Double-spindle turning and milling combined machining center and control method

Abstract

The invention relates to the technical field of turning and milling machining, in particular to a double-spindle turning and milling combined machining center and a control method. The machining center comprises a base, a turning mechanism, a milling mechanism, a tool changing mechanism and a tool magazine; the turning mechanism and the milling mechanism are distributed on the base side by side in the Y-axis direction. The tool magazine is fixedly mounted on one side of the milling mechanism, a plurality of tools are detachably mounted on the tool magazine, and the tools circularly rotate along the edge of the tool magazine; and the tool changing mechanism is mounted above the turning mechanism, and the tool changing mechanism is used for moving between the milling mechanism and the tool magazine and is matched with the tool machining shaft to realize automatic tool changing. The technical problems that in the prior art, lathing and milling mostly depend on independent equipment to be implemented step by step, so that the machining precision is low, and the machining quality is poor can be solved.

Description

Technical Field

[0001] This invention relates to the field of milling and turning technology, and in particular to a dual-spindle milling and turning machining center and its control method. Background Technology

[0002] In the field of CNC machining, the machining of complex structural workpieces (such as shaft parts with complex curved surfaces and groove structures) often requires multiple processes such as turning and milling to be completed in tandem. In existing technologies, turning and milling processes mostly rely on independent equipment to be carried out step by step. The workpiece needs to be repeatedly disassembled and clamped between the lathe and the milling machine, which not only increases the time consumption, but also causes positioning errors due to multiple clamping, making it difficult to guarantee machining accuracy. At the same time, traditional machining equipment is mostly a single spindle structure, which is prone to coaxiality deviation and wobbling problems when clamping long workpieces, further affecting the machining quality. In addition, existing tool changing mechanisms mostly adopt a step-by-step operation mode of "removing the old tool first and then picking up the new tool". During the tool changing process, the equipment needs to be stopped for a long time, resulting in low machining efficiency; and the collection of cutting fluid and waste chips is not smooth during the machining process, which can easily cause equipment pollution and affect the machining environment. These problems all restrict the realization of the demand for high-precision and high-efficiency machining. Summary of the Invention

[0003] One objective of this invention is to propose a dual-spindle turning-milling composite machining center to solve the technical problem that in the prior art, turning and milling processes often rely on separate equipment and are carried out in steps, resulting in low machining accuracy and poor machining quality.

[0004] Another objective of this invention is to provide a control method for a dual-spindle milling and turning machining center as described above.

[0005] To achieve this objective, the present invention adopts the following technical solution: A dual-spindle turning-milling machining center includes a base, a turning mechanism, a milling mechanism, a tool changing mechanism, and a tool magazine; The turning mechanism and the milling mechanism are arranged side by side on the base along the Y-axis; the tool magazine is fixedly installed on one side of the milling mechanism, and several tools are detachably installed on the tool magazine, and the tools rotate cyclically along the edge of the tool magazine; the tool changing mechanism is installed above the turning mechanism, and the tool changing mechanism is used to move between the milling mechanism and the tool magazine, and cooperates with the tool machining axis to realize automatic tool changing; The machining mechanism includes a machining moving component and two machining components horizontally facing each other along the Y-axis. Each machining component is provided with a machining shaft. The machining moving component is driven to one of the machining components to drive it to move closer to or away from the other machining component, so as to clamp and release the workpiece to be processed. Each machining component is provided with a machining shaft rotation drive structure to drive its own machining shaft to rotate around the Y-axis. The milling mechanism includes a tool moving assembly, a tool driving assembly, and a tool machining axis. The tool driving assembly is mounted on the moving end of the tool moving assembly, and the tool machining axis is mounted on the output end of the tool driving assembly. The tool moving assembly is used to drive the tool driving assembly and the tool machining axis to move independently along the X-axis, Y-axis, and Z-axis. The tool driving assembly includes a tool swing driving unit and a tool rotation driving unit. The tool swing driving unit is used to drive the tool machining axis to swing around the X-axis. The tool machining axis can be detachably connected to a tool. The tool rotation driving unit is used to drive the tool machining axis and the tool to rotate around their own axis.

[0006] Preferably, the base has a first surface and a second surface that is connected at an angle to the first surface. The first surface is inclined to the ground, and the second surface is parallel to the ground. The turning mechanism is located on the first surface, and the milling mechanism is located on the second surface. The first surface extends outward along its own plane from the edge away from the second surface to form a liquid guiding surface. The edges of the base, except for the liquid guiding surface, are vertically surrounded by a blocking wall. The upper end of the liquid guiding surface forms a liquid guiding port, and a chipping machine is placed at the extension of the liquid guiding port.

[0007] Preferably, the machining mechanism further includes a machining platform, which includes a transverse platform, a placement platform, and multiple support platforms; The placement platform is fixedly set at one end of the horizontal platform, the top ends of the plurality of support platforms are spaced apart at the lower end of the horizontal platform, the bottom ends of the plurality of support platforms are spaced apart at the second surface of the base, a drainage channel is formed between the plurality of support platforms, and the horizontal platform is provided with a drainage port for the drainage channel. One of the car processing components is fixedly mounted on the placement platform, and the other car processing component is slidably mounted on the transverse platform via the car moving component.

[0008] Preferably, the machining assembly includes a housing and a three-jaw chuck, and the machining axis rotation drive structure is a machining axis rotation drive motor; The housing is fixedly installed on the machining platform or slidably installed on the car moving assembly. The machining shaft rotation drive motor is installed inside the housing. The machining shaft is connected to the housing and is driven by the output end of the machining shaft rotation drive motor. The three-jaw chuck is located on the end face of the machining shaft.

[0009] Preferably, the tool changing mechanism includes a tool changing moving component and a tool changing driving component. The tool changing driving component is installed on the moving end of the tool changing moving component. The tool changing moving component is used to drive the tool changing driving component to move between the milling mechanism and the tool magazine. The tool changing driving component is used to grab and release the tool, thereby cooperating with the tool machining axis to realize automatic tool changing. The tool changer drive assembly includes a tool changer bracket, a tool changer drive cylinder, a straight rack, a tool changer transmission gear, and a tool changer chuck. The tool changer bracket is fixedly installed on the moving end of the tool changer moving assembly. The tool changer bracket includes a main bracket, and one side of the main bracket is provided with two bracket side wings extending in the same direction. The tool changer drive cylinder is fixedly installed on the main support, and the output end of the tool changer drive cylinder is connected to the straight rack. The tool changing transmission gear and the tool changing chuck are rotatably mounted between the two side wings of the bracket via a rotating shaft. The tool changing chuck has an L-shaped structure, and each end of the L-shaped structure is provided with a chuck. The middle end of the L-shaped structure is fixedly connected to part of the outer wheel surface of the tool changing transmission gear, and the remaining outer wheel surface of the tool changing transmission gear meshes with the straight rack for transmission.

