Multi-shaft sawing machine capable of self-adaptive active vibration reduction

Abstract

The invention relates to the field of sawing machines, and discloses a multi-shaft sawing machine capable of self-adaptive active vibration reduction. An active damping mechanism; the driving damping mechanism is arranged on the rear side of the sawing machine frame, sawing vibration is transmitted to the vibration transmission rod through the push-pull frame and the limiting cross rod in sequence through the arranged driving damping mechanism, the transmission sliding block is driven to do up-down reciprocating motion, linear motion of the sliding block is converted into rotary motion of the transmission disc through cooperation of the first swing arm and the second swing arm, and therefore the sawing machine is driven to rotate. The transmission shaft drives the transmission lead screw to rotate through the transmission belt and the bevel gear set, the lifting driving ring converts rotary motion into linear motion, then the pressing column is driven to compress or release the damping spring, vibration energy is converted into spring damping force through mechanical linkage, and the more violent vibration is, the larger the generated damping force is. Force for resisting vibration is actively generated according to working conditions to eliminate violent vibration generated when the sawing machine cuts hard materials or operates at a high speed, and therefore the flatness and the size precision of a cut section are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of sawing machines, and more particularly to a multi-axis sawing machine with adaptive active vibration reduction. Background Technology

[0002] In the field of modern machining, the saw is an important cutting device widely used in the blanking of metal materials (such as steel and aluminum) and some non-metallic materials. In particular, multi-axis saws, because they can cut multiple workpieces simultaneously or separately at multiple angles and positions, significantly improve production efficiency and processing flexibility, playing an indispensable role in industrial sectors such as automobile manufacturing, aerospace, mold processing, construction machinery, and large steel structures.

[0003] According to Chinese Patent Publication No. CN102672761A, a woodworking machine is disclosed, providing a fully automatic double-sided upper and lower shaft multi-blade woodworking saw that can process various specifications of boards according to actual needs. It includes a bed, left and right spindle boxes respectively located on both longitudinal sides of the bed and capable of sliding along the longitudinal direction of the bed, and left and right saw shaft assemblies rotatably mounted on the left and right spindle boxes. Each left and right saw shaft assembly includes an upper saw shaft and a lower saw shaft. The upper and lower saw shafts are respectively installed at the upper and lower positions of the left and right spindle boxes. Each independent upper and lower saw shaft is equipped with an equal number of saw blade groups. Each saw blade group includes a first saw blade, a second saw blade, and a combination saw blade. The upper and lower saw shafts... The saw is equipped with spacing adjustment devices for adjusting the distance between the first saw blade and the second saw blade, as well as between the second saw blade and the combined saw blade. However, this saw still has shortcomings. This saw, and most existing saws, usually use passive damping methods such as ordinary rubber pads or hydraulic cylinders with fixed damping. The stiffness coefficient of these damping mechanisms is usually fixed and cannot be adjusted in real time according to the magnitude and frequency of vibration during actual cutting. When the saw is cutting violently (with large vibration amplitude), the fixed damping is often insufficient, resulting in large equipment shaking and affecting processing accuracy. On the other hand, under light load cutting, excessive damping may lead to sluggish damping response and fail to achieve the best protection effect. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a multi-axis saw with adaptive active vibration reduction, thus solving the above problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-axis sawing machine with adaptive active vibration reduction, comprising: Sawing machine frame; Active vibration damping mechanism; the active vibration damping mechanism is located on the rear side of the saw frame, and includes a support platform, support arm, vibration transmission rod, limit frame, transmission slider, swing arm one, swing arm two, transmission disc, connecting frame, transmission shaft, driven shaft, transmission belt, bevel transmission gear, bevel driven gear, transmission screw, lifting drive ring, connecting rod, pressing column, fixed platform, threaded ring, threaded drive gear, telescopic rod, vibration damping spring, and limit arm; Workpiece limiting mechanism; the workpiece limiting mechanism is set on the upper surface of the sawing machine frame, and the workpiece limiting mechanism includes a workpiece table, a locking screw, a double-headed air pump, an air guide pipe, an annular ring, an air jet head, and a support rod.

