Assembly line and assembly method for automobile intermediate shaft assembly

Abstract

The invention relates to the technical field of automobile part assembly, and discloses an assembly line and an assembly method for an automobile intermediate shaft assembly. Comprising a ball bearing conveying module, a ball bearing feeding module, a protective sleeve assembling module, a first quantitative oiling module, a second quantitative oiling module, a retainer assembling module, a clamp spring assembling module, a sleeve assembling module, a pressing module, a transfer discharging module and a testing module. According to the automatic assembling machine, the protective sleeve, the retainer, the clamp spring, the sleeve and the ball journal can be automatically assembled, so that the assembling efficiency is greatly improved, manual operation is reduced, human errors are avoided, and the product quality is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts assembly, in particular to an automobile intermediate shaft assembly assembly line and an assembly method. Background Art

[0002] As a critical automotive component, the efficiency and quality of intermediate shaft assembly and performance testing significantly impact the performance and safety of the entire vehicle. Traditional intermediate shaft assembly and testing methods rely primarily on manual labor, which presents numerous challenges. First, the assembly process requires manual effort to assemble each component in the correct sequence, resulting in low assembly efficiency and a high risk of human error. This, combined with the lack of effective quality control mechanisms, makes it difficult to guarantee product quality.

[0003] Secondly, existing testing equipment usually adopts a single testing method and cannot perform multiple performance tests simultaneously, resulting in insufficient accuracy and comprehensiveness of test data.

[0004] In view of the above problems, this application is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide an automobile intermediate shaft assembly assembly line and assembly method, which integrates a multi-station, automated assembly line to improve assembly efficiency and product quality, reduce the workload of operators, ensure the stability and consistency of product quality, and solve the problem of low efficiency of traditional manual assembly.

[0006] The present invention is achieved through the following technical solutions.

[0007] An automobile intermediate shaft assembly line of the present invention comprises:

[0008] Ball shaft conveying module: includes a conveying track, a plurality of ball shaft positioning fixtures and a rotation drive assembly for driving the ball shaft positioning fixtures to rotate, and the ball shaft positioning fixtures can move on the conveying track;

[0009] Set in sequence:

[0010] Ball shaft loading module: used to load parts onto the ball shaft positioning tooling;

[0011] Protective cover assembly module: used to install the protective cover on the part;

[0012] The first quantitative oiling module is used to oil the parts after the protective cover is installed;

[0013] Cage assembly module: used to install the cage onto the oiled parts;

[0014] Circlip assembly module: used to install the circlip on the part:

[0015] The second quantitative oiling module: used to oil the parts;

[0016] Sleeve assembly module: used to install the sleeve onto the part;

[0017] Pressing module: used to press the sleeve and parts together:

[0018] Transfer unloading module: used to unload and transfer parts on the ball shaft positioning fixture.

[0019] Furthermore, the ball shaft loading module includes a first robotic arm assembly and a ball shaft material rack, the ball shaft material rack is used to place parts, and the first robotic arm assembly is used to transfer the parts in the material rack to the ball shaft positioning tooling.

[0020] Furthermore, the protective sleeve assembly module and the sleeve assembly module both include a feeding component, a mobile drive component and a clamping claw component. The feeding component is used to provide the protective sleeve / sleeve, and the mobile drive component is used to drive the clamping claw component to clamp the protective sleeve / sleeve and install it on the ball shaft.

[0021] Furthermore, the first quantitative oiling module and the second quantitative oiling module each include an oil spray nozzle and a height adjustment component, and the height adjustment component is used to adjust the height of the oil spray nozzle.

[0022] Furthermore, the retainer assembly module includes a second robotic arm assembly and a retainer material rack, and the second robotic arm assembly is used for installing the retainer.

[0023] Furthermore, the automobile intermediate shaft assembly line also includes a detection component for detecting whether the parts are qualified. The detection components are respectively arranged before and after the second robotic arm component, and defective products are transferred through the second robotic arm component and the transfer unloading module respectively.

