Quick saw blade changing and locking device for a servo circular saw machine

Abstract

The utility model relates to the saw blade replacement technical field of circular sawing machine, and disclose a kind of quick saw blade replacement and locking device of servo circular sawing machine, including machine body and saw blade piece, the outer surface of the machine body is provided with connecting seat, the quick saw blade replacement and locking device of this servo circular sawing machine, the positioning hole of saw blade piece and the positioning piece insertion cooperation of connecting seat, for saw blade installation determine accurate radial and circumferential reference, avoid installation deviation, then rotate fixed part on worm, utilize worm gear meshing drive worm wheel plate rotation, worm wheel plate's No. The further drive of sliding slot, No. Sliding block fixed with it, linear motion is converted into along the No. Sliding slot of fixed part rotation movement;Finally, when locking, No. Sliding block drives lock piece to be inserted into the mounting groove of connecting seat, saw blade piece is firmly fixed by locking seat, when unlocking, reverse rotation worm makes lock piece separate from mounting groove, and saw blade can be removed, to reach the comprehensive effect that saw blade is quickly replaced, accurately installed and stably locked.

Description

Technical Field

[0001] This utility model relates to the field of saw blade changing technology for circular saws, specifically a quick saw blade changing and locking device for a servo circular saw. Background Technology

[0002] Circular saws are industrial equipment used for cutting metal materials. They are mainly developed by professional manufacturers. However, prolonged operation of servo circular saws can lead to wear and aging, tooth damage, reduced cutting quality, and equipment safety risks.

[0003] Currently, traditional servo circular saws often use threaded locking for quick blade changes and locking, which requires tools and results in a cumbersome replacement process and low efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a quick blade changing and locking device for a servo circular saw, thereby solving the problem mentioned in the background art that current traditional servo circular saws mostly use threaded locking for quick blade changing and locking, which requires tool assistance, resulting in a cumbersome replacement process and low replacement efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-change and locking device for a servo circular saw, comprising a body and a saw blade assembly. A connecting seat is provided on the outer surface of the body, and a positioning element is fixedly installed on the outer surface of the connecting seat. An installation groove is formed on the outer surface of the connecting seat. A positioning hole is formed on the outer surface of the saw blade assembly, which is disposed on the outer surface of the connecting seat. The positioning element is inserted into and connected to the positioning hole. A locking seat is provided on the outer surface of the saw blade assembly, and a fixing element is fixedly installed on the outer surface of the locking seat. The outer surface of the saw blade is rotatably connected to a worm gear, and the outer surface of the worm gear is meshed with a worm wheel. The worm wheel is rotatably connected to a fixed component. The outer surface of the worm wheel has a first sliding groove, and the outer surface of the first sliding groove is slidably connected to a first slider. The outer surface of the fixed component has a second sliding groove, and the outer surface of the second sliding groove is slidably connected to a second slider. The second slider is fixedly connected to the first slider. A locking component is fixedly installed on the outer surface of the second slider. The locking component engages with the mounting groove for fixation. The saw blade and the connecting seat are fixedly connected through the locking seat.

[0006] Preferably, a gas-liquid nozzle and a fixed base are fixedly installed on the outer surface of the machine body. A screw is threadedly connected to the outer surface of the fixed base. A fixed block is rotatably connected to the outer surface of the screw. A limiting component is fixedly installed on the outer surface of the fixed block. The limiting component is slidably connected to the fixed base. A cleaning plate is provided on the outer surface of the fixed block. A fixing bolt is provided on the outer surface of the cleaning plate. The fixing bolt is threadedly fixed to the fixed block. The outer surface of the cleaning plate is bonded to the outer surface of the saw blade through the screw.

[0007] Preferably, a drive mechanism and a handle are fixedly installed on the outer surface of the machine body. An on / off switch is provided on the outer surface of the handle. The on / off switch is electrically connected to the drive mechanism. The drive mechanism is electrically connected to the connecting seat. An electric push rod is embedded in the outer surface of the connecting seat. The electric push rod is electrically connected to the drive mechanism. The output end of the electric push rod is in contact with the outer surface of the saw blade away from the locking seat.

