Horizontal synchronous riveting damping rotating shaft device

Abstract

This invention belongs to the field of automotive parts assembly technology and provides a horizontal synchronous riveting device for damping shafts. The device includes: a tooling table with an inner limiting block located at the center; positioning grooves on both sides of the inner limiting block for positioning the fixing pads to be assembled; and a riveting mechanism with a pair of pneumatic-hydraulic booster cylinders on the tooling table. Compared with existing technologies, the advantages of this invention are that the inner limiting block, riveting mechanism, rear positioning mechanism, washer positioning mechanism, and front positioning mechanism on the tooling table ensure precise alignment of the parts to be assembled. The device employs double-head synchronous riveting, effectively improving work efficiency, reducing the risk of workpiece deformation, and ensuring the riveting accuracy and consistency of the damping shaft and connecting piece, thus effectively improving the production efficiency and product quality of automotive parts manufacturing.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts assembly technology, specifically relating to a device for horizontal synchronous riveting of damping shafts. Background Technology

[0002] In the design and manufacturing of automotive seats, to enhance passenger experience, key components such as armrest hinge brackets often need to have a flip-up function, exhibiting an ideal hovering effect and a delicate damping feel during the flipping process. Therefore, the industry generally prefers to use independent precision damping structures to achieve this goal. However, due to the precision-fitting characteristics of these damping flip-up structures, the manufacturing accuracy requirements are stringent, leading to challenges in the actual production yield. Especially in the interference fit between the damping friction plate and the damping shaft, extrusion riveting processes are usually required to ensure a tight bond between the two.

[0003] Current riveting equipment on the market generally adopts a single-head riveting method, requiring two independent extrusion operations on the damping shaft. This not only significantly reduces work efficiency, but also requires ensuring high-precision concentricity on both sides of the workpiece during each riveting process; otherwise, uneven stress on the workpiece will occur, increasing the potential risks caused by deformation. Furthermore, existing tooling equipment lacks sufficiently precise positioning solutions, making it difficult to ensure that the workpiece maintains perfect symmetry and balance during riveting, thus affecting the riveting consistency of the damping shafts on both sides. Therefore, a horizontal synchronous double-head riveting device is designed to improve riveting quality and production efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a device for horizontal synchronous riveting damping shaft with high concentricity and good stability, in light of the current state of the prior art.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a device for horizontal synchronous riveting damping shaft is proposed, comprising: a tooling table, an inner limiting block is provided on the tooling table, the inner limiting block is located at the center of the tooling table, and positioning contour grooves are provided on both sides of the inner limiting block, the positioning contour grooves are used to position the fixing pad to be assembled. The riveting mechanism has a pair of pneumatic-hydraulic booster cylinders, which are located on the tooling table and are symmetrically arranged along the inner limit block. Each pneumatic-hydraulic booster cylinder is connected to a riveting joint, and the axes of the riveting joints on both sides are collinear. The rear positioning mechanism has a first positioning seat and a pair of first auxiliary positioning blocks. The first positioning seat is disposed on the tooling table, and the pair of first auxiliary positioning blocks are respectively located on both sides of the inner limiting block. The first positioning seat is used to position the lower fixed base to be processed, and the pair of first auxiliary positioning blocks are used to position the riveting hole of the lower fixed base. A washer positioning mechanism has a pair of washer auxiliary positioning blocks, which are respectively connected to both sides of the inner limiting block, and the first auxiliary positioning block is located between the washer auxiliary positioning block and the positioning contour groove. The washer auxiliary positioning block is used to position the limiting piece to be processed. The front positioning mechanism has a second positioning seat and a pair of second auxiliary positioning blocks. The second positioning seat is disposed on the tooling table and located at the end of the inner limiting block away from the first positioning seat. The pair of second auxiliary positioning blocks are respectively slidably disposed on both sides of the inner limiting block along the axial direction of the rivet joint, and each second auxiliary positioning block is located between the corresponding side of the gas-hydraulic booster cylinder and the washer auxiliary positioning block. The second positioning seat is used to position the upper cover plate to be processed, and the pair of second auxiliary positioning blocks are used to position the damping shafts pre-installed on the damping connecting plates on both sides of the upper cover plate.

