Punching-riveting closing-up fixing method for joint component and knuckle bearing

Abstract

The invention relates to a punching and riveting closing-up fixing method for a joint part and a joint bearing, which comprises the following steps: S1, punching and riveting device design: designing a punching and riveting device according to the joint part and the joint bearing, the punching and riveting device comprises a punching and riveting clamp and a punch, and the punching and riveting clamp comprises a bottom plate, a guide plate, a positioning block and a fixing mechanism; the knuckle bearing is assembled in a bearing mounting hole of the connector component, the knuckle bearing and the bearing mounting hole are placed on a positioning block together, and a positioning cylinder is sleeved with an inner ring of the knuckle bearing; the connector component is pressed and fixed on the positioning block through the fixing mechanism; all the punches are driven by a punching mechanism to synchronously move downwards together, punching heads of the punches punch a punching riveting closing opening in the position, located on the periphery of the bearing mounting hole, of the end face of the connector component, so that the connector component deforms and protrudes towards the interior of the bearing mounting hole, and the punches stop moving when the positioning working face abuts against the positioning stopping face; and taking down the joint part and the knuckle bearing, overturning one surface, and punching a punching and riveting closing opening in the other end surface of the joint part.

Description

Technical Field

[0001] The invention relates to the technical field of punching and riveting connection, and in particular to a punching and riveting fixing method for a joint component and a spherical bearing. Background Art

[0002] The aircraft engine has a joint component for connecting the power control lever connecting rod and the reverse propeller bleed connecting rod to achieve power regulation. After the joint component is processed, it is necessary to fix the spherical bearing in the bearing mounting hole in the joint component during assembly. See the attached Figure 1 As shown. The current assembly method of spherical bearings generally uses interference fit, threaded fixation or other fixings to achieve a locking and fixing connection between the spherical bearing and the joint component to prevent the spherical bearing from falling out. The above methods require additional processing operations (tapping internal and external threads or heating and cooling) on ​​the joint component and the spherical bearing, which often affects the structure and performance of the joint component and is complicated to operate; and when fixings are provided on the end faces of the joint component (the faces located at both ends of the bearing mounting hole), the overall shape of the joint component will be affected, thereby affecting the actual installation and use of the joint component. Therefore, how to stably fix the spherical bearing and the joint component and avoid affecting the structure and overall shape of the joint component is a problem that needs to be solved urgently. Summary of the invention

[0003] In view of the shortcomings of the prior art mentioned above, the technical problem to be solved by the present invention is to provide a method for punching and riveting a joint component and a spherical bearing, in which the joint component and the spherical bearing are locked and fixed by punching and riveting, and the punching and riveting depth is controllable, the rivet holes are uniform, and the connection is stable and reliable.

[0004] To achieve the above object, the present invention provides a method for fixing a joint component and a spherical bearing by riveting, comprising the following steps:

[0005] S1. Design of punching and riveting device: A punching and riveting device is designed according to the joint component and the spherical bearing. The punching and riveting device includes a punching and riveting fixture and a punch. The punching and riveting fixture includes a base plate, a guide plate, a positioning block and a fixing mechanism. The positioning block is fixed to the base plate and is used to place the joint component and the spherical bearing. The positioning block includes a positioning cylinder for inserting into the inner ring of the spherical bearing. The diameter of the positioning cylinder is the same as the inner diameter of the inner ring of the spherical bearing. The guide plate is fixed to the base plate and is located above the base plate. The guide plate is provided with a plurality of guide through holes uniformly arranged in an annular direction around the central axis of the positioning cylinder, and the upper ends of the guide through holes are provided with positioning stop surfaces. The central axis of the guide through hole is parallel to the central axis of the positioning cylinder. The fixing mechanism can fix the joint component on the positioning block. The punch is installed in the guide through hole, including a guide rod matched with the guide through hole, a positioning working surface fixedly arranged on the guide rod and located above the positioning stop surface, and a punch fixed to the bottom of the guide rod. The guide rod can move axially in the guide through hole.

