Riveting device for titanium alloy rocker arm assembly

Abstract

The present invention discloses a riveting device for a titanium alloy rocker arm assembly, which relates to the technical field of riveting devices, and includes a mounting platform, a placing platform fixedly mounted on the mounting platform, and a riveting assembly; the riveting assembly is arranged directly above the placing platform, and the riveting assembly includes a riveting head and a driving device, a lower die assembly for fixing a rocker arm shaft is detachably mounted on the placing platform, and the driving device is used to drive the riveting head and apply a force to the short shaft of the rocker arm shaft for riveting; the lower die assembly includes a base, a cushion block, an adjustment assembly, and an anti-displacement assembly, and a limiting shaft hole with an open top is provided at the center of the base. The present invention can adjust the position of the cushion block in the limiting shaft hole by adjusting the assembly to change the hole depth of the limiting shaft hole, and then make the hole depth of the limiting shaft hole match the long axis of the rocker arm shaft, thereby avoiding the verticality of the rocker arm shaft and the rocker arm wall plate in the rocker arm assembly after riveting out of tolerance.

Description

Technical Field

[0001] The invention relates to the technical field of riveting, in particular to a riveting device for a titanium alloy rocker arm assembly. Background Art

[0002] The titanium alloy rocker arm assembly is formed by riveting a titanium alloy rocker arm and a high-temperature alloy rocker arm shaft. After riveting, the rocker arm shaft riveting part and the rocker arm wall plate are required to have no gap, no looseness, and no cracks. The verticality of the rocker arm shaft to the rocker arm wall plate is controlled within Φ0.1mm. By analyzing the riveting process of the parts, the following processing difficulties will occur during the processing: Due to the influence of the cumulative tolerance of the single-piece processing during the riveting process, when the size of the single piece is at the upper or lower limit, due to the thin-walled parts of the titanium alloy rocker arm, the thinnest wall thickness is only 1.2mm, and it is very easy to deform under the riveting pressure during the riveting process, resulting in the verticality of the rocker arm shaft to the rocker arm wall plate in the rocker arm assembly out of tolerance. Summary of the invention

[0003] The object of the present invention is to provide a riveting device for a titanium alloy rocker arm assembly to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0005] The present invention provides a riveting device for a titanium alloy rocker arm assembly, comprising a mounting table, a placing table and a riveting assembly fixedly assembled on the mounting table; the riveting assembly is arranged directly above the placing table, and the riveting assembly comprises a riveting head and a driving device, and is characterized in that a lower die assembly for fixing the rocker arm shaft is detachably mounted on the placing table, and the driving device is used to drive the riveting head and apply force to the short shaft of the rocker arm shaft for riveting; the lower die assembly comprises a base, a cushion block, an adjusting assembly and an anti-displacement assembly, a limiting shaft hole with an open top is provided at the center of the base, and the cushion block is installed in the limiting shaft hole through the adjusting assembly in a manner that it can slide along the axial direction of the limiting shaft hole, and the anti-displacement assembly is used to limit the movement of the cushion block during the riveting process.

[0006] Furthermore, the base includes a base body, the limiting shaft hole is vertically penetrated at the center position of the base body, and a sliding groove is horizontally arranged at the bottom of the base body, the sliding groove is connected with the limiting shaft hole and forms an inverted T-shaped structure, the base also includes a bottom plate, the bottom plate is detachably mounted on the bottom of the base body, and side plates are symmetrically arranged on the bottom plate and the base body at both ends of the sliding groove, and the side plates and the bottom plate enable the sliding groove to form a strip-shaped installation cavity for installing the adjustment component.

