of the cutter head is greater than the thickness of the saw blade base, and the cutter heads on the adjacent saw blade bases are staggered to prevent the cutter head from interfering with the saw blade base. The outline of the cutter head is smaller than the outline of the chip guide groove to prevent the cutter head from interfering with the chip guide groove and affecting the discharge of chips.

[0006] The combined saw blade for grooving of the patent application can realize grooving operations for different groove widths, which is flexible and convenient and helps to reduce the investment cost of the saw blade.

[0007] Preferably, a tooth seat is provided on the saw teeth, and the cutter head is welded on the tooth seat.

[0008] The tooth seat on the saw teeth is used to install the cutter head, which ensures the reliability of the cutter head installation.

[0009] Preferably, the cutter head is tilted radially outward toward the cutting direction, with an inclination angle of 5-10 degrees.

[0010] The cutter head with this structure is conducive to the rapid discharge of chips, reduces the resistance to the cutter head, avoids chip blockage causing overheating of the cutter head, and thus accelerates the wear of the cutter head.

[0011] Preferably, a plurality of narrow heat dissipation grooves are evenly distributed on the edge of the saw blade base, the narrow heat dissipation grooves are in the shape of silk threads, and the inner ends of the narrow heat dissipation grooves are in a "G"-shaped structure.

[0012] The provision of the heat dissipation narrow groove is beneficial to improving the heat dissipation effect of the saw blade base and extending the service life of the cutter head.

[0013] Preferably, a plurality of fastening holes are arranged at the edge of the saw blade base, and rivet columns are connected between the saw blade bases, and the rivet columns are riveted between the fastening holes.

[0014] The saw blade bases are fixed by riveting columns to prevent axial separation between the edges of adjacent saw blade bases during use of the combined saw blade, thereby ensuring the reliability of the connection between different saw blade bases, especially the reliability of the connection at the edges of the saw blade bases.

[0015] Preferably, a concave auxiliary guide groove is provided on the side of the saw tooth facing away from the cutter head, and the auxiliary guide groove extends outward to the outer end of the saw tooth.

[0016] Since the cutter head on one saw blade base is arranged correspondingly to the chip guide groove on the other saw blade base, the chips cut by the cutter head on one saw blade base can be discharged outward through the auxiliary guide groove. The setting of the auxiliary guide groove is conducive to improving the chip discharge speed and discharge effect.

[0017] Preferably, a gasket is installed between two adjacent saw blade bases.

[0018] The shim is installed between two adjacent saw blade bases to adjust the width of the entire combined saw blade. Shims of different widths are selected to achieve different slotting widths. Assuming the slotting width is H, the width of a single blade is T, and the thickness of the saw blade base is B, then T+B≤H≤T+T, and the slotting operation can be achieved within this range.

[0019] Preferably, a plurality of indentations are arranged on the surface of the saw blade base, and convex ribs are arranged on the surface of the gasket corresponding to the indentations, and the convex ribs fit closely with the indentations.

[0020] The gasket is installed between the saw blade base, and the convex ribs and the concave grooves are fitted together to achieve circumferential locking to prevent the gasket and the saw blade base from rotating relative to each other.

[0021] Preferably, the chip guide grooves on the edge of the gasket and the saw blade bases on both sides are correspondingly provided with chip removal grooves.

[0022] A chip removal groove is arranged on the edge of the gasket to avoid the chip guide grooves on the base bodies of two adjacent saw blades, thereby preventing the gasket edge from blocking the chip guide grooves, which is conducive to the rapid discharge of chips.

[0023] Preferably, the saw blade base has an HRC hardness of 42-46 after heat treatment.

[0024] The saw blade base is heat treated to ensure a certain hardness and extend its service life.

[0025] Compared with the prior art, the beneficial effects of the present invention are: (1) The combined saw blade for grooving of the present patent application can realize the grooving operation of different groove widths, which is flexible and convenient, and is conducive to reducing the investment cost of the saw blade; (2) The chip discharge speed of the combined saw blade is fast and the discharge effect is good during the grooving process, which is conducive to extending the service life of the cutter head; (3) After the saw blade base is connected, circumferential and axial locking can be achieved, and the connection is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of embodiment 1 of the present invention.

[0027] Figure 2 It is a schematic structural diagram of the saw blade base of Example 1 of the present invention.

[0028] Figure 3 It is a schematic diagram of the partial structure of Example 1 of the present invention.

