A mutual rotation table for a CNC machining center

Abstract

The present invention belongs to the technical field of machine tool equipment, specifically a mutually rotating material table of a CNC machining center, comprising a base and a swing arm, a left machine base and a right machine base are respectively provided at the axial ends of the base, the swing arm is installed between the left machine base and the right machine base, and the working surface of the swing arm is installed with a first turntable and a second turntable; the inner cavity of the right machine base is integrated with a first drive assembly and a second drive assembly, and the inner cavity of the swing arm is integrated with a transmission assembly; the output end of the first drive assembly is fixedly connected to the swing arm, and the output end of the second drive assembly is drive-connected to the input end of the transmission assembly, and the output end of the transmission assembly drives the first turntable and the second turntable respectively through a clutch reversing assembly, thereby realizing independent drive control of the first turntable and the second turntable. The present invention realizes the independent rotation function of the first and second turntables, breaks through the motion synchronization limitation of traditional mutually rotating material tables, and provides a more flexible motion control solution for multi-spindle CNC machining centers.

Description

Technical Field

[0001] The invention belongs to the technical field of machine tool equipment, in particular to an inter-rotating material table of a numerical control machining center. Background Art

[0002] A dual-spindle CNC machining center (such as the GROB G720F) is a CNC machine tool equipped with two independent spindles. Through coordinated or alternating operation, the spindles enable concurrent machining of multiple processes. A CNC rotary table, a mechanical worktable capable of rotating about both vertical and horizontal axes, is a core functional component of CNC machine tools. It significantly enhances the multi-angle machining capabilities of complex parts by expanding machining angles.

[0003] The Chinese invention patent with publication number CN118699816A discloses a cradle-type five-axis machining center based on dual spindles and dual discs, which includes a base, a vertical frame, an X-slide, a Y-slide, a Z-lifting plate, a U-slide, a V-slide, a Z-lifting plate, a Z-lifting plate and a dual-disc cradle turntable; the vertical frame is installed at one end of the top surface of the base, and the top surface of the base is equipped with a Y-driving member for driving the Y-slide; the top surface of the Y-slide is equipped with an X-driving member for driving the X-slide; the vertical frame is equipped with a Z-driving member for driving the Z-lifting plate; the top surface of the Z-lifting plate is equipped with a V-driving member for driving the V-slide; the top surface of the Z-lifting plate is equipped with a U-driving member for driving the U-slide; the side of the V-slide is equipped with a Z-driving member for driving the Z-lifting plate, and the side of the U-slide is equipped with a Z-driving member for driving the Z-lifting plate; the dual-disc cradle turntable is installed on the top surface of the X-slide; the Z-lifting plate and the top of the Z-lifting plate are both equipped with machining motors.

[0004] The aforementioned technical solution uses a dual-disc cradle turntable to simultaneously process two workpieces, enabling multi-step parallel processing and significantly improving the machining efficiency of complex parts. However, the motion control of the two disks is strongly correlated, making it impossible to achieve completely independent asynchronous motion during the machining process. Summary of the Invention

[0005] The purpose of the present invention is to provide a mutually rotating material table for a CNC machining center, aiming to solve the motion synchronization limitations of traditional mutually rotating material tables and provide a more flexible motion control solution for multi-spindle CNC machining centers.

[0006] To achieve the above-mentioned objectives, the present invention provides a mutually rotating material table of a CNC machining center, comprising a base and a swing arm, wherein a left machine base and a right machine base are respectively provided at the axial ends of the base, the swing arm is installed between the left machine base and the right machine base, and the working surface of the swing arm is installed with a first turntable and a second turntable; the inner cavity of the right machine base is integrated with a first drive assembly and a second drive assembly, and the inner cavity of the swing arm is integrated with a transmission assembly; the output end of the first drive assembly is fixedly connected to the swing arm, and the output end of the second drive assembly is drive-connected to the input end of the transmission assembly, and the output end of the transmission assembly drives the first turntable and the second turntable respectively through a clutch reversing assembly to realize independent drive control of the first turntable and the second turntable.

