Construction method and system of 5g industrial terminal real-time quality control strategy

Abstract

The application discloses a 5G industrial terminal real-time quality control strategy construction method and system, relates to the technical field of industrial terminal monitoring, and solves the problems that existing fixed detection stations can only judge single-item qualification and are difficult to find co-directional quantity consumption by continuing to utilize single-item deviation values Dev, quality quantity consumption directions Cdr and quality quantity consumption amounts Amt to judge whether multiple single-item qualified results jointly consume the quality quantity of the same final assembly quality index Aqi, and through co-directional consumption superposition results Sra and combined quality quantity results Qmr, identify the situation that single-item qualification but combined quality quantity is insufficient, and thus generate a real-time quality control strategy Rcs when the combined quality quantity result Qmr does not meet the preset combined quality quantity requirement Req, so as to solve the problem that existing fixed detection stations can only judge single-item qualification and are difficult to find co-directional quantity consumption, and reduce the costs of rework, disassembly, scrapping and batch tracing after assembly.

Description

Technical Field

[0001] This invention relates to the field of industrial terminal monitoring technology, specifically to a method and system for constructing a real-time quality control strategy for 5G industrial terminals. Background Technology

[0002] As industrial production lines develop towards digitalization, networking, and flexibility, 5G industrial terminals have been gradually applied to production processes such as assembly, welding, pressing, sealing, machining, and functional testing. 5G industrial terminals can upload test data generated by different testing stations to edge servers in real time, enabling the results of fixed test items that were originally scattered across various testing stations to be aggregated and analyzed in real time. Therefore, it is no longer limited to judging the pass or fail of a single test item by a single testing station, but is more suitable for using the real-time data relationships of multiple stations and multiple test items to make advance judgments on the overall quality status of the product in subsequent assembly or functional use.

[0003] In existing industrial quality inspection processes, each fixed inspection station typically handles only one fixed inspection item. For example, the hole diameter inspection station checks the hole diameter, the shaft diameter inspection station checks the shaft diameter, the flatness inspection station checks the flatness, and the welding inspection station checks the weld area or resistance. The current inspection logic generally compares the result of each fixed inspection item with its corresponding acceptable range. As long as the result of each fixed inspection item falls within the single acceptable range, the product is considered to be ready for further processing. However, even if multiple fixed inspection items are individually acceptable, their results may still simultaneously deviate from the final assembly quality indicators. For example, a smaller hole diameter, a larger shaft diameter, or a thicker coating will all collectively compress assembly clearances. The existing inspection process lacks a mechanism to jointly judge the contribution direction of deviations from multiple individually acceptable results, making it difficult to promptly detect insufficient combined quality margins behind individual acceptable results. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a method and system for constructing real-time quality control strategies for 5G industrial terminals, thus solving the problems mentioned in the background section.

[0005] This invention is achieved through the following technical solution: a method for constructing a real-time quality control strategy for 5G industrial terminals, comprising the following steps: S1. Collect fixed inspection result set Fdr uploaded by multiple 5G industrial terminals at different fixed inspection stations, and associate the fixed inspection result set Fdr with the same assembly object number Aob. The fixed inspection result set Fdr includes fixed inspection item result Val, fixed inspection item target value Tar, and fixed inspection item qualified range Ran. S2. Determine the fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi based on the preset assembly relationship set Rel. When all fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi meet the corresponding fixed inspection item qualification range Ran, a single qualified result set Spr is formed. S3. Based on the difference between Val, the result of each fixed inspection item in the single qualified result set Spr, and Tar, the corresponding single deviation value Dev is calculated. Based on the preset assembly relationship set Rel, the mass margin consumption direction Cdr and mass margin consumption amount Amt of each single deviation value Dev to the final assembly quality index Aqi are determined, forming the deviation contribution set Con. S4. When multiple mass margin consumption directions Cdr in the deviation contribution set Con point to the same margin consumption side of the same final assembly quality index Aqi, calculate the same-direction consumption superposition result Sra according to the corresponding mass margin consumption Amt, and calculate the combined mass margin result Qmr according to the same-direction consumption superposition result Sra. S5. When the combined mass margin result Qmr does not meet the preset combined mass margin requirement Req, a real-time quality control strategy Rcs is generated according to the control rule set Rul. The real-time quality control strategy Rcs reflects the influence of multiple single qualified fixed inspection item results Val on the same direction of margin consumption of the final assembly quality index Aqi.

[0006] Preferably, step S1 includes: S11. Multiple 5G industrial terminals collect the assembly object number Aob, fixed inspection item identifier Fid, fixed inspection item result Val, fixed inspection item target value Tar, fixed inspection item qualified range Ran, fixed inspection station number Sta, and inspection time Tim generated by their respective fixed inspection stations through the fixed inspection data interface of their fixed inspection stations. S12. The assembly object number Aob, fixed inspection item identifier Fid, fixed inspection item result Val, fixed inspection item target value Tar, fixed inspection item qualified range Ran, fixed inspection station number Sta, and inspection time Tim collected from the same fixed inspection station are encapsulated into a fixed inspection data item Dti, and the fixed inspection data item Dti is transmitted to the industrial edge terminal server through the 5G private network. S13. Group multiple fixed inspection data items Dti with the same assembly object number Aob into the same fixed inspection result set Fdr.

