Paddling groove saw blade capable of easily discharging chips and free of tip collapse and machining method

Abstract

The invention discloses a paddle-tumbler saw blade capable of easily discharging chips and avoiding tip breakage and a machining method, and aims to overcome the defects of chip blockage, saw clamping, slipping, breakage and breakage of a tool nose in the use process of the saw blade. The saw blade comprises a saw blade body, a circle of saw teeth are arranged on the edge of the saw blade body, a plurality of long tool bits are evenly distributed on the edge of the saw blade body in the circumferential direction, the long tool bits are arranged on the saw teeth, and short tool bits are arranged on the saw teeth between every two adjacent long tool bits. The edge of the saw blade body is provided with a plurality of radiating grooves. According to the paddle-tumbler saw blade, the phenomena of chip blockage, saw clamping, slipping, breakage and cutter point breakage in the use process of the saw blade are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of saw blades, and more particularly to a notching saw blade which is easy to remove chips and does not break the tip, and a processing method thereof. Background Art

[0002] Saw blades are widely used as cutting tools in the processing of wood, metal, plastic, stone and other materials. Saw blades generally shear materials through the teeth set on them. After long-term use, the teeth are easily worn and affect the cutting effect. For this reason, many saw blades are now welded with carbide blades on the teeth. Carbide blades are wear-resistant and can extend the service life of saw blades. However, many saw blades are currently blocked by chips, stuck, slipped, broken and have chipped blade tips. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention provides a notching saw blade and a processing method that are easy to remove chips and do not break the tip, thereby solving the problems of chip blockage, saw sticking, slipping, breakage and tip breakage during the use of the saw blade.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a notching saw blade that is easy to remove chips and does not break the tip, comprising a saw blade body, a circle of saw teeth arranged on the edge of the saw blade body, a plurality of long blade heads evenly distributed circumferentially on the edge of the saw blade body, the long blade heads are arranged on the saw teeth, and short blade heads are arranged on the saw teeth between two adjacent long blade heads; a plurality of heat dissipation grooves are arranged on the edge of the saw blade body.

[0005] When the notching saw blade is working, the saw blade body rotates, and the long blade head and the short blade head realize the cutting of the material. The long blade head and the short blade head have high hardness and long service life. The long blade head can scrape the chips while realizing cutting, preventing the chip blocking phenomenon. The chips can be discharged in time to avoid the saw being stuck. The heat dissipation groove is set on the edge of the saw blade body to improve the heat dissipation effect of the saw blade, reduce noise and vibration, and thus prevent the saw blade from slipping, breaking, and the tip of the blade from breaking.

[0006] Preferably, heat dissipation holes are arranged on the saw blade body corresponding to the heat dissipation grooves, and the ends of the heat dissipation grooves are connected to the heat dissipation holes.

[0007] The heat dissipation holes can speed up the heat dissipation and reduce noise. Moreover, the heat dissipation holes can reduce the stress concentration at the end of the heat dissipation groove and prevent the saw blade from cracking at the end of the heat dissipation groove. Furthermore, after the heat dissipation holes and heat dissipation grooves are set, the saw blade has a certain elasticity in the circumference, and the saw blade has a certain buffer during rotation, which is conducive to preventing the saw from jamming.

[0008] Preferably, a heat dissipation guide groove is arranged on the saw blade body corresponding to the heat dissipation groove, the heat dissipation guide groove is arc-shaped, the heat dissipation groove end is connected to the heat dissipation guide groove, and the heat dissipation groove width gradually increases towards the heat dissipation guide groove.

[0009] The width of the heat dissipation groove gradually increases towards the heat dissipation guide groove. During the rotation of the saw blade, it plays a guiding role, which is conducive to the rapid flow of airflow towards the heat dissipation guide groove. In addition, the heat dissipation guide groove is arc-shaped with a large exposed area, which improves the heat dissipation effect. When the cutting depth is deep and the heat dissipation guide groove is immersed in the material, as the saw blade rotates, the heat dissipation groove and the heat dissipation guide groove can also bring out the chips, improving the chip removal effect.

[0010] Preferably, a center hole is provided in the middle of the saw blade body, a keyway is provided on the side wall of the center hole, and a stress relief arc groove is provided at the corner of the keyway.

[0011] The center hole is designed to facilitate the installation of the saw blade on the shaft, and the keyway is used to fix the saw blade and the shaft to prevent them from moving relative to each other. The stress relief arc groove can relieve stress and prevent cracks.

