Five-axis high-speed high-precision machining center

Abstract

The invention relates to the field of machining equipment, in particular to a five-axis high-speed high-precision machining center. The automatic tool changing device comprises a base, a first sliding seat, a first sliding driving mechanism, a lifting seat, a lifting driving mechanism, a second sliding seat, a second sliding driving mechanism, a machining spindle, a cradle type rotary table and an automatic tool changing mechanism. The cradle type rotary table has at least two rotational degrees of freedom and is used for machining a workpiece at multiple angles. The sliding seats and the driving mechanisms work cooperatively to ensure that the machining main shaft can accurately move towards or away from the cradle type rotary table; and efficient and convenient tool replacement is achieved through the automatic tool replacement mechanism. The five-axis high-speed high-precision machining center has high automation and flexibility, and the machining efficiency and precision are remarkably improved.

Description

Technical Field

[0001] The present application relates to the field of mechanical processing equipment, and in particular to a five-axis high-speed and high-precision machining center. Background Art

[0002] In the field of mechanical processing, five-axis machining centers are favored because they can achieve efficient and high-precision processing of complex-shaped workpieces. With the rapid development of industries such as automobiles and aerospace, especially when processing multiple surfaces of complex aluminum automotive parts, higher requirements are placed on the speed, accuracy and degree of automation of five-axis machining centers.

[0003] The related technology discloses a five-axis machining center, which includes: a frame, which includes a base and a gantry connected to each other, the base is provided with a machining position and a tool-loading position, the gantry is arranged close to the machining position and encloses the base to form a accommodating space; a placing mechanism, which is arranged at the machining position, the placing mechanism is provided with a machining table, and the machining table is used to place the workpiece to be machined; a machining spindle, which is connected to the gantry and is located on the side of the gantry facing away from the accommodating space, the machining spindle includes a spindle box and a machining tool, the machining tool is detachably connected to the spindle box, and the machining tool is used to process the workpiece to be machined; and a tool holder, which is movably arranged in the accommodating space, the tool holder is provided with a plurality of movable tool storage positions, the tool holder is also provided with a tool exit position, the tool storage position is used to place the machining tool, wherein, when the tool holder reaches the tool-loading position, the plurality of tool storage positions can reach the tool exit position in sequence, so that the spindle box is connected to the machining tool. In one embodiment of the present invention, the tool holder includes: a mounting seat, which is detachably connected to the base and is provided with a first slide rail; a mounting frame, which is slidably connected to the first slide rail; a first driving member, which is connected to the mounting seat, and the output end of the first driving member is connected to the mounting frame and the rotating mechanism, the rotating mechanism is connected to one end of the mounting frame facing away from the mounting seat, and the rotating mechanism is provided with a plurality of tool storage positions and tool outlet positions; wherein the first driving member drives the mounting frame to drive the rotating mechanism to make the tool outlet position close to or away from the upper tool position.

[0004] In the related technology, the tool holder of the five-axis machining center realizes the replacement of the tool through a complex mechanical structure, including the coordinated work of multiple components such as the mounting seat, the mounting frame, the first driving member and the rotating mechanism, which makes the tool changing process cumbersome and time-consuming. It not only increases the complexity and manufacturing cost of the equipment, but also seriously affects the overall processing efficiency. Summary of the invention

[0005] In order to improve the efficiency of tool replacement, the present application provides a five-axis high-speed and high-precision machining center.

[0006] The five-axis high-speed and high-precision machining center provided in this application adopts the following technical solutions: A five-axis high-speed and high-precision machining center, comprising a base, a first sliding seat, a first sliding drive mechanism, a lifting seat, a lifting drive mechanism, a second sliding seat, a second sliding drive mechanism, a machining spindle, a cradle-type turntable and an automatic tool changing mechanism; the cradle-type turntable is arranged on the base, and the cradle-type turntable has at least two rotational degrees of freedom for realizing the machining of workpieces at multiple angles; the first sliding seat is slidably matched with the base, the first sliding drive mechanism is arranged on the base, and the first sliding drive mechanism is used to drive the first sliding seat to move along a first direction; the lifting seat is in contact with the The first sliding seat is slidably matched, and the lifting drive mechanism is arranged on the first sliding seat, and the lifting drive mechanism is used to drive the lifting seat to rise and fall; the second sliding seat is slidably matched with the lifting seat, and the second sliding drive mechanism is arranged on the lifting seat, and the second sliding drive mechanism is used to drive the second sliding seat to move along the second direction, and the processing spindle is arranged on the second sliding seat to move the processing spindle toward or away from the cradle-type turntable; the automatic tool changing mechanism is arranged on the base, and the automatic tool changing mechanism is used to automatically change the tool of the processing spindle.