[0007] Further, the adjustment assembly includes a pair of adjustment blocks slidably adapted in the strip-shaped installation cavity, the pair of adjustment blocks are symmetrically distributed on both sides of the limiting shaft hole, wherein the first inclined surfaces are formed on the opposite sides of the pair of adjustment blocks, and the first inclined surfaces of the pair of adjustment blocks form an inverted eight-shaped shape, and the two sides of the bottom of the cushion block are respectively formed with second inclined surfaces adapted to the first inclined surfaces of the pair of adjustment blocks, and the second inclined surfaces of the cushion block are slidably matched with the first inclined surfaces of the corresponding adjustment blocks through a keyway structure;

[0008] The adjustment assembly also includes a bidirectional high-precision screw rotatably arranged in the strip-shaped mounting cavity, and a motor for driving the bidirectional high-precision screw to rotate. The bidirectional high-precision screw passes through a pair of the adjustment blocks and cooperates with a pair of the adjustment block threads. The two ends of the bidirectional high-precision screw are respectively rotatably connected to the two side plates.

[0009] Furthermore, the bottom of the base is also connected to a mounting substrate; the mounting substrate is mounted on the top of the placement table through a snap-fit ​​structure, and the top of the mounting substrate is also provided with a pair of vertical slots adapted to the side panels, and the bottoms of the two side panels extend downward and can be snapped into the pair of vertical slots to complete the connection between the mounting substrate and the base;

[0010] The anti-displacement assembly includes a rubber pad, a movable bar and a resistance bar, wherein the rubber pad is arranged between the mounting substrate and the base, a strip-shaped groove is arranged at the top of the bottom plate corresponding to the position of the strip-shaped mounting cavity, the movable bar is longitudinally slidably adapted in the strip-shaped groove, and two resistance bars are arranged at the bottom of the movable bar, and the bottom end of the resistance bar passes through the base and the rubber pad and resists the mounting substrate;

[0011] A first friction surface is arranged on the top of the movable strip, and a second friction surface is arranged on the bottom of the adjustment block corresponding to the position of the strip-shaped groove.

[0012] Furthermore, the anti-displacement assembly further comprises a rotary rod symmetrically arranged on both sides of the bidirectional high-precision screw rod, the rotary rod comprises a positive spiral portion and a reverse spiral portion connected to each other, and a rotating portion connecting the positive spiral portion and the reverse spiral portion at opposite ends, the two rotating portions of the rotary rod are respectively rotatably connected to a pair of side plates, and the positive spiral portion and the reverse spiral portion of the rotary rod respectively penetrate a pair of adjustment blocks;

[0013] One of the rotating parts of the rotary rod passes through the corresponding side plate and is fixedly connected to a rotating disk. A third friction surface is arranged on the outer peripheral surface of the rotating disk. A friction strip is arranged on the mounting base plate directly below the rotating disk. An arc groove matching the rotating disk is arranged on the top of the friction strip, and a fourth friction surface is arranged in the arc groove.

[0014] Furthermore, the base and the mounting substrate are both made of carbon-molybdenum steel, and the pad and the adjustment block are both made of powder metallurgy steel.

[0015] Furthermore, an epitaxial plate is slidably engaged with one side of the base, and the epitaxial plate has a placement surface parallel to the horizontal plane.

[0016] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0017] 1. The present invention can adjust the position of the cushion block in the limiting shaft hole by adjusting the assembly to change the hole depth of the limiting shaft hole, thereby making the hole depth of the limiting shaft hole match the long axis of the rocker arm shaft, thereby avoiding the verticality out of tolerance between the rocker arm shaft and the rocker arm wall plate in the riveted rear rocker arm assembly.

[0018] 2. The present invention can limit the movement of the cushion block during the riveting process through the anti-displacement component to prevent the cushion block from moving downward due to the pressure applied during the riveting process, thereby affecting the verticality of the rocker arm assembly.

[0019] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the lower mold assembly of the present invention;

[0023] Figure 3 It is a schematic diagram of the top view of the lower mold assembly of the present invention;

[0024] Figure 4 yes Figure 3 AA structural diagram;

[0025] Figure 5 yes Figure 4 Schematic diagram of the local structure at A;

[0026] Figure 6 This is a schematic diagram of the structure of the lower mold assembly of the present invention when it is disassembled from the first perspective;

[0027] Figure 7 2. It is a schematic structural diagram of the lower mold assembly of the present invention when it is disassembled from a second viewing angle;

[0028] Figure 8 This is a schematic diagram of the structure of the lower mold assembly of the present invention after the base is hidden;

[0029] Fig. 9It is a schematic structural diagram of the rocker arm assembly of the present invention in the first state when riveted;

[0030] Fig.10 It is a schematic diagram of the structure of the rocker arm assembly of the present invention in the second state when riveted;

[0031] Fig.11 It is a schematic diagram of the rocker arm shaft structure of the present invention;

[0032] Fig.12 It is a schematic diagram of the rocker arm structure of the present invention.

