A double-spindle double-tool turret numerical control machine tool

Abstract

The utility model discloses a double main shaft double knife tower numerical control machine tool, including frame, first processing device and second processing device. Frame is equipped with two parallel X axle guide rails. First processing device includes the first main shaft mechanism fixed in first X axle guide rail one end and sets up first knife tower mechanism on it, and first knife tower mechanism can move along X, Y axle. Second processing device includes setting up second knife tower mechanism on second X axle guide rail and second main shaft mechanism can move along X axle, and second main shaft mechanism is coaxial with first main shaft mechanism and sets up. Through coaxial double main shaft design has realized workpiece automatic transfer and seamless butt joint between two main shafts, and can complete workpiece double -end continuous processing without manual intervention, through the independent or synchronous processing capacity of double knife tower, can process different workpiece respectively to improve equipment utilization rate, can also process the two ends of the same workpiece in cooperation to shorten single piece processing time greatly, has improved production efficiency and automation level obviously.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a dual-spindle dual-turret CNC machine tool. Background Technology

[0002] In the field of CNC machine tool processing technology, most existing CNC machine tools typically adopt a single spindle and single turret structure, which can only process one end of a workpiece at a time. When the other end of the workpiece needs to be processed, the operator must manually unload, turn, and reclamp the workpiece, which not only increases labor intensity and clamping errors but also seriously affects processing efficiency and consistency. Although some machine tools have dual-spindle or dual-turret configurations, they are often structurally complex and lack coordination, lacking the ability to automatically transfer workpieces between spindles and perform synchronous processing on both turrets, making it difficult to achieve efficient continuous production. Therefore, there is an urgent need for a new type of CNC machine tool structure that can automatically transfer workpieces and perform processing on both ends without manual intervention, while supporting collaborative operation of dual turrets, to significantly improve equipment utilization and the level of production automation. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a dual-spindle, dual-turret CNC machine tool. Through the independent or synchronous machining capabilities of the dual turrets, it can process different workpieces separately to improve equipment utilization, and can also process both ends of the same workpiece collaboratively to significantly shorten the single-piece machining time, thereby significantly improving production efficiency and automation level.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A dual-spindle, dual-turret CNC machine tool, including The base has a first X-axis guide rail and a second X-axis guide rail that are parallel to each other on the top surface; The first processing device includes a first spindle mechanism fixed to one end of the first X-axis guide rail and a first turret mechanism disposed on the first X-axis guide rail. The first spindle mechanism includes a first clamping component for clamping a workpiece and a first spindle box for driving the first clamping component to rotate. The first turret mechanism includes a first turret assembly for mounting a tool, a first X-axis motion assembly for driving the first turret assembly to move along the first X-axis guide rail, and a first Y-axis motion assembly for driving the first turret assembly to move along the Y-axis. The second machining device includes a second turret mechanism and a second spindle mechanism mounted on the second X-axis guide rail. The second turret mechanism is located on one side of the first spindle mechanism and includes a second turret assembly for mounting a tool, a second X-axis motion assembly for driving the turret assembly to move along the second X-axis guide rail, and a second Y-axis motion assembly for driving the second turret assembly to move along the Y-axis. The second spindle mechanism is located on one side of the first turret mechanism and includes a second clamping component for clamping a workpiece, a second spindle box for driving the second clamping component to rotate, and a third X-axis motion assembly for driving the second spindle box to move along the second X-axis guide rail. The second spindle box is coaxially arranged with the first spindle box so that the workpiece can be transferred between the first clamping component and the second clamping component.

[0005] A dual-spindle, dual-turret CNC machine tool according to an embodiment of this utility model has at least the following beneficial effects: An innovative combination of a coaxially arranged second spindle mechanism movable along the X-axis and a fixed first spindle mechanism constructs a seamlessly connected dual machining unit. This layout allows the workpiece to be directly and accurately received and transferred by the second spindle mechanism after one end of the workpiece has been machined by the first spindle, realizing automatic workpiece transfer and flipping within the machine. This completely eliminates the positioning errors, time waste, and labor intensity problems caused by manual secondary clamping in traditional machining, greatly ensuring the consistency of machining accuracy and the continuity of production. Meanwhile, the parallel and independent first and second X-axis guideways provide dedicated motion channels for the two turret mechanisms, enabling the two turret components to work independently, processing different workpieces separately and significantly improving equipment utilization; they can also work collaboratively, simultaneously performing composite processing on the other end of the same workpiece on the second spindle mechanism. Through the synchronous cutting operation of the dual turrets, the total processing time of a single workpiece is significantly shortened, thereby greatly improving the overall production efficiency and automation level of the machine tool. It is particularly suitable for the large-scale, high-precision production needs of disc and shaft parts that require double-end processing.