[0010] Preferably, the tool oscillation drive unit includes a turntable and an oscillation machining axis motor; The tool rotation drive unit is a rotary machining axis motor; One side of the turntable is rotatably mounted on the tool moving center seat, and the other side of the turntable is fixedly mounted on the swing machining axis motor. The oscillating machining axis motor is installed on the side of the tool moving center seat opposite to the turntable. The output end of the oscillating machining axis motor is fixedly connected to the center of the turntable through gear transmission. The turntable can oscillate around the X-axis under the drive of the oscillating machining axis motor. The tool machining axis is mounted on the output end of the rotary machining axis motor, and the tool machining axis can rotate around its own axis under the drive of the rotary machining axis motor.

[0011] Preferably, the tool magazine includes a circulating rotation assembly and a plurality of tool holders, the plurality of tool holders being evenly distributed on the edge of the circulating rotation assembly, the tool being detachably mounted on the tool holder, and the circulating rotation assembly being able to drive the plurality of tool holders and the tool to circulate and rotate along the edge of the tool magazine; The circulating rotation assembly includes a tool magazine rotation motor, a tool magazine drive gear, a tool magazine transmission gear, a ring chain, and a tool magazine upright plate; The output end of the tool magazine rotating motor is connected to the tool magazine drive gear. The tool magazine drive gear meshes with the annular chain through the tool magazine transmission gear. The annular chain is arranged around the edge of the tool magazine upright plate. Multiple tool holders are evenly distributed on the annular chain. The tool holders are used to position and clamp the tools.

[0012] Preferably, the vehicle moving assembly includes a vehicle Y-axis slide rail, a vehicle moving drive structure, and a vehicle sliding plate; The tool moving assembly includes a tool X-axis slide rail, a tool Y-axis slide rail, a tool Z-axis slide rail, a tool moving drive structure, a tool moving support, a tool moving main seat, and a tool moving center seat; The Y-axis slide rail of the vehicle and the Y-axis slide rail of the tool are respectively fixedly installed on the base along the Y-axis direction; The vehicle sliding plate is slidably mounted on the vehicle Y-axis slide rail, and can move along the vehicle Y-axis slide rail under the drive of the vehicle moving drive structure; The tool's Y-axis slide rail is fixedly installed on the base along the Y-axis direction; The tool moving support is vertically arranged and slidably installed on the tool Y-axis slide rail, and can move along the tool Y-axis slide rail under the drive of the tool moving drive structure; The tool Z-axis slide rail is mounted on the tool moving support along the Z-axis direction, and the tool moving main seat is slidably mounted on the tool Z-axis slide rail, and can move along the tool Z-axis slide rail under the drive of the tool moving drive structure; The tool X-axis slide rail is mounted on the tool moving main seat along the Z-axis direction, and the tool moving center seat is movably mounted inside the tool moving main seat and can move along the tool X-axis slide rail under the drive of the tool moving drive structure. The vehicle movement drive structure and the tool movement drive structure are lead screw drive mechanisms.

[0013] Preferably, the tool changing moving assembly includes a tool changing base, a tool changing upper seat, a tool changing Y-axis slide rail, a tool changing X-axis slide rail, and a tool changing moving drive structure; The tool changer base is fixedly installed above one of the fixedly installed machining components; The tool changer Y-axis slide rail is fixedly installed on the tool changer base along the Y-axis direction; The tool changer upper seat is slidably mounted on the tool changer Y-axis slide rail, and can move along the tool changer Y-axis slide rail under the drive of the tool changer moving drive structure; The tool changer X-axis slide rail is fixedly installed on the tool changer upper seat along the X-axis direction; The tool changer drive assembly is slidably mounted on the tool changer X-axis slide rail, and can move along the tool changer X-axis slide rail under the drive of the tool changer moving drive structure. The tool changing movement drive structure is a lead screw drive mechanism.

[0014] A control method, applied to a dual-spindle milling and turning machining center as described above, includes the following steps: Step 1: According to the specifications of the workpiece to be processed, control the movement of the car moving component to drive the car sliding plate to move along the Y-axis slide rail of the car, and drive one of the car processing components to move closer to another fixed car processing component. The workpiece is clamped by the three-jaw chuck of the two car processing components. Step 2: Control the start of the machining drive motors of the two machining components, which will drive the machining axis and the workpiece to rotate around the Y-axis at a preset speed, providing stable rotational power for subsequent processing; Step 3: Control the movement of the tool movement drive structure of the milling mechanism. Through the coordinated operation of the tool Y-axis slide rail, tool X-axis slide rail, and tool Z-axis slide rail, the tool machining axis is driven to move along the Y-axis, X-axis, and Z-axis to the preset milling position. Step 4: Start the swing machining axis motor of the tool swing drive unit, and drive the turntable to swing around the X-axis through gear transmission, adjusting the swing angle of the tool machining axis to the preset machining angle to adapt to the workpiece machining requirements; Step 5: Start the rotary machining axis motor of the tool rotation drive unit to drive the tool machining axis and the tool to rotate around its own axis, and cooperate with the turning mechanism to perform milling operation on the workpiece; Step 6: After determining that the tool needs to be replaced, keep the turning mechanism and milling mechanism operating normally, control the tool changing moving component to move the tool changing moving drive structure in advance, so that the tool changing drive component moves to the tool holder position corresponding to the preset new tool in the tool magazine, so that one of the jaws aligns with the new tool and grabs it, and then control the tool changing drive cylinder to start, so that the tool changing jaw rotates through the meshing transmission of the straight rack and the tool changing transmission gear, completing the pre-preparation of the new tool; Step 7: After the new tool is pre-grabbed, control the lathe drive motor and the rotary machining axis motor to stop operating, so that the lathe axis and the tool machining axis stop rotating to avoid machining interference; Step 8: Control the tool moving component to adjust the spatial position of the tool machining axis, and at the same time control the swing drive unit to adjust the swing angle of the tool machining axis so that the old tool to be replaced is in the preset tool changing posture. Step 9: The tool change moving component drives the tool change drive component, which has already grabbed the new tool, to move quickly to the preset tool change position of the milling mechanism. The old tool on the tool processing axis is grabbed through another empty slot of the tool change chuck, and the old tool is removed from the tool processing axis through the cooperation of the tool change moving component. Step 10: Control the action of the tool change drive cylinder to drive the tool change chuck to rotate, so that the chuck for gripping the new tool is aligned with the connector of the tool machining axis. Through the cooperation of the tool change moving component, the new tool is detachably inserted into the tool machining axis. After the new tool is clamped in place, the tool change chuck releases the new tool. Step 11: The tool changer moving component moves the tool changer drive component to the position of the corresponding empty tool holder in the tool magazine, releases the old tool and fixes it on the tool holder, and the tool changer drive component resets; Step 12: After the tool change is completed, the control lathe machining drive motor and the rotating machining axis motor resume operation, and the milling mechanism continues to process according to the preset process; during the processing, the cutting fluid is collected on the first and second surfaces of the base to the fluid guide surface, and flows into the chip discharge machine through the fluid guide port to realize the recovery of cutting fluid and the separation of waste chips.