[0007] Preferably, step S2 includes: S21. Read the preset assembly relationship set Rel. The preset assembly relationship set Rel includes the final assembly quality index Aqi, multiple fixed inspection item identifiers Fid that participate in the calculation of the same final assembly quality index Aqi, the fixed inspection item target value Tar corresponding to each fixed inspection item identifier Fid, the fixed inspection item qualified range Ran corresponding to each fixed inspection item identifier Fid, and the contribution relationship Cor corresponding to each fixed inspection item identifier Fid.

[0008] Preferably, step S2 further includes: S22. According to the multiple fixed inspection item identifiers Fid in the preset assembly relationship set Rel, extract all fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi from the fixed inspection result set Fdr corresponding to the same assembly object number Aob. S23. Compare the result Val of each fixed test item with the corresponding qualified range Ran of the fixed test item to obtain the single judgment result Psr corresponding to the result Val of each fixed test item. The single judgment result Psr includes two results: falling into the qualified range Ran of the fixed test item and not falling into the qualified range Ran of the fixed test item. S24. When all fixed inspection item results Val corresponding to the calculation of the same final assembly quality index Aqi are within the qualified range Ran of the fixed inspection item, write all fixed inspection item results Val that are calculated for the same final assembly quality index Aqi into the single qualified result set Spr.

[0009] Preferably, step S3 includes: S31. For each fixed test item result Val in the single qualified result set Spr, perform a numerical comparison with the corresponding fixed test item target value Tar to obtain the target comparison result Cmp. The target comparison result Cmp includes three results: higher than the fixed test item target value Tar, equal to the fixed test item target value Tar, and lower than the fixed test item target value Tar. S32. Calculate the absolute value of the difference between the result Val of each fixed detection item and the target value Tar of the corresponding fixed detection item to obtain the target difference Gap. S33. Write the target comparison result Cmp and the target difference Gap corresponding to the result Val of the same fixed detection item into the single deviation value Dev, so that the single deviation value Dev simultaneously records the high-low comparison relationship and numerical difference between the result Val of the fixed detection item and the target value Tar of the fixed detection item.

[0010] Preferably, step S3 further includes: S34, The contribution relationship Cor includes the corresponding record between the fixed detection item identifier Fid, the target comparison result Cmp, the consumption side identifier Csi, and the consumption coefficient Cef; S35. Match the corresponding record in the contribution relationship Cor that is consistent with the fixed detection item identifier Fid and the target comparison result Cmp corresponding to the single deviation value Dev, and obtain the consumption side identifier Csi and consumption coefficient Cef corresponding to the single deviation value Dev; S36. Define the consumption side identifier Csi as the mass margin consumption direction Cdr, and define the product of the target difference Gap and the consumption coefficient Cef as the mass margin consumption amount Amt. Then write the single deviation value Dev, the mass margin consumption direction Cdr and the mass margin consumption amount Amt into the deviation contribution set Con.

[0011] Preferably, step S4 includes: S41. Group the deviation contribution set Con according to the same final assembly quality index Aqi and the same mass margin consumption direction Cdr to obtain the same-side consumption group Srg. S42. Calculate the quantity and cumulative value of the mass margin consumption Amt in each same-side consumption group Srg; S43. When the number of mass margin consumption Amt in the same same-side consumption group Srg is not less than two, the cumulative value of all mass margin consumption Amt in the same same-side consumption group Srg is defined as the same-direction consumption superposition result Sra.

[0012] Preferably, step S4 further includes: S44. Read the allowable mass margin Lim corresponding to the final assembly quality index Aqi from the preset assembly relationship set Rel; S45. Subtract the corresponding same-direction consumption superposition result Sra from the allowable mass margin Lim to obtain the combined mass margin result Qmr. The combined mass margin result Qmr is used to record the remaining acceptable margin of the final assembly quality index Aqi after multiple individually qualified fixed inspection item results Val are superimposed on the same mass margin consumption direction Cdr.

[0013] Preferably, step S5 includes: S51. Compare the combined mass margin result Qmr with the preset combined mass margin requirement Req to obtain the margin determination result Jdg. The margin determination result Jdg includes two results: satisfying the preset combined mass margin requirement Req and not satisfying the preset combined mass margin requirement Req. S52. When the margin determination result Jdg does not meet the preset combined quality margin requirement Req, read the control rule record that is consistent with the final assembly quality index Aqi and the quality margin consumption direction Cdr from the control rule set Rul, and determine the strategy type field Sty, the execution object field Obj, the trigger condition field Trg and the verification station field Vst according to the control rule record. S53. Generate the real-time quality control strategy Rcs based on the strategy type field Sty, the execution object field Obj, the trigger condition field Trg, and the verification station field Vst. The strategy type field Sty is used to record the strategy types that are hit by the control rule set Rul in the following categories: prohibition of same-direction deviation pairing, priority pairing of reverse deviation, re-inspection, isolation, stricter subsequent functional testing, and flow restriction.

