Servo follow-up fixed-length tracking method for high-precision cold cutting flying saw and flying saw

Abstract

The invention relates to the technical field of flying saws, in particular to a servo follow-up fixed-length tracking method for a high-precision cold cutting flying saw and the flying saw.The flying saw comprises an equipment frame, two guide rails are fixedly connected to the equipment frame, a movable saw blade is arranged below a movable seat, a transmission shaft is rotationally connected to an adjusting frame, and a fixed saw blade is arranged on the transmission shaft; the saw blade maintenance mechanism is fixedly connected to the adjusting frame, when cutting is needed, the movable saw blade can be driven by the threaded rod to be adjusted, so that the distance between the movable saw blade and the fixed saw blade reaches the needed precision, then the movable saw blade and the fixed saw blade can be driven by the transmission shaft to rotate and cut at the same time, and the cutting efficiency is improved. The cutting of a single saw blade is avoided, particularly during mass production, the production period can be remarkably shortened, the overall production efficiency is improved, cutting of different widths can be easily achieved by adjusting the distance between the two saw blades, and diversified production requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of flying saw machines, and in particular to a servo follow-up sizing tracking method for a high-precision cold-cut flying saw machine and the flying saw machine. Background Art

[0002] High-precision cold-cut flying saw is a kind of equipment that can achieve fast and precise cutting in the cutting process. It is mainly used for cutting metal and non-metal materials, especially in applications that require high precision and high surface quality, such as machining, electronic component manufacturing, etc.

[0003] The servo follow-up sizing tracking method is an important part of the high-precision cold-cut flying saw machine. The core of this method is to use the feedback mechanism of the servo system to achieve precise control of the cutting position. The servo motor controls the movement of the flying saw machine to provide high-precision position control. The sizing device is used to set the standard for the cutting length, which is usually measured by a photoelectric sensor or a laser rangefinder. The control system is responsible for receiving the sensor data and controlling the movement of the flying saw through the servo motor.

[0004] Existing flying saw machines are usually equipped with a single saw blade, which can meet the cutting needs in many applications, but there are still some disadvantages. Having only one saw blade means that only one cut can be made at a time, especially in large-scale production, and the overall efficiency may not be as good as a multi-saw blade system. In an environment that requires high output, production efficiency may be limited, resulting in longer production cycles.

[0005] In summary, the prior art lacks technology for using adjustable multiple saw blades in flying saw machines. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings existing in the background technology, and to propose a high-precision cold-cut flying saw machine servo follow-up fixed-length tracking method and a flying saw machine.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a flying saw machine, including an equipment frame, two guide rails are fixedly connected to the equipment frame, a slide is arranged above the equipment frame, a protective cover is fixedly connected to the slide, an adjustment frame is slidingly arranged inside the protective cover, a moving seat is slidingly arranged on the adjustment frame, a movable saw blade is arranged below the moving seat, a transmission shaft is rotatably connected to the adjustment frame, a fixed saw blade is arranged on the transmission shaft, and a saw blade maintenance mechanism is fixedly arranged on the adjustment frame.

[0008] Preferably, a plurality of roller frames are fixedly installed on the bottom of the slide seat, two rollers are rotatably connected to the roller frames, and the rollers are arranged in sliding contact with the guide rails.

[0009] Preferably, one end of the adjusting frame passes through the protective cover and is connected and fixedly provided with a hydraulic cylinder, the hydraulic cylinder is connected and fixedly provided with the protective cover, a threaded rod is rotatably provided on the adjusting frame, one end of the threaded rod is connected and fixedly provided with a motor A, the motor A is connected and fixedly provided with the adjusting frame, the threaded rod is threadedly connected with the movable seat, and a rack is connected and fixedly provided on one side of the adjusting frame.

[0010] Preferably, a worm is rotatably connected to the movable seat, one end of the worm is fixedly connected to a gear, and the gear is meshed with a rack for transmission.