[0006] Preferably, the support platform is fixedly connected to the rear side of the saw frame. Four support arms are fixedly connected to the upper surface of the support platform. A bevel driven gear is provided below the middle of two adjacent support arms. A bevel transmission gear is meshed with the rear side of the bevel driven gear. The bevel transmission gear is rotatably connected to the front side of the connecting frame. A driven shaft is provided through the connecting frame at the same center of the bevel transmission gear. The driven shaft is connected to the bevel transmission gear. A transmission belt is sleeved on the outer side of the rear end of the driven shaft. The upper end of the transmission belt is sleeved on the outer surface of the transmission shaft. The front end of the transmission shaft passes through the connecting frame and is connected to a transmission disc. A transmission screw is vertically provided in the middle of the bevel driven gear. A lifting drive ring is threaded to the outer surface of the transmission screw. A pressing column is fixedly connected to the front side of the lifting drive ring.

[0007] Preferably, a second swing arm is rotatably connected to the front side of the transmission disk, a first swing arm is rotatably connected to the end of the second swing arm away from the transmission disk, the end of the first swing arm away from the second swing arm is rotatably connected to the rear side of the transmission slider, the transmission slider is disposed inside the limiting frame and slidably connected to the limiting frame, and a vibration transmission rod is rotatably connected to the upper surface of the transmission slider.

[0008] Preferably, a limiting arm is fixedly connected to the lower front end of the transmission slider, a telescopic rod is fixedly connected to the lower surface of the limiting arm, a pressing column is fixedly connected to the lower end of the telescopic rod, a threaded ring is provided on the upper outer surface of the pressing column, a threaded drive tooth is threadedly connected to the outer surface of the threaded ring, a shock-absorbing spring is provided on the upper surface of the threaded drive tooth, the shock-absorbing spring is sleeved on the outside of the telescopic rod, and the upper end of the shock-absorbing spring is fixedly connected to the lower surface of the limiting arm. Connecting rods are fixedly connected to both ends of the pressing column, and the ends of the two connecting rods away from the pressing column are slidably connected to the inner sides of two adjacent support arms.

[0009] Preferably, the lower end of the workpiece table is fixedly connected to the upper surface of the saw table, a locking screw is provided through the upper part of the workpiece table and the locking screw is threadedly connected to the workpiece table, and support rods are fixedly connected to both the left and right sides of the workpiece table, with the ends of the two support rods away from the workpiece table respectively fixedly connected to the upper surfaces of two annular rings.

[0010] Preferably, the interior of both annular rings is hollow, and each of the two annular rings is provided with an air guide pipe on one side. The end of each air guide pipe away from the corresponding annular ring is connected to the two air outlets of a dual-head air pump. The dual-head air pump is fixedly connected to the outside of the workpiece stage. Multiple air jets are distributed around the outer surface of both annular rings, and the positions of the multiple air jets are all obliquely towards the central axis of the annular ring.

[0011] Preferably, it also includes a sawing drive mechanism, which is located above the front side of the sawing frame. The sawing drive mechanism includes a motor, a protective cover, a positioning frame, a drive wheel, a movable arm, a push-pull frame, a saw blade, a limit crossbar, a sliding ring, and a sliding plate.

[0012] Preferably, the motor is fixedly connected to the outside of the saw frame, and the output end of the motor is connected to a drive wheel via a chain drive. A protective cover is provided on the outside of the drive wheel. The drive wheel is rotatably connected to the inside of the positioning frame. The lower end of the positioning frame is fixedly connected to the upper surface of the saw table. A movable arm is rotatably connected at the inner edge of the drive wheel. A push-pull frame is rotatably connected at the end of the movable arm away from the drive wheel. A saw blade is provided on the inner side of the lower end of the push-pull frame.

[0013] Preferably, the upper end of the push-pull frame is fixedly connected to the front and rear sides of the upper end of the two sliding plates, and the upper surface of the two sliding plates is fixedly connected to the left and right sides of the sliding ring. A limit crossbar is provided through the middle of the sliding ring, and the two ends of the limit crossbar are fixedly connected to the inner side of the positioning frame and the vibration transmission rod, respectively.

