A circular saw cutting device for cutting furniture boards

Abstract

The present application relates to the technical field of circular saw cutting, and discloses a furniture plate cutting circular saw cutting device, which comprises a circular saw cutting mechanism and a flexible linkage mechanism, and the structure comprises a No.1 rotating disc capable of rotating with a rotor of a driving motor, a No.2 rotating disc rotating with the No.1 rotating disc through a separable hemisphere, a spiral spring forming a pre-tightening force against the No.1 rotating disc and the No.2 rotating disc, and three flexible tracks enabling a circular saw blade to rotate with the No.2 rotating disc. The furniture plate cutting circular saw cutting device flexibly connects the driving motor and the circular saw blade, which can not only reduce the negative influence of the vibration of the circular saw blade on the driving motor, but also enable the circular saw blade to have an adjustable cutting depth. In addition, the flexible connection is in the form of flexible track winding, which can generate axial dislocation movement when the cutting resistance is overloaded, so as to interrupt the transmission of the driving motor and improve the protection function of the driving motor.

Description

Technical Field

[0001] This invention relates to the field of circular saw cutting technology, specifically to a circular saw cutting device for cutting furniture panels. Background Technology

[0002] The existing circular saw cutting device for furniture board cutting mainly consists of a saw body, a drive motor, and a circular saw blade. The drive motor and the circular saw blade are rigidly connected. When the circular saw blade cuts the furniture board, the teeth of the circular saw blade constantly collide with the board. This phenomenon causes the circular saw blade to generate slight vibrations on the motor rotor. This vibration reduces the effective service life of the drive motor. At the same time, the rigid connection can cause the drive motor to stop when the circular saw blade jams due to operational errors, which may lead to damage to the drive motor. Therefore, its overall service life is relatively low. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a circular saw cutting device for furniture board cutting. By flexibly connecting the drive motor and the circular saw blade, it can reduce the negative impact of circular saw blade vibration on the drive motor and provide a basis for adjusting the cutting depth of the circular saw blade. In addition, the flexible connection is a flexible track winding method, which can cause axial misalignment when the cutting resistance is overloaded, thereby interrupting the transmission of the drive motor and improving the protection function of the drive motor, thus solving the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a circular saw cutting device for cutting furniture boards, comprising a circular saw cutting mechanism, the structure of which includes a saw bed for placing the board and being in a horizontal state, a drive motor fixedly installed below one side of the saw bed, and a circular saw blade that indirectly rotates with the drive motor and is capable of cutting the furniture board located on the upper surface of the saw bed; and a flexible linkage mechanism, the structure of which includes a first rotating disk that can rotate with the rotor of the drive motor, a second rotating disk that rotates with the first rotating disk via a separable hemisphere, a helical spring that forms a preload force against the first rotating disk and the second rotating disk, and three flexible tracks that cause the circular saw blade to rotate with the second rotating disk.

[0005] Preferably, the circular sawing mechanism further includes support legs fixedly installed at the four corners of the bottom of the saw. The left and right sides of the saw are respectively equipped with outwardly extending left and right fixed ears. The saw has a cutting groove with open ends on the plate near the right fixed ear. A horizontal drive motor is fixedly installed at the bottom of the left fixed ear through a motor mounting seat. The circular saw blade extends from the bottom to the top of the blade from the cutting groove. A curved connecting rod is installed inside the end of the circular saw blade facing the right fixed ear through a bearing.

[0006] Preferably, the rotation axis of the drive motor and the rotation axis of the circular saw blade are on the same vertical plane.