[0008] Preferably, a knob is fixedly installed at one end of the worm gear, the outer surface of the knob is provided with anti-slip texture, the first slide groove is an arc-shaped groove, the shape of the first slider is adapted to the first slide groove, and the first slide groove is arranged in a three-ring array, the outer surface of the lock is provided with anti-slip protrusions, and the inner surface of the mounting groove is provided with anti-slip grooves adapted to the anti-slip protrusions.

[0009] Preferably, the outer surface of the cleaning plate is provided with a cleaning brush, which is made of wear-resistant fiber material, and the number of the limiting members is two, which are symmetrically distributed about the vertical center line of the fixing block.

[0010] Preferably, a buffer pad is fixedly installed at the output end of the electric push rod. The buffer pad is made of elastic rubber. There are multiple positioning elements, which are arranged in a ring array on the outer surface of the connecting seat. The number of positioning holes matches the number of positioning elements and their positions correspond one-to-one.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The quick-change and locking device of this servo circular saw machine uses the positioning hole of the saw blade and the positioning part of the connecting seat to determine the precise radial and circumferential reference for saw blade installation, avoiding installation misalignment. Then, the worm on the fixed part is rotated, and the worm wheel is driven to rotate by the meshing transmission of the worm gear. The first slide groove of the worm wheel further drives the first and second slides fixed thereto, converting the rotational motion into linear motion along the second slide groove of the fixed part. Finally, when locking, the second slide moves the locking part to engage with the mounting groove of the connecting seat, and the saw blade is firmly fixed by the locking seat. When unlocking, the worm is rotated in the opposite direction to make the locking part disengage from the mounting groove, and the saw blade can be removed. Thus, the combined effect of quick saw blade replacement, precise installation and stable locking is achieved.

[0012] 2. The quick-change and locking device of this servo circular saw uses an external gas-liquid nozzle to directionally spray gas-liquid medium at the contact point between the saw blade and the material being cut. Simultaneously, the screw on the fixed base rotates, and the threaded engagement between the screw and the fixed base, along with the limiting component restricting the rotation of the fixed block, converts the rotational motion of the screw into the axial linear motion of the fixed block. This precisely adjusts the tightness of the fit between the cleaning plate on the fixed block and the saw blade, ensuring that the cleaning plate can remove residual debris and oil stains from the surface through physical friction during the rotation of the saw blade, keeping the saw blade clean. This improves the cutting quality, saw blade lifespan, and equipment maintenance efficiency of the servo circular saw, making it suitable for long-term continuous high-precision operations. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is an exploded view of the fastener structure of this utility model; Figure 4 This is a top sectional view of the structure of this utility model.

[0014] In the diagram: 1. Machine body; 2. Drive mechanism; 3. Handle; 4. Switch; 5. Connecting seat; 6. Positioning component; 7. Electric push rod; 8. Saw blade; 9. Positioning hole; 10. Mounting slot; 11. Locking seat; 12. Fixing component; 13. Worm gear; 14. Worm wheel; 15. No. 1 slide groove; 16. No. 1 slider; 17. No. 2 slide groove; 18. No. 2 slider; 19. Locking component; 20. Gas-liquid nozzle; 21. Fixing seat; 22. Screw; 23. Fixing block; 24. Limiting component; 25. Cleaning plate; 26. Fixing bolt. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1: Please refer to Figures 1-4. A quick-change and locking device for a servo circular saw includes a body 1 and a saw blade assembly 8. A connecting seat 5 is provided on the outer surface of the body 1, and a positioning element 6 is fixedly installed on the outer surface of the connecting seat 5. An installation groove 10 is formed on the outer surface of the connecting seat 5. A positioning hole 9 is formed on the outer surface of the saw blade assembly 8, which is disposed on the outer surface of the connecting seat 5. The positioning element 6 is inserted into and connected to the positioning hole 9. A locking seat 11 is provided on the outer surface of the saw blade assembly 8, and a fixing element 12 is fixedly installed on the outer surface of the locking seat 11. A worm gear 13 is rotatably connected to the outer surface of the fixing element 12. The outer surface of the saw blade is meshed with a worm gear 14, which is rotatably connected to the fixing member 12. A first groove 15 is opened on the outer surface of the worm gear 14, and a first slider 16 is slidably connected to the outer surface of the first groove 15. A second groove 17 is opened on the outer surface of the fixing member 12, and a second slider 18 is slidably connected to the outer surface of the second groove 17. The second slider 18 is fixedly connected to the first slider 16. A locking member 19 is fixedly installed on the outer surface of the second slider 18, and the locking member 19 is engaged and fixedly fixed with the mounting groove 10. The saw blade 8 and the connecting seat 5 are fixedly connected by a locking seat 11.

