Universal joint assembly method and system

Abstract

The invention relates to the technical field of assembly, in particular to a universal joint assembly method and system. The method comprises the step of triggering based on an assembly instruction to drive the retainer to move towards the mounting part in the direction from the clamping groove to the mounting part. And on the basis that the inner circumferential surface of the retainer abuts against the outer circumferential surface of the mounting part and the retainer is located on the side, close to the clamping groove, of the mounting part, the press-fitting unit drives the retainer to move in the direction from the clamping groove to the mounting part till the retainer stops. And on the basis that the retainer stops, the detection module is driven to move in the direction from the clamping groove to the mounting part. And on the basis that the detection module abuts against the snap spring, the relative position of the detection module and the snap spring is obtained. And obtaining a detection result of the snap spring based on the relative position of the detection module and the snap spring. Therefore, the problem of how to improve the assembling efficiency of the universal joint is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of assembly, and in particular to a universal joint assembly method and system. Background Art

[0002] After the universal joint and the adapter are assembled, the retaining ring can be combined with the adapter to form a closed space to prevent foreign matter from entering and causing negative effects. During the assembly process, there are certain requirements for the diameter and installation position of the retaining spring. When the retaining spring is correctly installed, the adapter cooperates with the universal joint, and the retaining spring can limit the relative position of the adapter and the universal joint along the axial direction of the universal joint. If the installation position of the retaining spring is inaccurate or the diameter of the retaining spring is not in compliance, the relative axial position cannot be correctly limited and the adapter cannot be assembled with the universal joint. Therefore, it is necessary to detect the position and diameter of the retaining spring.

[0003] However, currently, the press-fitting of the retainer and the detection of the retainer are performed separately, which is inefficient. Therefore, a tool is used to integrate the functions of press-fitting the retainer and detecting the retainer. However, currently, the retainer can only be detected after the retainer is installed. If the retainer is stuck for various reasons, the retainer cannot be detected, resulting in low efficiency. Summary of the invention

[0004] In order to solve the problem of how to improve the efficiency of universal joint assembly, the present invention provides a universal joint assembly method and system.

[0005] In a first aspect, the present invention provides a universal joint assembly method, comprising:

[0006] Step S10, based on the assembly instruction trigger, driving the retaining ring to move toward the mounting portion along the direction from the engaging groove to the mounting portion;

[0007] Step S20, based on the inner circumference of the retaining ring abutting against the outer circumference of the mounting portion and the retaining ring being located on the side of the mounting portion close to the engaging groove, the press-fitting unit drives the retaining ring to move along the direction from the engaging groove to the mounting portion until the retaining ring stops; wherein the force used by the press-fitting unit to drive the retaining ring to move is a first driving force;

[0008] Step S30, based on the stop of the retaining ring, driving the detection module to move along the direction from the engaging groove to the mounting portion; wherein the engaging groove extends from the outer peripheral surface of the shaft toward the central axis of the shaft; the inner diameter of the retaining ring is larger than the inner diameter of the engaging groove and smaller than the minimum outer diameter of the shaft; the outer diameter of the retaining ring is larger than the minimum outer diameter of the shaft; the inner diameter of the detection module is larger than the minimum outer diameter of the shaft;

[0009] Step S40, based on the detection module abutting against the snap spring, obtaining the relative position of the detection module and the snap spring;

[0010] Step S50, obtaining a detection result of the retaining spring based on the relative position of the detection module and the retaining spring.

[0011] In some embodiments, S1>S2; wherein S1 is the stroke of the detection module moving along the engaging groove to the mounting portion after the bottom end of the detection module is flush with the top end of the retaining spring; S2 is the stroke of the retaining ring driven by the press-fitting unit from the mounting portion close to the engaging groove side along the engaging groove to the mounting portion until the retaining ring stops.

[0012] In some embodiments, step S20 includes:

[0013] Step S21, based on the inner circumference of the retaining ring abutting against the outer circumference of the mounting portion and the retaining ring being located on the side of the mounting portion close to the engaging groove, the press-fitting unit drives the retaining ring to move along the engaging groove to the mounting portion;

[0014] Step S22, based on the press-fitting unit driving the retaining ring to move along the direction from the engaging groove to the mounting portion, a plurality of pressure values ​​between the press-fitting unit and the retaining ring in a circumferential direction are obtained;

[0015] Step S23, adjusting the driving force of the press-fitting unit in the circumferential direction based on a plurality of pressure values ​​between the press-fitting unit and the retaining ring in the circumferential direction;

[0016] Step S24, the retaining ring stops moving based on the difference between any two pressure values ​​between the press-fitting unit and the retaining ring in the circumferential direction being adjusted to be less than a pressure threshold and the resistance between the retaining ring and the mounting portion being greater than the first driving force.

[0017] In some embodiments, step S23 includes:

[0018] Step S231, based on a plurality of pressure values ​​between the press-fitting unit and the retaining ring in the circumferential direction, obtaining a difference between any two pressure values ​​between the press-fitting unit and the retaining ring in the circumferential direction;

[0019] Step S232, based on the difference between any two pressure values ​​between the press-fitting unit and the retaining ring in the circumferential direction being greater than or equal to a pressure threshold, increasing the driving force on the side with the maximum pressure value between the press-fitting unit and the retaining ring;

[0020] Step S233: based on the difference between any two pressure values ​​between the press-fitting unit and the retaining ring in the circumferential direction being less than a pressure threshold, the driving force on the side with the maximum pressure value between the press-fitting unit and the retaining ring is restored to the first driving force.

[0021] In some embodiments, the S30 includes:

[0022] Step S31, based on the press-fitting unit driving the retaining ring to move to a stop, obtaining a relative position between the retaining ring and the mounting portion;

[0023] Step S32, based on the relative position of the retaining ring and the mounting portion, that is, one end of the retaining ring away from the engaging groove abuts against one end of the mounting portion away from the engaging groove, driving the press-fitting unit to apply a second driving force to the retaining ring;

[0024] Step S33, based on the press-fitting unit applying the second driving force to the retaining ring, the press-fitting unit is driven to rotate around the central axis of the press-fitting unit by a first set angle;

[0025] Step S34, based on driving the press-fitting unit to rotate about the central axis of the press-fitting unit by a first set angle, the press-fitting unit stops applying pressure to the retaining ring;

[0026] Step S35, the retaining ring stops moving based on the pressing unit stopping applying pressure to the retaining ring;

[0027] Step S36, based on the guard ring stopping moving, driving the detection module to move along the direction from the engaging groove to the mounting portion.