[0033] In the figure:

[0034] 1- rocker shaft; 11- long shaft; 12- wall plate; 13- short shaft;

[0035] 2- Rocker arm;

[0036] 3-mounting table; 31-riveting assembly; 311-riveting head; 312-driving device; 32-placing table;

[0037] 4-lower mold assembly; 41-base; 411-base; 412-sliding sink; 413-bottom plate; 414-side plate; 415-strip installation cavity; 42-limiting shaft hole; 43-pad; 431-second inclined surface; 44-adjustment assembly; 441-adjustment block; 442-first inclined surface; 443-bidirectional high-precision screw; 444-motor; 45-mounting base plate; 451-vertical slot;

[0038] 5-anti-displacement component; 51-rubber pad; 52-movable strip; 53-contact strip; 54-strip groove; 55-rotating rod; 551-positive spiral part; 552-reverse spiral part; 553-rotating part; 56-rotating disk; 57-friction strip;

[0039] 6-Epitaxy plate. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0041] See also Figure 1-Figure 12 The present invention provides a riveting device for a titanium alloy rocker arm assembly, which is used for riveting the titanium alloy rocker arm assembly.

[0042] Among them, Figure 10-12As shown, the rocker arm assembly includes a rocker arm shaft 1 and a rocker arm 2. The rocker arm shaft 1 includes a long shaft 11, a wall plate 12 and a short shaft 13 with a riveted hole. The rocker arm 2 is provided with a mounting hole.

[0043] like Figure 1 and Figure 2 As shown, the riveting device for the titanium alloy rocker arm assembly includes a mounting table 3, a placing table 32 fixedly mounted on the mounting table 3, and a riveting assembly 31; the riveting assembly 31 is arranged directly above the placing table 32, and the riveting assembly 31 includes a riveting head 311 and a driving device 312. A lower mold assembly 4 for fixing the rocker arm shaft 1 is detachably mounted on the placing table 32, and the driving device 312 is used to drive the riveting head 311 and apply force to the short shaft 13 of the rocker arm shaft 1 for riveting; the lower mold assembly 4 includes a base 41, and a limiting shaft hole 42 with an open top is opened in the center of the base 41. During parts processing, firstly, the long axis 11 of the rocker shaft 1 is inserted into the limiting axis hole 42, and then the mounting hole 21 of the rocker arm 2 is sleeved on the short axis 13 of the rocker shaft 1, and finally, the driving device 312 is started to make the rivet head 311 apply force to the short axis 13 of the rocker shaft 1, so as to complete the riveting of the rocker assembly. The above riveting process is a prior art and will not be elaborated in detail here.

[0044] In order to avoid the verticality deviation between the rocker arm shaft 1 and the rocker arm 2 wall plate 12 in the riveted rear rocker arm assembly, the following conditions need to be met through analysis of the processing process: the length of the major axis 11 of the rocker arm shaft 1 is equal to the depth of the limiting shaft hole 42.