[0007] Preferably, a fifth transmission shaft and a sixth transmission shaft are installed in the inner cavity of the swing arm, the shaft end of the sixth transmission shaft is fixedly connected to the first turntable, and the shaft end of the fifth transmission shaft is fixedly connected to the second turntable; the transmission assembly includes a first transmission shaft and a second transmission shaft installed in the inner cavity of the swing arm, one end of the first transmission shaft is driven and connected to the sixth transmission shaft through a first right-angle gear box, the other end of the first transmission shaft is provided with a first transmission pulley, one end of the second transmission shaft is driven and connected to the fifth transmission shaft through a second right-angle gear box, the other end of the second transmission shaft is provided with a second transmission pulley, and the output end of the second drive assembly is provided with a main pulley, and the main pulley is connected to the first transmission pulley and the second transmission pulley through a belt.

[0008] Preferably, the clutch reversing assembly includes a first rotating shaft, a second rotating shaft, a third rotating shaft and a sleeve; a second passive claw disk is nested on the outer side of the shaft body of the first transmission shaft and the second transmission shaft, a third gear is fixed to one end of the second passive claw disk, a first passive claw disk is fixed to one end of the third rotating shaft, and the other end of the third rotating shaft is fixedly connected to the input shaft of the first right-angle gearbox or the second right-angle gearbox; a seventh gear is fixed to the shaft body of the third rotating shaft, a fourth gear meshed with the seventh gear is fixed to the shaft body of the second rotating shaft, a sixth gear meshed with the fourth gear is fixed to one end of the first rotating shaft, and a fifth gear meshed with the third gear is fixed to the other end of the first rotating shaft; tooth grooves corresponding to the first passive claw disk and the second passive claw disk are respectively provided at both ends of the sleeve, and the sleeve is meshed with the first passive claw disk or the second passive claw disk through the actuator assembly.

[0009] Preferably, the actuator assembly includes a retaining frame, the outer wall of the sleeve is provided with a slot, one end of the retaining frame is rotatably connected to a positioning shaft provided in the inner cavity of the swing arm, the other end of the retaining frame is provided with a U-shaped cavity, rollers are installed on both sides of the U-shaped cavity, the rollers are embedded in the slot, a cylinder is hinged on one side of the inner cavity of the swing arm, and the push rod end of the cylinder is hinged to the retaining frame.

[0010] Preferably, the transmission ratio between the fifth gear and the third gear is consistent with the transmission ratio between the sixth gear, the fourth gear and the seventh gear.

[0011] Preferably, the shaft ends of the first transmission shaft and the second transmission shaft are both provided with keyways, the keyways are embedded with guide flat keys, the shaft sleeves are sleeved on the outside of the first transmission shaft and the second transmission shaft, and the inner wall of the shaft sleeves is provided with guide grooves adapted to the guide flat keys.

[0012] Preferably, oil storage grooves are provided at both ends of the inner wall of the shaft sleeve, and an oil filling hole communicating with the oil storage grooves is provided on the outer wall of the shaft sleeve.

[0013] Preferably, the working surface of the right machine base is equipped with a right connecting plate, the working surface of the left machine base is equipped with a left connecting plate, one end of the swing arm is fixedly connected to the right connecting plate, and the other end of the swing arm is fixedly connected to the left connecting plate.

[0014] Preferably, the swing arm consists of a left swing arm and a right swing arm, the first turntable is installed on the working surface of the left swing arm, the second turntable is installed on the working surface of the right swing arm, the output end of the first drive assembly is connected to the right connecting disk, the inner cavity of the left machine base is integrated with a third drive assembly for driving the left connecting disk, one end of the left swing arm is fixedly connected to the left connecting disk, the other end of the left swing arm is provided with a connecting shaft, the end of the connecting shaft is rotatably connected to one end of the right swing arm, and the other end of the right swing arm is fixedly connected to the right connecting disk.

