Universal riveting tool and riveting device

Abstract

The present invention relates to the technical field of riveting devices, and discloses a universal riveting tool and a riveting device, comprising a frame and a vibration adjustment frame that can move biaxially on the frame, the vibration adjustment frame being equipped with an elastic reciprocating drive component, the elastic reciprocating drive component being equipped with a vibration riveting frame that can synchronously move up and down and left and right and a rotatable spinning shaft, the spinning shaft being rotatably mounted on the vibration riveting frame, the up and down and left and right reciprocating frequency and reciprocating stroke of the vibration riveting frame being cyclically changed, an execution frame being provided below the vibration riveting frame, and a group of pressure push rods being installed between the vibration riveting frame and the execution frame, a first linear transmission module being installed on the execution frame, and a conversion frame being installed on the first linear transmission module. The present invention adjusts dynamic parameters to accurately adapt to the deformation law of the material, improves the riveting tightness, reduces the risk of crushing or loose riveting, and significantly improves the riveting quality and process adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure riveting devices, and more particularly to a universal pressure riveting tool and a pressure riveting device. Background Art

[0002] In the prior art, the patent document with publication number CN110238341A discloses a rotary riveting mechanism and a heat-sealing riveting press, comprising: a transmission and rotating device and a rotary riveting and pressing device, wherein the rotary riveting and pressing device is arranged at a peripheral position of the transmission and rotating device, and the rotary riveting and pressing device comprises a rotary feeding assembly, a rotary main driving assembly, a lifting and pressing assembly, and a longitudinal rotary riveting assembly, wherein the rotary feeding assembly is used to drive the cap to rotate. The rotary riveting mechanism in the above device has a simple and compact structure and a high degree of automation, and can automatically complete the rotary riveting operation on the cap, thereby reducing labor costs and manual misoperation. However, the above-mentioned pressing riveting device has the following technical problems when used:

[0003] The existing device is not convenient for using dynamic vibration riveting technology to improve the riveting tightness and riveting effect of the riveting device. The specifications of the pressure head are single, the versatility is poor, the degree of automation is insufficient, and the material suction and transfer rely on manual labor.

[0004] Based on this, the present invention provides a universal riveting tool and a riveting device to solve the technical problems raised in the above background technology. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, the present invention provides a universal riveting tool and a riveting device. The dynamic parameter adjustment of the present invention accurately adapts to the deformation law of the material, improves the riveting tightness, reduces the risk of crushing or loose riveting, and significantly improves the riveting quality and process adaptability.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] 1. The present invention innovatively designs a coordination mechanism between the elastic reciprocating drive component and the vibration riveting frame: through the alternating engagement of the large-angle fan gear, the small-angle fan gear and the passive gear, combined with the energy compensation of the energy storage torsion spring, the periodic cyclic change of the up and down, left and right reciprocating frequency and stroke of the vibration riveting frame is realized. At the same time, the spinning shaft drives the upper pressure head to rotate through the friction lines of the transmission pressure plate and the driven pressure plate, and cooperates with the auxiliary vibration of the exciter to make the contact stress distribution between the rivet and the workpiece more uniform and the plastic deformation of the material more sufficient. Compared with the problems of "insufficient pre-pressing and easy deviation" or "insufficient precision pressing time and weak bonding force" caused by the fixed frequency and stroke of traditional riveting devices, the dynamic parameter adjustment of the present invention accurately adapts to the material deformation law, the riveting tightness is improved, and the risk of crushing or loose riveting is reduced, which significantly improves the riveting quality and process adaptability.

[0008] 2. The present invention realizes flexible adaptation of multi-specification riveting through the linkage design of the conversion frame and the driven frame. Multiple positioning rotary rings are regularly distributed on the conversion frame. Upper pressure heads of different specifications are installed at the bottom of each T-shaped pressure shaft, and lower die heads of matching specifications are set at the corresponding positions of the driven frame. The conversion frame is driven by the first linear transmission module to translate, and the upper pressure head and lower die head of the target specification can be quickly switched to align. At the same time, the follower spring forms a buffer limit for the T-shaped pressure shaft, and the synchronous pull column ensures the precise alignment of the upper and lower die heads.

