A hole-making riveting device for assembling large-size plate parts

Abstract

The application relates to the technical field of mechanical manufacturing, and discloses a hole-making and riveting device for assembling large-size plate parts, which comprises a walking track, a lifting assembly fixedly installed at the output end of the walking track, a hybrid power assembly fixedly installed at the output end of the lifting assembly and a mechanical arm arranged at the output end of the walking track, the mechanical arm is used for conveying rivets, and a protective cover is fixedly installed on the outer wall of the hybrid power assembly. The reinforcing mechanism formed by splicing multiple reinforcing plates is arranged, a hole-shaped structure coaxial with the hole-making mechanism is formed by the cooperation of the second inclined surfaces at the edges of the reinforcing plates, the plate is locally rigidly reinforced before riveting, the structure can effectively offset the elastic deformation caused by the hammering force in the riveting process and the gravity of the plate, the displacement or plastic deformation of the plate during riveting is reduced, the precision of the riveting position is ensured, and the technical problem that the large-size thin-walled plate parts are prone to deformation and cause assembly errors is solved.

Description

Technical Field

[0001] This invention belongs to the field of mechanical manufacturing technology, and specifically relates to a hole-making and riveting device for assembling large-size sheet metal parts. Background Technology

[0002] Hole-making and riveting devices are key automated equipment used in industrial manufacturing to connect two or more components together. The equipment uses strong pressure to process pre-made holes in two materials by pushing rivets, and then upsetting the tail of the rivets to complete the fastening connection.

[0003] Some long, narrow sheet metal parts, due to their large size, also have a large mass. Moreover, these sheet metal parts are mostly thin-walled structures with poor overall rigidity. During the drilling and riveting process, the hammering force generated, combined with the weight of the sheet metal part itself, can easily cause plastic deformation that is difficult to detect with the naked eye. This slight deformation will change the stress distribution of the sheet metal part. During the subsequent upsetting, the sheet metal part is already in a deformed state. After riveting, the riveting position will be fixed in the deformed state. Some sheet metal parts may also spring back after riveting, resulting in inconsistent gaps or shape errors. For sheet metal parts with shape requirements, the deformation of the riveting part will directly affect its subsequent use. Summary of the Invention

[0004] This invention provides a hole-making and riveting device for assembling large-size sheet metal parts, which solves the technical problem in related technologies that large-size thin-walled sheet metal parts undergo plastic deformation during the riveting process, resulting in low riveting position accuracy and gaps or shape errors after assembly.

[0005] This invention provides a hole-making and riveting device for assembling large-size sheet metal parts, including a traveling track, a lifting assembly fixedly installed at the output end of the traveling track, a hybrid power assembly fixedly installed at the output end of the lifting assembly, and a robotic arm disposed at the output end of the traveling track. The robotic arm is used to transport rivets. A protective cover is fixedly installed on the outer wall of the hybrid power assembly. A hole-making and riveting assembly is rotatably installed at the end of the hybrid power assembly. The hole-making and riveting assembly is connected to the hybrid power assembly through a motor and a belt drive assembly. The hole-making and riveting assembly includes a positioning mechanism, a hole-making mechanism, and a reinforcing mechanism. The reinforcing mechanism is movably installed on the surface of the positioning mechanism. The hole-making mechanism is located above the reinforcing mechanism. The reinforcing mechanism includes a reinforcing plate, which is slidably installed on the positioning mechanism. A first inclined surface and a second inclined surface are respectively provided at two adjacent edges of the reinforcing plate. The first inclined surface and the second inclined surface slide in contact between two adjacent reinforcing plates. Multiple reinforcing plates are spliced ​​around the second inclined surface to form a hole-like structure. The reinforcing plates are attached to the surface of the sheet metal part, and the hole-like structure determines the hole-making position.

[0006] In a preferred embodiment, a transmission gear and a toothed ring are rotatably mounted on the positioning mechanism. The toothed ring is coaxially arranged with the hole-like structure. The transmission gear is located between the toothed ring and the reinforcing plate. The side of the reinforcing plate facing the toothed ring meshes with the transmission gear, and the inner side of the toothed ring meshes with the transmission gear.