[0007] By adopting the above technical solution, multi-faceted milling processing can be achieved through one-time clamping of the workpiece, which greatly shortens the production time. Advanced tools and high-speed processing technology are used to greatly reduce the processing time. The cradle-type turntable has at least two rotational degrees of freedom, so that the workpiece can be processed at different angles, which improves the processing flexibility and efficiency. The multi-stage movement function of the first sliding seat, the lifting seat and the second sliding seat ensures that the processing spindle can be accurately positioned at the required position, realizing precise positioning in three-dimensional space. The setting of the automatic tool changing mechanism reduces manual intervention, improves the tool changing speed, and thus improves the overall production efficiency. Since the processing spindle can quickly approach or move away from the cradle-type turntable, the tool switching speed during the processing is accelerated, further shortening the processing time.

[0008] Optionally, the automatic tool changing mechanism includes a mounting frame and a tool magazine assembly, the mounting frame includes a top frame and two support frames, the bottom end of each support frame is fixedly connected to the base, and the two ends of the top frame are respectively fixedly connected to the top ends of the two support frames; the tool magazine assembly is arranged on one side of the top frame close to the cradle-type turntable.

[0009] By adopting the above technical solution, the mounting frame of the automatic tool change mechanism has a reasonable structure and stable structural support. The top enclosure and two support frames form a stable frame structure, ensuring the stability and reliability of the tool magazine assembly. At the same time, the tool magazine assembly is arranged on the side of the top enclosure close to the cradle-type turntable, making tool replacement more convenient and efficient, reducing tool change time and operation complexity, and improving the work efficiency and processing accuracy of the entire machining center.

[0010] Optionally, a side of the mounting frame facing the cradle-type turntable and a side of the mounting frame away from the cradle-type turntable are both opened.

[0011] By adopting the above technical solution, the side of the mounting frame facing the cradle-type turntable and the side away from the cradle-type turntable are both opened, making the layout of the automatic tool changing mechanism more reasonable, improving the spatial flexibility of the tool changing operation, reducing the interference problems that may be encountered during the tool changing process, and improving the tool changing efficiency and reliability. At the same time, it is also conducive to improving the convenience of operation and maintenance of the entire machining center.

[0012] Optionally, a plurality of mutually intersecting reinforcing rods are arranged inside the support frame, and a plurality of triangles are formed between the plurality of reinforcing rods and the support frame.

[0013] By adopting the above technical solution, multiple triangular structures significantly enhance the overall rigidity and stability of the mounting frame, further ensuring the reliability and safety of the tool magazine assembly and the entire automatic tool changing mechanism during high-speed, high-precision machining.

[0014] Optionally, a broken tool detection component is provided on the tool magazine component.

[0015] By adopting the above technical solution, a tool-broken detection component is provided on the tool magazine component, which can monitor the status of the tool in real time, detect and alarm the tool-broken situation in time, and improve the safety and reliability of processing. At the same time, it can avoid the scrapping of workpieces and damage to equipment caused by tool-broken, reduce production costs, and improve production efficiency.

[0016] Optionally, the automatic tool changing mechanism further comprises a tool magazine protective cover, wherein the tool magazine protective cover is fixed on the mounting frame, and the tool magazine assembly is located inside the tool magazine protective cover.

[0017] By adopting the above technical solution, the tool magazine protective cover can effectively prevent external impurities from entering the tool magazine component, thereby increasing the tool life and tool change reliability. At the same time, the tool magazine protective cover can also enhance safety, prevent operators from accidentally contacting the tool magazine component during equipment operation, and reduce safety hazards.