[0014] The system for constructing real-time quality control strategies for 5G industrial terminals includes a terminal data acquisition module, a single-item detection module, a deviation accumulation module, a margin analysis module, and a quality control decision module. The terminal data acquisition module collects fixed inspection result sets Fdr uploaded by multiple 5G industrial terminals at different fixed inspection stations, and associates the fixed inspection result sets Fdr based on the same assembly object number Aob. The fixed inspection result set Fdr includes the fixed inspection item result Val, the fixed inspection item target value Tar, and the fixed inspection item qualified range Ran. The single-item inspection module determines the fixed inspection item result Val that participates in the calculation of the same final assembly quality index Aqi according to the preset assembly relationship set Rel. When all the fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi meet the corresponding fixed inspection item qualification range Ran, a single-item qualification result set Spr is formed. The deviation accumulation module calculates the corresponding single-item deviation value Dev based on the difference between the result Val of each fixed inspection item in the single-item qualified result set Spr and the corresponding fixed inspection item target value Tar. It also determines the direction of mass margin consumption Cdr and the amount of mass margin consumption Amt of each single-item deviation value Dev to the final assembly quality index Aqi based on the preset assembly relationship set Rel, forming a deviation contribution set Con. When multiple mass margin consumption directions Cdr in the deviation contribution set Con point to the same margin consumption side of the same final assembly quality index Aqi, the margin analysis module calculates the same-direction consumption superposition result Sra based on the corresponding mass margin consumption Amt, and calculates the combined mass margin result Qmr based on the same-direction consumption superposition result Sra. When the combined quality margin result Qmr does not meet the preset combined quality margin requirement Req, the quality control decision module generates a real-time quality control strategy Rcs based on the control rule set Rul. The real-time quality control strategy Rcs reflects the influence of multiple individually qualified fixed inspection item results Val on the same direction of margin consumption of the final assembly quality index Aqi.

[0015] This invention provides a method and system for constructing a real-time quality control strategy for 5G industrial terminals, which has the following beneficial effects: (1) When the results Val of multiple fixed inspection items all meet the corresponding fixed inspection item qualification range Ran, continue to use the single deviation value Dev, the mass margin consumption direction Cdr and the mass margin consumption amount Amt to determine whether multiple single qualified results jointly consume the mass margin of the same final assembly quality index Aqi. And identify the situation where the single item is qualified but the combined mass margin is insufficient by using the same direction consumption superposition result Sra and the combined mass margin result Qmr. Thus, when the combined mass margin result Qmr does not meet the preset combined mass margin requirement Req, a real-time quality control strategy Rcs is generated to reduce the problems of abnormal assembly gap, excessive fit or subsequent rework caused by releasing only single qualified items.

[0016] (2) By forming the target comparison result Cmp and the target difference Gap respectively by the relationship and difference between the fixed test item result Val and the target value Tar of the fixed test item, and then determining the corresponding mass margin consumption direction Cdr and mass margin consumption amount Amt according to the contribution relationship Cor, the results of different test items that are too high or too low can be converted into the impact of the margin consumption on the same final assembly quality index Aqi, avoiding the need to make experience judgments based solely on the high or low of a single result.

[0017] (3) By classifying the same final assembly quality index Aqi and the same quality margin consumption direction Cdr corresponding to the quality margin consumption Amt into the same side consumption group Srg, and calculating the same direction consumption superposition result Sra and the combined quality margin result Qmr, the superposition effect of multiple single qualified deviations is transformed into comparable remaining margins; when the margin judgment result Jdg does not meet the preset combined quality margin requirement Req, a real-time quality control strategy Rcs containing the strategy type field Sty, the execution object field Obj, the trigger condition field Trg and the verification station field Vst is generated according to the control rule set Rul, so that the control object, trigger condition and verification position are more clearly defined. Attached Figure Description

[0018] Figure 1 A schematic diagram illustrating the overall process of constructing a real-time quality control strategy for 5G industrial terminals; Figure 2 This is a schematic diagram of the data processing flow from step S1 to step S3; Figure 3 The flowchart for residual judgment and strategy generation in steps S4 to S5 is as follows: Figure 4 A schematic diagram of the system module process for constructing a real-time quality control strategy for 5G industrial terminals. Detailed Implementation

[0019] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0020] Example 1 This invention provides a method for constructing a real-time quality control strategy for 5G industrial terminals. Please refer to [link / reference]. Figures 1 to 3 This includes the following steps: S1. Collect fixed inspection result set Fdr uploaded by multiple 5G industrial terminals at different fixed inspection stations, and associate the fixed inspection result set Fdr with the same assembly object number Aob. The fixed inspection result set Fdr includes fixed inspection item result Val, fixed inspection item target value Tar, and fixed inspection item qualified range Ran. S2. Determine the fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi based on the preset assembly relationship set Rel. When all fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi meet the corresponding fixed inspection item qualification range Ran, a single qualified result set Spr is formed. S3. Based on the difference between Val, the result of each fixed inspection item in the single qualified result set Spr, and Tar, the corresponding single deviation value Dev is calculated. Based on the preset assembly relationship set Rel, the mass margin consumption direction Cdr and mass margin consumption amount Amt of each single deviation value Dev to the final assembly quality index Aqi are determined, forming the deviation contribution set Con. S4. When multiple mass margin consumption directions Cdr in the deviation contribution set Con point to the same margin consumption side of the same final assembly quality index Aqi, calculate the same-direction consumption superposition result Sra according to the corresponding mass margin consumption Amt, and calculate the combined mass margin result Qmr according to the same-direction consumption superposition result Sra. S5. When the combined mass margin result Qmr does not meet the preset combined mass margin requirement Req, a real-time quality control strategy Rcs is generated according to the control rule set Rul. The real-time quality control strategy Rcs reflects the influence of multiple single qualified fixed inspection item results Val on the same direction of margin consumption of the final assembly quality index Aqi.