[0028] In some embodiments, the step S50:

[0029] Step S51, based on the relative position of the detection module and the retaining spring, obtaining the positional relationship between the detection module and the retaining spring;

[0030] Step S52: based on the positional relationship between the detection module and the retaining spring being a first relationship, the detection result of the retaining spring is a first abnormal state; wherein the first relationship includes the bottom end of the detection module abutting against the top end of the retaining spring.

[0031] In some embodiments, the universal joint assembly method further includes step S61, and the step S61 includes:

[0032] Step S611, based on the detection result of the clip being in a first abnormal state, driving the detection module to move a first set distance along the direction from the mounting portion to the engagement groove;

[0033] Step S612, based on the detection module moving a first set distance along the direction from the mounting portion to the engaging slot, driving the press-fitting unit to move a second set distance along the direction from the mounting portion to the engaging slot;

[0034] Step S613, based on the pressing unit moving a second set distance from the mounting portion to the engaging groove, driving the pressing unit to rotate around the central axis of the shaft by a second set angle;

[0035] Step S614, based on the pressing unit rotating about the central axis of the shaft by a second set angle, driving the pressing unit to move toward the retaining ring;

[0036] Step S615, based on the pressing unit moving to a stop, driving the detection module to move along the engaging groove to the mounting portion;

[0037] Step S616, based on the abutment between the detection module and the retaining spring, obtaining a relative position relationship between the detection module and the retaining spring;

[0038] Step S617: acquiring a detection result of the retaining spring based on the relative position relationship between the detection module and the retaining spring.

[0039] In some embodiments, the step S50 further includes:

[0040] Step S53, based on the positional relationship between the detection module and the retaining spring being a second relationship, the detection result of the retaining spring is in a qualified state; wherein, the second relationship includes the first detection part of the detection module being sleeved on the outer peripheral side of the retaining spring, and the second detection part of the detection module being located at an end of the retaining spring away from the mounting part; the inner diameter of the first detection part is larger than the inner diameter of the second detection part.

[0041] In some embodiments, the step S50 further includes:

[0042] Step S54, based on the positional relationship between the detection module and the retaining spring being a third relationship, the detection result of the retaining spring is a second abnormal state; wherein, the third relationship includes the second detection part of the detection module being sleeved on the outer peripheral side of the retaining spring, and the first detection part of the detection module being located at one end of the retaining spring close to the mounting part; the inner diameter of the first detection part is larger than the inner diameter of the second detection part.

[0043] In a second aspect, the present invention provides a universal joint system, wherein the universal joint assembly system is applied to any universal joint assembly method in the first aspect, and the universal joint assembly system comprises:

[0044] A tooling assembly, the tooling assembly comprises a press-fitting unit, a detection unit, and a main unit; the press-fitting unit is configured as a tubular body; the detection unit comprises a guide module and a detection module; the guide module is configured as a tubular body; the detection module is configured as a tubular body; the guide module is fixedly connected to the press-fitting unit along the radial direction of the guide module; the outer peripheral wall of the detection module is slidably connected to the inner peripheral wall of the guide module; the main unit comprises a base, a first driving part, and a second driving part; the base is detachably connected to the first driving part and the second driving part respectively; the first driving part is drivingly connected to the press-fitting unit; the second driving part is drivingly connected to the detection module;

[0045] A shaft assembly, the shaft assembly comprises a shaft unit, a retaining ring, and a retaining ring; the shaft unit comprises a shaft rod, a mounting portion, and a snap-fitting groove; the mounting portion and the shaft rod are fixedly connected in sequence along the axial direction of the shaft rod; the inner diameter of the retaining ring is adapted to the outer diameter of the mounting portion; the snap-fitting groove extends from the outer peripheral surface of the shaft rod toward the central axis of the shaft rod; the inner diameter of the retaining ring is larger than the inner diameter of the snap-fitting groove and smaller than the outer diameter of the shaft rod; the outer diameter of the retaining ring is larger than the minimum outer diameter of the shaft rod;

[0046] The universal joint assembly method includes a working state; the working state includes the shaft unit being detachably connected to the base on a side away from the engagement groove; the first driving unit drives the press-fitting unit to move until the inner circumference of the press-fitting unit abuts against the outer circumference of the shaft rod, and the inner circumference of the guide module and the outer circumference of the shaft rod are spaced apart; the press-fitting unit abuts against the guard ring at one end away from the guide module; the inner circumference of the guard ring abuts against the outer circumference of the mounting portion; the guard ring is located on a side of the mounting portion close to the engagement groove; the retaining spring is disposed in the engagement groove; the second driving unit drives the detection module to move until the detection module is sleeved on the outer circumference of the retaining spring.

[0047] In some embodiments, the detection module includes a first detection portion and a second detection portion; the first detection portion and the second detection portion are fixedly connected along the axial direction of the first detection portion; the inner diameter of the first detection portion is greater than the inner diameter of the second detection portion; the inner diameter of the second detection portion is greater than the minimum outer diameter of the shaft;

[0048] The working state also includes the first detection portion being sleeved on the outer peripheral side of the clamping spring, and the second detection portion being located on a side of the clamping spring away from the mounting portion.

[0049] In order to solve the problem of how to improve the efficiency of universal joint assembly, the present invention has the following advantages:

[0050] When the inner circumference of the retainer abuts against the outer circumference of the mounting portion and the retainer is located on the side of the mounting portion close to the snap-fit ​​groove, the press-fit unit can drive the retainer to move from the snap-fit ​​groove to the mounting portion until the retainer stops. As long as the retainer stops, the detection module can be driven to move from the snap-fit ​​groove to the mounting portion. The detection module abuts against the snap spring, and the relative position of the detection module and the snap spring is obtained, so as to detect whether the diameter of the snap spring meets the standard, thereby improving the efficiency of universal joint assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 A flow chart showing a method for assembling a universal joint according to an embodiment;

[0052] Figure 2 A schematic diagram of a universal joint assembly system according to an embodiment is shown;

[0053] Figure 3 A schematic diagram of a shaft assembly of one embodiment is shown;

[0054] Figure 4 A schematic diagram of a tooling assembly according to an embodiment is shown.