[0009] 3. The present invention integrates a negative pressure material suction component and an intelligent material transfer module: the negative pressure main channel in the spinning shaft is connected to the negative pressure secondary channel of the T-shaped pressing shaft, and a vacuum pump is used to form a negative pressure to adsorb the parts to be riveted. The air pressure probe monitors the adsorption force in real time to prevent parts from falling off. The material transfer rack is driven by the second linear transmission module and cooperates with the quick clamp to realize the rapid clamping and precise transportation of the workpiece to be riveted. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a structural schematic diagram of a universal riveting tool of the present invention;

[0011] Figure 2 This is a structural diagram of the positioning slot and the second linear transmission module of the present invention;

[0012] Figure 3 It is a structural schematic diagram of the vibration adjustment frame and the conversion frame of the present invention;

[0013] Figure 4 For the present invention Figure 3 Schematic diagram of the local enlarged structure at A in the middle;

[0014] Figure 5 Schematic diagram of the structure of the first reciprocating screw and the first linear transmission module of the present invention;

[0015] Figure 6 This is a schematic structural diagram of the T-shaped pressure shaft and follower spring of the present invention;

[0016] Figure 7 It is a structural schematic diagram of the vibration riveting frame and the servo motor of the present invention;

[0017] Figure 8 For the present invention Figure 7 Schematic diagram of the local enlarged structure at B in the middle;

[0018] Figure 9 Schematic diagram of the structure of the first reciprocating screw and the elastic pressure relief member of the present invention;

[0019] Figure 10 For the present invention Figure 9 Schematic diagram of the locally enlarged structure at point C in the middle.

[0020] In the figure, 1 is the frame; 2 is the vibration adjustment frame; 3 is the vibration riveting frame; 4 is the spinning axis; 5 is the execution frame; 6 is the first linear transmission module; 7 is the conversion frame; 8 is the positioning rotary ring; 9 is the T-shaped pressure shaft; 10 is the follower spring; 11 is the upper pressure head; 12 is the driven frame; 13 is the synchronous pulling column; 14 is the electric heating rod; 15 is the lower die head; 16 is the exciter; 17 is the dual-axis driving platform; 18 is the microcontroller; 19 is the displacement sensor; 20 is the active pulling seat; 21 is the vertical vibration pressure frame; 22 is the servo motor; 23 is the hexagonal spindle ; 24. Hexagonal countershaft; 25. First reciprocating screw; 26. Elastic pressure-reducing member; 27. Second reciprocating screw; 28. Large sleeve shaft; 29. Small sleeve shaft; 30. Large-angle fan gear; 31. Small-angle fan gear; 32. Passive gear; 33. Energy storage torsion spring; 34. Longitudinal reciprocating frame; 35. Protective spring; 36. Axle; 37. Driven pressure plate; 38. Vacuum pump; 39. Material transfer rack; 40. Quick clamp; 41. Second linear transmission module; 42. Positioning slot; 43. Insert column; 44. Pressure push rod. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figures 1 to 10 As shown, the present invention provides a universal riveting tool and a riveting device, comprising a frame 1 and a vibration adjustment frame 2 capable of biaxial movement on the frame 1;

[0023] A dual-axis driving platform 17 and a microcontroller 18 are installed on the frame 1, and the dual-axis driving platform 17 is fixedly connected to the vibration adjustment frame 2;

[0024] An elastic reciprocating drive component is installed on the vibration adjustment frame 2, and a vibration riveting frame 3 and a rotatable spinning shaft 4 that can be synchronously moved up and down and left and right are driven and installed on the elastic reciprocating drive component. The spinning shaft 4 is rotatably mounted on the vibration riveting frame 3, and the up and down and left and right reciprocating frequency and reciprocating stroke of the vibration riveting frame 3 change periodically.

