A method and system for binding tightening data on a commercial vehicle production line

Abstract

This application discloses a method and system for binding tightening data on a commercial vehicle production line, relating to the field of commercial vehicle manufacturing technology. It is applied in an environment including a vehicle identification device, tightening tools, a manual reporting button, a data binding system, a quality control system, and an AGV control system. The method includes: acquiring vehicle information upon entry; the system retrieving a matching tightening program and switching to the tool accordingly; personnel tightening according to the program, with the tool system simultaneously collecting and generating vehicle tightening data; personnel reporting the work after data completion; and the quality control system automatically verifying the tightening results based on the reporting signal, determining the number of qualified points, and outputting the results. If qualified, the system binds and stores the data in the database, and controls the AGV to move forward upon success; if unqualified, an alarm is triggered and the AGV is stopped. This method solves the problem of misbinding data across workstations, ensuring binding accuracy and quality controllability.

Description

Technical Field

[0001] This application relates to the field of commercial vehicle manufacturing technology, and in particular to a method and system for binding tightening data on a commercial vehicle production line. Background Technology

[0002] In the accompanying production line of a commercial vehicle final assembly workshop, the traditional method of binding tightening data is to bind the tightening data of the tightening station to the vehicle at that station once the accompanying vehicle arrives at the tightening station. However, this method has a significant drawback: because the distance between two tightening stations is too short, during the vehicle's movement, bolts often arrive at the next station before they are fully tightened, resulting in cross-station tightening. In this case, the bolt tightening data of the current station will be incorrectly bound to the next vehicle.

[0003] Existing methods that limit bolt count also have problems: when bolts are tightened repeatedly, the bolt tightening data of the current vehicle is linked to that of subsequent vehicles, leading to data binding confusion. These issues seriously affect the accuracy of tightening data binding, making subsequent quality traceability difficult and posing safety hazards and quality risks. Summary of the Invention

[0004] The purpose of this invention is to provide a method and system for binding tightening data on a commercial vehicle assembly line, which at least solves the problem in the prior art where tightening data is incorrectly bound to the vehicle due to the tight spacing between tightening stations or repeated tightening in the commercial vehicle final assembly line, thus causing difficulties in quality traceability and safety risks.

[0005] This invention provides the following solution:

[0006] According to one aspect of the present invention, a method for data binding of tightening on a commercial vehicle production line is provided. The method is applied in a production environment including a vehicle identification device, tightening tools, a manual reporting button, a data binding system, a quality control system, and an AGV control system, and includes the following steps:

[0007] When the AGV carrying the vehicle enters the tightening station, the vehicle identification device obtains the current vehicle's entry information.

[0008] The data binding system retrieves the tightening program corresponding to the current vehicle based on the station entry information and switches the tightening program to the tightening tool.

[0009] The operator uses the tightening tool to tighten the bolts of the current vehicle according to the tightening procedure. During this process, the tightening tool system associated with the tightening tool collects and generates the tightening data of the current vehicle.

[0010] After the tightening tool system generates complete tightening data for the current vehicle, the operator triggers the manual reporting button to generate a reporting signal;

[0011] The quality control system receives the work report signal and automatically verifies the tightening task execution result of the current vehicle based on the signal, determines whether the number of qualified points meets the requirements, and outputs the verification result.

[0012] If the verification result indicates that the number of qualified points meets the requirements, the data binding system binds the tightening data with the current vehicle and stores the bound tightening data in the system database. After the tightening data is successfully stored, the AGV control system controls the AGV to move forward.

[0013] If the verification result indicates that the number of qualified points does not meet the requirements, the quality control system will trigger an alarm and control the AGV to stop moving forward through the AGV control system.

[0014] Furthermore, the process of obtaining the current vehicle's entry information through the vehicle identification device includes:

[0015] When the AGV carrying the vehicle enters the identification area of ​​the tightening station, the vehicle identification device detects the vehicle entering the station event;

[0016] The vehicle identification device reads the current vehicle's identity information to obtain the station entry information.

[0017] Furthermore, the process of switching the tightening procedure to the tightening tool includes:

[0018] The data binding system receives the entry information from the vehicle identification device and parses the current vehicle's identity identifier from the entry information;

[0019] The data binding system matches the tightening program corresponding to the current vehicle model from the pre-stored program library based on the identity identifier;

[0020] The data binding system sends the matched tightening program to the tightening tool to complete the program switching.

[0021] Furthermore, the process for generating the tightening data includes:

[0022] The operator uses the tightening tool to tighten each target bolt of the current vehicle in sequence according to the parameters set in the tightening program;

[0023] During each tightening operation, the tightening tool system monitors and collects the tightening process parameters in real time to form a single tightening record.

[0024] Once all target bolts on the current vehicle have been tightened, the tightening tool system integrates all single tightening records to generate complete tightening data corresponding to the current vehicle.