[0055] Figure markings: tooling assembly 01; press-fitting unit 11; press-fitting part 111; positioning part 112; detection unit 12; guide module 121; detection module 122; first detection part 1221; second detection part 1222; detection end cover 1223; main unit 13; base 131; first drive part 132; second drive part 133; shaft assembly 02; shaft unit 21; shell 211; mounting part 212; shaft rod 213; engaging groove 214; retaining spring 22; guard ring 23. DETAILED DESCRIPTION

[0056] 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, rather than implying any limitation on the scope of the present disclosure.

[0057] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0058] In this embodiment, after the universal joint and the adapter are assembled, the retaining ring can be combined with the adapter to form a closed space to prevent foreign matter from entering and causing negative effects. When the retaining spring 22 is correctly installed, the adapter cooperates with the universal joint, and the retaining spring 22 can limit the relative position of the adapter and the universal joint along the axial direction of the universal joint. If the installation position of the retaining spring 22 is inaccurate or the diameter of the retaining spring 22 is not in compliance, the axial relative position cannot be correctly limited and the adapter cannot be assembled with the universal joint. Therefore, it is necessary to detect the position and diameter of the retaining spring 22.

[0059] However, currently, the retaining ring 23 needs to be installed before the spring 22 can be inspected. If the retaining ring 23 is stuck due to various reasons, the spring 22 cannot be inspected, resulting in low efficiency. Therefore, in order to solve the above problems, the present invention provides a universal joint assembly method and system. The universal joint assembly system can be applied to the universal joint assembly method, such as Figure 2 As shown, the universal joint assembly system may include a tooling assembly 01 and a shaft assembly 02 .

[0060] like Figure 4 As shown, the tooling assembly 01 may include a press-fitting unit 11, a detection unit 12, and a main unit 13. The press-fitting unit 11 may be configured as a tubular body. The detection unit 12 may include a guide module 121 and a detection module 122. The guide module 121 may be configured as a tubular body, and the detection module 122 may be configured as a tubular body. The guide module 121 may be fixedly connected to the press-fitting unit 11 along the radial direction of the guide module 121. The outer peripheral wall of the detection module 122 may be slidably connected to the inner peripheral wall of the guide module 121. The main unit 13 may include a base 131, a first driving part 132, and a second driving part 133. The base 131 may be detachably connected to the first driving part 132 and the second driving part 133, respectively, the first driving part 132 may be drivingly connected to the press-fitting unit 11, and the second driving part 133 may be drivingly connected to the detection module 122.

[0061] like Figure 3 As shown, the shaft assembly 02 may include a shaft unit 21, a retaining ring 22, and a retaining ring 23. The shaft unit 21 may include a shaft rod 213, a mounting portion 212, and a snap-fit ​​groove 214. The mounting portion 212 and the shaft rod 213 may be fixedly connected in sequence along the axial direction of the shaft rod 213. The inner diameter of the retaining ring 23 may be adapted to the outer diameter of the mounting portion 212. The snap-fit ​​groove 214 may extend from the outer peripheral surface of the shaft rod 213 toward the central axis of the shaft rod 213. The inner diameter of the retaining ring 22 may be larger than the inner diameter of the snap-fit ​​groove 214 and smaller than the outer diameter of the shaft rod 213, and the outer diameter of the retaining ring 22 may be larger than the minimum outer diameter of the shaft rod 213.

[0062] like Figure 1 As shown, the universal joint assembly method may include steps S10 to S50, and steps S10 to S50 may be described in detail below.

[0063] In step S10 , based on the assembly instruction trigger, the retaining ring 23 can be driven to move toward the mounting portion 212 along the engagement groove 214 , so that the inner circumference of the retaining ring 23 is sleeved on the outer circumference of the shaft 213 , preparing for the press-fitting of the retaining ring 23 .

[0064] In step S20, the press-fitting unit 11 may drive the retaining ring 23 to move from the engaging groove 214 to the mounting portion 212 until the retaining ring 23 stops, based on the inner circumference of the retaining ring 23 abutting against the outer circumference of the mounting portion 212 and the retaining ring 23 being located on the side of the mounting portion 212 close to the engaging groove 214. The force used by the press-fitting unit 11 to drive the retaining ring 23 to move may be a first driving force, and when the resistance encountered by the press-fitting unit 11 when pressing down is greater than the first driving force, the press-fitting unit 11 stops pressing down.

[0065] Step S30, based on the stop of the retaining ring 23, the stop of the retaining ring 23 may include a first state and a second state, and the first state may include Figure 2 The retaining ring 23 shown is flush with the mounting portion 212. The second state may include that when the retaining ring 23 moves along the direction from the engaging groove 214 to the mounting portion 212, the retaining ring 23 cannot move to the ideal position to engage with the mounting portion 212 due to foreign matter or other reasons, but cannot continue to be pressed down. At this time, whether the retaining ring 23 is in the first state or the second state, the detection module 122 can be driven to move along the direction from the engaging groove 214 to the mounting portion 212. The engaging groove 214 can extend from the outer peripheral surface of the shaft 213 toward the central axis of the shaft 213. The inner diameter of the retaining ring 22 is larger than the inner diameter of the engaging groove 214 and smaller than the minimum outer diameter of the shaft 213, and the outer diameter of the retaining ring 22 is larger than the minimum outer diameter of the shaft 213, so that part of the retaining ring 22 can be located in the space surrounded by the engaging groove 214, and the other part of the retaining ring 22 can be located outside the space surrounded by the engaging groove 214. The retaining spring 22 in the space surrounded by the engaging groove 214 abuts against the engaging groove 214, and the portion of the retaining spring 22 outside the space surrounded by the engaging groove 214 abuts against the adapter component, thereby limiting the axial position of the shaft assembly 02 and the adapter component along the shaft assembly 02. The inner diameter of the detection module 122 may be greater than the minimum outer diameter of the shaft rod 213, so that when the detection module 122 moves from the engaging groove 214 to the mounting portion 212, the inner circumferential surface of the detection module 122 may abut against the outer circumferential surface of the retaining spring 22 or the lower end surface of the detection module 122 may abut against the upper end surface of the retaining spring 22, thereby ensuring that the detection module 122 can detect the retaining spring 22 to prevent the diameter of the retaining spring 22 from not meeting the requirements.

