A CNC high-speed machining center

Abstract

The application relates to the technical field of numerical control machine tools, in particular to a CNC (computer numerical control) high-speed machining center which comprises a base, a shell, a sliding door, a clamping platform, a machining spindle, a tool changer and a cleaning assembly; the shell is fixedly installed on the base, the sliding door is movably installed at the front end of the shell, the clamping platform is fixedly installed in the shell, the machining spindle is fixedly installed in the shell, the machining spindle is located above the clamping platform, the tool changer is movably installed on the machining spindle, and the cleaning assembly is fixedly installed on the tool changer; each tool on the tool changer is cleaned through the cleaning assembly, and the inside of the tool changer is cleaned while the tool changer rotates and changes tools; the machining center can automatically clean multiple tools at the same time when changing tools, manual dismounting and cleaning are not needed, the labor intensity is reduced, time and labor are saved, and the cleaning efficiency of the tools is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, and in particular to a high-speed CNC machining center. Background Technology

[0002] Machining centers represent a revolutionary advancement developed from CNC milling machines. The fundamental difference lies in the fact that machining centers are equipped with a tool magazine and automatic tool changer, enabling them to automatically exchange machining tools. This groundbreaking design allows the machine tool to automatically select different tools according to the program after a workpiece is clamped once, continuously completing various machining operations such as milling, drilling, and tapping, significantly expanding the machining range and greatly improving efficiency. For this reason, machining centers have become key, high-efficiency equipment for processing complex parts in modern manufacturing.

[0003] In existing machining centers, such as drilling and tapping machining centers, there are automatic tool changers. The tool changer is located at the front end of the machining spindle. During machining, small debris generated can easily splash into the tool changer and adhere to the cutting tools. Current technology uses an air gun on the machining spindle to blow away the debris from the cutting tools during tool changes. However, this cleaning method can only clean a single tool. For less frequently used tools, the debris adhering to the tools cannot be cleaned by the air gun alone. Manual cleaning of each tool and the tool changer is still required, which increases labor intensity, is time-consuming and labor-intensive, and reduces the efficiency of tool cleaning. Summary of the Invention

[0004] The technical objective of this invention is to solve the problem that existing machining centers can only clean a single tool during tool changes. For less frequently used tools, the debris adhering to the tool cannot be cleaned by air guns alone, and manual cleaning of each tool and tool magazine is still required, increasing labor intensity, time and effort, and reducing tool cleaning efficiency. The invention enables machining centers to automatically clean multiple tools simultaneously during tool changes without manual disassembly and cleaning, reducing labor intensity, saving time and effort, and greatly improving tool cleaning efficiency.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A high-speed CNC machining center includes: a base, a housing, a sliding door, a clamping platform, a machining spindle, a tool changer, and a cleaning assembly;

[0007] A housing is fixedly installed on the base. A sliding door is movably installed at the front end of the housing. A clamping platform is fixedly installed inside the housing. A machining spindle is fixedly installed inside the housing. The machining spindle is located above the clamping platform. A tool changer is movably installed on the machining spindle. A cleaning component is fixedly installed on the tool changer.

[0008] The cleaning component cleans each tool on the tool changer and cleans the inside of the tool changer while it rotates to change tools.

[0009] As a preferred embodiment of the CNC high-speed machining center described in this invention, the cleaning component includes a disc, an air pipe, a connecting pipe, a sliding pipe, a brush, an extension block, and a brush.

[0010] The disc is rotatably installed inside the tool changer. Multiple air pipes are fixedly installed on the top of the disc. Multiple connecting pipes are arranged in a ring array around the axis on the outer circumference of the disc. Sliding tubes are slidably installed on each of the connecting pipes. Multiple brushes parallel to the axis are provided at the ends of the sliding tubes. An extension block is provided on the outer circumference of the disc, and the extension block is located on the same vertical plane as the machining spindle. Multiple brushes are provided on the side of the extension block near the tool changer.

