Automatic clamping device for aerospace fastener machining

Abstract

This invention relates to the field of fastener technology, and in particular to an automatic clamping device for aerospace fastener processing. The device includes a table panel, a support assembly on the outer periphery of the table panel, several sliding holes on the table panel, sliding blocks sliding inside each sliding hole, gripper assemblies on the upper side of each sliding block, a drive rod fixed to the lower side of each sliding block, a fixed wedge block fixed to the lower end of each drive rod, an automatic opening assembly between the table panel and the drive rod, a lifting frame on the lower side of the table panel, a guide lifting assembly between the lifting frame and the table panel, a clamping indirect drive assembly on one side of each fixed wedge block, and a switchable gripper assembly on the lower side of the table panel. This invention, by configuring the table panel, sliding holes, sliding blocks, drive rods, fixed wedge blocks, lifting frame, support plate, support feet, clamping frame, and clamping plate, enables it to perform universal clamping, automatic clamping, synchronous clamping, gripper selection, automatic switching, and automatic opening functions.

Description

Technical Field

[0001] This invention relates to the field of fastener technology, and in particular to an automatic clamping device for aerospace fastener processing. Background Technology

[0002] Fasteners are a wide range of mechanical parts used for fastening connections. They are used in a broad range of industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, mold making, and hydraulics. Various types of fasteners can be found on all kinds of machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, meters, and supplies, making them the most widely used basic mechanical components. Fasteners are characterized by their numerous varieties and specifications, diverse performance and applications, and a high degree of standardization, serialization, and generalization. Therefore, some people refer to fasteners with existing national standards as standard fasteners, or simply standard parts. During the processing of fasteners, clamps are needed to hold them in place.

[0003] A fixture is a device used in mechanical manufacturing to fix a workpiece in the correct position for operation or inspection; it is also called a clamp. In a broader sense, any device used to quickly, conveniently, and safely install a workpiece at any stage of the manufacturing process can be called a fixture.

[0004] Existing fixtures are mostly divided into vise fixtures and chuck fixtures. Vise fixtures can only clamp and fix square workpieces, while chuck fixtures can only clamp and fix rotating workpieces. These two types of fixtures cannot clamp both square and rotating workpieces, resulting in poor versatility. Therefore, when changing the workpiece to be clamped, the fixture also needs to be changed, which is extremely inconvenient. To address this issue, we propose an automatic clamping device for aerospace fastener processing to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing fixtures, which are mostly divided into vise fixtures and chuck fixtures. Vise fixtures can only clamp and fix square workpieces, and chuck fixtures can only clamp and fix rotating workpieces. These two types of fixtures cannot clamp both square and rotating workpieces, resulting in poor versatility. Therefore, when changing the workpiece to be clamped, the fixture also needs to be changed, which is extremely inconvenient. Therefore, this invention proposes an automatic clamping device for aerospace fastener processing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design an automatic clamping device for aerospace fastener processing, including a table panel, a support assembly on the outer periphery of the table panel, several sliding holes on the table panel, sliding blocks sliding inside each sliding hole, a gripper assembly on the upper side of each sliding block, a drive rod fixed to the lower side of each sliding block, a fixed wedge block fixed to the lower end of each drive rod, an automatic opening assembly between the table panel and the drive rod, a lifting frame on the lower side of the table panel, a guide lifting assembly between the lifting frame and the table panel, a clamping indirect drive assembly on one side of each fixed wedge block, and a switchable gripper assembly on the lower side of the table panel.

[0008] Preferably, the support assembly includes several support plates, each of which is fixed to the outer periphery of the tabletop, and each of the support plates has a support foot fixed to its lower side.

[0009] Preferably, the number of sliding holes is eight, four of which are equally spaced circumferentially, and six of which are equally spaced circumferentially.

[0010] Preferably, the gripper assembly includes a clamping frame, which is fixed to the upper side of the sliding block. A clamping plate is fixed on the clamping frame, and the clamping plate is provided with a plurality of anti-slip textures.

[0011] Preferably, the automatic opening component includes a polygonal block, which is fixed to the lower side of the table panel. A spring is fixed to one side of each drive rod. The polygonal block is provided with several receiving slots, and the other end of each spring is fixed to the inside of the receiving slot.