[0066] In step S40 , the relative position of the detection module 122 and the retaining spring 22 may be acquired based on the abutment between the detection module 122 and the retaining spring 22 .

[0067] Step S50, based on the relative position of the detection module 122 and the retaining spring 22, the detection result of the retaining spring 22 is obtained, so that no matter whether the retaining ring 23 is pressed into place or not (pressing into place means that the lower end surface of the retaining ring 23 is flush with the lower end surface of the mounting portion 212), it is possible to detect whether the diameter of the retaining spring 22 meets the standard, thereby improving the assembly efficiency of the universal joint.

[0068] In this embodiment, S1>S2. Among them, S1 is the stroke of the detection module 122 moving along the engaging groove 214 to the mounting portion 212 after the bottom end of the detection module 122 is flush with the top end of the retaining spring 22, that is, the stroke that can be moved downward after the lower end surface of the detection module 122 is flush with the top surface of the retaining spring 22. S2 is the stroke that the press-fitting unit 11 drives the retaining ring 23 to move from the side of the mounting portion 212 close to the engaging groove 214 along the engaging groove 214 to the mounting portion 212 until the retaining ring 23 stops, that is, the maximum stroke that can be moved downward after the upper end surface of the press-fitting unit 11 abuts against the lower end surface of the retaining ring 23. When the press-fitting unit 11 is driven to make the lower end surface of the retaining ring 23 flush with the lower end surface of the mounting portion 212, the moving distance of S2 is relatively large. When the retaining ring 23 is abnormal, that is, the retaining ring 23 is tilted or a foreign object is stuck on the retaining ring 23, the moving distance of S2 is small, and even when the mounting portion 212 and the retaining ring 23 are just in contact, the resistance of the retaining ring 23 to move downward is greater than the first driving force, so that the retaining ring 23 cannot move downward, resulting in S2 being 0. When S2 is 0, the lower end surface of the detection module 122 can also be flush with the top surface of the shaft 213, and then the detection module 122 is driven to move toward the mounting portion 212. In this way, by limiting the stroke, the retaining ring 23 can be pressed into any position of the mounting portion 212, and the retaining spring 22 can be detected, thereby improving the efficiency of universal joint assembly.

[0069] In this embodiment, the tooling assembly 01 may further include a sensor unit, which is detachably connected to the press-fitting unit 11. The sensor unit may obtain a pressure value between the press-fitting unit 11 and the retaining ring 23.

[0070] Step S20 of the universal joint assembly method may further include steps S21 to S24, and steps S21 to S24 may be described in detail below.

[0071] In step S21, based on the inner circumference of the retaining ring 23 abutting against the outer circumference of the mounting portion 212 and the retaining ring 23 being located on the side of the mounting portion 212 close to the engaging groove 214, the press-fitting unit 11 can drive the retaining ring 23 to move along the engaging groove 214 to the mounting portion 212, i.e., press-fit the retaining ring 23.

[0072] Step S22, based on the press-fitting unit 11 driving the guard ring 23 to move along the direction from the engaging groove 214 to the mounting portion 212, the sensing unit can obtain multiple pressure values ​​between the press-fitting unit 11 and the guard ring 23 in the circumferential direction, so that the abutment condition between the upper end surface of the guard ring 23 and the lower end surface of the press-fitting unit 11 can be judged through the multiple pressure values.

[0073] In step S23 , the driving force of the press-fitting unit 11 in the circumferential direction may be adjusted based on a plurality of pressure values ​​between the press-fitting unit 11 and the retaining ring 23 in the circumferential direction.

[0074] Step S24, based on the adjustment to the difference between any two pressure values ​​between the press-fitting unit 11 and the retaining ring 23 in the circumferential direction being less than the pressure threshold and the resistance between the retaining ring 23 and the mounting portion 212 being greater than the first driving force, the retaining ring 23 stops moving. In this way, when the press-fitting unit 11 drives the retaining ring 23 to move from the mounting portion 212 close to the engaging groove 214 side along the engaging groove 214 to the mounting portion 212, if the lower end surface of the press-fitting unit 11 is unevenly worn, or the minimum angle between the lower end surface of the press-fitting unit 11 and the upper end surface of the retaining ring 23 is greater than the set angle, which can be 3° to 5°, resulting in a large difference between any two pressure values ​​between the press-fitting unit 11 and the retaining ring 23 in the circumferential direction, the retaining ring 23 can be first allowed to move in the circumferential direction. The retaining ring 23 is in contact with the press-fitting unit 11 as much as possible within a relatively short downward movement, so that each circumferential portion of the retaining ring 23 is subjected to the same force until the resistance between the retaining ring 23 and the mounting portion 212 is greater than the first driving force and the retaining ring 23 stops moving. This prevents the upper end surface of the retaining ring 23 from being unevenly worn when only part of the retaining ring 23 is in contact with the press-fitting unit 11 and pressed down for a long time, resulting in a gap between the upper end surface of the retaining ring 23 and the adapter component when the universal joint is assembled after completion.

[0075] In this embodiment, step S23 of the universal joint assembly method may further include steps S231 to S233, and steps S231 to S233 may be described in detail below.

[0076] Step S231, based on multiple pressure values ​​between the press-fitting unit 11 and the retaining ring 23 in the circumferential direction, the difference between any two pressure values ​​between the press-fitting unit 11 and the retaining ring 23 in the circumferential direction can be obtained. Thus, it is determined whether the upper end surface of the retaining ring 23 is flush with the lower end surface of the press-fitting unit 11 by the pressure difference.

