Large-scale dust-removing five-axis gantry machining center

Abstract

The utility model discloses a large -scale sealed dust removal five -axis gantry machining center, including mesa, stand base, bed leg stand, outer protective frame, protective door, dust absorption subassembly, dustproof ceiling subassembly, X axle subassembly, Y axle subassembly and Z axle subassembly. Stand base is established at mesa both sides and is fixed on the ground, and bed leg stand is connected with stand base. Outer protective frame and protective door constitute sealed structure. X axle subassembly is established on bed leg stand, and Y axle subassembly is on X axle subassembly, and Z axle subassembly is on Y axle subassembly. Dustproof ceiling subassembly is at Y axle subassembly both sides, and dust absorption subassembly contains dust removal pipe and dust absorption cover. Each axle subassembly realizes the movement through motor, guide rail pair etc.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing equipment technology, specifically to a large-scale sealed dust-removing five-axis gantry machining center. Background Technology

[0002] In the field of machining, gantry machining centers are widely used for processing large parts due to their high machining accuracy and efficiency. However, traditional gantry machining centers generate a large amount of dust and debris during the machining process. This dust not only pollutes the working environment and affects the health of operators, but may also enter the machine tool, affecting its normal operation and machining accuracy. At the same time, the motion components of each axis of a traditional gantry machining center are susceptible to corrosion from dust and debris during long-term operation, leading to a shortened service life and increased maintenance costs. To address the aforementioned issues, this invention proposes a large-scale sealed dust-removing five-axis gantry machining center. By incorporating a sophisticated sealing and dust removal structure, it effectively reduces the impact of dust on the machining environment and the machine tool itself, thereby improving machining quality and equipment stability. Summary of the Invention

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a large-scale sealed dust-removing five-axis gantry machining center, which solves the problems of severe dust pollution and easy dust corrosion during the traditional gantry machining process.

[0004] (II) Technical Solution To solve the above problems, this utility model provides the following technical solution: A large-scale sealed dust-removing five-axis gantry machining center includes a table, column base, bed legs, outer protective frame, protective door, dust collection assembly, dustproof canopy assembly, X-axis assembly, Y-axis assembly and Z-axis assembly; The column bases are located on both sides of the platform and are rigidly connected. The column bases and the platform are fixed together on the horizontal ground. The bed leg uprights are provided in two, symmetrically arranged on both sides of the platform, and rigidly connected to the two upright bases respectively. The outer protective frame is installed on both sides of the machine tool; The X-axis assembly has two components respectively disposed on the upper end faces of the two bed leg columns; the Y-axis assembly is disposed on the X-axis assembly; and the Z-axis assembly is disposed on the Y-axis assembly. The dustproof canopy assembly has two parts, which are respectively located on both sides of the Y-axis assembly; The Y-axis assembly includes a Y-axis beam connected to the X-axis assembly, a Y-axis slide body, a first Y-axis linear guide pair, a second set of second Y-axis linear guide pairs, a Y-axis motor, and a Y-axis rack. The first Y-axis linear guide pair is located on the upper end face of the Y-axis beam. The second Y-axis linear guide pairs are symmetrically arranged on the side of the Y-axis beam near the Z-axis assembly. The Y-axis slide body has an inverted L-shaped structure and is connected to the sliders on the first and second Y-axis linear guide pairs. The Y-axis motor is located on the Y-axis slide body, and its shaft is connected to the Y-axis rack through a gear-rack meshing connection. The dust collection assembly includes a dust collection pipe connected to the outside and a dust collection hood installed on the bed leg post. One end of the dust collection hood is connected through the dust collection pipe, and the dust collection pipe is located between the bed leg post and the outer protective frame. The dust inlet of the dust collection hood faces the table surface. The dustproof canopy assembly includes two canopy support frames rigidly connected to the two bed leg columns, a circular rail, a circular rail slider, a canopy beam, and a canopy fabric. The circular rail is provided on the upper end surface of the two canopy support frames. Both ends of the canopy beam are provided with a circular rail slider through a profile connecting plate, and the circular rail slider cooperates with the circular rail and can slide on the circular rail. The canopy fabric is provided at the lower part of the multiple canopy beams and is connected to the canopy beams. A canopy connection frame is provided on the side of the Y-axis beam away from the Z-axis assembly, and the canopy beam closest to the canopy connection frame is connected to the canopy connection frame. The Y-axis beam is provided with a second canopy connecting frame on the side closest to the Z-axis assembly. The canopy beam on the dustproof canopy assembly closest to the second canopy connecting frame is connected to the second canopy connecting frame.

