Numerical control gantry machine tool for multi-angle cutting

Abstract

The invention relates to the technical field of numerical control machine tools, in particular to a numerical control gantry machine tool for multi-angle cutting, which comprises a rack, a gantry body and a laser cutting facility, and further comprises a transverse moving facility for driving the laser cutting facility to horizontally move along the gantry body; when the portal frame body moves to a cutting area, the rolling wheels on the connecting plates on the two sides of the portal frame body can make contact with and press the movable blocks downwards, the movable blocks are forced to descend along the through grooves, then the corresponding grate bar frame bodies are driven to descend through the fixing plates, and transmission gears at the tail ends of the upper rotating rods are matched to roll along the surfaces of the racks; the grate bar frame is driven to rotate in the descending process, finally, the grate bar frame is converted into an inclined posture from a vertical supporting state, the side face but non-sawtooth-shaped top faces a cutting area and is far away from a cutting and burning area, a few grate bars directly located in a laser path can actively hide through the design, the sawtooth-shaped top is effectively prevented from being continuously burnt, and the cutting and burning efficiency is improved. Therefore, the service life is obviously prolonged.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, specifically to a CNC gantry milling machine for multi-angle cutting. Background Technology

[0002] The CNC gantry milling machine uses a laser beam as the processing tool. Through a CNC system, it precisely coordinates the longitudinal (Y-axis) movement of the crossbeam and the transverse (X-axis) movement of the slide, driving the cutting head to achieve multi-degree-of-freedom rotation (such as A and B axes). This enables high-precision cutting at any position and complex angles in three-dimensional space. During this process, the grate frame located below the machine tool serves as the core support component. It consists of parallel metal strips with a serrated design. Its main function is to support the sheet metal being processed while ensuring laser penetration and molten slag removal through the gaps between the strips, while also reducing heat conduction.

[0003] To achieve heat dissipation and minimize the contact area with the material, the top of the grate is usually designed or worn into a serrated shape. However, this makes it a weak point in the structure. During multi-angle laser cutting, when the cutting path inevitably passes over it, the high-energy laser beam will continuously burn these protrusions, which can easily cause deformation of the serrated top, leading to rapid wear of the grate. At the same time, the grooves between the serrations are very easy to retain slag and small debris generated during cutting. These high-temperature residues are not only difficult to clean and affect work efficiency, but they can also scratch the lower surface of the material or interfere with the laser focus in subsequent processing, ultimately affecting the cutting quality and process stability. Summary of the Invention

[0004] The purpose of this invention is to provide a CNC gantry milling machine for multi-angle cutting, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a CNC gantry milling machine for multi-angle cutting, comprising a frame, a gantry body, and laser cutting equipment, and further comprising: Lateral movement device, used to move the laser cutting device horizontally along the gantry frame body; The grate frame body, in several units, is not fixed to the frame; An avoidance mechanism is connected to the grate frame body and is used to provide the grate frame body with conditions for vertical movement; Two sets of downward triggering mechanisms are arranged on both sides of the gantry frame body. When the downward triggering mechanism comes into contact with the avoidance mechanism, the grate frame body descends. A spring force application and pneumatic buffer mechanism is used to provide spring force to the avoidance mechanism, so that the grate frame body remains vertical and at a high position under normal conditions. The micro-vibration mechanism is connected to the elastic force application and pneumatic buffer mechanism through a pipeline. When the grate frame body rises, the elastic force application and pneumatic buffer mechanism supplies air to the micro-vibration mechanism to generate vibration.

[0006] Preferably, the avoidance mechanism includes: Two sets of long plates are bolted to both sides of the frame surface; Several through slots are formed on the surface of the long plate; The movable block is slidably connected to the inner wall of the through groove, and the elastic force of the elastic force application and pneumatic buffer mechanism is applied to the surface of the movable block; The fixing plate is bolted to the main body of the grate frame; A rotating rod passes through the movable block and is rotatably connected to it at the point of penetration. A transmission gear is bolted to one end of the rotating rod; The rack meshes with the transmission gear.

[0007] Preferably, the upper half of the movable block is trapezoidal, and limit blocks are bolted to both sides of the movable block.

[0008] Preferably, the pressing trigger mechanism includes a connecting plate and a roller. The connecting plate is bolted to the side of the gantry frame body, the roller is rotatably connected to the surface of the connecting plate, and the roller is in contact with the surface of the long plate.

