Totally-enclosed five-axis numerical control machining center and its tool magazine

Abstract

The application discloses a fully-closed five-axis numerical control machining center, and relates to the technical field of numerical control machining.The fully-closed five-axis numerical control machining center comprises a crossbeam, a five-axis linkage machining mechanism, a machining table and a driving mechanism for driving the five-axis linkage machining mechanism.The five-axis linkage machining mechanism is installed on the crossbeam, the crossbeam is installed on left and right bridge beams, double-track sliding rails are arranged on the upper portions of the left and right bridge beams, a rack is arranged between the double-track sliding rails, the rack is arranged in cooperation with a crossbeam driving mechanism, and the crossbeam driving mechanism is used for driving the crossbeam to move along the Y-axis direction.Meanwhile, a dust blocking mechanism and a dust removal and chip removal system are arranged.The application further discloses a tool magazine matched with the fully-closed five-axis numerical control machining center, and the tool magazine is a hidden tool magazine.The application adopts a closed structure design, can effectively inhibit dust overflow generated in a machining process, effectively avoids the influence of dust and chips on machining precision, and simultaneously adopts the hidden tool magazine, cuts off the contact between dust and tools, and improves tool machining precision and service life.

Description

Technical Field

[0001] This invention relates to the field of CNC machining technology, and in particular to a fully enclosed five-axis CNC machining center, as well as a tool magazine applied to a fully enclosed five-axis CNC machining center. Background Technology

[0002] Five-axis linkage machining technology mainly refers to a machine tool with five coordinate axes, including three linear coordinates and two rotary coordinates. The CNC system controls the coordinates to move simultaneously and in a coordinated manner according to important functional relationships. The five axes can simultaneously interpolate to process workpieces or parts. It is applicable to industries such as mechanical parts, mold manufacturing, new energy vehicles, aerospace, rail transportation, shipbuilding, and petrochemicals. It can realize the processing of planes, curved surfaces, inclined surfaces, inclined holes, two-dimensional curved surfaces, three-dimensional curved surfaces, and the interior of part cavities. It has the ability to assemble and position the workpiece blank at one time and realize five-axis linkage milling, drilling, sawing, and cutting functions in all directions of five-dimensional space.

[0003] A five-axis CNC machining center mainly consists of a spindle assembly, a feed mechanism, and a CNC system. Machining centers are typically equipped with a tool magazine for automatic tool changing. After a workpiece is clamped once, it automatically and continuously completes multiple machining operations, such as milling. If the machining center has an automatic indexing rotary table, it can also automatically complete the machining of multiple surfaces and multiple operations on a single clamping. Therefore, in addition to machining various complex curved surfaces, machining centers are very suitable for machining various complex parts. Machining centers are classified according to their layout, mainly including vertical machining centers, horizontal machining centers, gantry machining centers, and composite machining centers.

[0004] Currently, five-axis linkage CNC machining technology is widely used in high-end manufacturing industries such as aerospace, weaponry, and shipbuilding.

[0005] High-end manufacturing places high demands on CNC machining centers and their processing environment. Machining centers operate under complex conditions, generating significant amounts of dust and debris during processing. This dust and debris not only affect the machining accuracy of product parts but also impact the workshop environment and the health of workers. Currently, most CNC machining centers reduce the environmental impact of dust and debris by installing protective covers or barriers. Larger CNC machining centers often employ a semi-enclosed approach, typically using barriers around the machining equipment. While this method provides some dust prevention, its dust removal efficiency is poor. Therefore, existing five-axis CNC machining centers require structural optimization and improvement in terms of dust prevention and removal.

[0006] In addition, five-axis machining centers are equipped with tool magazines. Currently, most existing tool magazines use disc tool holders, with the tool heads mounted on tool head fixtures set around the circumference of the disc tool holder. Due to the limited space around the disc, if dozens of tools are installed, the size of the disc tool holder will be relatively large, especially when machining large or complex structural products or workpieces, which poses a problem of occupying a lot of space. Summary of the Invention

[0007] The purpose of this invention is to provide a fully enclosed five-axis CNC machining center, which realizes enclosed machining, suppresses dust during machining, increases the number of tools that can be installed and the convenience of tool replacement, and improves the machining accuracy and service life of the tools.

