A precision feeding mechanism for a wood board cutting machine

Abstract

The utility model provides a kind of precision feeding mechanism for wood cutting machine, it is related to timber processing equipment technical field, including rack and be located on the servo feeding mechanism of rack, helical tooth torsion transmission unit and helical tooth driving unit, the left end of rack runs with conveying chain, the helical tooth torsion transmission unit includes fixed torsion limiter helical gear and floating torsion limiter helical gear, the fixed torsion limiter helical gear and floating torsion limiter helical gear are respectively located in the two sides of middle end of rack;The utility model is built driving system by first driving servo motor, second driving servo motor, and high-precision encoder is matched to realize dynamic compensation, and then combined with the clamping driving function of helical tooth torsion transmission unit and helical tooth driving unit, micron level feeding precision can be directly realized, the cutting plate thickness error is stably controlled within ±0.1mm, solve the drawbacks of traditional system on deviation cutting, substantially reduce wood loss.

Description

Technical Field

[0001] This utility model relates to the field of wood processing equipment technology, and in particular to a precision feeding mechanism for a wood board cutting machine. Background Technology

[0002] In the field of automated wood cutting, the feeding system, as a core component preceding the cutting process, directly determines the subsequent cutting accuracy and production efficiency. Traditional board cutting machine feeding systems mostly rely on ordinary mechanical transmission structures, such as conventional gear sets and belt drives, lacking precise dynamic compensation and synchronization control mechanisms. This results in low feeding accuracy and significant thickness errors in the cut boards. To avoid the problem of boards being unable to proceed to the next process due to thicknesses below the required specifications, companies are forced to adopt an "upper deviation" cutting mode, significantly reducing wood utilization and product yield, failing to meet the demands of high-precision processing scenarios. Meanwhile, traditional feeding systems suffer from multiple performance defects and maintenance challenges: On the one hand, the transmission structure uses ordinary spur gear sets, which have large meshing gaps and strong transmission impacts, easily causing displacement deviations. Belt drives are prone to slippage and jamming, and lack adjustment mechanisms adapted to different material characteristics. Excessive clamping leads to wood board indentations, while excessive looseness causes slippage, further exacerbating feeding errors and resulting in uneven board thickness and a high rate of non-compliance. On the other hand, belt drives are prone to getting tangled and embedded in wood chips generated during wood processing, requiring frequent machine stops for cleaning, increasing manual maintenance costs. Furthermore, the system relies on ordinary motors combined with right-angle speed mechanisms and cam linkages, resulting in a complex transmission structure, making debugging and replacement difficult, poor machine operation consistency, and requiring professional technicians for maintenance. Adjustments by ordinary personnel are difficult to unify in terms of accuracy, seriously affecting production efficiency and processing stability. Therefore, this utility model proposes a precision feeding mechanism for wood board cutting machines to solve the problems existing in the prior art. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a precision feeding mechanism for a wood board cutting machine. This precision feeding mechanism for wood board cutting machines constructs a drive system through a first drive servo motor and a second drive servo motor, and achieves dynamic compensation with a high-precision encoder. Combined with the clamping drive function of the helical gear torque transmission unit and the helical gear drive unit, this system can directly achieve micron-level feeding accuracy, stably controlling the cutting board thickness error within ±0.1mm, solving the drawbacks of deviation cutting in traditional systems, significantly reducing wood waste, and significantly improving wood board output and raw material utilization.

[0004] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a precision feeding mechanism for a wood cutting machine, including a frame and a servo feeding mechanism, a helical gear torque transmission unit and a helical gear drive unit mounted on the frame. A conveyor chain runs on the left end of the frame. The helical gear torque transmission unit includes a fixed torque limiter helical gear and a floating torque limiter helical gear, which are respectively located on both sides of the middle of the frame. The helical gear drive unit includes a fixed servo drive helical gear and a floating servo drive helical gear, which are respectively located on both sides of the right end of the frame. Both the floating torque limiter helical gear and the floating servo drive helical gear have the function of adjusting their positions. The helical gear torque transmission unit, helical gear drive unit, and conveyor chain are all driven in coordination by a servo feeding mechanism, and a cutting assembly is provided at the right end above the frame.

[0005] A further improvement is that the servo feeding mechanism includes a first drive servo motor and a second drive servo motor. The servo feeding mechanism is electrically connected to the closed-loop control system through a high-precision encoder to achieve dynamic driving and compensation.