[0029] Figure 4 It is a schematic structural diagram of embodiment 2 of the present invention.

[0030] Figure 5 It is a schematic diagram of the gasket structure of Example 3 of the present invention.

[0031] Figure 6 It is a schematic diagram of the gasket structure of Example 4 of the present invention.

[0032] Figure 7 It is a schematic structural diagram of embodiment 5 of the present invention.

[0033] Figure 8 It is a schematic diagram of the partial structure of Example 5 of the present invention.

[0034] In the figure: 1. saw blade base, 2. saw teeth, 3. chip guide groove, 4. cutter head, 5. tooth seat, 6. heat dissipation narrow groove, 7. mounting hole, 8. connecting hole, 9. fastening hole, 10. auxiliary guide groove, 11. chip holding part, 12. chip guide part, 13. gasket, 14. convex rib, 15. chip removal groove, 16. riveting hole. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Embodiment 1: A combined saw blade for slotting (see attached Figure 1 , Attachment Figure 2 , Attachment Figure 3), including a plurality of saw blade bases 1 fastened together, the saw blade base 1 having an HRC hardness of 42-46 after heat treatment, and the saw blade base 1 having a disc-shaped structure. A plurality of saw teeth 2 are evenly distributed on the edge of the saw blade base 1, and the grooves between adjacent saw teeth 2 form a chip guide groove 3, and a cutter head 4 is provided on the side of the saw tooth 2 facing the cutting direction; the cutter head 4 is made of alloy material, has high hardness, good wear resistance and long service life. The chip guide groove 3 is an inwardly concave arc structure, and the side of the saw tooth 2 facing away from the cutting direction is inclined away from the radial direction, thereby forming a chip guide slope. The width of the cutter head 4 is greater than the thickness of the saw blade base 1, and the lengths of the cutter head 4 extending from the surface of the saw blade base 1 on both sides in the width direction are consistent. The outer end of the cutter head 4 extends from the outer end of the saw tooth 2. The upper edge of the cutter head 4 facing the cutting direction is a blade, and the turning angle at the blade of the cutter head 4 is an acute angle.

[0036] The cutter heads 4 on two adjacent saw blade bases 1 are staggered so that the cutter head 4 on one saw blade base 1 corresponds to the chip guide groove 3 on the other saw blade base 1. Since the width of the cutter head 4 is greater than the thickness of the saw blade base 1, both sides of the cutter head 4 in the width direction extend out of the surface of the saw blade base 1. Therefore, the cutter heads 4 on two adjacent saw blade bases 1 are staggered to prevent the cutter head 4 on one saw blade base 1 from interfering with the other saw blade base 1.

[0037] A tooth seat 5 is arranged on the sawtooth 2, and a cutter head 4 is welded on the tooth seat 5. Mounting notches are arranged on the tooth seat 5 and in correspondence with the cutter head 4, and the lower part of the cutter head 4 is placed at the mounting notch, and the side of the cutter head 4 facing the chip direction is inclined away from the blade side toward the tooth seat 5. The lower edge of the side of the cutter head 4 facing the chip direction is flush with the side of the tooth seat 5 facing the chip direction. The outer end surface of the sawtooth 2 is inclined outwardly in the chip direction. The outer end surface of the cutter head 4 is inclined outwardly in the chip direction. The cutter head 4 is radially inclined outwardly in the cutting direction, and the inclination angle is 5-10 degrees. A plurality of heat dissipation narrow grooves 6 are evenly arranged on the edge of the saw blade base 1, and the heat dissipation narrow grooves 6 are in the shape of silk threads, and the inner ends of the heat dissipation narrow grooves 6 are in a "G"-shaped structure. The outer ends of the heat dissipation narrow grooves 6 are connected to the chip guide groove 3. In this embodiment, six heat dissipation narrow grooves 6 are evenly arranged circumferentially on each saw blade base 1. The middle of the saw blade base 1 is provided with a mounting hole 7, and a plurality of connecting holes 8 are evenly distributed around the mounting hole 7. The combined saw blade is mounted on the rotating shaft through the mounting hole 7 and the connecting hole 8, and the rotation of the rotating shaft drives the combined saw blade to rotate to realize the slotting operation.