[0011] Preferably, a rotating sleeve is fixedly provided through the movable saw blade, the rotating sleeve is slidingly matched with the transmission shaft, a swing frame is movably inserted into one side of the rotating sleeve, one end of the swing frame is rotatably connected to the movable seat, a worm gear is fixedly provided on the swing frame, the worm gear and the worm are meshingly driven, a positioning rod is threadedly provided on the swing frame, a limiting ring groove is provided on the rotating sleeve, and the inner end of the positioning rod is in sliding contact with the inner wall of the limiting ring groove.

[0012] Preferably, one end of the transmission shaft passes through the adjustment frame and is connected and fixedly provided with a motor B, and the motor B is connected and fixedly provided with the adjustment frame.

[0013] Preferably, a mounting sleeve is fixedly connected inside the fixed saw blade, the mounting sleeve is slidingly matched with the transmission shaft, and the mounting sleeve is fixedly mounted on the transmission shaft by bolts.

[0014] Preferably, the saw blade maintenance mechanism includes an electric push rod, one end of the electric push rod is connected and fixed to the adjusting frame, the other end of the electric push rod is connected and fixed to an adjusting seat, the adjusting seat is slidably matched with a sliding frame, a grindstone frame is provided on one side of the sliding frame, the grindstone frame is frictionally contacted with the saw teeth of the movable saw blade and the fixed saw blade, two guide rods are connected and fixed to the grindstone frame, the guide rods are slidably matched with the sliding frame, a plurality of springs are connected and fixed between the grindstone frame and the sliding frame, a motor C is connected and fixed to the adjusting seat, a toggle rod is connected and fixed to the output end of the motor C, a slide groove is provided on the sliding frame, and the inner wall of the slide groove is in sliding contact with the outer wall of the toggle rod.

[0015] A servo follow-up fixed-length tracking method for a high-precision cold-cut flying saw machine comprises the following steps:

[0016] S1. When the flying saw machine is needed, the movable saw blade and the fixed saw blade must be installed on the equipment first, and then the transmission shaft must be used to drive the movable saw blade and the fixed saw blade to rotate and cut at the same time;

[0017] S2. When the movable saw blade is not needed, the movable base is driven to move so that the movable saw blade is removed from the transmission shaft and rotated to one side and above without affecting the use of the fixed saw blade;

[0018] S3. When the movable saw blade and the fixed saw blade need to be maintained, first move the movable saw blade close to the fixed saw blade, then use the saw blade maintenance mechanism to contact the saw teeth of the movable saw blade close to the fixed saw blade, and grind and maintain the saw teeth of the movable saw blade close to the fixed saw blade.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. When cutting is required, the threaded rod can be used to drive the movable saw blade to adjust the spacing between the movable saw blade and the fixed saw blade to the required accuracy, and then the transmission shaft can drive the movable saw blade and the fixed saw blade to rotate and cut at the same time, avoiding the cutting of a single saw blade. Especially in mass production, it can significantly reduce the production cycle and improve the overall production efficiency. By adjusting the spacing between the two saw blades, cutting of different widths can be easily achieved to meet diverse production needs;

[0021] 2. By setting up a movable seat, when the movable saw blade is not needed, the movable saw blade will be moved away and the movable saw blade will be driven to rotate under the action of the rack, so that the movable saw blade can be effectively moved to the upper side without interfering with the normal use of the fixed saw blade, which not only improves the working efficiency, but also enhances the safety and convenience of operation;

[0022] 3. By setting up a saw blade maintenance mechanism, after the movable saw blade and the fixed saw blade are used, the saw teeth on the movable saw blade and the fixed saw blade can be polished and maintained by using a rapidly reciprocating grindstone rack, which can maintain the sharpness of the saw blade and improve cutting efficiency and quality. Through timely maintenance, the saw blade wear can be reduced, its service life can be extended, and the replacement frequency can be reduced. At the same time, the saw blade can be automatically maintained without the need to remove the saw blade for maintenance, which reduces manual intervention and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A servo follow-up sizing tracking method for a high-precision cold-cut flying saw machine and a schematic diagram of the overall structure of the flying saw machine according to the present invention;

[0024] Figure 2 A servo follow-up sizing tracking method for a high-precision cold-cut flying saw machine and a partial cross-sectional schematic diagram of a part of the structure of the flying saw machine according to the present invention;

[0025] Figure 3 A servo follow-up sizing tracking method for a high-precision cold-cut flying saw machine and a schematic diagram of a sliding seat structure of the flying saw machine according to the present invention;