[0011] As a preferred embodiment of the CNC high-speed machining center described in this invention, the disk has a circular through hole at its center, an annular cavity inside the disk, a plurality of air inlets at the top of the disk, and the plurality of air inlets are connected to the annular cavity. The outer circumference of the disk has a plurality of air outlets arranged in a circular array around the axis, and the plurality of air outlets are connected to a plurality of connecting pipes.

[0012] In a preferred embodiment of the CNC high-speed machining center described in this invention, a circular block is rotatably mounted at the end of the sliding tube, and the outer side of the circular block is fixedly connected to a plurality of brushes. A cylinder is provided on the circular block, and the cylinder is located inside the sliding tube. A ring is rotatably mounted between the inner circumferential wall of the sliding tube and the outer circumferential wall of the cylinder, and the ring is rotatably connected to the circular block. A tension spring is provided on the side of the ring away from the circular block, and a movable cylinder is provided on the ring, and the movable cylinder is located inside the tension spring.

[0013] In a preferred embodiment of the CNC high-speed machining center described in this invention, a rotating shaft is fixedly installed on the side of the circular block away from the brush, and multiple arc-shaped fan blades are arranged in a circular array around the axis of the rotating shaft.

[0014] As a preferred embodiment of the CNC high-speed machining center described in this invention, the circular block is provided with a plurality of air jet holes arranged in a ring array around the axis, and the plurality of air jet holes and the plurality of brushes are arranged at intervals, and each of the plurality of air jet holes is provided with a miniature one-way valve.

[0015] In a preferred embodiment of the CNC high-speed machining center described in this invention, the connecting tube is slidably located between the inner circumferential wall of the sliding tube and the outer circumferential wall of the moving cylinder, and one end of the tension spring is fixedly connected to the ring, and the other end is fixedly connected to the connecting tube.

[0016] In a preferred embodiment of the CNC high-speed machining center described in this invention, the air pipe is fixedly connected to the machining spindle, and the air pipe is connected to a high-pressure air pump.

[0017] As a preferred embodiment of the CNC high-speed machining center described in this invention, the tool changer is provided with a plurality of U-shaped grooves arranged in a circular array around its axis, and rollers are respectively provided on both sides of the plurality of U-shaped grooves. A drive shaft is fixedly installed in the middle of the tool changer, and the drive shaft rotates within the circular through hole.

[0018] In a preferred embodiment of the CNC high-speed machining center described in this invention, the brush does not contact the tail end of the tool when the tension spring is in its natural state.

[0019] The beneficial effects of this invention are:

[0020] 1. This invention provides a cleaning component on the tool changer. Through the cooperation between the tool changer and the cleaning component, the tool changer can clean each tool and the tool magazine simultaneously during tool changing, eliminating the need for manual disassembly and cleaning. This reduces labor intensity, saves time and effort, and greatly improves the cleaning efficiency of the tools.

[0021] 2. This invention features an arc-shaped fan blade and a brush on the cleaning component. High-pressure gas drives the arc-shaped fan blade to rotate, and the rotating fan blade transmits power to the brush, causing the brush to rotate and clean the tail ends of each tool. Simultaneously, high-pressure gas drives a sliding tube to move along the radial direction of the tool changing disc on the connecting tube, thereby approaching and cleaning each tool. This eliminates the need for manual cleaning and greatly improves the cleaning efficiency of the tools.

[0022] 3. This invention features an extension block on a disc, with a brush mounted on the extension block. By cooperating with the tool changing disc, the brush moves inside the tool changing disc as it rotates to change tools, thus cleaning the inside of the tool changing disc. This eliminates the need for manual disassembly and cleaning, reducing labor intensity, saving time and effort, and improving cleaning efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure in an embodiment of this disclosure.

[0024] Figure 2This is a three-dimensional structural diagram of the tool changer in an embodiment of this disclosure.

[0025] Figure 3 This is a three-dimensional structural diagram of the tool changer disc in an embodiment of this disclosure.

[0026] Figure 4 This is a three-dimensional structural diagram of the cleaning component in an embodiment of this disclosure.

[0027] Figure 5 This is a three-dimensional structural diagram of the cleaning component in an embodiment of this disclosure.

[0028] Figure 6 This is a three-dimensional structural diagram of the disk in an embodiment of this disclosure.

