Acrylic cutting saw blade structure

Abstract

The invention discloses an acrylic cutting saw blade structure and aims to overcome the defect that cutting quality is affected due to the fact that a saw blade is poor in chip removal effect in the acrylic cutting process. The saw blade comprises a saw blade body, a plurality of tool bits are arranged on the edge of the saw blade body in the circumferential direction at intervals, a chip containing groove is formed between every two adjacent tool bits, abrasion-resistant coatings are arranged on the surfaces of the tool bits, and a PVD coating is arranged on the surface of the saw blade body. According to the acrylic cutting saw blade structure, the chip removal effect is good in the saw blade cutting process, and the cutting quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting tools, and more particularly to an acrylic cutting saw blade structure. Background Art

[0002] Currently, when cutting acrylic, due to the characteristics of acrylic, chip removal is poor, which easily leads to chip accumulation and affects the cutting quality. Chinese patent application No. 2021103593564 discloses a modular circular saw blade that can rotate the worn blade edge to achieve rapid cutting edge switching, thereby improving production efficiency and cutting performance while reducing the cost of alloy blade utilization. However, the chip removal effect during cutting is poor, affecting the cutting quality. Summary of the Invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention provides an acrylic cutting saw blade structure, which has a good chip removal effect during the saw blade cutting process and ensures cutting quality.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: an acrylic cutting saw blade structure, including a saw blade body, a plurality of cutter heads arranged at circumferential intervals on the edge of the saw blade body, a chip groove is arranged between adjacent cutter heads, a wear-resistant coating is arranged on the surface of the cutter heads, and a PVD coating is arranged on the surface of the saw blade body.

[0005] When cutting acrylic with a saw blade, the cutter head rotates with the blade, continuously cutting the acrylic. The high-hardness wear-resistant coating on the cutter head prevents wear and tear, extending its service life. The chip trough accommodates chips generated during the cutting process, ensuring smooth chip removal and preventing poor chip removal that could affect the cutting effect. The PVD coating on the saw blade body enhances its wear resistance and extends its service life. Furthermore, the smooth PVD coating prevents chip residue and facilitates smooth chip removal.

[0006] The acrylic cutting saw blade structure of this patent application has a good chip removal effect during the saw blade cutting process, ensuring the cutting quality.

[0007] Preferably, the tip of the cutter head is sandblasted to form a rounded corner.

[0008] The rounded corners at the tip of the knife can enhance the bonding strength of the wear-resistant coating.

[0009] Preferably, the wear-resistant coating is made of TiAlN.

[0010] TiAlN coating has high hardness, which can reach above HV3000.

[0011] Preferably, the rake angle α of the cutter head facing the cutting direction is 15-20°.

[0012] The rake angle of the cutter head should be set within a reasonable range to avoid affecting the cutting effect by making the rake angle too large or too small.

[0013] Preferably, the front cutting surface of the cutter head facing the cutting direction has a concave arc structure, and the arc radius R1 is 1.3-1.7 times the blade width H of the front side of the cutter head.

[0014] The rake face of the cutter head has a concave arc structure, which makes the chips move toward the center and is conducive to rapid chip removal.

[0015] Preferably, saw teeth corresponding to the cutter head are provided on the edge of the saw blade body, a tooth seat is provided on the side of the saw teeth facing the cutting direction, and the cutter head is mounted on the tooth seat.

[0016] The cutter head is installed on the tooth seat, which is stable and reliable.

[0017] Preferably, a plurality of heat dissipation lines are arranged circumferentially on the saw blade body at intervals. The heat dissipation lines include straight segments and arc segments. The straight segments are arranged radially, one end of the straight segments is connected to the chip groove, and the other end of the straight segments is connected to the arc segment.

[0018] The provision of the heat dissipation line is beneficial to improving the heat dissipation effect of the saw blade body.

[0019] Preferably, a spring piece is installed at the bottom of the chip groove, one end of the spring piece is fastened to the side wall of the chip groove, and the other end of the spring piece is connected to the toggle clamp block, the thickness of the toggle clamp block is greater than the thickness of the saw blade body; when the spring piece passes through the cutting groove, the toggle clamp block is clamped in the clamp groove and moves away from the cutting direction, so that the spring piece is close to the side wall of the chip groove; when the spring piece leaves the cutting groove, the spring piece bounces under the action of elastic force.