[0009] Preferably, the elastic force application and pneumatic buffer mechanism includes: The number of vertical cylinders is the same as the number of movable blocks. The vertical cylinders are bolted to the frame, and the rack is bolted to the top of the vertical cylinders. A sliding sleeve is provided through the top of the vertical cylinder; The piston is slidably connected to the inner wall of the vertical cylinder; The movable column is slidably connected to the inner wall of the sliding sleeve, and its two ends are respectively bolted to the movable block and the piston; An elastic force application component is disposed between the movable block and the vertical cylinder; An inlet pipe is connected to one side of the top of the vertical cylinder; The first unidirectional component is located inside the inlet tube and can only be opened towards the depth of the inlet tube; The outlet is connected to the other side of the top of the vertical cylinder, and the inner diameter of the outlet is smaller than the inner diameter of the inlet pipe; A second one-way component is disposed inside the outlet, and the second one-way component can only be opened in a direction away from the interior of the vertical cylinder.

[0010] Preferably, the first one-way component consists of a first cover and a first ring. The first ring is fixed to the inlet end of the inlet pipe, and the first cover is rotatably connected to the first ring. The second one-way component consists of a second ring and a second cover. The second ring is fixed inside the outlet, and the second cover is rotatably connected to the second ring. The inner diameter of the first ring is larger than that of the second ring. The first cover can only be opened towards the depth of the inlet pipe, and the second cover can only be opened towards the direction away from the interior of the vertical cylinder.

[0011] Preferably, the elastic force application assembly consists of a compression spring, a collar, and a circular plate. The collar is bolted to the top of the vertical cylinder and located on the periphery of the sliding sleeve. The circular plate is bolted to the surface of the movable column. One end of the compression spring is in contact with the circular plate, and the other end of the compression spring is located inside the collar.

[0012] Preferably, the micro-vibration mechanism includes: Hollow cylinders, in several quantities, are bolted to the underside of the surface of the grate frame body; Connecting pipes to link the multiple hollow cylinders to the outlet; A through hole is formed above the surface of the hollow cylinder; A metal ball is disposed inside the hollow cylinder.

[0013] Preferably, the inner diameter of the upper half of the hollow cylinder is larger than the inner diameter of the lower half, and the metal sphere is hollow and made of aluminum.

[0014] Preferably, the number of connecting plates and rollers on the same side is two or more sets.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, when the gantry frame moves to the cutting area, the rollers on its two side connecting plates contact and press down on the movable block, forcing the movable block to descend along the through groove. This, in turn, drives the corresponding grate frame body to descend through the fixed plate. Furthermore, the transmission gear at the end of the rotating rod rolls along the surface of the rack, causing the grate frame to rotate during the descent. Ultimately, this causes the grate frame to change from a vertical support state to an inclined posture, so that the side, rather than the serrated top, faces the cutting area and is away from the cutting and burning area. This design allows a few grate bars directly under the laser path to actively avoid the laser, effectively preventing the serrated top from being continuously burned, thus significantly extending its service life. Moreover, only a portion of the grate bars descends, so the overall support stability is not affected.

[0016] 2. In this invention, when the movable block is pressed down and drives the piston to descend, the upper space inside the vertical cylinder increases, creating a negative pressure. External air is drawn in through the inlet pipe after the first cover is opened. After cutting, the movable block and piston rise under the drive of the compression spring. At this time, the first cover closes, and the compressed air can only try to escape from the outlet. Due to the small inner diameter of the outlet and the presence of a second cover that can only be opened outward, the gas escape is obstructed, thus creating significant pneumatic damping during the piston's ascent. This damping effect effectively slows down the rising and resetting speed of the movable column, movable block, and grate frame body, avoiding impact damage to the upper plate or grate itself that may be caused by rapid resetting.

[0017] 3. In this invention, the compressed air discharged by the piston rises is introduced into several hollow cylinders below the grate frame body through the outlet and connecting pipes. The airflow blows the metal balls inside the hollow cylinders upward to the area with a larger inner diameter. During the movement, the metal balls will hit the inner wall of the hollow cylinders, and the slight vibration generated is transmitted through the hollow cylinders to the entire grate frame. This helps to shake off the slag and cutting debris attached to the side of the grate frame and the serrated grooves, thus realizing adaptive preliminary cleaning during the cutting process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure in this invention; Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A; Figure 3 This is a schematic diagram of the structure of the gantry frame body, the lateral movement device, and the laser cutting device in this invention; Figure 4 This is a partial structural diagram of the area between the two sets of long plates in this invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B; Figure 6 For the present invention Figure 4 Enlarged structural diagram at point C; Figure 7 This is a schematic diagram of the elastic force application and pneumatic buffer mechanism and the micro-vibration mechanism in this invention; Figure 8 This is a schematic diagram of the fixing plate and its surrounding structure in this invention; Figure 9 This is a cross-sectional view of the hollow cylinder in this invention; Figure 10 This is a cross-sectional view of the vertical cylinder in this invention; Figure 11 For the present invention Figure 10 Enlarged structural diagram at point D; Figure 12 This is a cross-sectional view of the inlet tube in this invention.