[0029] Figure 7 This is a three-dimensional structural diagram of the connecting pipe, sliding pipe, and brush in an embodiment of this disclosure.

[0030] Figure 8 This is a three-dimensional structural diagram of the connecting tube, sliding tube, and brush interior in an embodiment of this disclosure.

[0031] Figure 9 This is a three-dimensional structural diagram of the sliding tube and the circular block in an embodiment of this disclosure.

[0032] Figure 10 This is a three-dimensional structural diagram of the arc-shaped fan blades inside the sliding tube in an embodiment of this disclosure.

[0033] Reference numerals: 1. Base; 2. Housing; 3. Sliding door; 4. Clamping platform; 5. Machining spindle; 6. Tool changer; 61. U-shaped groove; 62. Roller; 63. Drive shaft; 7. Cleaning assembly; 71. Disc; 711. Circular through hole; 712. Annular cavity; 713. Air inlet; 714. Air outlet; 72. Air pipe; 73. Connecting pipe; 74. Sliding pipe; 741. Circular block; 742. Cylinder; 743. Ring; 744. Tension spring; 745. Moving cylinder; 746. Rotating shaft; 747. Arc-shaped fan blade; 748. Air jet hole; 75. Brush; 76. Extension block; 77. Brush. Detailed Implementation

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] like Figures 1 to 10 As shown, a high-speed CNC machining center includes: a base 1, a housing 2, a sliding door 3, a clamping platform 4, a machining spindle 5, a tool changer 6, and a cleaning assembly 7;

[0036] A housing 2 is fixedly installed on the base 1. A sliding door 3 is movably installed at the front end of the housing 2. A clamping platform 4 is fixedly installed inside the housing 2. A machining spindle 5 is fixedly installed inside the housing 2. The machining spindle 5 is located above the clamping platform 4. A tool changer 6 is movably installed on the machining spindle 5. A cleaning component 7 is fixedly installed on the tool changer 6.

[0037] The cleaning component 7 cleans each tool on the tool changer 6 and cleans the inside of the tool changer 6 while the tool changer 6 rotates to change tools.

[0038] The base 1 is fixedly mounted on the top of the housing 2 by bolt assembly. The housing 2 is welded from steel plate, which has both protective and sealing properties, and can effectively isolate machining debris, cutting fluid splashes and noise leakage. The front end of the housing 2 is movably mounted with a sliding door 3 that can slide along a horizontal guide rail. The sliding door 3 is equipped with a transparent observation window and a convenient handle, which allows the operator to observe the machining status in real time.

[0039] The clamping platform 4 is adapted to clamp and fix workpieces of different specifications, ensuring the stability of the workpiece during the machining process. The machining spindle 5 adopts an electric spindle design, which has high speed, high precision and low vibration characteristics. Its axis is set perpendicular to the surface of the clamping platform 4, and the machining spindle 5 is located directly above the clamping platform 4 to ensure the coaxiality and perpendicularity of the cutting process.

[0040] The tool changer 6 can rotate flexibly to achieve rapid switching between different tools. During the machining process, when a tool change is required, the cleaning component 7 responds first: on the one hand, it cleans the tail ends and mounting positions of each tool on the tool changer 6 to remove cutting debris and oil stains; on the other hand, while the tool changer 6 rotates to change tools, it simultaneously cleans the internal cavity of the tool changer 6 to avoid debris residue affecting the tool change accuracy or damaging the tool.

[0041] like Figures 3 to 5 As shown, the cleaning component 7 includes a disc 71, an air tube 72, a connecting tube 73, a sliding tube 74, a brush 75, an extension block 76, and a brush 77.

[0042] The disc 71 is rotatably mounted inside the tool changer 6. Multiple air pipes 72 are fixedly mounted on the top of the disc 71. Multiple connecting pipes 73 are arranged in a ring array around the axis on the outer circumference of the disc 71. Sliding pipes 74 are slidably mounted on the multiple connecting pipes 73. Multiple brushes 75 parallel to the axis are provided at the ends of the sliding pipes 74. An extension block 76 is provided on the outer circumference of the disc 71, and the extension block 76 is located on the same vertical plane as the machining spindle 5. Multiple brushes 77 are provided on the side of the extension block 76 near the tool changer 6.