[0006] According to some embodiments of the present invention, the first turret assembly includes a first cutter head and a first Z-axis lifting assembly for driving the first cutter head to rise and fall.

[0007] The advantage is that by setting the first Z-axis lifting assembly to drive the first tool head, the first tool turret gains a vertical degree of machining freedom, enabling it to perform more complex three-dimensional machining tasks such as milling, drilling, and tapping, which significantly enhances the machine tool's process capability and machining flexibility.

[0008] According to some embodiments of the present invention, the second turret assembly includes a second cutter head and a second Z-axis lifting assembly for driving the second cutter head to rise and fall.

[0009] The advantage is that by adding a second Z-axis lifting component to the second turret assembly, it also has Z-axis machining capability, ensuring that both turrets can complete complex three-dimensional cutting processes when machining the same workpiece in collaboration, thus guaranteeing the symmetry and comprehensiveness of the dual turret machining capabilities.

[0010] According to some embodiments of the present invention, the first X-axis motion component, the first Y-axis motion component, the second X-axis motion component, the second Y-axis motion component, the third X-axis motion component, the first Z-axis lifting component, and the second Z-axis lifting component are all motor lead screw slide mechanisms.

[0011] The advantage is that this claim specifies all motion components as a motor lead screw slide mechanism, providing the machine tool with a high-rigidity, high-precision and high-reliability motion realization method, ensuring the positioning accuracy and stability of each component under long-term repetitive motion, thereby guaranteeing the overall machining quality.

[0012] According to some embodiments of the present invention, the first spindle mechanism further includes a first mounting base, and the first clamping component is disposed on the side of the first mounting base facing the second X-axis guide rail.

[0013] The advantage is that the setting and orientation of the first mounting base ensures that the workpiece held by the first spindle can naturally face the machining area, providing optimal spatial orientation and accessibility for turret machining and docking with the second spindle, and simplifying the transfer path.

[0014] According to some embodiments of the present invention, the second spindle mechanism further includes a second mounting base, and the second clamping component is disposed on the side of the second mounting base facing the first X-axis guide rail.

[0015] The advantages are that the second mounting base and its orientation design ensure that the second spindle clamping component is directly facing the workpiece transfer direction, achieving precise and smooth workpiece transfer with the first spindle, while providing the best operating space for turret machining.

[0016] According to some embodiments of the present invention, the first clamping component and the second clamping component are chucks or internal support clamps.

[0017] The advantages are: by specifying the clamping components as chucks or internal support fixtures, the workpiece adaptability range of the machine tool is expanded, and it can stably clamp blanks of various shapes, from solid bars to hollow tubes, thereby enhancing the versatility and application areas of the equipment.

[0018] According to some embodiments of the present invention, both the first spindle box and the second spindle box are driven by servo motors.

[0019] The advantages are: by using a servo motor to drive the spindle box, precise and stepless control of the spindle speed and rotation angle can be achieved, supporting advanced machining functions such as precision turning, milling, and directional indexing, thus improving the machine tool's technological level.

[0020] According to some embodiments of the present invention, the top surface of the base is an inclined surface, and the first X-axis guide rail and the second X-axis guide rail are arranged horizontally from bottom to top on the inclined surface.

[0021] The advantages are: by making the top surface of the machine base inclined and installing the guide rail horizontally, the machine structure becomes more compact, and the chips and coolant generated during the processing can slide off naturally under the action of gravity, effectively avoiding accumulation on the worktable, facilitating chip removal, and keeping the processing area clean.

[0022] According to some embodiments of this utility model, drainage grooves are provided on both sides of the base.

[0023] The benefits are that by adding drainage channels on both sides of the tilting base, a highly efficient coolant recovery and discharge system is constructed, which can quickly divert chips and coolant, further optimize the chip removal effect, and maintain a clean and safe working environment.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of an embodiment of the present utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Enlarged diagram of point B in the middle.