[0006] In the above-mentioned horizontal synchronous riveting damping shaft device, a groove is provided in the middle of the inner limiting block, and retractable positioning pins are inserted on both sides of the inner limiting block. The positioning pins are collinear with the axis of the riveting joint, and the positioning pins can extend from the side of the inner limiting block to the corresponding position of the positioning contour groove, so that the positioning pins move against the damping shaft.

[0007] In the above-mentioned device for horizontal synchronous riveting damping shaft, a first elastic element is provided on the inner limiting block. The first elastic element is located in the groove. A limiting part is provided at the end of the positioning pin near the groove. The two ends of the first elastic element are respectively connected to the limiting parts of the positioning pins on both sides that are close to each other.

[0008] In the above-mentioned horizontal synchronous riveting damping shaft device, the left and right sides of the inner limiting block are provided with track grooves and handles, and the handles on each side pass through the track grooves on the corresponding side and are connected to the positioning pins on the corresponding side.

[0009] In the above-mentioned device for horizontal synchronous riveting damping shaft, a first error-proof detection pin is provided on the first positioning seat, and a first error-proof hole is provided on the lower fixed base, with the first error-proof detection pin connected to the first error-proof hole; a second error-proof detection pin is provided on the second positioning seat, and a second error-proof hole is provided on the lower fixed base, with the second error-proof detection pin connected to the second error-proof hole.

[0010] In the aforementioned device for horizontal synchronous riveting damping shafts, the front positioning mechanism has a clamping assembly, which includes a clamping cylinder, a support base, a hinge component, and a clamping block. The clamping cylinder is mounted on the tooling table, one end of which is rotatably connected to the clamping block. The support base is mounted on the clamping cylinder, one end of which is hinged to the support base, and the other end of which is hinged to the clamping block. The clamping block is used to clamp the upper cover plate located on the second positioning seat.

[0011] In the above-mentioned device for horizontal synchronous riveting damping shaft, the front positioning mechanism has a bracket auxiliary pad, which is located on the side of the second positioning seat and is used to support the upper cover plate.

[0012] In the above-mentioned horizontal synchronous riveting damping shaft device, the riveting mechanism has a pair of limiting slider seats, which are fixed on the tooling table and located on both sides of the inner limiting block. The limiting slider seats are provided with a first guide hole and a second guide hole. The riveting head movably passes through the first guide hole. One end of the second auxiliary positioning block is provided with a second elastic element, which is connected to the washer auxiliary positioning block. The other end of the second auxiliary positioning block is slidably connected to the second guide hole.

[0013] In the above-mentioned device for horizontal synchronous riveting damping shaft, a sensing element is provided on the riveting mechanism. The sensing element is located on the end side of the limiting slider seat away from the inner limiting block. A connecting shaft is provided on the drive end of the gas-liquid booster cylinder. The end of the riveting head away from the inner limiting block is detachably connected to the connecting shaft. The connecting shaft movably abuts against the limiting slider seat.

[0014] In the above-mentioned device for horizontal synchronous riveting damping shaft, a support frame and an electrical control box are provided at the lower end of the tooling table. The electrical control box is located in the support frame, which supports the tooling table, and the electrical control box is used to control the riveting mechanism and the front positioning mechanism.

[0015] Compared with the prior art, the advantages of the present invention are that the inner limiting block, riveting mechanism, rear positioning mechanism, washer positioning mechanism and front positioning mechanism on the tooling table ensure the precise alignment of the parts to be assembled. The device adopts double-head synchronous riveting, which effectively improves work efficiency, reduces the risk of workpiece deformation, and ensures the riveting accuracy and consistency of the damping shaft and connecting piece, thus effectively improving the production efficiency and product quality of automotive parts manufacturing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the horizontal synchronous riveting damping shaft device; Figure 2 This is a schematic diagram of the structure of the device and product for horizontal synchronous riveting damping shaft; Figure 3 yes Figure 2 Enlarged view of section AA; Figure 4 This is a schematic diagram of the inner limit block; Figure 5 This is a structural diagram of the tooling table and riveting mechanism; Figure 6 This is a structural diagram of the tooling table, rear positioning mechanism, washer positioning mechanism, and front positioning mechanism; Figure 7 This is a schematic diagram of the product structure after riveting.