[0043] The disc 71 is fixedly mounted on the drive shaft 63 inside the tool changer 6 via a bearing assembly, ensuring that the disc 71 remains stationary when the tool changer 6 rotates. The annular cavity 712 inside the disc 71 serves as a gas flow channel. One end of the air pipe 72 is sealed and connected to the annular cavity 712 of the disc 71, and the other end is connected to the high-pressure air pump pipeline of the machining center to ensure stable delivery of high-pressure gas.

[0044] It should be noted that the number of connecting pipes 73 is one less than the number of tool mounting positions on the tool changer 6. The inner wall of the sliding pipe 74 and the outer wall of the connecting pipe 73 are fitted with a clearance fit and are equipped with a wear-resistant sealing ring to ensure smooth sliding while preventing gas leakage. The brush 75 is detachably fixed by a snap-fit, and the bristle length matches the length of the tool tail end to ensure cleaning coverage. The extension block 76 is positioned on the same vertical plane as the machining spindle 5 to ensure that there is no interference between it and the machining spindle 5 when the tool changer 6 rotates for tool changing. The brush 77 fits tightly against the inner cavity wall of the tool changer 6.

[0045] like Figure 5 and Figure 6 As shown, a circular through hole 711 is provided at the center of the disk 71, an annular cavity 712 is provided inside the disk 71, a plurality of air inlets 713 are provided on the top of the disk 71, and the plurality of air inlets 713 are respectively connected to the annular cavity 712. A plurality of air outlets 714 are arranged in a ring array around the axis on the outer circumference of the disk 71, and the plurality of air outlets 714 are respectively connected to the plurality of connecting pipes 73.

[0046] The circular through-hole 711 is precisely clearance-fitted with the outer diameter of the drive shaft 63 of the machining spindle 5, providing clearance space for the drive shaft 63 and ensuring no mechanical interference when the tool changer 6 rotates. The width and depth of the annular cavity 712 are designed according to the gas flow requirements, and the inner wall is polished to reduce airflow resistance and ensure uniform gas distribution. The number of air inlets 713 corresponds one-to-one with the number of air pipes 72. Each air inlet 713 vertically penetrates the upper end face of the disc 71 and is sealed and connected to the internal annular cavity 712. The number of air outlets 714 is exactly the same as the number of connecting pipes 73, and the included angle between adjacent air outlets 714 is equal to ensure balanced airflow in each air path.

[0047] like Figures 7 to 10As shown, a circular block 741 is rotatably mounted on the end of the sliding tube 74, and the outer side of the circular block 741 is fixedly connected to a plurality of brushes 75. A cylinder 742 is provided on the circular block 741, and the cylinder 742 is located inside the sliding tube 74. A ring 743 is rotatably mounted between the inner circumference of the sliding tube 74 and the outer circumference of the cylinder 742, and the ring 743 is rotatably connected to the circular block 741. A tension spring 744 is provided on the side of the ring 743 away from the circular block 741. A movable cylinder 745 is provided on the ring 743, and the movable cylinder 745 is located inside the tension spring 744.

[0048] At the end of the sliding tube 74 furthest from the disc 71, a circular block 741 is rotatably mounted via a miniature bearing. The block 741 is made of lightweight, wear-resistant aluminum alloy, which reduces the load on the surface and improves wear resistance. Multiple brushes 75 are fixedly mounted at equal intervals along the circumference of the outer circumference of the block 741. The brushes 75 are made of highly elastic nylon filaments and are detachably connected to the block 741 via a snap-fit ​​structure, facilitating future maintenance and replacement and ensuring stable brushing results.

[0049] The cylinder 742 is a hollow, thin-walled structure, rotating on the inner circumference of the movable cylinder 745, providing guidance and support for the rotation of the circular block 741. The ring 743 is made of self-lubricating engineering plastic, and its end near the circular block 741 is rotatably connected to the circular block 741, ensuring that the ring 743 remains stationary when the circular block 741 rotates, thus avoiding motion interference.