[0017] Specifically, the positioning hole 9 of the saw blade 8 is inserted and engaged with the positioning part 6 of the connecting seat 5 to determine the precise radial and circumferential reference for saw blade installation, avoiding installation misalignment. Then, the worm 13 on the fixing part 12 is rotated, and the worm gear 14 is rotated by the meshing transmission of the worm gear 13. The first slide groove 15 of the worm gear 14 further drives the first slider 16 and the second slider 18 fixed thereto, converting the rotational motion into linear motion along the second slide groove 17 of the fixing part 12. Finally, when locking, the second slider 18 drives the locking part 19 to engage with the mounting groove 10 of the connecting seat 5, and the saw blade 8 is firmly fixed by the locking seat 11. When unlocking, the worm 13 is rotated in the opposite direction to make the locking part 19 disengage from the mounting groove 10, and the saw blade can be removed. This achieves the comprehensive effect of quick saw blade replacement, precise installation and stable locking.

[0018] In the embodiment: a drive mechanism 2 and a handle 3 are fixedly installed on the outer surface of the body 1. A switch 4 is provided on the outer surface of the handle 3. The switch 4 is electrically connected to the drive mechanism 2. The drive mechanism 2 is electrically connected to the connecting seat 5. An electric push rod 7 is embedded in the outer surface of the connecting seat 5. The electric push rod 7 is electrically connected to the drive mechanism 2. The output end of the electric push rod 7 is in contact with the outer surface of the saw blade 8 away from the locking seat 11.

[0019] Specifically, through the electrical connection between the handle 3 and the external switch 4 and the drive mechanism 2, the "start / stop" electrical signal command transmitted by the switch 4 enables convenient control of the drive mechanism 2. This allows the operator to control the device's start and stop instantly while holding the handle 3, reducing operational complexity. The drive mechanism 2, as the core control unit, converts electrical energy into mechanical energy and stably transmits it to the connecting seat 5 through an electrical connection, providing continuous and uniform cutting power for the high-speed rotation of the saw blade 8 and preventing power fluctuations from affecting the cutting flatness. On the other hand, it transmits extension and retraction control signals to the electric push rod 7 through an electrical connection. After receiving the signal, the output end of the electric push rod 7 can extend and fit against the surface of the saw blade 8 away from the locking seat 11. This achieves linkage control of various components through electrical connection, ensuring convenient operation and stable cutting power. Furthermore, the axial support of the electric push rod 7 strengthens the saw blade's fixing reliability, ultimately further adapting to the needs of handheld operation and high-precision cutting scenarios of servo circular saws.

[0020] In this embodiment: a knob is fixedly installed at one end of the worm gear 13. The outer surface of the knob is provided with anti-slip texture. The first slide groove 15 is an arc-shaped groove. The first slider 16 is adapted to the shape of the first slide groove 15. The first slide groove 15 is arranged in three ring arrays. The outer surface of the locking member 19 is provided with anti-slip protrusions. The inner surface of the mounting groove 10 is provided with anti-slip grooves adapted to the anti-slip protrusions.

[0021] Specifically, the anti-slip texture on the outer surface of the knob increases the friction of hand contact, preventing the hand from slipping during operation, thus achieving effortless and anti-disengagement rotation of the worm gear 13. During the power transmission stage, the arc-shaped first slide groove 15 on the worm wheel disk 14, which matches the shape of the first slider 16, allows the slider to slide smoothly along the arc trajectory, preventing movement jamming. Moreover, the three slide grooves are distributed in a circular array, so that the slider is subjected to force synchronously and the movement is transmitted evenly, ensuring that the locking part 19 moves smoothly and the components are subjected to balanced force. In the locking and fixing stage, the anti-slip protrusion on the outside of the locking part 19 and the anti-slip groove in the mounting groove 10 mesh with each other, which not only restricts the relative sliding of the two through mechanical interlocking, but also multiplies the friction of the contact surface through the meshing effect, preventing the locking from loosening due to vibration when the saw blade is cutting at high speed.