[0007] Preferably, the flexible linkage mechanism further includes a hollow rotating shaft, a third rotating disk, and a fourth rotating disk. One end of the hollow rotating shaft is provided with a rotor fixing groove with an inwardly recessed structure. The rotor end of the drive motor is fixedly installed in the rotor fixing groove. The hollow rotating shaft has a component movable cavity inside. The other end of the hollow rotating shaft is provided with a rod through hole connecting the external space and one end of the component movable cavity. A first rotating disk with an integral structure is provided at the other end of the hollow rotating shaft and the component movable cavity. The first rotating disk has multiple hemispherical grooves with an inwardly recessed structure arranged in a ring array on the end face facing the rod through hole. A second rotating disk that can move along the axial direction of the component movable cavity is provided on the periphery of one end of the first rotating disk. A multiple grooves with an inwardly recessed structure are provided on one end face of the second rotating disk. The hemisphere, with an integrated structure, can be inserted into a hemispherical groove. A telescopic movable rod is fixedly installed at the end of the second rotating disk facing the through-hole of the rod. A compressed helical spring is sleeved around the rod located inside the movable cavity of the component. The initial elastic damping strength of the helical spring on the second rotating disk is greater than the rotational resistance that the circular saw blade needs to overcome when cutting furniture panels. A third rotating disk is fixedly installed at the end of the helical spring located outside the hollow rotating shaft via a first docking plate. Three flexible tracks in a circular array are installed at opposite ends of the third and fourth rotating disks. A second docking plate is fixedly installed at one end of the fourth rotating disk, and the second docking plate is fixedly connected to one rotating end of the circular saw blade.

[0008] Preferably, the structural radius of the hemisphere is adapted to the structural radius of the hemispherical groove, and the depth of the hemispherical groove is less than the structural radius of the hemisphere.

[0009] Preferably, the distance between the third and fourth rotating disks in the initial state is less than the length of the flexible track.

[0010] Preferably, it also includes a cutting depth adjustment mechanism, the structure of which includes a first external thread rod and a second external thread rod fixedly connected to the bottom end of the curved connecting rod and the bottom surface of the right fixed lug, a longitudinal threaded sleeve capable of changing the distance between the first external thread rod and the second external thread rod, and a polygonal limiting rod capable of preventing relative rotation between the first external thread rod and the second external thread rod.

[0011] Preferably, the cutting depth adjustment mechanism includes a longitudinal threaded sleeve, a first external threaded rod, and a second external threaded rod. One end of the longitudinal threaded sleeve is provided with a first internal threaded cavity with a concave structure, and the other end of the longitudinal threaded sleeve is provided with a second internal threaded cavity with a concave structure. The rod body of the first external threaded rod is installed inside the first internal threaded cavity through the first thread structure, and the rod body of the second external threaded rod is installed inside the second internal threaded cavity through the second thread structure. The first and second external threaded rods are provided with polygonal limiting cavities with concave structures at their opposite ends. A polygonal limiting rod inserted into the polygonal limiting cavity is fixedly installed at the center of the longitudinal threaded sleeve. One end of the first external threaded rod is provided with a first connecting plate integrally formed with it and fixedly connected to the bottom end of the curved connecting rod. One end of the second external threaded rod is provided with a second connecting plate integrally formed with it and fixedly connected to the bottom surface of the right fixed lug.

[0012] Preferably, the cross-sectional shape of the polygonal limiting cavity is consistent with the cross-sectional shape of the polygonal limiting rod, both being polygonal structures, and the structural dimensions of the cross-sectional shape of the polygonal limiting cavity match the structural dimensions of the cross-sectional shape of the polygonal limiting rod.

[0013] Preferably, the first thread structure includes an internal thread structure disposed inside the first internal thread cavity and an external thread structure disposed on the first external thread rod body, and the second thread structure includes an internal thread structure disposed inside the second internal thread cavity and an external thread structure disposed on the second external thread rod body, and the helical direction of the first thread structure is opposite to the helical direction of the second thread structure.

[0014] Compared with the prior art, the present invention provides a circular saw cutting device for cutting furniture panels, which has the following advantages: 1. The transmission path uses a flexible track instead of a rigid shaft connection, which can effectively absorb and block the vibration generated during circular saw blade cutting, prevent the vibration from being directly transmitted to the drive motor rotor, reduce motor wear, extend service life, and thus have the function of shock absorption and machine protection.

[0015] 2. The flexible track has axial and radial deformation space, which allows the circular saw blade to float up and down within a certain range, providing a structural basis for the cutting depth adjustment mechanism, meeting the cutting needs of plates of different thicknesses, and thus having the function of adapting to depth adjustment.