[0020] During the saw blade's rotational cutting process, when the spring clip passes through the slot, the toggle clamp, whose thickness is greater than that of the saw blade itself, clamps tightly in the slot and moves away from the saw blade, causing the spring clip to abut the sidewall of the chip flute. The flute is now fully open, providing ample space for chip removal. When the spring clip leaves the slot, the spring force pushes it outward, ejecting the chips trapped in the flute and spring clip, thereby enabling chip removal. The provision of the spring clip improves chip removal.

[0021] Another solution is to open an auxiliary groove at the bottom of the chip groove, and install a sliding ejector block in the auxiliary groove. The ejector block is connected to the ejector spring, and the thickness of the ejector block is greater than the thickness of the saw blade body; when the ejector block passes through the cutting groove, the ejector block is clamped in the clamping groove and moves away from the cutting direction, and the ejector block presses the ejector spring to expose the opening of the auxiliary groove; when the ejector block leaves the cutting groove, the ejector block is ejected to the opening of the auxiliary groove.

[0022] As the saw blade rotates and cuts, the ejector block passes through the slot. Because the thickness of the ejector block is greater than that of the saw blade, it clamps in the slot and moves away from the saw blade, compressing the ejector spring and exposing the auxiliary slot, which serves as a chip collector. When the ejector block leaves the slot, the ejector spring forces it into the slot, pushing the chips outward. The auxiliary slot increases chip capacity.

[0023] Preferably, a purge disc is installed on the saw blade body, an air storage ring cavity is set in the purge disc, and a plurality of purge holes are arranged at intervals on the purge disc. The purge holes are arranged toward the edge of the saw blade body; an air inlet connected to the air storage ring cavity is set on the purge disc.

[0024] Air flow is sent into the air storage ring cavity through the air inlet, and the air flow is blown outward from the purge hole to the edge of the saw blade body, which not only speeds up the discharge of chips, but also improves the heat dissipation effect of the saw blade body, which is beneficial to improving the cutting effect.

[0025] Compared with the prior art, the beneficial effects of the present invention are: (1) the acrylic cutting saw blade structure of the present patent application has a good chip removal effect during the saw blade cutting process, ensuring the cutting quality; (2) the saw blade has a large chip capacity during the cutting process, and has a good chip removal effect after cutting; (3) blowing air toward the edge of the saw blade during the saw blade cutting process can not only speed up the discharge of chips, but also improve the heat dissipation effect of the saw blade body, which is beneficial to improving the cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 It is a connection diagram of the cutter head of the present invention.

[0028] Figure 3 It is a top view of the cutter head of the present invention.

[0029] Figure 4 This is a diagram showing the chip groove structure of Example 2 of the present invention.

[0030] Figure 5 This is a diagram showing the chip groove structure of Example 3 of the present invention.

[0031] Figure 6 This is a structural diagram of Example 4 of the present invention.

[0032] Figure 7 It is a side view of Examples 4 and 5 of the present invention.

[0033] In the figure: 1. saw blade body, 2. fixing through hole, 3. cutter head, 4. chip groove, 5. saw teeth, 6. tooth seat, 7. heat dissipation line, 8. straight section, 9. arc section, 10. spring, 11. toggle clamp, 12. connecting section, 13. slot, 14. auxiliary slot, 15. ejector clamp, 16. ejector spring, 17. purge disk, 18. air storage ring cavity, 19. purge hole, 20. air inlet, 21. rotating shaft, 22. frame, 23. blowing blade, 24. closing seat, 25. air flow cavity, 26. transition ring cavity, 27. air supply pipe, 28. motor. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1: An acrylic cutting saw blade structure (see Figure 1 、 Figure 2 、 Figure 3 ), including a saw blade body 1, a fixed through hole 2 is provided in the center of the saw blade body 1, and the saw blade body 1 is fixedly connected to the rotary equipment through the fixed through hole 2. A number of cutter heads 3 are arranged at circumferential intervals on the edge of the saw blade body 1, and the cutter heads 3 are made of alloy. In this embodiment, 36 cutter heads 3 are evenly distributed around the circumference, and the cutter heads 3 are welded to the saw blade body 1. A chip groove 4 is provided between adjacent cutter heads 3, and the bottom of the chip groove 4 is an arc-shaped structure. The chip groove 4 is inclined toward the cutting direction, and a wear-resistant coating is provided on the surface of the cutter head 3. The wear-resistant coating is made of TiAlN, and the wear-resistant coating is plated on the surface of the cutter head 3. The TiAlN coating has a high hardness and can reach HV3000 or above. A PVD coating is provided on the surface of the saw blade body 1. The PVD coating is provided on the surface of the saw blade body 1, which is beneficial to improving the wear resistance of the saw blade body 1 and extending its service life. Moreover, the surface of the PVD coating is smooth, and it is not easy for chips to remain, which is beneficial to the smooth discharge of chips.