[0026] Figure 4 A sectional schematic diagram of a servo follow-up sizing tracking method for a high-precision cold-cut flying saw machine and an adjusting frame structure of the flying saw machine according to the present invention;

[0027] Figure 5 A servo follow-up sizing tracking method for a high-precision cold-cut flying saw machine and a cross-sectional schematic diagram of a moving seat structure of the flying saw machine according to the present invention;

[0028] Figure 6 It is a schematic diagram of a servo follow-up sizing tracking method for a high-precision cold-cut flying saw machine and a movable saw blade structure of the flying saw machine according to the present invention;

[0029] Figure 7 It is a schematic diagram of a servo follow-up fixed-length tracking method for a high-precision cold-cut flying saw machine and a fixed saw blade and a transmission shaft structure of the flying saw machine according to the present invention;

[0030] Figure 8 The present invention is a schematic diagram of a servo follow-up sizing tracking method for a high-precision cold-cut flying saw machine and a saw blade maintenance mechanism structure of the flying saw machine.

[0031] 1. Equipment frame; 2. Guide rail; 3. Slide seat; 4. Protective cover; 5. Adjustment frame; 6. Moving seat; 7. Movable saw blade; 8. Transmission shaft; 9. Fixed saw blade; 10. Saw blade maintenance mechanism; 301. Roller frame; 302. Roller; 501. Threaded rod; 502. Motor A; 503. Rack; 504. Hydraulic cylinder; 601. Worm; 602. Gear; 701. Rotating sleeve; 702. Swinging frame; 703. Worm wheel; 704. Positioning rod; 705. Limiting ring groove; 801. Motor B; 901. Mounting sleeve; 902. Bolt; 1001. Electric push rod; 1002. Adjustment seat; 1003. Sliding frame; 1004. Grinding stone frame; 1005. Guide rod; 1006. Spring; 1007. Motor C; 1008. Toggle rod; 1009. Slide groove. DETAILED DESCRIPTION

[0032] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0033] like Figure 1-Figure 8The servo follow-up fixed-length tracking method of a high-precision cold-cut flying saw machine and the flying saw machine shown in the figure include an equipment frame 1, on which two guide rails 2 are connected and fixedly arranged, a slide seat 3 is arranged above the equipment frame 1, a protective cover 4 is connected and fixedly arranged on the slide seat 3, an adjustment frame 5 is slidably arranged inside the protective cover 4, a moving seat 6 is slidably arranged on the adjustment frame 5, a movable saw blade 7 is arranged below the moving seat 6, a transmission shaft 8 is rotatably connected to the adjustment frame 5, a fixed saw blade 9 is arranged on the transmission shaft 8, and a saw blade maintenance mechanism 10 is connected and fixedly arranged on the adjustment frame 5.

[0034] like Figure 3 As shown, a plurality of roller frames 301 are fixedly installed at the bottom of the slide seat 3 , and two rollers 302 are rotatably connected to the roller frames 301 , and the rollers 302 are arranged in sliding contact with the guide rail 2 .

[0035] like Figure 4 As shown, one end of the adjusting frame 5 passes through the protective cover 4 and is connected and fixedly provided with a hydraulic cylinder 504, the hydraulic cylinder 504 is connected and fixedly provided with the protective cover 4, a threaded rod 501 is rotatably connected to the adjusting frame 5, one end of the threaded rod 501 is connected and fixedly provided with a motor A502, the motor A502 is connected and fixedly provided with the adjusting frame 5, the threaded rod 501 is threadedly connected with the moving seat 6, and a rack 503 is connected and fixedly provided on one side of the adjusting frame 5.

[0036] like Figure 5 As shown, a worm 601 is rotatably connected to the movable seat 6, and a gear 602 is fixedly connected to one end of the worm 601, and the gear 602 is meshed with the rack 503 for transmission. The worm 601 drives the swing frame 702 connected to the worm wheel 703 to rotate, so that the movable saw blade 7 rotates to one side and above, without affecting the use of the fixed saw blade 9.