[0014] Preferably, the lower end of the transmission screw is rotatably connected to the upper surface of the fixed platform, and the fixed platform is fixedly connected to the rear side of the support platform. Beneficial effects

[0015] This invention provides a multi-axis saw with adaptive active vibration reduction. Compared with the prior art, it has the following advantages: In this invention, through the active damping mechanism, the high-frequency vibration generated by the saw blade cutting the workpiece during the sawing operation is transmitted to the limiting crossbar via the push-pull frame, and then to the vibration transmission rod on the rear side. The vibration displacement sensed by the limiting crossbar is transmitted to the active damping mechanism on the rear side. Since the rear end of the limiting crossbar is fixedly connected to the vibration transmission rod, the vibration transmission rod will reciprocate up and down synchronously with the sawing rhythm. The up and down movement of the vibration transmission rod directly drives the transmission slider to slide up and down inside the limiting frame. As the slider moves up and down with vibration, it pulls or pushes the second swing arm via the first swing arm connected to its rear. The second swing arm converts the vertical linear reciprocating motion of the transmission slider into the rotational motion of the transmission disc. When the transmission disc begins to rotate under the drive of the second swing arm, the transmission shaft, which is fixed coaxially with it, rotates synchronously. A transmission belt is fitted on the outer side of the rear end of the transmission shaft, and the lower end of the transmission belt is tightly fitted onto the outer surface of the driven shaft. When the transmission shaft rotates, friction drives the transmission belt to rotate, thereby driving the driven shaft to rotate synchronously. The power of the driven shaft is transmitted to the front end. The bevel drive gear, through its meshing connection with the bevel driven gear on the side, converts the horizontal rotational motion of the drive shaft into the vertical rotational motion of the bevel driven gear. When the bevel driven gear rotates, it drives the drive screw to rotate at high speed. The rotational motion of the drive screw is converted into the vertical linear motion of the lifting drive ring. The lifting drive ring cannot rotate with the screw; it can only move up and down along the axis of the screw, ultimately driving the pressing column connected to its front side to compress or release the damping spring. In this way, when the vibration is severe, the transmission slider moves up and down with a large amplitude, driving the transmission disc to rotate quickly, which in turn drives the screw to rotate rapidly, causing the damping spring to produce more intense expansion and contraction deformation and a greater reverse damping force, quickly offsetting the vibration energy. When the vibration decreases, the damping force decreases accordingly. In this way, the damping force can be adaptively adjusted according to the magnitude of the vibration. In addition, the cooperation between the limit bar and the transmission slider transforms the rigid impact into a flexible mechanical transmission. The stress peak is dispersed through gear and belt transmission, providing better mechanical protection for the precision saw blade and drive wheel. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front structure of a multi-axis saw with adaptive active vibration reduction proposed in this invention; Figure 2 This is a schematic diagram of the rear structure of a multi-axis saw with adaptive active vibration reduction proposed in this invention. Figure 3 This is a bottom view of the structure of a multi-axis saw with adaptive active vibration reduction proposed in this invention. Figure 4 This is a schematic diagram of the upper half of a multi-axis sawing machine with adaptive active vibration reduction proposed in this invention. Figure 5 This is a schematic diagram of the sawing drive mechanism in a multi-axis sawing machine with adaptive active vibration reduction proposed in this invention; Figure 6 This is a schematic diagram of the front structure of the active vibration reduction mechanism in a multi-axis saw with adaptive active vibration reduction proposed in this invention. Figure 7 This is a partial rear structure diagram of the active vibration reduction mechanism in a multi-axis saw with adaptive active vibration reduction proposed in this invention. Figure 8 This invention proposes a multi-axis sawing machine with adaptive active vibration reduction. Figure 2 A magnified view of A in the middle.