[0005] Furthermore, each of the X-axis components includes an X-axis linear guide pair, an X-axis slide body, an X-axis motor, and an X-axis rack. The X-axis linear guide pair and the X-axis rack are both located on the upper end face of the bed leg column. The X-axis slide body is connected to the slider on the X-axis linear guide pair. The X-axis motor is located on the X-axis slide body, and the rotating shaft of the X-axis motor is connected to the X-axis rack through a gear meshing connection. The two X-axis sliders on the two X-axis assemblies are rigidly connected to both ends of the Y-axis beam, respectively.

[0006] Furthermore, the Z-axis assembly includes a Z-axis slide body, a set of Z-axis linear guide pairs, a Z-axis transmission lead screw pair, a Z-axis motor, and a set of Z-axis auxiliary cylinders. The set of Z-axis linear guide pairs is disposed on the side of the Z-axis slide body near the Y-axis slide body, and the slider on the Z-axis linear guide pairs is connected to the Y-axis slide body. The Z-axis transmission lead screw pair is disposed on the Z-axis slide body, and its lead screw nut seat is connected to the Y-axis slide body. The two Z-axis auxiliary cylinders are respectively disposed on both sides of the Z-axis slide body, and their cylinder bodies are connected to the Y-axis slide body through cylinder connecting seats, and their telescopic rods are connected to the Y-axis slide body through cylinder rod connectors.

[0007] Furthermore, the lower end of the Z-axis slider is provided with a five-axis head.

[0008] Furthermore, a straight-line tool magazine is provided on the lower end face of the Y-axis beam.

[0009] Furthermore, a dustproof accordion cover is provided on both the Y-axis crossbeam and the two bed leg columns.

[0010] Furthermore, multiple dust hoods are provided, and each dust hood is connected to the dust removal pipe.

[0011] The beneficial effects of this utility model are: 1. This utility model forms a comprehensive sealed protection through the setting of an outer protective frame, a protective door, a dustproof canopy component, and a dustproof bellows cover, which effectively prevents the leakage of dust during the processing and protects the working environment and the health of the operators. 2. Equipped with multiple dust collection hoods, it can absorb dust and, in conjunction with external dust removal equipment, greatly improves dust removal efficiency and reduces dust accumulation inside the machine tool. 3. The dustproof canopy assembly moves synchronously with the Y-axis beam, effectively covering the upper part of the machine tool with dust. The dustproof bellows cover protects key components such as the guide rails, reducing dust erosion of the equipment and extending its service life. Attached image description: Figure 1 This is a perspective view of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a schematic diagram of the internal structure of this utility model; Figure 4 This is a schematic diagram of the structure of the dust collection component of this utility model; Figure 5 This is a perspective view of the present invention from another angle; Figure 6 yes Figure 5 Enlarged view of point A in the middle; Figure 7 This is a structural schematic diagram of the X-axis assembly of this utility model; Figure 8 yes Figure 7 Enlarged view at point C; Figure 9 yes Figure 7 Enlarged view at point B in the middle; Figure 10 This is a schematic diagram of the structure of the Y-axis assembly and Z-axis assembly of this utility model. Figure 1 ; Figure 11 This is a schematic diagram of the structure of the Y-axis assembly and Z-axis assembly of this utility model. Figure 2 .