[0037] like Figure 6 As shown, a rotating sleeve 701 is fixedly connected and provided in the movable saw blade 7, and the rotating sleeve 701 is slidably matched with the transmission shaft 8. A swing frame 702 is movably inserted and provided on one side of the rotating sleeve 701, and one end of the swing frame 702 is rotatably connected and provided with the moving seat 6. A worm wheel 703 is fixedly connected and provided on the swing frame 702, and the worm wheel 703 is meshed and driven with the worm 601. A positioning rod 704 is threadedly provided on the swing frame 702, and a limited ring groove 705 is provided on the rotating sleeve 701. The inner end of the positioning rod 704 is slidably contacted with the inner wall of the limited ring groove 705. The rotating sleeve 701 on the movable saw blade 7 is inserted into the swing frame 702, and then the positioning rod 704 is rotated so that one end of the positioning rod 704 is inserted into the limited ring groove 705 on the rotating sleeve 701, so as to limit the rotating sleeve 701.

[0038] like Figure 7As shown, one end of the transmission shaft 8 passes through the adjustment frame 5 and is connected and fixedly provided with a motor B801, which is connected and fixedly provided with the adjustment frame 5. The motor B801 is used to drive the transmission shaft 8 to rotate, so that the transmission shaft 8 drives the movable saw blade 7 and the fixed saw blade 9 to rotate, and performs simultaneous cutting.

[0039] like Figure 7 As shown, a mounting sleeve 901 is fixedly connected inside the fixed saw blade 9, and the mounting sleeve 901 is slidably matched with the transmission shaft 8. The mounting sleeve 901 is fixedly mounted on the transmission shaft 8 through a bolt 902. The mounting sleeve 901 on the fixed saw blade 9 is sleeved on the transmission shaft 8, and then the bolt 902 is turned to fix the mounting sleeve 901 on the transmission shaft 8.

[0040] like Figure 8 As shown, the saw blade maintenance mechanism 10 includes an electric push rod 1001, one end of the electric push rod 1001 is connected and fixed to the adjustment frame 5, the other end of the electric push rod 1001 is connected and fixed to an adjustment seat 1002, a sliding frame 1003 is slidably provided on the adjustment seat 1002, a grinding stone frame 1004 is provided on one side of the sliding frame 1003, the grinding stone frame 1004 is frictionally contacted with the saw teeth of the movable saw blade 7 and the fixed saw blade 9, and two grinding stones are connected and fixed on the grinding stone frame 1004. A guide rod 1005 is provided, and the guide rod 1005 is slidably matched with the sliding frame 1003. A plurality of springs 1006 are connected and fixedly provided between the grinding stone frame 1004 and the sliding frame 1003. A motor C1007 is connected and fixedly provided on the adjustment seat 1002. A toggle rod 1008 is connected and fixedly provided on the output end of the motor C1007. A sliding groove 1009 is provided on the sliding frame 1003. The inner wall of the sliding groove 1009 is arranged in sliding contact with the outer wall of the toggle rod 1008. Move the movable saw blade 7 close to the fixed saw blade 9, and then use the electric push rod 1001 to drive the grindstone frame 1004 to contact the saw teeth of the movable saw blade 7 close to the fixed saw blade 9, and then use the motor C1007 to drive the toggle rod 1008 to rotate, so that the toggle rod 1008 drives the sliding frame 1003 with a slide groove 1009 to move back and forth, and the grindstone frame 1004 connected to the guide rod 1005 moves back and forth. At the same time, the motor B801 is used to drive the movable saw blade 7 and the fixed saw blade 9 to rotate slowly, so that the grindstone frame 1004 grinds and maintains the saw teeth of the movable saw blade 7 and the fixed saw blade 9.

[0041] A servo follow-up fixed-length tracking method for a high-precision cold-cut flying saw machine comprises the following steps:

[0042] S1. When the flying saw machine needs to be used, the movable saw blade 7 and the fixed saw blade 9 need to be installed on the device first, and then the transmission shaft 8 is used to drive the movable saw blade 7 and the fixed saw blade 9 to rotate and perform simultaneous cutting;

[0043] S2. When the movable saw blade 7 is not needed, the movable base 6 is driven to move so that the movable saw blade 7 is removed from the transmission shaft 8 and rotated to one side and above without affecting the use of the fixed saw blade 9;

[0044] S3. When the movable saw blade 7 and the fixed saw blade 9 need to be maintained, first move the movable saw blade 7 close to the fixed saw blade 9, then use the saw blade maintenance mechanism 10 to contact the saw teeth of the movable saw blade 7 close to the fixed saw blade 9, and grind and maintain the saw teeth of the movable saw blade 7 close to the fixed saw blade 9.