[0025] A displacement sensor 19 is installed on the vibration riveting frame 3, and the data end of the displacement sensor 19 is connected to the microcontroller 18;

[0026] The dual-axis drive platform 17 can drive the vibration adjustment frame 2 to move in two axes on the frame 1 to achieve precise adjustment of the riveting position. The microcontroller 18 can monitor and control the frequency and stroke of the vertical and horizontal reciprocating motion of the vibration adjustment frame 3 in real time by receiving the displacement data of the vibration adjustment frame 3 fed back by the displacement sensor 19, thereby meeting the diverse requirements of vibration frequency and stroke for different riveting processes.

[0027] The vibration frame 2 serves as the core motion carrier, and realizes two-dimensional movement of the X / Y axis through the dual-axis drive platform 17 on the frame 1, and works in conjunction with the displacement sensor 19 installed on the vibration riveting frame 3:

[0028] Before riveting, the microcontroller 18 adjusts the initial position of the vibration adjustment frame 2 through the dual-axis drive platform 17 according to the process parameters, so that the upper pressure head 11 is aligned with the riveting station;

[0029] During riveting, the displacement sensor 19 collects the displacement data of the vibration riveting frame 3 in real time and feeds it back to the microcontroller 18. If the actual displacement is detected to deviate from the preset parameters, the microcontroller 18 adjusts the speed of the servo motor 22 or the speed of the dual-axis drive platform 17 to correct the position of the vibration frame 2 or the output power of the drive components to ensure that the motion parameters meet the process requirements;

[0030] In addition, the displacement sensor 19 can also identify abnormal operating conditions, trigger shutdown protection to avoid equipment damage, and analyze the degree of wear of transmission components through long-term data comparison, providing a basis for preventive maintenance;

[0031] An execution frame 5 is provided below the vibration riveting frame 3, and a group of pressure push rods 44 are installed between the vibration riveting frame 3 and the execution frame 5. A first linear transmission module 6 is installed on the execution frame 5, and a conversion frame 7 is installed on the first linear transmission module 6. A plurality of regularly distributed positioning rotary rings 8 are rotatably installed on the conversion frame 7. The inner wall of each positioning rotary ring 8 is provided with a T-shaped pressure shaft 9, and the T-shaped pressure shaft 9 is provided with a follower spring 10 limited by the positioning rotary ring 8;

[0032] An upper pressing head 11 is installed at the bottom end of each T-shaped pressing shaft 9, a driven frame 12 is slidably installed on the frame 1 and at a position corresponding to the bottom of the conversion frame 7, a synchronous pulling column 13 is installed on the conversion frame 7 and is slidably connected to the driven frame 12, an electric heating rod 14 is installed on the driven frame 12 and at a position corresponding to each T-shaped pressing shaft 9, and a lower die head 15 is installed at the top of each electric heating rod 14, the specifications of the multiple upper pressing heads 11 and the multiple lower die heads 15 are different, the electric heating rod 14 and the T-shaped pressing shaft 9 are integrated with heating blocks, and an exciter 16 is installed on the driven frame 12;

[0033] The bottom end of the spinning shaft 4 is fixedly mounted with a transmission pressure plate, and the top end of each T-shaped pressure shaft 9 is provided with a driven pressure plate 37. The bottom surface of the transmission pressure plate and the top surface of the driven pressure plate 37 are fixedly provided with friction lines.

[0034] Before riveting, the first linear transmission module 6 can drive the conversion frame 7 to move according to the specifications of the parts to be riveted, so that the upper pressing heads 11 of different specifications are aligned with the positions of the spinning shaft 4, thereby adapting to different scenes or different specifications of riveting conditions;

[0035] The specifications of each upper pressing head 11 correspond to the specifications of the lower die head 15 at the corresponding position;

[0036] Moreover, the specifications and types of each upper pressing head 11 and each lower die head 15 can be customized according to actual needs, thereby meeting the universal requirements of the riveting tooling;

[0037] The follower spring 10 can buffer and limit the T-shaped pressing shaft 9 to avoid damage to parts due to excessive pressure during the riveting process. The synchronous pull column 13 links the conversion frame 7 with the driven frame 12. When the conversion frame 7 moves, the driven frame 12 slides accordingly to ensure that the upper pressure head 11 and the lower die head 15 are accurately aligned.