[0022] In the embodiment: a buffer pad is fixedly installed at the output end of the electric push rod 7. The buffer pad is made of elastic rubber material. There are multiple positioning parts 6. The multiple positioning parts 6 are distributed in a ring array on the outer surface of the connecting seat 5. The number of positioning holes 9 is adapted to the number of positioning parts 6 and their positions correspond one-to-one.

[0023] Specifically, multiple positioning elements 6 arranged in a ring array on the outer surface of the connecting seat 5 are precisely fitted into the positioning holes 9 on the saw blade 8, which correspond one-to-one in number and position. This avoids possible offset or tilting during single-point positioning, significantly improves the coaxiality between the saw blade and the connecting seat 5, ensures that the rotation center of the saw blade is consistent with the power output center, reduces radial sway during high-speed rotation, and ensures the flatness of the cutting surface. During the high-speed cutting operation of the saw blade, the elastic rubber buffer pad fixed at the output end of the electric push rod 7 absorbs the axial vibration impact force generated by the saw blade through the elastic deformation of the rubber material. At the same time, it replaces the hard metal contact with flexible contact, which reduces the operating noise of the equipment, avoids vibration affecting the cutting accuracy, and prevents scratches or deformation on the surface of the saw blade due to friction.

[0024] Working principle: A connecting seat 5 is provided on the outer surface of the machine body 1. A positioning component 6 is fixedly installed on the outer surface of the connecting seat 5. An installation groove 10 is opened on the outer surface of the connecting seat 5. At the same time, a positioning hole 9 is opened on the outer surface of the saw blade component 8. The saw blade component 8 is set on the outer surface of the connecting seat 5. The positioning component 6 is inserted and connected to the positioning hole 9. A locking seat 11 is provided on the outer surface of the saw blade component 8. A fixing component 12 is fixedly installed on the outer surface of the locking seat 11. A worm gear 13 is rotatably connected to the outer surface of the fixing component 12. A worm gear 14 is meshed with the outer surface of rod 13. The worm gear 14 is rotatably connected to the fixing member 12. A first groove 15 is formed on the outer surface of the worm gear 14, and a first slider 16 is slidably connected to the outer surface of the first groove 15. A second groove 17 is formed on the outer surface of the fixing member 12, and a second slider 18 is slidably connected to the outer surface of the second groove 17. The second slider 18 is fixedly connected to the first slider 16. A locking member 19 is fixedly installed on the outer surface of the second slider 18. The locking member 19 is connected to... The mounting slot 10 engages and secures the saw blade 8, which is fixedly connected to the connecting seat 5 via the locking seat 11. The positioning hole 9 of the saw blade 8 and the positioning part 6 of the connecting seat 5 are inserted and engaged to determine the precise radial and circumferential reference for the installation of the saw blade, avoiding installation misalignment. Then, the worm 13 on the fixing part 12 is rotated, and the worm wheel 14 is rotated by the meshing transmission of the worm gear 13. The first slide groove 15 of the worm wheel 14 further drives the first slider 16 and the second slider 18 fixed thereto, converting the rotational motion into linear motion along the second slide groove 17 of the fixing part 12. Finally, when locking, the second slider 18 drives the locking part 19 to engage with the mounting slot 10 of the connecting seat 5, and the saw blade 8 is firmly fixed by the locking seat 11. When unlocking, the worm 13 is rotated in the opposite direction to make the locking part 19 disengage from the mounting slot 10, and the saw blade can be removed. Compared with related technologies, the quick saw blade changing and locking device for a servo circular saw provided by this utility model has the following beneficial effects: thus achieving the comprehensive effects of quick saw blade changing, precise installation and stable locking.

[0025] Example 2: Please refer to Figures 1-4. A gas-liquid nozzle 20 and a fixed base 21 are fixedly installed on the outer surface of the machine body 1. A screw 22 is threadedly connected to the outer surface of the fixed base 21. A fixed block 23 is rotatably connected to the outer surface of the screw 22. A limiting member 24 is fixedly installed on the outer surface of the fixed block 23. The limiting member 24 is slidably connected to the fixed base 21. A cleaning plate 25 is provided on the outer surface of the fixed block 23. A fixing bolt 26 is provided on the outer surface of the cleaning plate 25. The fixing bolt 26 is threadedly fixed to the fixed block 23. The outer surface of the cleaning plate 25 is attached to the outer surface of the saw blade 8 through the screw 22.

