A riveting assembly, a method for riveting thin-walled outward-facing components, and a riveting device.

Abstract

This invention discloses a riveting assembly, a method for riveting thin-walled outward-facing components, and a riveting device, belonging to the field of assembly processing technology. It solves the technical problems of high difficulty and low accuracy in riveting assemblies using existing riveting equipment. The riveting assembly provided by this invention includes component one and component two, which are connected together. After riveting, component one has a thin-walled portion on its upper outer periphery, extending outward and connecting with component two. The riveting device includes a riveting mechanism and a riveting support fixture. The riveting device is used for riveting the assembly. The riveting mechanism includes a rolling part and a rolling drive part for driving the rolling part. The riveting support fixture supports the riveting assembly and has a pressure-bearing and limiting part that cooperates with the riveting mechanism. This invention not only simplifies the riveting process but also achieves high riveting efficiency, realizing high-precision riveting processing of riveting assemblies.

Description

Technical Field

[0001] This invention belongs to the field of assembly processing technology, and more specifically, relates to a riveting assembly, a method for riveting thin-walled outward-facing assemblies, and a riveting device. Background Technology

[0002] In the existing technology, stamping and cutting are commonly used to process and deform bearings and other workpieces. However, this method is not only complex in terms of processing technology, but also has low processing accuracy, which can easily lead to defects in the processed assembly, affect the service life of the bearing parts, and even increase the probability of producing defective products and increase production costs.

[0003] Therefore, there is a need to develop simple and effective processing methods and equipment. Riveting devices are used to rivet items together, and they are widely used due to their compact structure, stable performance, and convenient and safe operation. However, for the processing of bearing and gear assemblies, the processing requirements are stringent. The workpieces must be firmly connected and able to withstand high pull-out forces. Furthermore, the deformation after riveting must be minimal, and the material has high hardness, making plastic deformation difficult. Therefore, riveting devices are generally difficult to use for riveting bearing and gear assemblies, resulting in low riveting efficiency. Mastering high-precision bearing and gear processing is extremely challenging. Summary of the Invention

[0004] This invention addresses the technical problems existing in the prior art by providing a rotary riveting assembly, a method for riveting thin-walled outward-facing assemblies, and a riveting device.

[0005] To solve the above-mentioned technical problems, the present invention first provides a riveting assembly, including component one and component two. Component one and component two are connected in a cooperative manner. After component one and component two are riveted, a thin-walled portion is provided on the outer periphery of the upper end of component one. The thin-walled portion extends outward in the radial direction and is connected in a cooperative manner with component two.

[0006] Preferably, the axial deformation of the thin-walled portion is less than 0.5 mm, the radial deformation of the thin-walled portion is less than 2 mm, and the angle between the upper end face and the side end face of the thin-walled portion is 90°.

[0007] The present invention also provides a riveting device for assemblies, including a riveting mechanism and a riveting support fixture. The riveting device is used for riveting assemblies. The riveting mechanism includes a rolling part and a rolling drive part for driving the rolling part. An axial moving part and a positioning part are connected to the rolling part. The riveting support fixture is used to support the riveting assembly. The riveting support fixture is provided with an assembly pressure-bearing and limiting part that cooperates with the riveting mechanism.

[0008] Preferably, the rolling section is provided with a rolling body and a rolling shaft for riveting and rolling, and the rolling body is movably connected to the rolling shaft.

[0009] Preferably, the riveting mechanism includes an elastic limiting part, which is connected to the rolling part. The upper end of the elastic limiting part is connected to the rolling drive part, and the lower end of the elastic limiting part is connected to the bottom of the rolling part. The elastic limiting part can extend and retract in the vertical direction.

[0010] Preferably, the lower end of the rolling section is connected to a pressing section, the pressing section is provided with a pressing plate, and the pressing plate is provided with positioning holes that cooperate with and are positioned by the riveting support tool.

[0011] Preferably, the riveting support fixture includes a support part, a pressure-bearing and limiting part of the assembly is disposed on the support part, a horizontally moving part is connected to the support part, and a horizontal limiting part is disposed on the side of the support part.

[0012] Preferably, the pressure-bearing limiting part of the assembly is provided with a positioning snap-fit ​​part that is adapted to the riveting assembly, and the pressure-bearing limiting part of the assembly is connected with a circumferential limiting part to limit the circumferential displacement of the pressure-bearing limiting part of the assembly.