[0038] The electric heating rod 14 and the heating block on the T-shaped pressing shaft 9 can preheat or heat the riveted parts to reduce the hardness of the material and improve the efficiency and quality of the riveting. The vibrator 16 can generate vibration to assist the riveting process and make the parts more tightly combined.

[0039] When the spinning shaft 4 is driven to rotate by the elastic synchronous toothed belt, the driving pressure plate at its bottom and the driven pressure plate 37 at the top of the T-shaped pressure shaft 9 are in close contact through the friction grooves, which can stably transmit the rotational torque to the T-shaped pressure shaft 9, driving the upper pressure head 11 to rotate synchronously. During the working process, when the spinning shaft 4 is driven up and down by the elastic reciprocating drive component, the driving pressure plate and the driven pressure plate 37 always maintain surface contact. The friction grooves prevent slippage and ensure that the upper pressure head 11 continues to rotate during the riveting process, making the contact stress distribution between the rivet and the workpiece more uniform.

[0040] The elastic reciprocating drive component includes an active pull seat 20, a vertical vibration pressure frame 21, a servo motor 22 mounted on the vibration adjustment frame 2, a hexagonal main shaft 23 rotatably connected to the vibration adjustment frame 2, a hexagonal secondary shaft 24 and a first reciprocating screw rod 25;

[0041] The active pull seat 20 and the vertical vibration pressure frame 21 are both slidably connected to the vibration adjustment frame 2, and an elastic pressure buffer 26 is installed between the active pull seat 20 and the vertical vibration pressure frame 21;

[0042] The elastic pressure-relief member 26 includes two T-shaped pull rods mounted on the vertical vibration pressure frame 21. Both T-shaped pull rods are slidably connected to the vertical vibration pressure frame 21. Pressure-relief springs are sleeved on the two T-shaped pull rods at positions corresponding to the upper portion of the vertical vibration pressure frame 21 and are limited by the vertical vibration pressure frame 21.

[0043] During the operation of the elastic reciprocating drive component, the elastic pressure buffer 26 can buffer the impact force between the active pull seat 20 and the vertical vibration pressure frame 21, reducing vibration and noise. At the same time, it stores and releases energy through the elastic deformation of the spring, making the movement smoother.

[0044] At the same time, the provision of the elastic pressure buffer 26 can prevent the vertical vibration pressure frame 21 from overloading the riveting material when it moves vertically;

[0045] The output shaft end of the servo motor 22 is fixedly connected to the hexagonal main shaft 23. The second reciprocating screw 27, the large sleeve shaft 28 and the small sleeve shaft 29 are rotatably mounted on the vertical vibration and pressure frame 21. The large sleeve shaft 28 is driven by the hexagonal main shaft 23.

[0046] An elastic synchronous toothed belt is installed between the large sleeve shaft 28 and the spinning shaft 4, and the hexagonal countershaft 24 is driven by the small sleeve shaft 29;

[0047] The large sleeve shaft 28 is fixedly provided with a first hexagonal groove with both ends open and slidingly connected to the hexagonal main shaft 23. The small sleeve shaft 29 is fixedly provided with a second hexagonal groove with both ends open and slidingly connected to the hexagonal secondary shaft 24. The cross-sections of the hexagonal main shaft 23, the hexagonal secondary shaft 24, the first hexagonal groove, and the second hexagonal groove are all regular hexagons.

[0048] A large-angle sector gear 30 and a small-angle sector gear 31 are mounted on the large sleeve shaft 28. Two symmetrically arranged energy storage and reset areas are provided on the large sleeve shaft 28 at positions corresponding to the large-angle sector gear 30 and the small-angle sector gear 31. Two driven gears 32 are mounted on the small sleeve shaft 29. The two driven gears 32 are meshed with the large-angle sector gear 30 and the small-angle sector gear 31, respectively.