[0008] In one aspect of this application, a fully enclosed five-axis CNC machining center is provided, including a five-axis linkage machining mechanism and a drive mechanism for driving the five-axis linkage machining mechanism to move in different coordinate axis directions; a dust blocking mechanism and a dust removal and chip removal system configured in conjunction with the dust blocking mechanism.

[0009] The machining table is set up in accordance with the five-axis linkage machining mechanism. The machining table is used to clamp and fix the workpiece to be clamped, and is generally used in conjunction with clamping fixtures.

[0010] A dust-blocking mechanism to prevent dust from overflowing, and a dust removal and chip removal system to collect dust. The dust-blocking mechanism and the dust removal and chip removal system are set together to achieve dust collection and cleaning.

[0011] The five-axis linkage machining mechanism is installed on the crossbeam. The left and right bridges are set at the two ends of the crossbeam respectively. The crossbeam is installed on the left and right bridges. Under the drive of the drive mechanism, the crossbeam can slide relative to the left and right bridges in the Y-axis direction to complete the longitudinal machining operation of the five-axis linkage machining mechanism.

[0012] Both the left and right bridges are equipped with longitudinal slide rails. The slide rails on the left and right bridges are double-track slide rails. A rack is installed between the double-track slide rails on the left and right sides. The rack is configured to cooperate with the crossbeam drive mechanism to realize the movement of the crossbeam in the Y-axis direction.

[0013] The drive mechanism between the crossbeam and the left and right bridges consists of a motor and a gear pair. During operation, the motor drives the gear to rotate and move along the upper rack of the left and right bridges, while simultaneously moving the crossbeam along the length of the left and right bridges.

[0014] An X-axis slide and a Z-axis slide are set between the five-axis linkage machining mechanism and the crossbeam. The Z-axis slide is slidably mounted on the X-axis slide. The Z-axis slide can slide along the X-axis transverse direction with the X-axis slide, and can also move up and down along the Z-axis direction of the Z-axis slide under the drive of the Z-axis drive structure, so as to realize the machining operation of the five-axis linkage machining mechanism in the Z-axis direction.

[0015] The five-axis linkage machining mechanism is mounted on the crossbeam via an X-axis slide. Driven by the transverse drive structure, the five-axis linkage machining mechanism slides left and right in the X-axis direction to realize machining operations in the X-axis direction.

[0016] Dust control mechanism

[0017] The left and right bridges enclose the processing area. When the five-axis linkage processing mechanism is working, it operates along the X, Y, and Z axes in the processing area. Front and rear door stops are set at both ends of the processing area on the left and right bridges. The rear door stop is normally closed and is closed during processing. When the machine is stopped, it is open.

[0018] To achieve effective dust blocking, dust-blocking panels are installed on the upper parts of the left and right bridge sections and the front and rear door stops. Each dust-blocking panel consists of multiple foldable panels, with adjacent panels connected to each other via connectors or multiple panels linked together by rods. A set of dust-blocking panels is installed on both the front and rear sides of the crossbeam. These panels cover the upper parts of the left and right bridge sections and the front and rear door stops. The side of each dust-blocking panel closest to the crossbeam is connected to the crossbeam via connectors.

[0019] When the crossbeam moves to the front door stop side, the dust baffle assembly located on the rear side of the crossbeam moves to the front door stop side, and the dust baffle changes from a folded state to an unfolded or flat state; conversely, when the crossbeam moves to the rear door stop side, the dust baffle on the front door stop side folds, and the dust baffle on the rear door stop side folds.

[0020] Slides are made on the inner walls of the left and right bridges, facing each other along their length.

[0021] The dust baffle is inserted into the sliding grooves set on the inner side of the left and right bridges at both ends, and the dust baffle can slide back and forth along the sliding grooves on the inner side of the left and right bridges;

[0022] The dust baffle is a composite structure with a hollow interior, including an upper dust baffle and a lower dust baffle. The hollow interior is provided with a sandwich panel, and air holes are distributed from the center to the outside on the sandwich panel. The size of the air holes in the middle part of the sandwich panel is different from the size of the air holes distributed on both sides. The diameter of the air holes in the middle region is larger than the diameter of the air holes on both sides.