[0025] Furthermore, the process for obtaining the single tightening record includes:

[0026] During a single tightening operation, the tightening tool system collects tightening process parameters in real time, including at least torque and angle values.

[0027] The tightening tool system associates the tightening process parameters collected in this operation with the bolt position identifier corresponding to this operation to generate a single tightening record containing the bolt position identifier, torque value, and angle value.

[0028] Furthermore, the process for generating the work signal includes:

[0029] Once the tightening tool system associated with the tightening tool generates complete tightening data for the current vehicle, the tightening tool system or the data binding system sends a ready-to-work prompt to the corresponding workstation.

[0030] Upon receiving the readiness notification, the operator triggers the manual reporting button configured at their workstation;

[0031] When the manual reporting button is triggered, a reporting signal containing the workstation identifier is generated and uploaded to the quality and safety system.

[0032] Furthermore, the output process of the verification result includes:

[0033] After receiving the work report signal, the quality Andon system requests and obtains the complete tightening data corresponding to the current vehicle from the data binding system or the tightening tool system based on the work station identifier in the work report signal.

[0034] The quality Andon system will compare each single tightening record in the tightening data it acquires with the pre-stored process standards for the current vehicle model to determine whether it is a qualified point.

[0035] The quality control system counts the number of all points that are judged as qualified, determines whether the number reaches the total number of qualified points required for the current vehicle model, and outputs the verification result indicating whether it passes or fails.

[0036] Furthermore, if the verification result indicates that the number of qualified points meets the requirements, specifically including:

[0037] After outputting the verification result indicating that the test has passed, the quality Anton system sends a data binding instruction to the data binding system; the data binding system responds to the data binding instruction and associates the complete tightening data of the current vehicle with the vehicle identification of the current vehicle.

[0038] The data binding system will complete the binding of the tightening data and store it in the system database;

[0039] After confirming that the tightening data has been successfully stored, the data binding system or the quality control system sends a vehicle release command to the AGV control system.

[0040] The AGV control system responds to the vehicle release command and controls the AGV trolley carrying the current vehicle to leave the current tightening station and continue moving forward.

[0041] Furthermore, if the verification result indicates that the number of qualified points does not meet the requirements, specifically including:

[0042] After outputting the verification result indicating failure, the quality Anton system enters an exception handling state.

[0043] In the abnormal handling state, the quality Andon system performs an alarm operation, which includes generating and sending an alarm message containing the current vehicle identifier, non-conforming point information, and workstation identifier;

[0044] The quality control system sends a stop control command to the AGV control system.

[0045] The AGV control system responds to the stop control command and controls the AGV trolley carrying the current vehicle to stop at the current workstation.

[0046] According to a second aspect of the present invention, a tightening data binding system for a commercial vehicle accompanying production line is provided, which is applied in a production environment including a vehicle identification device, a tightening tool, a manual reporting button, a data binding system, a quality control system, and an AGV control system, wherein the system is configured to perform the steps of the tightening data binding method for the commercial vehicle accompanying production line.

[0047] The above solution achieves the following beneficial technical effects:

[0048] This application introduces a core mechanism that triggers system verification through manual reporting, and sets a prerequisite that vehicles can only be released after data is successfully stored. This ensures that vehicles cannot leave their current workstations before the tightening data is bound and securely stored, preventing cross-workstation data misbinding caused by vehicle movement. This ensures that each tightening data is strictly associated with a unique and correct vehicle identity, providing a 100% accurate data traceability foundation for product quality.

[0049] This application constructs a multi-verification system that integrates data collection from the tool system to manual confirmation of work reports and comparison of process standards with the Andon system. In particular, by automatically comparing the torque and angle data of each tightening point with the pre-stored process standards, it can determine the qualification of the operation in real time and objectively, effectively preventing operational defects such as missed tightening, mis-tightening, and unqualified parameters from flowing into the next process, and greatly improving the consistency and reliability of the assembly process.

[0050] This application utilizes vehicle entry information to automatically retrieve and switch tightening programs, avoiding delays and errors caused by manual searching and inputting programs. It adapts to the flexible needs of mixed production lines for multiple vehicle models. At the same time, through systematic readiness prompts and work reporting collaboration, the work rhythm of multiple tools and personnel within the workstation is standardized and synchronized, optimizing the workstation operation cycle and improving overall production efficiency. Attached Figure Description

[0051] Figure 1 This is a schematic diagram illustrating the implementation logic of a data binding method for tightening on a commercial vehicle production line, provided by one or more embodiments of the present invention. Detailed Implementation

[0052] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Figure 1 This is a schematic diagram illustrating the implementation logic of a data binding method for tightening on a commercial vehicle production line, provided by one or more embodiments of the present invention.

[0054] like Figure 1 The method shown is a tightening data binding method for a commercial vehicle accompanying production line. The method is applied in a production environment including a vehicle identification device, tightening tools, a manual reporting button, a data binding system, a quality assurance system, and an AGV control system. The method includes the following steps:

[0055] When the AGV carrying the vehicle enters the tightening station, the vehicle identification device obtains the vehicle's entry information.