[0077] Step S232, based on the fact that the difference between any two pressure values ​​between the press-fitting unit 11 and the retaining ring 23 in the circumferential direction is greater than or equal to the pressure threshold, that is, the minimum angle between the lower end surface of the retaining ring 23 and the lower end surface of the mounting portion 212 is greater than the set angle, thereby increasing the driving force on the side with the maximum pressure value between the press-fitting unit 11 and the retaining ring 23, and reducing the local contact time between the lower end surface of the press-fitting unit 11 and the upper end surface of the retaining ring 23. The upper end surface of the retaining ring 23 can also be made parallel or close to parallel with the lower end surface of the press-fitting unit 11, and parallel or close to parallel means that the minimum angle between the upper end surface of the retaining ring 23 and the lower end surface of the press-fitting unit 11 is less than the set angle.

[0078] Step S233, based on the fact that the difference between any two pressure values ​​between the press-fitting unit 11 and the retaining ring 23 in the circumferential direction is less than the pressure threshold, that is, the upper end surface of the retaining ring 23 is parallel or nearly parallel to the lower end surface of the mounting portion 212, the driving force on the side with the maximum pressure value between the press-fitting unit 11 and the retaining ring 23 is restored to the first driving force, so that the downward pressure on the upper end surface of the retaining ring 23 is uniform during the press-fitting process, thereby preventing uneven wear between the upper end surface of the retaining ring 23 and the press-fitting unit 11, which may cause a gap in the fit with the adapter.

[0079] In this embodiment, the tooling assembly 01 may further include a sensor unit, which is detachably connected to the press-fitting unit 11. The sensor unit may obtain a pressure value between the press-fitting unit 11 and the retaining ring 23.

[0080] Step S30 of the universal joint assembly method may further include steps S31 to S36, and steps S31 to S36 may be described in detail below.

[0081] In step S31 , the press-fitting unit 11 drives the retaining ring 23 to move to a stop, and the sensing unit can obtain the relative position of the retaining ring 23 and the mounting portion 212 .

[0082] Step S32, based on the relative position of the guard ring 23 and the mounting portion 212, the end of the guard ring 23 away from the engagement groove 214 is in contact with the end of the mounting portion 212 away from the engagement groove 214. At this time, it can be determined that the press-fitting unit 11 may be unevenly worn due to long-term use, resulting in a minimum angle between the lower end face of the press-fitting unit 11 and the lower end face of the mounting portion 212 greater than a set angle, and the set angle may be 3° to 5°, so the press-fitting unit 11 is driven to apply a second driving force to the guard ring 23.

[0083] Step S33, based on the second driving force applied by the press-fitting unit 11 to the retainer 23, the press-fitting unit 11 is driven to rotate around the central axis of the press-fitting unit 11 by a first set angle, which can be 360° or 720°, so that the lower end surface of the press-fitting unit 11 near the mounting portion 212 abuts against the upper end surface of the retainer 23 near the engaging groove 214. As the press-fitting unit 11 rotates, the retainer 23 near the engaging groove 214 moves downward, so that the lower end surface of the retainer 23 is flush with the lower end surface of the mounting portion 212, thereby completing the assembly of the retainer 23. There may be lubricant at the abutment between the lower end surface of the press-fitting unit 11 and the upper end surface of the retainer 23, so that the damage to the surface of the retainer 23 can be reduced during the rotation of the press-fitting unit 11. If the lower end surface of the retaining ring 23 is not flush with the lower end surface of the mounting portion 212 , the retaining ring 23 is further pressed downward by the second driving force additionally applied to the retaining ring 23 by the press-fitting unit 11 .

[0084] Step S34 , based on driving the press-fitting unit 11 to rotate about the central axis of the press-fitting unit 11 by a first set angle, the press-fitting unit 11 stops applying pressure to the retaining ring 23 .

[0085] Step S35, based on the press-fitting unit 11 stopping applying pressure to the retaining ring 23, the retaining ring 23 stops moving, that is, the lower end surface of the retaining ring 23 is flush with the lower end surface of the mounting portion 212, and the press-fitting is completed.

[0086] Step S36 , based on the guard ring 23 stopping moving, the detection module 122 is driven to move along the direction from the engagement groove 214 to the mounting portion 212 , and the detection module 122 detects the size of the clip 22 .

[0087] In this embodiment, step S50 of the universal joint assembly method may further include step S51 and step S52. Step S51 and step S52 may be described in detail below.

[0088] Step S51 , based on the relative position of the detection module 122 and the retaining spring 22 , the positional relationship between the detection module 122 and the retaining spring 22 can be obtained.

[0089] Step S52, based on the positional relationship between the detection module 122 and the clip spring 22 being the first relationship, and the detection result of the clip spring 22 being the first abnormal state, it can be determined that the diameter of the clip spring 22 is too large, or part of the clip spring 22 is located outside the space surrounded by the engagement groove 214, and the other part of the clip spring 22 is located inside the space surrounded by the engagement groove 214, that is, the central axis of the clip spring 22 and the central axis of the engagement groove 214 are offset too much, resulting in the inability of the detection module 122 to continue to move toward the mounting portion 212, that is, the clip spring 22 does not meet the standard. Among them, the first relationship includes the bottom end of the detection module 122 abutting against the top end of the clip spring 22. At this time, the clip spring 22 does not meet the standard, and the adapter component cannot be installed with the clip spring 22.

[0090] In this embodiment, the universal joint assembly method further includes step S61, and step S61 may include steps S611 to S617. Steps S611 to S617 may be described in detail below.

[0091] In step S611, based on the detection result of the retaining spring 22 being the first abnormal state, the detection module 122 is driven to move a first set distance from the mounting portion 212 to the engagement slot 214, that is, the detection module 122 moves upward, and the lower end surface of the detection module 122 no longer abuts against the upper end surface of the retaining spring 22.

[0092] In step S612 , based on the detection module 122 moving a first set distance from the mounting portion 212 to the engaging groove 214 , the press-fitting unit 11 is driven to move a second set distance from the mounting portion 212 to the engaging groove 214 .

[0093] In step S613 , based on the press-fitting unit 11 moving a second set distance from the mounting portion 212 to the engaging groove 214 , the press-fitting unit 11 is driven to rotate around the central axis of the shaft 213 by a second set angle.

[0094] Step S614, based on the press-fitting unit 11 rotating about the central axis of the shaft 213 by a second set angle, the press-fitting unit 11 is driven to move toward the retaining ring 23. Since the inner circumference of the press-fitting unit 11 abuts against the outer circumference of the shaft 213, when the press-fitting unit 11 rotates about the central axis of the shaft 213, friction is generated, which can cause the retaining spring 22 to vibrate to a certain extent, and the vibration can correct the position of the retaining spring 22 to a certain extent.