[0007] In a preferred embodiment, the positioning mechanism includes a positioning frame and a support unit. The corner of the positioning frame is rotatably connected to the hybrid power assembly. The drilling mechanism is fixedly installed on the top of the support unit. The support unit includes a positioning base, which is fixedly installed at both ends of the positioning frame.

[0008] In a preferred embodiment, the support unit further includes a first hollow plate and a second hollow plate. The first hollow plate is fixedly connected to one of the positioning bases, and the second hollow plate is located above the first hollow plate. A support plate is slidably connected to one end of the first hollow plate and one end of the second hollow plate.

[0009] In a preferred embodiment, a guide rod is provided between one end of the two positioning bases, and a threaded drive assembly is fixedly installed on the upper surface of the lower positioning base. The threaded rod of the threaded drive assembly passes through the first hollow plate and does not contact the first hollow plate. The threaded rod of the threaded drive assembly is threadedly connected to the second hollow plate, and one end of the second hollow plate is slidably connected to the guide rod.

[0010] In a preferred embodiment, a servo drive assembly is fixedly mounted on the surface of the support plate, the output end of the servo drive assembly is fixedly connected to one of the transmission gears, the transmission gear is rotatably mounted on the support plate, and a positioning ring is fixedly mounted on the surface of the support plate, with the gear ring rotatably mounted inside the positioning ring.

[0011] In a preferred embodiment, an anti-detachment block is fixedly connected to one side of the reinforcing plate, the anti-detachment block is slidably connected to the support plate, a strip-shaped hole is provided at the junction of the support plate and the anti-detachment block, and a through hole is provided inside the support plate, with the hole structure and the through hole being coaxially arranged.

[0012] In a preferred embodiment, a notch is provided at the edge of the support plate, and a tooth is provided on the side wall of the notch. A first gear drive assembly is fixedly installed inside both the second hollow plate and the first hollow plate, and the gear at the output end of the first gear drive assembly meshes with the tooth.

[0013] In a preferred embodiment, a support rod is threaded onto the inside of the reinforcing plate, a driven gear is fixedly connected to the bottom of the support rod, a circular hole is formed at the top of the reinforcing plate, the support rod is located inside the circular hole, and the driven gear is located inside the reinforcing plate.

[0014] In a preferred embodiment, a second gear drive assembly is fixedly installed inside the reinforcing plate, and a rack is slidably installed inside the reinforcing plate. The rack meshes with the gear at the output end of the second gear drive assembly and with the driven gear. The support rod has a split structure with a cavity inside. A linear telescopic assembly is fixedly installed on the top inner side of the support rod, and the output end of the linear telescopic assembly is fixedly connected to the bottom of the support rod.

[0015] The beneficial effects of this invention are as follows: This invention employs a reinforcement mechanism formed by splicing multiple reinforcement plates. By utilizing the second inclined surface of the reinforcement plate edge to form a hole-like structure coaxial with the hole-making mechanism, the plate is locally rigidly reinforced before riveting. This structure can effectively counteract the elastic deformation caused by the hammering force and the plate's own weight during the riveting process, reducing the displacement or plastic deformation of the plate during riveting, thereby ensuring the accuracy of the riveting position and solving the technical problem of assembly errors caused by the easy deformation of large-size thin-walled plate parts.

[0016] The present invention, by setting a thickness adjustment mechanism consisting of a threaded drive assembly and a guide rod, can drive the second hollow plate to move relative to the first hollow plate, thereby adjusting the distance between the upper and lower support plates, so that the device can adapt to sheet metal parts of different thicknesses.

[0017] This invention achieves seamless support for curved sheet metal by setting support rods inside the reinforcing plate and automatically adjusting the height of the support rods according to the shape of the curved part. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the hybrid power assembly and the hole-making and riveting assembly of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the hole-making and riveting assembly of the present invention.

[0021] Figure 4 This is a side view of the hole-making and riveting assembly of the present invention.

[0022] Figure 5 This is a schematic diagram showing the disassembled structure of the hole-making mechanism and the support plate of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the reinforcement mechanism of the present invention.

[0024] Figure 7 This is a schematic diagram of the planar structure of the support plate and the reinforcing plate of the present invention.