[0018] Optionally, an outer protective cover is provided on the base, and the first sliding seat, the first sliding drive mechanism, the lifting seat, the lifting drive mechanism, the second sliding seat, the second sliding drive mechanism, the machining spindle, the cradle-type turntable and the automatic tool changing mechanism are all located inside the outer protective cover; an observation port and an automatic door mechanism are provided on the side of the outer protective cover close to the cradle-type turntable.

[0019] By adopting the above technical solution, the tool magazine protective cover can effectively prevent external impurities from entering the tool magazine component, thereby increasing the tool life and tool change reliability. At the same time, the tool magazine protective cover can also enhance safety, prevent operators from accidentally contacting the tool magazine component during equipment operation, and reduce safety hazards.

[0020] Optionally, the automatic door mechanism includes a sliding door and a driving mechanism, the sliding door is slidably matched with the outer protective cover, the driving mechanism is arranged on the outer protective cover, and the driving mechanism is used to drive the sliding door to slide in a horizontal direction.

[0021] By adopting the above technical solution, the sliding door and the outer protective cover are slidably matched, and the driving mechanism is arranged on the outer protective cover to drive the sliding door to slide in the horizontal direction. This allows the operator to open or close the automatic door mechanism conveniently and quickly, improves the safety and convenience of the equipment, reduces the time and labor intensity of manual intervention, and improves the overall processing efficiency.

[0022] Optionally, a movement space for the second sliding seat to move is provided between the end of the outer protective cover and the first sliding seat.

[0023] By adopting the above technical solution, a movement space for the second sliding seat to move is provided between the end of the outer protective cover and the first sliding seat, ensuring that the second sliding seat will not be hindered during the longitudinal movement, thereby improving the movement flexibility and processing range of the machining spindle. At the same time, the entire machining center structure is made more compact, the equipment footprint is reduced, and the space utilization rate of the workshop is improved.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through one-time clamping of the workpiece, multi-faceted milling can be achieved, which greatly shortens the production time. Advanced tools and high-speed processing technology can be used to significantly reduce the processing time; 2. The automatic tool changing mechanism is set on the base, which can quickly and accurately change the tool of the machining spindle, greatly improving the tool changing efficiency and overall machining efficiency; 3. Multiple sliding drive mechanisms (first sliding drive mechanism, lifting drive mechanism, second sliding drive mechanism) work together to ensure that the machining spindle can move accurately in three-dimensional space, achieving high-speed and high-precision machining requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a five-axis high-speed and high-precision machining center in an embodiment of the present application.

[0026] Figure 2It is a structural schematic diagram of the base, the first sliding seat, the lifting seat, the lifting drive mechanism, the second sliding seat, the processing spindle, the cradle-type turntable and the automatic tool changing mechanism in the embodiment of the present application.

[0027] Figure 3 It is a schematic diagram of the structure of the mounting frame and tool magazine assembly in the embodiment of the present application.

[0028] Description of reference numerals: 1. Base; 2. First sliding seat; 3. Lifting seat; 4. Lifting drive mechanism; 41. Motor; 42. Screw rod; 5. Second sliding seat; 6. Processing spindle; 7. Cradle-type turntable; 71. Flip seat; 72. Flip drive mechanism; 73. Rotating worktable; 74. Support seat; 8. Automatic tool changing mechanism; 81. Mounting frame; 811. Top frame; 812. Support frame; 813. Reinforcement rod; 82. Tool magazine assembly; 83. Broken tool detection assembly; 84. Tool magazine protective cover; 9. External protective cover; 91. Movement space; 10. Automatic door mechanism; 11. Pedal mechanism. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be the common meanings understood by those skilled in the art to which this application belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components.

[0031] For ease of understanding, in the horizontal direction of this embodiment, the moving direction of the first sliding seat 2 is defined as the first direction, and the length direction of the machining spindle 6 is defined as the second direction, and the five-axis high-speed and high-precision machining center is described on this basis.

