A swing arm assembly method and system

Abstract

The present application relates to the technical field of vehicle swing arm, in particular to a swing arm assembling method and system. The swing arm is pre-assembled and positioned and clamped on a supporting assembly; a second pressing unit extrudes a pressing area on the upper end surface of the pressing ring of the swing arm; a spin riveting module rotates around the central axis of the pressing ring and moves vertically to extrude the riveting ring of the swing arm to deform towards the pressing ring; wherein the pressing area is located on the side of the pressing ring away from the driving part providing vertical movement of the spin riveting module; when the extrusion force applied by the spin riveting module changes in the rotating direction and the change amount is greater than a set value, the pressure of the second pressing unit extruding the pressing ring increases to the abutting position of the deformed part of the riveting ring and the pressing ring. Thus, the problem of uneven riveting of the riveting ring is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle swing arm, in particular to a swing arm assembling method and system. BACKGROUND

[0002] In the swing arm processing process, when the swing arm is compressed, the recess on the swing arm and the ball head and the ball sleeve are compressed by a spin riveting unit. The ball sleeve is wrapped around the outer surface of the ball head. The spin riveting unit includes a spin riveting module and a driving part. The operation depends on the cooperation of the driving part and the spin riveting module. The driving part drives the compression ring to move downward in the vertical direction. The compression ring provides a compression force for the matching parts of the swing arm recess, the ball head and the ball sleeve through the downward movement of the compression ring, so as to ensure the initial adhesion of the two. The spin riveting module is responsible for extruding the riveting ring for spin riveting operation, so that the ball head moves in the swing arm recess. Due to the height limitation in the processing scene, in order to avoid space interference between the driving part and other components, the central axis of the driving part cannot coincide with the central axis of the spin riveting module, and the driving part can only be arranged on one side of the spin riveting module in the radial direction.

[0003] When the swing arm recess, the ball head and the ball sleeve are compressed and spin riveted by the above-mentioned spin riveting unit, the spin riveting module and the driving part are in sliding connection, and there is a certain gap between them. When the spin riveting module is pressed down, this gap will cause the lower end surface of the spin riveting module to tilt away from the side of the driving part, resulting in that the lower end of the spin riveting module close to the driving part has a larger downward pressure on the riveting ring, and the lower end of the spin riveting module away from the driving part has a smaller downward pressure on the riveting ring, thereby affecting the operation accuracy in the swing arm processing, and finally causing uneven riveting of the riveting ring after the swing arm processing. SUMMARY

[0004] In order to solve the problem of uneven riveting of the riveting ring, the present application provides a swing arm assembling method and system.

[0005] In the first aspect, the present application discloses a swing arm assembling method, which comprises the following steps:

[0006] The swing arm is pre-assembled and clamped on the support assembly;

[0007] The second compression unit extrudes the compression area of the upper end surface of the compression ring of the swing arm;

[0008] The spin riveting module rotates around the central axis of the compression ring and moves vertically to extrude the riveting ring of the swing arm to deform towards the side close to the compression ring; wherein the compression area is located on the side of the compression ring away from the driving part which provides vertical movement for the spin riveting module;

[0009] When the extrusion force applied by the spin riveting module changes in the rotation direction and the change amount is greater than a set value, the pressure of the second compression unit extruding the compression ring increases to the abutting position of the deformed part of the riveting ring and the compression ring.

[0010] In some embodiments, the pre-assembly of the swing arm includes:

[0011] moving the swing arm to the support assembly;

[0012] moving the ball and the buffer shell through the riveting ring into the installation pit; wherein the buffer shell is wrapped around the outer circumferential surface of the ball;

[0013] sleeving the compression ring on the outer circumferential side of the ball close to one end of the swing rod.

[0014] In some embodiments, the support assembly includes a positioning seat, a first compression unit;

[0015] The moving of the swing arm to the support assembly includes:

[0016] moving the swing arm to the positioning seat;

[0017] The clamping of the swing arm includes:

[0018] The first compression unit applies a force to the swing arm in the direction close to the positioning seat.

[0019] In some embodiments, 1 / 3 < S1 / S2 < 2 / 3; wherein S1 is the area of the compression region, and S2 is the area of the upper surface of the compression ring.

[0020] In some embodiments, the rotating and vertically moving of the riveting module around the central axis of the compression ring to extrude the riveting ring of the swing arm to deform in the direction close to the compression ring includes:

[0021] The rotating and vertically moving of the riveting module around the central axis of the compression ring to extrude the riveting ring of the swing arm to deform in the direction close to the compression ring at a first speed; wherein the riveting ring is spaced from the compression ring, and the riveting module moves vertically at the first speed;

[0022] Based on the deformation of the riveting ring to abut against the compression ring, the rotating and vertically moving of the riveting module around the central axis of the compression ring to extrude the riveting ring of the swing arm to deform in the direction close to the compression ring at a second speed; wherein the first speed is greater than the second speed.