[0056] Furthermore, the process of obtaining the current vehicle's entry information through the vehicle identification device includes:

[0057] When the AGV carrying the vehicle enters the identification area of ​​the tightening station, the vehicle identification device detects the vehicle entering the station event.

[0058] The vehicle identification device reads the current vehicle's identity information to obtain the station entry information.

[0059] Specifically, at the entrance of the tightening station, a position detection sensor is installed on the ground or side along the AGV's travel path. This position detection sensor is one of photoelectric sensors, proximity switches, or inductive loops. When the wheels or body of the AGV carrying the vehicle block the light beam, enter the electromagnetic field, or pass over the coil, the position detection sensor is triggered, generating a physical vehicle arrival signal. This signal indicates that the vehicle has entered the area where identification can be performed. Subsequently, the vehicle identification device, which is logically linked to the position detection sensor, is activated. The vehicle identification device is one of radio frequency identification readers, industrial barcode readers, or visual recognition cameras, and its specific type depends on the form of the identification tag carried by the vehicle.

[0060] An identification tag is an electronic tag, QR code nameplate, or barcode label affixed to a designated location on the vehicle frame or in the driver's cab. When the identification tag is a radio frequency identification (RFID) tag, the vehicle identification device is an RFID reader / writer. The reader / writer emits a radio frequency signal to activate the tag, and the tag transmits its internally stored unique vehicle identification code back to the reader / writer via radio frequency signal. The reader / writer decodes the code to obtain the vehicle identification information. When the identification tag is a QR code or barcode, the vehicle identification device is an industrial barcode reader or a visual recognition camera. The reader / camera captures an image of the tag and decodes it using a built-in decoding algorithm. The code in the image is parsed to extract the vehicle identity information encoded within it. After successfully reading the vehicle identity information, the vehicle identification device logically binds this information with the vehicle arrival signal to form a complete "vehicle entry information". This information includes at least the following data fields: vehicle unique identification code, entry timestamp, and trigger station number. Finally, the vehicle identification device sends the above structured vehicle entry information to the central data processing unit, i.e., the data binding system, in real time through its communication interface via the industrial field network to initiate the subsequent tightening procedure retrieval process.

[0061] Through the above steps, the vehicle identification device can automatically and accurately capture vehicle entry events and read their unique identification, providing an accurate and reliable vehicle identification data source. This avoids vehicle identification confusion caused by manual identification or information transmission errors, ensuring that the operation object is always a unique and definite current vehicle throughout the entire process from tightening program matching and data collection to final binding. This provides a foundation for the accuracy of the entire data binding method. At the same time, the automatic identification process responds quickly without human intervention delay, ensuring the continuity of production efficiency.

[0062] In this embodiment, the data binding system retrieves the tightening program corresponding to the current vehicle based on the station entry information and switches the tightening program to the tightening tool.

[0063] Furthermore, the process of switching the tightening procedure to a tightening tool includes:

[0064] The data binding system receives entry information from the vehicle identification device and parses the current vehicle's identity identifier from the entry information;

[0065] The data binding system matches the tightening program corresponding to the current vehicle model from the pre-stored program library based on the identity identifier;

[0066] The data binding system sends the matched tightening program to the tightening tool to complete the program switching.

[0067] Specifically, the data binding system continuously monitors and receives vehicle entry information from vehicle identification devices at each tightening station via its network communication interface. Upon receiving an entry message, the binding control software immediately parses it. The parsing process extracts the core vehicle identification identifier from the data fields of the message. This identifier is the vehicle's unique identification code. Subsequently, the data binding system accesses its internal or connected external database. This database contains a tightening program library, which is a data table. Each record in the tightening program library stores at least three key fields: vehicle model code, the tightening program file corresponding to the vehicle model, and the tightening tool number or station number applicable to the program. The data binding system uses the parsed vehicle identification identifier as a query condition. First, it queries the vehicle master data table to determine the specific vehicle model. Then, using the vehicle model code as an index, it performs a matching query in the tightening program library to retrieve all tightening program files pre-configured for that vehicle model.

[0068] After successful matching, the data binding system determines the tightening tool that needs to receive the program based on the associations recorded in the program library. The data binding system establishes a communication connection with the control unit of the target tightening tool through the workshop industrial wireless network or fieldbus. The data binding system encapsulates the retrieved tightening program file and the necessary parameters related to the execution of the program, such as the target torque value, angle range, and tightening strategy sequence, into a standard program download instruction and sends it to the tightening tool. The control unit of the target tightening tool receives and parses the instruction, loads the new tightening program into its memory, and overwrites or replaces the original standby program. After loading is complete, the control unit of the tightening tool sends a "program switching successful" confirmation signal to the data binding system. At this time, the tightening tool is ready and can perform precise tightening operations on the currently arriving vehicle according to the newly issued program.