[0015] After adopting the above technical solution, the beneficial effects of the present invention are:

[0016] The present invention realizes the independent rotation function of the first and second turntables, breaks through the motion synchronization limitation of traditional mutually rotating material tables, and provides a more flexible motion control solution for multi-spindle CNC machining centers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 Schematic diagram of the internal structure of the present invention;

[0020] Figure 3 is a structural diagram of the transmission component;

[0021] Figure 4 is a structural schematic diagram of the first drive assembly;

[0022] Figure 5 This is a schematic diagram of the installation of the clutch reversing assembly;

[0023] Figure 6 It is a schematic diagram of the structure of the clutch reversing component;

[0024] Figure 7 This is a schematic diagram of the installation of the sleeve;

[0025] Figure 8 Schematic diagram of the structure of the shaft sleeve;

[0026] Figure 9 Schematic diagram of the structure of the first turntable;

[0027] Figure 10 Schematic diagram of the structure of the swing arm.

[0028] Description of the accompanying drawings: 1-base, 2-left machine base, 3-first turntable, 4-second turntable, 5-right machine base, 6-swing arm, 7-right connecting plate, 8-first drive assembly, 9-second drive assembly, 10-transmission assembly, 11-second transmission shaft, 12-main pulley, 13-worm gear, 14-first motor, 15-second motor, 16-worm, 17-second transmission pulley, 18-first transmission pulley, 19-clutch reversing assembly, 20-first transmission shaft, 21-first right-angle gearbox, 22-third transmission shaft, 23-fourth transmission shaft, 24-first gear, 25-second gear, 26-third gear, 27-first rotating shaft, 28-first bevel gear, 29-fifth transmission shaft, 30-second bevel gear, 31-second right-angle gearbox, 32-second rotating shaft, 33-fourth gear, 34-third rotating shaft, 35-cylinder, 36-fifth gear, 37-retaining frame, 38-sixth gear, 39-seventh gear, 40-first passive claw plate, 41-sleeve, 42-second passive claw plate, 43-slot, 44-guide flat key, 45-roller, 46-positioning shaft, 47-guide groove, 48-oil storage tank, 49-oil filling hole, 50-third bevel gear, 51-sixth transmission shaft, 52-fourth bevel gear, 53-third drive assembly, 54-left connecting plate, 55-left swing arm, 56-right swing arm, 57-connecting shaft. DETAILED DESCRIPTION

[0029] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present invention by illustrating examples of the present invention.

[0030] The directional words appearing in the following description refer to the directions shown in the drawings and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0031] Example 1

[0032] The present invention provides a mutually rotating material table for a CNC machining center, comprising a machine body, a swing arm 6, a first drive assembly 8, a second drive assembly 9 and a transmission assembly 10.

[0033] like Figure 1 As shown, the machine body comprises a base 1, with a left base 2 and a right base 5 positioned in an opposing arrangement at either axial end of the base 1. The working surface of the right base 5 is fitted with a right connecting plate 7, while the working surface of the left base 2 is fitted with a left connecting plate 54, which is axially concentric with the right connecting plate 7, ensuring a coaxiality error of ≤0.02mm between the two plates. A swing arm 6 is rigidly connected to the right connecting plate 7 and the left connecting plate 54 via bolts. The working surface of the swing arm 6 is mounted with a first turntable 3 and a second turntable 4, which are arranged linearly in the axial direction, forming a dual-station machining layout.

[0034] like Figures 2 to 4 As shown, the first drive assembly 8 includes a first motor 14 fixedly mounted within the interior of the right machine base 5, a worm 16, and a third transmission shaft 22, each mounted within the interior of the right machine base 5 via a bearing block. A first gear 24 is fixed to the motor shaft of the first motor 14, meshing with a second gear 25 fixed to the end of the worm 16, forming a primary reduction gear. One end of the third transmission shaft 22 is fixedly connected to the right connecting plate 7, and the worm 16 meshes with a worm gear 13 fixed to the shaft of the third transmission shaft 22, forming a secondary reduction gear.

[0035] When the first motor 14 is working, the first gear 24 drives the second gear 25 to rotate, which in turn drives the worm 16 to rotate. The worm 16 and the worm wheel 13 form a spatial staggered axis transmission to achieve synchronous rotation of the third transmission shaft 22. Finally, the amplified torque is transmitted to the right connecting plate 7 to drive the swing arm 6 to execute the swing command.