[0032] The present application embodiment discloses a five-axis high-speed and high-precision machining center. Figure 1 and Figure 2The five-axis high-speed and high-precision machining center includes a base 1, a first sliding seat 2, a first sliding drive mechanism, a lifting seat 3, a lifting drive mechanism 4, a second sliding seat 5, a second sliding drive mechanism, a machining spindle 6, a cradle-type turntable 7 and an automatic tool changing mechanism 8. Among them, the cradle-type turntable 7 is arranged on the base 1, and the cradle-type turntable 7 has at least two rotational degrees of freedom, which is used to realize the machining of the workpiece at multiple angles. The first sliding seat 2 is slidably matched with the base 1, and the first sliding drive mechanism is arranged on the base 1. The first sliding drive mechanism is used to drive the first sliding seat 2 to move in a first direction. The lifting seat 3 is slidably matched with the first sliding seat 2, and the lifting drive mechanism 4 is arranged on the first sliding seat 2 to drive the lifting seat 3 to rise and fall. The second sliding seat 5 is slidably matched with the lifting seat 3, and the second sliding drive mechanism is arranged on the lifting seat 3 to drive the second sliding seat 5 to move in a second direction. The machining spindle 6 is arranged on the second sliding seat 5 so that the machining spindle 6 moves toward or away from the cradle-type turntable 7. The automatic tool changing mechanism 8 is arranged on the base 1 and is used for automatically changing the tool of the machining spindle 6 .

[0033] Reference Figure 2 Specifically, the base 1, as the basic structure of the entire machining center, is made of high-specification cast iron material and has good rigidity and stability. The surface of the base 1 is precisely ground to ensure the accurate installation and movement of each component thereon. The first sliding seat 2 is connected to the base 1 through a linear guide pair, which includes a guide rail and a slider. The guide rail is fixed on the base 1, and the slider is fixed on the first sliding seat 2 to ensure that the first sliding seat 2 moves smoothly along the predetermined first direction.

[0034] Continue to refer to Figure 2 The lifting seat 3 is also connected to the first sliding seat 2 through a linear guide pair, and the lifting drive mechanism 4 can be a hydraulic cylinder or an electric cylinder. The hydraulic cylinder has a large driving force and good buffering performance, and is suitable for lifting operations under heavy load conditions; the electric cylinder has a high response speed and positioning accuracy, and is more suitable for occasions that require frequent start and stop and fine adjustment. The second sliding seat 5 is also connected to the lifting seat 3 through a linear guide pair, and the second sliding drive mechanism can be a cylinder or a motor screw structure. The cylinder responds quickly and is suitable for fast movement; the motor screw structure can provide more precise control, especially suitable for operations that require fine adjustment.

[0035] Continue to refer to Figure 2In this embodiment, the lifting drive mechanism 4 includes a motor 41 and a screw rod 42. The screw rod 42 extends in the vertical direction, and both ends of the screw rod 42 are rotatably connected to the first sliding seat 2. The screw rod 42 passes through the lifting seat 3, and the screw rod 42 is threadedly matched with the lifting seat 3. The motor 41 is installed at the top of the first sliding seat 2, and the output shaft of the motor 41 is fixedly connected to the top of the screw rod 42. The screw rod 42 is driven to rotate by the motor 41, and the screw rod 42 drives the lifting seat 3 to rise and fall during the rotation process, and the lifting seat 3 drives the second sliding seat 5 and the processing spindle 6 to rise and fall, so as to facilitate the automatic adjustment of the height of the processing spindle 6.

[0036] Continue to refer to Figure 2 The machining spindle 6 is arranged on the second sliding seat 5, and realizes high-speed rotation through a series of bearing assemblies and transmission mechanisms. The machining spindle 6 can select different types of tools according to different machining requirements, such as drills, milling cutters, etc. The cooling system of the machining spindle 6 adopts an internal cooling method, and coolant is transported through internal pipes to effectively reduce the tool temperature and extend the service life.