[0035] The tip of the blade head 3 is sandblasted to form a rounded corner. 300-mesh black diamond abrasive is used and sandblasted at a pressure of 2 bar to form a rounded corner R2. The rounded corner at the blade tip can enhance the bonding strength of the wear-resistant coating.

[0036] The rake angle α of the cutter head 3 facing the cutting direction is 15-20°. In this embodiment, the rake angle α of the cutter head 3 facing the cutting direction is 17°. The rake angle of the cutter head 3 is set within a reasonable range to avoid affecting the cutting effect by the rake angle being too large or too small.

[0037] The rake face of the cutter head 3, facing the cutting direction, has a concave arc-shaped structure. The arc radius R1 is 1.3-1.7 times the blade width H of the front side of the cutter head 3. In this embodiment, the arc radius R1 is 1.5 times the blade width H of the front side of the cutter head 3. The concave arc-shaped rake face of the cutter head 3 moves chips toward the center, facilitating rapid chip removal. Furthermore, the curved rake face creates a curved blade, which reduces shear forces on the blade during cutting and extends the service life of the cutter head 3.

[0038] The edge of the saw blade body 1 is provided with saw teeth 5 corresponding to the cutter head 3. A tooth seat 6 is provided on the saw teeth 5 facing the cutting direction. The tooth seat 6 is an L-shaped structure, and the cutter head 3 is mounted on the tooth seat 6. The outer side of the saw teeth 5 is inclined radially outward in the cutting direction, and a chip groove 4 is provided between two adjacent saw teeth 5.

[0039] Several heat sinks 7 are circumferentially spaced apart on the saw blade body 1. These heat sinks 7 include straight segments 8 and curved segments 9. The straight segments 8 are radially arranged, one end of each connecting to the chip flute 4 and the other end to the curved segment 9. A circular arc forms the transition between the straight segments 8 and the curved segment 9, which forms a C-shaped structure. The heat sinks 7 enhance heat dissipation within the saw blade body 1.

[0040] When cutting acrylic with a saw blade, the cutter head 3 rotates with the blade, continuously cutting the acrylic. Because the wear-resistant coating on the cutter head 3 is high in hardness, the surface of the cutter head 3 is less susceptible to wear and tear, extending its service life. The chip groove 4 accommodates chips generated during the cutting process, ensuring smooth chip removal and preventing poor chip removal that could affect the cutting effect. The PVD coating on the surface of the saw blade body 1 improves the wear resistance of the saw blade body 1 and extends its service life. Furthermore, the smooth surface of the PVD coating prevents chip residue from remaining, facilitating smooth chip removal.

[0041] The acrylic cutting saw blade structure of this patent application has a good chip removal effect during the saw blade cutting process, ensuring the cutting quality.

[0042] Example 2: An acrylic cutting saw blade structure (see Figure 4), including a saw blade body 1, a fixed through hole 2 is provided in the center of the saw blade body 1, and the saw blade body 1 is fixedly connected to the rotary equipment through the fixed through hole 2. A number of cutter heads 3 are arranged at circumferential intervals on the edge of the saw blade body 1, and the cutter heads 3 are made of alloy. In this embodiment, 36 cutter heads 3 are evenly distributed around the circumference, and the cutter heads 3 are welded to the saw blade body 1. A chip groove 4 is provided between adjacent cutter heads 3, and the bottom of the chip groove 4 is an arc-shaped structure. The chip groove 4 is inclined toward the cutting direction, and a wear-resistant coating is provided on the surface of the cutter head 3. The wear-resistant coating is made of TiAlN, and the wear-resistant coating is plated on the surface of the cutter head 3. The TiAlN coating has a high hardness and can reach HV3000 or above. A PVD coating is provided on the surface of the saw blade body 1. The PVD coating is provided on the surface of the saw blade body 1, which is beneficial to improving the wear resistance of the saw blade body 1 and extending its service life. Moreover, the surface of the PVD coating is smooth, and it is not easy for chips to remain, which is beneficial to the smooth discharge of chips.

