Vehicle body connection process management method and device, storage medium and electronic device

Abstract

This disclosure relates to a management method, apparatus, storage medium, and electronic device for the vehicle body connection process, and pertains to the field of vehicle manufacturing technology. The method includes: acquiring process record data during the vehicle body connection process, the process record data including vehicle body markings, connection point markings, and operation process data; determining the quality status of a target connection point based on the operation process data, the target connection point being the connection point corresponding to the connection point marking; and, if the quality status indicates that the target connection point is abnormal, sending a notification message to notify an on-site inspection of the target connection point in a target vehicle body component, the target vehicle body component being the vehicle body component corresponding to the vehicle body marking. This method can reduce the management cost of the vehicle body connection process and improve the quality of vehicle body connections.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle manufacturing technology, and in particular to methods, apparatus, storage media, and electronic devices for managing the vehicle body connection process. Background Technology

[0002] The quality of the body-in-white connections is a crucial aspect of overall vehicle quality, directly impacting the vehicle's safety and lifespan. Therefore, effective management and control of the body-body connection process are essential during vehicle manufacturing to achieve satisfactory connection quality and ultimately guarantee the overall vehicle quality.

[0003] In related technologies, the body assembly process is generally managed by manually performing destructive / non-destructive inspections on body parts on the production line at a prescribed frequency. This management method faces problems such as a large demand for inspection personnel, high skill requirements, high labor costs, and a high probability of defects leaking out. Summary of the Invention

[0004] The purpose of this disclosure is to provide a method, apparatus, storage medium, and electronic device for managing the vehicle body connection process.

[0005] According to a first aspect of the present disclosure, a method for managing a vehicle body connection process is provided, comprising:

[0006] Acquire process record data during the vehicle body connection process, the process record data including vehicle body markings, connection point markings, and operation process data;

[0007] Based on the operation process data, the quality status of the target connection point is determined, where the target connection point is the connection point corresponding to the connection point identifier.

[0008] If the quality status indicates that the target connection point is abnormal, a notification message is sent. The notification message is used to notify the target body component to conduct an on-site inspection of the target connection point. The target body component is the body component corresponding to the body marking.

[0009] Optionally, sending a notification message when the quality status characterizes the target connection point as abnormal includes:

[0010] If the quality status indicates that the target connection point is abnormal, the notification information is sent to the inspection node corresponding to the connection point identifier.

[0011] Optionally, the target connection point is the connection point corresponding to resistance spot welding, and the operation process data includes at least one of the following: weld current value, weld energy value, weld quality score, and spatter status. Determining the quality status of the target connection point based on the operation process data includes:

[0012] If the weld point current value is less than the first current value, or if the weld point current value is empty, the quality status of the target connection point is determined to be a spot weld defect.

[0013] If the energy value of the weld point is less than the first energy value and the welding quality score of the weld point is less than the preset score, the quality status of the target connection point is determined to be a spot weld defect.

[0014] If the weld quality score of the target connection point is less than the preset score, and there is no missing weld or poor weld in the quality status of the target connection point, the quality status of the target connection point is determined to be abnormal in the spot welding process.

[0015] When the welding equipment used to characterize the spatter state of the target connection point is spattered, the quality state of the target connection point is determined to be spot weld spatter.

[0016] Wherein, if the quality status of the target connection point is a spot weld leak, spot weld failure, spot weld abnormality, or spot weld spatter, the quality status indicates that the target connection point is abnormal.

[0017] Optionally, determining the quality status of the target connection point as an abnormal spot welding process if the welding quality score of the weld point is less than the preset score includes:

[0018] If the welding quality score of the weld point is less than the preset score, and the number of first candidate connection points in the judgment period of the target connection point is greater than the first preset number, the quality status of the target connection point is determined to be abnormal spot welding process. The judgment period is divided into a period according to a second preset number of vehicle body markings. The first candidate connection point is a connection point with the connection point marking and whose corresponding welding quality score is less than the preset score.

[0019] If the welding quality score of the weld point is less than the preset score, and the number of second candidate connection points in the welding process of the welding equipment used for the target connection point on the target body part is greater than the third preset number, the quality status of the target connection point is determined to be that the spot welding process is abnormal. The second candidate connection point is a connection point with the body marking and whose corresponding welding quality score is less than the preset score.

[0020] Optionally, the target connection point is the connection point corresponding to the flow drill screw connection, and the operation process data includes at least one of the following: the exposed length value during the pre-loading stage, the maximum final tightening torque value during the tightening stage, the equipment timeout alarm status, the exposed length value of the screw head, and the process result. Determining the quality status of the target connection point based on the operation process data includes:

[0021] If the exposed length value during the pre-compression stage is less than the first exposed length value, and the process fails, the quality status of the target connection point is determined to be a missing bolt connection.

[0022] If the maximum final tightening torque value during the tightening stage is less than the preset torque value and the process fails, the quality status of the target connection point is determined to be abnormal torque.

[0023] If the device timeout alarm status is "alarm present", the quality status of the target connection point is determined to be "abnormal flow drilling screw connection process".

[0024] If the exposed length of the nail head is less than the second exposed length, the quality status of the target connection point is determined to be that the nail head height is too high.

[0025] Specifically, if the quality status of the target connection point is characterized by missing bolts, abnormal torque, abnormal flow drilling bolting process, or excessive screw head height, then the quality status indicates that the target connection point is abnormal.

[0026] Optionally, the target connection point is the connection point corresponding to the stud weld, and the operation process data includes at least one of the following: the welding data acquisition status of the stud, the welding current value of the stud, the welding energy value of the stud, and the weld pool depth value. Determining the quality status of the target connection point based on the operation process data includes:

[0027] If the welding data acquisition status is no data acquisition, or the welding current value of the stud is empty, the quality status of the target connection point is determined to be stud leakage.

[0028] If the welding current value of the stud is less than the second current value, or the welding energy value of the stud is less than the second energy value, or the molten pool depth value is greater than the first preset depth value, the quality state of the target connection point is determined to be insufficient molten pool.

[0029] If the welding current value of the stud is greater than the third current value, or the welding energy value of the stud is greater than the third energy value, or the molten pool depth value is less than the second preset depth value, the quality state of the target connection point is determined to be that the molten pool is too large.