[0049] The central angle corresponding to the large-angle sector gear 30 is 180°, the central angle corresponding to the small-angle sector gear 31 is 120°, and the central angles corresponding to the two energy storage reset areas are both 30°. The radius of the large-angle sector gear 30 and the small-angle sector gear 31 are the same, and the radius of the two driven gears 32 are the same. The radius of the large-angle sector gear 30 is 8 times the radius of the driven gear 32;

[0050] The first reciprocating screw rod 25 and the second reciprocating screw rod 27 are both driven by the small sleeve shaft 29;

[0051] A first belt is connected between the hexagonal secondary shaft 24 and the first reciprocating screw 25. A wheel shaft 36 is rotatably mounted on the vertical vibration and pressure frame 21. A second belt is connected between the wheel shaft 36 and the small sleeve shaft 29. Bevel gears are installed on both the wheel shaft 36 and the second reciprocating screw 27.

[0052] Energy storage torsion springs 33 are provided at the rotational connection between the first reciprocating screw 25 and the vibration adjustment frame 2, and at the rotational connection between the second reciprocating screw 27 and the vertical vibration pressure frame 21. A longitudinal reciprocating frame 34 is installed on the second reciprocating screw 27. The vibration riveting frame 3 is slidably connected to the longitudinal reciprocating frame 34. A protective spring 35 is installed on the side of the vibration riveting frame 3 and is limited by the longitudinal reciprocating frame 34.

[0053] The servo motor 22 drives the hexagonal main shaft 23 to rotate, and drives the large sleeve shaft 28 to rotate synchronously through the first hexagonal groove. The large sleeve shaft 28 can slide axially along the hexagonal main shaft 23 to maintain torque transmission. The large-angle fan gear 30 and the small-angle fan gear 31 on the large sleeve shaft 28 rotate with it and respectively engage with the driven gear 32 on the small sleeve shaft 29. When the large-angle fan gear 30 engages with the driven gear 32, the driven gear 32 is driven at high speed and transmitted to the second reciprocating screw 27 through the second belt, the wheel shaft 36 and the bevel gear, driving the longitudinal reciprocating frame 34 to reciprocate at high speed and short stroke;

[0054] When the small angle sector gear 31 is meshed with the driven gear 32, the speed of the driven gear 32 is reduced, and the second reciprocating screw 27 drives the longitudinal reciprocating frame 34 to reciprocate at a low speed and a long stroke;

[0055] When the large sleeve shaft 28 rotates to the energy storage reset zone, the large angle sector gear 30, the small angle sector gear 31 and the driven gear 32 are disengaged, and the energy storage torsion spring 33 releases elastic potential energy to drive the driven gear 32 and the screw rod to reset in the opposite direction, completing the cycle;

[0056] At the same time, the first reciprocating screw 25 synchronously controls the left and right reciprocating motion of the vibrating riveting frame 3. The speed change logic is consistent with that of the second reciprocating screw 27, ultimately achieving periodic changes in the up and down, left and right reciprocating frequency and stroke of the vibrating riveting frame 3. This design adapts to multi-stage riveting requirements through dynamic parameter adjustment.

[0057] The high-speed, short-stroke stage can quickly complete the pre-contact between the rivet and the workpiece, reducing the time spent on idle travel. The low-speed, long-stroke stage prolongs the pressing time, allowing the rivet and the workpiece material to fully plastically deform and bond more tightly. During the reset stage, the energy storage torsion spring 33 compensates for energy loss, avoiding movement lag due to inertia and ensuring smooth transitions between each stage.

[0058] Traditional riveting devices have fixed frequency and stroke, which can easily lead to offset due to insufficient pre-pressing or weak bonding force due to insufficient precision pressing time.

[0059] The above parameters are dynamically adjusted to suit the deformation law of the bonding material, reducing the risk of crushing or loose riveting, enhancing the versatility of the tooling and extending the life of the equipment;

[0060] The protection spring 35 is installed between the vibrating riveting frame 3 and the longitudinal reciprocating frame 34. When the vibrating riveting frame 3 is driven by the first reciprocating screw 25 to make a left and right reciprocating motion, if a sudden load change such as rivet jamming or high-speed motion inertia causes a rigid collision with the longitudinal reciprocating frame 34, the protection spring 35 absorbs the instantaneous impact energy by compression or tension, thereby preventing the sliding rails, connecting bolts and other components of the vibrating riveting frame 3 from being deformed or broken due to overload.