[0045] Only when the above conditions are met, the base 41 can support the rocker arm shaft 1 and its wall plate 12 together, thereby preventing the wall plate 12 from warping up or bending down during the riveting process, and ensuring the verticality requirement of the rocker arm assembly;

[0046] The specific reasons are: Fig. 9 As shown, if the length of the long axis 11 of the rocker shaft 1 is less than the depth of the limiting shaft hole 42, at this time, the base 41 only supports the lower surface of the wall plate 12, so during the riveting process, the long axis 11 of the rocker shaft 1 will produce a displacement in the direction of the riveting force. Since the thinnest wall thickness of the wall plate 12 is only 1.2mm, the strength it can withstand is relatively low. When the long axis 11 is displaced downward, the wall plate 12 will be tilted upward;

[0047] like Fig.10As shown, if the length of the major axis 11 of the rocker shaft 1 is greater than the depth of the limiting shaft hole 42, at this time, the mold no longer supports the lower surface of the wall panel 12, and the base 41 only supports the bottom surface of the major axis 11 of the rocker shaft 1. Therefore, during the riveting process, since the thinnest wall thickness of the wall panel 12 is only 1.2 mm, the strength of the force it can withstand is relatively low. Under the action of the riveting force, the deformation of the short axis 13 will cause the wall panel 12 to bend downward.

[0048] In order to meet the above conditions, Figure 4 As shown, the lower die assembly 4 also includes a cushion block 43 and an adjustment assembly 44; the cushion block 43 is installed in the limiting shaft hole 42 through the adjustment assembly 44 in a manner that it can slide along the axial direction of the limiting shaft hole 42. When in use, the staff can adjust the position of the cushion block 43 in the limiting shaft hole 42 through the adjustment assembly 44 to change the hole depth of the limiting shaft hole 42, thereby making the hole depth of the limiting shaft hole 42 match the long axis 11 of the rocker arm shaft 1, thereby avoiding the verticality of the rocker arm shaft 1 and the rocker arm 2 wall plate 12 in the riveted rear rocker arm assembly from being out of tolerance.

[0049] Considering that the pressure applied during the riveting process may cause the pad 43 to move downward and affect the verticality of the rocker assembly, the lower die assembly 4 also includes an anti-displacement assembly 5 for limiting the movement of the pad 43 during the riveting process.

[0050] In order to facilitate the arrangement and installation of the adjustment assembly 44, as shown in FIG. Figure 6 As shown, in a specific embodiment of the present invention, the base 41 includes a base 411, the limiting shaft hole 42 is vertically penetrated at the center position of the base 411, and a sliding sink 412 is horizontally arranged at the bottom of the base 411, and the sliding sink 412 is connected to the limiting shaft hole 42 and forms an inverted T-shaped structure. The base 41 also includes a bottom plate 413, and the bottom plate 413 is detachably mounted on the bottom of the base 411. The bottom plates 413 at both ends of the sliding sink 412 and the base 411 are also symmetrically provided with side plates 414, as shown in FIG. Figure 5 As shown, the side panels 414 and the bottom panel 413 enable the sliding groove 412 to form a strip-shaped installation cavity 415 for installing the adjustment component 44. Based on the above design, by removing the side panels 414 and the bottom panel 413, it is convenient for the staff to install the adjustment component 44 in the strip-shaped installation cavity 415.

[0051] In order to accurately complete the position adjustment of the pad 43, combined with the following Figure 4 , Figure 5 and Figure 7As shown, in a specific embodiment of the present invention, the adjustment assembly 44 includes a pair of adjustment blocks 441 slidably adapted in the strip-shaped installation cavity 415, and the pair of adjustment blocks 441 are symmetrically distributed on both sides of the limiting shaft hole 42, wherein the first inclined surface 442 is formed on the opposite sides of the pair of adjustment blocks 441, and the first inclined surfaces 442 of the pair of adjustment blocks 441 form an inverted eight-shaped shape, and the two sides of the bottom of the cushion block 43 are respectively formed with second inclined surfaces 431 adapted to the first inclined surfaces 442 of the pair of adjustment blocks 441, and the cushion block The second inclined surface 431 of 43 is slidably matched with the first inclined surface 442 corresponding to the adjusting block 441 through a keyway structure; the adjusting component 44 also includes a bidirectional high-precision screw 443 rotatably arranged in the strip-shaped mounting cavity 415, and a motor 444 for driving the bidirectional high-precision screw 443 to rotate, the bidirectional high-precision screw 443 passes through a pair of the adjusting blocks 441 and is threadedly matched with a pair of the adjusting blocks 441, and the two ends of the bidirectional high-precision screw 443 are rotatably connected to the two side plates 414 respectively.