[0023] In some embodiments, when the extrusion force applied by the riveting module varies in the direction of its rotation by an amount greater than a set value, the second compression unit increases the pressure of the compression ring to the deformation part of the riveting ring abutting against the compression ring includes:

[0024] When the variation of the pressing force applied by the spin rivet module in the rotation direction thereof is greater than a set value, the second pressing unit increases the pressing force applied to the pressing ring and continues to acquire the variation of the pressing force applied by the spin rivet module in the rotation direction thereof;

[0025] When the variation of the pressing force applied by the spin rivet module in the rotation direction thereof is less than or equal to the set value and the riveting ring is deformed to abut against the pressing ring, the spin rivet module stops vertical movement and keeps rotating around the central axis of the pressing ring for a set time.

[0026] In some embodiments, the when the variation of the pressing force applied by the spin rivet module in the rotation direction thereof is greater than a set value, the second pressing unit increases the pressing force applied to the pressing ring to the position where the deformed part of the riveting ring abuts against the pressing ring further comprises:

[0027] When the variation of the pressing force applied by the spin rivet module in the rotation direction thereof is greater than a set value, the fifth driving part drives the lower end surface of the spin rivet module to move downward to the position where the minimum pressure value is acquired;

[0028] When the fifth driving part drives the lower end surface of the spin rivet module to move downward to the position where the minimum pressure value is acquired to the position where the variation of the pressing force applied by the spin rivet module in the rotation direction thereof is less than or equal to the set value, the third driving part drives the spin rivet module to move downward to the position where the riveting ring is deformed to abut against the pressing ring;

[0029] The spin rivet module keeps rotating around the central axis of the pressing ring for a second set time.

[0030] In some embodiments, the swing arm assembly method further comprises:

[0031] When the fifth driving part drives the lower end surface of the spin rivet module to move downward to the position where the minimum pressure value is acquired to the position where the variation of the pressing force applied by the spin rivet module in the rotation direction thereof is greater than the set value, an alarm is issued and the spin rivet module moves upward.

[0032] In a second aspect, the present application discloses a swing arm assembly system, which is applied to the swing arm installation method of any one of the first aspect and comprises:

[0033] The swing arm comprises an arm seat unit and a swing rod unit. The arm seat unit comprises an arm seat body, a mounting pit and a riveting ring. The mounting pit is recessed from the outer circumferential surface of the arm seat body in a direction away from the outer circumferential surface of the arm seat body, forming a shell with an open end. The riveting ring is connected to the open end of the arm seat body. The swing rod unit comprises a swing rod, a ball, a pressing ring and a buffer shell. One end of the swing rod is connected to the ball, and the other end of the swing rod extends in a direction away from the ball. The pressing ring is sleeved on the outer circumferential surface of the ball. The pressing ring is arranged at the end of the ball close to the swing rod. The buffer shell is wrapped around the outer circumferential surface of the ball.

[0034] a support assembly for placing and positioning the swing arm;

[0035] The riveting assembly comprises a riveting unit and a second pressing unit. The riveting unit comprises a third driving part and a riveting module. The third driving part is arranged on one side of the riveting module in the horizontal direction. The third driving part is drivingly connected with the riveting module. The riveting module is used for the riveting ring to exert pressure. The second pressing unit is used for the pressing ring to exert a force in the direction of approaching the sphere.

[0036] The working state of the swing arm assembly system comprises that the swing arm is arranged on the support assembly for positioning and clamping. The second pressing unit moves the sphere and the buffer shell into the installation pit through the riveting ring. At the same time, the second pressing unit abuts against the pressing area of the pressing ring to move the pressing ring into the surrounding space of the riveting ring and exert a force in the direction of approaching the sphere on the pressing ring. The riveting module rotates around the central axis of the pressing ring, and the third driving part drives the riveting module to move vertically to extrude the riveting ring of the swing arm to deform in the direction of approaching the pressing ring. The pressing area is located on the side of the pressing ring away from the third driving part.

[0037] In some embodiments, the riveting unit comprises a fifth driving part. The fifth driving part is drivingly connected with the riveting module. The fifth driving part is used for driving the partial lower end surface of the riveting module to move upward or downward.