[0061] The pressure relief spring is installed between the active pull seat 20 and the vertical vibration pressure frame 21 through a T-shaped pull rod. When the servo motor 22 drives the active pull seat 20 to perform periodic reciprocating motion, the vertical vibration pressure frame 21 generates an instantaneous acceleration mutation due to the variable speed transmission of the elastic reciprocating drive component. The pressure relief spring absorbs the impact energy between the two by compression or rebound, preventing the gear meshing surface from being worn or broken due to instantaneous overload, while reducing the operating noise of the equipment.

[0062] A negative pressure material suction component is provided in the spinning shaft 4.

[0063] The negative pressure material suction component includes a vacuum pump 38 installed on the vibration adjustment frame 2 and a negative pressure main channel opened in the spinning shaft 4. The bottom end of the negative pressure main channel is open, and the negative pressure end of the vacuum pump 38 is connected to the negative pressure main channel through a vacuum tube. An air pressure probe electrically connected to the microcontroller 18 is installed on the vacuum tube. A negative pressure secondary channel is fixedly opened inside the T-shaped pressure shaft 9 and is adapted to be connected to the negative pressure main channel. The bottom end of the negative pressure secondary channel is connected to the inner cavity of the upper pressure head 11.

[0064] The vacuum pump 38 is connected to the negative pressure main channel in the spinning shaft 4 through a vacuum tube, forming a negative pressure in the negative pressure main channel and the negative pressure secondary channel, adsorbing the parts to be riveted into the inner cavity of the upper pressure head 11, and realizing automatic material suction. The air pressure probe is electrically connected to the microcontroller 18, which can monitor the air pressure in the vacuum tube in real time to ensure the stability of the negative pressure adsorption force and prevent the parts from falling off. The negative pressure material suction component realizes the automatic grasping and positioning of the parts, improves the automation and efficiency of the riveting operation, reduces manual operation, and reduces labor intensity.

[0065] It also includes a material moving rack 39, multiple quick clamps 40 and a second linear transmission module 41 installed on the frame 1. The second linear transmission module 41 is connected to the material moving rack 39 for transmission. A group of positioning slots 42 are opened on the material moving rack 39. The bottom surface of each quick clamp 40 is installed with a plug-in column 43 that is adapted to the positioning slot 42.

[0066] The second linear transmission module 41 drives the material transfer rack 39 to move, and can accurately transport the parts placed on the quick clamp 40 to the riveting position. The quick clamp 40 cooperates with the positioning slot 42 on the material transfer rack 39 through the plug-in column 43 on the bottom surface to achieve quick installation and positioning, and facilitates the replacement of clamps of different specifications to meet the clamping requirements of different parts. The setting of the material transfer rack 39 and the quick clamp 40 improves the clamping and conveying efficiency of the parts to be riveted, reduces auxiliary time, and improves overall production efficiency.

[0067] A universal riveting device is provided, using any one of the universal riveting tools mentioned above.

[0068] The working principle and use process of the present invention:

[0069] During operation, the second linear transmission module 41 first drives the material transfer rack 39 to transport the parts clamped in the quick clamp 40 to the riveting station. The first linear transmission module 6 drives the conversion rack 7 to switch the upper pressure head 11 of the adapted specifications and align it with the lower die head 15. The dual-axis drive platform 17 adjusts the position of the vibration adjustment rack 2 to complete the initial positioning.

[0070] Subsequently, the vacuum pump 38 absorbs the parts to be riveted through the negative pressure main channel in the spinning shaft 4 and the negative pressure secondary channel of the T-shaped pressing shaft 9, the heating block preheats the riveted parts, and the vibrator 16 starts auxiliary vibration;

[0071] During riveting, the servo motor 22 drives the hexagonal spindle 23 to rotate, and the large-angle fan gear 30 and the small-angle fan gear 31 on the large sleeve shaft 28 alternately mesh with the driven gear 32 of the small sleeve shaft 29, and cooperate with the energy storage torsion spring 33 to realize the periodic movement of high-speed short-stroke pre-pressing, low-speed long-stroke precision pressing and energy storage reset of the vibration riveting frame 3. At the same time, the spinning shaft 4 drives the upper pressure head 11 to rotate through the friction lines between the transmission pressure plate and the driven pressure plate 37 to optimize the stress distribution;

[0072] During the riveting process, the displacement sensor 19 feeds back the displacement data of the vibration riveting frame 3 to the microcontroller 18 in real time, dynamically adjusts the motion parameters or triggers protection; after the riveting is completed, the vacuum pump 38 stops adsorption, and the material transfer rack 39 moves out the finished workpiece and enters the next cycle. This process achieves efficient, accurate and universal riveting operations through dynamic parameter adjustment, multi-specification mold adaptation and automatic material suction and transfer.