[0030] Wherein, if the quality status of the target connection point is a stud leak, insufficient molten pool, or excessively large molten pool, the quality status indicates that the target connection point is abnormal.

[0031] Optionally, the target connection point is the connection point corresponding to self-piercing riveting. The operation process data includes at least one of the following: no-nail alarm signal acquisition status, nail length detection alarm signal acquisition status, plate thickness detection alarm signal acquisition status, rivet type error alarm signal acquisition status, rivet data acquisition status, maximum force exceeding alarm signal acquisition status, riveting curve below error curve acquisition status, riveting curve rising above error curve acquisition status, and riveting curve longer than error curve acquisition status. Determining the quality status of the target connection point based on the operation process data includes:

[0032] If at least one of the following states—no rivet alarm signal acquisition state, rivet length detection alarm signal acquisition state, plate thickness detection alarm signal acquisition state, rivet model error alarm signal acquisition state, and rivet data acquisition state—indicates that the corresponding signal has been acquired, the quality status of the target connection point is determined to be a missing rivet.

[0033] If the alarm signal acquisition status exceeds the maximum force and a signal is acquired, the quality status of the target connection point is determined to be head height exceeding tolerance.

[0034] If at least one of the following conditions indicates that a corresponding signal has been acquired: the riveting curve is lower than the error curve acquisition state, the riveting curve rises above the error curve acquisition state, or the riveting curve is longer than the error curve acquisition state, then the quality state of the target connection point is determined to be an abnormality in the self-piercing riveting process.

[0035] Wherein, if the quality status of the target connection point is that the rivet is missing, the head height is out of tolerance, or the self-piercing riveting process is abnormal, the quality status indicates that the target connection point is abnormal.

[0036] According to a second aspect of the present disclosure, a management device for a vehicle body connection process is provided, comprising:

[0037] The acquisition module is configured to acquire process record data during the vehicle body connection process, the process record data including vehicle body markings, connection point markings, and operation process data;

[0038] The determination module is configured to determine the quality status of the target connection point based on the operation process data, wherein the target connection point is the connection point corresponding to the connection point identifier;

[0039] The sending module is configured to send a notification message when the quality status characterizes the target connection point as abnormal. The notification message is used to notify the target connection point in the target body component to be inspected on-site. The target body component is the body component corresponding to the body identification.

[0040] According to a third aspect of the present disclosure, a computer-readable storage medium is provided that stores computer program instructions thereon, which, when executed by a processor, implement the steps of the vehicle body connection process management method provided in the first aspect of the present disclosure.

[0041] According to a fourth aspect of the present disclosure, an electronic device is provided, comprising:

[0042] processor;

[0043] Memory used to store processor-executable instructions;

[0044] The processor is configured to execute the executable instructions stored in the memory to implement the steps of the vehicle body connection process management method provided in the first aspect of this disclosure.

[0045] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0046] By acquiring process record data during the vehicle body assembly process, and based on the operational process data included in the process record data, the quality status of the target assembly point is determined. If the quality status indicates that the target assembly point is abnormal, a notification message can be sent to notify the on-site inspection of the target assembly point in the target vehicle body component. By collecting operational process data corresponding to the assembly point and applying the collected data to determine the quality status of the assembly point, the function of preliminary quality status monitoring of all assembly points is achieved. This reduces the risk of defects being lost due to gaps in frequency sampling inspections. Furthermore, further on-site inspections of assembly points whose preliminary quality status is determined to be abnormal can ensure the accuracy of vehicle body assembly quality management, while reducing the labor costs of manual inspections. Therefore, the method of this disclosure embodiment can reduce the management cost of the vehicle body assembly process and improve the quality of vehicle body assembly.

[0047] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0048] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0049] Figure 1 This is a flowchart illustrating a method for managing a vehicle body connection process according to an exemplary embodiment.

[0050] Figure 2 This is a flowchart illustrating a method for managing a vehicle body connection process according to an exemplary embodiment.

[0051] Figure 3 This is a block diagram illustrating a vehicle body connection process management device according to an exemplary embodiment.

[0052] Figure 4 This is a block diagram illustrating an electronic device according to an exemplary embodiment. Detailed Implementation

[0053] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0054] It should be noted that all actions involving the acquisition of signals, information, or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where the application is located, and with the authorization granted by the owner of the relevant device.

[0055] Figure 1 This is a flowchart illustrating a method for managing a vehicle body connection process according to an exemplary embodiment. For example... Figure 1 As shown, this disclosure provides a method for managing the vehicle body connection process. This method can be executed by an electronic device, specifically through a digital system within the electronic device. Figure 1 As shown, the method may include the following steps:

[0056] Step S110: Obtain process record data during the vehicle body connection process. The process record data includes vehicle body markings, connection point markings, and operation process data.

[0057] The vehicle body in this embodiment can also be understood as a white body or the body itself, referring to a vehicle body that has been welded but not yet painted, and can be composed of multiple parts or components connected by connecting equipment. The connecting equipment includes, for example, various welding machines, riveting equipment, and bolting equipment.

[0058] In this embodiment of the disclosure, the process record data during the vehicle body connection process can be the working data corresponding to the vehicle body connection process performed by the connection equipment based on the connection points.

[0059] In this embodiment of the present disclosure, during the vehicle body connection process, the connection device can connect parts or components according to the connection points according to the pre-defined vehicle body connection procedures. When connecting parts or components according to the connection points, the connection device can record the operation process data of the connection points. Then, the connection device can bind the operation process data generated during the connection process with the connection point identifier and the vehicle body identifier to obtain the operation process data corresponding to the vehicle body identifier and the connection point identifier.

[0060] In some implementations, to enable the connecting device to bind the operational process data generated during the connection process, connection point identifiers, and vehicle body identifiers to obtain operational process data corresponding to the vehicle body identifier and the connection point identifier, the manufacturing execution system can first transmit the pre-production vehicle body identifier (e.g., vehicle number) to the digitization system. Then, the digitization system can transmit the production vehicle body identifier to the line programmable logic controller (PLC), which in turn transmits the vehicle body identifier to the connecting device. In this way, the connecting device can bind the operational process data generated during the connection process with the connection point identifiers and vehicle body identifiers using the connecting device group control software installed in the industrial control computer, obtaining the process record data corresponding to each connection point. Furthermore, the industrial control computer can send the process record data corresponding to the connection points to the digitization system, allowing the digitization system to obtain the process record data corresponding to each connection point during the vehicle body connection process.