[0006] S2. Punching and riveting:

[0007] S21, assembling the spherical bearing in the bearing mounting hole of the joint component and placing them together on the positioning block, wherein the inner ring of the spherical bearing is sleeved on the positioning cylinder; and using a fixing mechanism to press and fix the joint component on the positioning block;

[0008] S22, driving all punches to move downward synchronously, and the punch head of the punch punches out a rivet closing at the end surface of the joint component at a position around the bearing mounting hole, so that the joint component is deformed and protrudes toward the bearing mounting hole, and the punch stops moving when the positioning working surface abuts against the positioning stop surface;

[0009] S23, remove the joint component and the spherical bearing, turn one side over, and punch out a riveted opening on the other end face of the joint component in the same manner as steps S21 to S22.

[0010] Furthermore, in the step S1, the punch gradually becomes sharper from top to bottom, and the side surface of the punch is surrounded by an inclined plane and a conical surface. In the step S2, the conical surface of the punch faces the spherical bearing during punching.

[0011] Furthermore, in step S1, the bottom of the punch is a spherical surface, and the upper side of the spherical surface is connected to the lower side of the inclined plane and the conical surface respectively.

[0012] Furthermore, in step S1, the positioning block includes an angle positioning pin. In step S2, when the joint component and the spherical bearing are installed on the positioning block, the joint component abuts against the angle positioning pin to circumferentially position the joint component so that the positions of the punching and riveting ends on both side end faces remain relative.

[0013] Furthermore, in the step S1, the positioning block is provided with a first placement surface and a second placement surface, the first placement surface is used for placing the joint component, and the second placement surface is used for placing the spherical bearing.

[0014] Furthermore, in step S1, the fixing mechanism of the punching and riveting fixture includes a connecting column fixed to the base plate, a pressure plate sleeved on the connecting column, and a locking nut screwed on the connecting column, the pressure plate can move up and down along the connecting column, and the locking nut is used to press against the pressure plate so that the pressure plate can be pressed on the joint component placed on the positioning block.

[0015] Furthermore, in the step S1, the pressing plate is provided with a strip groove, and the pressing plate is installed on the connecting column through the strip groove, and can move along the radial direction of the positioning cylinder of the positioning block through the strip groove.

[0016] Furthermore, in the step S1, the fixing mechanism of the punching and riveting fixture further comprises an adjusting support column whose lower end is screwed to the bottom plate, and the bottom surface of the pressing plate abuts against the upper end of the adjusting support column.

[0017] Furthermore, in the step S1, the punching and riveting fixture further comprises a column detachably fixed to the base plate, the column is multiple and evenly arranged in a circumferential direction around the central axis of the positioning cylinder, and the guide plate is detachably fixedly connected to the column.

[0018] Furthermore, it also includes: S3, part disengagement test: after the punching and riveting is completed, a disengagement test is performed on both end surfaces of the joint component respectively, and an axial force is applied to the spherical bearing in the joint component to ensure that the spherical bearing does not disengage.

[0019] As described above, the punching and riveting closing and fixing method according to the present invention has the following beneficial effects:

[0020] By means of riveting, multiple riveted ends are evenly punched out on both end faces of the joint component at the same time, causing local deformation around the bearing mounting hole, protruding inward and pressing the spherical bearing, ensuring a stable and reliable connection between the joint component and the spherical bearing. There is no need to perform operations such as tapping or heating interference fit on the joint component and the spherical bearing to avoid affecting the structure and performance of the parts, and there is no need to set additional fixings to affect the overall appearance of the parts, thereby avoiding the installation and use of the parts. The riveted ends on both end faces of the joint component are uniform and stable, with controllable depth, and can ensure that the positions of the riveted ends on the two end faces are consistent and relative. The riveting process is easy to operate, with reliable quality, and can be promoted and applied to similar parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the connection between the joint component and the spherical bearing in the present invention.