[0024] Furthermore, the retaining spring assembly module includes a retaining spring feeding assembly, a positioning clamping assembly, a pushing assembly, a vacuum adsorption assembly, a compression spring assembly, a translation drive and a lifting drive. The lifting drive is connected to the translation drive, and the vacuum adsorption assembly and the compression spring assembly are both connected to the lifting drive. The positioning clamping assembly is provided with a positioning area and an adsorption area for receiving the material of the retaining spring feeding assembly. The pushing assembly is used to push the retaining spring from the positioning area to the adsorption area. The vacuum adsorption assembly is used to adsorb the retaining spring and place it on the part. The compression spring assembly presses the retaining spring down to the set position. After the pressing is completed, the rotation drive assembly drives the ball shaft positioning tooling to rotate at least one circle.

[0025] Furthermore, the automobile intermediate shaft assembly line also includes a cleaning module, which includes a cleaning brush lifting drive and a cleaning brush.

[0026] Furthermore, the automobile intermediate shaft assembly line also includes a testing module, and the testing module includes an electronic universal testing machine.

[0027] A method for assembling an automobile intermediate shaft assembly, based on the above-mentioned automobile intermediate shaft assembly assembly line, comprises the following steps:

[0028] Ball shaft loading;

[0029] Protective cover assembly;

[0030] Quantitative oiling;

[0031] Cage assembly;

[0032] Product testing: if the product is qualified, it will enter the next process; if the product is unqualified, the second robotic arm assembly will be used to unload it into the unqualified product box;

[0033] The circlip is assembled, the circlip feeding assembly feeds the circlip to the positioning area, the pushing assembly is used to push the circlip from the positioning area to the adsorption area, the vacuum adsorption assembly adsorbs the circlip, and the translation drive and lifting drive are used to move the vacuum adsorption assembly to place the circlip on the ball shaft. The lifting drive drives the compression spring assembly to press the circlip down to the set position. After the pressing is completed, the rotation drive assembly drives the ball shaft positioning tooling to rotate at least one circle to ensure that the circlip is completely entered into the circlip groove of the ball shaft, and then the compression spring assembly is separated from the ball shaft;

[0034] Quantitative oiling:

[0035] Casing assembly;

[0036] Casing pressing;

[0037] Product testing: if the product is qualified, the transfer unloading module will transfer the product to the testing station, and the test module will perform product performance testing. If the product is unqualified, the transfer unloading module will transfer the product to the unqualified product box;

[0038] Cleaning of ball shaft positioning fixture: Use the cleaning brush lifting drive to make the cleaning brush contact with the ball shaft positioning fixture, and rotate the drive assembly to drive the ball shaft positioning fixture to rotate for cleaning.

[0039] Beneficial effects of the present invention: In this solution, by providing a ball shaft feeding module, a protective sleeve assembly module, a first quantitative oiling module, a second quantitative oiling module, a cage assembly module, a retaining spring assembly module, a sleeve assembly module, a pressing module, a transfer unloading module, and a testing module, the automated assembly of an automobile intermediate shaft assembly is realized, and the protective sleeve, retaining frame, retaining spring, sleeve, and ball shaft can be automatically assembled, thereby greatly improving assembly efficiency, reducing manual operations, avoiding the occurrence of human errors, and significantly improving product quality. In addition, multiple performance tests can be performed simultaneously, thereby improving the accuracy and comprehensiveness of the test data and meeting the comprehensive performance test requirements of the intermediate shaft assembly.

[0040] The circlip assembly module achieves precise and stable installation of the circlip through a simple and ingenious structural design.

[0041] This solution sets up multiple sets of ball shaft positioning tooling and adopts a multi-station parallel operation mode, which overcomes the limitations of traditional single-process operation, eliminates the time delay of waiting for the completion of the previous process, shortens the production cycle, reduces production costs, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] The present invention will be further described below with reference to the accompanying drawings and examples.