[0013] Preferably, it also includes a control system, which is connected to a riveting pressure displacement monitoring mechanism and a material feeding induction and storage mechanism.

[0014] The present invention also provides a method for riveting thin-walled outward-facing assemblies, which involves using a riveting device to perform riveting operations on the rotary riveting assemblies;

[0015] First, components one and two of the assembly are sequentially loaded and placed on the riveting support fixture. The riveting support fixture pre-presses and positions the assembly. Then, the rolling drive unit provides power to drive the rolling part to descend and perform riveting operation on the assembly placed on the riveting support fixture. The pressing part at the lower end of the rolling part will first contact the support part of the riveting support fixture. Then, the rolling drive unit continues to provide power, and the elastic limiting part is deformed under pressure. As the descending pressure increases, under the continuous deformation of the elastic limiting part, the rolling part of the riveting mechanism contacts the assembly. The rolling part rotates around the assembly to rivet, completing the riveting of the bearing and the flat gear assembly.

[0016] The rolling drive unit controls the rotation speed of the rolling section to be 240-260 tr / min, and the riveting pressing speed is controlled at 3.5-5.5 m / min.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The riveting device and method provided by this invention can achieve precise riveting, ensuring a strong connection while allowing smooth rotation of the assembly. The assembly can withstand higher pull-out forces in the axial direction. This invention uses a riveting support fixture to stably support the riveted assembly. The pressure-bearing and limiting part of the assembly provides stable support, preventing circumferential movement and ensuring the accuracy of the riveting process. The rolling drive unit drives the rolling part to perform the riveting operation on the assembly, simplifying the riveting process and increasing efficiency. This enables high-precision riveting of rotating assemblies and achieves precise outward flanging of the assemblies. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of an embodiment of the riveting assembly of the present invention;

[0021] Figure 2 This is a structural schematic diagram of Embodiment 2 of the riveting assembly of the present invention;

[0022] Figure 3 For the present invention Figure 2 Schematic diagram of the sectional structure of the middle AA section;

[0023] Figure 4 This is a three-dimensional structural diagram of a portion of the bearing and gear riveting device of the present invention;

[0024] Figure 5 For the present invention Figure 4 Front view structural diagram;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the cross-sectional structure of the middle BB;

[0026] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at point C in the middle;

[0027] Figure 8 This is a three-dimensional structural diagram of the riveting support fixture of the present invention;

[0028] Figure 9 This is a schematic diagram of the structure of the second support block of the present invention;

[0029] Figure 10 This is a schematic diagram of the gear support column of the present invention;

[0030] Figure 11 This is a schematic diagram of the structure of the rolling section of the present invention;

[0031] Figure 12 This is a schematic diagram of the elastic limiting part of the riveting mechanism of the present invention;

[0032] Figure 13 This is a schematic cross-sectional view of the assembly before riveting in Embodiment 2 of the riveting method of the present invention;

[0033] Figure 14 This is a schematic cross-sectional view of the assembly after riveting, according to Embodiment 2 of the riveting method of the present invention;

[0034] Figure 15 This is a schematic diagram illustrating the pull-out test principle of the riveted assembly of the present invention.

[0035] Explanation of symbols in the diagram:

[0036] 1. Assembly; 11. Component 1; 12. Component 2; 13. Thin-walled section; 101. Bearing; 102. Planar gear; 103. Inner ring; 104. Boss section;

[0037] 2. Riveting mechanism; 21. Rolling section; 211. Roller; 212. Roller seat; 213. Roller shaft; 22. Rolling drive section; 221. Drive motor; 222. Reducer; 23. Elastic limiting section; 231. First limiting plate; 232. Second limiting plate; 233. Elastic buffer section; 2331. Buffer spring; 2332. Buffer shaft; 24. Pressing plate;

[0038] 3. Riveting support fixture; 31. Assembled component pressure-bearing and limiting part; 311. Gear support column; 312. Through hole support structure; 313. Positioning column; 314. Gear limiting part; 315. Circumferential limiting hole; 32. First support block; 33. Second support block; 331. Groove positioning structure; 34. Horizontal moving part; 341. Moving slider; 342. Moving slide rail; 343. Z-shaped connecting plate; 344. Horizontal drive cylinder; 35. Anti-rotation support component; 36. Blocking block; 37. Horizontal limiting part; 371. Positioning cylinder; 372. Positioning block;

[0039] 4. Support mechanism; 41. Support frame; 42. Support platform;

[0040] 7. Feeding mechanism; 71. Feeding sensing and storage mechanism; 72. Feeding channel; 73. Feeding storage box;