[0023] The dust baffle plate corresponding to the sandwich panel has air holes. The air holes on both sides of the dust baffle plate correspond one-to-one with the air holes on the center of both sides of the sandwich panel, but the hole diameter is smaller than that of the air holes on both sides of the sandwich panel. The air hole in the middle of the dust baffle plate has the same hole diameter as that of the sandwich panel, but the corresponding air hole positions are misaligned. The air hole in the center of the dust baffle plate is an obliquely offset hole that is offset to both sides of the dust baffle plate.

[0024] Dust removal and chip removal system

[0025] Between the left and right bridges, double-chain plate chip conveyors are installed on both sides of the work platform. Corresponding to the double-chain plate chip conveyors, chip bins are set up. Each chip bin is equipped with a chip removal channel. Multiple chip removal channels are set up and distributed at the bottom of the left and right bridges. The discharge channels are connected to chip removal pipes. The chip removal pipes are distributed on both sides of the left and right bridges and are connected to a dust removal and chip removal system. The dust removal and chip removal system uses a cyclone separator. The gas treated by the cyclone separator is discharged into the atmosphere.

[0026] Tool magazine

[0027] The tool magazine is installed on either the left or right side of the bridge, and the tool magazine is a concealed tool magazine.

[0028] The tool magazine is a disc tool magazine. Multiple tool clamping devices are installed on the disc of the disc tool magazine along its circumference. Multiple radial slide rails are arranged on the disc surface of the disc tool magazine along its circumference. The radial slide rails are distributed in a circular array. Tool holders are set on the radial slide rails. The tool holders include a base and a column. The base is slidably installed on the radial slide rails. A tool disc is set on the upper part of the column. Tools are installed on the tool disc. The tool disc is a rotary tool disc.

[0029] The disc tool magazine is installed on the transverse slide rail. The disc of the disc tool magazine is connected to the protective door through a connector. Driven by the drive mechanism, the disc tool magazine can slide along the transverse slide rail. When it moves towards the machining table, the protective door is pushed open, and the disc tool magazine rotates to the corresponding tool position for tool replacement.

[0030] The beneficial effects of this invention are:

[0031] 1. This application adopts a closed structure design. Through the combination of left and right bridges, front door stop and rear door stop and the dust baffle set at the top, the dust overflow generated during the processing can be effectively suppressed, and the impact of dust and debris on the processing accuracy can be effectively avoided.

[0032] 2. The dust baffles in this application are composed of a composite sandwich structure. Both the sandwich panel and the lower dust baffle are provided with air holes. Through the optimized structural design, the dust suppression effect is achieved, while facilitating the collection and treatment of dust and debris.

[0033] 3. The tool magazine in this application adopts a concealed design, which can cut off the contact between dust and the tool, avoid tool contamination, and extend the tool's service life. At the same time, the tool magazine's structure has been optimized by adding a retractable rotary tool head, improving the performance of the five-axis CNC machining center.

[0034] 4. This application realizes closed processing, which can not only suppress dust flying during processing, but also increase the number of tools installed and the processing accuracy, facilitate replacement, and improve the overall performance of the equipment. Attached Figure Description

[0035] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0036] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0037] Figure 2 This is the front view of the present invention; {

[0038] Figure 3 This is a side view of the present invention;

[0039] Figure 4 This is a schematic diagram of the installation structure of the five-axis linkage machining mechanism and dust baffle assembly in this invention;

[0040] Figure 5 for Figure 4 Side view;

[0041] Figure 6 This is a schematic diagram of the dust baffle structure;

[0042] Figure 7 This is a structural diagram of the sandwich panel in this invention;

[0043] Figure 8 This is a schematic diagram of the lower dust baffle mechanism in this invention;

[0044] Figure 9 This is a partial structural diagram of the tool magazine;

[0045] Figure 10 This is a top view of the disc tool magazine;

[0046] Figure 11 Side view of the disc tool magazine after the radial slide rails and rotary tool head are installed on the upper part;

[0047] Figure 12 A 3D view of the radial guide rail and rotary cutter head assembly after installation;

[0048] Figure 13 Top view of the connection between the disc tool magazine and the protective door;

[0049] The numbers in the diagram are as follows:

[0050] 1. Five-axis linkage machining mechanism; 2. Drive mechanism; 3. Machining table; 4. Dust control mechanism; 5. Dust and chip removal system; 6. Crossbeam; 7. Left bridge; 8. Right bridge; 9. Longitudinal slide rail; 10. Rack; 11. X-axis slide block; 12. Z-axis slide block; 13. Front door stop; 14. Rear door stop; 15. Dust baffle assembly; 151. Dust baffle; 1511. Lower dust baffle; 1512. Upper dust baffle; 1513. Sandwich plate; 1514. Air hole; 1515. Oblique offset hole; 16. Slide groove; 17. Double chain plate chip conveyor; 18. Chip bin; 181. Chip discharge channel; 19. Chip discharge pipe; 20. Tool magazine; 201. Tool clamping device; 202. Radial slide rail; 203. Tool holder; 2031. Base; 2032. Column; 204. Tool disc; 21. Protective door; 22. Transverse slide rail. Detailed Implementation

[0051] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the scope of this application or its application or use. This application may be implemented in other different forms and is not limited to the embodiments described herein.

[0052] These embodiments are provided to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0053] The terms "first," "second," and similar terms used in this application do not indicate any order. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0054] In this application, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may not be directly connected to the other devices but may have an intermediary device.

[0055] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0056] The main application scenarios of this application are mechanical parts, mold manufacturing, new energy vehicles, aerospace, rail transportation, shipbuilding, petrochemical and other fields based on five-axis CNC machining centers. It can also be applied to other scenarios such as two-axis linkage, two-and-a-half-axis linkage, three-axis linkage, four-axis linkage CNC machining centers, or other equivalent scenarios, depending on its functions. The application scenarios are not constrained or limited by the specific embodiments described in this application.

[0057] Example 1

[0058] The following section uses a five-axis machining center as an example to provide a detailed explanation of the fully enclosed five-axis CNC machining center in this application:

[0059] I. Five-axis linkage machining mechanism

[0060] based on Figures 1-5 As shown, a fully enclosed five-axis CNC machining center includes a five-axis linkage machining mechanism 1 and a drive mechanism 2 that drives the five-axis linkage machining mechanism 1 to move in different coordinate axis directions.

[0061] The machining table 3 is set up in accordance with the five-axis linkage machining mechanism 1. The machining table 3 is used to clamp and fix the workpiece to be clamped, and is generally used in conjunction with clamping fixtures.

[0062] The dust-blocking mechanism 4 is used to prevent dust from overflowing, and the dust removal and chip removal system 5 is used to collect dust. The dust-blocking mechanism 4 and the dust removal and chip removal system 5 are set together to achieve dust collection and cleaning.

[0063] The five-axis linkage machining mechanism 1 is installed on the crossbeam 6. The two ends of the crossbeam 6 are respectively provided with the left bridge 7 and the right bridge 8. The crossbeam 6 is installed on the left and right bridges. Under the drive of the drive mechanism 2, the crossbeam 6 can slide relative to the left and right bridges 8 in the Y-axis direction to complete the longitudinal machining operation of the five-axis linkage machining mechanism 1.

[0064] Both the left and right bridges are equipped with longitudinal slide rails 9. The longitudinal slide rails 9 on the left bridge 7 and the right bridge 8 are double track slide rails. A rack 10 is set between the double track slide rails on the left and right sides. The rack 10 is set in cooperation with the drive mechanism 2 of the crossbeam 6 to realize the movement of the crossbeam in the Y-axis direction.

[0065] The drive mechanism 2 between the crossbeam 6 and the left and right bridges consists of a motor and a gear pair. During operation, the motor drives the gear to rotate and move along the upper rack 10 of the left bridge 7 and the right bridge 8, while simultaneously moving the crossbeam 6 along the length of the left and right bridges.

[0066] An X-axis slide 11 and a Z-axis slide 12 are provided between the five-axis linkage machining mechanism 1 and the crossbeam 6. The Z-axis slide 12 is slidably mounted on the X-axis slide 11. The Z-axis slide 12 can slide along the X-axis transverse direction with the X-axis slide 11, and can also move up and down along the Z-axis direction under the drive of the Z-axis drive structure, so as to realize the machining operation of the five-axis linkage machining mechanism 1 in the Z-axis direction.

[0067] The five-axis linkage machining mechanism 1 is mounted on the crossbeam 6 via the X-axis slide 11. Driven by the transverse drive structure, the five-axis linkage machining mechanism 1 slides left and right in the X-axis direction to realize the machining operation in the X-axis direction.