[0019] In the diagram: 100, frame; 200, gantry frame body; 300, lateral movement device; 400, laser cutting device; 500, downward triggering mechanism; 510, connecting plate; 520, roller; 600, grate frame body; 700, avoidance mechanism; 710, long plate; 720, through slot; 730, movable block; 731, limit block; 740, fixed plate; 750, rotating rod; 760, transmission gear; 770, rack; 800, elastic force application and pneumatic buffer mechanism; 810, piston. ; 820, Vertical cylinder; 830, Sliding sleeve; 840, Movable column; 850, Elastic force application component; 851, Compression spring; 852, Collar; 853, Circular plate; 860, Inlet pipe; 870, First one-way component; 871, First cover; 872, First ring; 880, Outlet; 890, Second one-way component; 891, Second ring; 892, Second cover; 900, Micro-vibration mechanism; 910, Connecting pipe; 920, Hollow cylinder; 930, Through hole; 940, Metal ball. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-12 As shown, a CNC gantry milling machine for multi-angle cutting includes a frame 100, a gantry body 200, and a laser cutting device 400. The machine also includes a transverse movement device 300, a grate frame body 600, an avoidance mechanism 700, a downward triggering mechanism 500, a spring force application and pneumatic buffer mechanism 800, and a micro-vibration mechanism 900. The transverse movement device 300 is used to drive the laser cutting device 400 to move horizontally along the gantry body 200. The gantry body 200 enables the laser cutting device 400 and the transverse movement device 300 to move back and forth. The laser cutting device 400 itself can be angle-adjusted. The frame 100, the gantry body 200, the laser cutting device 400, and the transverse movement device 300 are all existing technologies, and their specific working methods and structures will not be described in detail. There are several grate frame bodies 600, which are not fixed to the frame 100, allowing the grate frame bodies 600 to move.

[0022] The avoidance mechanism 700 is connected to the grate frame body 600 and provides conditions for the grate frame body 600 to move up and down. Specifically, the avoidance mechanism 700 includes a long plate 710, a through groove 720, a movable block 730, a fixed plate 740, a rotating rod 750, a transmission gear 760, and a rack 770. There are two sets of long plates 710, which are bolted to both sides of the surface of the frame 100. There are several through grooves 720, which are formed on the surface of the long plates 710. The movable block 730... The movable block 730 is slidably connected to the inner wall of the through groove 720. The elastic force of the spring application and pneumatic buffer mechanism 800 is applied to the surface of the movable block 730. The fixed plate 740 is bolted to the grate frame body 600. The rotating rod 750 passes through the movable block 730 and is rotatably connected to it at the through point. The transmission gear 760 is bolted to one end of the rotating rod 750. The rack 770 meshes with the transmission gear 760. This allows the movable block 730 to slide up and down along the inner wall of the through groove 720, providing conditions for up and down movement.

[0023] Two sets of downward triggering mechanisms 500 are set on both sides of the gantry frame body 200. When the downward triggering mechanism 500 contacts the avoidance mechanism 700, the grate frame body 600 descends. Specifically, the downward triggering mechanism 500 includes a connecting plate 510 and a roller 520. The connecting plate 510 is bolted to the side of the gantry frame body 200. The roller 520 is rotatably connected to the surface of the connecting plate 510 and contacts the surface of the long plate 710. The upper part of the movable block 730 is trapezoidal so that the roller 520 can move to the top of the movable block 730. Limiting blocks 731 are bolted to both sides of the movable block 730. There are two or more sets of connecting plates 510 and rollers 520 on the same side. When the roller 520 moves and contacts the trapezoidal surface of the movable block 730, it will drive the movable block 730, the rotating rod 750 and the grate frame body 600 to descend.