[0043] The tip of the blade head 3 is sandblasted to form a rounded corner. 300-mesh black diamond abrasive is used and sandblasted at a pressure of 2 bar to form a rounded corner R2. The rounded corner at the blade tip can enhance the bonding strength of the wear-resistant coating.

[0044] The rake angle α of the cutter head 3 facing the cutting direction is 15-20°. In this embodiment, the rake angle α of the cutter head 3 facing the cutting direction is 17°. The rake angle of the cutter head 3 is set within a reasonable range to avoid affecting the cutting effect by the rake angle being too large or too small.

[0045] The rake face of the cutter head 3, facing the cutting direction, has a concave arc-shaped structure. The arc radius R1 is 1.3-1.7 times the blade width H of the front side of the cutter head 3. In this embodiment, the arc radius R1 is 1.5 times the blade width H of the front side of the cutter head 3. The concave arc-shaped rake face of the cutter head 3 moves chips toward the center, facilitating rapid chip removal. Furthermore, the curved rake face creates a curved blade, which reduces shear forces on the blade during cutting and extends the service life of the cutter head 3.

[0046] The edge of the saw blade body 1 is provided with saw teeth 5 corresponding to the cutter head 3. A tooth seat 6 is provided on the saw teeth 5 facing the cutting direction. The tooth seat 6 is an L-shaped structure, and the cutter head 3 is mounted on the tooth seat 6. The outer side of the saw teeth 5 is inclined radially outward in the cutting direction, and a chip groove 4 is provided between two adjacent saw teeth 5.

[0047] Several heat sinks 7 are circumferentially spaced apart on the saw blade body 1. These heat sinks 7 include straight segments 8 and curved segments 9. The straight segments 8 are radially arranged, one end of each connecting to the chip flute 4 and the other end to the curved segment 9. A circular arc forms the transition between the straight segments 8 and the curved segment 9, which forms a C-shaped structure. The heat sinks 7 enhance heat dissipation within the saw blade body 1.

[0048] A spring clip 10 is installed at the bottom of the chip flute 4. One end of the spring clip 10 is fastened to the side wall of the chip flute 4, and the other end of the spring clip 10 is connected to a toggle clamp 11. The thickness of the toggle clamp 11 is greater than the thickness of the saw blade body 1 and is comparable to the width of the cutter head 3. The toggle clamp 11 has a certain degree of flexibility and can be deformed. One end of the spring clip 10 is bent to form a connecting section 12. The spring clip 10 has an arc-shaped structure. A slot 13 is provided on the side wall of the chip flute 4, and the connecting section 12 is clamped in the slot 13. When the spring clip 10 passes through the cutting groove, the toggle clamp 11 is clamped in the slot and moves away from the cutting direction, so that the spring clip 10 is close to the side wall of the chip flute 4; when the spring clip 10 leaves the cutting groove, the spring clip 10 bounces under the action of the elastic force.

[0049] During the saw blade's rotational cutting process, when the spring clip 10 passes through the slot, the toggle clamp 11, whose thickness is greater than that of the saw blade body 1, becomes clamped in the slot and moves away from the cutting direction relative to the saw blade body 1, causing the spring clip 10 to abut against the sidewall of the chip flute 4. The chip flute 4 is now fully open, providing ample space for chip removal. When the spring clip 10 leaves the slot, the spring force causes it to spring outward, ejecting the chips trapped in the chip flute 4 and the spring clip 10, thereby achieving chip removal. The provision of the spring clip 10 improves chip removal.

[0050] When cutting acrylic with a saw blade, the cutter head 3 rotates with the blade, continuously cutting the acrylic. Because the wear-resistant coating on the cutter head 3 is high in hardness, the surface of the cutter head 3 is less susceptible to wear and tear, extending its service life. The chip groove 4 accommodates chips generated during the cutting process, ensuring smooth chip removal and preventing poor chip removal that could affect the cutting effect. The PVD coating on the surface of the saw blade body 1 improves the wear resistance of the saw blade body 1 and extends its service life. Furthermore, the smooth surface of the PVD coating prevents chip residue from remaining, facilitating smooth chip removal.