[0069] Through the above steps, the vehicle identification can be automatically associated and matched with the pre-stored program library, preventing selection errors and operation delays that may be caused by manual searching and manual input of programs. This ensures that every vehicle entering the workstation can immediately obtain tightening process parameters tailored to its model, ensuring the standardization and process compliance of tightening operations, and significantly improving the response speed and flexible production capacity of the production line.

[0070] In this embodiment, the operator uses a tightening tool to tighten the bolts of the current vehicle according to the tightening procedure. During this process, the tightening tool system associated with the tightening tool collects and generates the tightening data of the current vehicle.

[0071] Furthermore, the data generation process includes:

[0072] The operator uses tightening tools to tighten each target bolt of the current vehicle in sequence according to the parameters set in the tightening program;

[0073] During each tightening operation, the tightening tool system monitors and collects the tightening process parameters in real time, forming a single tightening record.

[0074] Once all target bolts on the current vehicle have been tightened, the tightening tool system integrates all single tightening records to generate complete tightening data corresponding to the current vehicle.

[0075] Furthermore, the process for obtaining a single tightening record includes:

[0076] During a single tightening operation, the tightening tool system collects tightening process parameters in real time, including at least torque and angle values.

[0077] The tightening tool system associates the tightening process parameters collected during this operation with the bolt position identifier corresponding to this operation, and generates a single tightening record that includes the bolt position identifier, torque value, and angle value.

[0078] Specifically, in practice, this step is completed collaboratively by the operator, the intelligent tightening tool, and the tightening tool system in the background. The tightening tool is a servo electric tightening shaft or pulse tightening gun, which integrates a high-precision torque sensor and angle encoder. The tool is connected to a local tightening controller via a data cable. The controller is connected to the workshop network, together forming the tightening tool system. The operator holds or operates the tightening tool, aligns it with the target bolt on the current vehicle that needs to be tightened, and the tool automatically performs the tightening operation according to the loaded tightening program. The tightening program is preset with specific tightening strategies and parameters for each bolt position, such as the two-step tightening method, whose parameters include the first target torque, the first target angle, the second target torque, and the second target angle.

[0079] During the tightening of a single bolt, the torque sensor built into the tightening tool measures and outputs the current torque value in real time, and the angle encoder measures and outputs the current rotation angle value in real time. The tightening controller synchronously collects the real-time data streams of these two physical quantities at a millisecond frequency and records the tightening start time and end time. When the tightening operation reaches the termination condition set by the program, the single operation ends. Subsequently, the tightening controller processes the complete data stream collected in this operation. It extracts the key final torque value, final angle value, and the judgment result of whether the tightening process is qualified. At the same time, the operator can input or confirm the current bolt position identifier by pressing the button on the tool or selecting on the controller touch screen. This identifier follows the unified numbering rules on the process drawing.

[0080] The tightening controller encapsulates the bolt position identifier, final torque value, final angle value, pass / fail judgment result, operation timestamp, tool number, and operator number into a structured data packet, forming a single tightening record. This record is temporarily stored in the tightening controller's local memory. The operator repeats the above operation for all predefined target bolts of the current vehicle according to the process sequence. Each time a bolt is completed, a corresponding single tightening record is generated and temporarily stored. When the operator completes the operation on the last target bolt, the tightening controller detects that the preset work task list for the current vehicle has been completed. At this time, the tightening controller automatically summarizes and sorts all the temporarily stored single tightening records belonging to the same vehicle according to the bolt position order, and adds a file header containing the current vehicle's identity identifier and workstation information to generate a complete tightening data file corresponding to the current vehicle. This file contains the full process and result data of all tightening points of the vehicle at this workstation. Finally, the tightening controller sends the complete tightening data file to the data binding system for temporary storage through the workshop network, awaiting subsequent work reporting and verification processes.

[0081] Through the above steps, the torque and angle values ​​of each bolt tightening can be collected in real time and accurately associated with the specific bolt position, generating a highly granular and structured single tightening record. Finally, the integrated vehicle tightening data package records the operation process and quality results of all key fastening points of the vehicle at this workstation in a complete and objective manner, providing a reliable data foundation for subsequent quality verification and traceability.

[0082] In this embodiment, after the tightening tool system generates complete tightening data for the current vehicle, the operator triggers the manual reporting button to generate a reporting signal.

[0083] Furthermore, the process for generating work signals includes:

[0084] Once the tightening tool system associated with the tightening tool generates complete tightening data for the current vehicle, the tightening tool system or data binding system sends a ready-to-work prompt to the corresponding workstation.

[0085] Once the operator receives the readiness notification, they trigger the manual reporting button configured at their workstation.

[0086] When the manual reporting button is triggered, a reporting signal containing the workstation identifier is generated and uploaded to the Quality Andon system.