[0026] Specifically, the gas-liquid medium is directionally sprayed onto the contact point between the saw blade and the material being cut through the gas-liquid nozzle 20 outside the machine body 1. At the same time, the screw 22 on the fixed base 21 is rotated. The screw 22 and the fixed base 21 are engaged by threads, and the rotation of the fixed block 23 is restricted by the limiting component 24. The rotational motion of the screw 22 is converted into the axial linear motion of the fixed block 23. This allows for precise adjustment of the tightness of the fit between the cleaning plate 25 on the fixed block 23 and the saw blade 8. This ensures that the cleaning plate 25 can remove residual debris and oil stains from the surface through physical friction with the rotating saw blade, keeping the saw blade clean. The cleaning plate 25 is threadedly fixed to the fixed block 23 by the fixing bolt 26. The threaded detachable structure allows for quick removal of the fixing bolt 26 to replace or clean the cleaning plate 25, reducing maintenance difficulty.

[0027] In this embodiment: a cleaning brush is provided on the outer surface of the cleaning plate 25. The cleaning brush is made of wear-resistant fiber material. There are two limiting members 24, which are symmetrically distributed about the vertical center line of the fixing block 23.

[0028] Specifically, the cleaning brush on the outer surface of the cleaning plate 25 is made of wear-resistant fiber material. On the one hand, the dense structure of the fiber filaments forms sufficient physical friction with the saw blade surface, which can thoroughly wipe away the fine debris and oil residue remaining in the saw blade gaps and on the surface, preventing impurities from affecting the subsequent cutting accuracy. On the other hand, the wear-resistant material can resist the wear caused by the rotational friction of the saw blade, greatly extending the replacement cycle of the cleaning brush and reducing maintenance costs. At the same time, the two limiting members 24 symmetrically distributed about its vertical center line on the outside of the fixing block 23, through bidirectional symmetrical guiding constraints, not only jointly restrict the tendency of the fixing block 23 to rotate with the screw 22, but also balance the fixing block 23. 3. The force applied during movement prevents the fixed block 23 from shifting or jamming due to unilateral limiting, thereby ensuring that the cleaning plate 25 and cleaning brush adhere evenly to the surface of the saw blade. This avoids excessive local tightness that could increase saw blade resistance and cause excessive wear of the cleaning brush, or excessive local looseness that could create cleaning blind spots. The two work together to enhance the cleaning effect and durability of the saw blade through the wear-resistant fiber cleaning brush, while the double symmetrical limiting component 24 ensures the stability of the adjustment of the cleaning plate 25. Ultimately, this makes the saw blade cleaning process more efficient, the adhesion more uniform, and the use more durable, further adapting to the requirements of servo circular saws for cleaning consistency and long-term operational reliability.