[0021] In this embodiment, through the above steps, the method for constructing a real-time quality control strategy for 5G industrial terminals can, when multiple fixed inspection item results Val all meet the corresponding fixed inspection item qualification range Ran, further utilize the single-item deviation value Dev, the quality margin consumption direction Cdr, and the quality margin consumption amount Amt to determine whether multiple single-item qualified results are consuming the quality margin of the final assembly quality index Aqi on the same side. Furthermore, by using the same-direction consumption superposition result Sra and the combined quality margin result Qmr, it can identify in advance hidden problems where individual items are qualified but the combined assembly risk has already formed. For example, in shaft assembly, the hole diameter inspection is qualified but too small, or the shaft diameter inspection is qualified... However, when the coating thickness is too large or the coating thickness is qualified but too thick, the three test results can be approved individually, but their combined effect will compress the assembly gap and cause the assembly to be too tight, resulting in increased heat generation or vibration during operation. This method can generate a real-time quality control strategy Rcs based on the control rule set Rul when the combined mass margin result Qmr does not meet the preset combined mass margin requirement Req. This allows the product to be arranged for reverse deviation pairing, re-inspection, isolation, stricter subsequent functional testing, or flow restriction before entering the final assembly. This solves the problem that the existing fixed inspection station can only judge the single item as qualified and it is difficult to detect the consumption of the same direction margin. It also reduces the cost of rework, disassembly, scrapping, and batch traceability after assembly.

[0022] Example 2 Please see Figure 2 Specifically, step S1 includes: S11. Multiple 5G industrial terminals collect the assembly object number Aob, fixed inspection item identifier Fid, fixed inspection item result Val, fixed inspection item target value Tar, fixed inspection item qualified range Ran, fixed inspection station number Sta, and inspection time Tim generated by their respective fixed inspection stations through the fixed inspection data interface of their fixed inspection stations. Specifically: The fixed inspection data interface is the data reading interface opened by the inspection equipment, PLC, industrial camera, barcode scanner, RFID reader, or inspection software in the fixed inspection station to the 5G industrial terminal. After the 5G industrial terminal generates an inspection completion signal at the fixed inspection station, it reads the inspection data. Among them, the assembly object number Aob is generated by the product code read by the barcode scanner, the pallet code read by the RFID reader, the work order product code issued by the MES, or the assembly fixture binding code; the fixed inspection item identifier Fid is generated by the inspection item configuration table of the fixed inspection station; the fixed inspection item result Val is generated by the actual inspection value output by the fixed inspection equipment; the fixed inspection item target value Tar is generated by the nominal value of the product drawing, the center value of the process document, or the target value of the control plan; the fixed inspection item qualified range Ran is generated by the tolerance of the product drawing, the allowable range of the process document, or the upper and lower limits of the process control approved by the process verification; the fixed inspection station number Sta is generated by the production line station configuration table; and the inspection time Tim is generated by the system time when the fixed inspection station completes the inspection.

[0023] Specifically: The target value Tar for fixed inspection items is configured before production according to the product model and the fixed inspection item identifier Fid. When the fixed inspection item is hole diameter inspection, the target value Tar adopts the nominal design value of the hole diameter. When the fixed inspection item is shaft diameter inspection, the target value Tar adopts the nominal design value of the shaft diameter. When the fixed inspection item is coating thickness inspection, the target value Tar adopts the center value of the coating thickness set in the process document. The acceptable range Ran for fixed inspection items is recorded in the form of a lower limit and an upper limit. When the product drawing gives the upper and lower deviations, the target value Tar is added to the lower and upper deviations to obtain the lower limit, and the target value Tar is added to the upper deviation to obtain the upper limit. When the process document directly gives the allowable range, the minimum value of the allowable range is used as the lower limit, and the maximum value of the allowable range is used as the upper limit.

[0024] Specifically: After the 5G industrial terminal reads the assembly object number Aob, it performs format verification on the assembly object number Aob. The format verification includes number length verification, character type verification, and verification bit verification. Only the assembly object number Aob that passes the format verification is encapsulated together with the fixed inspection item result Val. After reading the fixed inspection item result Val, the unit is uniformly processed so that the fixed inspection item result Val, the fixed inspection item target value Tar, and the fixed inspection item qualified range Ran use the same unit of measurement, such as millimeters, micrometers, Newtons, or milliohms, to avoid judgment errors caused by inconsistent units during subsequent comparisons.