[0044] Figure 1 It is a planar structural diagram of the automobile intermediate shaft assembly line of the present invention;

[0045] Figure 2 This is a schematic diagram of the overall structure of the automobile intermediate shaft assembly line;

[0046] Figure 3 A schematic diagram of the structure of the protective cover assembly module;

[0047] Figure 4 This is a schematic structural diagram of the first quantitative oiling module;

[0048] Figure 5 It is a structural diagram of the circlip assembly module;

[0049] Figure 6 This is a structural diagram of the circlip assembly module from another perspective;

[0050] Figure 7 It is a structural diagram of the pressing module;

[0051] Figure 8 It is a structural diagram of the cleaning module;

[0052] Figure 9 It is a structural diagram of the test module;

[0053] Figure 10 It is a structural diagram of the ball shaft conveying module. DETAILED DESCRIPTION

[0054] The following combination Figures 1-10 The present invention will be described in detail.

[0055] An automobile intermediate shaft assembly line of the present invention comprises:

[0056] Ball shaft conveying module 12: Figure 10 , including a conveying track 12-1, several ball shaft positioning tooling 12-2 and a rotation drive component for driving the ball shaft positioning tooling 12-2 to rotate. The ball shaft positioning tooling 12-2 can move on the conveying track 12-1. The conveying track 12-1 preferably adopts a chain track to drive the ball shaft positioning tooling 12-2 to switch between several workstations. The ball shaft positioning tooling 12-2 preferably adopts pneumatic or electric clamps to clamp the ball shaft 13. The rotation drive component is generally a motor or an electric torquer, which is used to drive the ball shaft positioning tooling 12-2 to rotate.

[0057] The ball shaft positioning tooling 12-2 moves to the following stations in sequence: ball shaft loading station, protective sleeve assembly station, quantitative oiling station, retainer assembly station, retainer assembly station, quantitative oiling station, sleeve assembly station, pressing module, transfer unloading station, and cleaning station.

[0058] Ball shaft loading module 1: Figure 2 , used to load parts onto the ball shaft positioning tooling 12-2, including a first robotic arm assembly 1-2 and a ball shaft material rack 1-1. The ball shafts are placed manually in the ball shaft material rack 1-1, and the first robotic arm assembly 1-2 is used to transfer the ball shafts in the material rack 1-1 to the ball shaft positioning tooling 12-2 for clamping.

[0059] Protective cover assembly module 2: Figure 3 , used to install the protective cover on the part; the protective cover assembly module 2 includes a feeding component, a mobile drive component and a clamping component, the feeding component is used to provide the protective cover, the mobile drive component is used to drive the clamping component to clamp the protective cover and install it on the ball shaft 13. In this embodiment, the feeding component adopts a vibration plate 2-1, the mobile drive component includes an X-axis mobile drive 2-2 and a Y-axis mobile drive 2-3, and the clamping component adopts a simple clamping claw 2-4, such as a pneumatic or electric clamping claw.

[0060] The first quantitative oiling module 3 and the second quantitative oiling module 6 are both used to oil the parts after the protective cover is installed. Figure 4 , both include an oil supply module 3-1, an oil nozzle 3-3 and a height adjustment component 3-2. The oil supply module 3-1 includes an oil hopper, a metering pump, etc. The height adjustment component 3-2 is used to adjust the height of the oil nozzle 3-3. When spraying oil, the rotation drive component drives the product to rotate, and the height adjustment component 3-2 adjusts the height of the oil nozzle 3-3 to achieve uniform and quantitative oil spraying.

[0061] Cage assembly module 4: used to install the cage onto the oiled parts, such as Figure 2 The cage assembly module 4 includes a second robotic arm assembly 4-1 and a cage material rack 4-2. The second robotic arm assembly 4-1 grabs the cage in the cage material rack 4-2 and installs it on the ball shaft.

[0062] The materials on the cage material rack 4-2 are manually placed. The carrier that holds the cage is a fixture shaped like the ball bearing, ensuring accurate positioning during assembly (i.e., the cage's balls are aligned with the ball bearing slots). The trolley is equipped with a visual inspection system. A robotic arm grabs the materials and places them before a camera for inspection. Defective cages are removed and qualified ones are assembled. After the cage is assembled, two proximity switches, one above and one below, verify that the cage is properly assembled. If not, the robotic arm reassembles it.