[0017] Legend: 1. Sawing machine frame; 2. Sawing machine table; 3. Active vibration damping mechanism; 301. Support table; 302. Support arm; 303. Vibration transmission rod; 304. Limiting frame; 305. Transmission slider; 306. Swing arm one; 307. Swing arm two; 308. Transmission disc; 309. Connecting frame; 310. Transmission shaft; 311. Driven shaft; 312. Transmission belt; 313. Bevel transmission gear; 314. Bevel driven gear; 315. Transmission screw; 316. Lifting drive ring; 317. Connecting rod; 318. Pressing column; 319. Fixed table; 320. Screw 321. Threaded ring; 322. Threaded drive tooth; 323. Telescopic rod; 324. Shock-absorbing spring; 325. Limiting arm; 4. Sawing machine drive mechanism; 401. Motor; 402. Protective cover; 403. Positioning frame; 404. Drive wheel; 405. Movable arm; 406. Push-pull frame; 407. Saw blade; 408. Limiting crossbar; 409. Sliding ring; 410. Sliding plate; 5. Workpiece limiting mechanism; 501. Workpiece table; 502. Locking screw; 503. Double-headed air pump; 504. Air guide pipe; 505. Ring; 506. Air jet head; 507. Support rod. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-8 The present invention provides two technical solutions, specifically including the following embodiments: Example 1: A multi-axis saw with adaptive active vibration reduction includes: a saw frame 1; an active vibration reduction mechanism 3; the active vibration reduction mechanism 3 is located on the rear side of the saw frame 1, and includes a support platform 301, a support arm 302, a vibration transmission rod 303, a limiting frame 304, a transmission slider 305, a swing arm 1 306, a swing arm 2 307, a transmission disc 308, a connecting frame 309, a transmission shaft 310, a driven shaft 311, a transmission belt 312, a bevel transmission gear 313, a bevel driven gear 314, a transmission screw 315, a lifting drive ring 316, a connecting rod 317, a pressing column 318, a fixed platform 319, a threaded ring 320, a threaded drive gear 321, a telescopic rod 322, a vibration damping spring 323, and a limiting arm 324. The support platform 301 is fixedly connected to the rear side of the saw frame 1. Four support arms 302 are fixedly connected to the upper surface of the support platform 301. A bevel driven gear 314 is provided below the middle of two adjacent support arms 302. A bevel transmission gear 313 is meshed with the rear side of the bevel driven gear 314. The bevel transmission gear 313 is rotatably connected to the front side of the connecting frame 309. A driven shaft 311 is provided through the connecting frame 309 at the same center of the bevel transmission gear 313, and the driven shaft 311 is connected to the bevel transmission gear 313. A transmission belt 312 is sleeved on the outer side of the rear end of the driven shaft 311. The upper end of the transmission belt 312 is sleeved on the outer surface of the transmission shaft 310. The front end of the transmission shaft 310 passes through the connecting frame 309 and is connected to a transmission belt 310. A transmission screw 315 is vertically arranged in the middle of the conical driven gear 314 of the transmission disc 308. A lifting drive ring 316 is threaded to the outer surface of the transmission screw 315. A pressing column 318 is fixedly connected to the front side of the lifting drive ring 316. A swing arm 307 is rotatably connected to the front side of the transmission disc 308. A swing arm 306 is rotatably connected to the end of the swing arm 307 away from the transmission disc 308. The end of the swing arm 306 away from the swing arm 307 is rotatably connected to the rear side of the transmission slider 305. The transmission slider 305 is located inside the limiting frame 304 and is slidably connected to the limiting frame 304. A vibration transmission rod 303 is rotatably connected to the upper surface of the transmission slider 305. A limiting arm 324 is fixedly connected to the lower front side of the transmission slider 305. A telescopic rod 322 is fixedly connected to the lower surface of arm 324. A pressing column 318 is fixedly connected to the lower end of the telescopic rod 322. A threaded ring 320 is provided on the upper outer surface of the pressing column 318. A threaded drive tooth 321 is threadedly connected to the outer surface of the threaded ring 320. A shock-absorbing spring 323 is provided on the upper surface of the threaded drive tooth 321. The shock-absorbing spring 323 is sleeved on the outside of the telescopic rod 322, and the upper end of the shock-absorbing spring 323 is fixedly connected to the lower surface of the limiting arm 324. Connecting rods 317 are fixedly connected to both ends of the pressing column 318. The ends of the two connecting rods 317 away from the pressing column 318 are slidably connected to the inner sides of two adjacent support arms 302. The lower end of the transmission screw 315 is rotatably connected to the upper surface of the fixed platform 319.The fixed platform 319 is fixedly connected to the rear side of the support platform 301. It should be noted that if large buffer mechanisms are installed on both sides of the push-pull frame 406, it will significantly increase the volume of the front end of the machine head, easily interfering with workpiece loading / unloading and the cutting field of view. Furthermore, the buffer mechanisms are easily contaminated by cutting fluid and metal shavings.