[0025] Figure 8This is a schematic diagram of the planar structure of the support plate and the second hollow plate of the present invention.

[0026] Figure 9 This is a schematic diagram of the three-dimensional structure of the reinforcing plate of the present invention.

[0027] Figure 10 This is a three-dimensional structural diagram of the support rod and rack of the present invention.

[0028] Figure 11 This is a schematic diagram of the internal structure of the support rod of the present invention.

[0029] In the diagram: 1. Walking track; 2. Lifting assembly; 3. Robotic arm; 4. Hybrid power assembly; 5. Hole-making and riveting assembly; 51. Positioning frame; 52. Support unit; 521. Positioning base; 522. First hollow plate; 523. Second hollow plate; 524. Support plate; 525. Threaded drive assembly; 526. Guide rod; 527. Through hole; 528. Strip hole; 529. Notch; 5210. Protruding tooth; 5211. First gear drive assembly; 5 3. Hole-making mechanism; 54. Reinforcing mechanism; 541. Reinforcing plate; 542. Transmission gear; 543. Gear ring; 544. Positioning ring; 545. Servo drive assembly; 546. Anti-detachment block; 547. First inclined plane; 548. Second inclined plane; 549. Support rod; 5410. Circular hole; 5411. Driven gear; 5412. Rack; 5413. Second gear drive assembly; 5414. Cavity; 5415. Linear telescopic assembly; 6. Protective cover. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] Example 1 like Figure 1 , Figure 2 , Figure 3 , Figure 8 and Figure 9As shown, a hole-making and riveting device for assembling large-size sheet metal parts includes a traveling track 1, a lifting assembly 2 fixedly installed at the output end of the traveling track 1, a hybrid power assembly 4 fixedly installed at the output end of the lifting assembly 2, and a robotic arm 3 disposed at the output end of the traveling track 1. The robotic arm 3 is used to transport rivets. A protective cover 6 is fixedly installed on the outer wall of the hybrid power assembly 4. A hole-making and riveting assembly 5 is rotatably installed at the end of the hybrid power assembly 4. The hole-making and riveting assembly 5 is connected to the hybrid power assembly 4 through a motor and a belt drive assembly. The hole-making and riveting assembly 5 includes a positioning mechanism, a hole-making mechanism 53, and a reinforcing mechanism. Mechanism 54, the reinforcement mechanism 54 is movably mounted on the surface of the positioning mechanism, the hole-making mechanism 53 is located above the reinforcement mechanism 54, the reinforcement mechanism 54 includes a reinforcement plate 541, the reinforcement plate 541 is slidably mounted on the positioning mechanism, the two adjacent edges of the reinforcement plate 541 are respectively provided with a first inclined surface 547 and a second inclined surface 548, the first inclined surface 547 and the second inclined surface 548 slide in contact between two adjacent reinforcement plates 541, multiple reinforcement plates 541 are spliced ​​around the second inclined surface 548 to form a hole-like structure, the reinforcement plate 541 is attached to the surface of the plate part, and the hole-like structure determines the hole-making position.

[0032] It should be noted that the lifting assembly 2 moves along the travel track 1, and the sheet metal parts to be assembled are placed on the support equipment and positioned on the side of the travel track 1. When drilling and riveting long strip sheet metal parts, the robotic arm 3 delivers the rivet to the drilling and riveting assembly 5 at the end of the hybrid power assembly 4. The hybrid power assembly 4 mainly consists of three sets of electric cylinders, with an actuator connected between the piston rod ends of the three sets of electric cylinders. In use, the height of the hybrid power assembly 4 is controlled by the lifting assembly 2, resulting in higher processing accuracy for the drilling and riveting assembly 5. By coordinating the operation of the three sets of electric cylinders, the drilling and riveting assembly 5 can be moved precisely within a small area. At the same time, the actuator is rotated by the motor and belt drive assembly to adjust the angle of the drilling and riveting assembly 5. During drilling and riveting, the positioning mechanism drives the reinforcing mechanism 54 to fit onto the sheet metal parts to be assembled, so that the reinforcing plate 541 fits against the sheet metal parts. The number of reinforcing plates 541 is at least four. Between adjacent reinforcing plates 541, the first inclined surface 547 and the second inclined surface 548 slide in contact. After multiple reinforcing plates 541 are surrounded, the second inclined surface 548 can form a hole-like structure. The hole-like structure is coaxial with the hole-making mechanism 53 and can fit completely near the part of the plate part that needs to be holed. After the reinforcing plate 541 fits with the plate part, the hole-making mechanism 53 starts to make holes. The hole-making mechanism 53 is composed of an electric cylinder. The piston rod of the electric cylinder extends and pushes the rivet delivered by the robotic arm 3. During the process of the rivet passing through two layers of material, a riveting hole will be generated on the part. The edge of the riveting hole will be rigidly reinforced by the reinforcing plate 541. The reinforcing plate 541 is used to offset the plastic deformation caused by the hammering force and the weight of the plate itself during the riveting process, reducing the displacement or plastic deformation of the plate during riveting, thereby reducing the error caused by deformation at the riveting position. Finally, the tail of the rivet is upset by the riveting tool to achieve a fastening connection.