[0051] The acrylic cutting saw blade structure of this patent application has a good chip removal effect during the saw blade cutting process, ensuring the cutting quality.

[0052] Example 3: An acrylic cutting saw blade structure (see Figure 5), including a saw blade body 1, a fixed through hole 2 is provided in the center of the saw blade body 1, and the saw blade body 1 is fixedly connected to the rotary equipment through the fixed through hole 2. A number of cutter heads 3 are arranged at circumferential intervals on the edge of the saw blade body 1, and the cutter heads 3 are made of alloy. In this embodiment, 36 cutter heads 3 are evenly distributed around the circumference, and the cutter heads 3 are welded to the saw blade body 1. A chip groove 4 is provided between adjacent cutter heads 3, and the bottom of the chip groove 4 is an arc-shaped structure. The chip groove 4 is inclined toward the cutting direction, and a wear-resistant coating is provided on the surface of the cutter head 3. The wear-resistant coating is made of TiAlN, and the wear-resistant coating is plated on the surface of the cutter head 3. The TiAlN coating has a high hardness and can reach HV3000 or above. A PVD coating is provided on the surface of the saw blade body 1. The PVD coating is provided on the surface of the saw blade body 1, which is beneficial to improving the wear resistance of the saw blade body 1 and extending its service life. Moreover, the surface of the PVD coating is smooth, and it is not easy for chips to remain, which is beneficial to the smooth discharge of chips.

[0053] The tip of the blade head 3 is sandblasted to form a rounded corner. 300-mesh black diamond abrasive is used and sandblasted at a pressure of 2 bar to form a rounded corner R2. The rounded corner at the blade tip can enhance the bonding strength of the wear-resistant coating.

[0054] The rake angle α of the cutter head 3 facing the cutting direction is 15-20°. In this embodiment, the rake angle α of the cutter head 3 facing the cutting direction is 17°. The rake angle of the cutter head 3 is set within a reasonable range to avoid affecting the cutting effect by the rake angle being too large or too small.

[0055] The rake face of the cutter head 3, facing the cutting direction, has a concave arc-shaped structure. The arc radius R1 is 1.3-1.7 times the blade width H of the front side of the cutter head 3. In this embodiment, the arc radius R1 is 1.5 times the blade width H of the front side of the cutter head 3. The concave arc-shaped rake face of the cutter head 3 moves chips toward the center, facilitating rapid chip removal. Furthermore, the curved rake face creates a curved blade, which reduces shear forces on the blade during cutting and extends the service life of the cutter head 3.

[0056] The edge of the saw blade body 1 is provided with saw teeth 5 corresponding to the cutter head 3. A tooth seat 6 is provided on the saw teeth 5 facing the cutting direction. The tooth seat 6 is an L-shaped structure, and the cutter head 3 is mounted on the tooth seat 6. The outer side of the saw teeth 5 is inclined radially outward in the cutting direction, and a chip groove 4 is provided between two adjacent saw teeth 5.

[0057] Several heat sinks 7 are circumferentially spaced apart on the saw blade body 1. These heat sinks 7 include straight segments 8 and curved segments 9. The straight segments 8 are radially arranged, one end of each connecting to the chip flute 4 and the other end to the curved segment 9. A circular arc forms the transition between the straight segments 8 and the curved segment 9, which forms a C-shaped structure. The heat sinks 7 enhance heat dissipation within the saw blade body 1.

[0058] An auxiliary groove 14 is formed at the bottom of the chip groove 4. The auxiliary groove 14 is tilted toward the cutting direction. A sliding ejector block 15 is installed in the auxiliary groove 14. The ejector block 15 is connected to an ejector spring 16, and the ejector spring 16 is tightly connected to the bottom of the auxiliary groove 14. The two side walls of the auxiliary groove 14 and the two sides of the ejector block 15 are T-shaped structures. The T-shaped structures cooperate with each other to ensure the smooth sliding of the ejector block 15. The thickness of the ejector block 15 is greater than the thickness of the saw blade body 1 and is equivalent to the width of the cutter head 3. The movable clamp 11 has a certain degree of flexibility and can be deformed. When the ejector block 15 passes through the cutting groove, it is clamped in the clamping groove and moves away from the cutting direction. The ejector block 15 presses the ejector spring 16, exposing the opening of the auxiliary groove 14. When the ejector block 15 leaves the cutting groove, it is ejected to the opening of the auxiliary groove 14.