[0022] Figure 2 for Figure 1 AA section view in.

[0023] Figure 3 for Figure 2 Enlarged view of circle B in .

[0024] Figure 4 It is a schematic diagram of the structure of the punching and riveting fixture in the present invention.

[0025] Figure 5 It is a top view of the punching and riveting fixture in the present invention.

[0026] Figure 6 for Figure 5 CC section view in.

[0027] Figure 7 It is a schematic diagram of the installation of the joint component and the spherical bearing on the positioning block in the present invention.

[0028] Figure 8 It is a schematic structural diagram of the pressing plate in the present invention.

[0029] Fig. 9 It is a schematic diagram of the structure of the punch in the present invention.

[0030] Fig.10 It is a schematic diagram of the structure of the punch in the present invention.

[0031] Description of Figure Numbers

[0032] 1 Connector parts

[0033] 2 Spherical plain bearings

[0034] 3. Punch and rivet

[0035] 4 Bottom plate

[0036] 5 Guide plate

[0037] 51 Guide vias

[0038] 52 Positioning stop

[0039] 6 Positioning block

[0040] 61 Positioning cylinder

[0041] 62 Angle Dowel Pin

[0042] 63 First placement surface

[0043] 64 Second placement surface

[0044] 7 Fixing mechanism

[0045] 71 Pressure Plate

[0046] 711 Strip Slot

[0047] 72 Connecting column

[0048] 73 Lock nut

[0049] 74 Adjusting the support column

[0050] 8 columns

[0051] 9 punches

[0052] 91 Guide rod

[0053] 92 Punch

[0054] 921 Conical surface

[0055] 922 Inclined plane

[0056] 923 Spherical surface

[0057] 93 Positioning work surface DETAILED DESCRIPTION

[0058] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0059] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0060] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0061] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] like Figures 1 to 10 As shown, the present invention provides a method for fixing a joint component and a joint shaft by riveting, comprising the following steps:

[0063] S1. Design of punching and riveting device: A punching and riveting device is designed according to the joint component 1 and the spherical bearing 2. The punching and riveting device includes a punching and riveting fixture and a punch 9. The punching and riveting fixture includes a base plate 4, a guide plate 5, a positioning block 6 and a fixing mechanism 7. The positioning block 6 is fixed to the base plate 4 and is used to place the joint component 1 and the spherical bearing 2. The positioning block 6 includes a positioning cylinder 61 for inserting into the inner ring of the spherical bearing 2. The diameter of the positioning cylinder 61 is the same as the inner diameter of the inner ring of the spherical bearing 2. The guide plate 5 is fixed to the base plate 4 and is located above the base plate 4. The guide plate 5 is provided with a plurality of guide through holes 51 evenly arranged in an annular direction around the central axis of the positioning cylinder 61. , and a positioning stop surface 52 is provided at the upper end of the guide through hole 51, the central axis of the guide through hole 51 is parallel to the central axis of the positioning cylinder 61, and the fixing mechanism 7 can fix the joint component 1 on the positioning block 6; the punch 9 is installed in the guide through hole 51, including a guide rod 91 matched with the guide through hole 51, a positioning working surface 93 fixedly arranged on the guide rod 91 and located above the positioning stop surface 52, and a punch 92 fixed to the bottom of the guide rod 91; the guide rod 91 of the punch 9 can move axially up and down in the guide through hole 51, and the positioning working surface 93 can be against the positioning stop surface 52 when moving downward.