[0033] Furthermore, such as Figure 3 , Figure 5 and Figure 6 As shown, a transmission gear 542 and a toothed ring 543 are rotatably mounted on the positioning mechanism. The toothed ring 543 is coaxially arranged with the hole-shaped structure. The transmission gear 542 is located between the toothed ring 543 and the reinforcing plate 541. The side of the reinforcing plate 541 facing the toothed ring 543 meshes with the transmission gear 542. The inner side of the toothed ring 543 meshes with the transmission gear 542.

[0034] It should be noted that the transmission gear 542 is used to drive the reinforcing plate 541. The number of transmission gears 542 corresponds one-to-one with the number of reinforcing plates 541. The transmission gear 542 also meshes with the gear ring 543. When it is necessary to adjust the size of the hole structure, rotating any one of the transmission gears 542 will simultaneously push the reinforcing plate 541 and the gear ring 543. The movement of the reinforcing plate 541 will adjust the size of the hole structure. When adjusting the position of the reinforcing plate 541, the rotation of the gear ring 543 will drive the remaining transmission gears 542. Through these transmission gears 542, all the reinforcing plates 541 will be moved simultaneously, thereby achieving the purpose of moving all the reinforcing plates 541 and ensuring that all the reinforcing plates 541 are in a state of synchronous movement.

[0035] Example 2 like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, when drilling and riveting long strip plate parts that need to be drilled and riveted near the center area, as well as some thicker plate parts, the drilling and riveting assembly 5 will be obstructed by the plate parts when it moves, causing the reinforcing plate 541 to be unable to move to the drilling and riveting part of the plate parts. In order to ensure that the drilling and riveting assembly 5 can adapt to plate parts of different widths and to ensure the synchronization of the movement of the upper and lower reinforcing plates 541, this application further provides the following technical solutions.

[0036] The positioning mechanism includes a positioning frame 51 and a support unit 52. The corner of the positioning frame 51 is rotatably connected to the hybrid power assembly 4. The drilling mechanism 53 is fixedly installed on the top of the support unit 52. The support unit 52 includes a positioning base 521, which is fixedly installed at both ends of the positioning frame 51. The support unit 52 also includes a first hollow plate 522 and a second hollow plate 523. The first hollow plate 522 is fixedly connected to one of the positioning bases 521, and the second hollow plate 523 is located above the first hollow plate 522. A support plate 524 is slidably connected to one end of the first hollow plate 522 and one end of the second hollow plate 523. A guide rod 526 is provided between one end of the two positioning bases 521. A threaded drive assembly 525 is fixedly installed on the upper surface of the lower positioning base 521. The threaded rod of the threaded drive assembly 525 passes through the first hollow plate 522 and does not contact the first hollow plate 522. The threaded rod of the threaded drive assembly 525 is threadedly connected to the second hollow plate 523. One end of the second hollow plate 523 is slidably connected to the guide rod 526.