[0073] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0074] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A universal riveting tool, comprising a frame (1) and a vibration adjustment frame (2) capable of biaxial movement on the frame (1), characterized in that: The vibration adjustment frame (2) is provided with an elastic reciprocating driving component, and the elastic reciprocating driving component is provided with a vibration riveting frame (3) and a rotatable spinning shaft (4) that can be synchronously moved up and down and left and right. The spinning shaft (4) is rotatably installed on the vibration riveting frame (3), and the up and down and left and right reciprocating frequency and reciprocating stroke of the vibration riveting frame (3) are periodically changed. An execution frame (5) is provided below the vibration riveting frame (3), and a group of pressure push rods (44) are installed between the vibration riveting frame (3) and the execution frame (5). A first linear transmission module (6) is provided on the execution frame (5), and a conversion frame (7) is provided on the first linear transmission module (6). A plurality of regularly distributed positioning rotary rings (8) are rotatably installed on the conversion frame (7), and the inner wall of each positioning rotary ring (8) is provided with a T-shaped pressing shaft (9). The T-shaped pressing shaft (9) is provided with a follower spring (10) which is limited by a positioning ring (8), an upper pressure head (11) is installed at the bottom end of each T-shaped pressure shaft (9), a driven frame (12) is slidably installed on the frame (1) and at a position corresponding to the position below the conversion frame (7), a synchronous pulling column (13) which is slidably connected to the driven frame (12) is installed on the conversion frame (7), an electric heating rod (14) is installed on the driven frame (12) and at a position corresponding to each T-shaped pressure shaft (9), a lower die head (15) is installed at the top of each electric heating rod (14), the specifications of the multiple upper pressure heads (11) and the multiple lower die heads (15) are different, the electric heating rod (14) and the T-shaped pressure shaft (9) are integrated with heating blocks, an exciter (16) is installed on the driven frame (12), and a negative pressure suction component is provided in the spinning shaft (4); The elastic reciprocating drive component includes an active pull seat (20), a vertical vibration pressure frame (21), a servo motor (22) installed on the vibration adjustment frame (2), a hexagonal main shaft (23) rotatably connected to the vibration adjustment frame (2), a hexagonal secondary shaft (24) and a first reciprocating screw (25), the active pull seat (20) and the vertical vibration pressure frame (21) are both slidably connected to the vibration adjustment frame (2), and an elastic pressure buffer (26) is installed between the active pull seat (20) and the vertical vibration pressure frame (21). The output shaft end of the servo motor (22) is fixedly connected to the hexagonal main shaft (23), and the second reciprocating screw (27), the large sleeve shaft (28) and the small sleeve shaft (29) are rotatably installed on the vertical vibration and pressure frame (21). The large sleeve shaft (28) is driven by the hexagonal main shaft (23). An elastic synchronous toothed belt is installed between the large sleeve shaft (28) and the spinning shaft (4). The hexagonal secondary shaft (24) is driven by the small sleeve shaft (29). The large sleeve shaft (28) is respectively installed with The large-angle fan gear (30) and the small-angle fan gear (31) are provided on the large sleeve shaft (28), and two symmetrically arranged energy storage reset areas are provided at positions corresponding to the large-angle fan gear (30) and the small-angle fan gear (31). Two passive gears (32) are installed on the small sleeve shaft (29), and the two passive gears (32) are respectively meshed with the large-angle fan gear (30) and the small-angle fan gear (31). The first reciprocating screw rod (25) and the second reciprocating screw rod (27) are both connected by a small The sleeve shaft (29) is driven, and the rotation connection between the first reciprocating screw (25) and the vibration adjustment frame (2) and the rotation connection between the second reciprocating screw (27) and the vertical vibration pressure frame (21) are both provided with energy storage torsion springs (33). The second reciprocating screw (27) is transmission-mounted with a longitudinal reciprocating frame (34), and the vibration riveting frame (3) is slidably connected to the longitudinal reciprocating frame (34). The side of the vibration riveting frame (3) is provided with a protective spring (35) limited by the longitudinal reciprocating frame (34).