[0038] The combined saw blade is composed of a plurality of saw blade bases 1 fastened together. According to the required slot width, the appropriate number of saw blade bases 1 is selected for combination. In this embodiment, two saw blade bases 1 are combined and connected together to form a combined saw blade. During the slotting operation, the combined saw blade rotates, and the cutter head 4 on the saw teeth 2 cuts the surface of the workpiece, thereby processing a groove of appropriate width on the surface of the workpiece. During the slotting process, the chips are discharged outward through the chip guide groove 3. The width of the cutter head 4 is greater than the thickness of the saw blade base 1, and the cutter heads 4 on the two adjacent saw blade bases 1 are staggered to prevent the cutter head 4 from interfering with the saw blade base 1. The outline of the cutter head 4 is smaller than the outline of the chip guide groove 3 to prevent the cutter head 4 from interfering with the chip guide groove 3 and affecting the discharge of chips.

[0039] Embodiment 2: A combined saw blade for slotting (see attached Figure 4 ), including a plurality of saw blade bases 1 fastened together, the saw blade base 1 having an HRC hardness of 42-46 after heat treatment, and the saw blade base 1 having a disc-shaped structure. A plurality of saw teeth 2 are evenly distributed on the edge of the saw blade base 1, and the grooves between adjacent saw teeth 2 form a chip guide groove 3, and a cutter head 4 is provided on the side of the saw tooth 2 facing the cutting direction; the cutter head 4 is made of alloy material, has high hardness, good wear resistance and long service life. The chip guide groove 3 is an inwardly concave arc structure, and the side of the saw tooth 2 facing away from the cutting direction is inclined away from the radial direction, thereby forming a chip guide slope. The width of the cutter head 4 is greater than the thickness of the saw blade base 1, and the lengths of the cutter head 4 extending from the surface of the saw blade base 1 on both sides in the width direction are consistent. The outer end of the cutter head 4 extends from the outer end of the saw tooth 2. The upper edge of the cutter head 4 facing the cutting direction is a blade, and the turning angle at the blade of the cutter head 4 is an acute angle.

[0040] The cutter heads 4 on two adjacent saw blade bases 1 are staggered so that the cutter head 4 on one saw blade base 1 corresponds to the chip guide groove 3 on the other saw blade base 1. Since the width of the cutter head 4 is greater than the thickness of the saw blade base 1, both sides of the cutter head 4 in the width direction extend out of the surface of the saw blade base 1. Therefore, the cutter heads 4 on two adjacent saw blade bases 1 are staggered to prevent the cutter head 4 on one saw blade base 1 from interfering with the other saw blade base 1.

[0041] A tooth seat 5 is arranged on the sawtooth 2, and a cutter head 4 is welded on the tooth seat 5. Mounting notches are arranged on the tooth seat 5 and in correspondence with the cutter head 4, and the lower part of the cutter head 4 is placed at the mounting notch, and the side of the cutter head 4 facing the chip direction is inclined away from the blade side toward the tooth seat 5. The lower edge of the side of the cutter head 4 facing the chip direction is flush with the side of the tooth seat 5 facing the chip direction. The outer end surface of the sawtooth 2 is inclined outwardly in the chip direction. The outer end surface of the cutter head 4 is inclined outwardly in the chip direction. The cutter head 4 is radially inclined outwardly in the cutting direction, and the inclination angle is 5-10 degrees. A plurality of heat dissipation narrow grooves 6 are evenly arranged on the edge of the saw blade base 1, and the heat dissipation narrow grooves 6 are in the shape of silk threads, and the inner ends of the heat dissipation narrow grooves 6 are in a "G"-shaped structure. The outer ends of the heat dissipation narrow grooves 6 are connected to the chip guide groove 3. In this embodiment, six heat dissipation narrow grooves 6 are evenly arranged circumferentially on each saw blade base 1. The middle of the saw blade base 1 is provided with a mounting hole 7, and a plurality of connecting holes 8 are evenly distributed around the mounting hole 7. The combined saw blade is mounted on the rotating shaft through the mounting hole 7 and the connecting hole 8, and the rotation of the rotating shaft drives the combined saw blade to rotate to realize the slotting operation.

[0042] A plurality of fastening holes 9 are arranged at the edge of the saw blade base 1, and the saw blade bases 1 are connected with rivet columns, which are riveted between the fastening holes 9. The saw blade bases 1 are fixed by rivet columns, which prevents the axial separation between the edges of adjacent saw blade bases 1 during the use of the combined saw blade, and ensures the reliability of the connection between different saw blade bases 1, especially the reliability of the connection at the edge of the saw blade base 1. After riveting, the distance between the two ends of the rivet column above the surface of the saw blade base 1 is less than the distance between the two sides of the cutter head 4 above the surface of the saw blade base 1.