[0016] 3. Rotary disks No. 1 and No. 2 are connected by a hemisphere and a hemispherical groove, and are provided with preload by a helical spring. When the cutting resistance exceeds the set threshold, the hemisphere overcomes the spring pressure and disengages from the hemispherical groove, and the transmission is interrupted momentarily to prevent the motor from stalling and burning out. This achieves active protection for the drive motor and thus has an overload automatic transmission disconnection protection function. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the present invention; Figure 3 This is a perspective view of the circular sawing mechanism in this invention; Figure 4 This is a three-dimensional cross-sectional view of the circular sawing mechanism in this invention; Figure 5 This is a perspective view of the flexible linkage mechanism in this invention; Figure 6 This is a three-dimensional cross-sectional view of the flexible linkage mechanism in this invention; Figure 7 This is a perspective view of the combination of the second rotating disk and the hemisphere in this invention; Figure 8 This is a perspective view of the cutting depth adjustment mechanism in this invention; Figure 9 This is a three-dimensional cross-sectional view of the cutting depth adjustment mechanism in this invention.

[0018] The components include: 1. Circular sawing mechanism; 11. Sawing machine; 12. Support leg; 13. Left fixed ear; 14. Right fixed ear; 15. Motor mounting base; 16. Drive motor; 17. Circular saw blade; 18. Cutting groove; 19. Curved connecting rod; 2. Flexible linkage mechanism; 21. Hollow rotating shaft; 22. Rotor fixing groove; 23. Component movable cavity; 24. Rod body through hole; 25. First rotating disk; 26. Second rotating disk; 27. Hemispherical groove; 28. Hemisphere; 29. ​​Helical spring; 210. Telescopic movable mechanism. 211. Rod; 212. Rotary disk No. 3; 213. Rotary disk No. 4; 214. Flexible track; 215. No. 1 docking plate; 216. No. 2 docking plate; 3. Cutting depth adjustment mechanism; 31. Longitudinal threaded sleeve; 32. No. 1 internal threaded cavity; 33. No. 2 internal threaded cavity; 34. No. 1 threaded structure; 35. No. 2 threaded structure; 36. No. 1 external threaded rod; 37. No. 2 external threaded rod; 38. No. 1 connecting plate; 39. No. 2 connecting plate; 310. Polygonal limiting cavity; 311. Polygonal limiting rod. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1 and Figure 2A circular saw cutting device for cutting furniture boards requires the saw 11 to be placed horizontally on the ground.

[0021] To achieve push-cut cutting of furniture panels, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 4 A circular sawing mechanism 1 needs to be set up. Its structure includes a saw 11 for placing the board and in a horizontal position, a drive motor 16 fixedly installed below one side of the saw 11, and a circular saw blade 17 that rotates indirectly with the drive motor 16 and can cut the furniture board located on the upper surface of the saw 11. When working, the drive motor 16 is started, and its rotor drives the first rotating disk 25 to rotate via the hollow rotating shaft 21. The first rotating disk 25 drives the second rotating disk 26 to rotate synchronously via the hemisphere 28. The second rotating disk 26 then drives the third rotating disk 211 to rotate. The third rotating disk 211 drives three flexible tracks 213 to form a winding linkage, which in turn drives the fourth rotating disk 212 and the circular saw blade 17 to rotate at high speed. At this time, the furniture board to be cut is pushed according to the process, and a stable push-type cutting can be completed.

[0022] For details regarding the specific structure of the circular sawing mechanism 1, please refer to [link / reference]. Figure 3 and Figure 4 The mechanism uses a saw 11 as its mounting base, with support legs 12 fixedly installed at the four corners of the bottom of the saw 11 to keep the saw 11 horizontally and stably positioned, providing a flat reference for cutting the board. A left fixed lug 13 and a right fixed lug 14 are integrally extended from the left and right sides of the saw 11, respectively, forming a symmetrical load-bearing structure. A cutting groove 18, open at both ends and running along the cutting direction, is provided in the board area of ​​the saw 11 near the right fixed lug 14, providing clearance for the extension and cutting movement of the circular saw blade 17.