[0012] Markings in the diagram: 1-Tabletop, 2-Column base, 3-Leg column, 4-Outer protective frame, 5-Protective door, 6-Dust collection assembly, 7-Dustproof canopy assembly, 8-X-axis assembly, 9-Y-axis assembly, 10-Z-axis assembly, 11-Canopy connection frame one, 12-Canopy connection frame two, 13-Five-axis head, 14-Linear tool magazine, 15-Dustproof accordion cover; 601 - Dust hood, 602 - Dust removal pipe; 701-Ceiling support frame, 702-Round rail, 703-Round rail slider, 704-Ceiling crossbeam, 705-Ceiling fabric; 801 - X-axis linear guide pair, 802 - X-axis slide body, 803 - X-axis motor, 804 - X-axis rack; 901 - Y-axis crossbeam, 902 - Y-axis slide body, 903 - Y-axis linear guide pair one, 904 - Y-axis linear guide pair two, 905 - Y-axis motor, 906 - Y-axis rack; 1001 - Z-axis sliding body, 1002 - Z-axis linear guide pair, 1003 - Z-axis transmission screw pair, 1004 - Z-axis motor, 1005 - Z-axis auxiliary cylinder. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] Please see Figure 1 , Figure 3 , Figure 3 , Figure 10 and Figure 11 A large-scale sealed dust-removing five-axis gantry machining center includes a table 1, a column base 2, bed leg columns 3, an outer protective frame 4, a protective door 5, a dust collection assembly 6, a dustproof canopy assembly 7, an X-axis assembly 8, a Y-axis assembly 9, and a Z-axis assembly 10. The column base 2 is located on both sides of the platform 1 and is rigidly connected to ensure the stability of the connection. The column base 2 and the platform 1 are fixed together on the horizontal ground to ensure the installation stability of the entire equipment. Two bed leg uprights 3 are provided, symmetrically arranged on both sides of the platform 1, and rigidly connected to the two upright bases 2 respectively to ensure the stable support of the bed leg uprights 3.