[0061] In some implementations, the connection points during the vehicle body assembly process may include connection points corresponding to resistance spot welding, flow drilling and bolting, stud welding, self-piercing riveting, and adhesive application. The operational data for each connection point differs depending on the specific process.

[0062] It should be noted that each process may have one or more connection points within the same vehicle body. Each connection point has a unique identifier.

[0063] Step S120: Determine the quality status of the target connection point based on the operation process data. The target connection point is the connection point corresponding to the connection point identifier.

[0064] In this embodiment of the disclosure, after acquiring any process record data, the quality status of the target connection point corresponding to that process record data can be determined based on the operation process data included in the process record data. The connection point corresponding to the vehicle body markings and connection point markings included in the process record data is the target connection point. That is, based on the process record data, the specific vehicle body and specific connection points on the vehicle body can be accurately located.

[0065] In this embodiment of the disclosure, the quality status of the target connection point can include an abnormal state and a normal state. The quality status under the abnormal and normal states can vary depending on the type of connection point, which will be described in detail in subsequent embodiments.

[0066] Step S130: If the quality status characterization of the target connection point is abnormal, a notification message is sent. The notification message is used to notify the on-site inspection of the target connection point in the target body part. The target body part is the body part corresponding to the body identification.

[0067] In this embodiment of the disclosure, if the quality status of the target connection point is abnormal, it indicates that there may be a problem with the connection process operation corresponding to the target connection point, which may reduce the quality of the vehicle body connection. Therefore, when the quality status characterizes the target connection point as abnormal, the digital system in the electronic device can send a notification message to notify the inspector to conduct an on-site inspection of the target connection point in the target vehicle body component.

[0068] In some implementations, after inspectors conduct on-site inspections at the target connection point, if it is determined that there are no defects at the target connection point, the quality status of the target connection point can be changed to a normal state, and the target body part corresponding to the target connection point can be released to the next process. If it is determined that there are defects at the target connection point, the target body part corresponding to the target connection point can be sent to the rework station for repair. After the rework is completed, the quality status of the target connection point can be changed to a normal state, and the target body part corresponding to the target connection point can be released to the next process.

[0069] Among them, the body parts can be the complete body or the parts that are connected to form the complete body, such as the lower body, the side body, etc.

[0070] By employing the above method, process record data during the vehicle body connection process is acquired. Based on the operational process data included in the process record data, the quality status of the target connection point is determined. If the quality status indicates an abnormality at the target connection point, a notification message can be sent to facilitate on-site inspection of the target connection point in the target vehicle body component. By collecting operational process data corresponding to the connection point and applying the collected data to determine the quality status of the connection point, the function of preliminary quality status monitoring of all connection points is achieved. This reduces the risk of defects being lost due to gaps in frequency sampling inspections. Furthermore, additional on-site inspections of connection points initially determined to be abnormal can ensure the accuracy of vehicle body connection quality management while reducing the labor costs associated with manual inspections. Therefore, the method of this embodiment can reduce the management cost of the vehicle body connection process and improve the quality of vehicle body connections.

[0071] In some implementations, sending a notification message when the quality status characterization of the target connection point is abnormal may include the following steps:

[0072] If the quality status characterization of the target connection point is abnormal, a notification message is sent to the inspection node corresponding to the connection point identifier.

[0073] In this embodiment of the disclosure, the connection point belongs to the corresponding line operation stage. In each line operation stage, a manual workstation can be set up, that is, a manual inspection node can be set up. The digital system can pre-store the association relationship between the connection point and the inspection node. Thus, when the quality status characterization of the target connection point is abnormal, the digital system can find the inspection node corresponding to the connection point identifier according to the association relationship, and then send a notification message to the inspection node corresponding to the connection point identifier to notify the operator of the inspection node to go to the connection site of the target connection point for on-site inspection to further confirm whether there is a connection defect in the target connection point.

[0074] By using the above method, a manual inspection node is set up at each stage of the line operation, and a notification message is sent to the corresponding manual inspection node when the connection point is abnormal, so as to notify the operator of the corresponding inspection node to carry out the inspection nearby, which can improve the efficiency of manually handling defects at the inspection point.

[0075] As can be seen from the foregoing, the quality status under abnormal and normal conditions can vary depending on the type of connection point.

[0076] In some implementations, the target connection point is the connection point corresponding to resistance spot welding. The operation process data recorded by the connection equipment may include at least one of the following: weld current value, weld energy value, weld quality score, and spatter status. In this case, step S102, determining the quality status of the target connection point based on the operation process data, may include the following steps:

[0077] If the weld current value is less than the first current value, or the weld current value is empty, the quality status of the target connection point is determined to be spot weld leakage.

[0078] If the weld energy value is less than the first energy value and the weld quality score is less than the preset score, the quality status of the target connection point is determined to be a spot weld defect.

[0079] If the weld quality score of the target connection point is less than the preset score, and there is no missing weld or false weld in the quality status of the target connection point, the quality status of the target connection point is determined to be abnormal in the spot welding process.

[0080] When the welding equipment used to characterize the spatter state of the target connection point is spattered, the quality state of the target connection point is determined to be spot weld spatter.

[0081] Among them, when the quality status of the target connection point is spot welding leakage, spot welding cold welding, spot welding process abnormality or spot welding spatter, the quality status characterizes the target connection point as abnormal.

[0082] In this embodiment of the disclosure, if the operation process data recorded by the connecting device includes the solder joint current value, and the solder joint current value is less than a first current value, for example, less than 1KA, then the quality status of the target connection point can be determined to be a spot weld defect. Alternatively, if the connecting device does not collect the solder joint current value of the target connection point, i.e., the solder joint current value is empty, the quality status of the target connection point can also be determined to be a spot weld defect. The solder joint current value can also be referred to as the actual welding current value of the solder joint.

[0083] This process can be represented by the following logical judgment formula:

[0084] Judgment formula: 14181 < "first current value" or 14181 = "N / A".

[0085] Where 14181 represents the actual welding current value at the connection point, and N / A represents a null value.