[0059] During the saw blade's rotational cutting process, as the ejector block 15 passes through the cut groove, it becomes clamped in the groove because its thickness is greater than that of the saw blade body 1. As the block 15 moves away from the cutting direction relative to the saw blade body 1, it compresses the ejector spring 16, exposing the auxiliary groove 14, which can be used to receive chips. When the block 15 leaves the cut groove, the ejector spring 16 pushes it into the opening of the auxiliary groove 14, pushing the chips outward. The provision of the auxiliary groove 14 increases chip capacity.

[0060] When cutting acrylic with a saw blade, the cutter head 3 rotates with the blade, continuously cutting the acrylic. Because the wear-resistant coating on the cutter head 3 is high in hardness, the surface of the cutter head 3 is less susceptible to wear and tear, extending its service life. The chip groove 4 accommodates chips generated during the cutting process, ensuring smooth chip removal and preventing poor chip removal that could affect the cutting effect. The PVD coating on the surface of the saw blade body 1 improves the wear resistance of the saw blade body 1 and extends its service life. Furthermore, the smooth surface of the PVD coating prevents chip residue from remaining, facilitating smooth chip removal.

[0061] The acrylic cutting saw blade structure of this patent application has a good chip removal effect during the saw blade cutting process, ensuring the cutting quality.

[0062] Example 4: An acrylic cutting saw blade structure (see Figure 6 、 Figure 7), including a saw blade body 1, a fixed through hole 2 is provided in the center of the saw blade body 1, and the saw blade body 1 is fixedly connected to the rotary equipment through the fixed through hole 2. A number of cutter heads 3 are arranged at circumferential intervals on the edge of the saw blade body 1, and the cutter heads 3 are made of alloy. In this embodiment, 36 cutter heads 3 are evenly distributed around the circumference, and the cutter heads 3 are welded to the saw blade body 1. A chip groove 4 is provided between adjacent cutter heads 3, and the bottom of the chip groove 4 is an arc-shaped structure. The chip groove 4 is inclined toward the cutting direction, and a wear-resistant coating is provided on the surface of the cutter head 3. The wear-resistant coating is made of TiAlN, and the wear-resistant coating is plated on the surface of the cutter head 3. The TiAlN coating has a high hardness and can reach HV3000 or above. A PVD coating is provided on the surface of the saw blade body 1. The PVD coating is provided on the surface of the saw blade body 1, which is beneficial to improving the wear resistance of the saw blade body 1 and extending its service life. Moreover, the surface of the PVD coating is smooth, and it is not easy for chips to remain, which is beneficial to the smooth discharge of chips.

[0063] The tip of the blade head 3 is sandblasted to form a rounded corner. 300-mesh black diamond abrasive is used and sandblasted at a pressure of 2 bar to form a rounded corner R2. The rounded corner at the blade tip can enhance the bonding strength of the wear-resistant coating.

[0064] The rake angle α of the cutter head 3 facing the cutting direction is 15-20°. In this embodiment, the rake angle α of the cutter head 3 facing the cutting direction is 17°. The rake angle of the cutter head 3 is set within a reasonable range to avoid affecting the cutting effect by the rake angle being too large or too small.

[0065] The rake face of the cutter head 3, facing the cutting direction, has a concave arc-shaped structure. The arc radius R1 is 1.3-1.7 times the blade width H of the front side of the cutter head 3. In this embodiment, the arc radius R1 is 1.5 times the blade width H of the front side of the cutter head 3. The concave arc-shaped rake face of the cutter head 3 moves chips toward the center, facilitating rapid chip removal. Furthermore, the curved rake face creates a curved blade, which reduces shear forces on the blade during cutting and extends the service life of the cutter head 3.

[0066] The edge of the saw blade body 1 is provided with saw teeth 5 corresponding to the cutter head 3. A tooth seat 6 is provided on the saw teeth 5 facing the cutting direction. The tooth seat 6 is an L-shaped structure, and the cutter head 3 is mounted on the tooth seat 6. The outer side of the saw teeth 5 is inclined radially outward in the cutting direction, and a chip groove 4 is provided between two adjacent saw teeth 5.