[0006] A further improvement is made in that: a chain roller is rotatably provided at the left end of the frame, and a first ear plate is provided at the left end inside the frame. A first chain wheel is rotatably provided inside the first ear plate. A second ear plate is provided at the upper left end inside the frame, and a second chain wheel is rotatably provided on the inner side of the second ear plate. A third ear plate is provided at the middle end inside the upper part of the frame, and a drive shaft is rotatably provided on the inner side of the third ear plate. A third chain wheel is provided on the drive shaft. The conveyor chain passes around the chain roller, the first chain wheel, the second chain wheel, and the third chain wheel. The output end of the first drive servo motor is connected to the first chain wheel.

[0007] A further improvement is made in that: a first guide rail is provided on the front side of the middle section of the frame, and a first adjusting plate is movably provided on the first guide rail; the floating torque limiter helical gear is rotatably mounted on the first adjusting plate; a first fixed plate is provided on the rear side of the middle section of the frame, and the fixed torque limiter helical gear is rotatably mounted on the first fixed plate; a support plate is provided on one side of the bottom of the first adjusting plate and the first fixed plate, and a first bevel gear is rotatably mounted on the support plate; the drive shaft slides through the first bevel gear and drives the first bevel gear to rotate; a second bevel gear adapted to the first bevel gear is provided below the fixed torque limiter helical gear and the floating torque limiter helical gear; and both the fixed torque limiter helical gear and the floating torque limiter helical gear are composed of a torque limiter and a helical gear.

[0008] A further improvement is that: a second guide rail is provided on the front side of the right end of the frame, and a second adjustment plate is movably provided on the second guide rail; the floating servo drive helical gear is rotatably mounted on the second adjustment plate; a second fixed plate is provided on the rear side of the right end of the frame, and the fixed servo drive helical gear is rotatably mounted on the second fixed plate; the fixed servo drive helical gear and the floating servo drive helical gear are respectively driven to rotate by a second drive servo motor.

[0009] A further improvement is that: an adjustment seat is provided on the frame at the front position of the first adjustment plate and the second adjustment plate, and a nut is rotatably provided on the adjustment seat; a connecting block is provided on the front side of the first adjustment plate and the second adjustment plate, and a threaded rod is provided on the connecting block; the threaded rod passes through the nut and is threadedly adapted.

[0010] A further improvement is that: a mounting plate is provided on the upper part of the frame, and an upper pressure plate is rotatably provided on the bottom of the mounting plate, and a spring adjusting rod is connected between the top end of the upper pressure plate and the mounting plate.

[0011] The beneficial effects of this utility model are as follows: 1. This utility model constructs a drive system using a first drive servo motor and a second drive servo motor, and achieves dynamic compensation by combining a high-precision encoder. In addition, it combines the clamping drive function of the helical gear torque transmission unit and the helical gear drive unit to directly achieve micron-level feeding accuracy, and stably control the cutting board thickness error within ±0.1mm. This solves the drawbacks of deviation cutting in traditional systems, greatly reduces wood loss, and significantly improves the output rate of wood boards and the utilization rate of raw materials. At the same time, the torque limiter + helical gear transmission combination of the fixed torque limiter helical gear and the floating torque limiter helical gear can automatically switch the torque limiter to the idling state after the material arrives at the preset feeding position, effectively avoiding material cutting deviation caused by the continuous force of the transmission system, and further enhancing the stability of cutting accuracy.

[0012] 2. This utility model adopts a high-precision helical gear transmission structure, which significantly reduces noise and impact during gear meshing. Combined with the CAN bus synchronous control of the servo motor, it can achieve a synchronization accuracy of ±0.01mm, reducing transmission deviation at the source. At the same time, the design of a single-sided adjustable tensioning mechanism—the movement of the first and second adjusting plates—can flexibly adjust the clamping and conveying parameters according to the width and hardness of different wood boards, achieving zero slippage, zero jamming, and zero indentation conveying under all working conditions. It is perfectly adapted to the processing needs of different types and characteristics of wood boards such as pencil boards, furniture boards, and decorative boards, solving the core pain points of unstable transmission and poor material adaptability in traditional systems.