[0012] Preferably, a chip groove is provided between two adjacent saw teeth on the edge of the saw blade body, and the bottom of the chip groove is in a concave arc structure.

[0013] The chip removal groove is set to facilitate the discharge of chips. The bottom of the chip removal groove is an inwardly concave arc structure, which can reduce the residual chips at the bottom of the chip removal groove.

[0014] Preferably, the bottom of the chip removal groove corresponding to the long cutter head extends downward to form a chip outlet.

[0015] The chip outlet is set to facilitate the discharge of chips, especially when the cutting depth is shallow, the chip outlet is exposed to the outside, so that the chips can be quickly discharged through the chip outlet. The bottom of the chip groove extends downward to form a chip outlet, which increases the chip space and is conducive to improving the chip removal effect.

[0016] Preferably, a protrusion is provided on the side wall of the chip removal groove connected to the long cutter head, and the lower end of the long cutter head is supported on the protrusion.

[0017] The protrusion not only realizes reliable support for the long cutter head and improves the reliability of the long cutter head connection, but also the protrusion protrudes from the side wall of the chip discharge groove. When the chips collide with the side wall of the chip discharge port, they move back to the protrusion, and the protrusion blocks the chips so that the chips are discharged outward.

[0018] Preferably, the upper edge of the front side of the long blade head is a cutting edge, the upper side of the long blade head is inclined from front to back toward the center of the saw blade body, and the left and right ends of the cutting edge are rounded; the left and right sides of the long blade head are inclined from front to back toward each other.

[0019] The long blade head cuts through the edge of the blade on the upper edge. The upper side of the long blade head tilts from front to back toward the center of the saw blade body to prevent the upper side from contacting the material during cutting. The left and right ends of the blade edge are rounded, which is conducive to chip removal. The left and right sides of the long blade head tilt from front to back toward each other to prevent the left and right sides of the long blade head from contacting the material, reducing cutting resistance and friction heat. The left and right edges of the front side of the long blade head contact the side walls of the cutting groove to scrape off the chips and improve the chip removal effect.

[0020] Preferably, a chip guide groove is provided on the front side surface of the long blade head, and the chip guide groove is in a concave arc shape from top to bottom and from left to right.

[0021] The chip guide groove guides the chips. During the rotation of the saw blade, the chips move along the arc-shaped chip guide groove and are discharged outward, which helps to speed up the chip removal speed and improve the chip removal effect.

[0022] A method for processing a notched saw blade that is easy to remove chips and does not break the tip, which realizes the processing of a notched saw blade that is easy to remove chips and does not break the tip, comprises the following steps: S1, processing a chip groove on the edge of a disc-shaped saw blade blank to form a circle of saw teeth; S2, processing a heat dissipation groove on the edge of the disc-shaped saw blade blank; S3, heat treating the disc-shaped saw blade blank; S4, respectively welding a long blade head and a short blade head to the saw teeth.

[0023] First, a chip groove is machined on the edge of the disc-shaped saw blade blank to form a circle of saw teeth, and then a heat dissipation groove is machined on the edge of the saw blade blank. After heat treatment, the internal organizational structure of the saw blade is adjusted to improve its mechanical, physical and chemical properties. The hardness and wear resistance of the saw blade are increased, the internal stress of the saw blade is eliminated, and deformation and cracking are prevented. Finally, the long blade head and the short blade head are welded to the saw teeth respectively. The long blade head and the short blade head have good hardness, wear resistance and long service life. The saw blade is easy to process. If the long blade head and the short blade head are worn and cannot be used, the long blade head and the short blade head can be directly replaced without replacing the entire saw blade.

[0024] Compared with the prior art, the present invention has the following beneficial effects: (1) the notched saw blade of the present invention solves the problems of chip blockage, saw sticking, slipping, breakage and blade tip chipping during the use of the saw blade; (2) the saw blade has good heat dissipation effect, low noise and vibration, and long service life during use; (3) the chip removal speed is fast and the chip removal effect is good during the use of the saw blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of embodiment 1 of the present invention.

[0026] Figure 2 It is a front view of Example 1 of the present invention.

[0027] Figure 3It is a side view of Example 1 of the present invention.

[0028] Figure 4 It is a front view of Example 2 of the present invention.

[0029] Figure 5 It is a front view of Example 3 of the present invention.