[0050] The tension spring 744 is used to reset the circular block 741. The movable cylinder 745 is a hollow tubular structure, located inside the tension spring 744 and coaxially fitted with the cylinder 742. Its inner wall is rotatably engaged with the outer wall of the cylinder 742.

[0051] like Figure 8 and Figure 10 As shown, a rotating shaft 746 is fixedly installed on the side of the circular block 741 away from the brush 75, and multiple arc-shaped fan blades 747 are arranged in a circular array around the axis of the rotating shaft 746.

[0052] The rotating shaft 746 is made of high-strength alloy steel, and the arc-shaped fan blade 747 adopts a streamlined arc design. The curvature of the arc-shaped fan blade 747 is precisely matched with the gas flow trajectory. The surface of the arc-shaped fan blade 747 is polished to reduce airflow resistance. At the same time, the arc-shaped fan blade 747 and the axis of the rotating shaft 746 form a reasonable angle to ensure that the high-pressure gas can generate the maximum torque when impacting the arc-shaped fan blade 747, which efficiently drives the rotating shaft 746 to rotate, thereby driving the circular block 741 and the outer brush 75 to rotate synchronously, so as to achieve brushing and cleaning of the tail end of the tool.

[0053] like Figure 9 and Figure 10 As shown, the circular block 741 has multiple air jet holes 748 arranged in a ring around the axis, and the multiple air jet holes 748 and the multiple brushes 75 are arranged at intervals. Each of the multiple air jet holes 748 is provided with a miniature one-way valve.

[0054] The number of air jets 748 and brushes 75 are arranged at intervals to ensure that the gas jets and brushes 75 thoroughly cover the tool tail surface during cleaning. The one-way valve is made of corrosion-resistant engineering plastic and a stainless steel valve core. It is compact and highly responsive, and its installation method is to insert it into the inner wall of the air jet 748 with an interference fit. The miniature one-way valve only allows high-pressure gas to be ejected unidirectionally from the inside of the circular block 741 towards the tool. This effectively prevents metal shavings, cutting oil, and other impurities generated during the cleaning process from flowing back into the air jet 748 and the internal air passage, avoiding air passage blockage or component wear, ensuring the long-term stable operation of the cleaning component 7, and at the same time, it does not affect the gas jet pressure and flow rate, ensuring the auxiliary cleaning effect.

[0055] like Figure 8 As shown, the connecting pipe 73 is slidably located between the inner circumferential wall of the sliding pipe 74 and the outer circumferential wall of the moving cylinder 745. One end of the tension spring 744 is fixedly connected to the ring 743, and the other end is fixedly connected to the connecting pipe 73.

[0056] When the air pressure inside the moving cylinder 745 increases and pushes the circular block 741 to move outward, the connecting pipe 73 moves axially synchronously with the sliding pipe 74, and the tension spring 744 is stretched smoothly, storing elastic potential energy. After cleaning is completed, the air pressure decreases, and the tension spring 744 releases its potential energy to drive the components to reset, ensuring accurate reset for the next cleaning action.

[0057] The air pipe 72 is fixedly connected to the machining spindle 5, and the air pipe 72 is connected to a high-pressure air pump.

[0058] The air pipe 72 is fixedly connected to the outer wall of the machining spindle 5. This is to ensure that the entire cleaning assembly 7 remains stationary when the tool changer 6 rotates. At the same time, the connecting pipe 73 between the air pipe 72 and the high-pressure air pump also integrates a pressure regulating valve and a solenoid control valve. Both are electrically connected to the control system of the machining center and can automatically adjust the gas pressure and on / off timing according to the cleaning command to achieve precise supply of high-pressure gas on demand, which not only ensures the cleaning effect but also avoids energy waste.

[0059] like Figure 2 and Figure 3 As shown, the tool changer 6 has multiple U-shaped grooves 61 arranged in a ring around its axis, and rollers 62 are respectively provided on both sides of the multiple U-shaped grooves 61. A drive shaft 63 is fixedly installed in the middle of the tool changer 6, and the drive shaft 63 rotates within the circular through hole 711.