[0015] One of the above technical solutions has the following beneficial effects: (1) The integrated turning and milling composite design completely abandons the traditional separate equipment processing mode. The workpiece can be clamped once to complete the turning and milling process, avoiding the time loss caused by multiple disassembly and clamping, and greatly improving the processing efficiency.

[0016] (2) The clamping method at both ends of the double-car machining assembly can significantly improve the clamping stability of long workpieces compared with single-end clamping, effectively ensure the coaxiality of the workpieces, reduce the oscillation error during the machining process, and improve the machining accuracy.

[0017] (3) The five-axis linkage milling structure (three-dimensional movement + swing + rotation) gives the tool a high degree of machining freedom, which can accurately adapt to the high-precision machining requirements of complex curved surfaces, groove structures, etc., and broaden the scope of equipment application.

[0018] (4) The automatic tool changer works in conjunction with the tool magazine, eliminating the need for manual intervention in tool switching, reducing labor costs, and avoiding operational errors during manual tool changing, thus further ensuring machining consistency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a dual-spindle turning and milling machining center. Figure 2 This is a partial structural diagram of a dual-spindle milling and turning machining center. Figure 3 yes Figure 2 Another perspective illustration; Figure 4 yes Figure 2 Partial structural diagram; Figure 5 This is a partial structural diagram of the tool magazine, tool changing mechanism, and turning components in a dual-spindle milling and turning machining center. Figure 6 This is a partial structural diagram of the tool changing mechanism and turning assembly in a dual-spindle milling and turning machining center. Figure 7 yes Figure 6 A magnified view of a section at point A in the middle; In the attached diagram: base 1, first surface 11, second surface 12, barrier wall 14, liquid guide port 15; 2. Machining mechanism, 21. Machining moving component, 211. Machining Y-axis slide rail, 212. Machining moving drive structure, 213. Machining sliding plate, 22. Machining component, 221. Machining axis rotation drive structure, 222. Housing, 223. Three-jaw chuck, 223. Machining axis, 23. Machining platform, 24. Horizontal table, 241. Placement table, 242. Support table, 243. Drainage channel, 244. Milling mechanism 3, tool moving assembly 31, tool X-axis slide rail 311, tool Y-axis slide rail 312, tool Z-axis slide rail 313, tool moving drive structure 314, tool moving support 315, tool moving main seat 316, tool moving center seat 317, tool drive assembly 32, turntable 3211, oscillating machining axis motor 3212, tool oscillating drive unit 321, tool rotation drive unit 322, tool machining axis 33; Tool changing mechanism 4, tool changing moving assembly 41, tool changing base 411, tool changing upper seat 412, tool changing Y-axis slide rail 413, tool changing X-axis slide rail 414, tool changing moving drive structure 415, tool changing drive assembly 42, tool changing bracket 421, main bracket 4211, bracket side wing 4212, tool changing drive cylinder 422, straight rack 423, tool changing transmission gear 424, tool changing chuck 425, chuck 426, rotating shaft 427; Tool magazine 5, circulating rotating assembly 51, tool magazine rotating motor 511, tool magazine drive gear 512, tool magazine transmission gear 513, ring chain 514, tool magazine upright plate 515, tool holder 52; 6. Cutting tools; 7. Chipping machine. Detailed Implementation

[0020] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "left," "right," "vertical," "level," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] A dual-spindle turning-milling composite machining center includes a base 1, a turning mechanism 2, a milling mechanism 3, a tool changing mechanism 4, and a tool magazine 5; The turning mechanism 2 and the milling mechanism 3 are arranged side by side on the base 1 along the Y-axis; the tool magazine 5 is fixedly installed on one side of the milling mechanism 3, and a plurality of tools 6 are detachably installed on the tool magazine 5, and the plurality of tools 6 rotate cyclically along the edge of the tool magazine 5; the tool changing mechanism 4 is installed above the turning mechanism 2, and the tool changing mechanism 4 is used to move between the milling mechanism 3 and the tool magazine 5, and cooperates with the tool processing axis 33 to realize automatic tool changing 6; The machining mechanism 2 includes a machining moving component 21 and two machining components 22 horizontally facing each other along the Y-axis. Each machining component 22 is provided with a machining shaft 23. The machining moving component 21 is driven to one of the machining components 22 to drive it to move closer to or away from the other machining component 22, so as to clamp and release the workpiece to be processed. Each machining component 22 is provided with a machining shaft rotation drive structure 221 to drive its own machining shaft 23 to rotate around the Y-axis. The milling mechanism 3 includes a tool moving assembly 31, a tool driving assembly 32, and a tool machining axis 33. The tool driving assembly 32 is mounted on the moving end of the tool moving assembly 31, and the tool machining axis 33 is mounted on the output end of the tool driving assembly 32. The tool moving assembly 31 is used to drive the tool driving assembly 32 and the tool machining axis 33 to move independently along the X-axis, Y-axis, and Z-axis directions. The tool driving assembly 32 includes a tool swing driving unit 321 and a tool rotation driving unit 322. The tool swing driving unit 321 is used to drive the tool machining axis 33 to swing around the X-axis. The tool machining axis 33 can be detachably connected to a tool 6. The tool rotation driving unit 322 is used to drive the tool machining axis 33 and the tool 6 to rotate around their own axis.

[0025] like Figure 1-7 As shown, this technical solution arranges the turning mechanism 2 and the milling mechanism 3 side by side along the Y-axis on the base 1, forming a functionally integrated machining system. The turning mechanism 2 adopts a design with two turning components 22 facing each other horizontally. One of the turning components 22 moves along the Y-axis through a turning moving component 21. The distance between the two components can be adjusted according to the workpiece length, and the workpiece is fixed by clamping at both ends. At the same time, the turning axis rotation drive structure 221 of each turning component 22 drives the turning axis 23 to rotate around the Y-axis, causing the workpiece to rotate synchronously to complete the turning. In the milling mechanism 3, the tool moving component 31 can independently drive the tool turning axis 33 to move in three dimensions along the X, Y, and Z axes. The swing drive unit of the tool drive component 32 drives the tool turning axis 33 to swing around the X-axis, and the rotation drive unit drives the tool turning axis 33 and the tool 6 to rotate. The three work together to achieve multi-dimensional milling. The tool magazine 5 can drive the tool holder 52 and the tool to move in a cycle, providing the tool 6 for tool changing; the tool changing mechanism 4 moves between the milling mechanism 3 and the tool magazine 5, and through the grabbing and releasing action, it cooperates with the tool processing axis 33 to complete the automatic tool changing 6, realizing the seamless connection of turning and milling processes.