[0038] To solve the problem of uneven riveting of the riveting ring, the present application has the following advantages:

[0039] By completing the pre-assembly of the swing arm and positioning and clamping on the support assembly, and extruding the pressing area on the upper end surface of the pressing ring of the swing arm by the second pressing unit (wherein the pressing area is located on the side of the pressing ring away from the driving part for vertically moving the riveting module), and rotating the riveting module around the central axis of the pressing ring and vertically moving to extrude the riveting ring of the swing arm to deform in the direction of approaching the pressing ring, by increasing the force of the second pressing unit on the pressing area, the end of the pressing ring away from the pressing area is raised upward. The upward force can offset the force of the pressing ring away from the pressing area generated by the downward pressure of the vertically moving riveting module, thereby achieving the effect of preventing the pressing ring from being skewed. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 A swing arm assembly method flowchart of one embodiment is shown;

[0041] Figure 2 A first perspective view of a swing arm assembly system of one embodiment is shown;

[0042] Figure 3 A second-view schematic diagram of a swing arm assembly system according to one embodiment is shown;

[0043] Figure 4 It shows Figure 3 A partial schematic diagram of the swing arm assembly system;

[0044] Figure 5 A third-view schematic diagram of a swing arm assembly system according to one embodiment is shown;

[0045] Figure 6 It shows Figure 5 A partial schematic diagram of the swing arm assembly system;

[0046] Figure 7 A partial schematic diagram of a swing arm according to one embodiment is shown;

[0047] Figure 8 A schematic diagram of a swing arm according to one embodiment is shown.

[0048] Reference numerals: 10 Support assembly; 11 Base; 12 Positioning seat; 13 First clamping unit; 131 First drive unit; 132 Second drive unit; 133 Clamping fork; 20 Riveting assembly; 21 Riveting unit; 211 Third drive unit; 212 Fourth drive unit; 213 Fifth drive unit; 214 Riveting module; 2141 Riveting seat; 2142 Riveting head; 2143 Sensor; 22 Second clamping unit; 221 Sixth drive unit; 222 Clamping head; 30 Swing arm; 31 Arm seat unit; 311 Arm seat body; 312 Mounting pit; 313 Riveting ring; 32 Arm body unit; 321 First arm body; 322 Second arm body; 33 Swing rod unit; 331 Swing rod; 332 Ball; 333 Buffer shell; 334 Clamping ring. Detailed Implementation

[0049] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0050] As used herein, the term "includes" and its variants are to be read as open-ended terms that mean "including, but not limited to." The term "based on" is to be construed as "based at least in part on." The terms "one embodiment" and "an embodiment" are to be read as "at least one embodiment." The term "another embodiment" is to be read as "at least one other embodiment." The terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," "longitudinal," and similar terms are used for orientation or positional relationships based on the orientation or position as shown in the drawings. These terms are used merely for purposes of description and are not intended to limit the indicated device, element, or component to a particular position, orientation, or configuration, unless otherwise indicated. Moreover, these terms are used in conjunction with the terms "abutting," "adjoining," "attached," "connected," "engaged," "interfacing," and similar terms to describe a relationship between or among devices, elements, or components, and are not intended to limit the position, orientation, or configuration of the so-described devices, elements, or components, unless otherwise indicated. The specific meaning of these terms will depend on the particular context in which they are used. The terms "mount," "position," "disposed," "connected," and "coupled" are to be construed broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be mechanical, electrical, or optical; it can be direct or through intermediate media; and it can be internal or external. The specific meaning of these terms will depend on the particular context in which they are used. The terms "first," "second," and similar terms are used to differentiate between two or more elements, components, or steps, and are not intended to indicate or imply a relative importance or significance of the so-designated elements, components, or steps unless otherwise indicated. "Plurality" means two or more, unless otherwise indicated.

[0051] In the process of machining the swing arm 30 to realize the pressing of the groove on the swing arm 30 and the ball socket, the swing arm 30 needs to be pre-assembled and clamped on the support assembly 10, and then the riveting module 214 needs to be rotated around the central axis of the pressing ring 334 and moved vertically to extrude the riveting ring 313 of the swing arm 30 to deform towards the pressing ring 334. The pressing area is located on the side of the pressing ring 334 away from the driving part that provides vertical movement of the riveting module 214. However, in the existing machining scene, since the sliding part and the connecting part are in sliding connection, there is a certain gap between them. When an external force (such as the downward force generated during the operation of the riveting module 214) is applied to the pressing ring 334, the external force is relatively large, which causes the pressing ring 334 to be subjected to a relatively large counterforce, thereby causing the pressing ring 334 to tilt towards the side away from the connecting part. Finally, in the above-mentioned swing arm 30 machining process, the problem of uneven distribution of the riveting ring 313 occurs.

[0052] Embodiment one: the embodiment discloses a swing arm 30 assembling method, as shown in the figure Figure 1 The swing arm 30 assembling method comprises steps S10-S40, and each step is described in detail as follows:

[0053] The swing arm 30, as shown in the figure Figure 7 The swing arm 30, as shown in the figure The swing arm 30, as shown in the figure

[0054] The swing arm 30, as shown in the figure The swing arm 30, as shown in the figure

[0055] The swing arm 30, as shown in the figure Figure 3 The swing arm 30, as shown in the figureAs shown, the spin riveting unit 21 includes a third driving part 211 and a spin riveting module 214; the third driving part 211 is arranged at one side of the spin riveting module 214 in the horizontal direction, avoiding the third driving part 211 and the spin riveting module 214 from interfering with each other in the vertical direction, and ensuring that the spin riveting module 214 can move smoothly in the vertical direction; the third driving part 211 is drivingly connected with the spin riveting module 214; the spin riveting module 214 is used for applying pressure to the riveting ring 313; the second pressing unit 22 is used for applying a force to the pressing ring 334 in the direction of the sphere 332, and the force in the direction of the sphere 332 can make the pressing ring 334 closely fit the sphere 332, and at the same time drive the sphere 332 to move into the installation pit 312, ensuring that the sphere 332 and the buffer shell 333 can be accurately positioned; as Figure 5 As shown, the spin riveting unit 21 further includes a fourth driving part 212, which can drive the spin riveting unit 21 to rotate, realizing the spin riveting operation of the riveting ring 313.