[0017] In the picture: 1. Tooling table; 100. Inner limit block; 101. Positioning contour groove; 102. Groove; 103. Positioning pin; 104. First elastic element; 105. Track groove; 106. Handle; 107. Support frame; 108. Electrical control box; 2. Riveting mechanism; 200. Pneumatic-hydraulic booster cylinder; 201. Riveting joint; 202. Limiting slider seat; 203. First guide hole; 204. Second guide hole; 205. Sensing element; 206. Connecting shaft; 207. Protective cover; 3. Rear positioning mechanism; 300. First positioning seat; 301. First auxiliary positioning block; 302. First error-proofing detection pin; 4. Washer positioning mechanism; 400. Washer auxiliary positioning block; 5. Front positioning mechanism; 500. Second positioning seat; 501. Second auxiliary positioning block; 502. Second error-proof detection pin; 503. Pressing cylinder; 504. Support seat; 505. Hinge component; 506. Pressing block; 507. Bracket auxiliary pad; 508. Second elastic component; 6. Fixing pad; 7. Lower fixing base; 8. Limiting plate; 9. Upper cover plate; 10. Damping connecting plate; 11. Damping rotating shaft. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figures 1 to 7 As shown, a horizontal synchronous riveting device for a damping shaft 11 includes a tooling table 1, on which an inner limiting block 100 is provided. The inner limiting block 100 is located at the center of the tooling table 1, and positioning contour grooves 101 are provided on both side walls of the inner limiting block 100 for positioning the fixing pad 6 to be assembled; a riveting mechanism 2, which has a pair of pneumatic-hydraulic booster cylinders 200. The pair of pneumatic-hydraulic booster cylinders 200 are on the tooling table 1 and are symmetrically arranged along the inner limiting block 100. Each pneumatic-hydraulic booster cylinder 200... The hydraulic booster cylinder 200 is equipped with a riveting joint 201, and the axes of the riveting joints 201 on both sides are collinear; the rear positioning mechanism 3 has a first positioning seat 300 and a pair of first auxiliary positioning blocks 301. The first positioning seat 300 is set on the tooling table 1, and the pair of first auxiliary positioning blocks 301 are respectively located on both sides of the inner limit block 100. The first positioning seat 300 is used to position the lower fixed base 7 to be processed, and the pair of first auxiliary positioning blocks 301 are used to position the riveting hole of the lower fixed base 7; gasket positioning. Positioning mechanism 4, the washer positioning mechanism 4 has a pair of washer auxiliary positioning blocks 400, the pair of washer auxiliary positioning blocks 400 are respectively connected to both sides of the inner limiting block 100, and the first auxiliary positioning block 301 is located between the washer auxiliary positioning block 400 and the positioning contour groove 101. The washer auxiliary positioning block 400 is used to position the limiting piece 8 to be processed; front positioning mechanism 5, the front positioning mechanism 5 has a second positioning seat 500 and a pair of second auxiliary positioning blocks 501, the second positioning seat 500 is set on the tooling table 1 and located at The inner limit block 100 is located away from the first positioning seat 300. A pair of second auxiliary positioning blocks 501 are slidably mounted on the tooling table 1 along the axial direction of the rivet joint 201. The pair of second auxiliary positioning blocks 501 are respectively located on both sides of the inner limit block 100 and are positioned between the pneumatic-hydraulic booster cylinder 200 and the washer auxiliary positioning block 400. The second positioning seat 500 is used to position the upper cover plate 9 to be processed. The pair of second auxiliary positioning blocks 501 are used to position the damping shaft 11 on both sides of the upper cover plate 9, which has damping connecting pieces 10 inserted therethrough.