[0016] The outer protective frame 4 is set on both sides of the machine tool. The protective door 5 can be connected to the outer protective frame 4 by sliding or hinge to facilitate the entry and exit of operators and the loading and unloading of workpieces. The outer protective frame 4 and the protective door 5 together constitute the external sealing structure of the machine tool, effectively preventing the leakage of dust during the processing. The X-axis assembly 8 has two components respectively disposed on the upper end faces of the two bed leg columns 3. The Y-axis assembly 9 is disposed on the X-axis assembly 8, and the Z-axis assembly 10 is disposed on the Y-axis assembly 9. The X-axis assembly 8 is used to drive the Y-axis assembly 9 and the Z-axis assembly 10 to move along the X-axis direction. The Y-axis assembly 9 is used to drive the Z-axis assembly 10 to move along the Y-axis direction. The Z-axis assembly 10 is used to drive the machining tool and other components to move along the Z-axis direction, thereby realizing multi-dimensional machining of the workpiece. The dustproof canopy assembly 7 has two sections, respectively located on both sides of the Y-axis assembly 9, used to prevent machining debris and other contaminants from entering the machine tool, while also preventing external dust from entering the machine tool. Please refer to [link / reference]. Figure 10 and Figure 11The Y-axis assembly 9 includes a Y-axis beam 901 connected to the X-axis assembly 8, a Y-axis slider 902, a first Y-axis linear guide pair 903, a second Y-axis linear guide pair 904, a Y-axis motor 905, and a Y-axis rack 906. The first Y-axis linear guide pair 903 is disposed on the upper end face of the Y-axis beam 901. The second Y-axis linear guide pair 904 is symmetrically disposed on the side of the Y-axis beam 901 near the Z-axis assembly 10. The Y-axis slider 902 has an inverted L-shaped structure, and the Y-axis slider 902 is aligned with the Y-axis linear guide pair 906. The sliders on the first guide rail 903 and the two second Y-axis linear guide rails 904 are connected. The first Y-axis linear guide rail 903 and the second Y-axis linear guide rail 904 provide guidance and support for the movement of the Y-axis slider 902, ensuring its smoothness and accuracy. The Y-axis motor 905 is mounted on the Y-axis slider 902, and its shaft is connected to the Y-axis rack 906 through a gear-rack meshing connection. When the Y-axis motor 905 is working, its shaft drives the gear to rotate, and the gear meshes with the Y-axis rack 906, thereby driving the Y-axis slider 902 to move along the Y-axis direction. Please see Figures 1 to 4 The dust collection assembly 6 includes a dust collection pipe 602 connected to the outside and a dust collection hood 601 mounted on the bed leg column 3. One end of the dust collection hood 601 is connected to the dust collection pipe 602, and the dust collection pipe 602 is located between the bed leg column 3 and the outer protective frame 4. The dust inlet of the dust collection hood 601 faces the table surface 1 to facilitate the suction of dust generated during processing into the dust collection hood 601, which is then transported to external dust collection equipment for treatment via the dust collection pipe 602. Please refer to [link / reference]. Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The dustproof canopy assembly 7 includes two canopy support frames 701 rigidly connected to the two bed leg columns 3 respectively, a circular rail 702, a circular rail slider 703, a canopy beam 704, and a canopy cloth 705. The circular rail 702 is provided on the upper end surface of the two canopy support frames 701. Both ends of the canopy beam 704 are provided with a circular rail slider 703 through a profile connecting plate, and the circular rail slider 703 cooperates with the circular rail 702 and can slide on the circular rail 702. The canopy cloth 705 is provided at the lower part of the multiple canopy beams 704 and is connected to the canopy beams 704. When the canopy beams 704 move, the canopy cloth 705 unfolds or retracts accordingly to achieve dustproof coverage of different areas. Please see Figure 5 , Figure 6 , Figure 7 and Figure 8A canopy connecting frame 11 is provided on the side of the Y-axis beam 901 away from the Z-axis assembly 10. The canopy beam 704 closest to the canopy connecting frame 11 is connected to the canopy connecting frame 11. When the Y-axis beam 901 moves, the corresponding canopy beam 704 moves through the canopy connecting frame 11, thereby achieving synchronous operation of the dustproof canopy assembly 7 on that side. A second canopy connecting frame 12 is provided on the side of the Y-axis beam 901 near the Z-axis assembly 10. The canopy beam 704 closest to the second canopy connecting frame 12 on the dustproof canopy assembly 7 near the Z-axis assembly 10 is connected to the second canopy connecting frame 12. Similarly, when the Y-axis beam 901 moves, the corresponding canopy beam 704 of the dustproof canopy assembly 7 on that side moves through the second canopy connecting frame 12, achieving synchronous operation. Please see Figure 7 and Figure 9 Each X-axis assembly 8 includes an X-axis linear guide pair 801, an X-axis slide body 802, an X-axis motor 803, and an X-axis rack 804. The X-axis linear guide pair 801 and the X-axis rack 804 are both located on the upper end face of the bed leg column 3. The X-axis slide body 802 is connected to a slider on the X-axis linear guide pair 801. The X-axis linear guide pair 801 provides guidance and support for the movement of the X-axis slide body 802. The X-axis motor 803 is located on the X-axis slide body 802, and the rotating shaft of the X-axis motor 803 is connected to the X-axis rack 804 through a gear-rack meshing connection. When the X-axis motor 803 is working, its rotating shaft drives the gear to rotate, and the gear meshes with the X-axis rack 804, thereby driving the X-axis slide body 802 to move along the X-axis direction. The two X-axis sliders 802 on the two X-axis assemblies 8 are rigidly connected to both ends of the Y-axis beam 901, so that the X-axis sliders 802 can drive the Y-axis beam 901 to move together along the X-axis direction. Please see Figure 10 and Figure 11The Z-axis assembly 10 includes a Z-axis slide body 1001, a set of Z-axis linear guide pairs 1002, a Z-axis transmission lead screw pair 1003, a Z-axis motor 1004, and a set of Z-axis auxiliary cylinders 1005. The set of Z-axis linear guide pairs 1002 is disposed on the side of the Z-axis slide body 1001 near the Y-axis slide body 902, and the slider on the Z-axis linear guide pair 1002 is connected to the Y-axis slide body 902. The Z-axis linear guide pair 1002 provides guidance and support for the movement of the Z-axis slide body 1001. The Z-axis transmission lead screw pair 1003 is disposed on the Z-axis slide body 1001, and its lead screw nut seat is connected to the Y-axis slide body 902. The Z-axis slide 1001 is connected to the Y-axis slide 902, and the Z-axis motor 1004 is connected to the lead screw of the Z-axis transmission lead screw pair 1003. When the Z-axis motor 1004 works, it drives the lead screw to rotate. The lead screw cooperates with the nut seat, thereby driving the Z-axis slide 1001 to move along the Z-axis direction. Two Z-axis auxiliary cylinders 1005 are respectively arranged on both sides of the Z-axis slide 1001, and their cylinder bodies are connected to the Y-axis slide 902 through cylinder connecting seats. Their telescopic rods are connected to the Y-axis slide 902 through cylinder rod connecting parts. The Z-axis auxiliary cylinders 1005 are used to assist the movement of the Z-axis slide 1001 and improve its movement stability and accuracy. The lower end of the Z-axis slide body 1001 is provided with a five-axis head 13, which is used to install machining tools and can realize multi-dimensional rotational motion to meet the machining requirements of complex workpieces. The lower end face of the Y-axis beam 901 is provided with a straight tool magazine 14, which is used to store a variety of machining tools, facilitating automatic tool changing during machining and improving machining efficiency. Please see Figures 1 to 3 Each of the Y-axis beam 901 and the two bed leg columns 3 is provided with a dustproof bellows cover 15. The dustproof bellows cover 15 is telescopic and can protect the guide rails and other components on the Y-axis beam 901 and the bed leg columns 3 from dust without affecting the movement of the components. Multiple dust collection hoods 601 are provided, and each dust collection hood 601 is connected to the dust removal pipe 602. Multiple dust collection hoods 601 can absorb dust generated during the processing from different positions, thereby improving the dust removal effect. Working principle: When this large, sealed, dust-removing five-axis gantry machining center is in operation, the workpiece to be processed is first fixed on the table 1, and the protective door 5 is closed, so that a relatively sealed space is formed inside the machine tool. During the machining process, the X-axis motor 803 operates, driving the X-axis slide 802 along the X-axis linear guide pair 801 via gear meshing with the X-axis rack 804, which in turn drives the Y-axis beam 901 and the components mounted on it to move along the X-axis direction. The Y-axis motor 905 operates, driving the Y-axis slide 902 along the Y-axis linear guide pair 1 903 and Y-axis linear guide pair 2 904 via gear meshing with the Y-axis rack 906, which in turn drives the Z-axis assembly 10 to move along the Y-axis direction. The Z-axis motor 1004 operates, driving the Z-axis slide 1001 along the Z-axis linear guide pair 1002 via the Z-axis transmission screw pair 1003, while the Z-axis auxiliary cylinder 1005 assists in its movement, achieving movement in the Z-axis direction. The five-axis head 13, with the coordination of the movements of each axis, drives the cutting tool to machine the workpiece. During processing, the dust collection component 6 operates simultaneously. External dust removal equipment generates negative pressure through the dust collection pipe 602, causing the dust collection hood 601 to suck in the dust generated during processing and transport it externally for treatment via the dust collection pipe 602. Simultaneously, the dustproof canopy component 7 unfolds or retracts with the movement of the Y-axis beam 901. The canopy cloth 705 covers the upper part of the machine tool for dust protection, while the dustproof bellows cover 15 protects the Y-axis beam 901 and the guide rails on the machine legs 3 from dust. The outer protective frame 4 and protective door 5 prevent dust leakage, collectively ensuring a clean processing environment and normal equipment operation. When tool changes are required, the linear tool magazine 14 enables automatic tool replacement, improving processing efficiency.