[0086] Furthermore, if the operation data recorded by the connection device includes the solder joint energy value and the solder joint welding quality score, and the solder joint energy value is less than the first energy value and the solder joint welding quality score is less than the preset score, then the quality status of the target connection point can be determined as a spot weld defect. The solder joint welding quality score characterizes the degree of difference between the welding process corresponding to the target connection point and the ideal welding process; the smaller the difference, the higher the solder joint welding quality score, and vice versa.

[0087] This process can be represented by the following logical judgment formula:

[0088] Judgment formula: 8073 < "First Energy Value" and 14287 < "Preset Score".

[0089] Here, 8073 and 14287 represent the collected energy and quality score, respectively.

[0090] Furthermore, if the operation process data recorded by the connecting device includes the solder joint current value, solder joint energy value, and solder joint welding quality score, and if the quality status of the target connection point does not show any missing or false soldering, and the solder joint welding quality score is less than the preset score, then the quality status of the target connection point can be determined to be an abnormal spot welding process.

[0091] This process can be represented by the following logical judgment formula:

[0092] Judgment formula: not (spot weld leakage) and not (spot weld malfunction) and 14287 < "0.8".

[0093] Furthermore, if the operation process data recorded by the connecting device includes the spatter status, and the spatter status indicates that the welding equipment used at the target connection point has spatter, then the quality status of the target connection point can be determined as spot welding spatter.

[0094] The spatter status can be determined by the "spatter time" field in the welding machine. When the value of this field is greater than 1, the recorded spatter status indicates that there is spatter in the welding equipment used at the target connection point.

[0095] In some implementations, the process data includes solder joint current value, solder joint energy value, solder joint welding quality score, and spatter status.

[0096] Furthermore, to further improve the accuracy of spot welding process anomaly detection, in some implementations, if the weld quality score of the weld point is less than a preset score, determining the quality status of the target connection point as an anomaly in the spot welding process may include the following steps:

[0097] If the welding quality score of the weld point is less than the preset score, and the number of first candidate connection points in the judgment period of the target connection point is greater than the first preset number, the quality status of the target connection point is determined to be abnormal spot welding process. The judgment period is divided into a period according to the second preset number of vehicle body markings. The first candidate connection point is a connection point with a connection point marking and the corresponding weld point welding quality score is less than the preset score.

[0098] If the welding quality score of the weld point is less than the preset score, and the number of second candidate connection points in the welding process of the target body part by the welding equipment used for the target connection point is greater than the third preset number, the quality status of the target connection point is determined to be abnormal spot welding process.

[0099] In this embodiment of the disclosure, a cycle can be defined as connecting a second preset number of car bodies, for example, connecting 200 car bodies as a cycle. Within this cycle, for the same connection point, such as a target connection point, if the welding quality score of the weld point corresponding to the target connection point is less than a preset score, for example, 0.8, it is determined as a first candidate connection point corresponding to the target connection point. If the number of first candidate connection points is greater than the first preset number, for example, 3, the quality status of the target connection point can be determined as abnormal spot welding process.

[0100] For example, for the target connection point, in the process of 200 body connection, for each body, there is a weld quality score for the target connection point, so there are a total of 200 weld quality scores. If the number of connection points with a score less than 0.8 is greater than 3 among these 200 weld quality scores, then the quality status of the target connection point is determined to be abnormal in the spot welding process.

[0101] It should be noted that in this embodiment of the disclosure, after each cycle ends, the number of the first candidate connection points is reset to 0 and counted again.

[0102] Furthermore, in this embodiment of the present disclosure, if, during the welding process of the same welding machine on the same vehicle body parts, the number of connection points of the vehicle body processed by the welding machine that have a welding quality score less than a preset score is greater than a third preset number, then the quality status of the target connection point is determined to be an abnormal spot welding process.

[0103] For example, for a target connection point in the first vehicle body, assuming the target connection point is connected by a resistance spot welding device, during the connection process of the first vehicle body, for all connection points in the first vehicle body processed by the resistance spot welding device, if the number of connection points with a corresponding weld quality score of less than 0.8 is greater than 3, then the quality status of the target connection point is determined to be abnormal in the spot welding process.

[0104] Using the above method, considering that when there is an abnormality in the spot welding process, the welding equipment may usually cause the same abnormality to multiple machines, for the resistance spot welding process, not only is the welding quality score of the target body connection point judged, but also the quality status of the target connection point is determined by combining the operation process data of the corresponding target connection point in multiple body connection processes, or the operation process data of multiple connection points in the same body. This can take into account the overall welding characteristics of the welding equipment, thereby reducing the possibility of misjudgment.

[0105] In some implementations, the target connection point is the connection point corresponding to the flow drill screw connection. The operation process data recorded by the connection equipment may include at least one of the following: the exposed length value during the pre-compression stage, the maximum final tightening torque value during the tightening stage, the equipment timeout alarm status, the exposed length value of the screw head, and the process result. In this case, step S102, determining the quality status of the target connection point based on the operation process data, may include the following steps:

[0106] If the exposed length value during the pre-compression stage is less than the first exposed length value and the process fails, the quality status of the target connection point is determined to be a missing bolt connection.

[0107] If the maximum final tightening torque value during the tightening stage is less than the preset torque value and the process fails, the quality status of the target connection point is determined to be abnormal torque.

[0108] If the equipment timeout alarm status is "alarm present", the quality status of the target connection point is determined to be an abnormality in the flow drilling screw connection process.

[0109] If the exposed length of the nail head is less than the second exposed length, the quality status of the target connection point is determined to be that the nail head height is too high.

[0110] Among them, when the quality status of the target connection point is a missing screw connection, abnormal torque, abnormal flow drilling screw connection process, or excessive screw head height, the quality status characterizes the target connection point as abnormal.

[0111] In this embodiment of the present disclosure, if the operation process data recorded by the connecting device includes the exposed length value of the pre-compression stage and the process result, and if the exposed length value of the pre-compression stage is less than the first exposed length value, for example, less than 15.8, and the process result is a failure, for example, the process result is a value of "0", then the quality status of the target connection point is determined to be a missing bolt connection.

[0112] In this embodiment of the disclosure, if the operation process data recorded by the connecting device includes the maximum final tightening torque value and the process result during the tightening stage, and the maximum final tightening torque value during the tightening stage is less than the preset torque value, and the process result is a failure, then the quality status of the target connection point is determined to be abnormal torque.