[0037] It should be noted that the positioning mechanism is used to determine the positions of the drilling mechanism 53 and the reinforcing mechanism 54. The positioning frame 51 is used to connect the motor and belt drive assembly in the hybrid power assembly 4. The output end of the motor and belt drive assembly is fixedly connected to a drive shaft. The drive shaft is rotatably mounted on the inner side of the actuator and fixedly connected to the positioning frame 51. In use, the motor and belt drive assembly drives the positioning frame 51 through the drive shaft to adjust the angle of the support unit 52. The support unit 52 mainly consists of a positioning base 521, a first hollow plate 522, and a second hollow plate 523. The positioning base 521 is used to connect the positioning frame 51 to determine the positions of the first hollow plate 522 and the second hollow plate 523. Both plate 522 and the second hollow plate 523 are slidably connected to support plates 524. Support plates 524 are used to determine the position of the reinforcing mechanism 54. When the reinforcing mechanism 54 is delivered to the plate part, the distance between the first hollow plate 522 and the second hollow plate 523 is first adjusted according to the thickness of the plate part. The thread drive assembly 525 is activated, and the threaded rod drives the second hollow plate 523, so that the second hollow plate 523 moves up and down along the guide rod 526, while the first hollow plate 522 remains stationary. This achieves the purpose of adjusting the spacing, so that the entire hole riveting assembly 5 can adapt to plate parts of different thicknesses. The guide rod 526 is used to connect the two positioning bases 521 to ensure the structural stability of the entire positioning mechanism.

[0038] Furthermore, such as Figure 5 , Figure 6 and Figure 7 As shown, a servo drive assembly 545 is fixedly mounted on the surface of the support plate 524. The output end of the servo drive assembly 545 is fixedly connected to one of the transmission gears 542. The transmission gear 542 is rotatably mounted on the support plate 524. A positioning ring 544 is fixedly mounted on the surface of the support plate 524. A toothed ring 543 is rotatably mounted inside the positioning ring 544. An anti-detachment block 546 is fixedly connected to one side of the reinforcing plate 541. The anti-detachment block 546 is slidably connected to the support plate 524. A strip hole 528 is provided at the junction of the support plate 524 and the anti-detachment block 546. A through hole 527 is provided inside the support plate 524. The hole structure is coaxially arranged with the through hole 527.

[0039] It should be noted that the servo drive assembly 545 is used to drive the transmission gear 542 connected to it. The servo drive assembly 545 is mounted on the support plate 524. In use, the servo drive assembly 545 drives a transmission gear 542, which in turn drives the gear ring 543 and the reinforcing plate 541 to adjust the position of the reinforcing plate 541. A positioning ring 544 is installed on the support plate 524 to determine the position of the gear ring 543. The transmission gear 542 is rotatably mounted on the support plate 524, and its position will not change. During operation, the reinforcement mechanism 54 will not become loose. The reinforcement plate 541 is slidably connected to the support plate 524 through the anti-detachment block 546. Inside the support plate 524, there is a through hole 527 for accommodating rivets and determining the position of the drilled holes. Around the through hole 527, there are also a number of strip holes 528 corresponding to the reinforcement plate 541. The anti-detachment block 546 is slidably disposed inside the strip holes 528, which determines the movement path of the reinforcement plate 541 and prevents the reinforcement plate 541 from falling off the support plate 524.

[0040] Furthermore, such as Figure 8 As shown, a notch 529 is provided at the edge of the support plate 524, and a tooth 5210 is provided on the side wall of the notch 529. A first gear drive assembly 5211 is fixedly installed inside the second hollow plate 523 and the first hollow plate 522. The gear at the output end of the first gear drive assembly 5211 meshes with the tooth 5210.

[0041] It should be noted that the notch 529 is located at the edge of the support plate 524. The presence of the notch 529 creates a cavity structure between the support plate 524, the first hollow plate 522, and the second hollow plate 523. The first gear drive assembly 5211 is disposed within this cavity structure. Furthermore, the notch 529 causes the portion of the support plate 524 located inside the second hollow plate 523 and the first hollow plate 522 to form an L-shaped structure. When the first gear drive assembly 5211 operates, it engages with the protruding teeth 5210. The support plate 524 is pushed out from the first hollow plate 522 and the second hollow plate 523 to ensure that the support plate 524 can move on some wide sheet metal parts. The first gear drive assembly 5211 is located in the notch 529. During the movement of the support plate 524, the L-shaped structure will be obstructed by the first gear drive assembly 5211, thereby preventing the support plate 524 from disengaging from the second hollow plate 523 and the first hollow plate 522. The first gear drive assembly 5211 consists of a servo motor and a gear at its output end.