[0095] Step S615, based on the fact that the press-fitting unit 11 moves to a stop, that is, the lower end surface of the press-fitting unit 11 abuts against the upper end surface of the retaining ring 23, and the inner peripheral wall of the retaining ring 23 is connected to the outer peripheral wall of the shaft 213, vibration will be generated again when it stops, and the position of the clip 22 is further corrected. Then the detection module 122 is driven to move along the engagement groove 214 to the mounting portion 212 to detect the size of the clip 22.

[0096] Step S616 , based on the detection module 122 abutting against the retaining spring 22 , the relative position relationship between the detection module 122 and the retaining spring 22 is obtained.

[0097] Step S617, based on the relative position relationship between the detection module 122 and the spring clip 22, the detection result of the spring clip 22 is obtained. In this way, after the spring clip 22 vibrates, the detection module 122 is moved again along the direction from the engagement groove 214 to the mounting portion 212 to detect the spring clip 22 to check whether the spring clip 22 meets the standard.

[0098] In this embodiment, step S50 may further include step S53, and step S53 will be described in detail below.

[0099] Step S53, based on the positional relationship between the detection module 122 and the retaining spring 22 being the second relationship, the detection result of the retaining spring 22 can be in a qualified state. When the detection result of the retaining spring 22 is in a qualified state, the adapter component cooperates with the retaining spring 22, so that the retaining spring 22 can limit the relative position of the adapter component and the shaft 213 along the axial direction of the shaft 213. Among them, the second relationship includes that the first detection portion 1221 of the detection module 122 is sleeved on the outer peripheral side of the retaining spring 22, and the second detection portion 1222 of the detection module 122 is located at an end of the retaining spring 22 away from the mounting portion 212. The inner diameter of the first detection portion 1221 is greater than the inner diameter of the second detection portion 1222.

[0100] In this embodiment, step S50 may further include step S54, and step S54 will be described in detail below.

[0101] Step S54, based on the positional relationship between the detection module 122 and the spring clip 22 being the third relationship, the detection result of the spring clip 22 may be the second abnormal state. When the detection result of the spring clip 22 is the second abnormal state, the spring clip 22 cannot limit the relative position of the adapter component and the shaft 213 along the axial direction of the shaft 213. The third relationship includes that the second detection portion 1222 of the detection module 122 is sleeved on the outer peripheral side of the spring clip 22, and the first detection portion 1221 of the detection module 122 is located at one end of the spring clip 22 close to the mounting portion 212. The inner diameter of the first detection portion 1221 is greater than the inner diameter of the second detection portion 1222. At this time, the spring clip 22 does not meet the standard, and the adapter component cannot be installed with the spring clip 22.

[0102] In this embodiment, the present invention provides a universal joint assembly system, which can be applied to any of the universal joint assembly methods implemented above, such as Figure 2 As shown, the universal joint assembly system may include a tooling assembly 01 and a shaft assembly 02 .

[0103] like Figure 4 As shown, the tooling assembly 01 may include a press-fitting unit 11, a detection unit 12, and a main unit 13. The press-fitting unit 11 may be configured as a tubular body. The detection unit 12 may include a guide module 121 and a detection module 122. The guide module 121 may be configured as a tubular body. The detection module 122 may be configured as a tubular body. The guide module 121 may be fixedly connected to the press-fitting unit 11 along the radial direction of the guide module 121. The outer peripheral wall of the detection module 122 may be slidably connected to the inner peripheral wall of the guide module 121, and the guide module 121 may guide the detection module 122 to move along a predetermined path, thereby ensuring the normal detection of the retaining spring 22. The main unit 13 may include a base 131, a first drive unit 132, and a second drive unit 133. The base 131 may be detachably connected to the first drive unit 132 and the second drive unit 133, respectively. The first driving part 132 can be connected to the press-fitting unit 11, and can drive the retaining ring 23 to move from the engaging groove 214 to the mounting part 212 to the mounting part 212, so as to press-fit the retaining ring 23. The second driving part 133 can be connected to the detection module 122, and can drive the detection module 122 to move from the engaging groove 214 to the mounting part 212, so as to detect the retaining ring 22.

[0104] like Figure 3As shown, the shaft assembly 02 may include a shaft unit 21, a retaining ring 22, and a retaining ring 23. The shaft unit 21 may include a shaft rod 213, a mounting portion 212, and a snap-fit ​​groove 214. The mounting portion 212 and the shaft rod 213 may be fixedly connected in sequence along the axial direction of the shaft rod 213. The inner diameter of the retaining ring 23 may be adapted to the outer diameter of the mounting portion 212. The snap-fit ​​groove 214 may extend from the outer peripheral surface of the shaft rod 213 toward the central axis of the shaft rod 213. The inner diameter of the retaining ring 22 may be larger than the inner diameter of the snap-fit ​​groove 214 and smaller than the outer diameter of the shaft rod 213. The outer diameter of the retaining ring 22 may be larger than the minimum outer diameter of the shaft rod 213. The lower end surface of the retaining ring 23 is flush with the lower end surface of the mounting portion 212, that is, the retaining ring 23 is snap-fitted with the mounting portion 212, and a closed space is formed with other components, thereby preventing foreign objects from the outside from entering the closed space. When the retaining spring 22 is in a qualified state and connected to other components, it can limit the movement of the shaft 213 and the connected components in the axial direction.

[0105] The universal joint assembly method may include a working state. The working state may include that the shaft unit 21 is detachably connected to the base 131 on the side away from the engaging groove 214. The first driving unit 132 may drive the press-fitting unit 11 to move until the inner circumference of the press-fitting unit 11 abuts against the outer circumference of the shaft rod 213, and the inner circumference of the guide module 121 and the outer circumference of the shaft rod 213 are arranged at intervals. The end of the press-fitting unit 11 away from the guide module 121 may abut against the retaining ring 23. The inner circumference of the retaining ring 23 may abut against the outer circumference of the mounting portion 212. The retaining ring 23 is located on the side of the mounting portion 212 close to the engaging groove 214. The retaining spring 22 may be arranged in the engaging groove 214. The second driving unit 133 drives the detection module 122 to move until the detection module 122 is sleeved on the outer circumference of the retaining spring 22. Thus, the retaining ring 23 may be installed by the press-fitting unit 11, and the detection module 122 detects whether the retaining ring 22 meets the standard.