[0063] The automobile intermediate shaft assembly line also includes a detection component for detecting whether the parts are qualified. The detection components are respectively arranged before and after the second robotic arm component 4-1. Defective products are transferred through the second robotic arm component 4-1 and the transfer unloading module 9 respectively.

[0064] The detection components generally include: a laser displacement sensor for detecting the geometric dimensions of the product; an ultrasonic sensor for detecting internal defects of the product; other embodiments may also include a precision balance for weighing product quality and visual system detection.

[0065] The detection component can be set on the second robotic arm component 4-1 or can be set separately.

[0066] Circlip assembly module 5: Figure 5, used to install the circlip on the part: the circlip assembly module 5 includes a circlip feeding component 5-1, a positioning clamping component 5-5, a pushing component 5-4, a vacuum adsorption component 5-6, a compression spring component 5-7, a translation drive 5-2 and a lifting drive 5-3, the lifting drive 5-3 is connected to the translation drive 5-2, the translation drive 5-2 and the lifting drive 5-3 preferably use a cylinder, the vacuum adsorption component 5-6 and the compression spring component 5-7 are both connected to the lifting drive 5-3, the positioning clamping component 5-5 is provided with a positioning area 5-8 and an adsorption area 5-10 for receiving the material of the retaining spring feeding assembly 5-1, the pushing assembly 5-4 is used to push the retaining spring from the positioning area 5-8 to the adsorption area 5-10, the vacuum adsorption assembly 5-6 is used to adsorb the retaining spring and place it on the part, the compression spring assembly 5-7 presses the retaining spring down to the set position, and after the pressing is completed, the driving assembly is rotated to drive the ball shaft positioning tooling 12-2 to rotate at least one circle to ensure that the retaining spring completely enters the retaining spring groove of the ball shaft.

[0067] like Figure 6 The retaining spring feeding component 5-1 adopts a vibrating disk, and the flow channel of the vibrating disk is connected with the positioning area 5-8 of the positioning clamping component 5-5. The positioning clamping component 5-5 is a block structure, which has a channel for the retaining spring to pass through. The channel connects the positioning area 5-8 and the adsorption area 5-10. The positioning area 5-8 is a circular hole. The pushing component 5-4 is a cylinder, and the front end is connected to the pushing rod 5-9. The pushing rod 5-9 is sheet-shaped and is used to push the retaining spring from the positioning area 5-8 to the adsorption area 5-10. The vacuum adsorption component 5-6 is a vacuum suction pen. The compression spring component 5-7 is a tubular structure with a hole in the middle. The compression spring component 5-7 and the vacuum adsorption component 5-6 are both installed on the same lifting drive 5-3, which reduces the structural complexity and reduces the equipment cost.

[0068] The sleeve assembly module 7 includes a sleeve feeding device 7-1, which can be optionally a hoist, and also includes a mobile drive component 7-2 and a clamping claw component that are the same as those in the protective sleeve assembly module 2. The clamping claw component here can be provided with a rotatable clamping claw to facilitate horizontal grasping of the sleeve and then rotating the sleeve vertically for installation. It is also possible to directly use a vertical sleeve feeding without rotating the clamping claw.

[0069] Pressing module 8: used to press the sleeve and parts together, such as Figure 7 , including a horizontal driving cylinder 8-2, a vertical driving cylinder 8-1 and a pressing part 8-3, which are used to press the sleeve in.

[0070] Transfer unloading module 9: used for unloading and transferring parts on the ball shaft positioning tooling 12-2, including a third robotic arm assembly 9-1.

[0071] Cleaning module 10, such as Figure 8 The cleaning module 10 includes a cleaning brush lifting drive 10 - 1 and a cleaning brush 10 - 2 .