[0013] 3. This utility model uses a conveyor chain to replace the traditional belt drive, which fundamentally avoids the cleaning problems of sawdust entanglement and embedding in the transmission components, greatly reduces the frequency of maintenance and labor costs, reduces downtime caused by cleaning and maintenance, and provides a stable and continuous pre-processing guarantee for subsequent cutting processes, indirectly improving overall production efficiency. In addition, the cutting board thickness accuracy of ±0.1mm can meet the higher precision processing requirements of high-end furniture boards, precision wooden components, etc., effectively expanding the application scenarios of the equipment. Attached Figure Description

[0014] Figure 1 This is the front view of the present invention; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the floating torque limiter helical gear and the floating servo drive helical gear adjustment structure of this utility model. Figure 4 This is a top view schematic diagram of the helical gear of this utility model; Figure 5 This is a schematic diagram of the structure on the mounting plate of this utility model.

[0015] The components are as follows: 1. Frame; 2. Conveyor chain; 3. Fixed torque limiter helical gear; 4. Floating torque limiter helical gear; 5. Fixed servo drive helical gear; 6. Floating servo drive helical gear; 7. Cutting assembly; 8. First drive servo motor; 9. Second drive servo motor; 10. Chain roller; 11. First ear plate; 12. First chain wheel; 13. Second ear plate; 14. Second chain wheel; 15. Third ear plate; 16. Drive shaft; 17. Third chain wheel; 18. First guide rail; 19. First adjusting plate; 20. Support plate; 21. First bevel gear; 22. Second bevel gear; 23. Second guide rail; 24. Second adjusting plate; 25. Mounting plate; 26. Upper pressure plate; 27. Spring adjusting rod; 28. Adjusting seat; 29. ​​Connecting block; 30. Threaded rod; 31. Nut; 32. First fixing plate; 33. Second fixing plate. Detailed Implementation

[0016] To enhance understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are for illustrative purposes only and do not constitute a limitation on the scope of protection of this utility model. Example 1

[0017] according to Figure 1 , 2As shown in Figures 3, 4, and 5, this embodiment proposes a precision feeding mechanism for a wood cutting machine, including a frame 1 and a servo feeding mechanism, a helical gear torque transmission unit, and a helical gear drive unit mounted on the frame 1. A conveyor chain 2 runs on the left end of the frame 1. The helical gear torque transmission unit includes a fixed torque limiter helical gear 3 and a floating torque limiter helical gear 4, which are respectively located on both sides of the middle of the frame 1. The helical gear drive unit includes a fixed servo drive helical gear 5 and a floating servo drive helical gear 6, which are respectively located on both sides of the right end of the frame 1. Both the floating torque limiter helical gear 4 and the floating servo drive helical gear 6 have the function of adjusting their positions. The helical gear torque transmission unit, helical gear drive unit, and conveyor chain 2 are all driven collaboratively by a servo feeding mechanism. A cutter group 7 is located at the right end above the frame 1. The cooperation between the helical gear torque transmission unit and the helical gear drive unit provides a transmission foundation for high-precision feeding. The floating helical gear's adjustable design can be adapted to subsequent unilateral adjustable tensioning function to meet the conveying needs of different materials. The conveyor chain 2 replaces the traditional belt, structurally avoiding the problem of sawdust entanglement and reducing maintenance costs.

[0018] The servo feeding mechanism includes a first drive servo motor 8 and a second drive servo motor 9. The servo feeding mechanism is electrically connected to the closed-loop control system via a high-precision encoder to achieve dynamic driving and compensation. The servo motors provide dual power sources for feeding, and in conjunction with the CAN bus, they can achieve a synchronization accuracy of ±0.01mm, ensuring transmission synchronization. The high-precision encoder collects feeding position data in real time, providing a basis for dynamic compensation in the closed-loop control, and can quickly correct minute displacements caused by load changes. The combination of dynamic driving and compensation functions can meet the precise feeding requirements of 360-420 pieces per minute, adapting to high-efficiency processing scenarios.