[0042] Example 3 like Figure 9 , Figure 10 and Figure 11As shown, some elongated sheet metal parts have curved surfaces. If a flat reinforcing plate 541 is directly attached to the sheet metal part, it will cause the sheet metal part to deform. Therefore, the reinforcing plate 541 cannot be attached to the curved surface of the sheet metal part, resulting in a gap between the reinforcing plate 541 and the curved surface of the sheet metal part. These gaps will still provide deformation space for the sheet metal part. In order to reinforce the hole-making part of the elongated sheet metal part with curved surface structure, this application further provides the following technical solution.

[0043] A support rod 549 is threaded inside the reinforcing plate 541. A driven gear 5411 is fixedly connected to the bottom of the support rod 549. A circular hole 5410 is opened at the top of the reinforcing plate 541. The support rod 549 is located inside the circular hole 5410. The driven gear 5411 is located inside the reinforcing plate 541. A second gear drive assembly 5413 is fixedly installed inside the reinforcing plate 541. A rack 5412 is slidably installed inside the reinforcing plate 541. The rack 5412 meshes with the gear at the output end of the second gear drive assembly 5413. The rack 5412 meshes with the driven gear 5411. The support rod 549 has a split structure. A cavity 5414 is opened inside the support rod 549. A linear telescopic assembly 5415 is fixedly installed on the top inner side of the support rod 549. The output end of the linear telescopic assembly 5415 is fixedly connected to the bottom of the support rod 549.

[0044] It should be noted that the support rod 549 is built into the reinforcing plate 541, specifically located on the second inclined surface 548 near the first inclined surface 547. Multiple support rods 549 are evenly spaced along the length of the second inclined surface 548. When the sheet metal part has a curved structure, the reinforcing plate 541 cannot fit against it. In this case, the second gear drive assembly 5413, located inside the reinforcing plate 541, is activated. The second gear drive assembly 5413 consists of a servo motor and a gear at its output end. The second gear drive assembly 5413 simultaneously drives multiple driven gears 5411 through meshing with the rack 5412. The driven gears 5411 drive the support rod 549 to rotate. During rotation, the threaded engagement between the support rod 549 and the reinforcing plate 541 allows the support rod 549 to rotate along... The circular hole 5410 moves up and down, allowing the support rod 549 to reach the vicinity of the hole-making area on the curved surface of the sheet metal part. When one of the support rods 549 contacts the sheet metal part, the second gear drive assembly 5413 stops operating. Each support rod 549 is equipped with a contact sensor at its end to detect whether it has contacted the sheet metal part. The support rod 549 is a split structure, with the two structures connected by a linear telescopic assembly 5415, which is an electric cylinder. When one of the support rods 549 contacts the sheet metal part, the other support rods 549 may not be in contact with the sheet metal part. At this time, the linear telescopic assembly 5415 pushes the split structure at the top of the support rod 549 upward to ensure that the top of the support rod 549 can contact the sheet metal part.

[0045] Working principle of the invention: When riveting long strip plate parts, the plate parts to be assembled are placed on the support equipment and located on the side of the travel track 1. The lifting component 2 moves along the travel track 1 to adjust the horizontal position. At the same time, the hybrid power component 4, combined with the lifting component 2, performs multi-degree-of-freedom control. Through the joint operation of three sets of electric cylinders, the riveting component 5 moves precisely within a small range, and the angle is adjusted by the motor and belt drive component. The robotic arm 3 delivers the rivet to the riveting component 5. During operation, the positioning mechanism drives the reinforcing mechanism 54 to fit against the surface of the plate parts to be assembled. Multiple reinforcing plates 541 slide in contact with each other through the first inclined surface 547, and multiple second inclined surfaces 548 form a hole-like structure. This hole-like structure is coaxial with the riveting mechanism 53, ensuring that the reinforcing plates 541 are completely fitted near the area where the hole needs to be made. After the fit is completed, the riveting mechanism 53, composed of electric cylinders, extends the piston rod and pushes the rivet through the pre-made hole in the two layers of material. Finally, the tail of the rivet is upset to achieve a fastening connection.