[0056] In step S10, the swing arm 30 is pre-assembled and clamped on the support assembly 10, ensuring that the swing arm 30 is stable in position during subsequent processing, avoiding affecting the processing accuracy due to displacement;

[0057] In step S20, based on the swing arm 30 being pre-assembled and clamped on the support assembly 10, the second pressing unit 22 extrudes the pressing area of the upper end surface of the pressing ring 334 of the swing arm 30, providing initial pressure for the pressing ring 334 and preliminarily limiting the position of the pressing ring 334; further, the second pressing unit 22 can be in full abutment with the upper end surface of the pressing ring 334 of the swing arm 30, and the pressure near the pressing area is greater.

[0058] In step S30, based on the second pressing unit 22 extruding the pressing area of the upper end surface of the pressing ring 334 of the swing arm 30, the spin riveting module 214 rotates around the central axis of the pressing ring 334 and moves vertically to extrude the riveting ring 313 of the swing arm 30 to deform in the direction of the pressing ring 334, and through the movement of the spin riveting module 214, the riveting ring 313 gradually deforms to approach the pressing ring 334, while avoiding interference between the pressing area and the driving part; wherein the pressing area is located on the side of the pressing ring 334 away from the driving part providing vertical movement of the spin riveting module 214, and the side of the pressing ring 334 away from the driving part providing vertical movement of the spin riveting module 214 is the third driving part 211;

[0059] In step S40, the variation of the extrusion force applied by the spin riveting module 214 in its rotation direction is greater than a set value, and the variation can be the maximum pressure value minus the minimum pressure value of the riveting ring 313 abutting against the spin riveting module 214 during the rotation of the spin riveting unit 21 by 360° around the center axis of the pressing ring 334 at any position close to one end of the riveting ring 313. When the pressure of the second pressing unit 22 extruding the pressing ring 334 increases to the abutting position of the deformed part of the riveting ring 313 and the pressing ring 334, a certain gap exists between the sliding part and the connecting part due to the sliding connection therebetween. When the third driving part 211 drives the spin riveting module 214 to move downward, the spin riveting module 214 can be inclined due to the uneven force, thereby causing the riveting ring 313 close to the third driving part 211 to bear a larger pressure. At the same time, the pressing ring 334 close to the third driving part 211 abuts against the riveting ring 313, and the pressing ring 334 generates an upward force on the riveting ring 313. The riveting head close to the third driving part 211 bears a larger pressure on the riveting ring 313, and the two forces are balanced to balance the force borne by the riveting ring close to the third driving part 211. By increasing the force of the second pressing unit 22 in the pressing area, the pressing ring 334 close to the third driving part 211 has an upward movement trend, which offsets the inclination of the pressing ring 334 due to the downward pressure of the driving part on the side close to the third driving part 211, and finally solves the problem of uneven pressure distribution of the riveting ring 313.

[0060] Further, step S10 includes steps S11-S13, and steps S11, S12, S13, S20, S30, and S40 are executed in sequence, and each step is described in detail as follows.

[0061] In step S11, the swing arm 30 is moved to the support assembly 10 to provide a basic support for the pre-assembly of the swing arm 30 and ensure that the swing arm 30 is in a preset machining position.

[0062] In step S12, based on the movement of the swing arm 30 to the support assembly 10, the ball 332 and the buffer shell 333 are moved to the installation pit 312 through the riveting ring 313 to realize the preliminary installation of the ball 332 and the buffer shell 333 in the arm seat unit 31, and the buffer shell 333 can also protect the ball 332 from being damaged during machining; wherein the buffer shell 333 is wrapped around the outer circumferential surface of the ball 332.

[0063] In step S13, based on the movement of the ball 332 and the buffer shell 333 to the installation pit 312 through the riveting ring 313, the pressing ring 334 is sleeved on the outer circumferential side of the end of the ball 332 close to the swing rod 331 to complete the assembly of the pressing ring 334 and the ball 332 and prepare for the subsequent extrusion of the second pressing unit 22.