[0113] In this embodiment of the disclosure, if the operation process data recorded by the connected device includes the device timeout alarm status, and the device timeout alarm status indicates that an alarm exists, the quality status of the target connection point is determined to be an abnormality in the flow drilling screw connection process.

[0114] In any stage of the flow drilling and screwing process, if a timeout alarm occurs, the equipment's timeout alarm status can be determined as an alarm presence. For example, if any of the following timeout alarms occur: pre-compression stage, puncture stage, threading stage, or tightening stage, the equipment's timeout alarm status can be determined as an alarm presence.

[0115] In this embodiment of the disclosure, if the operation process data recorded by the connecting device includes the exposed length value of the nail head, and the exposed length value of the nail head is less than the second exposed length value, for example, less than 0.05, then the quality status of the target connection point is determined to be that the nail head height is too high.

[0116] In some implementations, the operational process data includes the exposed length value during the pre-compression stage, the maximum final tightening torque value during the tightening stage, the equipment timeout alarm status, the exposed length value of the nail head, and the process results.

[0117] In some implementations, the target connection point is the connection point corresponding to the stud weld. The operation process data recorded by the connection equipment may include at least one of the following: the welding data acquisition status of the stud, the welding current value of the stud, the welding energy value of the stud, and the weld pool depth value. In this case, step S102, determining the quality status of the target connection point based on the operation process data, may include the following steps:

[0118] If the welding data acquisition status is "no data acquired" or the welding current value of the stud is empty, the quality status of the target connection point is determined to be stud leakage.

[0119] If the welding current value of the stud is less than the second current value, or the welding energy value of the stud is less than the second energy value, or the molten pool depth value is greater than the first preset depth value, the quality state of the target connection point is determined to be insufficient molten pool.

[0120] If the welding current value of the stud is greater than the third current value, or the welding energy value of the stud is greater than the third energy value, or the molten pool depth value is less than the second preset depth value, the quality state of the target connection point is determined to be that the molten pool is too large.

[0121] In cases where the quality status of the target connection point is characterized by stud leakage, insufficient molten pool, or excessively large molten pool, the quality status indicates that the target connection point is abnormal.

[0122] In this embodiment of the disclosure, if the operation process data recorded by the connecting device includes the welding data acquisition status of the stud, and the welding data acquisition status is no data acquired, then the quality status of the target connection point is determined to be stud leakage.

[0123] In this embodiment of the present disclosure, if the operation process data recorded by the connecting device includes the welding current value of the stud, and the welding current value of the stud is empty, then the quality status of the target connection point is determined to be stud leakage; if the welding current value of the stud is less than the second current value, then the quality status of the target connection point is determined to be insufficient weld pool (insufficient penetration / strength); if the welding current value of the stud is greater than the third current value, then the quality status of the target connection point is determined to be excessive weld pool (weld bead).

[0124] In this embodiment of the disclosure, if the operation process data recorded by the connecting device includes the welding energy value of the stud, and the welding energy value of the stud is less than the second energy value, then the quality state of the target connection point is determined to be insufficient molten pool; if the welding energy value of the stud is greater than the third energy value, then the quality state of the target connection point is determined to be excessive molten pool.

[0125] In this embodiment of the disclosure, if the operation process data recorded by the connecting device includes a molten pool depth value, and the molten pool depth value is greater than a first preset depth value, then the quality status of the target connection point is determined to be insufficient molten pool; if the molten pool depth value is less than a second preset depth value, then the quality status of the target connection point is determined to be excessive molten pool. The molten pool depth value is a negative number; a larger molten pool depth value indicates a shallower molten pool, while a smaller molten pool depth value indicates a deeper molten pool.

[0126] In some implementations, the operational process data includes the welding data acquisition status of the stud, the welding current value of the stud, the welding energy value of the stud, and the molten pool depth value.

[0127] In some implementations, the target connection point is the connection point corresponding to self-piercing riveting. The operation process data recorded by the connection device may include at least one of the following: no rivet alarm signal acquisition status, rivet length detection alarm signal acquisition status, plate thickness detection alarm signal acquisition status, rivet model error alarm signal acquisition status, rivet data acquisition status, maximum force exceeding alarm signal acquisition status, riveting curve lower than error curve acquisition status, riveting curve rising above error curve acquisition status, and riveting curve longer than error curve acquisition status. In this case, step S102, determining the quality status of the target connection point based on the operation process data, may include the following steps:

[0128] If at least one of the following states—no rivet alarm signal acquisition, rivet length detection alarm signal acquisition, plate thickness detection alarm signal acquisition, rivet model error alarm signal acquisition, or rivet data acquisition—is characterized by the acquisition of the corresponding signal, the quality status of the target connection point is determined to be a missing rivet.

[0129] If a signal is acquired when the maximum force alarm signal acquisition status is exceeded, the quality status of the target connection point is determined to be head height exceeding tolerance.

[0130] If at least one of the following conditions indicates that the riveting curve is below the error curve acquisition state, the riveting curve rises above the error curve acquisition state, or the riveting curve is longer than the error curve acquisition state, the quality state of the target connection point is determined to be an abnormality in the self-piercing riveting process.

[0131] Among them, when the quality status of the target connection point is missing rivets, head height exceeds tolerance, or the self-piercing riveting process is abnormal, the quality status characterizes the target connection point as abnormal.

[0132] In this embodiment of the disclosure, if the operation process data recorded by the connecting device includes the status of no-nail alarm signal acquisition, nail length detection alarm signal acquisition, plate thickness detection alarm signal acquisition, rivet model error alarm signal acquisition, and rivet data acquisition, and at least one of the following indicates that the corresponding signal has been acquired, then the quality status of the target connection point is that the rivet is missing.

[0133] In this embodiment of the disclosure, if the operation process data recorded by the connected device includes the maximum force alarm signal acquisition state, and the maximum force alarm signal acquisition state indicates that a signal has been acquired, then the quality status of the target connection point is determined to be head height exceeding tolerance.