[0012] Preferably, the guide lifting assembly includes a fixed frame, with several guide rods fixed to the upper side of the fixed frame. The other end of each guide rod is fixed to the lower side of the platform. The lifting frame has several guide holes, and each guide rod can slide inside the guide holes. A drive frame is fixed to the inner side of the lifting frame, and the drive frame has a threaded hole. A threaded rod is threadedly connected to the inner side of the threaded hole. The lower side of the polygonal block has a mounting groove, and the upper end of the threaded rod can rotate inside the mounting groove. The lower side of the fixed frame has a through hole, and the threaded rod can rotate inside the through hole. A hydraulic motor is fixed to the lower side of the fixed frame. The hydraulic motor needs to be connected to an external oil pump through an oil pipe. The shaft end of the hydraulic motor is connected to the outer periphery of the threaded rod through a bevel gear transmission.

[0013] Preferably, the clamping indirect drive assembly includes an inclined drive frame that can contact the fixed wedge block. The inclined drive frame has a through hole, and a connecting shaft is rotatably mounted inside the through hole. Two connecting seats are fixed to the outer periphery of the connecting shaft, and the connecting seats are all fixed to the lower side of the lifting frame. A plurality of friction-reducing wheels are provided on one side of the inclined drive frame. A support shaft is rotatably mounted inside each friction-reducing wheel, and two support seats are fixed to the outer periphery of each support shaft. The support seats are all fixed to the inclined drive frame.

[0014] Preferably, the switchable selectable gripper assembly includes a fixed ring, which is fixed to the lower side of the table panel. A rotating ring is rotatably arranged inside the fixed ring. A drive rotation assembly is provided on one side of the rotating ring. Ten selectable uprights are fixed to the lower side of the rotating ring. Six of the selectable uprights are evenly spaced in a circle, and the remaining four selectable uprights are evenly spaced in a circle. The selectable uprights can contact the friction-reducing wheel.

[0015] Preferably, the drive rotation assembly includes a connecting block fixed to the outer periphery of the rotating ring. The fixed ring has an arc-shaped hole, and the connecting block can slide inside the arc-shaped hole. An arc-shaped rack is fixed to the connecting block, and a B-stepper motor is provided on one side of the arc-shaped rack. The B-stepper motor is fixed to a support foot and needs to be externally connected to a drive controller and power supply via wires. A spur gear is fixed to the shaft end of the B-stepper motor, and the spur gear and the arc-shaped rack are connected by meshing transmission. An arc-shaped guide rail is fixed to the outer periphery of the fixed ring. The cross-section of the arc-shaped guide rail is U-shaped, and the arc-shaped rack can slide inside the arc-shaped guide rail.

[0016] Preferably, a support block is fixed to the upper side of the table panel, and the support block has a cylindrical structure.

[0017] The automatic clamping device for aerospace fastener processing proposed in this invention has the following advantages:

[0018] (1) By setting a table panel, sliding hole, sliding block, drive rod, fixed wedge block, lifting frame, support plate, support foot, gripper assembly, guide lifting assembly, clamping indirect drive assembly, switchable gripper assembly, and drive rotation assembly, it has a universal clamping function and can clamp plate-shaped workpieces, round workpieces, square workpieces, hexagonal workpieces and square workpieces. It has strong versatility, and there is no need to change the fixture when changing the workpiece to be processed, which is convenient to use.

[0019] (2) By setting up a table panel, sliding hole, sliding block, drive rod, fixed wedge block, lifting frame, gripper assembly, guide lifting assembly, and clamping indirect drive assembly, it has automatic clamping and synchronous clamping functions, can automatically bring multiple clamping plates close to each other, can achieve automatic clamping, is easy to use, has high clamping efficiency, and can indirectly improve processing efficiency.

[0020] (3) By setting sliding holes, sliding blocks, driving rods, fixed wedge blocks, switchable gripper components, and driving rotation components, it has gripper selection and automatic switching functions. It can automatically switch and select the gripper to be used, select the appropriate clamping method according to the workpiece structure, and quickly switch the usage mode. It has high convenience and is easy to use.

[0021] (4) By setting sliding holes, sliding blocks, drive rods, fixed wedge blocks, automatic opening components, and clamping indirect drive components, it has the functions of automatic opening and reducing friction. When it is necessary to release the workpiece, it can be determined that the clamping plates can automatically open, making it easy to remove the workpiece and easy to use. When clamping the workpiece, the friction-reducing wheel can reduce the friction, which can smoothly clamp the workpiece and improve the service life of the parts. Attached Figure Description

[0022] Figure 1 This is a front perspective view of an automatic clamping device for aerospace fastener processing proposed in this invention.