[0026] To further explain, the base 1 has a first surface 11 and a second surface 12 connected at an angle to the first surface 11. The first surface 11 is inclined to the ground, and the second surface 12 is parallel to the ground. The turning mechanism 2 is located on the first surface 11, and the milling mechanism 3 is located on the second surface 12. The first surface 11 extends outward along its own plane from the edge away from the second surface 12 to form a liquid guiding surface 13. The edges of the base 1, except for the liquid guiding surface 13, are vertically enclosed by a blocking wall 14. The upper end of the liquid guiding surface 13 forms a liquid guiding port 15, and a chipper 7 is placed at the extension of the liquid guiding port 15.

[0027] like Figure 1-2As shown, the base 1 is designed with a first surface 11 and a second surface 12 connected at an angle. The first surface 11 is inclined and a turning mechanism 2 is installed thereon, while the second surface 12 is horizontal and a milling mechanism 3 is installed thereon. Except for the fluid guiding surface 13, the edges of the base 1 are provided with baffles 14 to prevent the cutting fluid and chips generated during the machining process from splashing out. Under the action of gravity, the cutting fluid and chips are collected from the inclined first surface 11 where the turning mechanism 2 is located to the fluid guiding surface 13, and finally flow into the chip ejector 7 below through the fluid guiding port 15. This achieves the separation and treatment of cutting fluid and chips. The recovered cutting fluid can be recycled, reducing resource waste and lowering processing costs. At the same time, the centralized treatment of chips improves the safety and standardization of the processing environment.

[0028] To further explain, the machining mechanism 2 also includes a machining platform 24, which includes a transverse platform 241, a placement platform 242, and multiple support platforms 243. The placement platform 242 is fixedly disposed at one end of the horizontal platform 241. The top ends of the plurality of support platforms 243 are spaced apart at the lower end of the horizontal platform 241, and the bottom ends of the plurality of support platforms 243 are spaced apart at the second surface 12 of the base 1. A drainage channel 244 is formed between the plurality of support platforms 243. The horizontal platform 241 has a drainage port 245 for the drainage channel 244. One of the car processing components 22 is fixedly installed on the placement platform 242, and the other car processing component 22 is slidably installed on the transverse platform 241 via the car moving component 21.

[0029] like Figure 2 As shown, a machining platform 24 is added to the machining mechanism 2. The platform consists of a transverse platform 241, a placement platform 242, and multiple support platforms 243. The placement platform 242 is fixed to one end of the transverse platform 241 and is used to install and fix the machining component 22. Another machining component 22 is slidably installed on the transverse platform 241 through the machining moving component 21. This provides a stable installation reference for the two sets of machining components 22, ensuring the horizontal alignment accuracy of the two machining components 22, providing structural protection for the coaxiality of workpiece clamping, and further improving machining accuracy. Next, the multiple support platforms 243 support the transverse platform 241 at intervals, forming a through drainage channel 244. The cutting fluid generated during machining flows quickly into the drainage channel 244 through the drainage port 245 opened on the transverse platform 241 corresponding to the drainage channel 244, and finally flows into the chip removal machine 7.

[0030] To further explain, the machining assembly 22 includes a housing 222 and a three-jaw chuck 223, and the machining axis rotation drive structure 221 is a machining axis rotation drive motor; The housing 222 is fixedly installed on the machining platform 24 or slidably installed on the car moving assembly 21. The machining shaft rotation drive motor is provided inside the housing 222. The machining shaft 23 is connected to the housing 222 and is driven by the output end of the machining shaft rotation drive motor. The three-jaw chuck 223 is located on the end face of the machining shaft 23.

[0031] like Figure 5-6 As shown, the housing 222 serves as the mounting carrier, integrating the turning axis rotary drive motor internally. This makes the turning assembly 22 compact, reducing space occupation, while also protecting the internal motor and transmission structure from cutting fluid and debris corrosion, thus improving the assembly's operational stability. The turning axis 23 is connected to the output end of the turning axis rotary drive motor, and a three-jaw chuck 223 is mounted on its end face. The fixed turning assembly 22 is mounted on the placement table 242 via the housing 222, while the movable turning assembly 22 is mounted on the turning sliding plate 213 of the turning moving assembly 21 via the housing 222. When clamping the workpiece, the three-jaw chuck 223 has an automatic centering function, which can quickly and accurately clamp both ends of the workpiece synchronously, improving clamping efficiency and accuracy, and reducing positioning errors after workpiece clamping. After the turning axis rotary drive motor starts, it drives the turning axis 23 and the workpiece to rotate around the Y-axis through the transmission structure, providing stable power for turning. This allows for precise speed control, meeting the speed requirements of different materials and different processing techniques, and improving the quality of turning.

[0032] To further explain, the tool changing mechanism 4 includes a tool changing moving component 41 and a tool changing driving component 42. The tool changing driving component 42 is installed on the moving end of the tool changing moving component 41. The tool changing moving component 41 is used to drive the tool changing driving component 42 to move between the milling mechanism 3 and the tool magazine 5. The tool changing driving component 42 is used to grab and release the tool 6, thereby cooperating with the tool processing axis 33 to realize automatic tool changing. The tool change drive assembly 42 includes a tool change bracket 421, a tool change drive cylinder 422, a straight rack 423, a tool change transmission gear 424, and a tool change chuck 425; The tool changer bracket 421 is fixedly installed on the moving end of the tool changer moving assembly 41. The tool changer bracket 421 includes a main bracket 4211, and the main bracket 4211 has two bracket side wings 4212 extending in the same direction on one side. The tool changing drive cylinder 422 is fixedly installed on the main bracket 4211, and the output end of the tool changing drive cylinder 422 is connected to the straight rack 423. The tool changing transmission gear 424 and the tool changing chuck 425 are rotatably mounted between the two side wings 4212 of the bracket via a rotating shaft 427. The tool changing chuck 425 has an L-shaped structure, and each end of the L-shaped structure is provided with a chuck 426. The middle end of the L-shaped structure is fixedly connected to part of the outer wheel surface of the tool changing transmission gear 424, and the remaining outer wheel surface of the tool changing transmission gear 424 meshes with the straight rack 423 for transmission.

[0033] like Figure 5-7 As shown, the main support 4211 and two side wings 4212 of the tool changer bracket 421 provide a stable mounting reference for the tool changer drive cylinder 422, the straight rack 423, the tool changer transmission gear 424, and the tool changer chuck 425. During tool change, the tool changer drive cylinder 422 drives the straight rack 423 to move. Through the meshing transmission between the straight rack 423 and the tool changer transmission gear 424, the L-shaped tool changer chuck 425, which is fixedly connected to the tool changer transmission gear 424, rotates. The jaws 426 at both ends of the tool changer chuck 425 are used to grip the new tool and the old tool, respectively. The rotation of the chuck realizes the switching between the new and old tools, and completes the tool change action in conjunction with the tool changer moving assembly 41. The L-shaped double jaw design, combined with gear and rack transmission, enables synchronous gripping and switching of old and new tools, eliminating the need for separate "removing the old tool and taking the new tool" operations. At the same time, the cylinder-driven transmission method provides rapid response and precise action, enabling the tool changer jaws 425 to start, stop, and position quickly, significantly shortening tool change time and improving machining efficiency.