[0046] To accommodate different hole-making requirements, a transmission gear 542 and a gear ring 543 are rotatably mounted on the positioning mechanism. When the size of the hole structure needs to be adjusted, the servo drive component 545 drives one of the transmission gears 542 to rotate. The transmission gear 542 simultaneously pushes the reinforcing plate 541 and the gear ring 543. The movement of the reinforcing plate 541 directly changes the size of the hole structure. At the same time, the rotation of the gear ring 543 drives all the other transmission gears 542, thereby synchronously driving all the reinforcing plates 541 to move, ensuring that all the reinforcing plates 541 are in a state of synchronous radial movement, thus adapting to the hole-making requirements of different sizes. The reinforcing plate 541 slides in the strip hole 528 through the anti-detachment block 546, which both determines the movement path and prevents it from falling off.

[0047] For sheet metal parts of different thicknesses, the thread drive assembly 525 is activated. Its threaded rod drives the second hollow plate 523 to move up and down along the guide rod 526, while the first hollow plate 522 remains stationary. This adjusts the distance between the two, allowing the drilling and riveting assembly 5 to adapt to parts of different thicknesses. In addition, the support plate 524 has a notch 529 at its edge, forming an L-shaped structure. The first gear drive assembly 5211 inside the first hollow plate 522 and the second hollow plate 523 meshes with the teeth 5210 on the side wall of the support plate 524 through the gear at its output end. During operation, the first gear drive assembly 5211 pushes the support plate 524 out of the hollow plate to accommodate wide-body parts. During the movement, the L-shaped structure is limited and hindered by the first gear drive assembly 5211, which can prevent the support plate 524 from detaching.

[0048] For sheet metal parts with curved surfaces, to prevent deformation caused by gaps between the flat reinforcing plate 541 and the sheet metal, a second gear drive assembly 5413 built into the reinforcing plate 541 is activated. This assembly meshes with a rack 5412, which in turn drives multiple driven gears 5411 to rotate, thereby driving multiple support rods 549 that are evenly spaced along the second inclined surface 548 to rotate. Under the action of threaded engagement, the support rods 549 extend upward along the direction of the circular hole 5410 until they abut against the curved surface of the sheet metal part. Each support rod 549 has a contact sensor at its end. When a support rod 549 touches the part, the second gear drive assembly 5413 stops operating. For the remaining support rods 549 that do not touch the part, the linear telescopic assembly 5415 inside will lift the top structure upward to ensure that all support rods 549 can fit tightly against the curved surface, thereby providing stable support for the hole-making area.

[0049] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A hole-making and riveting device for assembling large-size sheet metal parts, comprising a traveling track (1), a lifting assembly (2) fixedly installed at the output end of the traveling track (1), a hybrid power assembly (4) fixedly installed at the output end of the lifting assembly (2), and a robotic arm (3) disposed at the output end of the traveling track (1), the robotic arm (3) being used to transport rivets, and a protective cover (6) fixedly installed on the outer wall of the hybrid power assembly (4), characterized in that, The end of the hybrid power assembly (4) is rotatably mounted with a hole-making and riveting assembly (5), and the hole-making and riveting assembly (5) is connected to the hybrid power assembly (4) through a motor and a belt drive assembly. The hole-making and riveting assembly (5) includes a positioning mechanism, a hole-making mechanism (53), and a reinforcing mechanism (54). The reinforcing mechanism (54) is movably mounted on the surface of the positioning mechanism. The hole-making mechanism (53) is located above the reinforcing mechanism (54). The reinforcing mechanism (54) includes a reinforcing plate (541). The reinforcing plate (541) is slidably mounted on the positioning mechanism. A first inclined surface (547) and a second inclined surface (548) are respectively provided at two adjacent edges of the reinforcing plate (541). The first inclined surface (547) and the second inclined surface (548) slide in contact between two adjacent reinforcing plates (541). Multiple reinforcing plates (541) are spliced ​​around the second inclined surface (548) to form a hole-like structure. The reinforcing plate (541) is attached to the surface of the sheet metal part. The hole-like structure determines the hole-making position.