[0064] In this embodiment, if Fig. 9 and Fig.10 As shown, as a preferred design, the punch 92 gradually tapers from top to bottom, and the side of the punch 92 is surrounded by an inclined plane 922 and a conical surface 921, wherein the angle between the inclined plane 922 and the central axis of the guide rod 91 of the punch 9 is preferably about 15°, and the cone angle of the conical surface 921 is preferably about 90°. The bottom of the punch 92 is a spherical surface 923, the upper side of the spherical surface 923 is connected to the lower side of the inclined plane 922 and the conical surface 921, respectively, and preferably tangent to each other, the radius SR of the spherical surface 923 is preferably 0.5, and the spherical surface 923 at the bottom can improve the durability of the punch 92.

[0065] In this embodiment, if Figure 5 , Figure 6and Fig. 9 As shown, as a preferred design, the number of guide holes 51 in the punching and riveting fixture is 6, and each guide hole 51 is provided with a punch 9. The punch 9 is provided with a circle of baffles on the outer peripheral surface of the guide rod 91, and the lower end surface of the baffle constitutes a positioning working surface 93. The upper end of the guide hole 51 is preferably provided with an R1 chamfer, and the R1 chamfer is larger than the round chamfer between the guide rod 91 and the positioning working surface 93, so as to avoid interference between the positioning working surface 93 and the positioning stop surface 52. In other embodiments, the punch 9 and the guide hole 51 can also be selected in other appropriate numbers as needed.

[0066] In this embodiment, if Figure 6 and Figure 7 As shown, as a preferred design, the positioning block 6 is provided with a first placement surface 63 and a second placement surface 64. The first placement surface 63 is used to place the joint component 1, and preferably the first placement surface 63 is perpendicular to the central axis of the positioning cylinder 61, and the end surface of the joint component 1 is kept in contact with the first placement surface 63. The second placement surface 64 is used to place the spherical bearing 2, and preferably the second placement surface 64 is perpendicular to the central axis of the positioning cylinder 61, and the outer ring end surface of the spherical bearing 2 is kept in contact with the second placement surface 64. The spacing between the second placement surface 64 and the first placement surface 63 is set according to the end surface conditions of the joint component 1 and the spherical bearing 2 when they are assembled. For example, in this embodiment, the outer ring end surface of the spherical bearing 2 is sunken into the end surface of the joint component 1 by a certain distance, and correspondingly, the second placement surface 64 is higher than the first placement surface 63. Furthermore, the positioning block 6 includes an angle positioning pin 62, which is used for circumferential angle positioning of the joint component 1 when it is placed. Specifically, when the joint component 1 and the spherical bearing 2 are installed on the positioning block 6, the side of the joint component 1 is abutted against the angle positioning pin 62 to perform circumferential positioning on the joint component 1.

[0067] In this embodiment, if Figure 6 and Figure 7As shown, as a preferred design, the fixing mechanism 7 of the punching and riveting fixture includes a connecting column 72 fixed to the bottom plate 4, a pressing plate 71 sleeved on the connecting column 72, and a locking nut 73 screwed on the connecting column 72, the pressing plate 71 can move up and down along the connecting column 72, and the locking nut 73 is used to press against the pressing plate 71, so that the pressing plate 71 can be pressed on the joint component 1 placed on the positioning block 6, thereby fixing the joint component 1. The pressing plate 71 is provided with a strip groove 711, and the pressing plate 71 is installed on the connecting column 72 through the strip groove 711, and can move along the radial direction of the positioning cylinder 61 of the positioning block 6 through the strip groove 711, so that the position of the pressing plate 71 pressing down on the end face of the joint component 1 can be adjusted. The fixing mechanism 7 also includes an adjustment support column 74 whose lower end is screwed to the bottom plate 4, the bottom surface of the pressing plate 71 abuts against the upper end of the adjustment support column 74, the adjustment support column 74 and the positioning block 6 are respectively located on opposite sides of the connecting column 72, and by adjusting the height of the adjustment support column 74, the height of the pressing plate 71 can be appropriately adjusted so that the front end of the pressing plate 71 can be better pressed on the joint component 1 placed on the positioning block 6, and a groove with the same length extension direction as the strip groove 711 of the pressing plate 71 is provided on the bottom surface of the pressing plate 71, and the top end of the adjustment support column 74 is located in the strip groove 711. When the pressing plate 71 moves along the radial direction of the positioning cylinder 61 of the positioning block 6 through the strip groove 711, the top end of the adjustment support column 74 moves relatively in the groove, which can prevent the pressing plate 71 from being separated from the adjustment support column 74, and does not affect the radial movement of the pressing plate 71. Preferably, two or more fixing mechanisms 7 are provided, and are evenly distributed along the circumference of the positioning cylinder 61, so as to be evenly pressed on multiple different positions on the end surface of the joint component 1.