[0064] Further, the support assembly 10 comprises a positioning seat 12 and a first pressing unit 13, which provide a structural basis for the placement and positioning clamping of the swing arm 30. Figure 6 As shown, the first pressing unit 13 comprises a first driving part 131, a second driving part 132 and a pressing fork 133; the first driving part 131 can drive the pressing fork 133 to move in the vertical direction, the second driving part 132 can drive the pressing fork 133 to move in the horizontal direction, and the pressing fork 133 can exert a force on the swing arm 30 in the direction of approaching the positioning seat 12, so that the pressing fork 133 can abut against the arm seat unit 31.

[0065] Step S11 comprises:

[0066] The swing arm 30 is moved to the positioning seat 12, so that the swing arm 30 is stably placed on the positioning seat 12, preparing for subsequent positioning clamping;

[0067] The positioning clamping of the swing arm 30 further comprises step S14: steps S11, S12, S13, S14, S20, S30, S40 are executed in sequence.

[0068] In step S14, based on the fact that the pressing ring 334 is sleeved on the outer circumferential side of the ball 332 close to the swing lever 331, the first pressing unit 13 exerts a force on the swing arm 30 in the direction of approaching the positioning seat 12, and the swing arm 30 is firmly fixed on the positioning seat 12 by the force, preventing the swing arm 30 from shifting during processing.

[0069] Further, 1 / 3 < S1 / S2 < 2 / 3; wherein S1 is the area of the pressing region, and S2 is the area of the upper end surface of the pressing ring 334, so that the area of the pressing region is neither too small to cause the force of the second pressing unit 22 to be too concentrated and damage the pressing ring 334, nor too large to cause the force to be dispersed and make it difficult for the side of the pressing ring 334 close to the third driving part 211 to produce an upward movement trend. The pressing region can be a region where the action force of the riveting unit 21 is increased, so that the lower end surface of the second pressing unit 22 can abut against the upper end surface of the entire pressing ring 334. At this time, the end of the pressing ring 334 close to the third driving part 211 exerts sufficient upward force on the riveting ring 313, the riveting head close to the third driving part 211 exerts greater pressure on the riveting ring 313, and the balance of the two forces makes the end of the riveting ring close to the third driving part 211 balanced in force.

[0070] Further, the second pressing unit 22 comprises a sixth driving part 221, a pressing rod, a pressing head 222 and a suction part, the sixth driving part 221 is drivingly connected with the pressing head 222, the pressing rod is connected with the pressing head 222, and the swing lever 331 can be sleeved on the pressing rod and connected through the suction part.

[0071] Further, the step S30 comprises steps S31-S32, and the steps S10, S20, S31, S32, S40 are executed in sequence, and each step is described in detail as follows:

[0072] In step S31, based on the second pressing unit 22 extruding the pressing area of the upper end surface of the pressing ring 334 of the swing arm 30, the spin riveting module 214 rotates around the central axis of the pressing ring 334 and moves the riveting ring 313 of the swing arm 30 in the vertical direction at a first speed to deform towards the pressing ring 334; wherein, when the riveting ring 313 is spaced from the pressing ring 334, the spin riveting module 214 moves in the vertical direction at a first speed, and during the interval when the riveting ring 313 is spaced from the pressing ring 334, the first speed is faster, which can make the riveting ring 313 quickly approach the pressing ring 334, thereby improving the processing efficiency;

[0073] In step S32, based on the riveting ring 313 deforming to abut against the pressing ring 334, the spin riveting module 214 rotates around the central axis of the pressing ring 334 and moves the riveting ring 313 of the swing arm 30 in the vertical direction at a second speed to deform towards the pressing ring 334, and after abutting, the second speed is slower, which can avoid damage or uneven deformation of the riveting ring 313 due to too fast deformation; wherein, the first speed is greater than the second speed, and by setting the speed in stages, the effect of balancing the processing efficiency and the processing quality is achieved, and the stable deformation of the riveting ring 313 is ensured.

[0074] Further, the step S40 comprises steps S41-S42, and the steps S10, S20, S30, S41, S42 are executed in sequence, and each step is described in detail as follows:

[0075] In step S41, based on the variation of the extrusion force applied by the spin riveting module 214 in the rotation direction being greater than a set value, the second pressing unit 22 increases the pressure for extruding the pressing ring 334 and continues to obtain the variation of the extrusion force applied by the spin riveting module 214 in the rotation direction, and by monitoring the variation in real time, the pressure can be adjusted in time to ensure accurate pressure adjustment;

[0076] In step S42, based on the variation of the extrusion force applied by the spin riveting module 214 in the rotation direction being less than or equal to a set value and the riveting ring 313 deforming to abut against the pressing ring 334, the spin riveting module 214 stops vertical movement and keeps rotating around the central axis of the pressing ring 334 for a set time, and after the extrusion force is stable and the riveting ring 313 is in place, continuous rotation can make the riveting ring 313 deform more fully and stably, thereby ensuring the riveting quality. Through real-time monitoring and adjustment of the extrusion force and pressure maintaining rotation after riveting, the effect of ensuring stable abutment of the riveting ring 313 and reliable riveting quality is achieved.