[0087] Specifically, once the tightening tool system has completed the tightening of all target bolts on the current vehicle and successfully generated a complete vehicle tightening data file, the controller of the tightening tool system will generate an internal status flag indicating "data ready". This status flag is sent to the data binding system via the workshop network. After receiving this status flag and confirming that the tightening data file of the vehicle has been successfully received, the data binding system determines that the tightening data acquisition task at this workstation is ready. At this time, the controller of the data binding system or the tightening tool system will issue a prompt indicating that the work is ready through the field indicator device at the workstation. This field indicator device is one of the following: a signal light pole, a touch screen, or an audible and visual alarm installed in a prominent position at the workstation. For example, the green indicator light on the signal light pole will be constantly lit, or a prompt box will pop up on the touch screen saying "data ready, please confirm the work" accompanied by a short prompt sound.

[0088] Upon seeing or hearing the readiness prompt, the operator understands that the tightening data for the current vehicle has been prepared. The operator then presses the manual reporting button specially configured on their workstation's control panel. This button is a physical, self-resetting, illuminated button, usually green, which integrates a microswitch and indicator light circuit. It is connected to the workstation's input / output module via a cable. When the operator presses the button, the microswitch closes, generating a level transition signal. After detecting this signal change, the workstation's input / output module immediately generates a digital message, which is the reporting signal. Its data structure contains the following key information: signal type code, the unique number of the workstation that issued the signal, the trigger timestamp, and the operator's employee number. After generating the reporting signal, the workstation's input / output module sends the digital message directly to the signal receiving interface of the quality control system via the workshop's industrial Ethernet or fieldbus network. At this point, a reporting signal indicating "the tightening operation and data preparation for the current vehicle at this workstation have been confirmed as complete, requesting quality verification" is transformed from a physical operation into a standard instruction that can be processed by the subsequent system.

[0089] Through the above steps, it is ensured that the system will only allow and prompt the operator to initiate a quality verification request after all tightening data has been fully collected and is ready. This avoids invalid verification due to incomplete or missing data, ensuring the data foundation of the verification process. On the other hand, by having personnel actively confirm the final work status, a reliable layer of human supervision and final responsibility confirmation is added to the entire automated binding process, effectively improving the reliability and fault tolerance of the entire system.

[0090] In this embodiment, the quality and efficiency system receives the work report signal and automatically verifies the tightening task execution result of the current vehicle based on the signal, determines whether the number of qualified points meets the requirements, and outputs the verification result.

[0091] Furthermore, the output process for the verification results includes:

[0092] After receiving the work report signal, the quality Andon system requests and obtains complete tightening data corresponding to the current vehicle from the data binding system or tightening tool system based on the work station identifier in the work report signal;

[0093] The quality Anton system will compare each single tightening record in the tightening data it acquires with the pre-stored process standards for the current vehicle model to determine whether it is a qualified point.

[0094] The quality control system counts the number of all points that are judged as qualified, determines whether the number reaches the total number of qualified points required for the current vehicle model, and outputs the verification result indicating whether it passes or fails.

[0095] Specifically, when the network communication service module of the Quality Andon system receives a work report signal uploaded from a manual work report button at a certain workstation, the Andon control software is immediately triggered. The software first parses the work report signal, extracts the workstation identifier and trigger timestamp from it, and then the Quality Andon system sends a data request instruction to the data binding system through the workshop data network based on the workstation identifier. This instruction contains the vehicle identification of the current vehicle and the data request type. After receiving the instruction, the data binding system retrieves the complete tightening data file generated by the workstation corresponding to the specified vehicle identification from its cache or database and sends it back to the Quality Andon system.

[0096] The Quality Andon system receives and opens the tightening data file, which contains multiple single tightening records. The Andon control software reads these records one by one. For each single tightening record, the software extracts key fields, namely bolt position identifier, the recorded final torque value, and the recorded final angle value. Then, the Quality Andon system accesses the central process database connected to it. This database stores tightening process standard tables for various vehicle models. The Andon control software first queries the specific model of the current vehicle based on the vehicle identification, and then retrieves the corresponding standard data from the process standard table based on the model. For each bolt position identifier, the process standard table pre-stores the standard torque range, standard angle range, and whether the point is a required point.

[0097] For each single tightening record, the Anton control software executes the following comparison and judgment logic: First, based on the bolt position identification in the record, it searches for the corresponding standard data in the process standard table. Then, it judges whether the recorded torque value falls within the standard torque range and whether the recorded angle value falls within the standard angle range. Only when both the torque and angle indicators fall within their respective standard ranges, and the point is marked as a required point in the process standard, is the point corresponding to the record judged as a qualified point. If either of these conditions is not met, it is judged as an unqualified point.