[0025] S12. The assembly object number Aob, fixed inspection item identifier Fid, fixed inspection item result Val, fixed inspection item target value Tar, fixed inspection item qualified range Ran, fixed inspection station number Sta, and inspection time Tim collected from the same fixed inspection station are encapsulated into a fixed inspection data item Dti, and the fixed inspection data item Dti is transmitted to the industrial edge terminal server through the 5G private network. Specifically: Fixed inspection data item Dti is generated in such a way that one fixed inspection item result Val corresponds to one fixed inspection data item Dti. The fixed inspection data item Dti simultaneously stores the assembly object number Aob, the fixed inspection item identifier Fid, the fixed inspection item result Val, the fixed inspection item target value Tar, the fixed inspection item acceptable range Ran, the fixed inspection station number Sta, and the inspection time Tim. This enables subsequent processing to determine which assembly object the fixed inspection item result Val belongs to, which fixed inspection station it comes from, which fixed inspection item it corresponds to, and which single-item acceptable judgment range to use.

[0026] Specifically: During encapsulation, the fixed inspection data item Dti is written in a fixed field order, which is: assembly object number Aob, fixed inspection item identifier Fid, fixed inspection item result Val, fixed inspection item target value Tar, fixed inspection item acceptable range Ran, fixed inspection station number Sta, and inspection time Tim. After encapsulation, a data integrity verification value is generated. When the 5G industrial terminal transmits the fixed inspection data item Dti through the 5G private network, it also transmits the data integrity verification value. After receiving the data integrity verification value, the industrial edge terminal server recalculates the data integrity verification value and compares the recalculated data integrity verification value with the received data integrity verification value. If the two are consistent, it is determined that the fixed inspection data item Dti has not been damaged during transmission. If the two are inconsistent, the corresponding 5G industrial terminal is requested to resend the fixed inspection data item Dti.

[0027] Specifically: When transmitting fixed inspection data item Dti through the 5G private network, the assembly object number Aob and the fixed inspection station number Sta are used as the transmission record index. After receiving the fixed inspection data item Dti, the industrial edge terminal server records the reception status according to the transmission record index. The reception status includes received, verified, and verified, so that the implementers can confirm whether the fixed inspection data item Dti of each fixed inspection station has entered the subsequent processing flow based on the reception status.

[0028] S13. Group multiple fixed inspection data items Dti with the same assembly object number Aob into the same fixed inspection result set Fdr.

[0029] Specifically: After receiving multiple fixed detection data items Dti, the industrial edge terminal server reads the assembly object number Aob from each fixed detection data item Dti and performs standardization processing on the assembly object number Aob. The standardization processing includes removing leading and trailing spaces from the assembly object number Aob, unifying the case, unifying the code prefix, and checking the length of the check number. After standardization processing, the standardized assembly object number Aob is obtained. Only multiple fixed detection data items Dti with identical standardized assembly object numbers Aob are included in the same fixed detection result set Fdr.

[0030] Specifically: Character-by-character consistency means that the two standardized assembly object numbers Aob are identical in the number of characters, the order of characters, and the content of each character. For example, when the standardized assembly object numbers Aob are both A202501150086, the two fixed inspection data items Dti are assigned to the same fixed inspection result set Fdr. When the standardized assembly object numbers Aob differ in any character, the number of characters, or the check digit, the two fixed inspection data items Dti are not assigned to the same fixed inspection result set Fdr, and the corresponding fixed inspection data item Dti is written to the data queue to be verified.

[0031] Specifically: After the fixed inspection result set Fdr is formed, the assembly object number Aob is used as the set index, and the fixed inspection item identifier Fid is used as the data index within the set, so that a fixed inspection result set Fdr can store multiple fixed inspection item results Val generated by the same assembly object at multiple fixed inspection stations; when multiple fixed inspection data items Dti with the same fixed inspection item identifier Fid appear in the same fixed inspection result set Fdr, the latest fixed inspection data item Dti is selected according to the inspection time Tim to participate in the subsequent steps, and the earlier fixed inspection data item Dti is retained as a historical inspection record.

[0032] Step S2 includes: S21. Read the preset assembly relationship set Rel. The preset assembly relationship set Rel includes the final assembly quality index Aqi, multiple fixed inspection item identifiers Fid that participate in the calculation of the same final assembly quality index Aqi, the fixed inspection item target value Tar corresponding to each fixed inspection item identifier Fid, the fixed inspection item qualified range Ran corresponding to each fixed inspection item identifier Fid, and the contribution relationship Cor corresponding to each fixed inspection item identifier Fid.

[0033] Specifically: The preset assembly relationship set Rel is a data set established before production based on the product assembly structure, product drawings, process documents, dimensional chain analysis documents, sealing design documents, electrical connection design documents, or process verification records. The final assembly quality index Aqi is used to represent the quality indicators that need to be met after assembly, such as assembly gap, sealing compression, coaxiality, electrical connection reliability, hot pressing strength, or pressing thickness stability. Multiple fixed inspection item identifiers Fid are used to represent the fixed inspection items that jointly affect the final assembly quality index Aqi.