[0020] An inner limiting block 100 is installed at the center of the tooling table 1. The two side walls of the inner limiting block 100 are designed with positioning contour grooves 101, which are mainly used to accurately position the fixing pad 6 to be assembled, ensuring that its position is accurate during the subsequent riveting process. The riveting mechanism 2 of the device is equipped with a pair of pneumatic-hydraulic booster cylinders 200. The pair of pneumatic-hydraulic booster cylinders 200 are symmetrically installed on the tooling table 1, and their axes are distributed along the axis of symmetry of the inner limiting block 100. Each is equipped with a riveting joint 201. The axes of the two riveting joints 201 are always kept on the same straight line. The rear positioning mechanism 3 is mainly composed of a first positioning seat 300 and a pair of first auxiliary positioning blocks 301. The first positioning seat 300 is fixed on the tooling table 1, and the pair of first auxiliary positioning blocks 301 are respectively placed on both sides of the inner limiting block 100. The function of the first positioning seat 300 and the pair of first auxiliary positioning blocks 301 is to perform overall positioning of the lower fixed base 7 to be processed, and to precisely align the riveting holes on the lower fixed base 7. In addition, there is a washer positioning mechanism 4, which includes a pair of washer auxiliary positioning blocks 400, which are respectively connected to both sides of the inner limit block 100. The washer auxiliary positioning blocks 400 are connected to the inner limit block 100 by screws, so that the first auxiliary positioning block 301 is exactly located between the washer auxiliary positioning block 400 and the positioning contour groove 101. The main task of the washer auxiliary positioning block 400 is to position the limit piece 8 to be processed. The front positioning mechanism 5 is provided with a second positioning seat 500 and a pair of second auxiliary positioning blocks 501. The second positioning seat 500 is located at the far end of the limiting block 100 inside the tooling table 1. The second auxiliary positioning blocks 501 can slide along the tooling table 1 in the axial direction of the rivet joint 201. They are located between the pneumatic-hydraulic booster cylinder 200 and the washer auxiliary positioning block 400, respectively. The second positioning seat 500 is mainly used to position the upper cover plate 9 to be processed, while the second auxiliary positioning blocks 501 are responsible for accurately positioning the damping shaft 11 on both sides of the upper cover plate 9, which has been inserted with damping connecting pieces 10.

[0021] It should be noted that the fixing gasket 6 is a metal gasket, while the limiting piece 8 is a limiting piece made of plastic.

[0022] Specifically, such as Figures 1 to 5 As shown, a groove 102 is provided in the middle of the inner limiting block 100, and retractable positioning pins 103 are provided on both sides of the inner limiting block 100. The positioning pins 103 are collinear with the axis of the rivet joint 201, and the positioning pins 103 move against the damping shaft 11.

[0023] The inner limit block 100 has a groove 102 in the middle part, and retractable positioning pins 103 are cleverly inserted on both sides. It is worth mentioning that the axis of these positioning pins 103 is strictly collinear with the axis of the riveting joint 201. In actual operation, the positioning pins 103 can move against the damping shaft 11, thereby ensuring the accurate position of the damping shaft 11 during the riveting process.

[0024] Furthermore, such as Figures 3 to 5 As shown, the inner limiting block 100 is provided with a first elastic member 104, and the end of the positioning pin 103 near the groove 102 is provided with a limiting part. The first elastic member 104 is located in the groove 102, and the two ends of the first elastic member 104 are respectively connected to the limiting parts of the positioning pins 103 on both sides that are close to each other.

[0025] The inner limiting block 100 is also equipped with a first elastic element 104, which is located inside the groove 102. A limiting part is provided near the end of the groove 102 where the positioning pin 103 is located. The limiting part moves against the groove wall of the groove 102. The two ends of the first elastic element 104 are tightly connected to the limiting parts on the two side positioning pins 103 respectively. This design helps to provide a flexible and stable positioning effect during riveting. The limiting part is provided to prevent the positioning pin 103 from disengaging from the inner limiting block 100 due to the elastic force of the first elastic element 104.