[0060] The U-shaped grooves 61 serve as the mounting positions for the cutting tools, each corresponding to a specific tool. The included angle between adjacent U-shaped grooves 61 is uniform, ensuring indexing accuracy during tool changes. On both sides of each U-shaped groove 61, rollers 62 are symmetrically mounted via miniature rotating shafts and bearings. These rollers 62 are made of wear-resistant nylon or stainless steel, with a smooth surface and a degree of elasticity. When a tool is inserted into the U-shaped groove 61, the rollers 62 roll with the tool, reducing contact friction and guiding and limiting the tool, ensuring precise tool installation.

[0061] The upper end of the drive shaft 63 is connected to the tool change drive motor of the machining center, while the lower end is coaxially inserted into the circular through hole 711 at the center of the disc 71. A high-precision rolling bearing is installed between the inner wall of the circular through hole 711 and the drive shaft 63 to ensure the smooth rotation of the drive shaft 63 and to ensure that there is no radial movement when the tool change disc 6 rotates, thereby ensuring the accuracy of the tool change action.

[0062] In its natural state, the tension spring 744 prevents the brush 75 from contacting the tail end of the cutter.

[0063] In its natural state without external force, the tension spring 744 is in a slightly stretched initial elastic state. At this time, the elastic restoring force of the tension spring 744 drives the related moving parts to maintain their initial positions. Constrained by the tension of the tension spring 744, the brush 75, which is fixedly connected to the circular block 741, will be in a retracted position close to the circular disk 71 along with the circular block 741 and the sliding tube 74. A reasonable gap of 3-5mm is maintained between the tip of the brush bristles and the tail end of the tool installed in the U-shaped groove 61 of the tool changing disc 6, so that there is no physical contact between them, ensuring that no interference occurs when the tool changing disc 6 rotates to change tools.

[0064] The working principle of this invention is as follows: When the drilling machine stops working and the tool is being changed, firstly, the high-pressure air pump is started by the control system. The high-pressure air pump fills the air pipe 72 with high-pressure gas. The high-pressure gas will enter the annular cavity 712 of the disc 71 through the air pipe 72, and enter the connecting pipe 73 through multiple air outlets 714. The gas enters the moving cylinder 745 through the connecting pipe 73 and comes into contact with the arc-shaped fan blade 747, thereby blowing the arc-shaped fan blade 747 and the rotating shaft 746 to rotate. The rotating shaft 746 drives the circular block 741 and the brush 75 on the outside of the circular block 741 to rotate together. The circular block 741 drives the cylindrical cylinder 742 to rotate in the moving cylinder 745. After passing through the arc-shaped fan blade 747, the gas will be blown out through the air jet 748 on the circular block 741.

[0065] At the same time, since the amount of gas ejected from the jet hole 748 is less than the amount of gas entering, the air pressure inside the moving cylinder 745 will increase, pushing the round block 741 to move outward. As the round block 741 rotates, it will drive the round cylinder 742, the moving cylinder 745, the ring 743 and the sliding tube 74 to move together, thereby causing the connecting tube 73 to slide axially on the inner circumference of the sliding tube 74 and the outer circumference of the moving cylinder 745, and causing the tension spring 744 to stretch.

[0066] Each rotating block 741 drives the brush 75 to rotate together and move closer to the tail of each tool, thereby brushing the tail of each tool. At the same time, the gas ejected through the air jet hole 748 further assists in cleaning, removing the debris on the tail of the tool. After cleaning, the tool changing disc 6 rotates driven by the drive shaft 63 and changes the tool. During the rotation of the tool changing disc 6, since the disc 71 is stationary, as the tool changing disc 6 rotates, the brush 77 at the bottom of the extension block 76 on the disc 71 will brush the inside of the tool changing disc 6, thereby brushing away the debris attached to the inside of the tool changing disc 6, and the cleaned debris falls onto the clamping platform 4 by its own gravity.

[0067] After cleaning is completed, the high-pressure air pump stops working, and the brush 75 returns to its original position through the elastic potential energy of the tension spring 744, thus enabling the next step of blade replacement.