[0041] 8. Supporting fixtures;

[0042] 9. Test the pressure head. Detailed Implementation

[0043] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following describes in further detail, with reference to the accompanying drawings and embodiments, a riveting assembly, a method for riveting thin-walled outward-facing assemblies, and a riveting device. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0044] Example 1

[0045] Please see Figure 1 The present invention firstly provides a riveting assembly, including component one 11 and component two 12. Component one 11 and component two 12 are connected in a cooperative manner. After component one 11 and component two 12 are riveted, a thin-walled portion 13 is provided on the outer periphery of the upper end of component one 11. The thin-walled portion 13 extends outward in the radial direction and is connected in a cooperative manner with component two 12.

[0046] Specifically, when riveting component 11 and component 2 12, a thin-walled outward-flaring riveting process is adopted, and the axial deformation of the thin-walled part 13 is less than 0.5mm, the radial deformation of the thin-walled part 13 is less than 2mm, and the angle between the upper end face and the side end face of the thin-walled part 13 is 90°.

[0047] Example 2

[0048] For details, please refer to Figure 2 , Figure 3 The rotating assembly provided in this embodiment is a bearing and gear assembly. The assembly 1 is formed by riveting a bearing 101 and a planar gear 102. The bearing 101 and the planar gear 102 on the assembly 1 are connected in a mating manner. The bearing 101 is provided with an inner ring 103, and the planar gear 102 is provided with a boss portion 104. The inner ring 103 of the bearing 101 and the boss portion 104 of the planar gear 102 are riveted in a mating manner.

[0049] The bearing and gear assembly provided by this invention is an assembly for electric vehicles, but it can also be applied to other equipment.

[0050] Specifically, such as Figure 3 As shown, the boss portion 104 of the planar gear 102 is provided on the upper end face of the planar gear 102 and is arranged around the outer periphery of the upper end face. The planar gear 102 is connected to the inner ring 103 of the bearing 101 through the boss portion 104. The contact part between the boss portion 104 of the planar gear 102 and the inner ring 103 of the bearing 101 is riveted by a riveting device to make the assembly firmly riveted.

[0051] Furthermore, in the bearing and gear assembly, the inner ring size of the bearing 101 is no greater than 30mm, and the axial deformation of the riveting of the boss portion 104 of the planar gear 102 is less than 0.5mm.

[0052] In this embodiment, the axial dimension of the boss portion 104 of the planar gear 102 before riveting is 0.65mm, and the axial dimension after riveting is 0.15mm. The angle between the upper end face and the side end face of the planar gear 102 is 90°.

[0053] In this embodiment, the material of assembly 1 is powder alloy. Due to its high hardness and difficulty in plastic deformation, it is necessary to use a high-precision riveting device and riveting method for riveting processing.

[0054] Example 3

[0055] like Figure 4 , Figure 5 As shown, the present invention also provides a riveting device for assemblies, which performs riveting processing on riveted assemblies. The riveting device includes a riveting mechanism 2 and a riveting support fixture 3. The riveting device is used for riveting bearing and gear assemblies. The riveting mechanism 2 includes a rolling part 21 and a rolling drive part 22 for driving the rolling part 21. An axial moving part and a positioning part are connected to the rolling part 21. The riveting support fixture 3 is used to support the assembly 1. The riveting support fixture 3 is provided with an assembly pressure-bearing limit part 31 that cooperates with the riveting mechanism 2.

[0056] This invention provides stable support for the riveting assembly using a riveting support fixture 3. The pressure-bearing limiting part 31 of the assembly provides stable support for the assembly 1, preventing circumferential movement and ensuring the accuracy of the riveting process. The rolling drive part 22 drives the rolling part 21 to perform the riveting operation on the assembly 1, enabling precise riveting. While ensuring a firm riveting, the bearing 101 rotates smoothly, and the assembly 1 can withstand higher pull-out force in the axial direction. This not only simplifies the riveting process but also increases the riveting efficiency, achieving high-precision riveting processing of the assembly 1 and realizing the precise outer flange processing technology of the assembly 1.

[0057] Specifically, such as Figure 4 As shown, the riveting device also includes a support mechanism 4. The riveting mechanism 2 and the riveting support fixture 3 are all installed on the support mechanism 4. The support mechanism 4 serves as a support mechanism for each riveted structural component. The support mechanism 4 is provided with a support frame 41 and a support platform 42. The support frame 41 is vertically arranged, and the support platform 42 is horizontally arranged and connected to the middle of the support frame 41 by a connector.