[0052] Based on the above design, the strip-shaped installation cavity 415 can limit the sliding direction of the pair of adjustment blocks 441, that is, the pair of adjustment blocks 441 can only slide along the length direction of the strip-shaped installation cavity 415, and the bidirectional high-precision screw 443 can accurately adjust the distance between the pair of adjustment blocks 441, thereby completing the accurate adjustment of the height of the cushion block 43, so that the hole depth of the limit shaft hole 42 is adapted to the long axis 11 of the rocker arm shaft 1. Specifically, the motor 444 drives the bidirectional high-precision screw 443 to rotate. When the bidirectional high-precision screw 443 rotates, the bidirectional high-precision screw 443 is connected to the pair of adjustment blocks 441 by the bidirectional high-precision screw 443. The threaded cooperation of the node block 441 drives a pair of adjustment blocks 441 to move away from or toward each other. When the pair of adjustment blocks 441 move away from each other, the pair of adjustment blocks 441, based on the cooperation between their first inclined surfaces 442 and the second inclined surface 431 of the cushion block 43, can enable the cushion block 43 to move axially downward in the strip-shaped limiting hole to increase the hole depth of the strip-shaped limiting hole; when the pair of adjustment blocks 441 move toward each other, the pair of adjustment blocks 441, based on the cooperation between their first inclined surfaces 442 and the second inclined surface 431 of the cushion block 43, can enable the cushion block 43 to move axially upward in the strip-shaped limiting hole to reduce the hole depth of the strip-shaped limiting hole.

[0053] Considering that the position of the pad 43 is locked by the thread cooperation of the bidirectional high-precision screw 443 and the adjusting block 441, during the riveting process, when pressure acts on the rocker shaft 1 (i.e., the pad 43), a force will be generated to move the pair of adjusting blocks 441 in opposite directions. If the force is too large, the external thread of the bidirectional high-precision screw 443 will be damaged. Figure 7As shown, in a specific embodiment of the present invention, the bottom of the base 41 is also connected to a mounting substrate 45; the mounting substrate 45 is mounted on the top of the placement table 32 through a snap-fit ​​structure, and the top of the mounting substrate 45 is also provided with a pair of vertical slots 451 adapted to the side panels 414, and the bottoms of the two side panels 414 extend downward and can be snapped into the pair of vertical slots 451 to complete the connection between the mounting substrate 45 and the base 41;

[0054] Combination Figure 5 and Figure 8 As shown, the anti-displacement component 5 includes a rubber pad 51, a movable bar 52 and a resistance bar 53. The rubber pad 51 is arranged between the mounting substrate 45 and the base 41. A strip groove 54 is arranged at the top of the bottom plate 413 corresponding to the position of the strip-shaped mounting cavity 415. The movable bar 52 is longitudinally slidably adapted in the strip groove 54, and two resistance bars 53 are arranged at the bottom of the movable bar 52. The bottom end of the resistance bar 53 passes through the base 41 and the rubber pad 51 and resists the mounting substrate 45. A first friction surface is arranged at the top of the movable bar 52, and a second friction surface is arranged at the bottom of the adjustment block 441 corresponding to the position of the strip groove 54.

[0055] Based on the above design, initially, the rubber pad 51 is in a normal state. It can be understood that the rubber pad 51 is not compressed and deformed. At this time, the bottom end of the movable bar 52 abuts against the mounting base plate 45 under the action of gravity, while the first friction surface of the movable bar 52 and the second friction surface of the adjusting block 441 are not in contact, and there is a slight gap between the two, which is convenient for the staff to adjust the position of the pad 43 so that the hole depth of the limit shaft hole 42 is adapted to the length of the rocker shaft 1. During the riveting process, after the rivet head 311 applies a force to the short shaft 13 of the rocker shaft 1, the force will cause the base 41 to move downward as a whole and compress the rubber pad 51. At this time, the movable bar 52 is relative to the base 41, and the movable bar 52 is displaced upward in the strip groove 54, so that the first friction surface of the movable bar 52 contacts the second friction surface of the adjusting block 441, thereby increasing the friction by squeezing the adjusting block 441 to avoid the adjusting block 441 moving in opposite directions and causing force to be applied to the thread of the bidirectional high-precision thread.