[0077] Further, the step S40 comprises steps S43-S45, and the steps S10, S20, S30, S41, S43, S44, S45 are executed in sequence, and each step is described in detail as follows:

[0078] The spin riveting unit 21 further comprises a fifth driving part 213, which can drive the spin riveting module 214 to tilt (the tilt of the spin riveting module 214 can be that the top end of the spin riveting module 214 moves to the left and the bottom end moves to the right, or the top end of the spin riveting module 214 moves to the right and the bottom end moves to the left), so that the height of each part of the lower end surface of the second pressing unit 22 is adjustable. Figure 2

[0079] Further, as shown in the figure, Figure 4 The spin riveting module 214 comprises a spin riveting seat 2141, a spin riveting head 2142, and a sensor 2143, the spin riveting seat 2141 is connected with the spin riveting head 2142, the spin riveting head 2142 can perform spin riveting on the riveting ring 313, and the sensor 2143 can obtain the pressure size in the riveting process.

[0080] In step S43, based on the fact that the extrusion force applied by the spin riveting module 214 in the rotation direction varies by more than a set value, the fifth driving part 213 drives the spin riveting module 214 to move downward at the position where the minimum pressure value is collected on the lower end surface, adjusts the pressure distribution of the spin riveting module 214, and makes the pressure more uniform; in step S44, based on the fact that the position where the minimum pressure value is collected on the lower end surface of the spin riveting module 214 moves downward to the position where the extrusion force applied by the spin riveting module 214 in the rotation direction varies by less than or equal to a set value, the third driving part 211 drives the spin riveting module 214 to move downward to deform the riveting ring 313 to abut against the pressing ring 334, and drives the spin riveting module 214 to move downward after the extrusion force is stable, so as to ensure that the riveting ring 313 accurately deforms to abut against the pressing ring 334;

[0081] In step S45, based on the fact that the third driving part 211 drives the spin riveting module 214 to move downward to deform the riveting ring 313 to abut against the pressing ring 334, the spin riveting module 214 is kept rotating around the center axis of the pressing ring 334 for a second set time, so that the riveting ring 313 further stably deforms after abutting against the pressing ring 334, thereby achieving the effect of ensuring that the riveting ring 313 accurately abuts against the pressing ring 334 and the riveting quality is good.

[0082] Further, the swing arm 30 assembly method further comprises a step S50, and the steps S10, S20, S30, S41, S43, S50 are executed in sequence.

[0083] ​In step S50, based on the fifth driving part 213 driving the position of the lower end surface of the spin riveting module 214 collecting the minimum pressure value to move down to the spin riveting module 214 The change of the extrusion force in the rotating direction is greater than the set value, an alarm is issued and the spin riveting module 214 is moved up. When the extrusion force is still greater than the set value after adjusting the position, an alarm is issued in time and the spin riveting module 214 is moved up, so as to avoid abnormal processing to cause component damage or processing failure, and ensure the processing safety and reliability.

[0084] Embodiment two: the embodiment discloses a swing arm 30 assembly system, which is applied to any swing arm 30 assembly method of embodiment one, as shown in the figure, the swing arm 30 assembly system further comprises: Figure 2

[0085] The swing arm 30 comprises an arm seat unit 31 and a swing rod unit 33; the arm seat unit 31 comprises an arm seat body 311, a mounting pit 312 and a riveting ring 313; the arm seat body 311 is a basic support structure; the mounting pit 312 provides mounting space for the ball 332 and the buffer shell 333; the riveting ring 313 provides an action object for subsequent riveting operation, so that the arm seat unit 31 has the basic functions of bearing and riveting; the mounting pit 312 is recessed from the outer circumferential surface of the arm seat body 311 to the direction away from the outer circumferential surface of the arm seat body 311, forming an open-ended shell; the open-ended shell design can facilitate the ball 332 and the buffer shell 333 to be loaded from the outside, ensuring convenient installation operation, and the recessed structure can limit the loaded components to prevent displacement; the riveting ring 313 is connected to the open end of the arm seat body 311, and the ball 332 and the buffer shell 333 are fixed in the mounting pit 312 through the deformation of the riveting ring 313, ensuring the connection stability of the assembled components; the swing rod unit 33 comprises a swing rod 331, a ball 332, a compression ring 334 and a buffer shell 333; one end of the swing rod 331 is connected to the ball 332, and the other end extends away from the ball 332, reserving space for the connection between the swing arm 30 and external structures, ensuring that the swing arm 30 can normally transmit motion; the compression ring 334 is sleeved on the outer circumferential surface of the ball 332; the compression ring 334 is arranged at one end of the ball 332 close to the swing rod 331; the buffer shell 333 wraps the outer circumferential surface of the ball 332;

[0086] Further, as shown in the figure, the swing arm 30 further comprises an arm body unit 32, and the arm body unit 32 comprises a first arm body 321 and a second arm body 322; one end of the arm seat body 311 is connected to the first arm body 321, and the other end is connected to the second arm body 322. Figure 8