2. The universal riveting tool according to claim 1, characterized in that: A dual-axis drive platform (17) and a microcontroller (18) are installed on the frame (1), the dual-axis drive platform (17) is fixedly connected to the vibration adjustment frame (2), a displacement sensor (19) is installed on the vibration riveting frame (3), and a data end of the displacement sensor (19) is data-connected to the microcontroller (18).

3. The universal riveting tool according to claim 1, characterized in that: The central angle corresponding to the large-angle fan gear (30) is 180°, the central angle corresponding to the small-angle fan gear (31) is 120°, and the central angles corresponding to the two energy storage reset areas are both 30°. The large-angle fan gear (30) and the small-angle fan gear (31) have the same radius, and the two passive gears (32) have the same radius. The radius of the large-angle fan gear (30) is 7 to 10 times the radius of the passive gear (32).

4. The universal riveting tool according to claim 1, characterized in that: The large sleeve shaft (28) is fixedly provided with a first hexagonal groove with openings at both ends and slidably connected to the hexagonal main shaft (23). The small sleeve shaft (29) is fixedly provided with a second hexagonal groove with openings at both ends and slidably connected to the hexagonal secondary shaft (24). The cross-sections of the hexagonal main shaft (23), the hexagonal secondary shaft (24), the first hexagonal groove and the second hexagonal groove are all regular hexagons. A first belt is connected to the hexagonal secondary shaft (24) and the first reciprocating screw rod (25). A wheel shaft (36) is rotatably installed on the vertical vibration pressure frame (21). A second belt is connected to the wheel shaft (36) and the small sleeve shaft (29). Bevel gears are installed on both the wheel shaft (36) and the second reciprocating screw rod (27).

5. The universal riveting tool according to claim 1, characterized in that: The elastic pressure-relief member (26) includes two T-shaped pull rods mounted on the vertical vibration pressure frame (21), and the two T-shaped pull rods are both slidably connected to the vertical vibration pressure frame (21). The two T-shaped pull rods are respectively provided with pressure-relief springs limited by the vertical vibration pressure frame (21) at positions above the vertical vibration pressure frame (21).

6. The universal riveting tool according to claim 1, characterized in that: A transmission pressure plate is fixedly mounted on the bottom end of the spinning shaft (4), and a driven pressure plate (37) is provided on the top end of each T-shaped pressure shaft (9). Friction lines are fixedly provided on the bottom surface of the transmission pressure plate and the top surface of the driven pressure plate (37).

7. The universal riveting tool according to claim 1, characterized in that: The negative pressure material suction component includes a vacuum pump (38) installed on the vibration adjustment frame (2) and a negative pressure main channel opened in the spinning shaft (4), the bottom end of the negative pressure main channel is open, the negative pressure end of the vacuum pump (38) is connected to the negative pressure main channel through a vacuum tube, and an air pressure probe electrically connected to the microcontroller (18) is installed on the vacuum tube. A negative pressure secondary channel adapted to be connected to the negative pressure main channel is fixedly opened inside the T-shaped pressure shaft (9), and the bottom end of the negative pressure secondary channel is connected to the inner cavity of the upper pressure head (11).

8. The universal riveting tool according to claim 1, characterized in that: The machine also includes a material transfer rack (39), a plurality of quick clamps (40) and a second linear transmission module (41) mounted on the frame (1), wherein the second linear transmission module (41) is in transmission connection with the material transfer rack (39), a group of positioning slots (42) are provided on the material transfer rack (39), and a plug post (43) adapted to the positioning slot (42) is installed on the bottom surface of each quick clamp (40).

9. A universal riveting device, characterized in that: A universal riveting tool as described in any one of claims 1 to 8.

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