[0027] Reference numerals: base 100, first X-axis guide rail 110, second X-axis guide rail 120, first spindle mechanism 130, first turret mechanism 140, first clamping component 150, first spindle box 160, first turret assembly 170, first X-axis motion assembly 180, first Y-axis motion assembly 190, second turret mechanism 200, second spindle mechanism 210, second turret assembly 220, second X-axis motion assembly 230, second Y-axis motion assembly 240, second clamping component 250, second spindle box 260, third X-axis motion assembly 270, first tool head 280, first Z-axis lifting assembly 290, second tool head 300, second Z-axis lifting assembly 310, first mounting base 320, second mounting base 330, drainage groove 340. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] The following is for reference. Figures 1-3 A dual-spindle, dual-turret CNC machine tool is described in detail with reference to a specific embodiment. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0030] like Figures 1-3 As shown in the figure, this application embodiment proposes a dual-spindle dual-turret CNC machine tool, including a machine base 100, a first machining device, and a second machining device.

[0031] The machine base 100 has a first X-axis guide rail 110 and a second X-axis guide rail 120 that are parallel to each other on its top surface. The first machining device includes a first spindle mechanism 130 fixed to one end of the first X-axis guide rail 110 and a first turret mechanism 140 disposed on the first X-axis guide rail 110. The first spindle mechanism 130 includes a first clamping component 150 for clamping a workpiece and a first spindle box 160 for driving the first clamping component 150 to rotate. The first turret mechanism 140 includes a first turret assembly 170 for mounting a tool, a first X-axis motion assembly 180 for driving the first turret assembly 170 to move along the first X-axis guide rail 110, and a first Y-axis motion assembly 190 for driving the first turret assembly 170 to move along the Y-axis. The second machining device includes a second turret mechanism 20 disposed on the second X-axis guide rail 120. The first spindle mechanism 130 includes a second spindle assembly 220 for mounting tools, a second X-axis motion assembly 230 for driving the turret assembly to move along the second X-axis guide rail 120, and a second Y-axis motion assembly 240 for driving the second turret assembly 220 to move along the Y-axis. The second spindle mechanism 210 is located on one side of the first spindle mechanism 140 and includes a second clamping member 250 for clamping workpieces, a second spindle box 260 for driving the second clamping member 250 to rotate, and a third X-axis motion assembly 270 for driving the second spindle box 260 to move along the second X-axis guide rail 120. The second spindle box 260 is coaxially arranged with the first spindle box 160 so that the workpiece can be transferred between the first clamping part and the second clamping part.

[0032] Specifically, the second turret mechanism 200 in the second machining device is located on one side of the first spindle mechanism 130. Its second turret assembly 220 moves along the second X-axis guide rail 120 via the second X-axis motion assembly 230, and uses the second Y-axis motion assembly 240 to position the tool required for machining the other end. The second spindle mechanism 210 is located on one side of the first turret mechanism 140. Its second clamping component 250 is coaxially arranged with the first clamping component 150, and the second spindle box 260 moves along the second X-axis guide rail 120 via the third X-axis motion assembly 270, so that the workpiece can be automatically transferred between the first clamping component 150 and the second clamping component 250, completing the double-end machining of the workpiece without manual intervention. The coaxial design of the first spindle box 160 and the second spindle box 260 ensures the axial alignment of the workpiece during the transfer process, avoiding machining quality problems caused by clamping errors. Meanwhile, the first turret mechanism 140 and the second turret mechanism 200 are each equipped with independent motion components, allowing the two turrets to perform different processing operations simultaneously, which significantly improves processing efficiency.

[0033] An innovative combination of a coaxially mounted, movable second spindle mechanism 210 along the X-axis and a fixed first spindle mechanism 130 creates a seamless dual-machining unit. This layout allows the workpiece to be directly and accurately received and transferred by the second spindle mechanism 210 after one end of the workpiece has been machined on the first spindle. This achieves automatic workpiece transfer and flipping within the machine, completely eliminating the positioning errors, time waste, and labor intensity problems caused by manual secondary clamping in traditional machining, greatly ensuring the consistency of machining accuracy and the continuity of production. Simultaneously, the parallel and independent first and second X-axis guideways 120 provide dedicated motion channels for the two turret mechanisms, enabling the two turret components to work independently, machining different workpieces and significantly improving equipment utilization; or to work collaboratively, simultaneously performing composite machining on the other end of the same workpiece on the second spindle mechanism 210. Through the synchronous cutting operation of the dual turrets, the total machining time for a single workpiece is significantly shortened, thereby greatly improving the overall production efficiency and automation level of the machine tool. This is particularly suitable for the large-scale, high-precision production needs of disc and shaft parts requiring double-end machining.