[0098] After iterating through and completing the judgment of all single tightening records, the Anton control software performs statistics. It counts the number of all points judged as qualified. At the same time, the software reads the total number of required qualified points for the current vehicle model from the process standard table. Finally, the Anton control software performs the final judgment. If the number of qualified points obtained is greater than or equal to the total number of required qualified points required by the process standard, the overall verification is judged as passed. At this time, the software generates a verification result signal with the content "passed". If the number of qualified points obtained is less than the total number of required qualified points, the overall verification is judged as failed. At this time, the software generates a verification result signal with the content "failed". This verification result signal is also a structured data message, which includes vehicle identification, workstation identification, verification time, number of qualified points, total number of required points, and the final "pass / fail" status code. After generating the verification result, the Anton quality system stores the result message in its log database and outputs it at the same time as the decision basis for triggering subsequent binding or alarm processes.

[0099] Through the above steps, the tightening data can be automatically, objectively, and comprehensively verified for compliance. This transforms the traditional quality control method, which relies on manual sampling or post-audit, into real-time, online, and full-process quality interception. The system accurately compares and judges each tightening point based on pre-stored process standards, and makes an overall compliance judgment based on the statistical number of qualified points. This allows for the accurate identification of various quality defects, including missed tightening and parameter non-compliance, achieving standardization and de-humanization of quality judgment and ensuring the objectivity and consistency of quality conclusions.

[0100] In this embodiment, if the verification result indicates that the number of qualified points meets the requirements, the data binding system will bind the tightening data with the current vehicle and store the bound tightening data in the system database. After the tightening data is successfully stored, the AGV control system will control the AGV to move forward.

[0101] Furthermore, if the verification results indicate that the number of qualified points meets the requirements, specifically including:

[0102] After outputting a verification result indicating that the test has passed, the quality Anton system sends a data binding command to the data binding system; the data binding system responds to the data binding command and associates the complete tightening data of the current vehicle with the vehicle identification number of the current vehicle.

[0103] The data binding system will complete the binding and store the data in the system database;

[0104] After confirming that the tightening data has been successfully stored, the data binding system or the quality control system sends a vehicle release command to the AGV control system.

[0105] The AGV control system responds to the vehicle release command and controls the AGV trolley carrying the current vehicle to leave the current tightening station and continue moving forward.

[0106] Specifically, after the quality Andon system completes the verification and outputs a "pass" result, its Andon control software immediately generates a data binding instruction. This instruction is a structured control message that contains at least the following information: instruction type code, target vehicle identification, workstation identification that issued the verification result, and timestamp of the binding trigger. The quality Andon system sends this data binding instruction to the data binding system through the workshop control network. Upon receiving the instruction, the data binding system's binding control software responds immediately. The software first retrieves the complete tightening data file corresponding to the vehicle uploaded by the corresponding workstation from its cache based on the vehicle identification in the instruction. Simultaneously, the data binding system accesses the vehicle information master data to obtain the complete vehicle file information corresponding to the vehicle identification, such as the vehicle VIN code, model, and production batch number.

[0107] Subsequently, the data binding system performs a data association binding operation. It treats the retrieved vehicle tightening data file as a binary data block and establishes an irreversible association with the vehicle's VIN code. Specifically, the binding operation involves writing the vehicle's VIN code as its unique identifier into the file header information of the tightening data file, and generating a globally unique binding transaction number and timestamp. After this operation, the tightening data file is permanently associated with a specific vehicle. After the binding operation is completed, the data binding system initiates a data storage process. Through a database connection, it writes the tightening data file that has completed the association binding as a whole record into a designated data table in the system database. After completing the physical write operation of this record, the system database returns a successful write confirmation response containing the unique primary key of the record to the data binding system.

[0108] After receiving a successful write confirmation response from the database, the data binding system confirms that the tightening data has been successfully stored. At this point, the data binding system, or the quality control system according to preset rules, generates a vehicle release instruction. This instruction is also a structured message, containing the release instruction type, the target AGV's device number, the target workstation number, and the allowed release time. This vehicle release instruction is sent to the AGV control system's scheduling server via the workshop control network. Upon receiving the instruction, the AGV control system's scheduling software immediately parses the instruction content and updates the corresponding AGV's task queue accordingly. The scheduling software sends a wireless control instruction to the AGV with the specified number, instructing it to release its locked state at the tightening workstation and move along a preset path to the next predetermined workstation. After receiving the departure instruction from its controller, the AGV's drive unit starts, and the AGV smoothly drives away from the tightening workstation, restoring the production line to normal operation.

[0109] Through the above steps, successful data storage can be used as a mandatory technical prerequisite for the physical release of vehicles. This process prevents the risk of "data not being saved and the vehicle leaving the station" caused by network latency or system failure. It ensures that every qualified tightening data can be reliably persisted and bound to the correct vehicle, thereby realizing the integrity and unbreakability of the product quality traceability chain, while maintaining the flow of the production line under controlled conditions.