[0134] In this embodiment of the disclosure, if the operation process data recorded by the connecting device includes the riveting curve being lower than the error curve acquisition state, the riveting curve rising above the error curve acquisition state, or the riveting curve being longer than the error curve acquisition state, and at least one of these conditions indicates that a corresponding signal has been acquired, then the quality state of the target connection point is determined to be an abnormality in the self-piercing riveting process.

[0135] In some implementations, the operational process data includes the acquisition status of no-nail alarm signals, nail length detection alarm signals, plate thickness detection alarm signals, rivet model error alarm signals, rivet data, maximum force exceeding alarm signals, riveting curve below error curve, riveting curve rising above error curve, and riveting curve longer than error curve.

[0136] Below, in conjunction with Figure 2 The flowchart shown illustrates the management method for the vehicle body connection process according to an embodiment of this disclosure. Figure 2 As shown:

[0137] The Manufacturing Execution System (MES) transmits the pre-production body number to the digital system, which in turn transmits the production body number to the line's programmable logic controller (PLC). The PLC then transmits the body number to various connecting devices. These connecting devices include resistance spot welding equipment, flow drilling and screwing equipment, stud welding equipment, self-piercing riveting equipment, and adhesive application equipment.

[0138] Each connecting device collects operational process data during the connection process and sends it to the industrial control computer. The connecting device group control software in the industrial control computer binds the received operational process data with the connection point identifier and the vehicle body identifier to obtain the process record data corresponding to each connection point.

[0139] The industrial control computer can send the process record data corresponding to the connection point to the digital system. Then, the digital system analyzes the process record data, determines the quality status of each connection point in each body, and sends a notification message to the group control screen of the online inspection station corresponding to the abnormal connection point. In this way, the operators of the online inspection station can conduct on-site inspection of the abnormal connection point.

[0140] Figure 3 This is a block diagram illustrating a vehicle body connection process management device according to an exemplary embodiment. (Refer to...) Figure 3 The vehicle body connection process management device 300 includes:

[0141] The acquisition module 310 is configured to acquire process record data during the vehicle body connection process, the process record data including vehicle body markings, connection point markings and operation process data;

[0142] The determination module 320 is configured to determine the quality status of the target connection point based on the operation process data, wherein the target connection point is the connection point corresponding to the connection point identifier;

[0143] The sending module 330 is configured to send a notification message when the quality status characterizes the target connection point as abnormal. The notification message is used to notify the target connection point in the target body component to be inspected on-site. The target body component is the body component corresponding to the body identification.

[0144] Optionally, the sending module 330 is further configured to send the notification information to the check node corresponding to the connection point identifier when the quality status characterizes the target connection point as abnormal.

[0145] Optionally, the target connection point is a connection point corresponding to resistance spot welding. The operation process data includes at least one of the following: weld point current value, weld point energy value, weld point welding quality score, and spatter status. The determining module 320 is further configured to: determine the quality status of the target connection point as spot welding leakage when the weld point current value is less than a first current value or the weld point current value is empty; determine the quality status of the target connection point as spot welding cold weld when the weld point energy value is less than a first energy value and the weld point welding quality score is less than a preset score; determine the quality status of the target connection point as spot welding process abnormal when the weld point welding quality score is less than the preset score, even if no spot welding or cold weld occurs; and determine the quality status of the target connection point as spot welding spatter when the spatter status indicates that the welding equipment used for the target connection point has spatter. Wherein, when the quality status of the target connection point is spot welding leakage, spot welding cold weld, spot welding process abnormality, or spot welding spatter, the quality status indicates that the target connection point is abnormal.

[0146] Optionally, the determining module 320 is further configured to determine the quality status of the target connection point as an abnormal spot welding process when the weld quality score of the weld point is less than the preset score and the number of first candidate connection points in the determination period of the target connection point is greater than the first preset number. The determination period is divided into periods based on a second preset number of vehicle body markings. The first candidate connection point is a connection point with the connection point marking and whose corresponding weld quality score is less than the preset score. The module also determines the quality status of the target connection point as an abnormal spot welding process when the weld quality score of the weld point is less than the preset score and the number of second candidate connection points in the welding process of the target vehicle body component by the welding machine used by the target connection point is greater than the third preset number. The second candidate connection point is a connection point with the vehicle body marking and whose corresponding weld quality score is less than the preset score.

[0147] Optionally, the target connection point is the connection point corresponding to the flow drilling screw connection. The operation process data includes at least one of the following: the exposed length value during the pre-compression stage, the maximum final tightening torque value during the tightening stage, the equipment timeout alarm status, the exposed length value of the screw head, and the process result. The determination module 320 is further configured to determine the quality status of the target connection point as a missing screw connection when the exposed length value during the pre-compression stage is less than a first exposed length value and the process result is a failure; determine the quality status of the target connection point as a torque abnormality when the maximum final tightening torque value during the tightening stage is less than a preset torque value and the process result is a failure; determine the quality status of the target connection point as a flow drilling screw connection process abnormality when the equipment timeout alarm status is present; and determine the quality status of the target connection point as a screw head height too high when the exposed length value of the screw head is less than a second exposed length value. Wherein, when the quality status of the target connection point is a missing screw connection, torque abnormality, flow drilling screw connection process abnormality, or screw head height too high, the quality status indicates that the target connection point is abnormal.

[0148] Optionally, the target connection point is the connection point corresponding to the stud weld. The operation process data includes at least one of the following: the welding data acquisition status of the stud, the welding current value of the stud, the welding energy value of the stud, and the molten pool depth value. The determination module 320 is further configured to determine the quality status of the target connection point as stud leakage when the welding data acquisition status is no data acquired or the welding current value of the stud is empty; determine the quality status of the target connection point as insufficient molten pool when the welding current value of the stud is less than a second current value, or the welding energy value of the stud is less than a second energy value, or the molten pool depth value is greater than a first preset depth value; and determine the quality status of the target connection point as excessive molten pool when the welding current value of the stud is greater than a third current value, or the welding energy value of the stud is greater than a third energy value, or the molten pool depth value is less than a second preset depth value. Wherein, when the quality status of the target connection point is stud leakage, insufficient molten pool, or excessive molten pool, the quality status indicates that the target connection point is abnormal.