[0020] During operation, the high-frequency vibration generated by the saw blade 407 when cutting the workpiece is transmitted through the push-pull frame 406 to the limit crossbar 408, and then to the vibration transmission rod 303 on the rear side. The vibration displacement sensed by the limit crossbar 408 is transmitted to the active damping mechanism 3 on the rear side. Since the rear end of the limit crossbar 408 is fixedly connected to the vibration transmission rod 303, the vibration transmission rod 303 will move up and down synchronously with the rhythm of sawing. The up and down movement of the vibration transmission rod 303 directly drives the transmission slider 305 to slide up and down inside the limit frame 304. When the transmission slider 305 moves up and down with the vibration... When in motion, the swing arm 306 connected to its rear side pulls or pushes the swing arm 307. The swing arm 307 converts the vertical linear reciprocating motion of the transmission slider 305 into the rotational motion of the transmission disk 308. When the transmission disk 308 starts to rotate under the drive of the swing arm 307, the transmission shaft 310, which is coaxially fixed with it, rotates synchronously. A transmission belt 312 is sleeved on the outer side of the rear end of the transmission shaft 310. The lower end of the transmission belt 312 is tightly sleeved on the outer surface of the driven shaft 311. When the transmission shaft 310 rotates, the friction force drives the transmission belt 312 to rotate, thereby driving the driven shaft 311 to rotate synchronously. Power is transmitted to the bevel gear 313 at the front end. Because the bevel gear 313 meshes with the bevel driven gear 314 on the side, the horizontal rotational motion of the drive shaft 310 is converted into the vertical rotational motion of the bevel driven gear 314. When the bevel driven gear 314 rotates, it drives the transmission screw 315 to rotate at high speed. The rotational motion of the transmission screw 315 is converted into the vertical linear motion of the lifting drive ring 316. The lifting drive ring 316 cannot rotate with the screw; it can only move up and down along the axis of the screw, ultimately driving the pressing column 318 connected to its front side to compress or... In this way, when the vibration is severe, the transmission slider 305 moves up and down with a large amplitude, driving the transmission disc 308 to rotate at a high speed, which in turn drives the lead screw to rotate rapidly, causing the damping spring 323 to produce more intense expansion and contraction deformation and greater reverse damping force, which quickly offsets the vibration energy. When the vibration decreases, the damping force decreases accordingly. In this way, the damping force can be adaptively adjusted according to the magnitude of the vibration. In addition, the cooperation between the limit bar 408 and the transmission slider 305 transforms the rigid impact into a flexible mechanical transmission. The stress peak is dispersed through gear and belt transmission, which provides better mechanical protection for the precision saw blade 407 and the drive wheel 404.

[0021] Example 2: Based on Embodiment 1, a workpiece limiting mechanism 5 is provided. The workpiece limiting mechanism 5 is installed on the upper surface of the sawing machine frame 1. The workpiece limiting mechanism 5 includes a workpiece table 501, a locking screw 502, a double-headed air pump 503, an air guide pipe 504, an annular ring 505, an air jet head 506, and support rods 507. The lower end of the workpiece table 501 is fixedly connected to the upper surface of the sawing machine table 2. The locking screw 502 is threadedly connected to the upper part of the workpiece table 501. Support rods 507 are fixedly connected to both the left and right sides of the workpiece table 501, with the ends of the two support rods 507 furthest from the workpiece table 501. The two rings 505 are fixedly connected to the upper surface of the two rings 505 respectively. The interior of the two rings 505 is hollow. Each of the two rings 505 has a corresponding air guide pipe 504. The end of the two air guide pipes 504 away from the corresponding ring 505 is connected to the two air outlets of the double-headed air pump 503 respectively. The double-headed air pump 503 is fixedly connected to the outside of the workpiece table 501. Multiple air jets 506 are distributed around the outer surface of the two rings 505. The positions of the multiple air jets 506 are all obliquely towards the central axis of the rings 505. Before the sawing operation, the workpiece to be processed is placed on the workpiece table 501. The operator rotates the locking screw 502. Since the locking screw 502 is threadedly connected to the workpiece table 501, the rotation drives it to move vertically downwards until the bottom end of the locking screw 502 tightly abuts against the upper surface of the workpiece, thus achieving initial rigid fixation of the workpiece in the vertical direction. The double-headed air pump 503, fixed on the outside of the workpiece table 501, is then activated. When compressed air is ejected at high speed from the jet nozzle 506, a ring-shaped, inwardly inclined high-pressure airflow barrier is formed inside the annular ring 505. This airflow applies a continuous and uniform thrust to the side of the workpiece located in the middle of the annular ring 505. If the workpiece wobbles slightly from side to side during the cutting process, the airflow resistance will automatically push it towards the center position. Since the jet nozzle 506 is angled towards the center, part of the airflow will blow towards the cutting position between the saw blade 407 and the workpiece. This part of the airflow can promptly blow away the metal chips and heat generated during cutting from the saw teeth, preventing chip accumulation from affecting cutting accuracy or causing the saw blade 407 to overheat. Preferably, it also includes a sawing drive mechanism 4, which is located above the front side of the sawing frame 1. The sawing drive mechanism 4 includes a motor 401, a protective cover 402, a positioning frame 403, a drive wheel 404, a movable arm 405, a push-pull frame 406, a saw blade 407, a limit crossbar 408, a sliding ring 409, and a sliding plate 410. The motor 401 is fixedly connected to the outside of the sawing frame 1, and the output end of the motor 401 is connected to a drive mechanism via a chain drive. The drive wheel 404 is rotatably connected to the inner side of the positioning frame 403. The lower end of the positioning frame 403 is fixedly connected to the upper surface of the saw table 2. A movable arm 405 is rotatably connected to the inner edge of the drive wheel 404. A push-pull frame 406 is rotatably connected to the end of the movable arm 405 away from the drive wheel 404. A saw blade 407 is provided on the inner side of the lower end of the push-pull frame 406. The upper end of the push-pull frame 406 is fixed on both the front and rear sides. The two sliding plates 410 are connected, and sliding rings 409 are fixedly connected to the left and right sides of the upper surface of the two sliding plates 410. A limit bar 408 is provided through the middle of the sliding ring 409. The two ends of the limit bar 408 are fixedly connected to the inner side of the positioning frame 403 and the vibration transmission rod 303, respectively. The motor 401 fixed on the outside of the saw frame 1 is started. The output end of the motor 401 drives the drive wheel 404 to rotate through the chain drive belt 312. When the drive wheel 404 rotates, it can pull or push the movable arm 405 connected to it. Since the other end of the movable arm 405 is rotatably connected to the push-pull frame 406, and the push-pull frame 406 is constrained by the limit structure, the continuous rotation of the drive wheel 404 is converted into the reciprocating motion of the movable arm 405. When the push-pull frame 406 swings left and right under the drive of the movable arm 405, the saw blade 407 moves in a left and right arc simultaneously, thereby performing sawing operation on the workpiece placed below.