[0034] Specifically: The preset assembly relationship set Rel is established using the final assembly quality index Aqi as an index. Each final assembly quality index Aqi corresponds to at least two fixed inspection item identifiers Fid. For example, when the final assembly quality index Aqi is the assembly gap, the fixed inspection item identifiers Fid participating in the calculation of the same final assembly quality index Aqi may include the hole diameter inspection item, shaft diameter inspection item, and coating thickness inspection item. When the final assembly quality index Aqi is the sealing compression amount, the fixed inspection item identifiers Fid participating in the calculation of the same final assembly quality index Aqi may include the sealant height inspection item, sealing surface flatness inspection item, and pressing height inspection item.

[0035] Specifically: The target value Tar and acceptable range Ran for each fixed inspection item, identified by Fid, are read from product drawings, process documents, or control plans. When both the product drawings and process documents record the target value Tar and the acceptable range Ran, the process document corresponding to the current production batch takes precedence. When the process document does not record the acceptable range Ran, the tolerance range of the product drawings takes precedence. When the tolerance range of the product drawings is inconsistent with the upper and lower limits of the process control in the control plan, the narrower value is used as the acceptable range Ran.

[0036] Specifically, the contribution relationship Cor is used to record the influence relationship between the fixed inspection item identifier Fid and the final assembly quality index Aqi. The contribution relationship Cor includes the consumption side when the fixed inspection item result Val is higher than the fixed inspection item target value Tar, the consumption side when the fixed inspection item result Val is lower than the fixed inspection item target value Tar, and the consumption coefficient. For example, for assembly clearance, the clearance reduction side is when the hole diameter is lower than the fixed inspection item target value Tar, the clearance reduction side is when the shaft diameter is higher than the fixed inspection item target value Tar, and the clearance reduction side is when the coating thickness is higher than the fixed inspection item target value Tar. This setting allows subsequent steps to identify that although the Val results of different fixed inspection items are in different directions, they may all consume the same margin of the final assembly quality index Aqi.

[0037] Step S2 further includes: S22. According to the multiple fixed inspection item identifiers Fid in the preset assembly relationship set Rel, extract all fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi from the fixed inspection result set Fdr corresponding to the same assembly object number Aob. Specifically: After determining the final assembly quality index Aqi to be calculated, based on the multiple fixed inspection item identifiers Fid in the preset assembly relationship set Rel that correspond to the final assembly quality index Aqi, the fixed inspection data item Dti with the same fixed inspection item identifier Fid is searched item by item from the fixed inspection result set Fdr corresponding to the same assembly object number Aob, and the fixed inspection result Val is extracted from the found fixed inspection data item Dti.

[0038] Specifically: The consistency of the fixed inspection item identifier Fid is determined by identifier matching, which includes consistency in character length, character content, and item version number of the fixed inspection item identifier Fid. When any fixed inspection item identifier Fid required by the preset assembly relationship set Rel is missing from the fixed inspection result set Fdr, the subsequent single qualified result set Spr is not formed, and a missing item prompt is output. The missing item prompt is used to indicate which fixed inspection item identifier Fid is missing and the corresponding fixed inspection item result Val.

[0039] Specifically: When extracting all fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi, the fixed inspection item results Val must come from the fixed inspection result set Fdr corresponding to the same assembly object number Aob. Fixed inspection item results Val cannot be supplemented from the fixed inspection result set Fdr corresponding to other assembly object numbers Aob, so that the fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi all belong to the same product, the same part combination, or the same object to be assembled.

[0040] S23. Compare the result Val of each fixed test item with the corresponding qualified range Ran of the fixed test item to obtain the single judgment result Psr corresponding to the result Val of each fixed test item. The single judgment result Psr includes two results: falling into the qualified range Ran of the fixed test item and not falling into the qualified range Ran of the fixed test item. Specifically: For each fixed test item result Val, the corresponding fixed test item acceptable range Ran is read. The fixed test item acceptable range Ran includes a lower limit and an upper limit. The fixed test item result Val is compared with the lower limit and the upper limit respectively. When the fixed test item result Val is greater than or equal to the lower limit and less than or equal to the upper limit, the single-item judgment result Psr that falls within the fixed test item acceptable range Ran is obtained. When the fixed test item result Val is less than the lower limit or greater than the upper limit, the single-item judgment result Psr that does not fall within the fixed test item acceptable range Ran is obtained.

[0041] Specifically: Before comparing the fixed test item result Val with the fixed test item acceptable range Ran, first confirm that the fixed test item result Val, the fixed test item target value Tar, and the fixed test item acceptable range Ran use the same unit of measurement. When the units of measurement are different and there is a preset unit conversion relationship, first convert the fixed test item result Val to the unit of measurement corresponding to the fixed test item acceptable range Ran according to the preset unit conversion relationship, and then compare them. When the units of measurement are different and there is no preset unit conversion relationship, stop the single-item judgment of the corresponding fixed test item result Val and output a unit abnormality prompt.