[0024] The elastic force application and pneumatic buffer mechanism 800 provides elastic force to the avoidance mechanism 700, keeping the grate frame body 600 vertical and at a high position under normal conditions. Specifically, the elastic force application and pneumatic buffer mechanism 800 includes a vertical cylinder 820, a sliding sleeve 830, a piston 810, a movable column 840, an elastic force application assembly 850, an inlet pipe 860, a first one-way assembly 870, an outlet 880, and a second one-way assembly 890. The number of vertical cylinders 820 is the same as the number of movable blocks 730. The vertical cylinders 820 are bolted to the frame 100. The rack 770 is bolted to the top of the vertical cylinder 820. The sliding sleeve 830 passes through the top of the vertical cylinder 820. The piston 810 is connected to the vertical cylinder 820. The inner wall of the sliding sleeve 830 is slidably connected to the inner wall of the movable column 840. Its two ends are respectively bolted to the movable block 730 and the piston 810. The elastic force application component 850 is disposed between the movable block 730 and the vertical cylinder 820. The inlet pipe 860 is connected to one side of the top of the vertical cylinder 820. The first one-way component 870 is located inside the inlet pipe 860 and can only be opened towards the depth of the inlet pipe 860. The outlet 880 is connected to the other side of the top of the vertical cylinder 820, and the inner diameter of the outlet 880 is smaller than the inner diameter of the inlet pipe 860. The second one-way component 890 is disposed inside the outlet 880 and can only be opened towards the direction away from the inside of the vertical cylinder 820.

[0025] Furthermore, the elastic application component 850 consists of a compression spring 851, a collar 852, and a circular plate 853. The collar 852 is bolted to the top of the vertical cylinder 820 and located on the periphery of the sliding sleeve 830. The circular plate 853 is bolted to the surface of the movable column 840. One end of the compression spring 851 is in contact with the circular plate 853, and the other end of the compression spring 851 is located inside the collar 852. The collar 852 prevents the compression spring 851 from shifting. When the movable block 730 is not under force, the force of the compression spring 851 acts on the surface of the movable column 840 through the circular plate 853, causing the movable block 730 and the movable column 840 to move upward, so that the limiting block 731 contacts the surface of the long plate 710. At this time, the top of the movable block 730 is above the surface of the long plate 710, and the top of the grate frame is at a high position and remains vertical, thus achieving the supporting function.

[0026] Furthermore, the first one-way component 870 is composed of a first cover 871 and a first ring 872. The first ring 872 is fixed to the inlet end of the inlet pipe 860, and the first cover 871 is rotatably connected to the first ring 872. The second one-way component 890 is composed of a second ring 891 and a second cover 892. The second ring 891 is fixed inside the outlet 880, and the second cover 892 is rotatably connected to the second ring 891. The inner diameter of the first ring 872 is larger than that of the second ring 891. The first cover 871 can only be opened towards the depth of the inlet pipe 860, and the second cover 892 can only be opened towards the direction away from the interior of the vertical cylinder 820.

[0027] The micro-vibration mechanism 900 is connected to the elastic application and pneumatic buffer mechanism 800 via a pipeline. When the grate frame body 600 rises, the elastic application and pneumatic buffer mechanism 800 supplies air to the micro-vibration mechanism 900 to generate vibration. Specifically, the micro-vibration mechanism 900 includes a hollow cylinder 920, a connecting pipeline 910, a through hole 930, and a metal ball 940. There are several hollow cylinders 920 and they are bolted to the lower surface of the grate frame body 600. The connecting pipeline 910 connects the multiple hollow cylinders 920 to the outlet 880. The through hole 930 is opened above the surface of the hollow cylinder 920. The metal ball 940 is disposed inside the hollow cylinder 920. The inner diameter of the upper half of the hollow cylinder 920 is larger than the inner diameter of the lower half. The metal ball 940 is hollow inside and made of aluminum.

[0028] Working Principle: During operation, the gantry frame body 200 moves to change the position of the laser cutting facility 400, bringing it closer to the area to be cut on the surface of the material being cut. Simultaneously, the gantry frame body 200 moves the connecting plate 510 and rollers 520 together. The rollers 520 move to the surface of the movable block 730, forcing the movable block 730 to descend. This causes the fixed plate 740 and rotating rod 750 on the surface to descend as well. At the same time, the transmission gear 760 travels along the surface of the rack 770, rotating the rotating rod 750 and the fixed plate 740. This causes the two or more sets of grate frame bodies 600 below the laser cutting facility 400 to descend, rotate, and tilt. The sides of the grate frame bodies 600 are aligned with the cutting area above, away from the underside of the material being cut and away from the burning area to avoid direct heat. During the cutting process, the serrated top of the grate frame bodies 600... Instead of being subjected to continuous burning, the side portion is replaced (burning of the side portion does not affect the support, while burning of the top serrations deforms the support; when a large area of ​​the serrations of multiple grate frames is burned, it will affect the support). This protects the serrated top of the grate frame body 600, extending its service life. Moreover, only 2 or 3 grate frame bodies 600 near the cutting area are lowered, so the stability of the support for the cut plate is not affected. After the cutting of this area is completed, the gantry frame body 200 drives the laser cutting facility 400 to move to the next area for cutting. At this time, the roller 520 is removed, and the previously pressed movable block 730 rises under the action of the compression spring 851. The movable column 840 also rises simultaneously, causing the movable block 730 to rise again above the inner wall of the through groove 720. The corresponding grate frame body 600 also rises and remains vertical, restoring support to the bottom of the plate.