[0043] The combined saw blade is composed of a plurality of saw blade bases 1 fastened together. According to the required slot width, the appropriate number of saw blade bases 1 is selected for combination. In this embodiment, two saw blade bases 1 are combined and connected together to form a combined saw blade. During the slotting operation, the combined saw blade rotates, and the cutter head 4 on the saw teeth 2 cuts the surface of the workpiece, thereby processing a groove of appropriate width on the surface of the workpiece. During the slotting process, the chips are discharged outward through the chip guide groove 3. The width of the cutter head 4 is greater than the thickness of the saw blade base 1, and the cutter heads 4 on the two adjacent saw blade bases 1 are staggered to prevent the cutter head 4 from interfering with the saw blade base 1. The outline of the cutter head 4 is smaller than the outline of the chip guide groove 3 to prevent the cutter head 4 from interfering with the chip guide groove 3 and affecting the discharge of chips.

[0044] Embodiment 3: A combined saw blade for slotting (see attached Figure 5), including a plurality of saw blade bases 1 fastened together, the saw blade base 1 having an HRC hardness of 42-46 after heat treatment, and the saw blade base 1 having a disc-shaped structure. A plurality of saw teeth 2 are evenly distributed on the edge of the saw blade base 1, and the grooves between adjacent saw teeth 2 form a chip guide groove 3, and a cutter head 4 is provided on the side of the saw tooth 2 facing the cutting direction; the cutter head 4 is made of alloy material, has high hardness, good wear resistance and long service life. The chip guide groove 3 is an inwardly concave arc structure, and the side of the saw tooth 2 facing away from the cutting direction is inclined away from the radial direction, thereby forming a chip guide slope. The width of the cutter head 4 is greater than the thickness of the saw blade base 1, and the lengths of the cutter head 4 extending from the surface of the saw blade base 1 on both sides in the width direction are consistent. The outer end of the cutter head 4 extends from the outer end of the saw tooth 2. The upper edge of the cutter head 4 facing the cutting direction is a blade, and the turning angle at the blade of the cutter head 4 is an acute angle.

[0045] The cutter heads 4 on two adjacent saw blade bases 1 are staggered so that the cutter head 4 on one saw blade base 1 corresponds to the chip guide groove 3 on the other saw blade base 1. Since the width of the cutter head 4 is greater than the thickness of the saw blade base 1, both sides of the cutter head 4 in the width direction extend out of the surface of the saw blade base 1. Therefore, the cutter heads 4 on two adjacent saw blade bases 1 are staggered to prevent the cutter head 4 on one saw blade base 1 from interfering with the other saw blade base 1.

[0046] A tooth seat 5 is arranged on the sawtooth 2, and a cutter head 4 is welded on the tooth seat 5. Mounting notches are arranged on the tooth seat 5 and in correspondence with the cutter head 4, and the lower part of the cutter head 4 is placed at the mounting notch, and the side of the cutter head 4 facing the chip direction is inclined away from the blade side toward the tooth seat 5. The lower edge of the side of the cutter head 4 facing the chip direction is flush with the side of the tooth seat 5 facing the chip direction. The outer end surface of the sawtooth 2 is inclined outwardly in the chip direction. The outer end surface of the cutter head 4 is inclined outwardly in the chip direction. The cutter head 4 is radially inclined outwardly in the cutting direction, and the inclination angle is 5-10 degrees. A plurality of heat dissipation narrow grooves 6 are evenly arranged on the edge of the saw blade base 1, and the heat dissipation narrow grooves 6 are in the shape of silk threads, and the inner ends of the heat dissipation narrow grooves 6 are in a "G"-shaped structure. The outer ends of the heat dissipation narrow grooves 6 are connected to the chip guide groove 3. In this embodiment, six heat dissipation narrow grooves 6 are evenly arranged circumferentially on each saw blade base 1. The middle of the saw blade base 1 is provided with a mounting hole 7, and a plurality of connecting holes 8 are evenly distributed around the mounting hole 7. The combined saw blade is mounted on the rotating shaft through the mounting hole 7 and the connecting hole 8, and the rotation of the rotating shaft drives the combined saw blade to rotate to realize the slotting operation.