[0149] Optionally, the target connection point is the connection point corresponding to self-piercing riveting. The operation process data includes at least one of the following: no-nail alarm signal acquisition status, nail length detection alarm signal acquisition status, plate thickness detection alarm signal acquisition status, rivet type error alarm signal acquisition status, rivet data acquisition status, maximum force exceeding alarm signal acquisition status, riveting curve lower than error curve acquisition status, riveting curve rising above error curve acquisition status, and riveting curve longer than error curve acquisition status. The module 320 is further configured to determine the status of at least one of the following: no-nail alarm signal acquisition status, nail length detection alarm signal acquisition status, plate thickness detection alarm signal acquisition status, rivet type error alarm signal acquisition status, and rivet data acquisition status. If at least one of the following states indicates that a corresponding signal has been acquired, the quality state of the target connection point is determined to be a missing rivet; if the maximum force alarm signal acquisition state indicates that a signal has been acquired, the quality state of the target connection point is determined to be a head height exceeding tolerance; if at least one of the following states indicates that a corresponding signal has been acquired: the riveting curve is lower than the error curve acquisition state, the riveting curve rises above the error curve acquisition state, or the riveting curve is longer than the error curve acquisition state, the quality state of the target connection point is determined to be an abnormality in the self-piercing riveting process; wherein, if the quality state of the target connection point is a missing rivet, a head height exceeding tolerance, or an abnormality in the self-piercing riveting process, the quality state indicates that the target connection point is abnormal.

[0150] Regarding the vehicle body connection process management device 300 in the above embodiments, the specific methods by which each module performs operations have been described in detail in the embodiments related to the method, and will not be elaborated here.

[0151] This disclosure also provides a computer-readable storage medium having stored thereon computer program instructions that, when executed by a processor, implement the steps of the vehicle body connection process management method provided in this disclosure.

[0152] Figure 4 This is a block diagram illustrating an electronic device 400 according to an exemplary embodiment. (Refer to...) Figure 4 The electronic device 400 may include one or more of the following components: processing component 402, memory 404, power component 406, multimedia component 408, audio component 410, input / output (I / O) interface 412, sensor component 414, and communication component 416.

[0153] Processing component 402 typically controls the overall operation of electronic device 400, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 402 may include one or more processors 420 to execute instructions to complete all or part of the steps of the vehicle body connection process management method described above. Furthermore, processing component 402 may include one or more modules to facilitate interaction between processing component 402 and other components. For example, processing component 402 may include a multimedia module to facilitate interaction between multimedia component 408 and processing component 402.

[0154] Memory 404 is configured to store various types of data to support the operation of electronic device 400. Examples of this data include instructions for any application or method operating on electronic device 400, contact data, phonebook data, messages, pictures, videos, etc. Memory 404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0155] Power component 406 provides power to various components of electronic device 400. Power component 406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 400.

[0156] Multimedia component 408 includes a screen that provides an output interface between electronic device 400 and a user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 408 includes a front-facing camera and / or a rear-facing camera. When electronic device 400 is in an operating mode, such as a shooting mode or video mode, the front-facing camera and / or rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0157] Audio component 410 is configured to output and / or input audio signals. For example, audio component 410 includes a microphone (MIC) configured to receive external audio signals when electronic device 400 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 404 or transmitted via communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.

[0158] I / O interface 412 provides an interface between processing component 402 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0159] Sensor assembly 414 includes one or more sensors for providing state assessments of various aspects of electronic device 400. For example, sensor assembly 414 may detect the on / off state of electronic device 400, the relative positioning of components such as the display and keypad of electronic device 400, changes in position of electronic device 400 or a component of electronic device 400, the presence or absence of user contact with electronic device 400, orientation or acceleration / deceleration of electronic device 400, and temperature changes of electronic device 400. Sensor assembly 414 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 414 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0160] Communication component 416 is configured to facilitate wired or wireless communication between electronic device 400 and other devices. Electronic device 400 can access wireless networks based on communication standards, such as WiFi, 2G, 3G, 4G, 5G, etc., or combinations thereof. In one exemplary embodiment, communication component 416 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 416 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0161] In an exemplary embodiment, the electronic device 400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the management method of the above-described vehicle body connection process.

[0162] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 404 including instructions, which can be executed by a processor 420 of an electronic device 400 to complete the management method for the vehicle body connection process described above. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0163] In another exemplary embodiment, a computer program product is also provided, which includes a computer program executable by a programmable device, the computer program having a code portion for performing the management method of the vehicle body connection process described above when executed by the programmable device.

[0164] In another exemplary embodiment, an electronic device is also provided, comprising:

[0165] processor;

[0166] Memory used to store processor-executable instructions;

[0167] The processor is configured to execute the executable instructions stored in the memory to implement the above-described vehicle body connection process management method.

[0168] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0169] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A method of managing a vehicle body joining process, characterized by, include: Acquire process record data during the vehicle body connection process, the process record data including vehicle body markings, connection point markings, and operation process data; Based on the operation process data, the quality status of the target connection point is determined, where the target connection point is the connection point corresponding to the connection point identifier. If the quality status indicates that the target connection point is abnormal, a notification message is sent. The notification message is used to notify the target connection point in the target body component to be inspected on-site. The target body component is the body component corresponding to the body identification. Wherein, the target connection point includes the connection point corresponding to resistance spot welding, the operation process data includes the weld quality score, and the step of determining the quality status of the target connection point based on the operation process data includes: If no missing welds or incomplete welds are found in the quality status of the target connection point, and if the weld quality score is less than the preset score, and the number of first candidate connection points in the judgment period of the target connection point is greater than the first preset number, the quality status of the target connection point is determined to be an abnormal spot welding process. The judgment period is divided into periods based on a second preset number of vehicle body markings. The first candidate connection point is a connection point with the connection point marking and whose corresponding weld quality score is less than the preset score. If the weld quality score is less than the preset score, and the number of second candidate connection points in the welding process of the welding equipment used by the target connection point on the target vehicle body component is greater than the third preset number, the quality status of the target connection point is determined to be an abnormal spot welding process. The second candidate connection point is a connection point with the vehicle body marking and whose corresponding weld quality score is less than the preset score. Wherein, if the quality status of the target connection point is abnormal during the spot welding process, the quality status indicates that the target connection point is abnormal.

2. The method of claim 1, wherein, When the quality status characterizes the target connection point as abnormal, a notification message is sent, including: If the quality status indicates that the target connection point is abnormal, the notification information is sent to the inspection node corresponding to the connection point identifier.