[0026] Furthermore, such as Figures 2 to 5 As shown, the inner limit block 100 is provided with a track groove 105 and a handle 106 on the left and right sides. The handle 106 on each side passes through the track groove 105 on the corresponding side and is connected to the positioning pin 103 on the corresponding side.

[0027] To facilitate the operator in adjusting the position of the positioning pin 103, the inner limit block 100 is also provided with a track groove 105 and a handle 106 on both sides. The handle 106 on each side passes through the corresponding track groove 105 and is connected to the positioning pin 103 on that side. The operator can adjust the positioning pin 103 to extend and retract on the inner limit block 100 by moving the handle 106 in the track groove 105.

[0028] Specifically, such as Figure 1 and Figure 2 As shown, a first error-proofing detection pin 302 is provided on the first positioning base 300, and a first error-proofing hole is provided on the lower fixed base 7. The first error-proofing detection pin 302 is connected to the first error-proofing hole. A second error-proofing detection pin 502 is provided on the second positioning base 500, and a second error-proofing hole is provided on the lower fixed base 7. The second error-proofing detection pin 502 is connected to the second error-proofing hole.

[0029] The first positioning base 300 is equipped with a first error-proofing detection pin 302, and the lower fixed base 7 to be processed has a pre-drilled first error-proofing hole that matches it. The connection between the first error-proofing detection pin 302 and the first error-proofing hole prevents assembly errors. Similarly, the second positioning base 500 also has a second error-proofing detection pin 502, which is connected to the second error-proofing hole on the lower fixed base 7. This dual error-proofing design ensures the accuracy of workpiece assembly and the smooth progress of the riveting process.

[0030] Specifically, such as Figure 2 and Figure 6 As shown, the front positioning mechanism 5 has a clamping assembly, which includes a clamping cylinder 503, a support base 504, a hinge 505, and a clamping block 506. The clamping cylinder 503 is mounted on the tooling table 1, and one end of the clamping cylinder 503 is rotatably connected to the clamping block 506. The support base 504 is mounted on the clamping cylinder 503. One end of the hinge 505 is hinged to the support base 504, and the other end of the hinge is hinged to the clamping block 506. The clamping block 506 is used to clamp the upper cover plate 9 located on the second positioning seat 500.

[0031] One of the key components of the front positioning mechanism 5 is the clamping assembly, which consists of a clamping cylinder 503, a support base 504, a hinge 505, and a clamping block 506. The clamping cylinder 503 is fixed in a suitable position on the tooling table 1, with one end connected to the clamping block 506 via a rotatable connection. This means that the clamping cylinder 503 can transmit force to the clamping block 506 through rotation during operation. The support base 504 is mounted on the clamping cylinder 503, serving a load-bearing and supporting function. One end of the hinge 505 is hinged to the support base 504, and the other end is also hinged to the clamping block 506, thus forming a flexible linkage system. In actual operation, the clamping cylinder 503 drives the clamping block 506 through this hinge mechanism, thereby firmly clamping the upper cover plate 9 placed on the second positioning seat 500, ensuring a stable connection between the upper cover plate 9 and other components during riveting.

[0032] Furthermore, such as Figure 2 and Figure 6 As shown, the front positioning mechanism 5 has a bracket auxiliary pad 507, which is located on the side of the second positioning seat 500 and is used to support the upper cover plate 9.

[0033] The front positioning mechanism 5 also includes a support auxiliary pad 507. The auxiliary pad is located on the side of the second positioning seat 500. Its main function is to provide additional support for the upper cover plate 9. When the upper cover plate 9 is placed on the second positioning seat 500 for riveting, the support auxiliary pad 507 can reduce the weight load of the upper cover plate 9, maintain its horizontal stability, and prevent displacement or deformation due to uneven force during riveting.