[0023] Figure 2 This is a front-section three-dimensional structural diagram of an automatic clamping device for aerospace fastener processing proposed in this invention;

[0024] Figure 3 This is a front-section isometric view of the automatic clamping device for aerospace fastener processing proposed in this invention.

[0025] Figure 4 The invention proposed Figure 3 A magnified schematic diagram of a portion of area A in the middle;

[0026] Figure 5 This is a top-section three-dimensional structural diagram of an automatic clamping device for aerospace fastener processing proposed in this invention;

[0027] Figure 6 The invention proposed Figure 5 A magnified schematic diagram of a portion of region B.

[0028] In the diagram: 1. Panel, 2. Sliding hole, 3. Sliding block, 4. Drive rod, 5. Fixed wedge block, 6. Lifting frame, 7. Support plate, 8. Support foot, 9. Clamping frame, 10. Clamping plate, 11. Polygonal block, 12. Spring, 13. Fixing frame, 14. Guide rod, 15. Drive frame, 16. Threaded rod, 17. Hydraulic motor, 18. Inclined drive frame, 19. Connecting shaft, 20. Connecting seat, 21. Friction reducing wheel, 22. Support shaft, 23. Support seat, 24. Fixing ring, 25. Rotating ring, 26. Selecting upright, 27. Connecting block, 28. Arc hole, 29. Arc rack, 30. Stepper motor, 31. Spur gear, 32. Arc guide rail, 33. Lifting block. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Reference Figure 1-6 An automatic clamping device for aerospace fastener processing includes a table panel 1. A lifting block 33 is fixed on the upper side of the table panel 1. The lifting block 33 has a cylindrical structure and can be used to lift the workpiece. A support assembly is provided on the outer periphery of the table panel 1. The support assembly includes several support plates 7, which are all fixed on the outer periphery of the table panel 1. Support feet 8 are fixed on the lower side of each support plate 7. A number of sliding holes 2 are provided on the table panel 1. There are eight sliding holes 2 in total. Four of the eight sliding holes 2 are evenly distributed in a circle, and six of the eight sliding holes 2 are evenly distributed in a circle. Sliding blocks 3 slide inside each sliding hole 2. A gripper assembly is provided on the upper side of each sliding block 3. The gripper assembly includes a clamping frame 9, which is fixed on the upper side of the sliding block 3. A clamping plate 10 is fixed on the clamping frame 9. The clamping plate 10 is provided with several anti-slip textures.

[0031] Each sliding block 3 has a drive rod 4 fixed to its lower side, and each drive rod 4 has a fixed wedge block 5 fixed to its lower end. An automatic opening assembly is provided between the table panel 1 and the drive rod 4. The automatic opening assembly includes a polygonal block 11, which is fixed to the lower side of the table panel 1. Each drive rod 4 has a spring 12 fixed to one side, and the polygonal block 11 has several receiving grooves. The other end of each spring 12 is fixed to the inside of the receiving groove. The use of sliding holes 2, sliding blocks 3, drive rods 4, fixed wedge blocks 5, automatic opening assembly, and clamping indirect drive assembly enables it to have automatic opening and friction reduction functions. When it is necessary to release the workpiece, it can be determined that the clamping plates 10 can automatically open, making it easy to remove the workpiece and convenient to use. When clamping the workpiece, the friction reduction wheel 21 can reduce the friction, which can smoothly clamp the workpiece and improve the service life of the parts. When it is necessary to release the workpiece, the hydraulic motor 17 can be rotated in reverse to lower the lifting frame 6. After the lifting frame 6 lowers, the clamping frame 9 will move automatically due to the tension of the spring 12, thereby allowing multiple clamping frames 9 to open automatically, making it easier to remove the workpiece and making it convenient to use.