[0056] like Figure 8As shown, further, the anti-displacement component 5 also includes a rotating rod 55 symmetrically arranged on both sides of the bidirectional high-precision screw 443, the rotating rod 55 includes a positive spiral portion 551 and a reverse spiral portion 552 connected to each other, and a rotating portion 553 connecting the positive spiral portion 551 and the reverse spiral portion 552 at opposite ends, the two rotating portions 553 of the rotating rod 55 are respectively rotatably connected to a pair of side plates 414, and the positive spiral portion 551 and the reverse spiral portion 552 of the rotating rod 55 respectively penetrate a pair of adjustment blocks 441; one of the rotating portions 553 of the rotating rod 55 penetrates the corresponding side plate 414 and is fixedly connected to a rotating disk 56, a third friction surface is arranged on the outer peripheral surface of the rotating disk 56, a friction strip 57 is arranged on the mounting base plate 45 directly below the rotating disk 56, the top of the friction strip 57 is arranged with an arc groove adapted to the rotating disk 56, and a fourth friction surface is arranged in the arc groove.

[0057] Based on the above design, similarly, at the beginning, the rubber pad 51 is in a normal state. It can be understood that the rubber pad 51 is not compressed and deformed. At this time, the fourth friction surface of the friction strip 57 is not in contact with the third friction surface of the rotating disk 56. Then, when the staff adjusts the position of the pad 43, due to the cooperation between the positive spiral portion 551 and the reverse spiral portion 552 of the rotary rod 55 and the pair of adjustment blocks 441, the rotary rod 55 will rotate accordingly. During the riveting process, after the riveting head 311 applies a force to the short shaft 13 of the rocker shaft 1, the force will cause the base 41 to move downward as a whole and compress the rubber pad 51. At this time, the rotating disk 56 will move downward so that its third friction surface contacts the fourth friction surface of the friction strip 57, thereby limiting the rotation of the rotary rod 55 by limiting the rotation of the rotating disk 56. In this way, the movement of the pair of adjustment blocks 441 can be locked by the rotary rod 55 to prevent the force of the adjustment block 441 from being applied to the thread of the bidirectional high-precision thread.

[0058] It is worth mentioning that the design of the rotary rod 55 of the present invention, on the one hand, can rotate accordingly according to the movement of the adjusting block 441 to adapt to the stepless adjustment of the adjusting block 441, and on the other hand, after the rotary rod 55 is limited, it can limit the movement of the adjusting block 441, and the rotation of the rotary rod 55 is limited by the lever principle, that is, the diameter of the rotating disk 56 is equivalent to the long arm, and the positive spiral portion 551 and the reverse spiral portion 552 of the rotary rod 55 are equivalent to the short arm.

[0059] In a specific embodiment of the present invention, the base 41 and the mounting substrate 45 are made of carbon-molybdenum steel, and the cushion block 43 and the adjustment block 441 are made of powder metallurgy steel.