[0068] II. Dust-blocking mechanism

[0069] like Figure 1 , Figure 4 As shown, the left and right bridges enclose the processing area. When the five-axis linkage processing mechanism 1 is working, it operates in the processing area along the X-axis, Y-axis and Z-axis directions. A front door stop 13 and a rear door stop 14 are set at both ends of the processing area of ​​the left and right bridges. The rear door stop 14 is a normally closed door stop. The rear door stop 14 is closed during processing and open when the machine is stopped.

[0070] To achieve effective dust blocking, dust baffle assemblies 15 are installed on the upper parts of the left and right bridges and the front and rear door stops 14. Each dust baffle assembly 15 consists of multiple foldable dust baffles. Two adjacent dust baffles 151 are connected to each other by connectors, or multiple dust baffles 151 can be connected in series by connecting rods. A set of dust baffle assemblies 15 is installed on both the front and rear sides of the crossbeam 6. The dust baffles installed on both sides of the crossbeam 6 cover the upper parts of the left and right bridges and the front and rear door stops 14. The side of the dust baffle assembly 15 closest to the crossbeam 6 is connected to the crossbeam 6 by connectors.

[0071] When the crossbeam 6 moves to the side of the front door stop 13, the dust baffle 151 on the rear side of the crossbeam 6 moves to the side of the front door stop 13, and the dust baffle 151 changes from a folded state to an unfolded or flat state; conversely, when the crossbeam 6 moves to the side of the rear door stop, the dust baffle 151 on the side of the front door stop 13 is folded, and the dust baffle 151 on the side of the rear door stop 14 is folded.

[0072] Slide grooves 16 are opened in opposite directions along the length of the inner sidewalls of the left and right bridges;

[0073] like Figure 1 , Figure 4 As shown, the dust baffle 151 is inserted into the sliding grooves 16 provided on the inner sides of the left and right bridges at both ends, and the dust baffle 151 can slide back and forth along the sliding grooves 16 on the inner sides of the left and right bridges.

[0074] like Figure 6 , Figure 7As shown, the dust baffle 151 is a composite structure with a hollow interior, including an upper dust baffle 1512 and a lower dust baffle 1511. The hollow interior is provided with a sandwich panel 1513. Air holes 1514 are distributed on the sandwich panel 1513 from the center to the outside. The size of the air holes 1514 in the middle part of the sandwich panel is different from the size of the air holes 1514 distributed on both sides. The radius of the air holes 1514 in the middle region is larger, while the radius of the air holes 1514 on both sides is smaller than the diameter of the middle air hole 1514.

[0075] like Figure 8 As shown, corresponding to the sandwich panel 1513, the lower dust baffle 1511 is provided with air holes 1514 corresponding to the sandwich panel 1513. The air holes 1514 provided on the lower dust baffle (1511) are provided one-to-one with the air holes 1514 provided on the center of both sides of the sandwich panel 1513, but the hole diameter is smaller than the hole diameter of the air holes 1514 provided on both sides of the sandwich panel 1513. The hole diameter of the air hole 1514 provided in the middle of the lower dust baffle 1511 is the same as the hole diameter provided in the sandwich panel 1513, but the position of the corresponding air hole 1514 is misaligned, and the air hole 1514 provided in the center of the lower dust baffle 1511 is an oblique offset hole 1515 offset to both sides of the dust baffle 151.

[0076] This design changes the large air vents 1514 on both sides to small air vents, increasing the air pressure and impact force. This causes the powder gathered on both sides to be quickly impacted into the powder chambers on both sides. The air vents 1514 in the middle are the same. When the clean air passes through the two air vents 1514, the airflow speed will not decrease suddenly, and the dust will continue to decrease at a normal speed. However, because the air vents 1514 in the middle of the sandwich plate 1513 are misaligned with the air vents 1514 at the bottom of the lower dust baffle plate 1511, and the holes at the bottom of the lower dust baffle plate 1511 are obliquely offset holes 1515, the airflow direction will deflect to both sides when passing through the middle air vents 1514 of the dust baffle plate 151, causing the dust to gather from both sides.