[0023] The bottom of the left fixed ear 13 is fixedly mounted with a horizontally arranged drive motor 16 via a dedicated motor mounting bracket 15, ensuring the installation rigidity and coaxiality of the motor during operation. The circular saw blade 17 passes through the cutting groove 18 from bottom to top, with its portion near the top extending out of the upper surface of the sawing machine 11, achieving effective cutting of the board. The end of the circular saw blade 17 facing the right fixed ear 14 is rotatably connected to the curved connecting rod 19 via a bearing, allowing the circular saw blade 17 to be adjusted in height and angle within a certain range while maintaining smooth rotation. The rotation axis of the drive motor 16 and the rotation axis of the circular saw blade 17 are located in the same vertical plane, ensuring a stable transmission path and balanced force.

[0024] To achieve flexible linkage and overload prevention control functions, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 A flexible linkage mechanism 2 needs to be set up. Its structure includes a first rotating disk 25 that can rotate with the rotor of the drive motor 16, a second rotating disk 26 that rotates with the first rotating disk 25 via a separable hemisphere 28, a helical spring 29 that forms a pre-tensioning force against the first rotating disk 25 and the second rotating disk 26, and three flexible tracks 213 that make the circular saw blade 17 rotate with the second rotating disk 26. During operation, the flexible connection characteristics of the flexible tracks 213 can provide a small vertical floating margin for the circular saw blade 17, providing a structural basis for adjusting the cutting depth. At the same time, the flexible tracks 213 can effectively absorb and attenuate the vibration generated by cutting, block the transmission of vibration to the drive motor 16, and reduce the impact and wear of vibration on the motor. When the cutting resistance exceeds the set threshold and is greater than the engagement preload torque provided by the helical spring 29, the hemisphere 28 overcomes the spring pressure and disengages from the hemispherical groove 27, causing the first rotating disk 25 and the second rotating disk 26 to be axially misaligned and the transmission engagement to be released. The drive motor 16 keeps idling and the circular saw blade 17 stops rotating, realizing a momentary interruption of transmission, thereby avoiding the drive motor 16 from being blocked or burned out due to overload, achieving a reliable overload protection effect.

[0025] For details regarding the specific structure of the flexible linkage mechanism 2, please refer to [link / reference]. Figure 5 , Figure 6 and Figure 7The mechanism incorporates a hollow rotating shaft 21, a third rotating disk 211, and a fourth rotating disk 212 at its core transmission component, forming a multi-stage flexible transmission system. One end of the hollow rotating shaft 21 has a concave rotor fixing groove 22 for secure assembly with the rotor end of the drive motor 16, ensuring stable and reliable power input. The hollow rotating shaft 21 also has a component movable cavity 23, providing movement space for the internal telescopic and clutch components. The other end has a rod through-hole 24, connecting the component movable cavity 23 to the external environment and providing a through-channel and axial guide for the telescopic movable rod 210. A first rotating disk 25 is integrally formed at the distal end of the component movable cavity 23 on the hollow rotating shaft 21. On the end face of the first rotating disk 25 facing the rod through-hole 24, multiple sets of concave hemispherical grooves 27 arranged in a circular array serve as positioning bases for clutch engagement. A second rotating disk 26, which can move axially along the movable cavity 23 of the component, is fitted on the outer side of the first rotating disk 25. Multiple hemispheres 28 are integrally formed on the corresponding end face of the second rotating disk 26. The hemispheres 28 can be embedded in hemispherical grooves 27 to achieve torque transmission. The radii of the two are mutually compatible, and the depth of the hemispherical grooves 27 is less than the radius of the hemispheres 28, ensuring smooth separation without jamming during engagement and disengagement. A telescopic movable rod 210 is fixedly connected to the side of the second rotating disk 26 facing the rod through hole 24. The telescopic movable rod 210 extends outward through the rod through hole 24. A pre-compressed helical spring 29 is fitted on the telescopic movable rod 210 located inside the movable cavity 23. The spring applies a continuous axial preload to the second rotating disk 26, and the elastic damping corresponding to this preload is greater than the rotational resistance required for the circular saw blade 17 to normally cut the plate, ensuring stable power transmission and preventing slippage under normal working conditions. The telescopic rod 210 extends from one end of the hollow rotating shaft 21 and is fixedly connected to the third rotating disk 211 via the first docking plate 214. Three flexible tracks 213 arranged in a circular array are installed between the opposite end faces of the third rotating disk 211 and the fourth rotating disk 212 to achieve non-rigid torque transmission. The other end of the fourth rotating disk 212 is fixedly connected to the rotating end of the circular saw blade 17 via the second docking plate 215, ultimately transmitting power to the cutting execution component. Simultaneously, the initial spacing between the third rotating disk 211 and the fourth rotating disk 212 is less than the length of the flexible tracks 213, allowing the tracks to be in a naturally relaxed state, providing sufficient margin for axial misalignment, depth adjustment, and shock absorption.