[0030] In the figure: 1. saw blade body, 2. saw teeth, 3. chip removal groove, 4. long blade head, 5. short blade head, 6. mounting notch, 7. front side of long blade head, 8. cutting edge, 9. upper side of long blade head, 10. left side of long blade head, 11. heat dissipation groove, 12. heat dissipation hole, 13. heat dissipation guide groove, 14. chip guide groove, 15. chip discharge port, 16. bump, 17. center hole, 18. keyway, 19. stress relief arc groove. DETAILED DESCRIPTION

[0031] 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 notching saw blade that is easy to remove chips and does not break the tip (see attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 ), including a saw blade body 1, the saw blade body 1 is a disc-shaped thin sheet structure, a circle of saw teeth 2 is arranged on the edge of the saw blade body 1, and a chip groove 3 is arranged between two adjacent saw teeth 2 on the edge of the saw blade body 1, and the bottom of the chip groove 3 is a concave arc structure. The chip groove 3 is inclined outwardly toward one side of the saw blade cutting rotation direction, and the inclined surface is arc-shaped, so that the end of the saw tooth 2 is a pointed structure. A plurality of long blade heads 4 are evenly distributed around the edge of the saw blade body 1, and the long blade heads 4 are arranged on the saw teeth 2. Short blade heads 5 are arranged on the saw teeth 2 between two adjacent long blade heads 4; the long blade heads 4 and the short blade heads 5 are welded together with the saw teeth 2, and the welding is performed by high-frequency welding using silver solder sheets as the medium to ensure that the welding strength is greater than 120MPa. An installation notch 6 is arranged on the front side wall of the saw tooth 2 connected to the short blade head 5, and the short blade head 5 is installed at the installation notch 6, and the bottom and rear side surfaces of the short blade head 5 are both close to the side walls of the installation notch 6, and the top of the short blade head 5 exposes the outer end of the saw tooth 2. The length of the long blade head 4 is greater than that of the short blade head 5 , and both the long blade head 4 and the short blade head 5 are arranged from the outer end to the inner end and toward the rear, deviating from the radial direction of the saw blade body 1 .

[0032] The upper edge of the front side 7 of the long blade head is a cutting edge 8, and the upper side 9 of the long blade head is inclined from front to back toward the center of the saw blade body 1, and the left and right ends of the cutting edge 8 are rounded; the left side 10 and the right side of the long blade head are inclined from front to back toward each other.

[0033] The upper edge of the front side of the short blade head 5 is a cutting edge 8, and the upper side of the short blade head 5 is inclined from front to back toward the center of the saw blade body 1, and the left and right ends of the cutting edge 8 are rounded; the left and right sides of the short blade head 5 are inclined from front to back toward each other.

[0034] A plurality of heat dissipation grooves 11 are arranged on the edge of the saw blade body 1. In this embodiment, four long blade heads 4 are evenly arranged on the edge of the saw blade body 1 in the circumferential direction, and four heat dissipation grooves 11 are evenly arranged on the edge of the saw blade body 1, and a heat dissipation groove 11 is arranged in the middle of two adjacent long blade heads 4. Heat dissipation holes 12 are arranged on the saw blade body 1 corresponding to the heat dissipation grooves 11, and the ends of the heat dissipation grooves 11 are connected to the heat dissipation holes 12. The heat dissipation grooves 11 are elongated grooves of equal width, and the heat dissipation holes 12 and the heat dissipation grooves 11 have rounded transitions.

[0035] The heat dissipation holes 12 can speed up the heat dissipation speed and reduce the noise. Moreover, the heat dissipation holes 12 can reduce the stress concentration phenomenon at the end of the heat dissipation groove 11, and prevent the saw blade from cracking at the end of the heat dissipation groove 11. Furthermore, after the heat dissipation holes 12 and the heat dissipation groove 11 are set, the saw blade has a certain elasticity in the circumference, and the saw blade has a certain buffer during the rotation process, which is conducive to preventing the saw from getting stuck.

[0036] The bottom of the chip groove 3 corresponding to the long blade head 4 extends downward to form a chip outlet 15. A protrusion 16 is arranged on the side wall of the chip groove 3 connected to the long blade head 4, and the protrusion 16 protrudes outward by 2-3.5 mm, freeing up more space for the chip groove 3, increasing the chip capacity of the chip groove 3, and facilitating chip removal. The lower end of the long blade head 4 is supported on the protrusion 16.