2. The hole-making and riveting device for assembling large-size sheet metal parts according to claim 1, characterized in that, The positioning mechanism is rotatably mounted with a transmission gear (542) and a toothed ring (543). The toothed ring (543) is coaxially arranged with the hole structure. The transmission gear (542) is located between the toothed ring (543) and the reinforcing plate (541). The side of the reinforcing plate (541) facing the toothed ring (543) meshes with the transmission gear (542). The inner side of the toothed ring (543) meshes with the transmission gear (542).

3. The hole-making and riveting device for assembling large-size sheet metal parts according to claim 1, characterized in that, The positioning mechanism includes a positioning frame (51) and a support unit (52). The corner of the positioning frame (51) is rotatably connected to the hybrid power assembly (4). The hole-making mechanism (53) is fixedly installed on the top of the support unit (52). The support unit (52) includes a positioning base (521), which is fixedly installed at both ends of the positioning frame (51).

4. A hole-making and riveting device for assembling large-size sheet metal parts according to claim 3, characterized in that, The support unit (52) further includes a first hollow plate (522) and a second hollow plate (523). The first hollow plate (522) is fixedly connected to one of the positioning bases (521), and the second hollow plate (523) is located above the first hollow plate (522). A support plate (524) is slidably connected to one end of the first hollow plate (522) and one end of the second hollow plate (523).

5. A hole-making and riveting device for assembling large-size sheet metal parts according to claim 4, characterized in that, A guide rod (526) is provided between one end of the two positioning bases (521). A threaded drive assembly (525) is fixedly installed on the upper surface of the lower positioning base (521). The threaded rod of the threaded drive assembly (525) passes through the first hollow plate (522) and does not contact the first hollow plate (522). The threaded rod of the threaded drive assembly (525) is threadedly connected to the second hollow plate (523). One end of the second hollow plate (523) is slidably connected to the guide rod (526).

6. A hole-making and riveting device for assembling large-size sheet metal parts according to claim 5, characterized in that, A servo drive assembly (545) is fixedly mounted on the surface of the support plate (524). The output end of the servo drive assembly (545) is fixedly connected to one of the transmission gears (542). The transmission gear (542) is rotatably mounted on the support plate (524). A positioning ring (544) is fixedly mounted on the surface of the support plate (524). A gear ring (543) is rotatably mounted on the inner side of the positioning ring (544).

7. A hole-making and riveting device for assembling large-size sheet metal parts according to claim 4, characterized in that, An anti-detachment block (546) is fixedly connected to one side of the reinforcing plate (541). The anti-detachment block (546) is slidably connected to the support plate (524). A strip hole (528) is provided at the junction of the support plate (524) and the anti-detachment block (546). A through hole (527) is provided inside the support plate (524). The hole structure and the through hole (527) are coaxially arranged.

8. A hole-making and riveting device for assembling large-size sheet metal parts according to claim 4, characterized in that, The support plate (524) has a notch (529) at its edge, and a tooth (5210) is provided on the side wall of the notch (529). The first gear drive assembly (5211) is fixedly installed inside the second hollow plate (523) and the first hollow plate (522). The gear at the output end of the first gear drive assembly (5211) meshes with the tooth (5210).

9. A hole-making and riveting device for assembling large-size sheet metal parts according to claim 1, characterized in that, The reinforcing plate (541) has a support rod (549) installed inside by a thread. The bottom of the support rod (549) is fixedly connected to a driven gear (5411). The top of the reinforcing plate (541) has a round hole (5410). The support rod (549) is located inside the round hole (5410), and the driven gear (5411) is located inside the reinforcing plate (541).

10. A hole-making and riveting device for assembling large-size sheet metal parts according to claim 9, characterized in that, The second gear drive assembly (5413) is fixedly installed inside the reinforcing plate (541), and a rack (5412) is slidably installed inside the reinforcing plate (541). The rack (5412) meshes with the gear at the output end of the second gear drive assembly (5413), and the rack (5412) meshes with the driven gear (5411). The support rod (549) is a split structure, and a cavity (5414) is opened inside the support rod (549). A linear telescopic assembly (5415) is fixedly installed on the top inner side of the support rod (549), and the output end of the linear telescopic assembly (5415) is fixedly connected to the bottom of the support rod (549).

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