[0058] Furthermore, the support platform 42 is a horizontally arranged square plate structure, and the riveting support fixture 3 is installed on the support platform 42.

[0059] like Figures 6-8As shown, the riveting support fixture 3 is provided with a support part, and the assembly pressure limiting part 31 is provided on the support part. The support part is used to support and fix the assembly pressure limiting part 31, and the assembly pressure limiting part 31 is used to support and limit the bearing gear assembly to be riveted, so as to cooperate with the riveting mechanism to perform riveting operation.

[0060] Specifically, the support includes a first support block 32 and a second support block 33. The first support block 32 is fixedly disposed on the upper part of the second support block 33. The assembly pressure-bearing limiting part 31 is disposed on the first support block 32. The lower part of the second support block 33 is connected to a horizontal moving part 34, which can adjust the horizontal position of the support on the support platform 42.

[0061] like Figure 8 , Figure 9 As shown, the first support block 32 is a square plate structure with a through-hole in the middle, the cross-section of which is circular. The upper end of the second support block 33 is in contact with the lower end of the first support block 32, and the upper surface of the second support block 33 is provided with a groove structure, the middle of which is provided with a connecting hole. The connecting hole and the through-hole are arranged vertically and vertically, forming a consistent through-hole structure. The lower surface of the second support block 33 is connected to the horizontal moving part 34.

[0062] The pressure-bearing limiting part 31 of the assembly is provided with a positioning snap-fit ​​part that is adapted to the bearing gear assembly, and a circumferential limiting part is connected to the pressure-bearing limiting part of the assembly to limit the circumferential displacement of the pressure-bearing limiting part of the assembly.

[0063] Specifically, such as Figure 10 As shown, the pressure-bearing limiting part 31 of the assembly includes a gear support column 311. The gear support column 311 is a cylindrical hollow structure. The bearing gear assembly is positioned and supported by the gear support column 311. The gear support column 311 is vertically arranged and has a through hole support structure 312 that runs vertically through the center of the gear support column 311. The upper end of the through hole support structure 312 protrudes out. A positioning column 313 is arranged inside the through hole support structure 312. The positioning column 313 is vertically arranged and its upper end is connected to the inner side of the planar gear 102 for positioning the assembly 1.

[0064] The gear support column 311 is disposed in the limiting hole of the first support block 32, and the support part forms a stable support structure for the gear support column 311. The lower end face of the gear support column 311 is connected to the upper end of the second support block 33.

[0065] The upper end face of the gear support column 311 is provided with a gear limiting part 314 that meshes with the lower end face of the planar gear 102 in the assembly 1. The upper end face of the through hole support structure 312 is higher than the gear limiting part 314. The gear limiting part 314 is evenly distributed along the upper outer periphery of the gear support column 311, and the gear limiting part 314 is located on the outer periphery of the through hole support structure 312.

[0066] Furthermore, the lower side of the gear support column 311 is provided with a circumferential limiting hole 315 arranged radially therein. A limiting post can be installed in the circumferential limiting hole 315 to circumferentially limit the gear support column 311 and prevent the pressure-bearing limiting part 31 of the assembly from rotating when it is being supported.

[0067] Furthermore, such as Figures 6-8 As shown, the lower end of the gear support column 311 is connected to an anti-rotation support 35. The anti-rotation support 35 is set in the groove structure of the second support block 33, thereby circumferentially limiting the pressure limiting part 31 of the assembly to prevent it from displacing and affecting the machining accuracy of the bearing gear assembly during riveting.

[0068] Specifically, the horizontal moving part 34 includes a sliding slider 341 and a sliding rail 342. There are two sliding sliders 341 and two sliding rails 342, and the sliding sliders 341 and the sliding rails 342 are slidably connected. The two sliding sliders are respectively fixedly installed on the lower sides of the second support block 33, and the two sliding rails 342 are arranged along the length of the support platform 42.

[0069] Furthermore, the side end of the second support block 33 is connected to the horizontal moving drive unit through the Z-shaped connecting plate 343. The horizontal moving drive unit drives the support unit to move along the direction of the moving slide rail 342, thereby facilitating the adjustment of the position of the bearing gear assembly on the support unit and facilitating the riveting mechanism 2 to perform riveting operations.