[0036] like Figures 2 to 4 As shown, the second drive assembly 9 includes a second motor 15 fixedly mounted within the inner cavity of the right base 5. A third transmission shaft 22 is a hollow shaft, within which a fourth transmission shaft 23 is mounted via bearings, forming a dual-shaft nested structure. One end of the fourth transmission shaft 23 passes through the right connecting plate 7, where the main pulley 12 is fixed. The other end of the fourth transmission shaft 23 is fixedly connected to the motor shaft of the second motor 15 via a coupling.

[0037] like Figure 5 and Figure 9 As shown, the inner cavity of the swing arm 6 is respectively mounted with a fifth transmission shaft 29 and a sixth transmission shaft 51 via bearing seats. Within the inner cavity of the swing arm 6, a second right-angle gearbox 31 is fixed to one side of the fifth transmission shaft 29, and a first right-angle gearbox 21 is fixed to one side of the sixth transmission shaft 51. The shaft end of the fifth transmission shaft 29 is fixedly connected to the second turntable 4, the shaft body of the fifth transmission shaft 29 is fixedly connected to the first bevel gear 28, and the output shaft of the second right-angle gearbox 31 is fixedly connected to the second bevel gear 30 that meshes with the first bevel gear 28. The shaft end of the sixth transmission shaft 51 is fixedly connected to the first turntable 3, the shaft body of the sixth transmission shaft 51 is fixedly connected to the third bevel gear 50, and the output shaft of the first right-angle gearbox 21 is fixedly connected to the fourth bevel gear 52 that meshes with the third bevel gear 50.

[0038] The primary pulley 12 distributes power to the first right-angle gearbox 21 and the second right-angle gearbox 31 through the transmission assembly 10 , thereby achieving the rotational motion of the first and second turntables.

[0039] The transmission assembly 10 includes a first transmission shaft 20 and a second transmission shaft 11, mounted within the inner cavity of the swing arm 6 via a bearing seat. One end of the first transmission shaft 20 is connected to the input shaft of a first right-angle gearbox 21 via a clutch reversing assembly 19. A first transmission pulley 18 is secured to the other end of the first transmission shaft 20, which is connected to the primary pulley 12 via a belt. One end of the second transmission shaft 11 is connected to the input shaft of a second right-angle gearbox 31 via another clutch reversing assembly 19. A second transmission pulley 17 is secured to the other end of the second transmission shaft 11, which is connected to the primary pulley 12 via a belt.

[0040] The first right-angle gearbox 21 and the second right-angle gearbox 31 adopt a planetary gear or bevel gear structure to convert the horizontal rotational motion of the first and second transmission shafts into vertical power output. Through the engagement of the first bevel gear 28 and the second bevel gear 30, and the third bevel gear 50 and the fourth bevel gear 52, a 90° conversion of the transmission direction is achieved, which is suitable for the compact spatial layout of the inner cavity of the swing arm 6.

[0041] like Figures 6 to 8 As shown, the primary pulley 12 transmits power to both the first and second transmission shafts 20 and 11 via belts. By controlling the operating states of the corresponding clutch reversing assemblies 19, asynchronous motion control is enabled for the first and second turntables 3 and 4. Taking the clutch reversing assembly 19 connected to the second transmission shaft 11 as an example, the clutch reversing assembly 19 comprises a first rotating shaft 27, a second rotating shaft 32, a third rotating shaft 34, a retainer 37, and a sleeve 41. The first, second, and third rotating shafts 27, 32, and 34 are each mounted within the inner cavity of the swing arm 6 via bearing seats.

[0042] A second passive claw plate 42 is nested on the outer side of the second transmission shaft 11, forming a nested structure with the second transmission shaft 11 via bearings. A third gear 26 is fixed to one end of the second passive claw plate 42, axially concentric with the second transmission shaft 11. A third rotating shaft 34 is axially concentric with the second transmission shaft 11. The first passive claw plate 40 is fixed to the end of the third rotating shaft 34 facing the second transmission shaft 11. The other end of the third rotating shaft 34 is fixedly connected to the input shaft of the second right-angle gearbox 31.

[0043] A seventh gear 39 is secured to the third rotating shaft 34, while a fourth gear 33, meshing with the seventh gear 39, is secured to the second rotating shaft 32. A sixth gear 38, meshing with the fourth gear 33, is secured to one end of the first rotating shaft 27, while a fifth gear 36, meshing with the third gear 26, is secured to the other end of the first rotating shaft 27. The transmission ratio between the fifth gear 36 and the third gear 26 is consistent with the transmission ratios between the sixth gear 38, the fourth gear 33, and the seventh gear 39, ensuring consistent rotational speeds.