[0017] The embodiments are detailed, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0018] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A large-scale sealed dust-removing five-axis gantry machining center, characterized in that: Includes tabletop (1), column base (2), bed leg columns (3), outer protective frame (4), protective door (5), dust collection assembly (6), dustproof canopy assembly (7), X-axis assembly (8), Y-axis assembly (9) and Z-axis assembly (10); The column base (2) is provided on both sides of the platform (1), and the two are rigidly connected. The column base (2) and the platform (1) are fixed together on the horizontal ground. The bed leg uprights (3) are provided in two, symmetrically arranged on both sides of the table surface (1), and rigidly connected to the two upright bases (2) respectively. The outer protective frame (4) is set on both sides of the machine tool; The X-axis assembly (8) has two components respectively disposed on the upper end surfaces of the two bed leg columns (3), the Y-axis assembly (9) is disposed on the X-axis assembly (8), and the Z-axis assembly (10) is disposed on the Y-axis assembly (9); The dustproof canopy assembly (7) has two parts respectively located on both sides of the Y-axis assembly (9); The Y-axis assembly (9) includes a Y-axis beam (901) connected to the X-axis assembly (8), a Y-axis slide (902), a first Y-axis linear guide pair (903), a second Y-axis linear guide pair (904), a Y-axis motor (905), and a Y-axis rack (906). The first Y-axis linear guide pair (903) is located on the upper end face of the Y-axis beam (901), and the second Y-axis linear guide pair (904) is symmetrically arranged on the Y-axis beam (901). 901) On the side near the Z-axis assembly (10), the Y-axis slide body (902) has an inverted L-shaped structure, and the Y-axis slide body (902) is connected to the sliders on the first Y-axis linear guide pair (903) and the two second Y-axis linear guide pairs (904). The Y-axis motor (905) is mounted on the Y-axis slide body (902), and its shaft is connected to the Y-axis rack (906) by means of gear and rack meshing. The vacuum assembly (6) includes a dust removal pipe (602) connected to the outside and a vacuum hood (601) disposed on the bed leg post (3). One end of the vacuum hood (601) is connected to the dust removal pipe (602), and the dust removal pipe (602) is disposed between the bed leg post (3) and the outer protective frame (4). The dust inlet of the vacuum hood (601) is disposed facing the table surface (1). The dustproof canopy assembly (7) includes two canopy support frames (701) rigidly connected to the two bed leg columns (3) respectively, a circular rail (702), a circular rail slider (703), a canopy beam (704) and a canopy cloth (705). The circular rail (702) is provided on the upper end surface of the two canopy support frames (701). Both ends of the canopy beam (704) are provided with a circular rail slider (703) through a profile connecting plate. The circular rail slider (703) cooperates with the circular rail (702) and can slide on the circular rail (702). The canopy cloth (705) is provided at the lower part of the multiple canopy beams (704) and is connected to the canopy beams (704). The Y-axis beam (901) is provided with a ceiling connection frame (11) on the side away from the Z-axis assembly (10), and the ceiling beam (704) closest to the ceiling connection frame (11) is connected to the ceiling connection frame (11). The Y-axis beam (901) is provided with a second ceiling connection frame (12) on the side of the Z-axis assembly (10). The ceiling beam (704) on the dustproof ceiling assembly (7) near the Z-axis assembly (10) is connected to the second ceiling connection frame (12).