[0047] A plurality of fastening holes 9 are arranged at the edge of the saw blade base 1, and the saw blade bases 1 are connected with rivet columns, which are riveted between the fastening holes 9. The saw blade bases 1 are fixed by rivet columns, which prevents the axial separation between the edges of adjacent saw blade bases 1 during the use of the combined saw blade, and ensures the reliability of the connection between different saw blade bases 1, especially the reliability of the connection at the edge of the saw blade base 1. After riveting, the distance between the two ends of the rivet column above the surface of the saw blade base 1 is less than the distance between the two sides of the cutter head 4 above the surface of the saw blade base 1.

[0048] A gasket 13 is installed between two adjacent saw blade bases 1. A rivet hole 16 is provided on the gasket 13 corresponding to the rivet column, and the rivet column passes through the rivet hole 16. A plurality of circumferentially evenly distributed indentations are provided on the surface of the saw blade base 1. The indentations are radially arranged. A convex rib 14 is provided on the surface of the gasket 13 corresponding to the indentations. The convex rib 14 fits in with the indentations. The gasket 13 is installed between two adjacent saw blade bases 1, and the width of the entire combined saw blade can be adjusted. Gaskets 13 of different widths are selected to achieve different slotting widths. Assuming that the slotting width is H, the width of a single cutter head 4 is T, and the thickness of the saw blade base 1 is B, then T+B≤H≤T+T, and the slotting width can achieve slotting operation within this range. The gasket 13 is installed between the saw blade bases 1, and the convex rib 14 fits in with the indentations to achieve circumferential locking, preventing the gasket 13 and the saw blade base 1 from rotating relative to each other.

[0049] The combined saw blade is composed of a plurality of saw blade bases 1 fastened together. According to the required slot width, the appropriate number of saw blade bases 1 is selected for combination. In this embodiment, two saw blade bases 1 are combined and connected together to form a combined saw blade. During the slotting operation, the combined saw blade rotates, and the cutter head 4 on the saw teeth 2 cuts the surface of the workpiece, thereby processing a groove of appropriate width on the surface of the workpiece. During the slotting process, the chips are discharged outward through the chip guide groove 3. The width of the cutter head 4 is greater than the thickness of the saw blade base 1, and the cutter heads 4 on the two adjacent saw blade bases 1 are staggered to prevent the cutter head 4 from interfering with the saw blade base 1. The outline of the cutter head 4 is smaller than the outline of the chip guide groove 3 to prevent the cutter head 4 from interfering with the chip guide groove 3 and affecting the discharge of chips.

[0050] Embodiment 4: A combined saw blade for slotting (see attached Figure 6 ), including a plurality of saw blade bases 1 fastened together, the saw blade base 1 having an HRC hardness of 42-46 after heat treatment, and the saw blade base 1 having a disc-shaped structure. A plurality of saw teeth 2 are evenly distributed on the edge of the saw blade base 1, and the grooves between adjacent saw teeth 2 form a chip guide groove 3, and a cutter head 4 is provided on the side of the saw tooth 2 facing the cutting direction; the cutter head 4 is made of alloy material, has high hardness, good wear resistance and long service life. The chip guide groove 3 is an inwardly concave arc structure, and the side of the saw tooth 2 facing away from the cutting direction is inclined away from the radial direction, thereby forming a chip guide slope. The width of the cutter head 4 is greater than the thickness of the saw blade base 1, and the lengths of the cutter head 4 extending from the surface of the saw blade base 1 on both sides in the width direction are consistent. The outer end of the cutter head 4 extends from the outer end of the saw tooth 2. The upper edge of the cutter head 4 facing the cutting direction is a blade, and the turning angle at the blade of the cutter head 4 is an acute angle.

[0051] The cutter heads 4 on two adjacent saw blade bases 1 are staggered so that the cutter head 4 on one saw blade base 1 corresponds to the chip guide groove 3 on the other saw blade base 1. Since the width of the cutter head 4 is greater than the thickness of the saw blade base 1, both sides of the cutter head 4 in the width direction extend out of the surface of the saw blade base 1. Therefore, the cutter heads 4 on two adjacent saw blade bases 1 are staggered to prevent the cutter head 4 on one saw blade base 1 from interfering with the other saw blade base 1.