[0037] The chip outlet 15 is provided to facilitate the discharge of chips outward, especially when the cutting depth is shallow, the chip outlet 15 is exposed to the outside, so that the chips can be quickly discharged through the chip outlet 15. The bottom of the chip groove 3 extends downward to form the chip outlet 15, which increases the chip holding space and is conducive to improving the chip removal effect. The protrusion 16 not only realizes the reliable support of the long blade head 4, but also improves the reliability of the connection of the long blade head 4. Moreover, the protrusion 16 protrudes from the side wall of the chip groove 3. When the chips collide with the side wall of the chip outlet 15, they move back to the protrusion 16, and the protrusion 16 blocks the chips so that the chips are discharged outward.

[0038] A center hole 17 is provided in the middle of the saw blade body 1, a key slot 18 is provided on the side wall of the center hole 17, a stress relief arc slot 19 is provided at the corner of the key slot 18, and chamfers are provided at both ends of the center hole 17. The center hole 17 is provided to facilitate installation of the saw blade on the rotating shaft, and the key slot 18 is used to fix the saw blade and the rotating shaft to prevent the two from moving relative to each other. The stress relief arc slot 19 can relieve stress and prevent cracks.

[0039] When the notching saw blade is working, the saw blade body 1 rotates, and the long blade head 4 and the short blade head 5 realize the cutting process of the material. The long blade head 4 and the short blade head 5 have high hardness and long service life. The long blade head 4 can scrape away the chips while realizing cutting, so as to prevent the chip blocking phenomenon. The chips can be discharged in time to avoid the saw being stuck. The heat dissipation groove 11 is arranged on the edge of the saw blade body 1, so as to improve the heat dissipation effect of the saw blade, reduce noise and vibration, and thus prevent the saw blade from slipping, breaking and the chipping of the blade tip.

[0040] A method for processing a notched saw blade that is easy to remove chips and does not break the tip, which realizes the processing of a notched saw blade that is easy to remove chips and does not break the tip, comprises the following steps: S1, processing a chip groove 3 on the edge of a disc-shaped saw blade blank to form a circle of saw teeth 2; S2, processing a heat dissipation groove 11 and a heat dissipation hole 12 on the edge of the disc-shaped saw blade blank; S3, heat treating the disc-shaped saw blade blank; S4, welding a long blade head 4 and a short blade head 5 to the saw teeth 2 respectively.

[0041] First, a chip groove 3 is machined on the edge of a disc-shaped saw blade blank to form a circle of saw teeth 2, and then a heat dissipation groove 11 is machined on the edge of the saw blade blank. After heat treatment, the internal organizational structure of the saw blade is adjusted to improve its mechanical, physical and chemical properties. The hardness and wear resistance of the saw blade are increased, the internal stress of the saw blade is eliminated, and deformation and cracking are prevented. Finally, the long blade head 4 and the short blade head 5 are welded to the saw teeth 2 respectively. The long blade head 4 and the short blade head 5 have good hardness, wear resistance and long service life. The saw blade is easy to process. If the long blade head 4 and the short blade head 5 are worn and cannot be used, the long blade head 4 and the short blade head 5 can be directly replaced without replacing the entire saw blade.

[0042] Embodiment 2: A notching saw blade that is easy to remove chips and does not break the tip (see attached Figure 4 ), including a saw blade body 1, the saw blade body 1 is a disc-shaped thin sheet structure, a circle of saw teeth 2 is arranged on the edge of the saw blade body 1, and a chip groove 3 is arranged between two adjacent saw teeth 2 on the edge of the saw blade body 1, and the bottom of the chip groove 3 is a concave arc structure. The chip groove 3 is inclined outwardly toward one side of the saw blade cutting rotation direction, and the inclined surface is arc-shaped, so that the end of the saw tooth 2 is a pointed structure. A plurality of long blade heads 4 are evenly distributed around the edge of the saw blade body 1, and the long blade heads 4 are arranged on the saw teeth 2. Short blade heads 5 are arranged on the saw teeth 2 between two adjacent long blade heads 4; the long blade heads 4 and the short blade heads 5 are welded together with the saw teeth 2, and the welding is performed by high-frequency welding using silver solder sheets as the medium to ensure that the welding strength is greater than 120MPa. An installation notch 6 is arranged on the front side wall of the saw tooth 2 connected to the short blade head 5, and the short blade head 5 is installed at the installation notch 6, and the bottom and rear side surfaces of the short blade head 5 are both close to the side walls of the installation notch 6, and the top of the short blade head 5 exposes the outer end of the saw tooth 2. The length of the long blade head 4 is greater than that of the short blade head 5 , and both the long blade head 4 and the short blade head 5 are arranged from the outer end to the inner end and toward the rear, deviating from the radial direction of the saw blade body 1 .