[0070] Specifically, in this embodiment, the horizontal movement drive unit is provided with a horizontal drive cylinder 344. The horizontal drive cylinder 344 is horizontally arranged and arranged along the length direction of the moving slide rail 342. The cylinder rod at the end of the horizontal drive cylinder 344 is fixedly connected to the Z-shaped connecting plate 343. The horizontal drive cylinder 344 is mounted on the support platform 42 through a cylinder support seat.

[0071] Furthermore, in a preferred embodiment of the present invention, a blocking block 36 is provided at the end of the movable slide rail 342. The blocking block 36 is vertically arranged on the support platform 42, and the horizontal displacement of the support is restricted by the blocking block 36.

[0072] Furthermore, in a preferred embodiment of the present invention, a horizontal limiting part 37 is connected to the support platform 42, which limits the horizontal position of the support part and positions the riveting position of the assembly pressure limiting part 31.

[0073] Specifically, such as Figure 8 As shown, the horizontal limiting part 37 is provided on the side of the support part, and in the vertical direction, the horizontal limiting part 37 is provided at the center of the lower side of the riveting mechanism 2. So when the horizontal limiting part 37 horizontally limits the support part, it precisely positions the assembly pressure limiting part 31 and the assembly 1 located on the support part at the lower center of the riveting mechanism 2, thereby enabling precise riveting and preventing the processing position from shifting.

[0074] The horizontal limiting part 37 includes a positioning cylinder 371 and a positioning block 372. The positioning block 372 is located at the end of the cylinder rod of the positioning cylinder 371. The positioning block 372 has a conical block structure. The side end face of the second support block 33 is provided with a groove positioning structure 331. The groove positioning structure 331 is adapted to the positioning block 372 and the positioning block 372 is engaged in the groove positioning structure 331 of the second support block 33. Thus, when the horizontal moving part 37 moves the support part into place, the positioning block 372 of the horizontal limiting part 37 engages with the groove positioning structure 331 to limit and fix the second support block 33. After the assembly 1 is in place, it is convenient to carry out subsequent riveting work.

[0075] like Figures 4-7 As shown, the riveting mechanism 2 is located above the support platform 42 and in the vertical direction. The riveting mechanism 2 is located on the upper part of the riveting support fixture 3 and is connected to the support frame 41. After the bearing 101 and the planar gear 102 are loaded, the riveting support fixture 3 moves to the lower part of the riveting mechanism 2 and the riveting mechanism 2 begins to rivet the assembly 1.

[0076] In this embodiment, the rolling section 21 is provided with a rolling body and a rolling shaft that can be riveted and rolled, and the rolling body is movably connected to the rolling shaft.

[0077] Specifically, such as Figure 11 As shown, the rolling section 21 includes two rollers 211, which are arranged adjacently and both are located inside the roller seat 212. The upper end of the roller seat 212 is connected to the rolling drive section 22. The rollers 211 are supported and connected by roller shafts 213, which are horizontally arranged. The rollers 211 are sleeved on the outer periphery of the roller shafts 213, and the roller shafts 213 support the rollers 211 to rotate and roll.

[0078] Furthermore, the roller shaft 213 has a robust structure, high rigidity, and is not easily deformed. A needle roller bearing and a thrust bearing are provided between the roller 211 and the roller shaft 213 to ensure that the roller 211 rotates smoothly on the roller shaft 213.

[0079] Furthermore, in this embodiment, the rolling drive unit 22 is hydraulically driven. According to the material characteristics of the assembly, the rolling drive unit 22 is positioned above the rolling part 21, and the rolling drive unit 22 drives the rolling part 21 to perform riveting work. The rolling drive unit 22 is equipped with a drive motor 221 and a reducer 222, which can provide precise rotation speed and riveting pressing speed of the rolling part 21.

[0080] The riveting mechanism 2 of the present invention has a large riveting force and a strong body rigidity. It can perform high-precision riveting processing according to the settings, and meet the high-precision processing requirements of bearing gear assemblies.

[0081] Furthermore, such as Figure 12 As shown, in this embodiment, the riveting mechanism 2 further includes an elastic limiting part 23, which is connected to the rolling part 21. The upper end of the elastic limiting part 23 is connected to the rolling drive part 22, and the lower end of the elastic limiting part 23 is connected to the bottom of the rolling part 21. The elastic limiting part 23 can extend and retract in the vertical direction. The elastic limiting part 23 serves as an axial buffer structure for the rolling part 21, facilitating the riveting operation of the rolling part 21.