[0106] In other embodiments, the press-fitting unit 11 includes a press-fitting portion 111 and a positioning portion 112, and the press-fitting portion 111 is fixedly connected to one end of the positioning portion 112 away from the engaging groove 214. The positioning portion 112 can allow the press-fitting portion 111 to drive the retaining ring 23 to move axially along the shaft 213 when the press-fitting portion 111 presses the retaining ring 23. The lower end surface of the press-fitting portion 111 can abut against the upper end surface of the retaining ring 23, and the upper end surface of the retaining ring is evenly stressed during the press-fitting process. The shaft unit 21 can also include a shell 211, and the shell 211 is fixedly connected to one end of the shaft 213 away from the engaging groove 214. The space enclosed by the shell 211 can be connected with other components.

[0107] In this embodiment, the detection module 122 may include a first detection portion 1221 and a second detection portion 1222. The first detection portion 1221 and the second detection portion 1222 may be fixedly connected along the axial direction of the first detection portion 1221. The inner diameter of the first detection portion 1221 may be greater than the inner diameter of the second detection portion 1222. The inner diameter of the second detection portion 1222 may be greater than the minimum outer diameter of the shaft 213. Thus, the first detection portion 1221 and the second detection portion 1222 may be used to determine whether the size of the clip 22 meets the standard. When the first detection portion 1221 is sleeved on the outer peripheral side of the clip 22, and the second detection portion 1222 is located at one end of the clip 22 away from the mounting portion 212, the diameter of the clip 22 meets the standard. When the first detection portion 1221 is sleeved on the outer peripheral side of the clip 22, the diameter of the clip 22 is too small and does not meet the standard. When the lower end surface of the second detection portion 1222 abuts against the upper end surface of the retaining spring 22 , the diameter of the retaining spring 22 is too large and does not meet the standard.

[0108] The working state may also include that the first detection portion 1221 is sleeved on the outer peripheral side of the clip 22, and the second detection portion 1222 may be located on the side of the clip 22 away from the mounting portion 212. In this way, the detection module 122 may detect whether the diameter of the clip 22 meets the standard.

[0109] In other embodiments, Figure 4 As shown, the detection module 122 may further include a detection end cap 1223, which is fixedly connected to a side of the second end cap away from the first end cap. When the detection module 122 detects the diameter of the retaining spring 22, if the diameter of the retaining spring 22 is smaller than the inner diameter of the second detection portion 1222, the detection end cap 1223 may prevent the shaft 213 from passing through the detection module 122. The detection end cap 1223 is provided with an air vent, and when the detection module 122 moves from the engaging groove 214 toward the mounting portion 212, pressure may be released through the air vent, thereby facilitating the movement of the detection module 122.

[0110] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. A universal joint assembly method, characterized in that: The universal joint assembly method comprises: Step S10, based on the assembly instruction trigger, driving the retaining ring to move toward the mounting portion along the direction from the engaging groove to the mounting portion; Step S20, based on the inner circumference of the retaining ring abutting against the outer circumference of the mounting portion and the retaining ring being located on the side of the mounting portion close to the engaging groove, the press-fitting unit drives the retaining ring to move along the direction from the engaging groove to the mounting portion until the retaining ring stops; wherein the force used by the press-fitting unit to drive the retaining ring to move is a first driving force; Step S30, based on the stop of the retaining ring, driving the detection module to move along the direction from the engaging groove to the mounting portion; wherein the engaging groove extends from the outer peripheral surface of the shaft toward the central axis of the shaft; the inner diameter of the retaining ring is larger than the inner diameter of the engaging groove and smaller than the minimum outer diameter of the shaft; the outer diameter of the retaining ring is larger than the minimum outer diameter of the shaft; the inner diameter of the detection module is larger than the minimum outer diameter of the shaft; Step S40, based on the detection module abutting against the snap spring, obtaining the relative position of the detection module and the snap spring; Step S50, obtaining a detection result of the retaining spring based on the relative position of the detection module and the retaining spring.

2. A universal joint assembly method according to claim 1, characterized in that: S1>S2; wherein S1 is the stroke of the detection module moving along the engagement groove to the mounting portion after the bottom end of the detection module is flush with the top end of the retaining spring; S2 is the stroke of the retaining ring driven by the press-fitting unit from the mounting portion close to the engagement groove side along the engagement groove to the mounting portion until the retaining ring stops.

3. A universal joint assembly method according to claim 1, characterized in that: The step S20 comprises: Step S21, based on the inner circumference of the retaining ring abutting against the outer circumference of the mounting portion and the retaining ring being located on the side of the mounting portion close to the engaging groove, the press-fitting unit drives the retaining ring to move along the engaging groove to the mounting portion; Step S22, based on the press-fitting unit driving the retaining ring to move along the direction from the engaging groove to the mounting portion, a plurality of pressure values ​​between the press-fitting unit and the retaining ring in a circumferential direction are obtained; Step S23, adjusting the driving force of the press-fitting unit in the circumferential direction based on a plurality of pressure values ​​between the press-fitting unit and the retaining ring in the circumferential direction; Step S24, the retaining ring stops moving based on the difference between any two pressure values ​​between the press-fitting unit and the retaining ring in the circumferential direction being adjusted to be less than a pressure threshold and the resistance between the retaining ring and the mounting portion being greater than the first driving force.

4. A universal joint assembly method according to claim 3, characterized in that: The step S23 comprises: Step S231, based on a plurality of pressure values ​​between the press-fitting unit and the retaining ring in the circumferential direction, obtaining a difference between any two pressure values ​​between the press-fitting unit and the retaining ring in the circumferential direction; Step S232, based on the difference between any two pressure values ​​between the press-fitting unit and the retaining ring in the circumferential direction being greater than or equal to a pressure threshold, increasing the driving force on the side with the maximum pressure value between the press-fitting unit and the retaining ring; Step S233: based on the difference between any two pressure values ​​between the press-fitting unit and the retaining ring in the circumferential direction being less than a pressure threshold, the driving force on the side with the maximum pressure value between the press-fitting unit and the retaining ring is restored to the first driving force.