[0043] The upper edge of the front side 7 of the long blade head is a cutting edge 8, and the upper side 9 of the long blade head is inclined from front to back toward the center of the saw blade body 1, and the left and right ends of the cutting edge 8 are rounded; the left side 10 and the right side of the long blade head are inclined from front to back toward each other.

[0044] The upper edge of the front side of the short blade head 5 is a cutting edge 8, and the upper side of the short blade head 5 is inclined from front to back toward the center of the saw blade body 1, and the left and right ends of the cutting edge 8 are rounded; the left and right sides of the short blade head 5 are inclined from front to back toward each other.

[0045] A plurality of heat dissipation grooves 11 are arranged on the edge of the saw blade body 1. In this embodiment, four long blade heads 4 are evenly arranged on the edge of the saw blade body 1 in the circumferential direction, and four heat dissipation grooves 11 are evenly arranged on the edge of the saw blade body 1, and a heat dissipation groove 11 is arranged in the middle of two adjacent long blade heads 4. A heat dissipation guide groove 13 is arranged on the saw blade body 1 in correspondence with the heat dissipation groove 11, and the heat dissipation guide groove 13 is arc-shaped, and the arc-shaped heat dissipation guide groove 13 is arranged concentrically with the saw blade body 1, and the end of the heat dissipation groove 11 is connected to the heat dissipation guide groove 13, and the width of the heat dissipation groove 11 gradually increases toward the heat dissipation guide groove 13.

[0046] The width of the heat dissipation groove 11 gradually increases toward the heat dissipation guide groove 13, and plays a guiding role during the rotation of the saw blade, which is conducive to the rapid flow of airflow toward the heat dissipation guide groove 13. In addition, the heat dissipation guide groove 13 is arc-shaped with a large exposed area, which improves the heat dissipation effect. When the cutting depth is deep and the heat dissipation guide groove 13 is immersed in the material, as the saw blade rotates, the heat dissipation groove 11 and the heat dissipation guide groove 13 can also take out the chips, thereby improving the chip removal effect. After the heat dissipation guide groove 13 and the heat dissipation groove 11 are set, the saw blade has a certain elasticity in the circumference, and has a certain buffer during the rotation of the saw blade, which is conducive to preventing the saw from getting stuck.

[0047] The bottom of the chip groove 3 corresponding to the long blade head 4 extends downward to form a chip outlet 15. A protrusion 16 is arranged on the side wall of the chip groove 3 connected to the long blade head 4, and the protrusion 16 protrudes outward by 2-3.5 mm, freeing up more space for the chip groove 3, increasing the chip capacity of the chip groove 3, and facilitating chip removal. The lower end of the long blade head 4 is supported on the protrusion 16.

[0048] The chip outlet 15 is provided to facilitate the discharge of chips outward, especially when the cutting depth is shallow, the chip outlet 15 is exposed to the outside, so that the chips can be quickly discharged through the chip outlet 15. The bottom of the chip groove 3 extends downward to form the chip outlet 15, which increases the chip holding space and is conducive to improving the chip removal effect. The protrusion 16 not only realizes the reliable support of the long blade head 4, but also improves the reliability of the connection of the long blade head 4. Moreover, the protrusion 16 protrudes from the side wall of the chip groove 3. When the chips collide with the side wall of the chip outlet 15, they move back to the protrusion 16, and the protrusion 16 blocks the chips so that the chips are discharged outward.

[0049] A center hole 17 is provided in the middle of the saw blade body 1, a key slot 18 is provided on the side wall of the center hole 17, a stress relief arc slot 19 is provided at the corner of the key slot 18, and chamfers are provided at both ends of the center hole 17. The center hole 17 is provided to facilitate installation of the saw blade on the rotating shaft, and the key slot 18 is used to fix the saw blade and the rotating shaft to prevent the two from moving relative to each other. The stress relief arc slot 19 can relieve stress and prevent cracks.