[0034] like Figure 2 and Figure 3 As shown, the first turret assembly 170 includes a first tool head 280 and a first Z-axis lifting assembly 290 for driving the first tool head 280 to rise and fall. The second turret assembly 220 includes a second tool head 300 and a second Z-axis lifting assembly 310 for driving the second tool head 300 to rise and fall. The first tool head 280 and the second tool head 300 serve as a centralized tool mounting platform and can adopt a disc-shaped or polygonal structure, providing a stable and flexible tool configuration foundation. The first Z-axis lifting assembly 290 and the second Z-axis lifting assembly 310, as independent vertical transmission mechanisms, achieve lifting functions through motor screw slides, hydraulic or pneumatic methods, giving each tool head independent height adjustment capabilities. It should be noted that the first tool head 280 and the second tool head 300 should be equipped with a motor for tool switching and a motor for driving tool rotation.

[0035] Specifically, the first X-axis motion assembly 180, the first Y-axis motion assembly 190, the second X-axis motion assembly 230, the second Y-axis motion assembly 240, the third X-axis motion assembly 270, the first Z-axis lifting assembly 290, and the second Z-axis lifting assembly 310 are all motor-driven ball screw slide mechanisms. Specifically, a motor-driven ball screw slide mechanism is a transmission device that converts the rotational motion of a motor into linear motion, mainly composed of a servo motor, a ball screw, and a slide. In practical applications, this mechanism can achieve different transmission ratios and accuracy requirements by selecting ball screws of different specifications; for example, high-precision ground ball screws can be used to meet micron-level positioning requirements. Its purpose is to reduce the risk of error accumulation in multi-axis linkage scenarios through standardized design and to improve the overall stability and ease of maintenance of the equipment. This direct drive method eliminates intermediate links such as traditional gearboxes, which not only simplifies the mechanical structure but also reduces the number of potential failure points, thereby ensuring the stable performance of the equipment during long-term operation. Based on this, the above solution also provides reliable motion control for the automatic transfer of workpieces between the two spindles, enabling each actuator to cooperate precisely in complex trajectory planning, and ultimately achieving the overall goal of efficient and continuous production.

[0036] like Figure 1 As shown, the first spindle mechanism 130 also includes a first mounting base 320, and a first clamping component 150 is disposed on the side of the first mounting base 320 facing the second X-axis guide rail 120. The second spindle mechanism 210 also includes a second mounting base 330, and a second clamping component 250 is disposed on the side of the second mounting base 330 facing the first X-axis guide rail 110. The first mounting base 320 and the second mounting base 330, as structural components made of high-strength materials, are fixed to the machine base 100 and the second spindle box 260 respectively by bolting or welding, providing a stable mounting foundation and rigid support for the clamping components. This scheme, through a symmetrical layout design, places the two clamping components on opposite sides of their respective mounting bases, ensuring precise axial alignment of the first clamping component 150 and the second clamping component 250, forming an optimal short-distance workpiece transfer path. This layout not only significantly shortens the workpiece transfer stroke between the two spindles and improves production efficiency, but more importantly, it ensures that the workpiece maintains precise coaxial alignment during transfer, greatly improving docking accuracy and reliability. The rigid structure of the first mounting base 320 and the second mounting base 330 effectively suppresses vibration during machining, reduces clamping deviation, and provides a solid foundation for high-precision machining. Simultaneously, this orientation design optimizes the spatial layout of the machining area, providing ample clearance for the turret mechanism's motion path planning and effectively avoiding machining interference. This design perfectly solves the problems of excessively long workpiece transfer paths, insufficient positioning accuracy, and poor clamping stability in traditional layouts, significantly enhancing the collaborative operation capability and machining continuity of the dual-spindle system, and providing a key guarantee for achieving fully automated and efficient production.