[0019] A chain roller 10 is rotatably mounted on the left end of the frame 1, and a first ear plate 11 is mounted on the left end inside the frame 1. A first chain wheel 12 is rotatably mounted inside the first ear plate 11. A second ear plate 13 is mounted on the upper left end inside the frame 1, and a second chain wheel 14 is rotatably mounted on the inner side of the second ear plate 13. A third ear plate 15 is mounted on the middle end of the upper inside the frame 1, and a drive shaft 16 is rotatably mounted on the inner side of the third ear plate 15. A third chain wheel 17 is mounted on the drive shaft 16. The conveyor chain 2 passes around the chain roller 10, the first chain wheel 12, the second chain wheel 14, and the third chain wheel 17. The output end of the first drive servo motor 8 is connected to the first chain wheel 12. The chain roller 10 works in conjunction with multiple sets of chain wheels to provide stable support for the conveyor chain 2, ensuring that the chain does not deviate or jam during operation; the third chain wheel 17 on the drive shaft 16 can transmit power synchronously, ensuring that the linear speed of the conveyor chain 2 reaches more than 3 times the linear speed of the feeding servo, meeting the requirements for rapid feeding; the first drive servo motor 8 directly drives the first chain wheel 12, reducing power transmission loss and improving the feeding response speed.

[0020] A first guide rail 18 is provided on the front side of the upper middle section of the frame 1, and a first adjusting plate 19 is movably mounted on the first guide rail 18. The floating torque limiter helical gear 4 is rotatably mounted on the first adjusting plate 19. A first fixed plate 32 is provided on the rear side of the upper middle section of the frame 1, and the fixed torque limiter helical gear 3 is rotatably mounted on the first fixed plate 32. A support plate 20 is provided on one side of the bottom of the first adjusting plate 19 and the first fixed plate 32, and a first bevel gear 21 is rotatably mounted on the support plate 20. The drive shaft 16 slides through the first bevel gear 21 and drives the first bevel gear 21 to rotate. A second bevel gear 22 adapted to the first bevel gear 21 is provided below the fixed torque limiter helical gear 3 and the floating torque limiter helical gear 4. The fixed torque limiter helical gear 3 and the floating torque limiter helical gear 4 are both composed of a torque limiter and a helical gear. The sliding engagement between the first guide rail 18 and the first adjusting plate 19 can drive the floating torque limiter helical gear 4 to adjust its position, thereby achieving meshing pressure adjustment; the meshing transmission between the first bevel gear 21 and the second bevel gear 22 can stably transmit the power of the drive shaft 16 to the torque limiter helical gear, ensuring power transmission efficiency; the design of the drive shaft 16 sliding through the first bevel gear 21 can be adapted to the position adjustment of the first adjusting plate 19 without affecting the continuity of power transmission.

[0021] A second guide rail 23 is provided on the front right side of the frame 1, and a second adjusting plate 24 is movably mounted on the second guide rail 23. The floating servo-driven helical gear 6 is rotatably mounted on the second adjusting plate 24. A second fixed plate 33 is provided on the rear right side of the frame 1, and a fixed servo-driven helical gear 5 is rotatably mounted on the second fixed plate 33. The fixed servo-driven helical gear 5 and the floating servo-driven helical gear 6 are driven to rotate by a second drive servo motor 9, respectively. The cooperation between the second guide rail 23 and the second adjusting plate 24 provides an adjustment path for the floating servo-driven helical gear 6, allowing the gear position to be adjusted according to the material characteristics. The second fixed plate 33 provides a stable fixation for the fixed servo-driven helical gear 5, ensuring that the transmission reference does not deviate. The second drive servo motor 9 directly drives the two sets of helical gears, and the speed can be adjusted in real time through closed-loop control to achieve dynamic torque compensation and avoid asynchronous transmission.

[0022] Adjustment seats 28 are provided on the frame 1 at the front positions of the first adjustment plate 19 and the second adjustment plate 24, and nuts 31 are rotatably mounted on the adjustment seats 28. Connecting blocks 29 are provided on the front sides of the first adjustment plate 19 and the second adjustment plate 24, and threaded rods 30 are provided on the connecting blocks 29. The threaded rods 30 pass through the nuts 31 and are threadedly fitted. The adjustment seats 28 and nuts 31 provide support for the threaded rods 30. The operator can drive the threaded rods 30 to move by rotating the nuts 31, so as to achieve precise position control of the adjustment plates. The connection between the threaded rods 30 and the connecting blocks 29 can convert the threaded transmission into linear motion of the adjustment plates, with high adjustment accuracy, which can meet the parametric adjustment requirements of 0.05mm level. This structure, combined with spring buffer, can avoid sudden changes in gear meshing pressure during adjustment and protect the transmission components. Example 2