[0037] Continue to refer to Figure 2 , the cradle-type turntable 7 is provided with two rotating axes, namely, the A axis and the C axis, which are responsible for rotating around the vertical axis and the horizontal axis respectively. This double rotation allows the workpiece to be processed at multiple angles, thereby improving the processing flexibility and adaptability. In this embodiment, the cradle-type turntable 7 includes a flip seat 71, a flip drive mechanism 72, a rotating table 73, a rotating drive mechanism and two support seats 74. The two support seats 74 are both fixed on the base 1, the flip seat 71 extends along the first direction, both ends of the flip seat 71 are rotatably connected to the support seat 74, the flip drive mechanism 72 is arranged at one end of the support seat 74, the flip drive mechanism 72 is used to drive the flip seat 71 to flip, and the specific flip drive structure can be a motor 41. The rotating table 73 is rotatably connected to the flip seat 71, the rotating drive mechanism is arranged inside the flip seat 71, the rotating drive mechanism is used to drive the rotating table 73 to rotate, and the rotating table 73 is used to fix parts. The specific rotating drive mechanism can be a DD motor, or a combination of a servo motor 41 and a reducer can be used to achieve high-precision and high-torque rotation.

[0038] Reference Figure 2 and Figure 3The automatic tool changing mechanism 8 includes a mounting frame 81 and a tool magazine assembly 82. The mounting frame 81 includes a top frame 811 and two support frames 812. The bottom end of each support frame 812 is fixedly connected to the base 1, and the two ends of the top frame 811 are fixedly connected to the top ends of the two support frames 812. A plurality of mutually intersecting reinforcing rods 813 are arranged inside the support frame 812. In the present embodiment, the number of the reinforcing rods 813 is two, and four triangular structures are formed between the two reinforcing rods 813 and the support frame 812. The multiple triangular structures significantly enhance the overall rigidity and stability of the mounting frame 81, and further ensure the reliability and safety of the tool magazine assembly 82 and the entire automatic tool changing mechanism 8 during high-speed and high-precision machining.

[0039] Reference Figure 2 and Figure 3 The tool magazine assembly 82 is arranged on one side of the top frame 811 near the cradle-type turntable 7, and stores a variety of tools of different types and specifications. The automatic tool changing mechanism 8 also includes a tool changing manipulator, which can quickly switch tools between the tool magazine assembly 82 and the processing spindle 6. During the tool changing process, the manipulator confirms the tool type and state through image recognition technology to ensure the accuracy and safety of each tool change.

[0040] Reference Figure 2 In order to further improve the processing accuracy and efficiency, the automatic tool changing mechanism 8 also adds a broken tool detection component 83. The broken tool detection component 83 mainly includes a sensor and a signal processing unit. The sensor is installed near the tool magazine component 82, and can immediately issue an alarm when the tool breaks and stop the processing process. The signal processing unit receives the signal from the sensor and judges the state of the tool through an algorithm. If an abnormality is detected, it will promptly notify the operator to check and replace the tool to avoid the increase in the scrap rate caused by tool damage. The working principle of the broken tool detection component 83 is as follows: the sensor uses a photoelectric sensor or a vibration sensor. The former monitors the presence of the tool by emitting a light beam, and the latter determines whether the tool is intact by detecting the change in the vibration frequency of the tool. When the tool breaks, the photoelectric sensor cannot receive the reflected light, and the vibration sensor will also detect an abnormal vibration mode. At this time, the signal processing unit will immediately send this information to the control system, the control system will suspend the processing process, and trigger the alarm to remind the operator. The operator can view detailed fault information through the display screen so that he can quickly take measures to solve the problem.

[0041] Reference Figure 1In order to further enhance the safety and environmental protection of the equipment, the automatic tool changing mechanism 8 also adds a tool magazine protective cover 84. The tool magazine protective cover 84 is fixed on the mounting frame 81, covering the tool magazine assembly 82, preventing external dust and impurities from entering the tool magazine, and also protecting the operator from being harmed by high-speed rotating tools. The tool magazine protective cover 84 is made of transparent material, which is convenient for the operator to observe the conditions in the tool magazine at any time to ensure normal operation. The structure of the tool magazine protective cover 84 is as follows: the tool magazine protective cover 84 consists of two parts, one part is fixed on the top frame 811 of the mounting frame 81, and the other part can be opened and closed to facilitate the loading and unloading and maintenance of the tool. The opening and closing of the tool magazine protective cover 84 can be performed manually or electrically. In the electric mode, a small motor is used to drive the connecting rod mechanism to achieve rapid switching.