[0037] Based on the aforementioned dual-spindle, dual-turret CNC machine tool, the first clamping component 150 and the second clamping component 250 are chucks or internal support fixtures. Specifically, a chuck is a device that clamps the outer diameter of a workpiece through the radial movement of multiple jaws; it can be a three-jaw chuck, a four-jaw chuck, or a hydraulically powered chuck. Three-jaw chucks are suitable for automatic centering clamping of circular workpieces, four-jaw chucks are more suitable for clamping non-circular or eccentric workpieces, and hydraulically powered chucks can provide greater clamping force and higher clamping accuracy. An internal support fixture is a device that applies support force to the inner hole of a workpiece through an internal expansion mechanism; it can be implemented using an elastic expansion sleeve fixture, a hydraulic expansion mandrel, or a mechanical expansion clamping fixture. Elastic expansion sleeve fixtures are suitable for flexible support of thin-walled workpieces, hydraulic expansion mandrels can provide high-precision inner hole positioning and clamping, and mechanical expansion clamping fixtures are suitable for stable clamping of large-sized workpieces. In detail, the design of the first clamping component 150 and the second clamping component 250 aims to solve the adaptability problem of workpieces with different shapes or sizes. By introducing two optional forms, a chuck and an internal support fixture, the machine tool can flexibly handle workpiece clamping scenarios with various geometric features. For example, when machining shaft parts, a three-jaw chuck can be selected for external diameter clamping; while when machining thin-walled cylindrical parts, a hydraulic expansion mandrel can be used for internal hole support. This design not only ensures clamping rigidity but also reduces the risk of workpiece displacement caused by a single clamping method, thereby improving the stability and accuracy during machining. In addition, since the first spindle box 160 and the second spindle box 260 are coaxially arranged, this clamping mode can also ensure that the workpiece maintains a high degree of coaxiality during the transfer between spindles, providing a basic guarantee for subsequent dual-spindle collaborative machining.

[0038] It should be noted that both the first spindle box 160 and the second spindle box 260 are driven by servo motors. A servo motor is a type of motor with high-precision position control capabilities, which can be implemented using a permanent magnet synchronous servo motor or an AC asynchronous servo motor. In practical applications, the servo motor forms a closed-loop control through an encoder feedback system, enabling real-time adjustment of output speed and position. The purpose of introducing this technical feature is to improve the dynamic response performance and positioning accuracy of the spindle system, providing a reliable guarantee for the precise handover of workpieces between the two spindles. Specifically, both the first spindle box 160 and the second spindle box 260 use servo motors as drive sources, achieving precise speed control through a high-precision encoder feedback mechanism. This configuration ensures that the first clamping component 150 and the second clamping component 250 achieve micron-level angular positioning accuracy during workpiece handover, effectively avoiding the risk of workpiece collision due to spindle phase deviation. Simultaneously, the servo motor has rapid start-stop characteristics, completing speed switching within milliseconds, providing timely response for the coordinated spindle movements in dual-turret synchronous machining. The above technical solution not only solves the problems of insufficient speed control accuracy and lag in dynamic response of ordinary motor drives, but also significantly improves the stability and processing efficiency of workpiece handover between the two spindles.

[0039] It is worth mentioning that, such as Figure 1 As shown, the top surface of the machine base 100 is an inclined surface, with the first X-axis guide rail 110 and the second X-axis guide rail 120 arranged horizontally from bottom to top on the inclined surface. In practical applications, an inclined surface refers to the top surface of the machine base 100 being designed with a certain angle. This can be achieved by machining to form a precise angled surface, or by using assembly compensation technology to achieve horizontal calibration of the guide rail mounting surface. The aim is to optimize chip flow performance and improve space utilization. Specifically, this design, by making the top surface of the machine base 100 an inclined surface, allows metal chips generated during cutting to naturally slide down the inclined surface to the collection area by gravity, thus avoiding the chip accumulation problem common in traditional horizontal top surface structures. Based on this, the first X-axis guide rail 110 and the second X-axis guide rail 120 are arranged in a stepped manner from bottom to top, achieving a stacked layout of the dual guide rail system on the inclined base. This design not only effectively reduces the overall height of the machine tool but also balances the influence of gravity on cutting vibration through the cooperation of the inclined base and the horizontal guide rails, thereby improving the surface quality of the machined part. Furthermore, the design of the inclined surface, combined with the dual-spindle dual-turret structure, makes the automatic transfer of the workpiece between the first clamping component 150 and the second clamping component 250 smoother. At the same time, it supports the dual-turret mechanism to perform efficient composite machining on the inclined surface, further improving the space utilization and production efficiency of the equipment.