[0072] The testing module 11 includes an electronic universal testing machine 11 - 1 . The electronic universal testing machine 11 - 1 includes two chucks for clamping products, one of which is movable and both chucks are rotatable, so that comprehensive performance testing of the product can be performed.

[0073] During inspection, the visual grasping robot arm grabs the intermediate shaft assembly in the material tray to be inspected, and inserts one end into the spline tooling of the chuck of the microcomputer-controlled electronic universal testing machine. The chuck spline tooling at the other end automatically slides to the set position and is just inserted into the other spline hole of the intermediate shaft. Pins are inserted into the two holes. The microcomputer-controlled electronic universal testing machine simultaneously detects the push-pull sliding force, breaking torque, and axial breakout force of the sliding shaft and sliding tube shaft. The obtained data is uploaded to the computer, and a curve graph is automatically generated to determine whether the inspection results are qualified.

[0074] Step 4: If the test is qualified, the laser printer prints the assembly production batch number QR code, and the visual grasping robot arm picks up the qualified assembly according to the scanned batch number QR code and places it into the qualified product unloading rack.

[0075] Embodiment 1 of a method for assembling an automobile intermediate shaft assembly: Based on the above-mentioned automobile intermediate shaft assembly assembly line, the method comprises the following steps:

[0076] Ball shaft loading;

[0077] Protective cover assembly;

[0078] Quantitative oiling;

[0079] Cage assembly;

[0080] Product testing: if the product is qualified, it will enter the next process; if the product is unqualified, it will be unloaded to the unqualified product box by the second robotic arm assembly 4-1;

[0081] The retaining spring is assembled. The retaining spring feeding component 5-1 feeds the retaining spring to the positioning area 5-8. The pushing component 5-4 is used to push the retaining spring from the positioning area 5-8 to the adsorption area 5-10. The vacuum adsorption component 5-6 adsorbs the retaining spring. The translation drive 5-2 and the lifting drive 5-3 are used to activate the vacuum adsorption component 5-6 to place the retaining spring on the ball shaft 13. The lifting drive 5-3 drives the compression spring component 5-7 to press the retaining spring down to the set position. After the pressing is completed, the rotation drive component drives the ball shaft positioning tooling 12-2 to rotate at least one circle to ensure that the retaining spring is completely entered into the retaining spring groove of the ball shaft. Then the compression spring component 5-7 is separated from the ball shaft.

[0082] Quantitative oiling:

[0083] Casing assembly;

[0084] Casing pressing;

[0085] Product testing: if the product is qualified, the transfer unloading module 9 will transfer the product to the testing station, and the testing module 11 will perform product performance testing. If the product is unqualified, the transfer unloading module 9 will transfer the product to the unqualified product box;

[0086] Cleaning of the ball shaft positioning fixture 12-2: Use the cleaning brush lifting drive 10-1 to make the cleaning brush 10-2 contact the ball shaft positioning fixture 12-2, and rotate the drive assembly to drive the ball shaft positioning fixture 12-2 to rotate for cleaning.

[0087] Example 2 of an automobile intermediate shaft assembly assembly method:

[0088] The following steps are involved:

[0089] Step 1: Preparation, including initializing the settings of each workstation and placing qualified accessories and materials into the trays of each workstation;

[0090] Step 101: Check the operating status of each workstation and restore the position parameters of each workstation to the initial position;

[0091] Step 102: Perform a preliminary inspection on the appearance quality of various accessories through a visual inspection system and eliminate unqualified products;

[0092] Step 103: Place qualified accessories into corresponding material racks, and set the storage quantity and location information of the material racks.

[0093] Step 2: Start the switch of the conveying track 12-1, and the ball shaft loading module 1 transfers the ball shaft to the protective sleeve assembly module 2;

[0094] Step 201: Detect the arrival of the ball shaft through a photoelectric sensing device.