[0050] When the notching saw blade is working, the saw blade body 1 rotates, and the long blade head 4 and the short blade head 5 realize the cutting process of the material. The long blade head 4 and the short blade head 5 have high hardness and long service life. The long blade head 4 can scrape away the chips while realizing cutting, so as to prevent the chip blocking phenomenon. The chips can be discharged in time to avoid the saw being stuck. The heat dissipation groove 11 is arranged on the edge of the saw blade body 1, so as to improve the heat dissipation effect of the saw blade, reduce noise and vibration, and thus prevent the saw blade from slipping, breaking and the chipping of the blade tip.

[0051] A method for processing a notched saw blade that is easy to remove chips and does not break the tip, which realizes the processing of a notched saw blade that is easy to remove chips and does not break the tip, comprises the following steps: S1, processing a chip groove 3 on the edge of a disc-shaped saw blade blank to form a circle of saw teeth 2; S2, processing a heat dissipation groove 11 and a heat dissipation guide groove 13 on the edge of the disc-shaped saw blade blank; S3, heat treating the disc-shaped saw blade blank; S4, welding a long blade head 4 and a short blade head 5 to the saw teeth 2 respectively.

[0052] First, a chip groove 3 is machined on the edge of a disc-shaped saw blade blank to form a circle of saw teeth 2, and then a heat dissipation groove 11 is machined on the edge of the saw blade blank. After heat treatment, the internal organizational structure of the saw blade is adjusted to improve its mechanical, physical and chemical properties. The hardness and wear resistance of the saw blade are increased, the internal stress of the saw blade is eliminated, and deformation and cracking are prevented. Finally, the long blade head 4 and the short blade head 5 are welded to the saw teeth 2 respectively. The long blade head 4 and the short blade head 5 have good hardness, wear resistance and long service life. The saw blade is easy to process. If the long blade head 4 and the short blade head 5 are worn and cannot be used, the long blade head 4 and the short blade head 5 can be directly replaced without replacing the entire saw blade.

[0053] Embodiment 3: A notching saw blade that is easy to remove chips and does not break the tip (see attached Figure 5), including a saw blade body 1, the saw blade body 1 is a disc-shaped thin sheet structure, a circle of saw teeth 2 is arranged on the edge of the saw blade body 1, and a chip groove 3 is arranged between two adjacent saw teeth 2 on the edge of the saw blade body 1, and the bottom of the chip groove 3 is a concave arc structure. The chip groove 3 is inclined outwardly toward one side of the saw blade cutting rotation direction, and the inclined surface is arc-shaped, so that the end of the saw tooth 2 is a pointed structure. A plurality of long blade heads 4 are evenly distributed around the edge of the saw blade body 1, and the long blade heads 4 are arranged on the saw teeth 2. Short blade heads 5 are arranged on the saw teeth 2 between two adjacent long blade heads 4; the long blade heads 4 and the short blade heads 5 are welded together with the saw teeth 2, and the welding is performed by high-frequency welding using silver solder sheets as the medium to ensure that the welding strength is greater than 120MPa. An installation notch 6 is arranged on the front side wall of the saw tooth 2 connected to the short blade head 5, and the short blade head 5 is installed at the installation notch 6, and the bottom and rear side surfaces of the short blade head 5 are both close to the side walls of the installation notch 6, and the top of the short blade head 5 exposes the outer end of the saw tooth 2. The length of the long blade head 4 is greater than that of the short blade head 5 , and both the long blade head 4 and the short blade head 5 are arranged from the outer end to the inner end and toward the rear, deviating from the radial direction of the saw blade body 1 .

[0054] The upper edge of the front side 7 of the long blade head is a cutting edge 8, and the upper side 9 of the long blade head is inclined from front to back toward the center of the saw blade body 1, and the left and right ends of the cutting edge 8 are rounded; the left side 10 and the right side of the long blade head are inclined from front to back toward each other.

[0055] The upper edge of the front side of the short blade head 5 is a cutting edge 8, and the upper side of the short blade head 5 is inclined from front to back toward the center of the saw blade body 1, and the left and right ends of the cutting edge 8 are rounded; the left and right sides of the short blade head 5 are inclined from front to back toward each other. One of the two adjacent short blade heads 5 is set to the left and the other to the right. When cutting, the left side of one blade head contacts the left side wall of the cutting groove, and the right side of the other blade head contacts the right side wall of the cutting groove to avoid chip jamming.