[0034] Specifically, such as Figures 2 to 6 As shown, the riveting mechanism 2 has a pair of limiting slider seats 202, which are fixed on the tooling table 1 and located on both sides of the inner limiting block 100. The limiting slider seats 202 are provided with a first guide hole 203 and a second guide hole 204. The riveting head 201 is movably passed through the first guide hole 203. One end of the second auxiliary positioning block 501 is provided with a second elastic element 508, which is connected to the washer auxiliary positioning block 400. The other end of the second auxiliary positioning block 501 is slidably connected to the second guide hole 204.

[0035] The precise guidance and control of the riveting mechanism 2 is reflected in the design of a pair of limit slider seats 202. These limit slider seats 202 are fixed on both sides of the tooling table 1 and are positioned corresponding to the inner limit block 100. The limit slider seats 202 are respectively provided with a first guide hole 203 and a second guide hole 204. The riveting head 201 can move freely in the first guide hole 203 to ensure the accuracy of its linear feed. One end of the second auxiliary positioning block 501 is equipped with a second elastic element 508, which is connected to the washer auxiliary positioning block 400. The other end of the second auxiliary positioning block 501 can slide in the second guide hole 204. This design not only ensures the flexible positioning of the damping shaft 11 during the riveting process, but also ensures the dynamic stability during the riveting process, and also prevents the second auxiliary positioning block 501 from being damaged during the riveting process.

[0036] It should be noted that both the first elastic element 104 and the second elastic element 508 are springs.

[0037] Specifically, such as Figures 1 to 5 As shown, the riveting mechanism 2 is provided with a sensing element 205, which is located on the end side of the limiting slider seat 202 away from the inner limiting block 100. The driving end of the gas-liquid booster cylinder 200 is provided with a connecting shaft 206. The end of the riveting joint 201 away from the inner limiting block 100 is engaged with the connecting shaft 206, and the connecting shaft 206 moves against the limiting slider seat 202.

[0038] To monitor the riveting process in real time, a sensing element 205 is installed on the riveting mechanism 2. The sensing element 205 is located on the limiting slider seat 202 on the side away from the inner limiting block 100. At the same time, a connecting shaft 206 is provided at the drive end of the pneumatic-hydraulic booster cylinder 200. When the end of the connecting shaft 206 is in contact with the limiting slider seat 202, the sensing element 205 can stop the drive end of the pneumatic-hydraulic booster cylinder 200 from moving, ensuring that the product is riveted in place. This structural design is conducive to accurately controlling the stroke of the riveting joint 201, ensuring the safety and accuracy of the riveting operation.

[0039] In this embodiment, a slot is provided on the connecting shaft 206, and a connecting shaft is provided at the end of the rivet joint 201 away from the inner limit block 100. The connecting shaft is engaged with the slot, which facilitates the subsequent maintenance and replacement of the rivet joint 201 by the operators.

[0040] Specifically, the lower end of the tooling table 1 is provided with a support frame 107 and an electrical control box 108. The electrical control box 108 is located in the support frame 107. The support frame 107 is used to support the tooling table 1, and the electrical control box 108 is used to control the riveting mechanism 2 and the front positioning mechanism 5.

[0041] In the underlying structural design of the entire device, a support frame 107 is fixed at the lower end of the tooling table 1, and an electrical control box 108 is set inside this frame. The support frame 107 undertakes the task of supporting the entire tooling table 1 and ensuring that the device remains stable during operation. The electrical control box 108 plays the role of the core controller. It is embedded inside the support frame 107 and is responsible for regulating the various actions of the entire riveting mechanism 2 and the front positioning mechanism 5. Through the intelligent electronic control system, it ensures that the entire device accurately executes the riveting process according to the predetermined program and parameters. It is worth mentioning that the tooling table 1 is equipped with operation buttons to facilitate the control of the electrical control box 108.