[0068] In this embodiment, if Figure 6 and Figure 7 As shown, as a preferred design, the punching and riveting fixture also includes a column 8 detachably fixed to the bottom plate 4. The column 8 can be directly screwed to the bottom plate 4 or fixedly installed to the bottom plate 4 by a nut. There are multiple columns 8, and they are evenly arranged along the circumferential direction around the central axis of the positioning cylinder 61. The guide plate 5 is also detachably fixedly connected to the column 8, and can be directly screwed or fixedly connected by a nut. The multiple columns 8 ensure that the guide plate 5 is stably connected to the bottom plate 4, and the two remain in a parallel state. In this way, the height of the column 8 can also be replaced or adjusted as needed to adjust the height difference between the guide plate 5 and the positioning block 6, thereby adjusting the descending height of the punch 9 during punching.

[0069] S2. Punching and riveting:

[0070] S21, assemble the spherical bearing 2 in the bearing mounting hole of the joint component 1, the fitting clearance between the two can be selected to be 0.003-0.01mm, and then place them together on the positioning block 6, wherein the inner ring of the spherical bearing 2 is sleeved on the positioning cylinder 61 to achieve radial positioning; use the fixing mechanism 7 to fix the joint component 1 on the positioning block 6. Specifically, when the punching and riveting device in this embodiment is used, the end face of the joint component 1 and the end face of the spherical bearing 2 are respectively placed on the first placement surface 63 and the second placement surface 64 of the positioning block 6, and keep them in contact with each other, and at the same time, the side of the joint component 1 is abutted against the angle positioning pin 62 to limit the circumferential position of the joint component 1, and then the pressure plates 71 of the two fixing mechanisms 7 are pressed against the upper end face of the joint component 1, so as to fix the joint component 1.

[0071] S22, drive all punches 9 to move downward synchronously, and the punch head 92 of the punch 9 punches out the punching and riveting closure 3 at the end surface of the joint component 1 at the position around the bearing mounting hole, so that the joint component 1 produces a deformed protrusion toward the bearing mounting hole, and the punch 9 stops moving when the positioning working surface 93 abuts against the positioning stop surface 52, thereby ensuring the stability of the depth of the punching and riveting closure 3, wherein the punching and riveting closure 3 is preferably 0.25mm. The downward movement and punching action of the punch 9 can be performed manually, and the punch 9 punches out the punching and riveting closure 3 by hammering. The punch 9 can also be connected to an existing stamping equipment, and the stamping equipment is used to realize the downward punching action.

[0072] Specifically, when the punching and riveting device in this embodiment is used, the six punches 9 move downward synchronously, and six punching and riveting openings 3 are punched out simultaneously around the bearing mounting hole. During punching, the conical surface 921 of the punch 92 faces the spherical bearing 2, and the inclined plane 922 faces the side away from the spherical bearing 2. The side of the punching and riveting opening 3 formed in this way close to the spherical bearing 2 is conical and protrudes inward, thereby making the joint component 1 locally deformed well, and the side of the punching and riveting opening 3 away from the spherical bearing 2 is an inclined plane.