[0044] The end of the second transmission shaft 11 is provided with multiple circumferential keyways, into which guide keys 44 are embedded. A sleeve 41 fits over the outside of the second transmission shaft 11. The inner diameter wall of the sleeve 41 is provided with guide grooves 47 that mate with the guide keys 44, enabling axial guidance and torque transmission. Annular oil reservoirs 48 are provided at both ends of the inner diameter wall of the sleeve 41, and an oil injection hole 49 is provided on the outer wall of the sleeve 41, connecting to the oil reservoirs 48. Slots corresponding to the first and second passive claw discs 40 and 42 are provided at each end of the sleeve 41, and an annular retaining groove 43 is provided on the outer wall of the sleeve 41.

[0045] One end of the retainer 37 is provided with a U-shaped cavity to accommodate the sleeve 41, and the other end of the retainer 37 is rotatably connected to the positioning shaft 46 provided in the inner cavity of the swing arm 6. The sleeve 41 is located in the U-shaped cavity, and rotatable rollers 45 are installed on both sides of the U-shaped cavity. The rollers 45 are embedded in the slots 43 to transmit thrust. The cylinder 35 is hinged to one side of the inner cavity of the swing arm 6, and the end of the push rod of the cylinder 35 is hinged to one side of the U-shaped cavity of the retainer 37. The cylinder 35 drives the retainer 37 to swing around the positioning shaft 46 by pulling or pushing out the push rod. The thrust generated by the swing is transmitted to the sleeve 41 through the rollers 45 embedded in the slots 43, thereby realizing the axial displacement of the sleeve 41 on the second transmission shaft 11.

[0046] Taking the second turntable 4 as an example, its driving principle is explained in detail.

[0047] When the second motor 15 is operating, it drives the fourth transmission shaft 23 through the coupling, which in turn drives the primary pulley 12. The primary pulley 12 transmits power to the second transmission pulley 17 via a belt, achieving synchronous rotation of the second transmission shaft 11. The second transmission shaft 11 then transmits power to the sleeve 41. When the sleeve 41 is in its original position, the second transmission shaft 11 idles, and the second turntable 4 does not rotate.

[0048] When forward rotation of the second turntable 4 is desired, the cylinder 35 pushes the sleeve 41 in its original position, causing it to engage with the second passive claw plate 42, thereby transmitting power. Power is transmitted from the second passive claw plate 42 to the third gear 26, then through the fifth gear 36, the first rotating shaft 27, the sixth gear 38, the fourth gear 33, the seventh gear 39, the third rotating shaft 34, the second right-angle gearbox 31, and the bevel gear pair, ultimately to the fifth transmission shaft 29, forming a complete transmission chain and achieving forward rotation of the second turntable 4.

[0049] When the second turntable 4 needs to rotate in the opposite direction, the cylinder 35 pulls the sleeve 41 into tooth engagement with the first passive claw plate 40, thereby transmitting power. The power is then transmitted from the first passive claw plate 40 through the third rotating shaft 34, the second right-angle gearbox 31, the bevel gear pair, and finally to the fifth transmission shaft 29, forming a complete transmission chain and achieving the reverse rotation of the second turntable 4.

[0050] During the reverse rotation process, although the engagement of the seventh gear 39 and the fourth gear 33 will transmit power to the second passive claw plate 42, since the second passive claw plate 42 forms a dual-axis nested structure with the second transmission shaft 11 through bearings, and the second passive claw plate 42 and the shaft sleeve 41 are in a separated state at this time, the second passive claw plate 42 can only idle and will not affect the normal operation of the second turntable 4.

[0051] In this embodiment, the independent rotation function of the first and second turntables is realized, breaking through the motion synchronization limitation of traditional mutually rotating material tables and providing a more flexible motion control solution for multi-spindle CNC machining centers.