[0110] In this embodiment, if the verification result indicates that the number of qualified points does not meet the requirements, the quality control system will trigger an alarm and control the AGV to stop moving forward through the AGV control system.

[0111] Furthermore, if the verification results indicate that the number of qualified points does not meet the requirements, specifically including:

[0112] After outputting a verification result indicating failure, the quality control system enters an exception handling state.

[0113] In abnormal handling status, the Quality Andon system performs an alarm operation, which includes generating and sending an alarm message containing the current vehicle identifier, non-conforming point information, and workstation identifier;

[0114] The quality control system sends a stop control command to the AGV control system;

[0115] The AGV control system responds to the stop control command and stops the AGV trolley carrying the current vehicle at the current workstation.

[0116] Specifically, after the quality Anton system completes the verification and outputs a verification result indicating "failure", its Anton control software immediately switches to a predefined abnormal handling state. In this state, the software will execute a series of preset abnormal response actions. First, the Anton control software performs an alarm operation. Based on the "failure" verification result, the software generates a detailed alarm message. This message is a structured data message, and its content includes at least the alarm event code, the complete identity of the current vehicle, the workstation identity that issued the alarm, the timestamp that triggered the alarm, a detailed list of non-conforming points, and the specific reasons for non-conforming at each non-conforming point. Among them, the list of non-conforming points includes the position identifiers of all bolts that are judged to be non-conforming and their corresponding measured torque and angle values.

[0117] After generating an alarm message, the Quality Andon system simultaneously sends the message to multiple target terminals via the workshop network. First, it sends it to the on-site alarm device at the tightening station where the quality problem occurred. This device is a three-color light pole or a high-volume buzzer, which will illuminate a red light and emit a continuous alarm sound. Second, it sends it to the main control screen of the workshop production monitoring center, where the alarm message is displayed in a prominent pop-up window. Third, it sends it to the mobile terminals or workstation computers of relevant quality engineers and production foremen. Simultaneously, the Quality Andon system generates and sends a stop-line control command. This command is a high-priority control message, explicitly containing the command type code, the target station number, and the stop-line action code requiring immediate execution. This stop-line control command is directly sent to the AGV control system's scheduling server via a highly reliable real-time control network. Upon receiving this high-priority command, the AGV control system's scheduling software immediately interrupts the regular scheduling logic and enters an abnormal response mode. The scheduling software first locks the device number of the AGV currently located at that station based on the station number in the command.

[0118] Subsequently, the scheduling software sends an emergency stop and lock command to the target AGV via wireless network. This command forcibly overrides any other commands that the AGV may be executing at the moment. Upon receiving this command, the onboard controller on the AGV immediately cuts off the power output of the drive motor and activates the mechanical brake, enabling the AGV to brake quickly and smoothly at its current position. At the same time, the onboard controller sets its status to "fault lockout" mode. In this mode, the AGV refuses to receive any forward or movement commands and only responds to reset or manual control commands from authorized personnel. Thus, the AGV carrying the current non-conforming vehicle is forcibly stopped and locked at the current tightening station, and the production line is interrupted at this station. At this time, on-site personnel can go to the station to check and handle the non-conforming point according to the alarm information prompt. Only after the problem is resolved and the system is manually confirmed and reset by authorized personnel on the quality and safety system will the system release the AGV's lockout status and the production line can resume operation.

[0119] Through the above steps, the system achieves immediate, automatic, and mandatory interception of quality defects on the production line. After determining that the quality is unqualified, the system not only generates an alarm containing accurate fault location information, but also simultaneously issues a high-priority stop command, directly controlling the AGV to stop and lock in place, ensuring that no unqualified products can flow into the next process, preventing the risk of defect amplification and subsequent rework. At the same time, the accurate alarm guides personnel to quickly locate and handle problems, greatly improving the response speed and effectiveness of quality control and the inherent security of the production system.

[0120] This application also provides a tightening data binding system for a commercial vehicle accompanying production line, which is applied in a production environment including a vehicle identification device, tightening tools, manual reporting buttons, a data binding system, a quality control system, and an AGV control system. The system is configured to perform the steps of the tightening data binding method for a commercial vehicle accompanying production line.

[0121] For the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0122] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for data binding of tightening on a commercial vehicle production line, the method being applied in a production environment including a vehicle identification device, tightening tools, a manual reporting button, a data binding system, a quality assurance system, and an AGV control system, characterized in that... Includes the following steps: When the AGV carrying the vehicle enters the tightening station, the vehicle identification device obtains the current vehicle's entry information. The data binding system retrieves the tightening program corresponding to the current vehicle based on the station entry information and switches the tightening program to the tightening tool. The operator uses the tightening tool to tighten the bolts of the current vehicle according to the tightening procedure. During this process, the tightening tool system associated with the tightening tool collects and generates the tightening data of the current vehicle. After the tightening tool system generates complete tightening data for the current vehicle, the operator triggers the manual reporting button to generate a reporting signal; The quality control system receives the work report signal and automatically verifies the tightening task execution result of the current vehicle based on the signal, determines whether the number of qualified points meets the requirements, and outputs the verification result. If the verification result indicates that the number of qualified points meets the requirements, the data binding system binds the tightening data with the current vehicle and stores the bound tightening data in the system database. After the tightening data is successfully stored, the AGV control system controls the AGV to move forward. If the verification result indicates that the number of qualified points does not meet the requirements, the quality control system will trigger an alarm and control the AGV to stop moving forward through the AGV control system.