[0029] When the piston 810 is not moving, under the action of gravity, the first cover 871 is attached to the surface of the first ring 872, and the second cover 892 is attached to the surface of the second ring 891.

[0030] As the movable block 730 descends, it drives the lower movable column 840 to descend, which in turn causes the piston 810 to descend. This increases the space above the interior of the vertical cylinder 820, reducing the internal pressure. External air enters the vertical cylinder 820 through the inlet pipe 860 and pushes open the first cover 871, while the second cover 892 remains tightly closed. At this time, there is a large amount of air above the interior of the vertical cylinder 820. During the cutting process, the piston 810 remains stationary, and the air pressure area above the interior of the vertical cylinder 820 is stable. The air cannot escape from the inlet pipe 860, nor can it directly push open the second cover 892 to escape from the outlet 880. After the area processing is completed, the gantry frame body 200... The upper roller 520 moves away, and the movable block 730 and movable column 840 rise again, which in turn drives the piston 810 to rise. At this time, the space above the vertical cylinder 820 decreases, the internal gas is compressed, and the gas cannot push open the first cover 871 and be discharged from the inlet pipe 860. The gas pushes open the second cover 892. At this time, due to the small inner diameter of the outlet 880 and the second ring 891, the internal gas can only be discharged slowly, which brings resistance to the rise of the piston 810, thus causing the movable column 840, piston 810 and movable block 730 to rise slowly, and causing the grate frame body 600 to rise and reset slowly, preventing excessive speed from damaging the bottom of the plate still on the machine tool and its own serrations.

[0031] As the piston 810 rises, it pushes the air that previously entered the vertical cylinder 820 through the second annulus 891, outlet 880, and connecting pipe 910 into the hollow cylinder 920. This propels the metal ball 940 towards a position slightly larger than the inner diameter of the hollow cylinder 920. The air passes through the gap between the metal ball 940 and the inner wall of the hollow cylinder 920 and is discharged through the through hole 930. Simultaneously, as the grate frame body 600 and the movable block 730 rise, they drive the transmission gear 760 to move upwards along the surface of the rack 770, thereby causing the... During the ascent and resetting process, the body rotates and tends to be vertical. When the side faces upward, the molten slag and small debris fall off. The metal ball 940, blown by the air, can hit the inner wall of the hollow cylinder 920, generating a slight vibration that is transmitted to the surface of the grate frame body 600. This makes it easier for the molten slag and small debris to fall off, completing a simple cleaning and preventing a large amount of molten slag and small debris from remaining in the gaps between the serrations on the surface of the grate frame body 600. This continues until the grate frame body 600 completes its ascent and resetting process, at which point the piston 810 stops rising and no longer compresses the air inside the vertical cylinder 820.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-angle cutting numerical control gantry machine tool, comprising a rack (100), a gantry body (200) and a laser cutting facility (400), characterized in that, Also include: Transverse moving device (300) for driving the laser cutting device (400) to move horizontally along the gantry body (200); Grate frame body (600), a plurality of, with the rack (100) is not fixed; Avoidance mechanism (700), with the grate frame body (600) is connected to each other, for the grate frame body (600) to provide the conditions of up and down movement; Down trigger mechanism (500), two groups are arranged on both sides of the gantry body (200), the down trigger mechanism (500) and avoidance mechanism (700) contact grate frame body (600) down; Elastic force exertion and pneumatic buffer mechanism (800), for providing the elastic force to the avoidance mechanism (700), in the normal state, the grate frame body (600) is kept vertical and in high place; Micro vibration mechanism (900), with the elastic force exertion and pneumatic buffer mechanism (800) through the pipeline connection, when the grate frame body (600) rises, the elastic force exertion and pneumatic buffer mechanism (800) to the micro vibration mechanism (900) gas supply to produce vibration.