[0087] The support assembly 10 is used for placing and positioning the swing arm 30, providing a bearing platform for the swing arm 30 during processing, and ensuring that the swing arm 30 is fixed in position during processing;

[0088] ​​The riveting assembly 20 includes a riveting unit 21 and a second pressing unit 22. The riveting unit 21 provides a force for the deformation of the riveting ring 313, and the second pressing unit 22 provides an extrusion force for the pressing ring 334. The riveting unit 21 includes a third driving part 211 and a riveting module 214. The third driving part 211 is arranged on one side of the riveting module 214 in the horizontal direction, so as to avoid the spatial interference between the third driving part 211 and the riveting module 214 in the vertical direction, and to ensure that the riveting module 214 can move smoothly in the vertical direction. The third driving part 211 is drivingly connected with the riveting module 214. The riveting module 214 is used for applying a pressure to the riveting ring 313. The second pressing unit 22 is used for applying a force to the pressing ring 334 in the direction of approaching the sphere 332. The force in the direction of approaching the sphere 332 can make the pressing ring 334 closely fit the sphere 332, and simultaneously drive the sphere 332 to move into the mounting pit 312, so as to ensure that the sphere 332 and the buffer shell 333 can be accurately positioned.

[0089] The working state of the swing arm 30 assembly system includes that the swing arm 30 is arranged on the support assembly 10 and is clamped and positioned, so that the swing arm 30 can keep the position stable in the subsequent assembly steps, avoid the position deviation of each component caused by the movement of the swing arm 30, ensure the assembly precision, the second pressing unit 22 moves the sphere 332 and the buffer shell 333 through the riveting ring 313 into the mounting pit 312, so as to ensure that the sphere 332 and the buffer shell 333 can be accurately positioned in the preset mounting position, the pressing region of the second pressing unit 22 and the pressing ring 334 abut, the pressing ring 334 is moved into the surrounding space of the riveting ring 313, and a force in the direction of approaching the sphere 332 is applied to the pressing ring 334, the riveting module 214 rotates around the center axis of the pressing ring 334, and the third driving part 211 drives the riveting module 214 to move in the vertical direction to extrude the riveting ring 313 of the swing arm 30 to deform in the direction of approaching the pressing ring 334. The pressing region is located on the side of the pressing ring 334 away from the third driving part 211, the force of the second pressing unit 22 in the pressing region is increased, the end of the pressing ring 334 away from the pressing region is raised, the effect of the downward pressure on the end is offset, so as to prevent the pressing ring 334 from being skewed, and finally solve the problem of uneven pressure distribution of the riveting ring 313.

[0090] Further, the riveting unit 21 includes a fifth driving part 213. The fifth driving part 213 is drivingly connected with the riveting module 214. The fifth driving part 213 is used for driving the partial lower end surface of the riveting module 214 to move upward or downward. Through the driving connection between the fifth driving part 213 and the riveting module 214, the position of the partial lower end surface of the riveting module 214 can be adjusted. Through the arrangement, the pressure distribution of the lower end surface of the riveting module 214 can be adjusted according to the processing requirement, so as to improve the force effect of the riveting module 214 on the riveting ring 313, and ensure the uniform deformation of the riveting ring 313.

[0091] It is understood by those of ordinary skill in the art that the above-mentioned embodiments are specific cases for implementing the present disclosure, and in actual applications, various changes can be made in form and details without departing from the scope of the present disclosure.

Claims

1. A swing arm assembly method, characterized by, The swing arm assembly method comprises: the swing arm is pre-assembled and positioned on the support assembly; the second pressing unit extrudes the pressing area on the upper end surface of the pressing ring of the swing arm; the riveting module rotates around the central axis of the pressing ring and moves vertically to extrude the riveting ring of the swing arm to deform towards the pressing ring; wherein the pressing area is located on the side of the pressing ring away from the driving part providing vertical movement of the riveting module; the riveting module rotates around the central axis of the pressing ring and moves vertically to extrude the riveting ring of the swing arm to deform towards the pressing ring; wherein the pressing area is located on the side of the pressing ring away from the driving part providing vertical movement of the riveting module; the riveting module rotates around the central axis of the pressing ring and moves vertically at a first speed to extrude the riveting ring of the swing arm to deform towards the pressing ring; wherein the riveting ring is spaced from the pressing ring, and the riveting module moves vertically at the first speed; based on the deformation of the riveting ring to abut against the pressing ring, the riveting module rotates around the central axis of the pressing ring and moves vertically at a second speed to extrude the riveting ring of the swing arm to deform towards the pressing ring; wherein the first speed is greater than the second speed; when the extrusion force applied by the riveting module in the rotating direction varies by more than a set value, the second pressing unit increases the extrusion force on the pressing ring to the point where the deformed part of the riveting ring abuts against the pressing ring; 1 / 3 < S1 / S2 < 2 / 3; wherein S1 is the area of the pressing area, and S2 is the area of the upper end surface of the pressing ring.