3. The method according to claim 1, characterized in that, The target connection point is the connection point corresponding to resistance spot welding. The operation process data also includes at least one of the following: weld current value, weld energy value, and spatter status. Determining the quality status of the target connection point based on the operation process data further includes: If the weld point current value is less than the first current value, or if the weld point current value is empty, the quality status of the target connection point is determined to be a spot weld defect. If the energy value of the weld point is less than the first energy value and the welding quality score of the weld point is less than the preset score, the quality status of the target connection point is determined to be a spot weld defect. When the welding equipment used to characterize the spatter state of the target connection point is spattered, the quality state of the target connection point is determined to be spot weld spatter. Wherein, if the quality status of the target connection point is a spot weld leak, a spot weld failure, or a spot weld spatter, the quality status indicates that the target connection point is abnormal.

4. The method according to claim 1, characterized in that, The target connection point is the connection point corresponding to the flow drill screw connection. The operation process data includes at least one of the following: the exposed length value during the pre-loading stage, the maximum final tightening torque value during the tightening stage, the equipment timeout alarm status, the exposed length value of the screw head, and the process result. Determining the quality status of the target connection point based on the operation process data includes: If the exposed length value during the pre-compression stage is less than the first exposed length value, and the process fails, the quality status of the target connection point is determined to be a missing bolt connection. If the maximum final tightening torque value during the tightening stage is less than the preset torque value and the process fails, the quality status of the target connection point is determined to be abnormal torque. If the device timeout alarm status is "alarm present", the quality status of the target connection point is determined to be "abnormal flow drilling screw connection process". If the exposed length of the nail head is less than the second exposed length, the quality status of the target connection point is determined to be that the nail head height is too high. Specifically, if the quality status of the target connection point is characterized by missing bolts, abnormal torque, abnormal flow drilling bolting process, or excessive screw head height, then the quality status indicates that the target connection point is abnormal.

5. The method according to claim 1, characterized in that, The target connection point is the connection point corresponding to the stud weld. The operation process data includes at least one of the following: stud welding data acquisition status, stud welding current value, stud welding energy value, and weld pool depth value. Determining the quality status of the target connection point based on the operation process data includes: If the welding data acquisition status is no data acquisition, or the welding current value of the stud is empty, the quality status of the target connection point is determined to be stud leakage. If the welding current value of the stud is less than the second current value, or the welding energy value of the stud is less than the second energy value, or the molten pool depth value is greater than the first preset depth value, the quality state of the target connection point is determined to be insufficient molten pool. If the welding current value of the stud is greater than the third current value, or the welding energy value of the stud is greater than the third energy value, or the molten pool depth value is less than the second preset depth value, the quality state of the target connection point is determined to be that the molten pool is too large. Wherein, if the quality status of the target connection point is a stud leak, insufficient molten pool, or excessively large molten pool, the quality status indicates that the target connection point is abnormal.

6. The method according to claim 1, characterized in that, The target connection point is the connection point corresponding to self-piercing riveting. The operation process data includes at least one of the following: no-nail alarm signal acquisition status, nail length detection alarm signal acquisition status, plate thickness detection alarm signal acquisition status, rivet type error alarm signal acquisition status, rivet data acquisition status, maximum force exceeding alarm signal acquisition status, riveting curve below error curve acquisition status, riveting curve rising above error curve acquisition status, and riveting curve longer than error curve acquisition status. Determining the quality status of the target connection point based on the operation process data includes: If at least one of the following states—no rivet alarm signal acquisition state, rivet length detection alarm signal acquisition state, plate thickness detection alarm signal acquisition state, rivet model error alarm signal acquisition state, and rivet data acquisition state—indicates that the corresponding signal has been acquired, the quality status of the target connection point is determined to be a missing rivet. If the alarm signal acquisition status exceeds the maximum force and a signal is acquired, the quality status of the target connection point is determined to be head height exceeding tolerance. If at least one of the following conditions indicates that a corresponding signal has been acquired: the riveting curve is lower than the error curve acquisition state, the riveting curve rises above the error curve acquisition state, or the riveting curve is longer than the error curve acquisition state, then the quality state of the target connection point is determined to be an abnormality in the self-piercing riveting process. Wherein, if the quality status of the target connection point is that the rivet is missing, the head height is out of tolerance, or the self-piercing riveting process is abnormal, the quality status indicates that the target connection point is abnormal.

7. A management device for the vehicle body connection process, characterized in that, include: The acquisition module is configured to acquire process record data during the vehicle body connection process, the process record data including vehicle body markings, connection point markings, and operation process data; The determination module is configured to determine the quality status of the target connection point based on the operation process data, wherein the target connection point is the connection point corresponding to the connection point identifier; The sending module is configured to send a notification message when the quality status characterizes the target connection point as abnormal. The notification message is used to notify the target connection point in the target body component to be inspected on-site. The target body component is the body component corresponding to the body identification. The target connection point includes the connection point corresponding to resistance spot welding, the operation process data includes the weld quality score, and the determination module is configured as follows: If no missing welds or incomplete welds are found in the quality status of the target connection point, and if the weld quality score is less than the preset score, and the number of first candidate connection points in the judgment period of the target connection point is greater than the first preset number, the quality status of the target connection point is determined to be an abnormal spot welding process. The judgment period is divided into periods based on a second preset number of vehicle body markings. The first candidate connection point is a connection point with the connection point marking and whose corresponding weld quality score is less than the preset score. If the weld quality score is less than the preset score, and the number of second candidate connection points in the welding process of the welding equipment used by the target connection point on the target vehicle body component is greater than the third preset number, the quality status of the target connection point is determined to be an abnormal spot welding process. The second candidate connection point is a connection point with the vehicle body marking and whose corresponding weld quality score is less than the preset score. Wherein, if the quality status of the target connection point is abnormal during the spot welding process, the quality status indicates that the target connection point is abnormal.

8. A computer-readable storage medium having computer program instructions stored thereon, characterized in that, When executed by a processor, the program instructions implement the steps of the method described in any one of claims 1-6.

9. An electronic device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to execute the executable instructions stored in the memory to implement the steps of the method according to any one of claims 1-6.

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