[0023] according to Figure 1 , 2 As shown in Figures 3, 4, and 5, this embodiment proposes a precision feeding mechanism for a wood cutting machine, including a frame 1 and a servo feeding mechanism, a helical gear torque transmission unit, and a helical gear drive unit mounted on the frame 1. A conveyor chain 2 runs on the left end of the frame 1. The helical gear torque transmission unit includes a fixed torque limiter helical gear 3 and a floating torque limiter helical gear 4, which are respectively located on both sides of the middle of the frame 1. The helical gear drive unit includes a fixed servo drive helical gear 5 and a floating servo drive helical gear 6, which are respectively located on both sides of the right end of the frame 1. Both the floating torque limiter helical gear 4 and the floating servo drive helical gear 6 have the function of adjusting their positions. The helical gear torque transmission unit, helical gear drive unit, and conveyor chain 2 are all driven collaboratively by a servo feeding mechanism. A cutter group 7 is located at the right end above the frame 1. The cooperation between the helical gear torque transmission unit and the helical gear drive unit provides a transmission foundation for high-precision feeding. The floating helical gear's adjustable design can be adapted to subsequent unilateral adjustable tensioning function to meet the conveying needs of different materials. The conveyor chain 2 replaces the traditional belt, structurally avoiding the problem of sawdust entanglement and reducing maintenance costs.

[0024] A mounting plate 25 is provided on the upper part of the frame 1, and an upper pressure plate 26 is rotatably mounted on the bottom of the mounting plate 25. A spring adjusting rod 27 is connected between the top end of the upper pressure plate 26 and the mounting plate 25. The mounting plate 25 provides a mounting base for the upper pressure plate 26, ensuring that the upper pressure plate 26 accurately presses the wood board. The upper pressure plate 26 can rotate slightly with the wood board being conveyed to avoid scratching the surface of the wood board, while achieving synchronous pressing to prevent the wood board from slipping. The spring adjusting rod 27 can adjust the pressing force according to the thickness of the wood board to adapt to the conveying needs of boards of different thicknesses and avoid indentations on the wood board due to excessive pressure.

[0025] The precision feeding mechanism for the wood board cutting machine uses a drive system consisting of a first drive servo motor 8 and a second drive servo motor 9, combined with a high-precision encoder for dynamic compensation. This, along with the clamping and driving functions of the helical gear torque transmission unit and the helical gear drive unit, directly achieves micron-level feeding precision, stabilizing the cutting thickness error within ±0.1mm. This solves the drawbacks of deviation cutting in traditional systems, significantly reducing wood waste and substantially improving wood board output and raw material utilization. Furthermore, the torque limiter + helical gear transmission combination of the fixed torque limiter helical gear 3 and the floating torque limiter helical gear 4 allows the torque limiter to automatically switch to idle mode after the material reaches the preset feeding position, effectively avoiding material cutting deviation caused by continuous force from the transmission system and further enhancing the stability of cutting precision. Furthermore, the high-precision sharp helical gear transmission structure significantly reduces noise and impact during gear meshing. Combined with CAN bus synchronous control of the servo motor, it achieves synchronization accuracy at the ±0.01mm level, reducing transmission deviation at its source. Simultaneously, the design of a single-sided adjustable tensioning mechanism—the movement of the first adjusting plate 19 and the second adjusting plate 24—allows for flexible adjustment of clamping and conveying parameters based on the width and hardness of different wood boards, achieving zero slippage, zero jamming, and zero indentation conveying under all working conditions. This perfectly adapts to the processing needs of different types and characteristics of wood boards, such as pencil boards, furniture boards, and decorative boards, solving the core pain points of unstable transmission and poor material adaptability in traditional systems. Finally, the use of a conveyor chain 2 instead of the traditional belt drive fundamentally avoids the cleaning problems of sawdust entanglement and embedding in transmission components, significantly reducing maintenance frequency and labor costs, minimizing downtime due to cleaning and maintenance, and providing stable and continuous pre-processing support for subsequent cutting processes, indirectly improving overall production efficiency. In addition, the cutting thickness accuracy of ±0.1mm can meet the higher precision processing requirements of high-end furniture boards and precision wooden components, effectively expanding the application scenarios of the equipment.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A precision feeding mechanism for a wood cutting machine, comprising a frame (1) and a servo feeding mechanism, a helical gear torque transmission unit, and a helical gear drive unit mounted on the frame (1), characterized in that: A conveyor chain (2) runs on the left end of the frame (1). The helical gear torque transmission unit includes a fixed torque limiter helical gear (3) and a floating torque limiter helical gear (4). The fixed torque limiter helical gear (3) and the floating torque limiter helical gear (4) are respectively located on both sides of the middle end of the frame (1). The helical gear drive unit includes a fixed servo drive helical gear (5) and a floating servo drive helical gear (6). The fixed servo drive helical gear (5) and the floating servo drive helical gear (6) are respectively located on both sides of the right end of the frame (1). The floating torque limiter helical gear (4) and the floating servo drive helical gear (6) both have the function of adjusting their positions. The helical gear torque transmission unit, the helical gear drive unit and the conveyor chain (2) are all driven in coordination by the servo feeding mechanism, and a cutter group (7) is provided on the right end above the frame (1).