[0082] Specifically, the elastic limiting part 23 includes a first limiting plate 231, a second limiting plate 232, and an elastic buffer part 233. The elastic buffer part 233 is disposed between the first limiting plate 231 and the second limiting plate 232. Both the first limiting plate 231 and the second limiting plate 232 are horizontally arranged plate-shaped structures with through holes in the middle. The first limiting plate 231 is disposed at the upper part and sleeved on the outer periphery of the roller seat 212. The second limiting plate 232 is disposed parallel to the first limiting plate 231 and is disposed at the lower part of the first limiting plate 231. The upper end of the elastic buffer part 233 is connected to the first limiting plate 231, and the lower end of the elastic buffer part 233 is connected to the second limiting plate 232. The second limiting plate 232 can move vertically in the axial direction under the action of the elastic buffer part 233.

[0083] The elastic buffer section 233 includes two elastic buffer units, which are respectively disposed on the left and right sides of the roller seat 212. Each elastic buffer unit is provided with a buffer spring 2331 and a buffer shaft 2332. The buffer shaft 2332 consists of a first buffer shaft and a second buffer shaft that is sleeved inside the first buffer shaft and can move up and down. The buffer spring 2331 is sleeved on the outer periphery of the buffer shaft 2332 and is end-limited by the limiting parts at the upper and lower ends. Thus, the buffer shaft 2332 can perform elastic extension and contraction movement under the action of the buffer spring 2331.

[0084] Furthermore, the lower end of the rolling section 21 is connected to a pressing section, which is provided with a pressing plate 24. The pressing plate 24 is located at the lower end of the second limiting plate 232 and is fixedly connected to the second limiting plate 232. The middle part of the pressing plate 24 is provided with a positioning hole that cooperates with and is positioned in conjunction with the riveting support fixture 3.

[0085] Thus, the present invention provides power through the rolling drive unit 22 to drive the rolling unit 21 to descend and perform riveting operation on the assembly 1 placed on the riveting support fixture 3. The pressure plate 24 at the lower end of the rolling unit 21 will first contact the first support block 32 of the support part of the riveting support fixture 3. Then the rolling drive unit 22 continues to provide power, and the elastic limiting part 23 is deformed under pressure. As the descending pressure increases, under the continuous deformation of the elastic limiting part 23, the rolling unit 21 of the riveting mechanism 2 contacts the assembly 1. The rolling unit 21 rotates around the assembly 1 to perform riveting, completing the riveting work of the bearing 101 and the planar gear 102 assembly. The riveting is efficient and stable, and the riveting efficiency is high.

[0086] In this embodiment, the riveting device also includes a control system. The control system is equipped with a PLC control unit and a control panel. The control panel is electrically connected to each device. The control system sets and controls the processing parameters of each riveting step through the control panel. This invention realizes automated riveting of assemblies through the control system, which is not only convenient to control, but also has high riveting efficiency.

[0087] Furthermore, in a preferred embodiment of the present invention, the riveting mechanism 2 is connected to a riveting pressure displacement monitoring mechanism and a material feeding sensing and storage mechanism, both of which are connected to the control system.

[0088] Specifically, the riveting pressure and displacement monitoring mechanism includes a pressure detection sensor and a displacement detection sensor, which, together with the control system, can realize real-time detection of pressure and displacement changes during the riveting process.

[0089] Furthermore, the riveting mechanism 2 is externally connected to a protective mechanism, which protects the internal riveting mechanism 2 and prevents external environmental interference with the riveting process. The protective mechanism is equipped with a safety door, which is connected to an execution switch. The execution switch is connected to the control system and intelligently controls the opening of the safety door. When the assembly 1 is riveted, the control system controls the safety door to open and load the riveted parts.

[0090] Furthermore, a lighting system is installed on the inner side of the protective structure to facilitate observation of the internal working process.

[0091] Furthermore, in a preferred embodiment of the present invention, a feeding mechanism 7 is fixedly connected to the lower side of the support platform 42. The feeding mechanism 7 is provided with a feeding sensing and storage mechanism 71, a feeding channel 72, and a feeding storage box 73. The feeding sensing and storage mechanism 71 is located at the end of the support platform 42, and the feeding channel 72 is inclinedly located at the lower part of the support platform 42. The upper end of the feeding channel 72 is located close to the end of the support platform 42, and the lower end of the feeding channel 72 is connected to the feeding storage box 73. The feeding mechanism 7 is used to feed the riveted bearing gear assembly.