[0032] A lifting frame 6 is provided on the underside of the tabletop 1. A guide lifting assembly is provided between the lifting frame 6 and the tabletop 1. The guide lifting assembly includes a fixed frame 13. Several guide rods 14 are fixed on the upper side of the fixed frame 13. The other end of the guide rods 14 is fixed on the underside of the tabletop 1. Several guide holes are provided on the lifting frame 6. All guide rods 14 can slide inside the guide holes. A drive frame 15 is fixed inside the lifting frame 6. A threaded hole is provided on the drive frame 15. A threaded rod 16 is connected to the inside of the threaded hole by a thread. An installation groove is provided on the lower side of the polygonal block 11. The upper end of the threaded rod 16 can rotate inside the installation groove. A through hole is provided on the lower side of the fixed frame 13. The threaded rod 16 can rotate inside the through hole. A hydraulic motor 17 is fixed on the lower side of the fixed frame 13. The hydraulic motor 17 needs to be connected to an external oil pump through an oil pipe. The shaft end of the hydraulic motor 17 is connected to the outer periphery of the threaded rod 16 by a bevel gear transmission.

[0033] Each side of the fixed wedge block 5 is equipped with a clamping indirect drive assembly, which includes an inclined drive frame 18. The inclined drive frame 18 can contact the fixed wedge block 5. The inclined drive frame 18 has a through hole, and a connecting shaft 19 rotates inside the through hole. Two connecting seats 20 are fixed on the outer periphery of the connecting shaft 19. The connecting seats 20 are all fixed to the lower side of the lifting frame 6. One side of the inclined drive frame 18 is equipped with several friction-reducing wheels 21. A support shaft 22 rotates inside each friction-reducing wheel 21. Two support seats 23 are fixed on the outer periphery of each support shaft 22. The support seats 23 are all fixed on the inclined drive frame 18. The system uses a platform 1, sliding hole 2, sliding block 3, drive rod 4, fixed wedge block 5, lifting frame 6, gripper assembly, guide lifting assembly, and clamping indirect drive assembly to enable automatic clamping and synchronous clamping functions. It can automatically bring multiple clamping plates 10 together to achieve automatic clamping. It is easy to use and has high clamping efficiency, which can indirectly improve processing efficiency. When it is necessary to clamp the workpiece, the hydraulic motor 17 can be controlled to rotate. When the hydraulic motor 17 rotates, it will drive the threaded rod 16 to rotate through the bevel gear. When the threaded rod 16 rotates, it will cause the drive frame 15 and the lifting frame 6 to rise or fall. When the lifting frame 6 rises or falls, it will drive the inclined drive frame 18 to move together. When the friction-reducing wheel 21 on the inclined drive frame 18 contacts the selection rod 26, the inclined drive frame 18 will rotate. The multiple friction-reducing wheels 21 on the inclined drive frame 18 will be in the same vertical position. At the same time, the fixed wedge block 5 will slide on the inclined drive frame 18, so that the sliding block 3, the drive rod 4 and the fixed wedge block 5 can move. The sliding block 3 can drive the clamping frame 9 and the clamping plate 10 to move together, so that multiple clamping frames 9 and clamping plates 10 can move closer to each other, and automatic clamping and synchronous clamping can be achieved.