[0073] S23, remove the joint component 1 and the spherical bearing 2, turn one side over, and punch out a punching and riveting closure 3 on the other end face of the joint component 1 in the same manner as steps S21 to S22. Preferably, when the punching and riveting device in this embodiment is used, after turning one side over, the end face of the joint component 1 with the punching and riveting closure 3 facing upward is installed on the positioning block 6, and the joint component 1 is circumferentially positioned by the angle positioning pin 62 during installation, so that the punching and riveting closures 3 punched on the lower end face are respectively located below the corresponding punch 92, so that the punching and riveting closures 3 on the two end faces remain relative.

[0074] Through two times of riveting, the joint component 1 and the joint shaft are stably fixedly connected.

[0075] S3. Parts disengagement test: After punching and riveting, disengagement tests are performed on both end faces of the joint component 1, and axial force is applied to the spherical bearing 2 in the joint component 1 to ensure that the spherical bearing 2 does not disengage. Specifically, the joint component 1 is installed in the test fixture through the positioning pin, and an axial force is applied to the spherical bearing 2, gradually loading from 0N to 981N, and the pressure is maintained for 30S to observe whether the bearing disengages. After completion, the reverse side is tested on the other end face.

[0076] The punching and riveting fixing method of the present invention has the following beneficial effects:

[0077] By means of riveting, a plurality of riveted closings 3 are evenly punched out on both end faces of the joint component 1 at the same time, so that local deformation occurs around the bearing mounting hole, protrudes inward and presses the spherical bearing 2, ensuring that the connection between the joint component 1 and the spherical bearing 2 is stable and reliable. There is no need to perform operations such as tapping or heating interference fit on the joint component 1 and the spherical bearing 2 to avoid affecting the structure and performance of the parts, and there is no need to set additional fixings to affect the overall appearance of the parts, thereby avoiding affecting the installation and use of the parts. The riveted closings 3 on the two end faces of the joint component 1 are uniform and stable, with controllable depth, and can ensure that the positions of the riveted closings 3 on the two end faces are consistent and relative. The riveting process is easy to operate, with reliable quality, and can be promoted and applied to similar parts.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for fixing a joint component and a spherical bearing by riveting, characterized in that: The following steps are involved: S1. Design of a punching and riveting device: A punching and riveting device is designed according to the joint component (1) and the spherical bearing (2). The punching and riveting device comprises a punching and riveting fixture and a punch (9). The punching and riveting fixture comprises a base plate (4), a guide plate (5), a positioning block (6) and a fixing mechanism (7). The positioning block (6) is fixed to the base plate (4) and is used to place the joint component (1) and the spherical bearing (2). The positioning block (6) comprises a positioning cylinder (61) for inserting into the inner ring of the spherical bearing (2). The diameter of the positioning cylinder (61) is the same as the inner diameter of the inner ring of the spherical bearing (2). The guide plate (5) is fixed to the base plate (4) and is located above the base plate (4). The guide plate (5) is provided with a plurality of positioning cylinders (61) arranged around the positioning cylinder (61). 1) a guide through hole (51) whose central axis is evenly arranged in an annular direction, and a positioning stop surface (52) is provided at the upper end of each guide through hole (51), the central axis of the guide through hole (51) is parallel to the central axis of the positioning cylinder (61), and the fixing mechanism (7) is capable of fixing the joint component (1) on the positioning block (6); the punch (9) is installed in the guide through hole (51), and comprises a guide rod (91) matched with the guide through hole (51), a positioning working surface (93) fixedly arranged on the guide rod (91) and located above the positioning stop surface (52), and a punch (92) fixed at the bottom of the guide rod (91), and the guide rod (91) is capable of axially moving in the guide through hole (51); S2. Punching and riveting: S21, assembling the spherical bearing (2) in the bearing mounting hole of the joint component (1), and placing them together on the positioning block (6), wherein the inner ring of the spherical bearing (2) is sleeved on the positioning cylinder (61); using the fixing mechanism (7) to press and fix the joint component (1) on the positioning block (6); S22, driving all the punches (9) to move downward synchronously, and the punch head (92) of the punch (9) punches out a riveting joint (3) at the end surface of the joint component (1) at a position around the bearing mounting hole, so that the joint component (1) is deformed and protrudes toward the bearing mounting hole, and the punch (9) stops moving when the positioning working surface (93) abuts against the positioning stop surface (52); S23, remove the joint component (1) and the spherical bearing (2), turn one side over, and in the same manner as steps S21 to S22, punch out a riveted joint (3) on the other end face of the joint component (1).