[0095] Step 3: The protective sleeve assembly module 2 assembles the protective sleeve and the ball shaft, and the assembled product is transferred to the first quantitative oiling module 3;

[0096] Step 301: transport the protective cover to the assembly position through the vibrating plate feeding system;

[0097] Step 302: Position the protective sleeve using the flow channel system;

[0098] Step 303: accurately positioning and installing the guard and the ball shaft by moving the driving assembly and the clamping jaw assembly;

[0099] Step 305: The protective sleeve is fastened and assembled by an electric torque converter.

[0100] Step 4: The first quantitative oiling module 3 applies quantitative oil to the product and transfers the oiled product to the cage assembly module 4;

[0101] Step 401: providing a fixed amount of lubricating oil through an oil pump system;

[0102] Step 402: Detect the amount of oil applied by a flow sensor.

[0103] Step 5: The cage assembly module 4 installs the cage on the product and transfers the assembled product to the circlip assembly mechanism;

[0104] Step 6: The circlip assembly module 5 assembles the circlip with the product and transfers the assembled product to the quantitative oiling device;

[0105] Step 7: The second quantitative oiling module 6 applies quantitative oil to the product and transmits the oiled product to the sleeve assembly module 7;

[0106] Step 8: The sleeve assembly module 7 assembles the sleeve and the product, and transfers the assembled product to the pressing module 8;

[0107] Step 9: The pressing module 8 presses the product and transfers the pressed product to the transfer unloading module 9;

[0108] Step 901: monitor the pressing force in real time through the pressure sensor provided in the pressing module 8;

[0109] Step 902: monitor the press-fitting displacement in real time through the displacement sensor provided in the press-fitting module 8;

[0110] Step 903: Detect whether the press-fitting is completed by using the proximity switch provided in the press-fitting module 8;

[0111] Step 904: inspect the press-fitting quality through a visual system.

[0112] Step 10: The transfer unloading module 9 transfers the product to the testing module 11 for testing.

[0113] Step 1001: Detect the arrival of a product through a photoelectric sensing device;

[0114] Step 1002: clamp and position the product using a robot;

[0115] Step 1004: Perform comprehensive performance testing using a microcomputer-controlled electronic universal testing machine;

[0116] Step 1005: Print the product QR code using a laser coder;

[0117] Step 1006: Use the visual grasping robot arm to transport the product to the corresponding unloading rack.

[0118] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand and implement the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. An automobile intermediate shaft assembly line, characterized by: include: A ball shaft conveying module (12): comprising a conveying track (12-1), a plurality of ball shaft positioning fixtures (12-2), and a rotation drive assembly for driving the ball shaft positioning fixtures (12-2) to rotate, wherein the ball shaft positioning fixtures (12-2) are capable of moving on the conveying track (12-1); Set in sequence: Ball shaft loading module (1): used to load parts onto the ball shaft positioning fixture (12-2); Protective cover assembly module (2): used to install the protective cover on the part; A first quantitative oiling module (3): used for oiling the parts after the protective cover is installed; Cage assembly module (4): used to install the cage onto the oiled parts; Circlip assembly module (5): used to install the circlip onto the part: Second quantitative oiling module (6): used for oiling parts; Sleeve assembly module (7): used to install the sleeve on the part; Pressing module (8): used to press the sleeve and the parts together: Transfer unloading module (9): used for unloading and transferring parts on the ball shaft positioning fixture (12-2).

2. The automobile intermediate shaft assembly line according to claim 1, characterized in that: The ball shaft loading module (1) comprises a first robotic arm assembly (1-2) and a ball shaft material rack (1-1), wherein the ball shaft material rack (1-1) is used for placing parts, and the first robotic arm assembly (1-2) is used for transferring the parts in the material rack (1-1) to the ball shaft positioning tool (12-2).

3. The automobile intermediate shaft assembly line according to claim 1, characterized in that: The protective sleeve assembly module (2) and the sleeve assembly module (7) both comprise a feeding assembly, a moving drive assembly, and a clamping claw assembly.

4. The automobile intermediate shaft assembly line according to claim 1, characterized in that: The first quantitative oiling module (3) and the second quantitative oiling module (6) both comprise an oil spray nozzle (3-3) and a height adjustment component (3-2); the height adjustment component (3-2) is used to adjust the height of the oil spray nozzle (3-3).