[0077] III. Dust and Chip Removal System

[0078] like Figure 1 As shown, a double-chain plate chip conveyor 17 is installed on both sides of the workbench between the left and right bridges. A chip bin 18 is installed corresponding to the double-chain plate chip conveyor 17. The chip bin 18 is equipped with a chip discharge channel 181. Multiple chip discharge channels 181 are provided and distributed at the bottom of the left and right bridges. The discharge channels are connected to chip discharge pipes 19. The chip discharge pipes 19 are distributed on both sides of the left and right bridges. The chip discharge pipes 19 are connected to a dust removal and chip discharge system 5. The dust removal and chip discharge system 5 uses a cyclone separator. The gas treated by the cyclone separator is discharged into the atmosphere.

[0079] IV. Tool Magazine

[0080] like Figure 9As shown, the tool magazine 20 is installed on either side of the left bridge 7 or the right bridge 8, and the tool magazine 20 is a concealed tool magazine.

[0081] like Figure 10 , Figure 11 , Figure 12 As shown, the tool magazine 20 is a disc tool magazine. Multiple tool clamping devices 201 are installed on the disc of the disc tool magazine along its circumference. Multiple radial slide rails 202 are arranged on the disc surface of the disc tool magazine along its circumference. The radial slide rails 202 are distributed in a circular array. Tool holders 203 are set on the radial slide rails 202. The tool holders 203 include a base 2031 and a column 2032. The base 2031 is slidably mounted on the radial slide rails 202. A tool disc 204 is set on the upper part of the column 2032. Tools are installed on the tool disc 204. The tool disc 204 is a rotary tool disc 204.

[0082] like Figure 9 , Figure 13 As shown, the disc tool magazine is installed on the transverse slide rail 22. The disc of the disc tool magazine is connected to the protective door 21 through a connector. The disc tool magazine can slide along the transverse slide rail under the drive of the drive mechanism 2. When it moves towards the machining table 3, the protective door 21 is pushed open, and the disc tool magazine rotates to the corresponding tool position for tool replacement.

[0083] When a tool needs to be retrieved from the disc tool magazine, the disc tool magazine first rotates to the side of the protective door 21. The drive mechanism 2 then drives the tool holder 203 to move to the outer edge of the disc tool magazine to the replacement position. Next, the tool disc 204 on the upper part of the column 2032 rotates, and the corresponding tool moves to the replacement position, completing the tool change. After the change is complete, the tool holder 203 resets under the action of the drive mechanism 2, the disc tool magazine moves backward, and the connecting parts on the disc tool magazine close the protective door 21, completing the entire tool changing process.

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them; when the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by the present invention.

Claims

1. A fully enclosed five-axis CNC machining center, characterized in that, It includes a crossbeam (6), a five-axis linkage machining mechanism (1), and a drive mechanism (2) that drives the five-axis linkage machining mechanism (1) to move in different coordinate axis directions, and a machining table (3) corresponding to the five-axis linkage machining mechanism (1). The machining table (3) is used to install clamping fixtures or to fix the workpiece to be clamped. The five-axis linkage machining mechanism (1) is installed on the crossbeam (6); The crossbeam (6) is connected to the left bridge (7) and the right bridge (8) at both ends. The crossbeam (6) is installed on the left bridge (7) and the right bridge (8). Longitudinal slide rails (9) are provided on the upper part of the left bridge (7) and the right bridge (8). The longitudinal slide rails (9) provided on the left bridge (7) and the right bridge (8) are double track slide rails. A rack (10) is provided between the double track slide rails. The rack (10) is configured in conjunction with the crossbeam (6) drive mechanism (2) to drive the crossbeam (6) to move along the Y-axis. A dust-blocking mechanism (4), and a dust removal and chip removal system (5) configured in conjunction with the dust-blocking mechanism (4); The dust-blocking mechanism (4) includes multiple foldable dust-blocking plates (151). The dust-blocking plate (151) is a composite structure with a hollow interior, including an upper dust-blocking plate (1512) and a lower dust-blocking plate (1511). The hollow part is provided with a sandwich plate (1513). The sandwich panel (1513) has pores (1514) distributed from the middle to both outer ends. The size of the pores (1514) in the middle part of the sandwich panel is different from that of the pores (1514) distributed on both sides. The diameter of the pores (1514) in the middle part is larger than that of the pores (1514) on both sides. Corresponding to the lower dust baffle (1511) of the sandwich panel (1513), there are pores (1514) that correspond to the sandwich panel (1513). The pores (1514) on both sides of the lower dust baffle (1511) are consistent with the sandwich panel. (1513) The air holes (1514) set at the center on both sides are set one-to-one, and their diameter is smaller than that of the air holes (1514) set on both sides of the sandwich plate (1513). The air holes (1514) set at the middle position of the lower dust baffle (1511) have the same diameter as the air holes (1514) set on the sandwich plate (1513). The positions of the corresponding air holes (1514) are misaligned, and the air holes (1514) set at the middle position of the lower dust baffle (1511) are oblique offset holes (1515) that are offset to both sides of the dust baffle (151).