[0060] like Figure 2 As shown, in a specific embodiment of the present invention, an extension plate 6 is slidably connected to one side of the base 41, and the extension plate has a placement surface parallel to the horizontal plane. The extension plate 6 can support the rocker arm 2 during riveting.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A riveting device for a titanium alloy rocker arm assembly, comprising a mounting platform, a placing platform fixedly mounted on the mounting platform, and a riveting assembly; the riveting assembly is arranged directly above the placing platform, the riveting assembly comprises a riveting head and a driving device, and is characterized in that: The placing table is detachably provided with a lower die assembly for fixing the rocker shaft, and the driving device is used to drive the riveting head and exert force on the short shaft of the rocker shaft for riveting; the lower die assembly comprises a base, a cushion block, an adjustment assembly and an anti-displacement assembly, a limiting shaft hole with an open top is provided at the center of the base, the cushion block is installed in the limiting shaft hole through the adjustment assembly in a manner that it can slide along the axial direction of the limiting shaft hole, and the anti-displacement assembly is used to limit the movement of the cushion block during the riveting process; The base comprises a base body, the limiting shaft hole is vertically penetrated at the center of the base body, and a sliding groove is horizontally arranged at the bottom of the base body, the sliding groove is communicated with the limiting shaft hole and forms an inverted T-shaped structure, the base further comprises a bottom plate, the bottom plate is detachably mounted on the bottom of the base body, and side plates are symmetrically arranged on the bottom plates at both ends of the sliding groove and the base body, and the side plates and the bottom plate enable the sliding groove to form a strip-shaped installation cavity for installing the adjustment component; The adjustment assembly comprises a pair of adjustment blocks slidably adapted in the strip-shaped installation cavity, the pair of adjustment blocks are symmetrically distributed on both sides of the limiting shaft hole, wherein the first inclined surfaces are formed on the opposite sides of the pair of adjustment blocks, and the first inclined surfaces of the pair of adjustment blocks are formed in an inverted eight-shaped shape, and the two sides of the bottom of the cushion block are respectively formed with second inclined surfaces adapted to the first inclined surfaces of the pair of adjustment blocks, and the second inclined surfaces of the cushion block are slidably matched with the first inclined surfaces of the corresponding adjustment blocks through a keyway structure; The adjustment assembly also includes a bidirectional high-precision screw rotatably arranged in the strip-shaped installation cavity, and a motor for driving the bidirectional high-precision screw to rotate, the bidirectional high-precision screw passes through a pair of the adjustment blocks and is threadedly matched with a pair of the adjustment blocks, and the two ends of the bidirectional high-precision screw are respectively rotatably connected to the two side plates; The bottom of the base is also connected to a mounting base plate; the mounting base plate is mounted on the top of the placement table through a snap-fit ​​structure, and the top of the mounting base plate is also provided with a pair of vertical slots adapted to the side plates, and the bottoms of the two side plates extend downward and can be snapped into the pair of vertical slots to complete the connection between the mounting base plate and the base; The anti-displacement assembly includes a rubber pad, a movable bar and a resistance bar, wherein the rubber pad is arranged between the mounting substrate and the base, a strip-shaped groove is arranged at the top of the bottom plate corresponding to the position of the strip-shaped mounting cavity, the movable bar is longitudinally slidably adapted in the strip-shaped groove, and two resistance bars are arranged at the bottom of the movable bar, and the bottom end of the resistance bar passes through the base and the rubber pad and resists the mounting substrate; A first friction surface is arranged on the top of the movable bar, and a second friction surface is arranged on the bottom of the adjustment block corresponding to the position of the strip-shaped groove; The anti-displacement assembly also includes a rotating rod symmetrically arranged on both sides of the bidirectional high-precision screw, the rotating rod includes a positive spiral portion and a reverse spiral portion connected to each other, and a rotating portion connecting the positive spiral portion and the reverse spiral portion at opposite ends, the two rotating portions of the rotating rod are respectively rotatably connected to a pair of side plates, and the positive spiral portion and the reverse spiral portion of the rotating rod respectively penetrate a pair of adjustment blocks; One of the rotating parts of the rotary rod passes through the corresponding side plate and is fixedly connected to a rotating disk. A third friction surface is arranged on the outer peripheral surface of the rotating disk. A friction strip is arranged on the mounting base plate directly below the rotating disk. An arc groove matching the rotating disk is arranged on the top of the friction strip, and a fourth friction surface is arranged in the arc groove.

2. The riveting device for titanium alloy rocker arm assembly according to claim 1, characterized in that: The base and the mounting substrate are made of carbon-molybdenum steel, and the pad and the adjusting block are made of powder metallurgy steel.

3. The riveting device for titanium alloy rocker arm assembly according to claim 1, characterized in that: An extension plate is slidably clamped on one side of the base, and the extension plate has a placement surface parallel to the horizontal plane.

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