5. The automobile intermediate shaft assembly line according to claim 1, characterized in that: The retainer assembly module (4) comprises a second mechanical arm assembly (4-1) and a retainer material rack (4-2), wherein the second mechanical arm assembly (4-1) is used for installing the retainer.

6. The automobile intermediate shaft assembly line according to claim 5, characterized in that: The automobile intermediate shaft assembly line further comprises a detection component for detecting whether parts are qualified. The detection components are respectively arranged before and after the second mechanical arm component (4-1). Defective products are transferred through the second mechanical arm component (4-1) and the transfer unloading module (9).

7. The automobile intermediate shaft assembly line according to any one of claims 1 to 6, characterized in that: The clamping spring assembly module (5) includes a clamping spring feeding component (5-1), a positioning clamping component (5-5), a pushing component (5-4), a vacuum adsorption component (5-6), a compression spring component (5-7), a translation drive (5-2) and a lifting drive (5-3), wherein the lifting drive (5-3) is connected to the translation drive (5-2), the vacuum adsorption component (5-6) and the compression spring component (5-7) are both connected to the lifting drive (5-3), and the positioning clamping component (5-5) A positioning area (5-8) and an adsorption area (5-10) for receiving materials from a retaining spring feeding assembly (5-1) are provided on the retaining spring. The pushing assembly (5-4) is used to push the retaining spring from the positioning area (5-8) to the adsorption area (5-10). The vacuum adsorption assembly (5-6) is used to adsorb the retaining spring and place it on the part. The compression spring assembly (5-7) presses the retaining spring down to a set position. After the pressing is completed, the rotation drive assembly drives the ball shaft positioning tooling (12-2) to rotate at least one circle.

8. The automobile intermediate shaft assembly line according to claim 7, characterized in that: The automobile intermediate shaft assembly line further comprises a cleaning module (10), wherein the cleaning module (10) comprises a cleaning brush lifting drive (10-1) and a cleaning brush (10-2).

9. The automobile intermediate shaft assembly line according to claim 8, characterized in that: The automobile intermediate shaft assembly line further comprises a testing module (11), wherein the testing module (11) comprises an electronic universal testing machine (11-1).

10. An automobile intermediate shaft assembly assembly method, based on the automobile intermediate shaft assembly assembly line according to any one of claims 1 to 9, characterized in that: The following steps are involved: Ball shaft loading; Protective cover assembly; Quantitative oiling; Cage assembly; Product inspection: if the product is qualified, it will enter the next process; if the product is unqualified, it will be unloaded into the unqualified product box by the second robotic arm assembly (4-1); The circlip is assembled, the circlip feeding component (5-1) feeds the circlip to the positioning area (5-8), the pushing component (5-4) is used to push the circlip from the positioning area (5-8) to the adsorption area (5-10), the vacuum adsorption component (5-6) adsorbs the circlip, and the translation drive (5-2) and the lifting drive (5-3) are used to make the vacuum adsorption component (5-6) move to place the circlip on the ball shaft (13), the lifting drive (5-3) drives the compression spring component (5-7) to press the circlip down to the set position, and after the pressing is completed, the rotation drive component drives the ball shaft positioning tool (12-2) to rotate at least one circle to ensure that the circlip is completely inserted into the circlip groove of the ball shaft, and then the compression spring component (5-7) is separated from the ball shaft; Quantitative oiling: Casing assembly; Casing pressing; Product testing: if the product is qualified, the transfer unloading module (9) transfers the product to the testing station, and the testing module (11) performs product performance testing; if the product is unqualified, the transfer unloading module (9) transfers the product to the unqualified product box; Cleaning of the ball shaft positioning tool (12-2): Utilize the cleaning brush lifting drive (10-1) to bring the cleaning brush (10-2) into contact with the ball shaft positioning tool (12-2), and rotate the drive assembly to drive the ball shaft positioning tool (12-2) to rotate for cleaning.

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