2. The precision feeding mechanism for a wood cutting machine according to claim 1, characterized in that: The servo feeding mechanism includes a first drive servo motor (8) and a second drive servo motor (9). The servo feeding mechanism is electrically connected to the closed-loop control system through a high-precision encoder to achieve dynamic driving and compensation.

3. The precision feeding mechanism for a wood cutting machine according to claim 2, characterized in that: The left end of the frame (1) is provided with a chain roller (10), and the left end inside the frame (1) is provided with a first ear plate (11). The first ear plate (11) is provided with a first chain wheel (12) inside. The left end of the upper part of the frame (1) is provided with a second ear plate (13), and the inner side of the second ear plate (13) is provided with a second chain wheel (14). The middle part of the upper part of the frame (1) is provided with a third ear plate (15), and the inner side of the third ear plate (15) is provided with a drive shaft (16). The drive shaft (16) is provided with a third chain wheel (17). The conveying chain (2) passes around the chain roller (10), the first chain wheel (12), the second chain wheel (14) and the third chain wheel (17). The output end of the first drive servo motor (8) is connected to the first chain wheel (12).

4. The precision feeding mechanism for a wood cutting machine according to claim 3, characterized in that: The frame (1) is provided with a first guide rail (18) on the front side of the upper middle section, and a first adjusting plate (19) is movably provided on the first guide rail (18). The floating torque limiter helical gear (4) is rotatably provided on the first adjusting plate (19). The frame (1) is provided with a first fixed plate (32) on the rear side of the upper middle section, and the fixed torque limiter helical gear (3) is rotatably provided on the first fixed plate (32). The bottom side of the first adjusting plate (19) and the first fixed plate (32) are both provided with a support plate (20), and a first bevel gear (21) is rotatably provided on the support plate (20). The drive shaft (16) slides through the first bevel gear (21) and drives the first bevel gear (21) to rotate. The fixed torque limiter helical gear (3) and the floating torque limiter helical gear (4) are both provided with a second bevel gear (22) that is compatible with the first bevel gear (21). The fixed torque limiter helical gear (3) and the floating torque limiter helical gear (4) are both composed of a torque limiter and a helical gear.

5. A precision feeding mechanism for a wood cutting machine according to claim 4, characterized in that: The frame (1) is provided with a second guide rail (23) on the front right side, and a second adjustment plate (24) is movably provided on the second guide rail (23). The floating servo drive helical gear (6) is rotatably mounted on the second adjustment plate (24). The frame (1) is provided with a second fixed plate (33) on the rear right side, and the fixed servo drive helical gear (5) is rotatably mounted on the second fixed plate (33). The fixed servo drive helical gear (5) and the floating servo drive helical gear (6) are driven to rotate by the second drive servo motor (9) respectively.

6. A precision feeding mechanism for a wood cutting machine according to claim 5, characterized in that: An adjustment seat (28) is provided on the frame (1) at the front position of the first adjustment plate (19) and the second adjustment plate (24), and a nut (31) is rotatably provided on the adjustment seat (28). A connecting block (29) is provided on the front side of the first adjustment plate (19) and the second adjustment plate (24), and a threaded rod (30) is provided on the connecting block (29). The threaded rod (30) passes through the nut (31) and is threadedly adapted.

7. A precision feeding mechanism for a wood cutting machine according to claim 1, characterized in that: The frame (1) is provided with an upper mounting plate (25), and an upper pressure plate (26) is rotatably provided at the bottom of the mounting plate (25). A spring adjusting rod (27) is connected between one end of the top of the upper pressure plate (26) and the mounting plate (25).

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