2. The method for binding tightening data on a commercial vehicle production line according to claim 1, characterized in that, The process of obtaining the current vehicle's entry information through the vehicle identification device includes: When the AGV carrying the vehicle enters the identification area of ​​the tightening station, the vehicle identification device detects the vehicle entering the station event; The vehicle identification device reads the current vehicle's identity information to obtain the station entry information.

3. The method for binding tightening data on a commercial vehicle production line according to claim 1, characterized in that, The process of switching the tightening program to the tightening tool includes: The data binding system receives the entry information from the vehicle identification device and parses the current vehicle's identity identifier from the entry information; The data binding system matches the tightening program corresponding to the current vehicle model from the pre-stored program library based on the identity identifier; The data binding system sends the matched tightening program to the tightening tool to complete the program switching.

4. The method for binding tightening data on a commercial vehicle production line according to claim 1, characterized in that, The process for generating the tightening data includes: The operator uses the tightening tool to tighten each target bolt of the current vehicle in sequence according to the parameters set in the tightening program; During each tightening operation, the tightening tool system monitors and collects the tightening process parameters in real time to form a single tightening record. Once all target bolts on the current vehicle have been tightened, the tightening tool system integrates all single tightening records to generate complete tightening data corresponding to the current vehicle.

5. The method for binding tightening data on a commercial vehicle production line according to claim 4, characterized in that, The process for obtaining the single tightening record includes: During a single tightening operation, the tightening tool system collects tightening process parameters in real time, including at least torque and angle values. The tightening tool system associates the tightening process parameters collected in this operation with the bolt position identifier corresponding to this operation to generate a single tightening record containing the bolt position identifier, torque value, and angle value.

6. The method for binding tightening data on a commercial vehicle production line according to claim 1, characterized in that, The process for generating the work signal includes: Once the tightening tool system associated with the tightening tool generates complete tightening data for the current vehicle, the tightening tool system or the data binding system sends a ready-to-work prompt to the corresponding workstation. Upon receiving the readiness notification, the operator triggers the manual reporting button configured at their workstation; When the manual reporting button is triggered, a reporting signal containing the workstation identifier is generated and uploaded to the quality and safety system.

7. The method for binding tightening data on a commercial vehicle production line according to claim 1, characterized in that, The output process for the verification results includes: After receiving the work report signal, the quality Andon system requests and obtains the complete tightening data corresponding to the current vehicle from the data binding system or the tightening tool system based on the work station identifier in the work report signal. The quality Andon system will compare each single tightening record in the tightening data it acquires with the pre-stored process standards for the current vehicle model to determine whether it is a qualified point. The quality control system counts the number of all points that are judged as qualified, determines whether the number reaches the total number of qualified points required for the current vehicle model, and outputs the verification result indicating whether it passes or fails.

8. The method for binding tightening data on a commercial vehicle production line according to claim 7, characterized in that, If the verification result indicates that the number of qualified points meets the requirements, specifically including: After outputting the verification result indicating that the test has passed, the quality Anton system sends a data binding instruction to the data binding system; the data binding system responds to the data binding instruction and associates the complete tightening data of the current vehicle with the vehicle identification of the current vehicle. The data binding system will complete the binding of the tightening data and store it in the system database; After confirming that the tightening data has been successfully stored, the data binding system or the quality control system sends a vehicle release command to the AGV control system. The AGV control system responds to the vehicle release command and controls the AGV trolley carrying the current vehicle to leave the current tightening station and continue moving forward.

9. A method for binding tightening data on a commercial vehicle production line according to claim 7, characterized in that, If the verification result indicates that the number of qualified points does not meet the requirements, specifically including: After outputting the verification result indicating failure, the quality Anton system enters an exception handling state. In the abnormal handling state, the quality Andon system performs an alarm operation, which includes generating and sending an alarm message containing the current vehicle identifier, non-conforming point information, and workstation identifier; The quality control system sends a stop control command to the AGV control system. The AGV control system responds to the stop control command and controls the AGV trolley carrying the current vehicle to stop at the current workstation.

10. A tightening data binding system for a commercial vehicle production line, characterized in that, Applied to a production environment including a vehicle identification device, tightening tool, manual reporting button, data binding system, quality control system, and AGV control system, the system is configured to perform the steps of the tightening data binding method for a commercial vehicle accompanying production line as described in any one of claims 1-9.

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