[0022] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-axis saw with adaptive active vibration reduction, characterized in that: include: Sawing machine frame (1); Active damping mechanism (3); The active damping mechanism (3) is located on the rear side of the saw frame (1). The active damping mechanism (3) includes a support platform (301), a support arm (302), a vibration transmission rod (303), a limit frame (304), a transmission slider (305), a swing arm one (306), a swing arm two (307), a transmission disc (308), a connecting frame (309), a transmission shaft (310), a driven shaft (311), a transmission belt (312), a bevel transmission gear (313), a bevel driven gear (314), a transmission screw (315), a lifting drive ring (316), a connecting rod (317), a pressing column (318), a fixed platform (319), a threaded ring (320), a threaded drive tooth (321), a telescopic rod (322), a damping spring (323), and a limit arm (324). Workpiece limiting mechanism (5); The workpiece limiting mechanism (5) is set on the upper surface of the saw bed frame (1). The workpiece limiting mechanism (5) includes a workpiece table (501), a locking screw (502), a double-headed air pump (503), an air guide pipe (504), an annular ring (505), an air jet head (506), and a support rod (507).

2. The multi-axis sawing machine with adaptive active vibration reduction according to claim 1, characterized in that: The support platform (301) is fixedly connected to the rear side of the saw frame (1). Four support arms (302) are fixedly connected to the upper surface of the support platform (301). A bevel driven gear (314) is provided below the middle of two adjacent support arms (302). A bevel transmission gear (313) is meshed with the rear side of the bevel driven gear (314). The bevel transmission gear (313) is rotatably connected to the front side of the connecting frame (309). A driven shaft (311) is provided through the connecting frame (309) at the same center of the bevel transmission gear (313). 11) The driven shaft (311) is connected to the bevel gear (313) for transmission. The outer rear end of the driven shaft (311) is fitted with a transmission belt (312). The upper end of the transmission belt (312) is fitted on the outer surface of the transmission shaft (310). The front end of the transmission shaft (310) passes through the connecting frame (309) and is connected to the transmission disc (308). The middle part of the bevel driven gear (314) is vertically provided with a transmission screw (315). The outer surface of the transmission screw (315) is threaded with a lifting drive ring (316). The front side of the lifting drive ring (316) is fixedly connected with a pressing column (318).