[0056] A plurality of heat dissipation grooves 11 are arranged on the edge of the saw blade body 1. In the present embodiment, four long blade heads 4 are evenly arranged on the edge of the saw blade body 1 in the circumferential direction, and four heat dissipation grooves 11 are evenly arranged on the edge of the saw blade body 1, and a heat dissipation groove 11 is arranged in the middle position of two adjacent long blade heads 4. A heat dissipation guide groove 13 is arranged on the saw blade body 1 in correspondence with the heat dissipation groove 11. The heat dissipation guide groove 13 is arc-shaped, and the arc-shaped heat dissipation guide groove 13 is arranged concentrically with the saw blade body 1. The end of the heat dissipation groove 11 is connected to the heat dissipation guide groove 13, and the width of the heat dissipation groove 11 gradually increases in the direction close to the heat dissipation guide groove 13. A chip guide groove 14 is arranged on the front side surface 7 of the long blade head, and the chip guide groove 14 is concave arc-shaped from top to bottom and from left to right. The upper and lower ends of the chip guide groove 14 are respectively close to the upper and lower ends of the front side surface 7 of the long blade head, and the left and right ends of the chip guide groove 14 are respectively close to the left and right ends of the front side surface 7 of the long blade head.

[0057] The width of the heat dissipation groove 11 gradually increases toward the heat dissipation guide groove 13, and during the rotation of the saw blade, it plays a guiding role, which is conducive to the rapid flow of airflow toward the heat dissipation guide groove 13, and the heat dissipation guide groove 13 is arc-shaped, with a large exposed area, which improves the heat dissipation effect. When the cutting depth is deep and the heat dissipation guide groove 13 is immersed in the material, as the saw blade rotates, the heat dissipation groove 11 and the heat dissipation guide groove 13 can also bring out the chips, thereby improving the chip removal effect. After the heat dissipation guide groove 13 and the heat dissipation groove 11 are set, the saw blade has a certain elasticity in the circumference, and has a certain buffer during the rotation of the saw blade, which is conducive to preventing the saw from getting stuck. The chip guide groove 14 plays a guiding role for the chips. During the rotation of the saw blade, the chips move along the arc-shaped chip guide groove 14 and are discharged outward, which is conducive to speeding up the chip removal speed and improving the chip removal effect.

[0058] The bottom of the chip groove 3 corresponding to the long blade head 4 extends downward to form a chip outlet 15. A protrusion 16 is arranged on the side wall of the chip groove 3 connected to the long blade head 4, and the protrusion 16 protrudes outward by 2-3.5 mm, freeing up more space for the chip groove 3, increasing the chip capacity of the chip groove 3, and facilitating chip removal. The lower end of the long blade head 4 is supported on the protrusion 16.

[0059] The chip outlet 15 is provided to facilitate the discharge of chips outward, especially when the cutting depth is shallow, the chip outlet 15 is exposed to the outside, so that the chips can be quickly discharged through the chip outlet 15. The bottom of the chip groove 3 extends downward to form the chip outlet 15, which increases the chip holding space and is conducive to improving the chip removal effect. The protrusion 16 not only realizes the reliable support of the long blade head 4, but also improves the reliability of the connection of the long blade head 4. Moreover, the protrusion 16 protrudes from the side wall of the chip groove 3. When the chips collide with the side wall of the chip outlet 15, they move back to the protrusion 16, and the protrusion 16 blocks the chips so that the chips are discharged outward.

[0060] A center hole 17 is provided in the middle of the saw blade body 1, a key slot 18 is provided on the side wall of the center hole 17, a stress relief arc slot 19 is provided at the corner of the key slot 18, and chamfers are provided at both ends of the center hole 17. The center hole 17 is provided to facilitate installation of the saw blade on the rotating shaft, and the key slot 18 is used to fix the saw blade and the rotating shaft to prevent the two from moving relative to each other. The stress relief arc slot 19 can relieve stress and prevent cracks.

[0061] When the notching saw blade is working, the saw blade body 1 rotates, and the long blade head 4 and the short blade head 5 realize the cutting process of the material. The long blade head 4 and the short blade head 5 have high hardness and long service life. The long blade head 4 can scrape away the chips while realizing cutting, so as to prevent the chip blocking phenomenon. The chips can be discharged in time to avoid the saw being stuck. The heat dissipation groove 11 is arranged on the edge of the saw blade body 1, so as to improve the heat dissipation effect of the saw blade, reduce noise and vibration, and thus prevent the saw blade from slipping, breaking and the chipping of the blade tip.