[0026] To enable the adjustment of the cutting depth, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 8 and Figure 9A cutting depth adjustment mechanism 3 needs to be set up. Its structure includes a first external thread rod 36 and a second external thread rod 37 fixedly connected to the bottom end of the curved connecting rod 19 and the bottom surface of the right fixed ear 14; a longitudinal threaded sleeve 31 that can change the distance between the first external thread rod 36 and the second external thread rod 37; and a polygonal limiting rod 311 that can prevent the first external thread rod 36 and the second external thread rod 37 from rotating relative to each other. During operation, the longitudinal threaded sleeve 31 is rotated in the forward or reverse direction. By using the threaded engagement structure with opposite rotation directions at both ends of the sleeve, and with the anti-rotation constraint of the polygonal limiting rod 311, the first external thread rod 36 and the second external thread rod 37 can move closer or further away from each other axially. This changes the longitudinal distance between the curved connecting rod 19 and the right fixed ear 14, drives the circular saw blade 17 to rise and fall, and finally completes the continuous and stable adjustment of the cutting depth.

[0027] For details regarding the specific structure of the cutting depth adjustment mechanism 3, please refer to [link / reference]. Figure 8 and Figure 9 The mechanism mainly consists of a longitudinal threaded sleeve 31, a first external threaded rod 36, and a second external threaded rod 37, forming the core adjustment component to achieve stable and adjustable cutting height of the circular saw blade. The longitudinal threaded sleeve 31 is a bidirectional internal threaded sleeve structure, with concave first internal threaded cavities 32 and second internal threaded cavities 33 at both ends. These two cavities are used to accommodate and connect the corresponding external threaded rods. The first external threaded rod 36 forms a threaded engagement with the first internal threaded cavity 32 through a first threaded structure 34, and the second external threaded rod 37 forms a threaded engagement with the second internal threaded cavity 33 through a second threaded structure 35. The helical directions of the first threaded structure 34 and the second threaded structure 35 are opposite, so that when the longitudinal threaded sleeve 31 rotates in one direction, it can drive the two threaded rods to move synchronously in opposite directions, achieving rapid extension and retraction adjustment. Both the No. 1 external threaded rod 36 and the No. 2 external threaded rod 37 have concave polygonal limiting cavities 310 at their opposite ends. A polygonal limiting rod 311 is fixedly installed at the center of the longitudinal threaded sleeve 31, extending into the polygonal limiting cavity 310 and forming a clearance fit. The polygonal limiting cavity 310 and the polygonal limiting rod 311 have the same cross-sectional shape and matched dimensions, which can effectively restrict the two threaded rods from rotating circumferentially with the sleeve, ensuring that only axial linear movement is performed during thread adjustment. The end of the No. 1 external threaded rod 36 is provided with an integrated No. 1 connecting plate 38 for fixed connection to the bottom end of the curved connecting rod 19; the end of the No. 2 external threaded rod 37 is provided with an integrated No. 2 connecting plate 39 for fixed connection to the bottom surface of the right fixed lug 14, so that the overall adjustment mechanism forms a rigid connection stable support system, ensuring that the structure does not loosen and the displacement is accurate during the adjustment process.