[0042] Reference Figure 1 In order to further improve the overall safety and convenience of the equipment, an outer protective cover 9 is provided on the base 1. The outer protective cover 9 encloses the first sliding seat 2, the first sliding drive mechanism, the lifting seat 3, the lifting drive mechanism 4, the second sliding seat 5, the second sliding drive mechanism, the processing spindle 6, the cradle-type turntable 7 and the automatic tool changing mechanism 8 to form a relatively closed space. This can not only prevent the influence of the external environment, but also effectively collect and process the chips and coolant generated during the processing, and keep the workplace clean. The outer protective cover 9 is divided into four parts: front, back, left and right. An observation port and an automatic door mechanism 10 are provided in the front. The observation port is made of large-size tempered glass with a wide field of view, which is convenient for the operator to observe the internal processing conditions.

[0043] Continue to refer to Figure 1 The automatic door mechanism 10 includes a sliding door and a driving mechanism. The sliding door is slidably matched with the peripheral protective cover 9. The driving mechanism is arranged on the peripheral protective cover 9 and is used to drive the sliding door to slide in the horizontal direction. The driving mechanism can be a cylinder or an electric push rod. Both methods can realize fast and reliable door opening and closing actions. A certain gap is left at the bottom of the peripheral protective cover 9 for the second sliding seat 5 to move, ensuring that it will not affect its normal operation.

[0044] A pedal mechanism 11 is provided on one side of the base 1 close to the automatic door mechanism 10 , and after a worker stands on the pedal mechanism 11 , it is convenient to observe the state and processing progress of the workpiece.

[0045] Continue to refer to Figure 1In order to further optimize the layout and space utilization of the equipment, a motion space 91 for the second sliding seat 5 to move is set between the end of the outer protective cover 9 and the first sliding seat 2. This motion space 91 not only ensures the smooth movement of the second sliding seat 5, but also can accommodate additional auxiliary equipment, such as a coolant recovery mechanism and a chip processing mechanism, to further enhance the functionality and environmental protection of the equipment. The motion space 91 is located at the front end of the outer protective cover 9. Through appropriate structural adjustments, sufficient height and width are ensured to accommodate the second sliding seat 5 and its related accessories. A sealing strip is provided at the entrance of the motion space 91, which can be automatically adjusted when the second sliding seat 5 moves to maintain the sealing effect. In addition, a coolant circulation pump and a filter are also provided in the motion space 91, which are connected to the coolant storage tank on the base 1 through a pipeline to achieve continuous supply and recovery during the processing process. The chip processing mechanism includes a chip collecting trough and a conveyor belt. The chip collecting trough is installed under the base 1 to collect the chips generated during the processing, and then transport them to a designated location through a conveyor belt for centralized processing.