[0042] Specifically: When the fixed test item result Val is the result of multiple samplings, a fixed test item result Val for single-item judgment is first obtained according to the preset result generation rules in the fixed test item configuration table. The result generation rules include taking the average value, taking the maximum value, taking the minimum value, or taking the average value of the stable segment. For example, the average value of multiple measurements can be used as the fixed test item result Val for aperture detection, the maximum deviation value can be used as the fixed test item result Val for sealing surface flatness detection, and the average value of the stable segment can be used as the fixed test item result Val for resistance detection.

[0043] S24. When all fixed inspection item results Val corresponding to the calculation of the same final assembly quality index Aqi are within the qualified range Ran of the fixed inspection item, write all fixed inspection item results Val that are calculated for the same final assembly quality index Aqi into the single qualified result set Spr.

[0044] Specifically: The single-item qualified result set Spr is generated only when all fixed inspection item results Val involved in the calculation of the same final assembly quality index Aqi correspond to single-item judgment results Psr that fall within the fixed inspection item qualified range Ran. When any fixed inspection item result Val corresponds to a single-item judgment result Psr that does not fall within the fixed inspection item qualified range Ran, the corresponding assembly object number Aob is not entered into the combination margin judgment process after single-item qualification. Instead, a single-item non-qualification prompt is output, so that the single-item qualified result set Spr is specifically used to handle the situation where all fixed inspection item results Val are single-item qualified but still require further judgment of combination quality margin.

[0045] Specifically: The single-item qualified result set Spr retains the fixed inspection item identifier Fid, the fixed inspection item target value Tar, the fixed inspection item qualified range Ran, and the inspection time Tim corresponding to each fixed inspection item result Val, so that subsequent steps can continue to calculate the deviation of each fixed inspection item result Val from the fixed inspection item target value Tar; for example, after the hole diameter inspection, shaft diameter inspection, and coating thickness inspection all fall within their respective fixed inspection item qualified range Ran, the three fixed inspection item results Val are jointly written into the single-item qualified result set Spr, and subsequent steps then determine whether the hole diameter being too small, the shaft diameter being too large, and the coating thickness being too thick collectively consume the assembly clearance allowance.

[0046] In this embodiment, the above steps can unify the detection data scattered across different fixed inspection stations into a fixed detection data item Dti, and then aggregate them into the same fixed inspection result set Fdr using the same assembly object number Aob. This ensures that subsequent judgments no longer rely on isolated detection results from a single station, but are based on the complete detection data of the same assembly object. Simultaneously, by pre-setting the assembly relationship set Rel, it is clarified which fixed inspection item identifiers Fid participate in the calculation of the same final assembly quality index Aqi. Furthermore, by using the single-item judgment result Psr to first screen out all fixed inspection item results Val that fall within the acceptable range Ran of the fixed inspection items, it is possible to avoid confiscating products that are already unqualified in a single item. The process for judging the combined allowance after a single item passes inspection is improved. For example, in the shaft assembly scenario, after the hole diameter inspection station, shaft diameter inspection station, and coating thickness inspection station upload their respective fixed inspection data items Dti via a 5G private network, the system can first confirm whether these data belong to the same assembly object number Aob, and then confirm whether the fixed inspection item results Val corresponding to the hole diameter, shaft diameter, and coating thickness all fall within the acceptance range Ran of their respective fixed inspection items. This provides an accurate, complete, and consistent data basis for subsequent identification of situations where a single item passes inspection but collectively consumes assembly clearance allowance, reducing the false triggering of quality control strategies due to data mismatch, assembly object confusion, or the mixing of single non-conforming data.

[0047] Example 3 Please see Figure 2 Specifically, step S3 includes: S31. For each fixed test item result Val in the single qualified result set Spr, perform a numerical comparison with the corresponding fixed test item target value Tar to obtain the target comparison result Cmp. The target comparison result Cmp includes three results: higher than the fixed test item target value Tar, equal to the fixed test item target value Tar, and lower than the fixed test item target value Tar. Specifically: When processing each fixed test item result Val in the single qualified result set Spr, first read the fixed test item target value Tar corresponding to the same fixed test item identifier Fid, and confirm that the fixed test item result Val and the fixed test item target value Tar use the same unit of measurement. When the fixed test item result Val is greater than the fixed test item target value Tar, record the target comparison result Cmp as higher than the fixed test item target value Tar. When the fixed test item result Val is less than the fixed test item target value Tar, record the target comparison result Cmp as lower than the fixed test item target value Tar. When the difference between the fixed test item result Val and the fixed test item target value Tar falls within the preset comparison tolerance, record the target comparison result Cmp as equal to the fixed test item target value Tar.

[0048] Specifically: The preset comparison tolerance is determined based on the resolution of the detection equipment at the corresponding fixed detection station, the repeatability error, or the numerical judgment accuracy allowed by the process document. For example, when the resolution of the aperture detection equipment is 0.001mm, the preset comparison tolerance can be set to 0.001mm or the judgment accuracy specified by the process document. When the absolute value of the difference between the fixed detection item result Val and the fixed detection item target value Tar is not greater than the preset comparison tolerance, the target comparison result Cmp is recorded as equal to the fixed detection item target value Tar. When the absolute value of the difference between the fixed detection item result Val and the fixed detection item target value Tar is greater than the preset comparison tolerance, the target comparison result Cmp is determined based on whether the fixed detection item result Val is greater than or less than the fixed detection item target value Tar.