[0028] In use, the saw 11 is placed horizontally on the ground. The longitudinal threaded sleeve 31 is rotated in a directional manner. Due to the reversed thread structure and the action of the polygonal limiting rod 311, the distance between the first external threaded rod 36 and the second external threaded rod 37 changes, thereby controlling the longitudinal distance between the curved connecting rod 19 and the right fixed lug 14. Finally, this changes the cutting depth of the circular saw blade 17. The drive motor 16 is then turned on, and its rotor drives the first rotating disk 25 to rotate via the hollow rotating shaft 21. Then, it drives the second rotating disk 26 to rotate via the hemisphere 28. The second rotating disk 26 then drives the third rotating disk 211 to rotate. The third rotating disk 211 causes the three flexible tracks 213 to intertwine, ultimately driving the fourth rotating disk 212 and the circular saw blade 17 to rotate rapidly. At this point, the… The furniture board can be cut according to the cutting process. During the cutting process, due to the flexible linkage of the three flexible tracks 213, the circular saw blade 17 can be adjusted slightly up and down, thereby realizing the function of adjusting the cutting depth. During the linkage process, the vibration of the circular saw blade 17 is weakened by the flexible tracks 213 to reduce the negative impact of vibration on the drive motor 16. Furthermore, during the linkage process, once the cutting resistance of the circular saw blade 17 on the furniture board is greater than the torsional strength formed by the helical spring 29, the helical spring 29 is compressed, and the hemisphere 28 will disengage from the hemispherical groove 27, so that the first rotating disk 25 and the second rotating disk 26 are in a relative rotational relationship. That is, the first rotating disk 25 is in a stationary state, while the second rotating disk 26 is in a state of rotation with the drive motor 16, thereby preventing the drive motor 16 from being damaged due to overload.

[0029] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circular saw cutting device for cutting furniture panels, characterized in that: include, The circular sawing mechanism (1) includes a saw (11) for placing the board and being in a horizontal position, a drive motor (16) fixedly installed below one side of the saw (11), and a circular saw blade (17) that rotates indirectly with the drive motor (16) and is capable of cutting the furniture board located on the upper surface of the saw (11). And a flexible linkage mechanism (2), the structure of which includes a first rotating disk (25) that can rotate with the rotor of the drive motor (16), a second rotating disk (26) that rotates with the first rotating disk (25) via a separable hemisphere (28), a helical spring (29) that forms a preload force against the first rotating disk (25) and the second rotating disk (26), and three flexible tracks (213) that cause the circular saw blade (17) to rotate with the second rotating disk (26).

2. The circular saw cutting device for cutting furniture panels according to claim 1, characterized in that: The circular sawing mechanism (1) also includes support legs (12) fixedly installed at the four corners of the bottom of the saw (11). The left and right sides of the saw (11) are respectively equipped with outwardly extending left fixed ears (13) and right fixed ears (14). The saw (11) has a cutting groove (18) with open ends on the plate near the right fixed ear (14). The bottom of the left fixed ear (13) is fixedly installed with a horizontal drive motor (16) through a motor mounting seat (15). The circular saw blade (17) extends from the cutting groove (18) from bottom to top near its top. The circular saw blade (17) has a curved connecting rod (19) installed inside the end facing the right fixed ear (14) through a bearing.

3. The circular saw cutting device for cutting furniture panels according to claim 2, characterized in that: The rotation axis of the drive motor (16) and the rotation axis of the circular saw blade (17) are on the same vertical plane.

4. The circular saw cutting device for cutting furniture panels according to claim 3, characterized in that: The flexible linkage mechanism (2) also includes a hollow rotating shaft (21), a third rotating disk (211), and a fourth rotating disk (212). One end of the hollow rotating shaft (21) is provided with a rotor fixing groove (22) with an inwardly recessed structure. The rotor end of the drive motor (16) is fixedly installed in the rotor fixing groove (22). The hollow rotating shaft (21) has a component movable cavity (23) inside. The other end of the hollow rotating shaft (21) is provided with a rod through hole (24) connecting the external space and one end of the component movable cavity (23). The hollow rotating shaft (21) has a first rotating disk (25) integrally formed with it at the other end of the component movable cavity (23). The first rotating disk (25) has multiple hemispherical grooves (27) arranged in a ring array and having an inward concave structure on the end face facing the rod through hole (24). A second rotating disk (26) capable of moving along the axial direction of the component movable cavity (23) is provided on the periphery of one end of the first rotating disk (25). The end face of the second rotating disk (26) has multiple hemispherical grooves (27) integrally formed with it and capable of moving along the axial direction of the component movable cavity (23). A hemisphere (28) is inserted into the hemispherical groove (27). The second rotating disk (26) has a telescopic movable rod (210) fixedly installed at the end facing the rod through the through hole (24). A compressed helical spring (29) is sleeved around the rod body inside the movable cavity (23) of the component. The initial elastic damping strength of the helical spring (29) on the second rotating disk (26) is greater than that of the circular saw blade (17) when cutting furniture panels. To overcome the rotational resistance, the helical spring (210) has a third rotating disk (211) fixedly installed at one end outside the hollow rotating shaft (21) via a first docking plate (214). The third rotating disk (211) and the fourth rotating disk (212) have three flexible tracks (213) arranged in a ring array at their opposite ends. A second docking plate (215) is fixedly installed at one end of the fourth rotating disk (212). The second docking plate (215) is fixedly connected to one rotating end of the circular saw blade (17).