2. The fully enclosed five-axis CNC machining center according to claim 1, characterized in that, A front door stop (13) and a rear door stop (14) are set at both ends of the left bridge (7) and the right bridge (8). The rear door stop (14) is normally closed. The rear door stop (14) is closed during processing and open when the machine is stopped.

3. The fully enclosed five-axis CNC machining center according to claim 1, characterized in that, The dust-blocking mechanism (4) is a dust-blocking plate assembly (15). The dust-blocking plate assembly (15) is set on the upper part of the left bridge (7), the right bridge (8) and the front and rear door stops (14). The dust-blocking plate assembly (15) includes multiple foldable dust-blocking plates (151). Two adjacent dust-blocking plates (151) are connected to each other by connectors or multiple dust-blocking plates (151) are connected in series by connecting rods. A set of dust-blocking plate assemblies (15) is set on both the front and rear sides of the crossbeam (6). The dust-blocking plates set on both sides of the crossbeam (6) just cover the upper part of the left bridge (7), the right bridge (8) and the front and rear door stops (14). The side of the dust-blocking plate assembly (15) close to the crossbeam (6) is connected to the crossbeam (6) by connectors. The crossbeam (6) drives the dust-blocking plate assemblies (15) on both sides to move.

4. The fully enclosed five-axis CNC machining center according to claim 1 or 2, characterized in that, Slide grooves (16) are opened in opposite directions along the length of the inner sidewalls of the left bridge (7) and the right bridge (8); the dust baffle (151) is inserted into the slide grooves (16) set inside the left bridge (7) and the right bridge (8) at both ends, and the dust baffle (151) can slide back and forth along the slide grooves (16) inside the left bridge (7) and the right bridge (8).

5. The fully enclosed five-axis CNC machining center according to claim 4, characterized in that, Between the left bridge (7) and the right bridge (8), a double-chain plate chip conveyor (17) is set on both sides of the workbench. A chip bin (18) is set on the double-chain plate chip conveyor (17). A chip discharge channel (181) is set on one side of the chip bin (18). Multiple chip discharge channels (181) are set and distributed at the bottom of the left bridge (7) and the right bridge (8). The chip discharge channel (181) is connected to the chip discharge pipe (19). The chip discharge pipe (19) is distributed on both sides of the left bridge (7) and the right bridge (8). The chip discharge pipe (19) is connected to the dust removal and chip discharge system (5).

6. A tool magazine, applicable to the fully enclosed five-axis CNC machining center according to any one of claims 1-5, characterized in that, The tool magazine (20) is installed on either side of the left bridge (7) or the right bridge (8), and the tool magazine (20) is a concealed tool magazine.

7. The tool magazine according to claim 6, characterized in that, The tool magazine (20) is a disc tool magazine. Multiple tool clamping devices (201) are installed around the disc of the disc tool magazine. Radial slide rails (202) are arranged along the radial direction. Multiple radial slide rails (202) are arranged in a circular array along the disc of the tool magazine (20). Tool holders (203) are arranged on the radial slide rails (202). The tool holders (203) are slidably fitted with the radial slide rails (202). The tool holders (203) include a base (2031) and a column (2032). The base (2031) is slidably installed on the slide rail. A tool disc (204) is arranged on the upper part of the column (2032). Tools are installed on the tool disc (204). The tool disc (204) is a rotary tool disc (204).

8. The tool magazine according to claim 7, characterized in that, The disc tool magazine is installed on the transverse slide rail. The disc of the disc tool magazine is connected to the protective door (21) through the connector. The disc tool magazine can slide along the transverse slide rail (22) under the drive of the drive mechanism (2). When it moves towards the processing table (3), the protective door (21) is pushed open, and the disc tool magazine rotates to the corresponding tool position for tool replacement.

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