[0052] A tooth seat 5 is arranged on the sawtooth 2, and a cutter head 4 is welded on the tooth seat 5. Mounting notches are arranged on the tooth seat 5 and in correspondence with the cutter head 4, and the lower part of the cutter head 4 is placed at the mounting notch, and the side of the cutter head 4 facing the chip direction is inclined away from the blade side toward the tooth seat 5. The lower edge of the side of the cutter head 4 facing the chip direction is flush with the side of the tooth seat 5 facing the chip direction. The outer end surface of the sawtooth 2 is inclined outwardly in the chip direction. The outer end surface of the cutter head 4 is inclined outwardly in the chip direction. The cutter head 4 is radially inclined outwardly in the cutting direction, and the inclination angle is 5-10 degrees. A plurality of heat dissipation narrow grooves 6 are evenly arranged on the edge of the saw blade base 1, and the heat dissipation narrow grooves 6 are in the shape of silk threads, and the inner ends of the heat dissipation narrow grooves 6 are in a "G"-shaped structure. The outer ends of the heat dissipation narrow grooves 6 are connected to the chip guide groove 3. In this embodiment, six heat dissipation narrow grooves 6 are evenly arranged circumferentially on each saw blade base 1. The middle of the saw blade base 1 is provided with a mounting hole 7, and a plurality of connecting holes 8 are evenly distributed around the mounting hole 7. The combined saw blade is mounted on the rotating shaft through the mounting hole 7 and the connecting hole 8, and the rotation of the rotating shaft drives the combined saw blade to rotate to realize the slotting operation.

[0053] A plurality of fastening holes 9 are arranged at the edge of the saw blade base 1, and the saw blade bases 1 are connected with rivet columns, which are riveted between the fastening holes 9. The saw blade bases 1 are fixed by rivet columns, which prevents the axial separation between the edges of adjacent saw blade bases 1 during the use of the combined saw blade, and ensures the reliability of the connection between different saw blade bases 1, especially the reliability of the connection at the edge of the saw blade base 1. After riveting, the distance between the two ends of the rivet column above the surface of the saw blade base 1 is less than the distance between the two sides of the cutter head 4 above the surface of the saw blade base 1.

[0054] A gasket 13 is installed between two adjacent saw blade bases 1. A rivet hole 16 is provided on the gasket 13 corresponding to the rivet column, and the rivet column passes through the rivet hole 16. A plurality of circumferentially evenly distributed indentations are provided on the surface of the saw blade base 1. The indentations are radially arranged. A convex rib 14 is provided on the surface of the gasket 13 corresponding to the indentations. The convex rib 14 fits in with the indentations. The gasket 13 is installed between two adjacent saw blade bases 1, and the width of the entire combined saw blade can be adjusted. Gaskets 13 of different widths are selected to achieve different slotting widths. Assuming that the slotting width is H, the width of a single cutter head 4 is T, and the thickness of the saw blade base 1 is B, then T+B≤H≤T+T, and the slotting width can achieve slotting operation within this range. The gasket 13 is installed between the saw blade bases 1, and the convex rib 14 fits in with the indentations to achieve circumferential locking, preventing the gasket 13 and the saw blade base 1 from rotating relative to each other.

[0055] The edge of the gasket 13 and the chip guide grooves 3 on the saw blade bases 1 on both sides are correspondingly provided with chip removal grooves 15. The chip removal grooves 15 are provided on the edge of the gasket 13 to avoid the chip guide grooves 3 on the adjacent saw blade bases 1, to prevent the edge of the gasket 13 from blocking the chip guide grooves 3, and to facilitate the rapid discharge of chips.

[0056] The combined saw blade is composed of a plurality of saw blade bases 1 fastened together. According to the required slot width, the appropriate number of saw blade bases 1 is selected for combination. In this embodiment, two saw blade bases 1 are combined and connected together to form a combined saw blade. During the slotting operation, the combined saw blade rotates, and the cutter head 4 on the saw teeth 2 cuts the surface of the workpiece, thereby processing a groove of appropriate width on the surface of the workpiece. During the slotting process, the chips are discharged outward through the chip guide groove 3. The width of the cutter head 4 is greater than the thickness of the saw blade base 1, and the cutter heads 4 on the two adjacent saw blade bases 1 are staggered to prevent the cutter head 4 from interfering with the saw blade base 1. The outline of the cutter head 4 is smaller than the outline of the chip guide groove 3 to prevent the cutter head 4 from interfering with the chip guide groove 3 and affecting the discharge of chips.