[0062] A method for processing a notched saw blade that is easy to remove chips and does not break the tip, which realizes the processing of a notched saw blade that is easy to remove chips and does not break the tip, comprises the following steps: S1, processing a chip groove 3 on the edge of a disc-shaped saw blade blank to form a circle of saw teeth 2; S2, processing a heat dissipation groove 11 and a heat dissipation guide groove 13 on the edge of the disc-shaped saw blade blank; S3, heat treating the disc-shaped saw blade blank; S4, welding a long blade head 4 and a short blade head 5 to the saw teeth 2 respectively.

[0063] First, a chip groove 3 is machined on the edge of a disc-shaped saw blade blank to form a circle of saw teeth 2, and then a heat dissipation groove 11 is machined on the edge of the saw blade blank. After heat treatment, the internal organizational structure of the saw blade is adjusted to improve its mechanical, physical and chemical properties. The hardness and wear resistance of the saw blade are increased, the internal stress of the saw blade is eliminated, and deformation and cracking are prevented. Finally, the long blade head 4 and the short blade head 5 are welded to the saw teeth 2 respectively. The long blade head 4 and the short blade head 5 have good hardness, wear resistance and long service life. The saw blade is easy to process. If the long blade head 4 and the short blade head 5 are worn and cannot be used, the long blade head 4 and the short blade head 5 can be directly replaced without replacing the entire saw blade.

[0064] 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 notched saw blade that is easy to remove chips and does not break the tip, comprising a saw blade body, a circle of saw teeth arranged on the edge of the saw blade body, and characterized in that: A plurality of long blade heads are evenly distributed around the edge of the saw blade body. The long blade heads are arranged on the saw teeth, and short blade heads are arranged on the saw teeth between two adjacent long blade heads. A plurality of heat dissipation grooves are arranged on the edge of the saw blade body.

2. A notching saw blade with easy chip removal and no chipping according to claim 1, characterized in that: Heat dissipation holes are arranged on the saw blade body corresponding to the heat dissipation groove, and the ends of the heat dissipation groove are communicated with the heat dissipation holes.

3. The notching saw blade with easy chip removal and no chipping according to claim 1, characterized in that: A heat dissipation guide groove is provided on the saw blade body corresponding to the heat dissipation groove. The heat dissipation guide groove is arc-shaped. The end of the heat dissipation groove is connected to the heat dissipation guide groove. The width of the heat dissipation groove gradually increases towards the heat dissipation guide groove.

4. The notching saw blade with easy chip removal and no chipping according to claim 1, characterized in that: A center hole is provided in the middle of the saw blade body, a key slot is provided on the side wall of the center hole, and a stress relief arc slot is provided at the corner of the key slot.

5. The notching saw blade with easy chip removal and no chipping according to claim 1, characterized in that: A chip removal groove is provided between two adjacent saw teeth on the edge of the saw blade body, and the bottom of the chip removal groove is an inwardly concave arc structure.

6. A notching saw blade with easy chip removal and no chipping according to claim 5, characterized in that: The bottom of the chip removal groove corresponding to the long cutter head extends downward to form a chip discharge opening.

7. The notching saw blade with easy chip removal and no chipping according to claim 5, characterized in that: A convex block is arranged on the side wall of the chip removal groove connected to the long cutter head, and the lower end of the long cutter head is supported on the convex block.

8. A notching saw blade with easy chip removal and no chipping according to any one of claims 1 to 7, characterized in that: The upper edge of the front side of the long blade head is a cutting edge, and the upper side of the long blade head is inclined from front to back toward the center of the saw blade body, and the left and right ends of the cutting edge are rounded; the left and right sides of the long blade head are inclined from front to back toward each other.

9. A notching saw blade with easy chip removal and no chipping according to any one of claims 1 to 7, characterized in that: A chip guide groove is provided on the front side of the long blade head, and the chip guide groove is in a concave arc shape from top to bottom and from left to right.

10. A method for processing a notching saw blade that is easy to remove chips and does not break the tip, characterized in that: The processing of the notched saw blade that is easy to remove chips and does not break the tip as described in any one of claims 1 to 9 includes the following steps: S1, processing chip grooves on the edge of a disc-shaped saw blade blank to form a circle of saw teeth; S2, processing heat dissipation grooves on the edge of the disc-shaped saw blade blank; S3, heat-treating the disc-shaped saw blade blank; S4, welding the long blade head and the short blade head to the saw teeth respectively.

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