[0046] The implementation principle of this embodiment is: through one-time clamping of the workpiece, multi-faceted milling processing is realized, the production time is greatly shortened, and the processing time is greatly reduced by using advanced tools and high-speed processing technology. At the same time, by optimizing the selection and configuration of each drive mechanism, efficient automatic tool change is achieved, and the overall processing efficiency and accuracy are improved. The broken tool detection component 83 monitors the tool status in real time, warns of potential tool problems in advance, reduces production interruptions and quality losses caused by tool damage, and improves the safety and reliability of processing. The tool magazine protective cover 84 effectively isolates the tool magazine area to prevent external pollution and safety hazards, and ensures the long-term stable operation of the equipment. The peripheral protective cover 9 forms a closed working environment, effectively isolates external interference, and improves the stability and safety of the equipment. The motion space 91 solves the problem of barrier-free movement of the second sliding seat 5, makes full use of limited space resources, integrates multiple auxiliary functions, and improves the comprehensive performance and environmental protection standards of the equipment.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A five-axis high-speed and high-precision machining center, characterized by: The invention comprises a base (1), a first sliding seat (2), a first sliding drive mechanism, a lifting seat (3), a lifting drive mechanism (4), a second sliding seat (5), a second sliding drive mechanism, a processing spindle (6), a cradle-type turntable (7) and an automatic tool changing mechanism (8); the cradle-type turntable (7) is arranged on the base (1), and the cradle-type turntable (7) has at least two rotational degrees of freedom, and is used to realize the processing of the workpiece at multiple angles; the first sliding seat (2) and the base (1) are slidingly matched, the first sliding drive mechanism is arranged on the base (1), and the first sliding drive mechanism is used to drive the first sliding seat (2) to move along a first direction; the lifting seat (3) and the first sliding seat (2 ) slidingly cooperate with each other, the lifting drive mechanism (4) is arranged on the first sliding seat (2), and the lifting drive mechanism (4) is used to drive the lifting seat (3) to rise and fall; the second sliding seat (5) and the lifting seat (3) are slidingly cooperated, the second sliding drive mechanism is arranged on the lifting seat (3), and the second sliding drive mechanism is used to drive the second sliding seat (5) to move along a second direction, the processing spindle (6) is arranged on the second sliding seat (5), so that the processing spindle (6) moves toward or away from the cradle-type turntable (7); the automatic tool changing mechanism (8) is arranged on the base (1), and the automatic tool changing mechanism (8) is used to automatically change the tool of the processing spindle (6).

2. A five-axis high-speed and high-precision machining center according to claim 1, characterized in that: The automatic tool changing mechanism (8) comprises a mounting frame (81) and a tool magazine assembly (82); the mounting frame (81) comprises a top frame (811) and two support frames (812); the bottom end of each support frame (812) is fixedly connected to the base (1); the two ends of the top frame (811) are respectively fixedly connected to the top ends of the two support frames (812); the tool magazine assembly (82) is arranged on a side of the top frame (811) close to the cradle-type turntable (7).

3. A five-axis high-speed and high-precision machining center according to claim 2, characterized in that: The side of the mounting frame (81) facing the cradle-type turntable (7) and the side of the mounting frame (81) away from the cradle-type turntable (7) are both arranged in an open manner.

4. A five-axis high-speed and high-precision machining center according to claim 2, characterized in that: A plurality of mutually intersecting reinforcing rods (813) are arranged inside the support frame (812), and a plurality of triangles are formed between the plurality of reinforcing rods (813) and the support frame (812).

5. The five-axis high-speed and high-precision machining center according to claim 2, characterized in that: The tool magazine component (82) is provided with a broken tool detection component (83).

6. A five-axis high-speed and high-precision machining center according to claim 2, characterized in that: The automatic tool changing mechanism (8) further comprises a tool magazine protective cover (84), wherein the tool magazine protective cover (84) is fixed on the mounting frame (81), and the tool magazine assembly (82) is located inside the tool magazine protective cover (84).

7. The five-axis high-speed and high-precision machining center according to claim 1, characterized in that: An outer protective cover (9) is arranged on the base (1); the first sliding seat (2), the first sliding drive mechanism, the lifting seat (3), the lifting drive mechanism (4), the second sliding seat (5), the second sliding drive mechanism, the processing spindle (6), the cradle-type turntable (7) and the automatic tool changing mechanism (8) are all located inside the outer protective cover (9); an observation port and an automatic door mechanism (10) are provided on one side of the outer protective cover (9) close to the turntable of the cradle-type turntable (7).

8. A five-axis high-speed and high-precision machining center according to claim 7, characterized in that: The automatic door mechanism (10) comprises a sliding door and a driving mechanism, wherein the sliding door is slidably matched with the outer protective cover (9), and the driving mechanism is arranged on the outer protective cover (9), and the driving mechanism is used to drive the sliding door to slide in a horizontal direction.

9. A five-axis high-speed and high-precision machining center according to claim 8, characterized in that: A movement space (91) for the second sliding seat (5) to move is provided between the end of the outer protective cover (9) and the first sliding seat (2).

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