[0057] Embodiment 5: A combined saw blade for slotting (see attached Figure 7 , Attachment Figure 8 ), including a plurality of saw blade bases 1 fastened together, the saw blade base 1 having an HRC hardness of 42-46 after heat treatment, and the saw blade base 1 having a disc-shaped structure. A plurality of saw teeth 2 are evenly distributed on the edge of the saw blade base 1, and the grooves between adjacent saw teeth 2 form a chip guide groove 3, and a cutter head 4 is provided on the side of the saw tooth 2 facing the cutting direction; the cutter head 4 is made of alloy material, has high hardness, good wear resistance and long service life. The chip guide groove 3 is an inwardly concave arc structure, and the side of the saw tooth 2 facing away from the cutting direction is inclined away from the radial direction, thereby forming a chip guide slope. The width of the cutter head 4 is greater than the thickness of the saw blade base 1, and the lengths of the cutter head 4 extending from the surface of the saw blade base 1 on both sides in the width direction are consistent. The outer end of the cutter head 4 extends from the outer end of the saw tooth 2. The upper edge of the cutter head 4 facing the cutting direction is a blade, and the turning angle at the blade of the cutter head 4 is an acute angle.

[0058] The cutter heads 4 on two adjacent saw blade bases 1 are staggered so that the cutter head 4 on one saw blade base 1 corresponds to the chip guide groove 3 on the other saw blade base 1. Since the width of the cutter head 4 is greater than the thickness of the saw blade base 1, both sides of the cutter head 4 in the width direction extend out of the surface of the saw blade base 1. Therefore, the cutter heads 4 on two adjacent saw blade bases 1 are staggered to prevent the cutter head 4 on one saw blade base 1 from interfering with the other saw blade base 1.

[0059] A tooth seat 5 is arranged on the sawtooth 2, and a cutter head 4 is welded on the tooth seat 5. Mounting notches are arranged on the tooth seat 5 and in correspondence with the cutter head 4, and the lower part of the cutter head 4 is placed at the mounting notch, and the side of the cutter head 4 facing the chip direction is inclined away from the blade side toward the tooth seat 5. The lower edge of the side of the cutter head 4 facing the chip direction is flush with the side of the tooth seat 5 facing the chip direction. The outer end surface of the sawtooth 2 is inclined outwardly in the chip direction. The outer end surface of the cutter head 4 is inclined outwardly in the chip direction. The cutter head 4 is radially inclined outwardly in the cutting direction, and the inclination angle is 5-10 degrees. A plurality of heat dissipation narrow grooves 6 are evenly arranged on the edge of the saw blade base 1, and the heat dissipation narrow grooves 6 are in the shape of silk threads, and the inner ends of the heat dissipation narrow grooves 6 are in a "G"-shaped structure. The outer ends of the heat dissipation narrow grooves 6 are connected to the chip guide groove 3. In this embodiment, six heat dissipation narrow grooves 6 are evenly arranged circumferentially on each saw blade base 1. The middle of the saw blade base 1 is provided with a mounting hole 7, and a plurality of connecting holes 8 are evenly distributed around the mounting hole 7. The combined saw blade is mounted on the rotating shaft through the mounting hole 7 and the connecting hole 8, and the rotation of the rotating shaft drives the combined saw blade to rotate to realize the slotting operation.

[0060] A plurality of fastening holes 9 are arranged at the edge of the saw blade base 1, and the saw blade bases 1 are connected with rivet columns, which are riveted between the fastening holes 9. The saw blade bases 1 are fixed by rivet columns, which prevents the axial separation between the edges of adjacent saw blade bases 1 during the use of the combined saw blade, and ensures the reliability of the connection between different saw blade bases 1, especially the reliability of the connection at the edge of the saw blade base 1. After riveting, the distance between the two ends of the rivet column above the surface of the saw blade base 1 is less than the distance between the two sides of the cutter head 4 above the surface of the saw blade base 1.

[0061] A concave auxiliary guide groove 10 is provided on the side of the saw tooth 2 away from the cutter head 4. The auxiliary guide groove 10 is provided on the chip guide slope and extends outward to the outer end of the saw tooth 2. The auxiliary guide groove 10 includes a concave chip receiving portion 11 and an inclined chip guide portion 12, and the chip guide portion 12 is inclined outward toward the cutting direction. Since the cutter head 4 on one saw blade base 1 is provided correspondingly to the chip guide groove 3 on another saw blade base 1, the chips cut by the cutter head 4 on one saw blade base 1 can be discharged outward through the auxiliary guide groove 10. The provision of the auxiliary guide groove 10 is conducive to improving the discharge speed and discharge effect of the chips.