[0045] Working principle: When the flying saw machine is needed, the movable saw blade 7 and the fixed saw blade 9 need to be installed on the equipment first. First, the mounting sleeve 901 on the fixed saw blade 9 is mounted on the transmission shaft 8, and then the bolt 902 is rotated to fix the mounting sleeve 901 on the transmission shaft 8 to achieve the installation of the fixed saw blade 9. Then, the rotating sleeve 701 on the movable saw blade 7 is inserted into the swing frame 702, and then the positioning rod 704 is rotated so that one end of the positioning rod 704 is inserted into the limiting ring groove 705 on the rotating sleeve 701 to limit the rotating sleeve 701.

[0046] Then, the motor A502 is used to drive the threaded rod 501 to rotate, so that the threaded rod 501 drives the moving seat 6 to move, so that the movable saw blade 7 is close to the fixed saw blade 9, and the distance between the movable saw blade 7 and the fixed saw blade 9 is adjusted to the required distance. Then, the motor B801 is used to drive the transmission shaft 8 to rotate, so that the transmission shaft 8 drives the movable saw blade 7 and the fixed saw blade 9 to rotate. Then, the sizing device is used to set the standard of the cutting length, and a photoelectric sensor or a laser rangefinder is usually used for measurement. The control system is responsible for receiving the sensor data, and the servo motor controls the movement of the flying saw to perform servo follow-up sizing tracking cutting;

[0047] When the movable saw blade 7 and the fixed saw blade 9 need to be maintained, firstly, the movable saw blade 7 is brought close to the fixed saw blade 9, and then the electric push rod 1001 is used to drive the grindstone frame 1004 to contact the saw teeth of the movable saw blade 7 close to the fixed saw blade 9, and then the motor C1007 is used to drive the toggle rod 1008 to rotate, so that the toggle rod 1008 drives the sliding frame 1003 with the slide groove 1009 to move back and forth, so that the grindstone frame 1004 connected to the guide rod 1005 moves back and forth, and at the same time, the motor B801 is used to drive the movable saw blade 7 and the fixed saw blade 9 to rotate slowly, so that the grindstone frame 1004 grinds and maintains the saw teeth of the movable saw blade 7 and the fixed saw blade 9;

[0048] When the movable saw blade 7 is not needed, the movable seat 6 is driven to move so that the movable saw blade 7 is removed from the transmission shaft 8, and then under the action of the rack 503, the gear 602 drives the connected worm 601 to rotate, so that the worm 601 drives the swing frame 702 connected to the worm wheel 703 to rotate, so that the movable saw blade 7 rotates to the upper side without affecting the use of the fixed saw blade 9.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A flying saw machine, comprising an equipment frame (1), characterized in that: Two guide rails (2) are connected and fixedly arranged on the equipment frame (1); a slide seat (3) is arranged above the equipment frame (1); a protective cover (4) is connected and fixedly arranged on the slide seat (3); an adjustment frame (5) is slidably arranged inside the protective cover (4); a movable seat (6) is slidably arranged on the adjustment frame (5); a movable saw blade (7) is arranged below the movable seat (6); a transmission shaft (8) is rotatably connected to the adjustment frame (5); a fixed saw blade (9) is arranged on the transmission shaft (8); and a saw blade maintenance mechanism (10) is connected and fixedly arranged on the adjustment frame (5).

2. A flying saw machine according to claim 1, characterized in that: A plurality of roller frames (301) are fixedly mounted on the bottom of the slide seat (3), two rollers (302) are rotatably connected to the roller frames (301), and the rollers (302) are arranged in sliding contact with the guide rails (2).