[0040] It should be added that drainage channels 340 are provided on both sides of the machine base 100. Specifically, the drainage channels 340 refer to the groove structures set on both sides of the machine base 100 for collecting and discharging chips and coolant. They can be implemented using a straight, arc, or combined channel design. In practical applications, the opening direction of the drainage channels 340 and the inclined direction of the top surface of the machine base 100 form a spatial intersection, thereby integrating the dispersed liquid flow into a directional discharge path. The purpose is to reduce the reliance on mechanical chip removal devices through gravitational potential energy, while improving the self-cleaning capability of the machine tool environment. In detail, this technical solution, by setting drainage channels 340 on both sides of the machine base 100, together with the inclined top surface, forms a three-dimensional chip removal system. The inclined top surface causes chips and coolant to flow downwards along the direction of gravity, while the drainage channels 340 act as liquid collection channels, guiding chips and coolant to the designated discharge area. This design is particularly suitable for dual-spindle synchronous machining scenarios, and can effectively address the challenges of controlling multi-directional splashing chips and coolant. Combining the overall structure of the aforementioned dual-spindle dual-turret CNC machine tool, this design not only improves the stability of equipment operation but also optimizes the dynamic cleaning effect of the processing environment.

[0041] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A dual-spindle dual-turret CNC machine tool, characterized by, include: The base (100) has a first X-axis guide rail (110) and a second X-axis guide rail (120) that are parallel to each other on the top surface. The first processing device includes a first spindle mechanism (130) fixed to one end of the first X-axis guide rail (110) and a first turret mechanism (140) disposed on the first X-axis guide rail (110). The first spindle mechanism (130) includes a first clamping component (150) for clamping a workpiece and a first spindle box (160) for driving the first clamping component (150) to rotate. The first turret mechanism (140) includes a first turret assembly (170) for mounting a cutting tool, a first X-axis motion assembly (180) for driving the first turret assembly (170) to move along the first X-axis guide rail (110), and a first Y-axis motion assembly (190) for driving the first turret assembly (170) to move along the Y-axis. The second machining device includes a second turret mechanism (200) and a second spindle mechanism (210) mounted on the second X-axis guide rail (120). The second turret mechanism (200) is located on one side of the first spindle mechanism (130) and includes a second turret assembly (220) for mounting tools, a second X-axis motion assembly (230) for driving the turret assembly to move along the second X-axis guide rail (120), and a second Y-axis motion assembly (240) for driving the second turret assembly (220) to move along the Y-axis. The second spindle mechanism (210) is located on the first spindle mechanism (130). On one side of the first turret mechanism (140), there are a second spindle mechanism (210) for holding a workpiece, a second clamping component (250) for driving the second clamping component (250) to rotate, and a third X-axis motion assembly (270) for driving the second spindle box (260) to move along the second X-axis guide rail (120). The second spindle box (260) is coaxially arranged with the first spindle box (160) so that the workpiece can be transferred between the first clamping component (150) and the second clamping component (250).

2. The dual-spindle dual-turret CNC machine tool according to claim 1, characterized in that, The first turret assembly (170) includes a first cutter head (280) and a first Z-axis lifting assembly (290) for driving the first cutter head (280) to rise and fall.

3. The dual-spindle dual-turret CNC machine tool of claim 2, wherein, The second turret assembly (220) includes a second cutter head (300) and a second Z-axis lifting assembly (310) for driving the second cutter head (300) to rise and fall.

4. The dual-spindle dual-turret CNC machine tool of claim 3, wherein, The first X-axis motion component (180), the first Y-axis motion component (190), the second X-axis motion component (230), the second Y-axis motion component (240), the third X-axis motion component (270), the first Z-axis lifting component (290), and the second Z-axis lifting component (310) are all motor lead screw slide mechanisms.

5. The dual-spindle dual-turret CNC machine tool of claim 1, wherein, The first spindle mechanism (130) also includes a first mounting base (320), and the first clamping member (150) is disposed on the side of the first mounting base (320) facing the second X-axis guide rail (120).

6. A dual-spindle dual-turret CNC machine tool according to claim 5, characterized in that, The second spindle mechanism (210) also includes a second mounting base (330), and the second clamping member (250) is disposed on the side of the second mounting base (330) facing the first X-axis guide rail (110).

7. The dual-spindle dual-turret CNC machine tool of claim 1, wherein, The first clamping component (150) and the second clamping component (250) are chucks or internal support clamps.

8. The dual-spindle dual-turret CNC machine tool of claim 1, wherein, Both the first spindle box (160) and the second spindle box (260) are driven by servo motors.

9. The dual-spindle dual-turret CNC machine tool of claim 1, wherein, The top surface of the base (100) is an inclined surface, and the first X-axis guide rail (110) and the second X-axis guide rail (120) are arranged horizontally from bottom to top on the inclined surface.

10. The dual-spindle dual-turret CNC machine tool of claim 9, wherein, The base (100) is provided with drainage grooves (340) on both sides.

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