[0062] A gasket 13 is installed between two adjacent saw blade bases 1. A rivet hole 16 is provided on the gasket 13 corresponding to the rivet column, and the rivet column passes through the rivet hole 16. A plurality of circumferentially evenly distributed indentations are provided on the surface of the saw blade base 1. The indentations are radially arranged. A convex rib 14 is provided on the surface of the gasket 13 corresponding to the indentations. The convex rib 14 fits in with the indentations. The gasket 13 is installed between two adjacent saw blade bases 1, and the width of the entire combined saw blade can be adjusted. Gaskets 13 of different widths are selected to achieve different slotting widths. Assuming that the slotting width is H, the width of a single cutter head 4 is T, and the thickness of the saw blade base 1 is B, then T+B≤H≤T+T, and the slotting width can achieve slotting operation within this range. The gasket 13 is installed between the saw blade bases 1, and the convex rib 14 fits in with the indentations to achieve circumferential locking, preventing the gasket 13 and the saw blade base 1 from rotating relative to each other.

[0063] The edge of the gasket 13 and the chip guide grooves 3 on the saw blade bases 1 on both sides are correspondingly provided with chip removal grooves 15. The chip removal grooves 15 are provided on the edge of the gasket 13 to avoid the chip guide grooves 3 on the adjacent saw blade bases 1, to prevent the edge of the gasket 13 from blocking the chip guide grooves 3, and to facilitate the rapid discharge of chips.

[0064] The combined saw blade is composed of a plurality of saw blade bases 1 fastened together. According to the required slot width, the appropriate number of saw blade bases 1 is selected for combination. In this embodiment, two saw blade bases 1 are combined and connected together to form a combined saw blade. During the slotting operation, the combined saw blade rotates, and the cutter head 4 on the saw teeth 2 cuts the surface of the workpiece, thereby processing a groove of appropriate width on the surface of the workpiece. During the slotting process, the chips are discharged outward through the chip guide groove 3. The width of the cutter head 4 is greater than the thickness of the saw blade base 1, and the cutter heads 4 on the two adjacent saw blade bases 1 are staggered to prevent the cutter head 4 from interfering with the saw blade base 1. The outline of the cutter head 4 is smaller than the outline of the chip guide groove 3 to prevent the cutter head 4 from interfering with the chip guide groove 3 and affecting the discharge of chips.

[0065] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A combined saw blade for grooving, characterized in that: It comprises a plurality of saw blade bases which are fastened together, a plurality of saw teeth are evenly arranged on the edge of the saw blade base, the grooves between adjacent saw teeth form a chip guide groove, and a cutter head is arranged on the side of the saw teeth facing the cutting direction; the cutter heads on two adjacent saw blade bases are staggered so that the cutter head on one saw blade base corresponds to the chip guide groove on the other saw blade base.

2. A slotting combined saw blade according to claim 1, characterized in that: A tooth seat is arranged on the saw teeth, and a cutter head is welded on the tooth seat.

3. The slotting combined saw blade according to claim 1, characterized in that: The cutter head is tilted radially outward toward the cutting direction, with an inclination angle of 5-10 degrees.

4. The slotting combined saw blade according to claim 1, characterized in that: A plurality of narrow heat dissipation grooves are evenly arranged on the edge of the saw blade base body. The narrow heat dissipation grooves are in the shape of silk threads, and the inner ends of the narrow heat dissipation grooves are in a "G"-shaped structure.

5. The slotting combined saw blade according to claim 1, characterized in that: A plurality of fastening holes are arranged at the edge of the saw blade base body, and the saw blade base bodies are connected with rivet columns, which are riveted between the fastening holes.

6. The slotting combined saw blade according to claim 1, characterized in that: A concave auxiliary guide groove is arranged on the side of the saw tooth away from the cutter head, and the auxiliary guide groove extends outward to the outer end of the saw tooth.

7. The slotting combined saw blade according to claim 1, characterized in that: A gasket is installed between two adjacent saw blade bases.

8. The slotting combined saw blade according to claim 7, characterized in that: A plurality of indentations are arranged on the surface of the saw blade base body, and convex ribs are arranged on the surface of the gasket corresponding to the indentations, and the convex ribs fit in with the indentations.

9. The slotting combined saw blade according to claim 7, characterized in that: The chip guide grooves on the edge of the gasket and the saw blade bases on both sides are correspondingly provided with chip removal grooves.

10. A slotting combined saw blade according to any one of claims 1 to 9, characterized in that: The saw blade base has an HRC hardness of 42-46 after heat treatment.

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