[0034] A switchable gripper assembly is provided on the underside of the table panel 1. The switchable gripper assembly includes a fixing ring 24, which is fixed to the underside of the table panel 1. A rotating ring 25 rotates inside the fixing ring 24. A drive rotation assembly is provided on one side of the rotating ring 25. The drive rotation assembly includes a connecting block 27, which is fixed to the outer periphery of the rotating ring 25. An arc-shaped hole 28 is provided on the fixing ring 24, and the connecting block 27 can slide inside the arc-shaped hole 28. An arc-shaped rack 29 is fixed on the connecting block 27. A B stepper motor 30 is provided on one side of the arc-shaped rack 29. The B stepper motor 30 is fixed to the support foot 8. The B stepper motor 30 needs to be connected to an external drive controller and power supply through wires. A spur gear 31 is fixed to the shaft end of the B stepper motor 30. The spur gear 31 and the arc-shaped rack 29 are connected to the support foot 8. The components 9 are connected by meshing transmission. An arc-shaped guide rail 32 is fixed on the outer circumference of the fixed ring 24. The arc-shaped guide rail 32 has a U-shaped cross-section. The arc-shaped rack 29 can slide on the inner side of the arc-shaped guide rail 32. Ten selectable uprights 26 are fixed on the lower side of the rotating ring 25. Six of the selectable uprights 26 are evenly divided in a circle, and the remaining four selectable uprights 26 are also evenly divided in a circle. The selectable uprights 26 can contact the friction-reducing wheel 21. The system uses a table panel 1, sliding hole 2, sliding block 3, drive rod 4, fixed wedge block 5, lifting frame 6, support plate 7, support foot 8, gripper assembly, guide lifting assembly, clamping indirect drive assembly, switchable selectable gripper assembly, and drive rotation assembly, giving it a universal clamping function that can clamp plate-shaped workpieces and round workpieces. Square, hexagonal, and square workpieces offer strong versatility. Changing the workpiece to be processed does not require changing the fixture, making it easy to use. In use, the workpiece to be clamped is placed on the support block 33, positioned between multiple clamping plates 10. Then, by controlling the rotation of the hydraulic motor 17, the lifting frame 6 automatically rises. As the lifting frame 6 rises, it drives the inclined drive frame 18 to rise as well. When the drive frame 18 rises, some of the clamping plates 10 move closer together, thus achieving clamping. When another workpiece needs to be clamped, the B stepper motor 30 can be controlled to rotate. This rotation drives the rotating ring 25 and the selection rod 26 to rotate together, allowing selection of different clamping frames 9 and clamping plates 10 to clamp the workpiece, thus achieving versatility. The clamping function employs a sliding hole 2, a sliding block 3, a drive rod 4, a fixed wedge block 5, a switchable gripper assembly, and a drive rotation assembly, enabling it to select and automatically switch between grippers. It can automatically select the required gripper and choose the appropriate clamping method based on the workpiece structure. It allows for quick switching between usage modes, offering high convenience and ease of use. When different clamping frames 9 and clamping plates 10 need to be rotated to clamp the workpiece, the B stepper motor 30 can be controlled to rotate a certain number of times. The rotation of the B stepper motor 30 drives the spur gear 31 to rotate, which in turn drives the arc-shaped rack 29 to move. The arc-shaped rack 29 then drives the rotating ring 25 and the selection rod 26 to rotate, allowing the selection rod 26 to rotate to different positions, achieving automatic switching.Different clamping frames 9 and clamping plates 10 can be selected for use, and different numbers of clamping frames 9 can be selected for use. The drive rod 4 on one side of the inclined drive frame 18 will only move when the inclined drive frame 18 rises, provided it is positioned between the drive rod 4 and the selection rod 26. This enables the gripper selection function. Selecting six clamping frames 9 allows for clamping round and hexagonal workpieces; selecting four clamping frames 9 allows for clamping square or rectangular workpieces; and selecting two clamping frames 9 allows for clamping plate-shaped or rectangular workpieces, facilitating use.

[0035] It should be noted that:

[0036] The hydraulic motor 17 and stepper motor 30 mentioned in this application are existing technologies, and their specific usage methods and functions will not be described in detail here.

[0037] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., 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 for simplifying the description, and do not 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic clamping device for aerospace fastener machining, comprising a table board (1), characterized in that, The periphery of the table board (1) is provided with a supporting assembly, the table board (1) is provided with a plurality of sliding holes (2), the inner side of the sliding hole (2) is slidably provided with a sliding block (3), the upper side of the sliding block (3) is provided with a clamping jaw assembly, the lower side of the sliding block (3) is fixedly provided with a driving rod (4), the lower end of the driving rod (4) is fixedly provided with a fixed wedge block (5), the table board (1) and the driving rod (4) are provided with an automatic opening assembly, the lower side of the table board (1) is provided with a lifting frame (6), the lifting frame (6) and the table board (1) are provided with a guide lifting assembly, one side of the fixed wedge block (5) is provided with a clamping indirect driving assembly, the lower side of the table board (1) is provided with a switchable selection clamping jaw assembly. The clamping indirect driving assembly comprises a bevel driving frame (18), the bevel driving frame (18) can be in contact with the fixed wedge block (5), the bevel driving frame (18) is provided with a through hole, the inner side of the through hole is rotatably provided with a connecting shaft (19), the outer periphery of the connecting shaft (19) is fixedly provided with two connecting seats (20), the connecting seats (20) are fixedly arranged on the lower side of the lifting frame (6), one side of the bevel driving frame (18) is provided with a plurality of friction reduction wheels (21), the inner side of the friction reduction wheel (21) is rotatably provided with a supporting shaft (22), the outer periphery of the supporting shaft (22) is fixedly provided with two supporting seats (23), and the supporting seats (23) are fixedly arranged on the bevel driving frame (18). The switchable selection clamping jaw assembly comprises a fixed ring (24), the fixed ring (24) is fixedly arranged on the lower side of the table board (1), the inner side of the fixed ring (24) is rotatably provided with a rotating ring (25), one side of the rotating ring (25) is provided with a driving rotation assembly, the lower side of the rotating ring (25) is fixedly provided with ten selection vertical rods (26), six of the selection vertical rods (26) are circumferentially equally arranged, the remaining four selection vertical rods (26) are circumferentially equally arranged, and the selection vertical rods (26) can be in contact with the friction reduction wheels (21).