2. The method for fixing the joint component and the spherical plain bearing by riveting according to claim 1, characterized in that: In step S1, the punch (92) gradually becomes sharper from top to bottom, and the side surface of the punch (92) is formed by an inclined plane (922) and a conical surface (921). In step S2, when the punch (92) is punching, the conical surface (921) faces the spherical bearing (2).

3. The method for fixing the joint component and the spherical plain bearing by riveting according to claim 2 is characterized in that: In the step S1, the bottom of the punch (92) is a spherical surface (923), and the upper side of the spherical surface (923) is connected to the lower side of the inclined plane (922) and the conical surface (921) respectively.

4. The method for fixing a joint component and a spherical bearing by riveting and sealing according to claim 1, characterized in that: In step S1, the positioning block (6) includes an angle positioning pin (62). In step S2, when the joint component (1) and the spherical bearing (2) are mounted on the positioning block (6), the joint component (1) and the angle positioning pin (62) abut against each other, and the joint component (1) is circumferentially positioned so that the positions of the punching and riveting ends (3) on the end faces on both sides remain relative.

5. The method for fixing a joint component and a spherical bearing by riveting according to claim 1, characterized in that: In the step S1, the positioning block (6) is provided with a first placement surface (63) and a second placement surface (64), wherein the first placement surface (63) is used to place the joint component (1), and the second placement surface (64) is used to place the spherical bearing (2).

6. The method for fixing a joint component and a spherical bearing by riveting according to claim 1, characterized in that: In step S1, the fixing mechanism (7) of the punching and riveting fixture includes a connecting column (72) fixed to the base plate (4), a pressure plate (71) mounted on the connecting column (72), and a locking nut (73) screwed on the connecting column (72), wherein the pressure plate (71) can move up and down along the connecting column (72), and the locking nut (73) is used to press against the pressure plate (71) so that the pressure plate (71) can be pressed against the joint component (1) placed on the positioning block (6).

7. The method for fixing a joint component and a spherical bearing by riveting according to claim 6, characterized in that: In the step S1, the pressing plate (71) is provided with a strip groove (711), and the pressing plate (71) is installed on the connecting column (72) through the strip groove (711), and can move along the radial direction of the positioning cylinder (61) of the positioning block (6) through the strip groove (711).

8. The method for fixing a joint component and a spherical bearing by riveting according to claim 7, characterized in that: In the step S1, the fixing mechanism (7) of the punching and riveting fixture further comprises an adjusting support column (74) whose lower end is screwed to the bottom plate (4), and the bottom surface of the pressing plate (71) abuts against the upper end of the adjusting support column (74).

9. The method for fixing a joint component and a spherical bearing by riveting and sealing according to claim 1, characterized in that: In the step S1, the punching and riveting fixture further comprises a column (8) detachably fixed to the base plate (4), the column (8) being multiple and evenly arranged in a circumferential direction around the central axis of the positioning cylinder (61), and the guide plate (5) is detachably fixedly connected to the column (8).

10. The method for fixing a joint component and a spherical bearing by riveting according to claim 1, characterized in that: Also includes: S3. Parts disengagement test: After the punching and riveting is completed, a disengagement test is performed on both end surfaces of the joint component (1) to apply an axial force to the spherical bearing (2) in the joint component (1) to ensure that the spherical bearing (2) does not disengage.

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