3. A flying saw machine according to claim 1, characterized in that: One end of the adjustment frame (5) passes through the protective cover (4) and is connected and fixedly provided with a hydraulic cylinder (504), the hydraulic cylinder (504) is connected and fixedly provided with the protective cover (4), a threaded rod (501) is rotatably connected and provided on the adjustment frame (5), one end of the threaded rod (501) is connected and fixedly provided with a motor A (502), the motor A (502) is connected and fixedly provided with the adjustment frame (5), the threaded rod (501) is threadedly connected and provided with a movable seat (6), and one side of the adjustment frame (5) is connected and fixedly provided with a rack (503).

4. A flying saw machine according to claim 1, characterized in that: A worm (601) is rotatably connected to the movable seat (6), one end of the worm (601) is fixedly connected to a gear (602), and the gear (602) is meshed with the rack (503) for transmission.

5. The flying saw machine according to claim 1, characterized in that: A rotating sleeve (701) is fixedly connected and penetrated in the movable saw blade (7), and the rotating sleeve (701) is slidably matched with the transmission shaft (8). A swing frame (702) is movably inserted on one side of the rotating sleeve (701), and one end of the swing frame (702) is rotatably connected to the movable seat (6). A worm gear (703) is fixedly connected to the swing frame (702), and the worm gear (703) is meshed with the worm (601) for transmission. A positioning rod (704) is threadedly connected to the swing frame (702), and a limiting ring groove (705) is provided on the rotating sleeve (701). The inner end of the positioning rod (704) is slidably contacted with the inner wall of the limiting ring groove (705).

6. A flying saw machine according to claim 1, characterized in that: One end of the transmission shaft (8) passes through the adjustment frame (5) and is connected and fixedly provided with a motor B (801); the motor B (801) is connected and fixedly provided with the adjustment frame (5).

7. The flying saw machine according to claim 1, characterized in that: A mounting sleeve (901) is fixedly connected inside the fixed saw blade (9), the mounting sleeve (901) is slidably matched with the transmission shaft (8), and the mounting sleeve (901) is fixedly mounted on the transmission shaft (8) via bolts (902).

8. The flying saw machine according to claim 1, characterized in that: The saw blade maintenance mechanism (10) comprises an electric push rod (1001), one end of the electric push rod (1001) is connected and fixedly arranged with an adjustment frame (5), the other end of the electric push rod (1001) is connected and fixedly arranged with an adjustment seat (1002), a sliding frame (1003) is slidably arranged on the adjustment seat (1002), a grinding stone frame (1004) is arranged on one side of the sliding frame (1003), the grinding stone frame (1004) is arranged in frictional contact with the saw teeth of the movable saw blade (7) and the fixed saw blade (9), and two grinding stone frames (1004) are connected and fixedly arranged on the grinding stone frame (1004). A guide rod (1005) is provided, the guide rod (1005) is slidably matched with the sliding frame (1003), a plurality of springs (1006) are connected and fixedly provided between the grinding stone frame (1004) and the sliding frame (1003), a motor C (1007) is connected and fixedly provided on the adjustment seat (1002), a toggle rod (1008) is connected and fixedly provided at the output end of the motor C (1007), a slide groove (1009) is provided on the sliding frame (1003), and the inner wall of the slide groove (1009) is slidably contacted with the outer wall of the toggle rod (1008).

9. A servo follow-up fixed-length tracking method for a high-precision cold-cut flying saw machine, using a flying saw machine according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. When the flying saw machine is to be used, the movable saw blade (7) and the fixed saw blade (9) are first installed on the device, and then the transmission shaft (8) is used to drive the movable saw blade (7) and the fixed saw blade (9) to rotate and perform simultaneous cutting; S2. When the movable saw blade (7) is not needed, the movable base (6) is driven to move so that the movable saw blade (7) is removed from the transmission shaft (8) and rotated to one side and above without affecting the use of the fixed saw blade (9); S3. When the movable saw blade (7) and the fixed saw blade (9) need to be maintained, the movable saw blade (7) is first moved close to the fixed saw blade (9), and then the saw blade maintenance mechanism (10) is used to contact the saw teeth of the movable saw blade (7) close to the fixed saw blade (9), and the saw teeth of the movable saw blade (7) close to the fixed saw blade (9) are polished and maintained.

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