[0068] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A CNC high-speed machining center, characterized in that, include: Base (1), housing (2), sliding door (3), clamping platform (4), machining spindle (5), tool changer (6) and cleaning assembly (7); A housing (2) is fixedly installed on the base (1). A sliding door (3) is movably installed at the front end of the housing (2). A clamping platform (4) is fixedly installed inside the housing (2). A machining spindle (5) is fixedly installed inside the housing (2). The machining spindle (5) is located above the clamping platform (4). A tool changer (6) is movably installed on the machining spindle (5). A cleaning component (7) is rotatably installed on the tool changer (6). The cleaning component (7) cleans each tool on the tool changer (6) and cleans the inside of the tool changer (6) while the tool changer (6) rotates to change tools. The cleaning component (7) includes a disc (71), an air tube (72), a connecting tube (73), a sliding tube (74), a brush (75), an extension block (76), and a brush (77). The disc (71) is rotatably mounted inside the tool changer (6). Multiple air pipes (72) are fixedly mounted on the top of the disc (71). Multiple connecting pipes (73) are arranged in a ring array around the axis on the outer circumference of the disc (71). Sliding pipes (74) are slidably mounted on the multiple connecting pipes (73). Multiple brushes (75) parallel to the axis are provided at the ends of the sliding pipes (74). An extension block (76) is provided on the outer circumference of the disc (71). The extension block (76) and the machining spindle (5) are located on the same vertical plane. Multiple brushes (77) are provided on the side of the extension block (76) near the tool changer (6). A circular block (741) is rotatably mounted on the end of the sliding tube (74), and the outer side of the circular block (741) is fixedly connected to a plurality of brushes (75). A cylinder (742) is provided on the circular block (741), and the cylinder (742) is located inside the sliding tube (74). A ring (743) is rotatably mounted between the inner circumference of the sliding tube (74) and the outer circumference of the cylinder (742), and the ring (743) is rotatably connected to the circular block (741). A tension spring (744) is provided on the side of the ring (743) away from the circular block (741). A movable cylinder (745) is provided on the ring (743), and the movable cylinder (745) is located inside the tension spring (744). The connecting tube (73) is slidably located between the inner circumferential wall of the sliding tube (74) and the outer circumferential wall of the moving cylinder (745). One end of the tension spring (744) is fixedly connected to the ring (743), and the other end is fixedly connected to the connecting tube (73). A drive shaft (63) is fixedly installed in the middle of the tool changer (6), and the drive shaft (63) rotates within the circular through hole (711) of the disc (71).

2. The CNC high-speed machining center as described in claim 1, characterized in that: A circular through hole (711) is provided at the center of the disk (71), and an annular cavity (712) is provided inside the disk (71). A plurality of air inlets (713) are provided on the top of the disk (71), and the plurality of air inlets (713) are respectively connected to the annular cavity (712). A plurality of air outlets (714) are arranged in a ring array around the axis on the outer circumference of the disk (71), and the plurality of air outlets (714) are respectively connected to the plurality of connecting pipes (73).

3. A CNC high-speed machining center as described in claim 1, characterized in that: A rotating shaft (746) is fixedly installed on the side of the circular block (741) away from the brush (75), and multiple arc-shaped fan blades (747) are arranged in a ring array on the rotating shaft (746) with the axis as the center.

4. A CNC high-speed machining center as described in claim 3, characterized in that: The circular block (741) has multiple air jet holes (748) arranged in a ring around the axis, and the multiple air jet holes (748) and the multiple brushes (75) are arranged at intervals. Each of the multiple air jet holes (748) is provided with a miniature one-way valve.

5. A CNC high-speed machining center as described in claim 1, characterized in that: The air pipe (72) is fixedly connected to the machining spindle (5), and the air pipe (72) is connected to a high-pressure air pump.

6. A CNC high-speed machining center as described in claim 2, characterized in that: The tool changer (6) has multiple U-shaped grooves (61) arranged in a ring around its axis, and rollers (62) are respectively provided on both sides of the multiple U-shaped grooves (61).

7. A CNC high-speed machining center as described in claim 1, characterized in that: In its natural state, the tension spring (744) prevents the brush (75) from contacting the tail end of the cutter.

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