5. A universal joint assembly method according to claim 1, characterized in that: The S30 includes: Step S31, based on the press-fitting unit driving the retaining ring to move to a stop, obtaining a relative position between the retaining ring and the mounting portion; Step S32, based on the relative position of the retaining ring and the mounting portion, that is, one end of the retaining ring away from the engaging groove abuts against one end of the mounting portion away from the engaging groove, driving the press-fitting unit to apply a second driving force to the retaining ring; Step S33, based on the press-fitting unit applying the second driving force to the retaining ring, the press-fitting unit is driven to rotate around the central axis of the press-fitting unit by a first set angle; Step S34, based on driving the press-fitting unit to rotate about the central axis of the press-fitting unit by a first set angle, the press-fitting unit stops applying pressure to the retaining ring; Step S35, the retaining ring stops moving based on the pressing unit stopping applying pressure to the retaining ring; Step S36, based on the guard ring stopping moving, driving the detection module to move along the direction from the engaging groove to the mounting portion.

6. A universal joint assembly method according to claim 1, characterized in that: The step S50: Step S51, based on the relative position of the detection module and the retaining spring, obtaining the positional relationship between the detection module and the retaining spring; Step S52: based on the positional relationship between the detection module and the retaining spring being a first relationship, the detection result of the retaining spring is a first abnormal state; wherein the first relationship includes the bottom end of the detection module abutting against the top end of the retaining spring.

7. A universal joint assembly method according to claim 6, characterized in that: The universal joint assembly method further comprises step S61, wherein step S61 comprises: Step S611, based on the detection result of the clip being in a first abnormal state, driving the detection module to move a first set distance along the direction from the mounting portion to the engagement groove; Step S612, based on the detection module moving a first set distance along the direction from the mounting portion to the engaging slot, driving the press-fitting unit to move a second set distance along the direction from the mounting portion to the engaging slot; Step S613, based on the pressing unit moving a second set distance from the mounting portion to the engaging groove, driving the pressing unit to rotate around the central axis of the shaft by a second set angle; Step S614, based on the pressing unit rotating about the central axis of the shaft by a second set angle, driving the pressing unit to move toward the retaining ring; Step S615, based on the pressing unit moving to a stop, driving the detection module to move along the engaging groove to the mounting portion; Step S616, based on the abutment between the detection module and the retaining spring, obtaining a relative position relationship between the detection module and the retaining spring; Step S617: acquiring a detection result of the retaining spring based on a relative position relationship between the detection module and the retaining spring.

8. A universal joint assembly method according to claim 6, characterized in that: The step S50 further includes: Step S53, based on the positional relationship between the detection module and the retaining spring being a second relationship, the detection result of the retaining spring is in a qualified state; wherein, the second relationship includes the first detection part of the detection module being sleeved on the outer peripheral side of the retaining spring, and the second detection part of the detection module being located at an end of the retaining spring away from the mounting part; the inner diameter of the first detection part is larger than the inner diameter of the second detection part.

9. A universal joint assembly method according to claim 6, characterized in that: The step S50 further includes: Step S54, based on the positional relationship between the detection module and the retaining spring being a third relationship, the detection result of the retaining spring is a second abnormal state; wherein, the third relationship includes the second detection part of the detection module being sleeved on the outer peripheral side of the retaining spring, and the first detection part of the detection module being located at one end of the retaining spring close to the mounting part; the inner diameter of the first detection part is larger than the inner diameter of the second detection part.

10. A universal joint assembly system, characterized in that: The universal joint assembly system is applied to a universal joint assembly method according to any one of claims 1 to 9, and the universal joint assembly system comprises: A tooling assembly, the tooling assembly comprises a press-fitting unit, a detection unit, and a main unit; the press-fitting unit is configured as a tubular body; the detection unit comprises a guide module and a detection module; the guide module is configured as a tubular body; the detection module is configured as a tubular body; the guide module is fixedly connected to the press-fitting unit along the radial direction of the guide module; the outer peripheral wall of the detection module is slidably connected to the inner peripheral wall of the guide module; the main unit comprises a base, a first driving part, and a second driving part; the base is detachably connected to the first driving part and the second driving part respectively; the first driving part is drivingly connected to the press-fitting unit; the second driving part is drivingly connected to the detection module; A shaft assembly, the shaft assembly comprises a shaft unit, a retaining ring, and a retaining ring; the shaft unit comprises a shaft rod, a mounting portion, and a snap-fitting groove; the mounting portion and the shaft rod are fixedly connected in sequence along the axial direction of the shaft rod; the inner diameter of the retaining ring is adapted to the outer diameter of the mounting portion; the snap-fitting groove extends from the outer peripheral surface of the shaft rod toward the central axis of the shaft rod; the inner diameter of the retaining ring is larger than the inner diameter of the snap-fitting groove and smaller than the outer diameter of the shaft rod; the outer diameter of the retaining ring is larger than the minimum outer diameter of the shaft rod; The universal joint assembly method includes a working state; the working state includes the shaft unit being detachably connected to the base on a side away from the engagement groove; the first driving unit drives the press-fitting unit to move until the inner circumference of the press-fitting unit abuts against the outer circumference of the shaft rod, and the inner circumference of the guide module and the outer circumference of the shaft rod are spaced apart; the press-fitting unit abuts against the guard ring at one end away from the guide module; the inner circumference of the guard ring abuts against the outer circumference of the mounting portion; the guard ring is located on a side of the mounting portion close to the engagement groove; the retaining spring is disposed in the engagement groove; the second driving unit drives the detection module to move until the detection module is sleeved on the outer circumference of the retaining spring.

11. A universal joint assembly system according to claim 10, characterized in that: The detection module comprises a first detection part and a second detection part; the first detection part and the second detection part are fixedly connected along the axial direction of the first detection part; the inner diameter of the first detection part is larger than the inner diameter of the second detection part; the inner diameter of the second detection part is larger than the minimum outer diameter of the shaft; The working state also includes the first detection portion being sleeved on the outer peripheral side of the clamping spring, and the second detection portion being located on a side of the clamping spring away from the mounting portion.

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