[0052] Example 2

[0053] like Figure 10 As shown, based on the first embodiment, the present invention further includes a third drive assembly 53 integrated in the inner cavity of the left base 2 , whose transmission chain is homologous to the first drive assembly 8 , forming a drive source for the left connecting disk 54 .

[0054] In this embodiment, the swing arm 6 is symmetrically designed, comprising a left swing arm 55 and a right swing arm 56. The first turntable 3 is mounted on the working surface of the left swing arm 55, while the first right-angle gearbox 21, the sixth transmission shaft 51, and the associated clutch reversing assembly 19 are mounted within the inner cavity of the left swing arm 55. Similarly, the second turntable 4 is mounted on the working surface of the right swing arm 56, while the second right-angle gearbox 31, the fifth transmission shaft 29, and the associated clutch reversing assembly 19 are mounted within the inner cavity of the right swing arm 56.

[0055] One end of the left swing arm 55 is rigidly connected to the left connecting plate 54 via a bolt group, and the other end is fixed with a connecting shaft 57. The end of the connecting shaft 57 is rotatably connected to the right swing arm 56 via a bearing seat, realizing the mechanical connection between the left and right swing arms. The other end of the right swing arm 56 is rigidly connected to the right connecting plate 7 via a bolt group.

[0056] The rotational axes of the left and right swing arms 55, 56, and the connecting shaft 57 are axially concentric. One end of the first transmission shaft 20 passes through the connecting shaft 57 and is connected to the input shaft of the second right-angle gearbox 31 within the inner cavity of the left swing arm 55 via the corresponding clutch reversing assembly 19. The first transmission shaft 20 forms a nested structure with the connecting shaft 57 via bearings. This design facilitates power decoupling, ensuring that the power systems of the left and right swing arms are independent and do not interfere with each other.

[0057] The left and right swing arms are driven by the third drive assembly 53 and the first drive assembly 8, respectively. The two drive systems are dynamically decoupled via a connecting shaft 57, allowing the left and right arms to respond to different control commands independently, meaning they can rotate independently at different speeds, directions, or times. The asynchronous motion control capabilities of the left and right swing arms, combined with the independent rotation capabilities of the first and second turntables, enable the entire rotating table to support multi-axis machining of complex surfaces. This overcomes the motion synchronization limitations of traditional rotating tables and provides a more flexible motion control solution for multi-spindle CNC machining centers.

[0058] While the embodiments of the present invention are described above, these embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Clearly, many modifications and variations can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to make good use of the present invention and its modifications and uses. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A rotating table for a CNC machining center, comprising a base (1) and a swing arm (6), characterized in that: A left machine base (2) and a right machine base (5) are respectively provided at the axial ends of the base (1); the swing arm (6) is installed between the left machine base (2) and the right machine base (5); the working surface of the swing arm (6) is installed with a first turntable (3) and a second turntable (4); the inner cavity of the right machine base (5) is integrated with a first drive component (8) and a second drive component (9); the inner cavity of the swing arm (6) is integrated with a transmission component (10); the output end of the first drive component (8) is fixedly connected to the swing arm (6), the output end of the second drive component (9) is drivingly connected to the input end of the transmission component (10), and the output end of the transmission component (10) drives the first turntable (3) and the second turntable (4) respectively through the corresponding clutch reversing component (19), thereby realizing independent drive control of the first turntable (3) and the second turntable (4); The inner cavity of the swing arm (6) is provided with a fifth transmission shaft (29) and a sixth transmission shaft (51), the shaft end of the sixth transmission shaft (51) is fixedly connected to the first turntable (3), and the shaft end of the fifth transmission shaft (29) is fixedly connected to the second turntable (4); the transmission assembly (10) comprises a first transmission shaft (20) and a second transmission shaft (11) installed in the inner cavity of the swing arm (6), one end of the first transmission shaft (20) is connected to the sixth transmission shaft (51) by driving through a first right-angle gearbox (21), and one end of the second transmission shaft (11) is connected to the fifth transmission shaft (29) by driving through a second right-angle gearbox (31); The clutch reversing assembly (19) comprises a first rotating shaft (27), a second rotating shaft (32), a third rotating shaft (34) and a shaft sleeve (41); a second passive claw disc (42) is embedded in the outer side of the shaft body of the first transmission shaft (20) and the second transmission shaft (11); a third gear (26) is fixed to one end of the second passive claw disc (42); a first passive claw disc (40) is fixed to one end of the third rotating shaft (34); the other end of the third rotating shaft (34) is fixedly connected to the input shaft of the first right-angle gearbox (21) or the second right-angle gearbox (31); the shaft body of the third rotating shaft (34) is fixed There is a seventh gear (39), the shaft body of the second rotating shaft (32) is fixed with a fourth gear (33) meshing with the seventh gear (39), one end of the first rotating shaft (27) is fixed with a sixth gear (38) meshing with the fourth gear (33), and the other end of the first rotating shaft (27) is fixed with a fifth gear (36) meshing with the third gear (26); the two ends of the shaft sleeve (41) are respectively provided with tooth grooves corresponding to the first passive claw disk (40) and the second passive claw disk (42), and the shaft sleeve (41) is meshed with the first passive claw disk (40) or the second passive claw disk (42) through the actuator component.