2. The swing arm assembly method of claim 1, wherein: the pre-assembly of the swing arm comprises: moving the swing arm to the support assembly; moving the ball and the buffer shell through the riveting ring into the installation pit; wherein the buffer shell is wrapped around the outer surface of the ball; the pressing ring is sleeved on the outer circumferential side of the end of the ball close to the swing lever.

3. The swing arm assembly method of claim 2, wherein: the support assembly comprises a positioning seat and a first pressing unit; moving the swing arm to the support assembly comprises: moving the swing arm to the positioning seat; positioning and clamping the swing arm comprises: the first pressing unit applies a force to the swing arm towards the positioning seat.

4. The swing arm assembly method of claim 1, wherein: when the extrusion force applied by the riveting module in the rotating direction varies by more than a set value, the second pressing unit increases the extrusion force on the pressing ring to the point where the deformed part of the riveting ring abuts against the pressing ring comprises: when the extrusion force applied by the riveting module in the rotating direction varies by more than a set value, the second pressing unit increases the extrusion force on the pressing ring and continues to obtain the variation of the extrusion force applied by the riveting module in the rotating direction; when the extrusion force applied by the riveting module in the rotating direction varies by less than or equal to the set value and the riveting ring deforms to abut against the pressing ring, the riveting module stops vertical movement and rotates around the central axis of the pressing ring for a set time.

5. The swing arm assembly method of claim 4, wherein, when the variation of the pressing force applied by the riveting module in the rotation direction thereof is greater than a set value, the second pressing unit increases the pressing force applied to the pressing ring to the point at which the deformed portion of the riveting ring abuts against the pressing ring, and further comprising: when the variation of the pressing force applied by the riveting module in the rotation direction thereof is greater than the set value, the fifth driving portion drives the lower end surface of the riveting module to move downward to the position at which the minimum pressing force is detected; when the fifth driving portion drives the lower end surface of the riveting module to move downward to the position at which the minimum pressing force is detected to the point at which the variation of the pressing force applied by the riveting module in the rotation direction thereof is less than or equal to the set value, the third driving portion drives the riveting module to move downward to the point at which the riveting ring is deformed to abut against the pressing ring; and the riveting module is kept rotating around the central axis of the pressing ring for a second set time.

6. The swing arm assembly method of claim 5, wherein, the swing arm assembly method further comprises: when the fifth driving portion drives the lower end surface of the riveting module to move downward to the position at which the minimum pressing force is detected to the point at which the variation of the pressing force applied by the riveting module in the rotation direction thereof is greater than the set value, an alarm is issued and the riveting module is moved upward. The swing arm assembly system is applied to the swing arm assembly method of any one of claims 1-6; the swing arm assembly system comprises: a swing arm comprising an arm base unit and a swing lever unit; the arm base unit comprises an arm base body, a mounting pit, and a riveting ring; the mounting pit is recessed from the outer circumferential surface of the arm base body in a direction away from the outer circumferential surface of the arm base body, forming a shell with an open end; the riveting ring is connected to the open end of the arm base body; the swing lever unit comprises a swing lever, a ball, a pressing ring, and a buffer shell; one end of the swing lever is connected to the ball, and the other end extends away from the ball; the pressing ring is sleeved on the outer circumferential surface of the ball; the pressing ring is arranged at the end of the ball close to the swing lever; and the buffer shell is wrapped around the outer circumferential surface of the ball; a support assembly for placing and positioning the swing arm; a riveting assembly comprising a riveting unit and a second pressing unit; the riveting unit comprises a third driving portion and a riveting module; the third driving portion is arranged on one side of the riveting module in the horizontal direction; the third driving portion is drivingly connected to the riveting module; the riveting module is used to apply a pressing force to the riveting ring; and the second pressing unit is used to apply a force to the pressing ring in the direction close to the ball. ​ ​ ​ ​ ​ 7. A swing arm assembly system characterized by, ​ ​ ​ ​ The working state of the swing arm assembly system includes: the swing arm is positioned and clamped on the support assembly, the second pressing unit moves the ball and the buffer shell through the riveting ring into the installation pit, the second pressing unit abuts against the pressing area of the pressing ring to move the pressing ring into the surrounding space of the riveting ring and apply a force to the pressing ring in the direction close to the ball, the riveting module rotates around the central axis of the pressing ring, and the third driving part drives the riveting module to move vertically to extrude the riveting ring of the swing arm in the direction close to the pressing ring to deform; wherein the pressing area is located on the side of the pressing ring away from the third driving part.

8. The swing arm assembly system according to claim 7, characterized in that, the riveting unit comprises a fifth driving part; the fifth driving part is drivingly connected with the riveting module; and the fifth driving part is used to drive the partial lower end surface of the riveting module to move upward or downward.

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