2. An automatic clamping device for aerospace fastener machining according to claim 1, characterized in that, The supporting assembly comprises a plurality of supporting plates (7), the supporting plates (7) are fixedly arranged on the periphery of the table board (1), and the lower side of the supporting plate (7) is fixedly provided with a supporting leg (8).

3. An automatic clamping device for aerospace fastener machining according to claim 1, characterized in that, The number of the sliding holes (2) is eight, four of the sliding holes (2) are circumferentially equally arranged, and the remaining six sliding holes (2) are circumferentially equally arranged.

4. An automatic clamping device for aerospace fastener machining according to claim 1, characterized in that, The clamping jaw assembly comprises a clamping frame (9), the clamping frame (9) is fixedly arranged on the upper side of the sliding block (3), the clamping frame (9) is fixedly provided with a clamping plate (10), and the clamping plate (10) is provided with a plurality of anti-skid lines.

5. An automatic clamping device for aerospace fastener machining according to claim 1, characterized in that, The automatic opening assembly comprises a polygonal block (11), the polygonal block (11) is fixedly arranged on the lower side of the table board (1), one side of the driving rod (4) is fixedly provided with a spring (12), the polygonal block (11) is provided with a plurality of accommodating grooves, and the other end of the spring (12) is fixedly arranged on the inner side of the accommodating groove.

6. An automatic clamping device for aerospace fastener machining according to claim 5, characterized in that, The guiding and lifting assembly comprises a fixed frame (13), a plurality of guide rods (14) are fixed on the upper side of the fixed frame (13), the other ends of the guide rods (14) are fixed on the lower side of the table board (1), a plurality of guide holes are arranged on the lifting frame (6), the guide rods (14) can slide in the guide holes, a driving frame (15) is fixed on the inner side of the lifting frame (6), a threaded hole is arranged on the driving frame (15), a threaded rod (16) is connected to the inner side of the threaded hole through screw threads, an installation groove is arranged on the lower side of the polygonal block (11), the upper end of the threaded rod (16) can rotate in the inner side of the installation groove, a through hole is arranged on the lower side of the fixed frame (13), the threaded rod (16) can rotate in the inner side of the through hole, a hydraulic motor (17) is fixed on the lower side of the fixed frame (13), the hydraulic motor (17) is connected to an oil pump through an oil pipe, and the shaft end of the hydraulic motor (17) is connected to the outer periphery of the threaded rod (16) through a bevel gear transmission.

7. An automatic clamping device for aerospace fastener machining according to claim 2, characterized in that, The driving and rotating assembly comprises a connecting block (27), the connecting block (27) is fixed on the outer periphery of the rotating ring (25), an arc-shaped hole (28) is arranged on the fixed ring (24), the connecting block (27) can slide in the inner side of the arc-shaped hole (28), an arc-shaped rack (29) is fixed on the connecting block (27), a B stepping motor (30) is arranged on one side of the arc-shaped rack (29), the B stepping motor (30) is fixed on the supporting leg (8), the B stepping motor (30) is connected to a driving controller and a power supply through wires, a spur gear (31) is fixed on the shaft end of the B stepping motor (30), the spur gear (31) is connected to the arc-shaped rack (29) through meshing transmission, an arc-shaped guide rail (32) is fixed on the outer periphery of the fixed ring (24), the cross section of the arc-shaped guide rail (32) is in a U-shaped structure, and the arc-shaped rack (29) can slide in the inner side of the arc-shaped guide rail (32).

8. An automatic clamping device for aerospace fastener machining according to claim 1, characterized in that, The upper side of the table board (1) is fixed with a lifting block (33), and the lifting block (33) is in a cylindrical structure.

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