[0092] Furthermore, the drive components such as motors and cylinders, as well as the structures not mentioned, provided in this invention are all adaptive structural designs based on the actual usage environment, which are readily available to those skilled in the art and will not be described in detail here.

[0093] Furthermore, the present invention also provides a method for riveting assemblies, specifically a method for riveting thin-walled outward-flange assemblies. The present invention utilizes a riveting device to perform riveting operations on rotary riveting assemblies.

[0094] Example 4

[0095] The riveting method provided in this embodiment is used for riveting bearing and gear assemblies. The bearing and gear riveting process provided by this invention can be understood in conjunction with the riveting device.

[0096] First, the planar gear 102 and bearing 101 in assembly 1 are sequentially loaded and placed on the riveting support fixture 3. The riveting support fixture 3 pre-presses and positions the assembly 1. Then, the rolling drive unit 22 provides power to drive the rolling part 21 to descend and perform riveting operation on the assembly 1 placed on the riveting support fixture 3. The pressure plate 24 at the lower end of the rolling part 21 will first contact the support part of the riveting support fixture 3. Then, the rolling drive unit 22 continues to provide power, and the elastic limiting part 23 is deformed under pressure. As the descending pressure increases, under the continuous deformation of the elastic limiting part 23, the rolling part 21 of the riveting mechanism 2 contacts the assembly 1. The rolling part 21 rotates around the assembly 1 to rivet, completing the riveting of the bearing 101 and the planar gear 102 assembly.

[0097] Furthermore, the rolling drive unit 22 controls the rotation speed of the rolling unit 21 to be 240-260 tr / min, and the riveting pressing speed is controlled at 3.5-5.5 m / min.

[0098] In this embodiment, the rolling drive unit 22 controls the rotation speed of the rolling unit 21 to be 250 tr / min, and the riveting pressing speed is controlled at 5 m / min.

[0099] Example 5

[0100] Furthermore, the riveting method provided by this invention is not limited to riveting assembly 1 composed of bearings and gears, but can also rivet the thin-walled outward flanges of other assemblies, thereby forming a thin-walled outward flange riveting process. In this embodiment, the riveted assembly is as follows: Figure 13 , Figure 14 As shown, Figure 13 This is a cross-sectional view of the assembly before riveting. Figure 14 This is a cross-sectional view of the assembled components after riveting.

[0101] In this embodiment, the thin-walled assembly is made using powder metallurgy and has a high hardness, exceeding HRC6.

[0102] The riveting process for thin-walled outward flanges of assemblies has high requirements due to the small riveting diameter, the special material of the thin-walled workpiece, the small amount of deformation allowed for riveting, and the requirement for high pull-out force for the riveted assemblies.

[0103] Furthermore, in this embodiment, the height of the riveted thin-walled flange is 0.5 mm, and the radial dimension is 2 mm.

[0104] First, the assemblies are sequentially placed on the riveting support fixture 3. The riveting support fixture 3 pre-presses and positions the assemblies. Then, the rolling drive unit 22 provides power to drive the rolling part 21 to descend and perform riveting operation on the assemblies placed on the riveting support fixture 3. The pressure plate 24 at the lower end of the rolling part 21 will first contact the support part of the riveting support fixture 3. Then, the rolling drive unit 22 continues to provide power, and the elastic limiting part 23 is deformed under pressure. As the descending pressure increases, under the continuous deformation of the elastic limiting part 23, the rolling part 21 of the riveting mechanism 2 contacts the assemblies. The rolling part 21 rotates around the assemblies to perform riveting, completing the thin-walled flange riveting of the assemblies.

[0105] The parts of the riveting method not mentioned in this embodiment are the same as those in Embodiment 4.

[0106] The pull-out strength of the riveted assembly is verified by conducting a strength test on the assembly.

[0107] A number of riveted test pieces were randomly selected, and their pull-out force was tested. Figure 15 As shown, the riveted assemblies are tested sequentially using a testing machine. Assemblies 1 are placed on the support fixture 8 of the testing machine, the testing machine is started, the test head 9 of the testing machine moves down and contacts the upper end of the planar gear, and the force is applied to observe the force value of the planar gear disengaging from the bearing.

[0108] Test results show that this riveting process can withstand pull-out forces exceeding 18,000 N, and the test values ​​are stable. Therefore, this riveting process ensures a secure riveting connection while allowing smooth bearing rotation, and enables the assembly to withstand higher pull-out forces in the axial direction.