[0042] During loading, first, the metal fixing pad 6 is inserted onto the left and right positioning pins 103 of the inner limit block 100. The metal fixing pad 6 can be positioned in the irregular groove of the inner limit block 100, which can ensure that the left and right sides are positioned concentrically. There are two reset handles 106 on the inner limit block 100. The handles 106 are connected to the positioning pins 103. After the two positioning pins 103 are moved back (moving closer to each other) to the designated position, the lower fixing base 7 of the armrest hinge is installed on the first positioning seat 300. The reset handles 106 are released. Under the action of the reset spring, the positioning pins 103 position the rivet holes on both sides of the lower fixing base 7 concentrically on the first auxiliary positioning block 301. The rivet holes on both sides of the lower fixing base 7 are kept in place under the limiting action of the positioning pins 103. The plastic limiting pieces 8 are then placed on the left and right washer auxiliary positioning blocks 400 respectively. The upper cover plate 9 assembly of the armrest hinge is then placed on the second positioning seat 500. The damping connecting piece 10 and the damping shaft 11 on the upper cover plate 9 assembly have been pre-pressed. The damping shaft 11 is corrected on the second auxiliary positioning block 501 to ensure concentricity of the left and right sides.

[0043] The working principle of a horizontal synchronous riveting damping shaft device: When the operator presses the riveting button, the entire riveting process proceeds under the precise control of the PLM electronic control system. First, the electronic control system instructs the clamping cylinder 503 assembly to activate. This assembly applies pressure to the upper cover plate 9 assembly of the armrest hinge through a mechanical transmission structure, pre-clamping it to eliminate any possible gaps and ensure a tight fit between the upper cover plate 9 and the lower fixed base 7 during riveting. After a short delay (e.g., 1 second), the electronic control system continues to control the simultaneous activation of the pneumatic-hydraulic booster cylinders 200 on both sides, pushing the riveting joint 201 inward synchronously. At this time, the extrusion head of the damping shaft 11 adopts a knurled structure design, the purpose of which is to effectively extrude with the riveting holes on both sides of the lower fixed base 7 during the riveting process, forming a proper interference fit. The size of the interference fit directly determines the functional performance and durability of the product in actual use; therefore, the precision during the riveting process is crucial. During the riveting stage, the sensor switch monitors the position and riveting progress of the rivet joint 201 in real time. Once the rivet joint 201 approaches or reaches the preset riveting depth, the sensor signal is fed back to the electronic control system, triggering the pneumatic-hydraulic booster cylinder 200 to enter the hydraulic boosting mode and simultaneously maintain pressure to ensure that the damping shaft 11 is fully and evenly riveted to the bottom, forming a stable connection. When the rivet joint 201 has indeed reached the designated riveting depth, the limit slider seat 202 plays a crucial limiting role, preventing the rivet joint 201 from going further and ensuring that the parts are not damaged due to over-riveting. After riveting is completed, the pneumatic-hydraulic booster cylinder 200 unloads the pressure, and the rivet joint 201 returns to its initial position under the action of the pneumatic-hydraulic booster cylinder 200. Because the riveting joint 201 in the device design is concentric and moves synchronously, and the fixed base and limiting mechanism of the workpiece are precision machined in one go, the height symmetry and accuracy of the riveting on both sides can be ensured in both the riveting damping shaft 11 and the cooperation with the damping connecting piece 10, thereby greatly improving the overall accuracy and work efficiency of riveting.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0045] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A device for horizontally synchronously riveting damping shafts, characterized in that, include: A tooling table is provided with an inner limiting block located at the center of the tooling table. Positioning contour grooves are provided on both sides of the inner limiting block for positioning the fixing pad to be assembled. The riveting mechanism has a pair of pneumatic-hydraulic booster cylinders, which are located on the tooling table and are symmetrically arranged along the inner limit block. Each pneumatic-hydraulic booster cylinder is connected to a riveting joint, and the axes of the riveting joints on both sides are collinear. The rear positioning mechanism has a first positioning seat and a pair of first auxiliary positioning blocks. The first positioning seat is disposed on the tooling table, and the pair of first auxiliary positioning blocks are respectively located on both sides of the inner limiting block. The first positioning seat is used to position the lower fixed base to be processed, and the pair of first auxiliary positioning blocks are used to position the riveting hole of the lower fixed base. A washer positioning mechanism has a pair of washer auxiliary positioning blocks, which are respectively connected to both sides of the inner limiting block, and the first auxiliary positioning block is located between the washer auxiliary positioning block and the positioning contour groove. The washer auxiliary positioning block is used to position the limiting piece to be processed. The front positioning mechanism has a second positioning seat and a pair of second auxiliary positioning blocks. The second positioning seat is disposed on the tooling table and located at the end of the inner limiting block away from the first positioning seat. The pair of second auxiliary positioning blocks are respectively slidably disposed on both sides of the inner limiting block along the axial direction of the rivet joint, and each second auxiliary positioning block is located between the corresponding side of the gas-hydraulic booster cylinder and the washer auxiliary positioning block. The second positioning seat is used to position the upper cover plate to be processed, and the pair of second auxiliary positioning blocks are used to position the damping shafts pre-installed on the damping connecting pieces on both sides of the upper cover plate. The inner limiting block has a groove in the middle, and retractable positioning pins are inserted on both sides of the inner limiting block. The positioning pins are collinear with the axis of the rivet joint. The positioning pins can extend from the side of the inner limiting block to the corresponding position of the positioning groove, so that the positioning pins move against the damping shaft.