[0067] Several heat sinks 7 are circumferentially spaced apart on the saw blade body 1. These heat sinks 7 include straight segments 8 and curved segments 9. The straight segments 8 are radially arranged, one end of each connecting to the chip flute 4 and the other end to the curved segment 9. A circular arc forms the transition between the straight segments 8 and the curved segment 9, which forms a C-shaped structure. The heat sinks 7 enhance heat dissipation within the saw blade body 1.

[0068] A purge disc 17 is mounted on the saw blade body 1. An air storage ring cavity 18 is disposed within the purge disc 17. A plurality of purge holes 19 are circumferentially spaced apart on the purge disc 17, with the purge holes 19 facing the edge of the saw blade body 1. An air inlet 20 is disposed on the purge disc 17 and communicates with the air storage ring cavity 18. Air is introduced into the air storage ring cavity 18 through the air inlet 20, and then blown outward from the purge holes 19 toward the edge of the saw blade body 1. This not only speeds up the discharge of chips but also improves the heat dissipation of the saw blade body 1, thereby enhancing the cutting effect.

[0069] The saw blade body 1 is connected to the rotating shaft 21, and the rotating shaft 21 is rotatably installed on the frame 22. The blowing blades 23 are installed on the rotating shaft 21, and the closing seat 24 is installed on the frame 22. The air flow cavity 25 and the transition ring cavity 26 are set on the closing seat 24. The closing seat 24 is sealed and fitted with the purge disk 17. The purge disk 17 rotates with the saw blade. The closing seat 24 is fixedly set. The blowing blades 23 are set in the air flow cavity 25. The air inlet is connected between the transition ring cavity 26 and the air storage ring cavity 18. The air supply pipe 27 is connected between the air flow cavity 25 and the transition ring cavity 26. A motor 28 is installed on the frame 22, and the output shaft of the motor 28 is connected to the rotating shaft 21. The motor 28 drives the rotating shaft 21 to rotate, thereby driving the saw blade to rotate. The blowing blades 23 generate airflow during the rotation of the rotating shaft 21. The airflow is transported to the air storage ring cavity 18 through the air supply pipe 27, the transition ring cavity 26, and the air inlet 20, and finally blows radially outward from the purge hole 19 to the edge of the saw blade body 1, thereby accelerating the discharge of chips and improving the heat dissipation effect of the saw blade body 1.

[0070] When cutting acrylic with a saw blade, the cutter head 3 rotates with the blade, continuously cutting the acrylic. Because the wear-resistant coating on the cutter head 3 is high in hardness, the surface of the cutter head 3 is less susceptible to wear and tear, extending its service life. The chip groove 4 accommodates chips generated during the cutting process, ensuring smooth chip removal and preventing poor chip removal that could affect the cutting effect. The PVD coating on the surface of the saw blade body 1 improves the wear resistance of the saw blade body 1 and extends its service life. Furthermore, the smooth surface of the PVD coating prevents chip residue from remaining, facilitating smooth chip removal.

[0071] The acrylic cutting saw blade structure of this patent application has a good chip removal effect during the saw blade cutting process, ensuring the cutting quality.

[0072] Example 5: An acrylic cutting saw blade structure (see Figure 7), which has a structure similar to that of Embodiment 2 or 3, the main difference being that in this embodiment, a purge disc 17 is mounted on the saw blade body 1, an air storage annular cavity 18 is disposed within the purge disc 17, a plurality of purge holes 19 are circumferentially spaced apart on the purge disc 17, and the purge holes 19 are disposed toward the edge of the saw blade body 1; an air inlet 20 is disposed on the purge disc 17 and communicates with the air storage annular cavity 18. Airflow is introduced into the air storage annular cavity 18 through the air inlet 20, and then blown outward from the purge holes 19 toward the edge of the saw blade body 1. This not only accelerates the discharge of chips, but also improves the heat dissipation of the saw blade body 1, thereby enhancing the cutting effect.