[0029] Working Principle: A gas-liquid medium is directionally sprayed from the gas-liquid nozzle 20 outside the machine body 1 to the contact point between the saw blade and the material being cut. Utilizing the principle that the medium directly acts on the heat source and debris, it absorbs the heat generated by the high-speed cutting of the saw blade to prevent high-temperature annealing and extend its service life. Simultaneously, it promptly removes cutting debris to prevent it from adhering to the saw blade and affecting accuracy or causing wear on the equipment. At the same time, rotating the screw 22 on the fixed base 21, through the threaded engagement between the screw 22 and the fixed base 21, combined with the limiting component 24 restricting the rotation of the fixed block 23, converts the rotational motion of the screw 22 into the axial linear motion of the fixed block 23. This precisely adjusts the fit between the cleaning plate 25 on the fixed block 23 and the saw blade 8. The tightness of the cleaning plate 25 ensures that it can remove residual debris and oil stains from the surface through physical friction with the rotating saw blade, keeping the saw blade clean, without increasing the saw blade resistance or causing wear due to excessive tightness. In addition, the cleaning plate 25 is fixed to the fixing block 23 by the fixing bolt 26. The fixing bolt 26 can be quickly removed to replace or clean the cleaning plate 25 with the help of the threaded detachable structure, reducing the difficulty of maintenance. Compared with related technologies, the quick saw blade changing and locking device for servo circular saw machines provided by this utility model has the following beneficial effects: thereby improving the cutting quality of servo circular saw machines, saw blade service life and equipment operation and maintenance efficiency, and adapting to the needs of long-term continuous high-precision operation.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-change and locking device for a servo circular saw, comprising a body (1) and a saw blade assembly (8), characterized in that: The outer surface of the body (1) is provided with a connecting seat (5), and a positioning component (6) is fixedly installed on the outer surface of the connecting seat (5). An installation groove (10) is opened on the outer surface of the connecting seat (5). A positioning hole (9) is opened on the outer surface of the saw blade (8). The saw blade (8) is disposed on the outer surface of the connecting seat (5). The positioning component (6) is inserted and connected to the positioning hole (9). A locking seat (11) is provided on the outer surface of the saw blade (8). A fixing component (12) is fixedly installed on the outer surface of the locking seat (11). A worm gear (13) is rotatably connected to the outer surface of the fixing component (12). A worm wheel (14) is meshed with the outer surface of the worm gear (13). The worm gear (14) is rotatably connected to the fixing member (12). A first groove (15) is opened on the outer surface of the worm gear (14). A first slider (16) is slidably connected to the outer surface of the first groove (15). A second groove (17) is opened on the outer surface of the fixing member (12). A second slider (18) is slidably connected to the outer surface of the second groove (17). The second slider (18) is fixedly connected to the first slider (16). A locking member (19) is fixedly installed on the outer surface of the second slider (18). The locking member (19) is engaged and fixed with the mounting groove (10). The saw blade (8) and the connecting seat (5) are fixedly connected through the locking seat (11).

2. The quick blade changing and locking device for a servo circular saw machine according to claim 1, characterized in that: The outer surface of the machine body (1) is fixedly installed with a gas-liquid nozzle (20) and a fixed seat (21). The outer surface of the fixed seat (21) is threadedly connected with a screw (22). The outer surface of the screw (22) is rotatably connected with a fixed block (23). The outer surface of the fixed block (23) is fixedly installed with a limiting member (24). The limiting member (24) is slidably connected to the fixed seat (21). The outer surface of the fixed block (23) is provided with a cleaning plate (25). The outer surface of the cleaning plate (25) is provided with a fixing bolt (26). The fixing bolt (26) is threadedly fixed to the fixed block (23). The outer surface of the cleaning plate (25) is attached to the outer surface of the saw blade (8) through the screw (22).

3. The quick blade changing and locking device for a servo circular saw machine according to claim 1, characterized in that: The outer surface of the machine body (1) is fixedly installed with a drive mechanism (2) and a handle (3). The outer surface of the handle (3) is provided with a switch (4). The switch (4) is electrically connected to the drive mechanism (2). The drive mechanism (2) is electrically connected to the connecting seat (5). An electric push rod (7) is embedded in the outer surface of the connecting seat (5). The electric push rod (7) is electrically connected to the drive mechanism (2). The output end of the electric push rod (7) is in contact with the outer surface of the saw blade (8) away from the locking seat (11).

4. The quick blade changing and locking device for a servo circular saw machine according to claim 1, characterized in that: A knob is fixedly installed at one end of the worm gear (13). The outer surface of the knob is provided with anti-slip texture. The first slide groove (15) is an arc-shaped groove. The first slider (16) is adapted to the shape of the first slide groove (15). The first slide groove (15) is arranged in three ring arrays. The outer surface of the lock (19) is provided with anti-slip protrusions. The inner surface of the mounting groove (10) is provided with anti-slip grooves adapted to the anti-slip protrusions.

5. A quick-change saw blade and locking device for a servo circular saw machine according to claim 2, characterized in that: The outer surface of the cleaning plate (25) is provided with a cleaning brush, which is made of wear-resistant fiber material. There are two limiting members (24), which are symmetrically distributed about the vertical center line of the fixing block (23).

6. The quick blade changing and locking device for a servo circular saw machine according to claim 3, characterized in that: The output end of the electric push rod (7) is fixedly equipped with a buffer pad, which is made of elastic rubber material. There are multiple positioning elements (6), which are arranged in a ring array on the outer surface of the connecting seat (5). The number of positioning holes (9) is matched with the number of positioning elements (6) and their positions correspond one-to-one.

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