[0034] To further explain, the tool oscillation drive unit 321 includes a turntable 3211 and an oscillation machining axis motor 3212; The tool rotation drive unit 322 is a rotating machining axis motor; One side of the turntable 3211 is rotatably mounted on the tool moving center seat 317, and the other side of the turntable 3211 is fixedly mounted on the swing machining axis motor 3212. The oscillating machining axis motor 3212 is installed on the side of the tool moving center seat 317 opposite to the turntable 3211. The output end of the oscillating machining axis motor 3212 is fixedly connected to the center of the turntable 3211 through gear transmission. The turntable 3211 can oscillate around the X-axis under the drive of the oscillating machining axis motor 3212. The tool processing axis 33 is mounted on the output end of the rotary processing axis motor, and the tool processing axis 33 can rotate around its own axis under the drive of the rotary processing axis motor.

[0035] like Figure 3-4As shown, the tool oscillation drive unit 321 consists of a turntable 3211 and an oscillation machining axis motor 3212. The oscillation machining axis motor 3212 is centrally connected to the turntable 3211 via gear transmission, driving the turntable 3211 to oscillate around the X-axis. The tool rotation drive unit 322 is a rotation machining axis motor, fixed on the other side of the turntable 3211, with the tool machining axis 33 mounted at the motor output end. During machining, the oscillation machining axis motor 3212 drives the turntable 3211 to oscillate via gear transmission, thereby adjusting the oscillation angle of the tool machining axis 33. The rotation machining axis motor drives the tool machining axis 33 and the tool to rotate around their own axis. Combined with the three-dimensional movement of the tool moving assembly 31, this achieves milling of complex curved surfaces.

[0036] To further explain, the tool magazine 5 includes a circulating rotation assembly 51 and a plurality of tool holders 52. The plurality of tool holders 52 are evenly distributed on the edge of the circulating rotation assembly 51. The tool is detachably mounted on the tool holder 52. The circulating rotation assembly 51 can drive the plurality of tool holders 52 and the tool 6 to circulate and rotate along the edge of the tool magazine 5. The circulating rotation assembly 51 includes a tool magazine rotation motor 511, a tool magazine drive gear 512, a tool magazine transmission gear 513, an annular chain 514, and a tool magazine upright plate 515. The output end of the tool magazine rotating motor 511 is connected to the tool magazine drive gear 512. The tool magazine drive gear 512 is driven by the tool magazine transmission gear 513 and the annular chain 514. The annular chain 514 is arranged around the edge of the tool magazine upright plate 515. A plurality of tool holders 52 are evenly distributed on the annular chain 514. The tool holders 52 are used to position and clamp the tools 6.

[0037] like Figure 1 and 5 As shown, the tool magazine 5 drives the tool holder 52 and tools to circulate through the rotating assembly 51, providing tools 6 for tool changing. Specifically, the tool magazine rotation motor 511 starts and drives the tool magazine drive gear 512 to rotate. The tool magazine drive gear 512 drives the ring chain 514 to circulate through the tool magazine transmission gear 513, thereby driving the tool holder 52 and tools 6 to circulate around the edge of the tool magazine stand plate 515, transporting the preset new tools to the designated tool changing position, providing tools 6 for the tool changing mechanism 4. When the old tools are recycled, the ring chain 514 drives the empty tool holder 52 to the recycling position to receive the old tools released by the tool changing mechanism 4. The transmission structure of the gear and ring chain 514 is reliable and has a strong load-bearing capacity, which can stably drive multiple tool holders 52 to circulate, ensuring the accuracy and continuity of tool feeding and meeting the tool changing requirements of multi-process machining.

[0038] To further explain, the vehicle moving assembly 21 includes a vehicle Y-axis slide rail 211, a vehicle moving drive structure 212, and a vehicle sliding plate 213; The tool moving assembly 31 includes a tool X-axis slide rail 311, a tool Y-axis slide rail 312, a tool Z-axis slide rail 313, a tool moving drive structure 314, a tool moving support 315, a tool moving main seat 316, and a tool moving center seat 317. The Y-axis slide rail 211 of the vehicle and the Y-axis slide rail 312 of the cutting tool are respectively fixedly installed on the base 1 along the Y-axis direction; The vehicle sliding plate 213 is slidably mounted on the vehicle Y-axis slide rail 211, and can move along the vehicle Y-axis slide rail 211 under the drive of the vehicle moving drive structure 212. The tool Y-axis slide rail 312 is fixedly installed on the base 1 along the Y-axis direction; The tool moving support 315 is vertically arranged and slidably installed on the tool Y-axis slide rail 312, and can move along the tool Y-axis slide rail 312 under the drive of the tool moving drive structure 314. The tool Z-axis slide rail 313 is mounted on the tool moving support 315 along the Z-axis direction, and the tool moving main seat 316 is slidably mounted on the tool Z-axis slide rail 313 and can move along the tool Z-axis slide rail 313 under the drive of the tool moving drive structure 314. The tool X-axis slide rail 311 is mounted on the tool moving main seat 316 along the Z-axis direction, and the tool moving center seat 317 is movably mounted inside the tool moving main seat 316 and can move along the tool X-axis slide rail 311 under the drive of the tool moving drive structure 314. The vehicle movement drive structure 212 and the tool movement drive structure 314 are lead screw drive mechanisms.

[0039] It should be noted that the lead screw drive mechanism is a linear drive mechanism widely used in the field, which generally includes a lead screw, a drive motor, and a nut sleeve. For example, the tool moving support 315 can move along the tool Y-axis slide rail 312 under the drive of the tool moving drive structure 314. The lead screw is installed on the inner side of the tool X-axis slide rail 311 along the Y-axis direction through a bearing. The nut sleeve is sleeved on the lead screw, and the outer wall of the nut sleeve is fixed to the tool moving support 315. The bottom surface of the tool moving support 315 is provided with a sliding groove, which is slidably installed with the tool Y-axis slide rail 312. When the drive motor is started, the nut sleeve moves on the lead screw, thereby driving the tool moving support 315 to slide along the tool Y-axis slide rail 312.

[0040] like Figure 1-2The tool movement drive structure 314 between the tool moving main seat 316 and the tool Z-axis slide rail 313, the tool movement drive structure 314 between the tool moving center seat 317 and the tool X-axis slide rail 311, and the vehicle movement drive structure 212 between the vehicle Y-axis slide rail 211 and the vehicle sliding plate 213 are similar to those described above, and will not be repeated here.