5. A circular saw cutting device for cutting furniture panels according to claim 4, characterized in that: The structural radius of the hemisphere (28) is adapted to the structural radius of the hemispherical groove (27), and the depth of the hemispherical groove (27) is less than the structural radius of the hemisphere (28).

6. The circular saw cutting device for cutting furniture panels according to claim 5, characterized in that: The distance between the third rotating disk (211) and the fourth rotating disk (212) in the initial state is less than the length of the flexible track (213).

7. A circular saw cutting device for cutting furniture panels according to any one of claims 2-6, characterized in that: It also includes a cutting depth adjustment mechanism (3), the structure of which includes a first external thread rod (36) and a second external thread rod (37) fixedly connected to the bottom end of the curved connecting rod (19) and the bottom surface of the right fixed ear (14), a longitudinal threaded sleeve (31) that can change the distance between the first external thread rod (36) and the second external thread rod (37), and a polygonal limiting rod (311) that can prevent the first external thread rod (36) and the second external thread rod (37) from rotating relative to each other.

8. A circular saw cutting device for cutting furniture panels according to claim 7, characterized in that: The cutting depth adjustment mechanism (3) includes a longitudinal threaded sleeve (31), a first external threaded rod (36), and a second external threaded rod (37). One end of the longitudinal threaded sleeve (31) is provided with a first internal threaded cavity (32) with an inwardly recessed structure, and the other end of the longitudinal threaded sleeve (31) is provided with a second internal threaded cavity (33) with an inwardly recessed structure. The rod of the first external threaded rod (36) is installed inside the first internal threaded cavity (32) through a first threaded structure (34), and the rod of the second external threaded rod (37) is installed in the second internal threaded cavity (33) through a second threaded structure (35). Inside, the No. 1 external thread rod (36) and the No. 2 external thread rod (37) are provided with a concave polygonal limiting cavity (310) at their opposite ends. A polygonal limiting rod (311) inserted into the polygonal limiting cavity (310) is fixedly installed at the center of the longitudinal threaded sleeve (31). One end of the No. 1 external thread rod (36) is provided with a No. 1 connecting plate (38) which is integral with it and fixedly connected to the bottom end of the curved connecting rod (19). One end of the No. 2 external thread rod (37) is provided with a No. 2 connecting plate (39) which is integral with it and fixedly connected to the bottom surface of the right fixed ear (14).

9. A circular saw cutting device for cutting furniture panels according to claim 8, characterized in that: The cross-sectional shape of the polygonal limiting cavity (310) is consistent with the cross-sectional shape of the polygonal limiting rod (311), both being polygonal structures, and the structural dimensions of the cross-section of the polygonal limiting cavity (310) match the structural dimensions of the cross-section of the polygonal limiting rod (311).

10. A circular saw cutting device for cutting furniture panels according to claim 9, characterized in that: The first thread structure (34) includes an internal thread structure disposed inside the first internal thread cavity (32) and an external thread structure disposed on the first external thread rod (36). The second thread structure (35) includes an internal thread structure disposed inside the second internal thread cavity (33) and an external thread structure disposed on the second external thread rod (37). The helical direction of the first thread structure (34) is opposite to the helical direction of the second thread structure (35).

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