2. The large-scale sealed dust-removing five-axis gantry machining center according to claim 1, characterized in that: Each of the X-axis components (8) includes an X-axis linear guide pair (801), an X-axis slide body (802), an X-axis motor (803), and an X-axis rack (804). The X-axis linear guide pair (801) and the X-axis rack (804) are both located on the upper end face of the bed leg column (3). The X-axis slide body (802) is connected to the slider on the X-axis linear guide pair (801). The X-axis motor (803) is located on the X-axis slide body (802), and the shaft of the X-axis motor (803) is connected to the X-axis rack (804) by means of gear meshing with the rack. The two X-axis sliders (802) on the two X-axis assemblies (8) are rigidly connected to both ends of the Y-axis beam (901).

3. The large-scale sealed dust-removing five-axis gantry machining center according to claim 1, characterized in that: The Z-axis assembly (10) includes a Z-axis slide body (1001), a set of Z-axis linear guide pairs (1002), a Z-axis transmission lead screw pair (1003), a Z-axis motor (1004), and a set of Z-axis auxiliary cylinders (1005). The set of Z-axis linear guide pairs (1002) is disposed on the side of the Z-axis slide body (1001) near the Y-axis slide body (902), and the slider on the Z-axis linear guide pair (1002) is connected to the Y-axis slide body (902). The Z-axis slide body (902) is connected to the Z-axis slide body (1003), and the Z-axis transmission screw pair (1003) is set on the Z-axis slide body (1001). Its screw nut seat is connected to the Y-axis slide body (902). Two Z-axis auxiliary cylinders (1005) are respectively set on both sides of the Z-axis slide body (1001), and their cylinder bodies are connected to the Y-axis slide body (902) through cylinder connecting seats. Their telescopic rods are connected to the Y-axis slide body (902) through cylinder rod connectors.

4. A large-scale sealed dust-removing five-axis gantry machining center according to claim 3, characterized in that: The lower end of the Z-axis slider (1001) is provided with a five-axis head (13).

5. A large-scale sealed dust-removing five-axis gantry machining center according to claim 1, characterized in that: A straight-line tool magazine (14) is provided on the lower end face of the Y-axis beam (901).

6. A large-scale sealed dust-removing five-axis gantry machining center according to claim 1, characterized in that: A dustproof accordion cover (15) is provided on the Y-axis crossbeam (901) and the two bed leg columns (3).

7. A large-scale sealed dust-removing five-axis gantry machining center according to claim 1, characterized in that: Multiple dust collection hoods (601) are provided, and each dust collection hood (601) is connected to the dust removal pipe (602).

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