[0041] To further explain, the tool changing moving assembly 41 includes a tool changing base 411, a tool changing upper seat 412, a tool changing Y-axis slide rail 413, a tool changing X-axis slide rail 414, and a tool changing moving drive structure 415; The tool changer base 411 is fixedly installed above one of the fixedly installed machining components 22; The tool changer Y-axis slide rail 413 is fixedly installed on the tool changer base 411 along the Y-axis direction; The tool changer upper seat 412 is slidably mounted on the tool changer Y-axis slide rail 413, and can move along the tool changer Y-axis slide rail 413 under the drive of the tool changer moving drive structure 415. The tool changer X-axis slide rail 414 is fixedly installed on the tool changer upper seat 412 along the X-axis direction; The tool changer drive assembly 42 is slidably mounted on the tool changer X-axis slide rail 414, and can move along the tool changer X-axis slide rail 414 under the drive of the tool changer moving drive structure 415. The tool changing movement drive structure 415 is a lead screw drive mechanism.

[0042] like Figure 6 As shown, the tool changer upper seat 412 and the tool changer Y-axis slide rail 413, and the tool changer drive structure 415 between the tool changer drive assembly 42 and the tool changer X-axis slide rail 414 are similar to the aforementioned tool movement drive structure 314, and will not be described again here.

[0043] A control method, applied to a dual-spindle milling and turning machining center as described above, includes the following steps: Step 1: According to the specifications of the workpiece to be processed, control the movement of the car moving component 21 and drive the car moving drive structure 212 to move the car sliding plate 213 along the Y-axis slide rail 211, which will drive one of the car processing components 22 to move closer to the other fixed car processing component 22, and the workpiece will be clamped by the three-jaw chuck 223 of the two car processing components 22. Step 2: Control the start of the machining drive motors of the two machining components 22, which drive the machining axis 23 and the workpiece to rotate around the Y-axis at a preset speed, providing stable rotational power for subsequent processing; Step 3: Control the movement of the tool movement drive structure 314 of the milling mechanism 3. Through the coordinated operation of the tool Y-axis slide rail 312, tool X-axis slide rail 311, and tool Z-axis slide rail 313, the tool machining axis 33 is driven to move along the Y-axis, X-axis, and Z-axis to the preset milling position. Step 4: Start the swing machining axis motor 3212 of the control tool swing drive unit 321, drive the turntable 3211 to swing around the X-axis through gear transmission, and adjust the swing angle of the tool machining axis 33 to the preset machining angle to adapt to the workpiece machining requirements. Step 5: Start the rotation machining axis motor of the tool rotation drive unit 322 to drive the tool machining axis 33 and the tool to rotate around its own axis, and cooperate with the turning mechanism 2 to perform milling operation on the workpiece; Step 6: After determining that the tool needs to be replaced, keep the turning mechanism 2 and the milling mechanism 3 operating normally, control the tool changing moving component 411 to move the tool changing moving drive structure 415 in advance, drive the tool changing drive component 42 to move to the tool holder 52 position of the tool magazine 5 corresponding to the preset new tool, so that one of the chucks 426 is aligned with the new tool and grabs it, then control the tool changing drive cylinder 422 to start, and drive the tool changing chuck 425 to rotate through the meshing transmission of the straight rack 423 and the tool changing transmission gear 424, thus completing the pre-preparation of the new tool; Step 7: After the new tool is pre-grabbed, control the lathe drive motor and the rotary machining axis motor to stop operating, so that the lathe axis 23 and the tool machining axis 33 stop rotating to avoid machining interference; Step 8: Control the tool moving component 31 to adjust the spatial position of the tool machining axis 33, and at the same time control the swing drive unit to adjust the swing angle of the tool machining axis 33 so that the old tool to be replaced is in the preset tool changing posture. Step 9: The tool change moving component 41 drives the tool change driving component 42, which has already grabbed the new tool, to move quickly to the preset tool change position of the milling mechanism 3. The old tool on the tool processing shaft 33 is grabbed through the other empty slot 426 of the tool change chuck 425, and the old tool is removed from the tool processing shaft 33 through the cooperation of the tool change moving component 41. Step 10: Control the operation of the tool change drive cylinder 422 to drive the tool change chuck 425 to rotate, so that the chuck 426 for gripping the new tool is aligned with the connector of the tool processing axis 33. With the cooperation of the tool change moving component 41, the new tool is detachably inserted into the tool processing axis 33. After the new tool is clamped in place, the tool change chuck 425 releases the new tool. Step 11: The tool change moving component 41 drives the tool change driving component 42 to move to the position of the tool magazine 5 corresponding to the empty tool holder 52, releases the old tool and fixes it on the tool holder 52, and the tool change driving component 42 resets. Step 12: After the tool change is completed, the control car machining drive motor and the rotating machining axis motor resume operation, and the milling machining mechanism 3 continues to process according to the preset process; during the processing, the cutting fluid is collected on the first surface 11 and the second surface 12 of the base 1 to the liquid guiding surface 13, and flows into the chip removal machine 7 through the liquid guiding port 15 to realize the recovery of cutting fluid and the separation of waste chips.

[0044] This control method, based on the aforementioned equipment structure, achieves full-process automated control according to the process of "clamping-turning-milling-tool changing-resuming machining-chip removal". First, the distance between the turning assembly 22 and the turning component 21 is adjusted, the three-jaw chuck 223 clamps the workpiece, and the turning drive motor is started to rotate the workpiece. Then, the position and posture of the milling cutter are adjusted by the tool moving assembly 31 and the tool swing drive unit 321, and the rotary drive motor is started to perform milling. When changing tools, the new tool is pre-grabbed while machining is not stopped, then the machine is stopped and the tool changing posture is adjusted. The old tool is grabbed and the new tool is installed simultaneously by the tool changing chuck 425. After the old tool is recovered, machining resumes. Throughout the process, the cutting fluid and waste chips are naturally collected to the chip removal machine 7 through the base 1 structure for treatment.

[0045] As can be seen, this control method adopts a "pre-grab new tool" tool changing logic, completing the preparation of the new tool during normal milling and turning operations, with only a short pause during the switch between old and new tools, significantly reducing downtime and improving overall machining efficiency. Simultaneously, each step precisely corresponds to the equipment structure. Through coordinated control of the turning movement component 21, the tool movement component 31, and the tool changing mechanism 4, the entire machining process is automated, reducing manual intervention, minimizing human error, and ensuring machining consistency and stability. Furthermore, machining and chip removal are performed simultaneously, eliminating the need for an additional chip removal process, further improving machining efficiency. At the same time, the recycling of cutting fluid and centralized treatment of waste chips align with the concept of green machining, reducing resource consumption and environmental impact.

[0046] In summary, this control method adopts a step-by-step control process logic with close connection between each link. Parameters such as rotation speed, processing position, and tool change timing can be flexibly adjusted according to the processing requirements of different workpieces, adapting to various processing scenarios and improving the versatility and practicality of the equipment.