2. The inter-rotating material table of a CNC machining center according to claim 1, characterized in that: The other end of the first transmission shaft (20) is provided with a first transmission pulley (18), the other end of the second transmission shaft (11) is provided with a second transmission pulley (17), and the output end of the second drive assembly (9) is provided with a main pulley (12), and the main pulley (12) is connected to the first transmission pulley (18) and the second transmission pulley (17) through a belt.

3. The inter-rotating material table of a CNC machining center according to claim 1, characterized in that: The transmission ratio between the fifth gear (36) and the third gear (26) is consistent with the transmission ratio between the sixth gear (38), the fourth gear (33), and the seventh gear (39).

4. The inter-rotating material table of a CNC machining center according to claim 1, characterized in that: The actuator assembly includes a retaining frame (37), an outer wall of the shaft sleeve (41) is provided with a slot (43), one end of the retaining frame (37) is rotatably connected to a positioning shaft (46) provided in the inner cavity of the swing arm (6), the other end of the retaining frame (37) is provided with a U-shaped cavity, rollers (45) are installed on both sides of the U-shaped cavity, and the rollers (45) are embedded in the slot (43), a cylinder (35) is hinged to one side of the inner cavity of the swing arm (6), and the push rod end of the cylinder (35) is hinged to the retaining frame (37).

5. The inter-rotating material table of a CNC machining center according to claim 4, characterized in that: The shaft ends of the first transmission shaft (20) and the second transmission shaft (11) are both provided with keyways, wherein the keyways are embedded with guide flat keys (44), and the shaft sleeve (41) is sleeved on the outer sides of the first transmission shaft (20) and the second transmission shaft (11), and the inner wall of the shaft sleeve (41) is provided with guide grooves (47) adapted to the guide flat keys (44).

6. The inter-rotating material table of a CNC machining center according to claim 5, characterized in that: Oil storage grooves (48) are provided at both ends of the inner wall of the shaft sleeve (41), and an oil injection hole (49) communicating with the oil storage grooves (48) is provided on the outer wall of the shaft sleeve (41).

7. The inter-rotating material table of a CNC machining center according to claim 1, characterized in that: The working surface of the right machine base (5) is equipped with a right connecting plate (7), the working surface of the left machine base (2) is equipped with a left connecting plate (54), one end of the swing arm (6) is fixedly connected to the right connecting plate (7), and the other end of the swing arm (6) is fixedly connected to the left connecting plate (54).

8. The inter-rotating material table of a CNC machining center according to claim 7, characterized in that: The swing arm (6) is composed of a left swing arm (55) and a right swing arm (56), the first turntable (3) is installed on the working surface of the left swing arm (55), the second turntable (4) is installed on the working surface of the right swing arm (56), the output end of the first drive component (8) is connected to the right connecting disk (7), the inner cavity of the left machine base (2) is integrated with a third drive component (53) for driving the left connecting disk (54), one end of the left swing arm (55) is fixedly connected to the left connecting disk (54), the other end of the left swing arm (55) is provided with a connecting shaft (57), the end of the connecting shaft (57) is rotatably connected to one end of the right swing arm (56), and the other end of the right swing arm (56) is fixedly connected to the right connecting disk (7).

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