3. The multi-axis saw with adaptive active vibration reduction according to claim 2, characterized in that: The front side of the transmission disk (308) is rotatably connected to a second swing arm (307). The end of the second swing arm (307) away from the transmission disk (308) is rotatably connected to a first swing arm (306). The end of the first swing arm (306) away from the second swing arm (307) is rotatably connected to the rear side of the transmission slider (305). The transmission slider (305) is located inside the limiting frame (304) and is slidably connected to the limiting frame (304). The upper surface of the transmission slider (305) is rotatably connected to a vibration transmission rod (303).

4. A multi-axis sawing machine with adaptive active vibration reduction according to claim 3, characterized in that: The lower front end of the transmission slider (305) is fixedly connected to a limiting arm (324). A telescopic rod (322) is fixedly connected to the lower surface of the limiting arm (324). A pressing column (318) is fixedly connected to the lower end of the telescopic rod (322). A threaded ring (320) is provided on the upper outer surface of the pressing column (318). A threaded drive tooth (321) is threadedly connected to the outer surface of the threaded ring (320). A shock-absorbing spring (323) is provided on the upper surface of the threaded drive tooth (321). The shock-absorbing spring (323) is sleeved on the outside of the telescopic rod (322), and the upper end of the shock-absorbing spring (323) is fixedly connected to the lower surface of the limiting arm (324). Connecting rods (317) are fixedly connected to both the left and right ends of the pressing column (318). The ends of the two connecting rods (317) away from the pressing column (318) are slidably connected to the inner sides of two adjacent support arms (302).

5. A multi-axis sawing machine with adaptive active vibration reduction according to claim 1, characterized in that: The lower end of the workpiece table (501) is fixedly connected to the upper surface of the saw table (2). A locking screw (502) is provided through the upper part of the workpiece table (501), and the locking screw (502) is threadedly connected to the workpiece table (501). Support rods (507) are fixedly connected to both the left and right sides of the workpiece table (501). The ends of the two support rods (507) away from the workpiece table (501) are respectively fixedly connected to the upper surfaces of two annular rings (505).

6. A multi-axis sawing machine with adaptive active vibration reduction according to claim 5, characterized in that: Both annular rings (505) have hollow interiors. Each annular ring (505) has a corresponding air guide pipe (504) on one side. The ends of the two air guide pipes (504) away from the corresponding annular rings (505) are respectively connected to the two air outlets of a dual-head air pump (503). The dual-head air pump (503) is fixedly connected to the outside of the workpiece stage (501). Multiple air jets (506) are distributed around the outer surface of both annular rings (505), and the positions of the multiple air jets (506) are all obliquely towards the central axis of the annular rings (505).

7. A multi-axis sawing machine with adaptive active vibration reduction according to claim 1, characterized in that: It also includes a saw drive mechanism (4), which is located above the front side of the saw frame (1). The saw drive mechanism (4) includes a motor (401), a protective cover (402), a positioning frame (403), a drive wheel (404), a movable arm (405), a push-pull frame (406), a saw blade (407), a limit crossbar (408), a sliding ring (409), and a sliding plate (410).

8. A multi-axis sawing machine with adaptive active vibration reduction according to claim 7, characterized in that: The motor (401) is fixedly connected to the outside of the saw frame (1). The output end of the motor (401) is connected to the drive wheel (404) via chain drive. The outer side of the drive wheel is covered with a protective cover (402). The drive wheel (404) is rotatably connected to the inside of the positioning frame (403). The lower end of the positioning frame (403) is fixedly connected to the upper surface of the saw table (2). A movable arm (405) is rotatably connected at the inner edge of the drive wheel (404). A push-pull frame (406) is rotatably connected at the end of the movable arm (405) away from the drive wheel (404). A saw blade (407) is provided on the inner side of the lower end of the push-pull frame (406).

9. A multi-axis sawing machine with adaptive active vibration reduction according to claim 7, characterized in that: The upper end of the push-pull frame (406) is fixedly connected to the front and rear sides of the upper end of the sliding plate (410). The upper surface of the two sliding plates (410) is fixedly connected to the left and right sides of the sliding ring (409). A limit bar (408) is provided through the middle of the sliding ring (409). The two ends of the limit bar (408) are fixedly connected to the inner side of the positioning frame (403) and the vibration transmission rod (303), respectively.

10. A multi-axis sawing machine with adaptive active vibration reduction according to claim 1, characterized in that: The lower end of the transmission screw (315) is rotatably connected to the upper surface of the fixed platform (319), which is fixedly connected to the rear side of the support platform (301).

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