[0047] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A dual-spindle turning-milling composite machining center, characterized in that, It includes a base (1), a turning mechanism (2), a milling mechanism (3), a tool changing mechanism (4), and a tool magazine (5); The turning mechanism (2) and the milling mechanism (3) are arranged side by side on the base (1) along the Y-axis; the tool magazine (5) is fixedly installed on one side of the milling mechanism (3), and several tools (6) are detachably installed on the tool magazine (5), and the tools (6) rotate cyclically along the edge of the tool magazine (5); the tool changing mechanism (4) is installed above the turning mechanism (2), and the tool changing mechanism (4) is used to move between the milling mechanism (3) and the tool magazine (5), and cooperates with the tool processing axis (33) to realize automatic tool changing (6); The machining mechanism (2) includes a machining moving component (21) and two machining components (22) arranged horizontally opposite each other along the Y-axis. Each machining component (22) is provided with a machining shaft (23). The machining moving component (21) is connected to one of the machining components (22) for driving it to move closer to or away from the other machining component (22) to achieve clamping and releasing of the workpiece to be processed. Each machining component (22) is provided with a machining shaft rotation drive structure (221) for driving its own machining shaft (23) to rotate around the Y-axis. The milling mechanism (3) includes a tool moving assembly (31), a tool driving assembly (32), and a tool machining axis (33). The tool driving assembly (32) is installed at the moving end of the tool moving assembly (31), and the tool machining axis (33) is installed at the output end of the tool driving assembly (32). The tool moving assembly (31) is used to drive the tool driving assembly (32) and the tool machining axis (33) to move independently along the X-axis, Y-axis, and Z-axis. The tool driving assembly (32) includes a tool swing driving unit (321) and a tool rotation driving unit (322). The tool swing driving unit (321) is used to drive the tool machining axis (33) to swing around the X-axis. The tool machining axis (33) can be detachably connected to a tool (6). The tool rotation driving unit (322) is used to drive the tool machining axis (33) and the tool (6) to rotate around their own axis.

2. The dual-spindle turning and milling machining center according to claim 1, characterized in that, The base (1) has a first surface (11) and a second surface (12) connected at an angle to the first surface (11). The first surface (11) is inclined to the ground, and the second surface (12) is parallel to the ground. The turning mechanism (2) is located on the first surface (11), and the milling mechanism (3) is located on the second surface (12). The first surface (11) extends outward along its own plane to form a liquid guiding surface (13) at the edge away from the second surface (12). The base (1) is vertically surrounded by a blocking wall (14) except at the liquid guiding surface (13). The upper end of the liquid guiding surface (13) forms a liquid guiding port (15). A chipper (7) is placed at the extension of the liquid guiding port (15).

3. The dual-spindle turning-milling composite machining center according to claim 2, characterized in that, The machining mechanism (2) further includes a machining platform (24), which includes a transverse platform (241), a placement platform (242), and multiple support platforms (243). The placement platform (242) is fixedly disposed at one end of the horizontal platform (241). The top ends of the plurality of support platforms (243) are spaced apart at the lower end of the horizontal platform (241), and the bottom ends of the plurality of support platforms (243) are spaced apart at the second surface (12) of the base (1). A drainage channel (244) is formed between the plurality of support platforms (243), and the horizontal platform (241) has a drainage port (245) for the drainage channel (244). One of the machining components (22) is fixedly mounted on the placement platform (242), and the other machining component (22) is slidably mounted on the transverse platform (241) via the machining moving component (21).

4. The dual-spindle turning and milling machining center according to claim 1, characterized in that, The machining assembly (22) includes a housing (222) and a three-jaw chuck (223), and the machining axis rotation drive structure (221) is a machining axis rotation drive motor; The housing (222) is fixedly installed on the machining platform (24) or slidably installed on the car moving assembly (21). The housing (222) is equipped with a machining shaft rotation drive motor. The machining shaft (23) is connected to the housing (222) and is connected to the output end of the machining shaft rotation drive motor. The three-jaw chuck (223) is located on the end face of the machining shaft (23).

5. A dual-spindle turning-milling composite machining center according to claim 1, characterized in that, The tool changing mechanism (4) includes a tool changing moving component (41) and a tool changing driving component (42). The tool changing driving component (42) is installed on the moving end of the tool changing moving component (41). The tool changing moving component (41) is used to drive the tool changing driving component (42) to move between the milling mechanism (3) and the tool magazine (5). The tool changing driving component (42) is used to grab and release the tool (6), thereby cooperating with the tool processing axis (33) to realize automatic tool changing (6). The tool change drive assembly (42) includes a tool change bracket (421), a tool change drive cylinder (422), a straight rack (423), a tool change transmission gear (424), and a tool change chuck (425). The tool changer bracket (421) is fixedly installed on the moving end of the tool changer moving assembly (41). The tool changer bracket (421) includes a main bracket (4211), and the main bracket (4211) has two bracket side wings (4212) extending in the same direction on one side. The tool change drive cylinder (422) is fixedly installed on the main bracket (4211), and the output end of the tool change drive cylinder (422) is connected to the straight rack (423). The tool changing transmission gear (424) and the tool changing chuck (425) are rotatably mounted between the two side wings (4212) of the bracket via a rotating shaft (427). The tool changing chuck (425) has an L-shaped structure, and the two ends of the L-shaped structure are respectively provided with chucks (426). The middle end of the L-shaped structure is fixedly connected to part of the outer wheel surface of the tool changing transmission gear (424), and the remaining outer wheel surface of the tool changing transmission gear (424) meshes with the straight rack (423) for transmission.

6. The dual-spindle turning-milling composite machining center according to claim 1, characterized in that, The tool swing drive unit (321) includes a turntable (3211) and a swing machining axis motor (3212). The tool rotation drive unit (322) is a rotary machining axis motor; One side of the turntable (3211) is rotatably mounted on the tool moving center seat (317), and the other side of the turntable (3211) is fixedly mounted on the swing machining axis motor (3212). The oscillating machining axis motor (3212) is installed on the side of the tool moving center seat (317) opposite to the turntable (3211). The output end of the oscillating machining axis motor (3212) is fixedly connected to the center of the turntable (3211) through gear transmission. The turntable (3211) can oscillate around the X-axis under the drive of the oscillating machining axis motor (3212). The tool processing axis (33) is installed at the output end of the rotary processing axis motor, and the tool processing axis (33) can rotate around its own axis under the drive of the rotary processing axis motor.

7. A dual-spindle turning-milling composite machining center according to claim 1, characterized in that, The tool magazine (5) includes a circulating rotation assembly (51) and a plurality of tool holders (52). The plurality of tool holders (52) are evenly distributed on the edge of the circulating rotation assembly (51). The tool is detachably mounted on the tool holder (52). The circulating rotation assembly (51) can drive the plurality of tool holders (52) and the tool (6) to circulate along the edge of the tool magazine (5). The circulating rotation assembly (51) includes a tool magazine rotation motor (511), a tool magazine drive gear (512), a tool magazine transmission gear (513), a ring chain (514), and a tool magazine upright plate (515). The output end of the tool magazine rotating motor (511) is connected to the tool magazine drive gear (512). The tool magazine drive gear (512) is driven by the tool magazine transmission gear (513) meshing with the annular chain (514). The annular chain (514) is arranged around the edge of the tool magazine upright plate (515). Multiple tool holders (52) are evenly distributed on the annular chain (514). The tool holders (52) are used to position and clamp the tools (6).