[0109] The riveting device and riveting method provided by this invention can achieve precise riveting. While ensuring a firm riveting, the bearing rotates smoothly, and the assembly 1 can withstand higher pull-out force in the axial direction. This invention uses the riveting support fixture 3 to stably support the bearing gear assembly, and the assembly pressure limiting part 31 can stably support the assembly 1, preventing circumferential movement and ensuring the accuracy of the riveting process. The rolling drive part 22 drives the rolling part 21 to perform the riveting operation on the assembly 1. Not only is the riveting process simple, but the riveting efficiency is also high, achieving high-precision riveting processing of the bearing plane and gear assembly.

[0110] In the description of this invention, it should be understood that terms such as “length”, “width”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0111] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0112] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A riveting device for assemblies, comprising a riveting mechanism and a riveting support fixture, characterized in that, The riveting device is used to rivet a riveting assembly, which includes component one and component two. Component one and component two are connected and riveted together. After component one and component two are riveted together, a thin-walled portion is provided on the outer periphery of the upper end of component one. The thin-walled portion extends outward in the radial direction and is connected to component two. The axial deformation of the thin-walled portion is less than 0.5 mm, the radial deformation of the thin-walled portion is less than 2 mm, and the angle between the upper end face and the side end face of the thin-walled portion is 90°. The riveting mechanism includes a rolling section and a rolling drive section for driving the rolling section. An axial moving section and a positioning section are connected to the rolling section. The riveting support fixture is used to support the riveting assembly. The riveting support fixture is provided with an assembly pressure-bearing and limiting section that cooperates with the riveting mechanism. The riveting support fixture includes a support part, and the assembly pressure-bearing and limiting part is disposed on the support part. The assembly pressure-bearing and limiting part is provided with a positioning and locking part adapted to the riveting assembly, and a circumferential limiting part is connected to the assembly pressure-bearing and limiting part to limit the circumferential displacement of the assembly pressure-bearing and limiting part. The positioning and locking part includes a gear support column, and the gear support column has a through hole support structure with vertical penetration at its internal center. A positioning column is disposed inside the through hole support structure. The upper end face of the gear support column is provided with a gear limiting part that meshes with the lower end face of the planar gear in the assembly. The lower side of the gear support column is provided with a circumferential limiting hole arranged radially therein, and a limiting column is disposed in the circumferential limiting hole to limit the circumferential movement of the gear support column. An anti-rotation support member is connected to the lower end of the gear support column.

2. The assembly riveting device according to claim 1, characterized in that, The rolling section is provided with a rolling body and a rolling shaft for riveting and rolling, and the rolling body is movably connected to the rolling shaft.

3. A riveting device for assemblies according to claim 1 or 2, characterized in that, The riveting mechanism includes an elastic limiting part, which is connected to the rolling part. The upper end of the elastic limiting part is connected to the rolling drive part, and the lower end of the elastic limiting part is connected to the bottom of the rolling part. The elastic limiting part can extend and retract in the vertical direction.

4. The assembly riveting device according to claim 1, characterized in that, The lower end of the rolling section is connected to a pressing section, which is provided with a pressing plate. The pressing plate is provided with positioning holes that cooperate with and are positioned by the riveting support fixture.

5. The assembly riveting device according to claim 1, characterized in that, A horizontally movable part is connected to the support part, and a horizontally limiting part is provided on the side of the support part.

6. The assembly riveting device according to claim 1, characterized in that, It also includes a control system, which is connected to a riveting pressure displacement monitoring mechanism and a material feeding induction and storage mechanism.

7. A method for riveting thin-walled outward-facing components, characterized in that, The riveting operation of the spin-riveting assembly is performed by using the assembly riveting device as described in any one of claims 1-6; First, components one and two of the assembly are sequentially loaded and placed on the riveting support fixture. The riveting support fixture pre-presses and positions the assembly. Then, the rolling drive unit provides power to drive the rolling part to descend and perform riveting operation on the assembly placed on the riveting support fixture. The pressing part at the lower end of the rolling part will first contact the support part of the riveting support fixture. Then, the rolling drive unit continues to provide power, and the elastic limiting part is deformed under pressure. As the descending pressure increases, under the continuous deformation of the elastic limiting part, the rolling part of the riveting mechanism contacts the assembly. The rolling part rotates around the assembly to rivet, completing the riveting of the bearing and the planar gear assembly. The rolling drive unit controls the rotation speed of the rolling part to be 240-260 tr / min, and the riveting pressing speed is controlled at 3.5-5.5 m / min.

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