2. The device for horizontal synchronous riveting of damping shafts according to claim 1, characterized in that, The inner limiting block is provided with a first elastic element, which is located in the groove. The end of the positioning pin near the groove is provided with a limiting part, and the two ends of the first elastic element are respectively connected to the limiting parts of the positioning pins on both sides that are close to each other.

3. The device for horizontal synchronous riveting of damping shafts according to claim 1, characterized in that, The inner limiting block is provided with a track groove and a handle on its left and right sides. The handle on each side passes through the track groove on the corresponding side and is connected to the positioning pin on the corresponding side.

4. The device for horizontal synchronous riveting of damping shafts according to claim 1, characterized in that, The first positioning seat is provided with a first error-proofing detection pin, and the lower fixed base is provided with a first error-proofing hole, and the first error-proofing detection pin is connected to the first error-proofing hole; the second positioning seat is provided with a second error-proofing detection pin, and the lower fixed base is provided with a second error-proofing hole, and the second error-proofing detection pin is connected to the second error-proofing hole.

5. The device for horizontal synchronous riveting of damping shafts according to claim 1, characterized in that, The front positioning mechanism has a clamping assembly, which includes a clamping cylinder, a support base, a hinge component, and a clamping block. The clamping cylinder is mounted on the tooling table, one end of which is rotatably connected to the clamping block. The support base is mounted on the clamping cylinder. One end of the hinge component is hinged to the support base, and the other end of the hinge component is hinged to the clamping block. The clamping block is used to clamp the upper cover plate located on the second positioning seat.

6. The device for horizontal synchronous riveting of damping shafts according to claim 5, characterized in that, The front positioning mechanism has a bracket auxiliary pad, which is located on the side of the second positioning seat and is used to support the upper cover plate.

7. The device for horizontal synchronous riveting of damping shafts according to claim 1, characterized in that, The riveting mechanism has a pair of limiting slider seats, which are fixed on the tooling table and located on both sides of the inner limiting block. The limiting slider seats are provided with a first guide hole and a second guide hole. The riveting head is movably passed through the first guide hole. One end of the second auxiliary positioning block is provided with a second elastic element, which is connected to the washer auxiliary positioning block. The other end of the second auxiliary positioning block is slidably connected to the second guide hole.

8. The device for horizontal synchronous riveting of damping shafts according to claim 7, characterized in that, The riveting mechanism is equipped with a sensing element, which is located on the end of the limiting slider seat away from the inner limiting block. The driving end of the gas-liquid booster cylinder is equipped with a connecting shaft. The end of the riveting head away from the inner limiting block is detachably connected to the connecting shaft. The connecting shaft is movably abutted against the limiting slider seat.

9. The device for horizontal synchronous riveting of damping shafts according to claim 1, characterized in that, The lower end of the tooling table is provided with a support frame and an electrical control box. The electrical control box is located in the support frame, which is used to support the tooling table. The electrical control box is used to control the operation of the riveting mechanism and the front positioning mechanism.

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