8. A dual-spindle turning-milling composite machining center according to claim 1, characterized in that, The vehicle moving assembly (21) includes a vehicle Y-axis slide rail (211), a vehicle moving drive structure (212), and a vehicle sliding plate (213). The tool moving assembly (31) includes a tool X-axis slide rail (311), a tool Y-axis slide rail (312), a tool Z-axis slide rail (313), a tool moving drive structure (314), a tool moving support (315), a tool moving main seat (316), and a tool moving center seat (317). The Y-axis slide rail (211) of the vehicle and the Y-axis slide rail (312) of the cutting tool are respectively fixedly installed on the base (1) along the Y-axis direction; The vehicle sliding plate (213) is slidably mounted on the vehicle Y-axis slide rail (211) and can move along the vehicle Y-axis slide rail (211) under the drive of the vehicle moving drive structure (212); The tool Y-axis slide rail (312) is fixedly installed on the base (1) along the Y-axis direction; The tool moving support (315) is vertically arranged and slidably installed on the tool Y-axis slide rail (312), and can move along the tool Y-axis slide rail (312) under the drive of the tool moving drive structure (314); The tool Z-axis slide rail (313) is mounted on the tool moving support (315) along the Z-axis direction, and the tool moving main seat (316) is slidably mounted on the tool Z-axis slide rail (313) and can move along the tool Z-axis slide rail (313) under the drive of the tool moving drive structure (314). The tool X-axis slide rail (311) is mounted on the tool moving main seat (316) along the Z-axis direction. The tool moving center seat (317) is movably mounted inside the tool moving main seat (316) and can move along the tool X-axis slide rail (311) under the drive of the tool moving drive structure (314). The vehicle movement drive structure (212) and the tool movement drive structure (314) are lead screw drive mechanisms.

9. A dual-spindle turning-milling composite machining center according to claim 5, characterized in that, The tool changing moving assembly (41) includes a tool changing base (411), a tool changing upper seat (412), a tool changing Y-axis slide rail (413), a tool changing X-axis slide rail (414), and a tool changing moving drive structure (415). The tool changer base (411) is fixedly installed above one of the fixedly installed machining components (22); The tool changer Y-axis slide rail (413) is fixedly installed on the tool changer base (411) along the Y-axis direction. The tool changer seat (412) is slidably mounted on the tool changer Y-axis slide rail (413), and can move along the tool changer Y-axis slide rail (413) under the drive of the tool changer moving drive structure (415). The tool changer X-axis slide rail (414) is fixedly installed on the tool changer upper seat (412) along the X-axis direction. The tool change drive assembly (42) is slidably mounted on the tool change X-axis slide rail (414) and can move along the tool change X-axis slide rail (414) under the drive of the tool change moving drive structure (415). The tool changing movement drive structure (415) is a lead screw drive mechanism.

10. A control method, characterized in that, The application of a dual-spindle milling and turning machining center as described in any one of claims 1-9 includes the following steps: Step 1: According to the specifications of the workpiece to be processed, control the movement of the car moving component (21) drive structure (212) to move, drive the car sliding plate (213) to move along the Y-axis slide rail (211), and drive one of the car processing components (22) to move closer to another fixed car processing component (22), and clamp the workpiece together through the three-jaw chuck (223) of the two car processing components (22); Step 2: Control the start of the machining drive motors of the two machining components (22) to drive the machining shaft (23) and the workpiece to rotate around the Y-axis at a preset speed, providing stable rotational power for subsequent processing; Step 3: Control the movement of the tool movement drive structure (314) of the milling mechanism (3). Through the coordinated operation of the tool Y-axis slide rail (312), tool X-axis slide rail (311), and tool Z-axis slide rail (313), the tool machining axis (33) is driven to move along the Y-axis, X-axis, and Z-axis to the preset milling position. Step 4: Start the swing machining axis motor (3212) of the control tool swing drive unit (321), drive the turntable (3211) to swing around the X-axis through gear transmission, and adjust the swing angle of the tool machining axis (33) to the preset machining angle to adapt to the workpiece machining requirements; Step 5: Start the rotating machining axis motor of the tool rotation drive unit (322) to drive the tool machining axis (33) and the tool to rotate around its own axis, and cooperate with the turning mechanism (2) to perform milling operation on the workpiece; Step 6: After determining that the tool needs to be replaced, keep the turning mechanism (2) and milling mechanism (3) operating normally, control the tool changing moving component (415) of the tool changing moving component (41) to move the tool changing driving component (42) to the tool holder (52) of the tool magazine (5) corresponding to the preset new tool, so that one of the chucks (426) is aligned with the new tool and grabs it. Then control the tool changing driving cylinder (422) to start, and drive the tool changing chuck (425) to rotate through the meshing transmission of the straight rack (423) and the tool changing transmission gear (424) to complete the pre-preparation of the new tool. Step 7: After the new tool is pre-grabbed, control the turning drive motor and the rotating machining axis motor to stop operating, so that the turning axis (23) and the tool machining axis (33) stop rotating to avoid machining interference; Step 8: Control the tool moving component (31) to adjust the spatial position of the tool machining axis (33), and at the same time control the swing drive unit to adjust the swing angle of the tool machining axis (33) so that the old tool to be replaced is in the preset tool changing posture. Step 9: The tool change moving assembly (41) drives the tool change drive assembly (42) that has grabbed the new tool to move quickly to the preset tool change position of the milling mechanism (3). The old tool on the tool processing shaft (33) is grabbed by the other empty slot (426) of the tool change chuck (425), and the old tool is removed from the tool processing shaft (33) by the cooperation of the tool change moving assembly (41). Step 10: Control the operation of the tool change drive cylinder (422) to drive the tool change chuck (425) to rotate, so that the chuck (426) for gripping the new tool is aligned with the connector of the tool machining axis (33). The new tool is detachably inserted into the tool machining axis (33) through the cooperation of the tool change moving assembly (41). After the new tool is clamped in place, the tool change chuck (425) releases the new tool. Step 11: The tool change moving component (41) drives the tool change driving component (42) to move to the position of the empty tool holder (52) corresponding to the tool magazine (5), release the old tool and fix it on the tool holder (52), and the tool change driving component (42) resets; Step 12: After the tool change is completed, the control car machining drive motor and the rotating machining axis motor resume operation, and the milling machining mechanism (3) continues to process according to the preset process; during the processing, the cutting fluid is collected on the first surface (11) and the second surface (12) of the base (1) to the guide surface (13), and flows into the chip removal machine (7) through the guide port (15) to realize the recovery of cutting fluid and the separation of waste chips.

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