[0073] The saw blade body 1 is connected to the rotating shaft 21, and the rotating shaft 21 is rotatably installed on the frame 22. The blowing blades 23 are installed on the rotating shaft 21, and the closing seat 24 is installed on the frame 22. The air flow cavity 25 and the transition ring cavity 26 are set on the closing seat 24. The closing seat 24 is sealed and fitted with the purge disk 17. The purge disk 17 rotates with the saw blade. The closing seat 24 is fixedly set. The blowing blades 23 are set in the air flow cavity 25. The air inlet is connected between the transition ring cavity 26 and the air storage ring cavity 18. The air supply pipe 27 is connected between the air flow cavity 25 and the transition ring cavity 26. A motor 28 is mounted on the frame 22. The output shaft of the motor 28 is connected to the rotating shaft 21. The motor 28 drives the rotating shaft 21 to rotate, thereby driving the saw blade. As the rotating shaft 21 rotates, the air blowing blades 23 generate airflow. The airflow is transported to the air storage ring cavity 18 through the air supply pipe 27, the transition ring cavity 26, and the air inlet 20. Finally, it is blown radially outward from the purge hole 19 toward the edge of the saw blade body 1, accelerating the discharge of chips and improving the heat dissipation effect of the saw blade body 1. The other structures are the same as those of Examples 2 or 3.

[0074] 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. An acrylic cutting saw blade structure, characterized in that: The utility model comprises a saw blade body, a plurality of cutter heads are arranged at intervals along the circumference of the edge of the saw blade body, a chip groove is arranged between adjacent cutter heads, a wear-resistant coating is arranged on the surface of the cutter heads, and a PVD coating is arranged on the surface of the saw blade body.

2. The acrylic cutting saw blade structure according to claim 1, characterized in that: The tip of the blade is sandblasted to form a rounded corner.

3. The acrylic cutting saw blade structure according to claim 1, characterized in that: The wear-resistant coating is made of TiAlN.

4. The acrylic cutting saw blade structure according to claim 1, wherein: The front angle α of the cutter head facing the cutting direction is 15~20°.

5. The acrylic cutting saw blade structure according to claim 1, characterized in that: The front cutting edge of the cutter head facing the cutting direction has a concave arc structure, and the arc radius R1 is 1.3-1.7 times the blade width H of the front side of the cutter head.

6. The acrylic cutting saw blade structure according to claim 1, characterized in that: Saw teeth corresponding to the cutter head are arranged on the edge of the saw blade body, a tooth seat is arranged on the side of the saw teeth facing the cutting direction, and the cutter head is installed on the tooth seat.

7. The acrylic cutting saw blade structure according to claim 1, characterized in that: A plurality of heat dissipation lines are arranged at intervals on the saw blade body in a circumferential direction. The heat dissipation lines include straight segments and arc segments. The straight segments are arranged radially. One end of the straight segment is connected to the chip groove, and the other end of the straight segment is connected to the arc segment.

8. The acrylic cutting saw blade structure according to claim 1, characterized in that: A spring piece is installed at the bottom of the chip groove, one end of the spring piece is fastened to the side wall of the chip groove, and the other end of the spring piece is connected to the toggle clamp block, the thickness of the toggle clamp block is greater than the thickness of the saw blade body; when the spring piece passes through the cutting groove, the toggle clamp block is clamped in the clamping groove and moves away from the cutting direction, so that the spring piece is close to the side wall of the chip groove; when the spring piece leaves the cutting groove, the spring piece bounces under the action of elastic force.

9. The acrylic cutting saw blade structure according to claim 1, characterized in that: An auxiliary groove is opened at the bottom of the chip groove, and a sliding ejector block is installed in the auxiliary groove. The ejector block is connected to the ejector spring, and the thickness of the ejector block is greater than the thickness of the saw blade body; when the ejector block passes through the cutting groove, the ejector block is clamped in the clamping groove and moves away from the cutting direction, and the ejector block presses the ejector spring to expose the opening of the auxiliary groove; when the ejector block leaves the cutting groove, the ejector block is ejected to the opening of the auxiliary groove.

10. An acrylic cutting saw blade structure according to any one of claims 1 to 9, characterized in that: A purge disc is installed on the saw blade body, an air storage ring cavity is set in the purge disc, and a plurality of purge holes are arranged at intervals on the purge disc. The purge holes are arranged towards the edge of the saw blade body; an air inlet connected to the air storage ring cavity is set on the purge disc.

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