2. The multi-angle cutting numerical control gantry machine tool according to claim 1, characterized in that, The avoidance mechanism (700) includes: Long plate (710), two groups and bolted to the surface of the rack (100) on both sides; Groove (720), a plurality of and set up in the surface of the long plate (710); Movable block (730), with the inner wall of the groove (720) is connected, the elastic force exertion and pneumatic buffer mechanism (800) of the surface of the movable block (730); Fixed plate (740), with the grate frame body (600) is connected to each other; Rotating rod (750), through the movable block (730) and with its through place rotation connection; Transmission gear (760), bolted to one end of the rotating rod (750); Rack (770), with the transmission gear (760) is meshed with each other.

3. The multi-angle cutting numerical control gantry machine tool according to claim 2, characterized in that: The upper half of the movable block (730) is trapezoidal design, both sides of the movable block (730) are bolted to the limit block (731).

4. The multi-angle cutting numerical control gantry machine tool according to claim 2, characterized in that: The down trigger mechanism (500) includes connecting plate (510) and roller (520), the connecting plate (510) and the side of the gantry body (200) are connected to each other, the roller (520) and the surface of the connecting plate (510) rotation connection, and the roller (520) and the surface of the long plate (710) are in contact with each other.

5. The multi-angle cutting numerical control gantry machine tool according to claim 2, wherein, The elastic force exertion and pneumatic buffer mechanism (800) includes: Vertical cylinder (820), the same as the number of the movable block (730), the vertical cylinder (820) and the rack (100) are connected to each other, the rack (770) is bolted to the top of the vertical cylinder (820); Slip sleeve (830), through the top of the vertical cylinder (820) is arranged; Piston (810), with the inner wall of the vertical cylinder (820) is connected; Movable column (840), with the inner wall of the slip sleeve (830) is connected, both ends are bolted to the movable block (730) and the piston (810) respectively; A resilient force applying assembly (850) is arranged between the movable block (730) and the vertical cylinder (820); An inlet pipe (860) is arranged on one side of the top of the vertical cylinder (820); A first one-way assembly (870) is arranged inside the inlet pipe (860) and can only open towards the depth of the inlet pipe (860); An outlet (880) is arranged on the other side of the top of the vertical cylinder (820) and the inner diameter of the outlet (880) is smaller than that of the inlet pipe (860); A second one-way assembly (890) is arranged inside the outlet (880) and can only open away from the inside of the vertical cylinder (820).

6. The multi-angle cutting numerical control gantry machine tool according to claim 5, characterized in that: The first one-way assembly (870) is composed of a first cover (871) and a first ring (872), the first ring (872) is fixed to the inlet end of the inlet pipe (860), the first cover (871) is rotationally connected with the first ring (872), the second one-way assembly (890) is composed of a second ring (891) and a second cover (892), the second ring (891) is fixed inside the outlet (880), the second cover (892) is rotationally connected with the second ring (891), the inner diameter of the first ring (872) is larger than that of the second ring (891), the first cover (871) can only open towards the depth of the inlet pipe (860), and the second cover (892) can only open away from the inside of the vertical cylinder (820).

7. The multi-angle cutting numerical control gantry machine tool according to claim 5, characterized in that: The resilient force applying assembly (850) is composed of a compression spring (851), a sleeve ring (852) and a circular plate (853), the sleeve ring (852) is bolted to the top of the vertical cylinder (820) and located outside the sliding sleeve (830), the circular plate (853) is bolted to the surface of the movable column (840), one end of the compression spring (851) is in contact with the circular plate (853), and the other end of the compression spring (851) is located inside the sleeve ring (852).

8. The multi-angle cutting numerical control gantry machine tool according to claim 5, wherein, The micro-vibration mechanism (900) comprises: A plurality of hollow cylinders (920) are bolted to the lower surface of the grate frame body (600); A connecting pipe (910) connects the plurality of hollow cylinders (920) and the outlet (880); A through hole (930) is arranged on the upper surface of the hollow cylinder (920); A metal ball (940) is arranged inside the hollow cylinder (920).

9. The multi-angle cutting numerical control gantry machine tool according to claim 8, characterized in that: The inner diameter of the upper half of the hollow cylinder (920) is larger than that of the lower half, and the metal ball (940) is hollow and made of aluminum.

10. The multi-angle cutting numerical control gantry machine tool according to claim 4, characterized in that: The number of the connecting plates (510) and the rollers (520) on the same side is two or more.

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