[0049] Specifically: The target comparison result Cmp is not used to determine whether the fixed inspection item result Val is qualified. Instead, based on the fixed inspection item result Val already falling within the qualified range Ran of the fixed inspection item, it further records whether the fixed inspection item result Val is above, below, or near the target value relative to the target value Tar of the fixed inspection item. This allows subsequent steps to determine the direction of the allowance influence of the qualified fixed inspection item result Val on the final assembly quality index Aqi. For example, when the fixed inspection item result Val corresponding to the hole diameter inspection is lower than the target value Tar of the fixed inspection item, the target comparison result Cmp is recorded as lower than the target value Tar of the fixed inspection item. When the fixed inspection item result Val corresponding to the shaft diameter inspection is higher than the target value Tar of the fixed inspection item, the target comparison result Cmp is recorded as higher than the target value Tar of the fixed inspection item.

[0050] S32. Calculate the absolute value of the difference between the result Val of each fixed detection item and the target value Tar of the corresponding fixed detection item to obtain the target difference Gap. Specifically, the target difference Gap is obtained by the absolute value of the difference between the fixed test item result Val and the corresponding fixed test item target value Tar. The target difference Gap is a non-negative number and is used to record the actual numerical distance between the fixed test item result Val and the fixed test item target value Tar. For example, when the fixed test item target value Tar is 10.000mm and the fixed test item result Val is 9.980mm, the target difference Gap is 0.020mm. When the fixed test item result Val is 10.015mm, the target difference Gap is 0.015mm.

[0051] Specifically: Before calculating the target difference Gap, first confirm that the fixed detection item result Val and the fixed detection item target value Tar correspond to the same detection item according to the fixed detection item identifier Fid, and perform numerical calculations according to the same unit of measurement. When the fixed detection item result Val is used in the target difference Gap calculation after unit conversion, the target difference Gap is saved using the converted unit of measurement. When the fixed detection item result Val is the result of multiple samplings, the target difference Gap is calculated based on the fixed detection item result Val used for single-item judgment determined in step S23.

[0052] Specifically: The target difference Gap only records the magnitude of the deviation of the fixed inspection item result Val from the fixed inspection item target value Tar. It does not separately indicate the direction of deviation. The direction of deviation is recorded by the target comparison result Cmp. The target difference Gap and the target comparison result Cmp together form the data basis for the subsequent single deviation value Dev. This avoids confusion caused by the different directions of influence of different fixed inspection items on the final assembly quality index Aqi when only positive and negative differences are used.

[0053] S33. Write the target comparison result Cmp and the target difference Gap corresponding to the result Val of the same fixed detection item into the single deviation value Dev, so that the single deviation value Dev simultaneously records the high-low comparison relationship and numerical difference between the result Val of the fixed detection item and the target value Tar of the fixed detection item.

[0054] Specifically: The individual deviation value Dev is generated one by one according to the fixed detection item result Val. Each individual deviation value Dev includes at least the fixed detection item identifier Fid, the fixed detection item result Val, the fixed detection item target value Tar, the target comparison result Cmp, and the target difference value Gap. This allows an individual deviation value Dev to simultaneously indicate which fixed detection item the fixed detection item result Val belongs to, whether it is higher than, equal to, or lower than the fixed detection item target value Tar, and how much it differs from the fixed detection item target value Tar.

[0055] Specifically: The individual deviation value Dev is used for subsequent matching of the contribution relationship Cor. Therefore, the fixed detection item identifier Fid and the target comparison result Cmp in the individual deviation value Dev must maintain the same recording format as the fixed detection item identifier Fid and the target comparison result Cmp in the contribution relationship Cor. For example, if the contribution relationship Cor records the gap reduction side when the aperture detection item is lower than the fixed detection item target value Tar, then when the target comparison result Cmp of the aperture detection item in the individual deviation value Dev is lower than the fixed detection item target value Tar, it can be directly matched with the corresponding record in the contribution relationship Cor.

[0056] Specifically: When the target comparison result Cmp is equal to the fixed inspection item target value Tar, the target difference value Gap is recorded as zero or as a value not greater than the preset comparison tolerance. In the subsequent calculation of the mass margin consumption Amt, a zero value or a consumption value close to zero is obtained, so that the fixed inspection item result Val located near the target value will not be incorrectly identified as consuming the mass margin of the final assembly quality index Aqi.

[0057] Step S3 further includes: S34, The contribution relationship Cor includes the corresponding record between the fixed detection item identifier Fid, the target comparison result Cmp, the consumption side identifier Csi, and the consumption coefficient Cef; Specifically: The contribution relationship Cor is established before production based on the assembly structure, dimensional chain analysis, sealing compression relationship, electrical connection relationship, product drawings or process verification results. The contribution relationship Cor is used to explain which side of the mass margin of the final assembly quality index Aqi will be consumed when the target comparison result Cmp is higher than, equal to or lower than the target value Tar of the fixed inspection item. The corresponding margin consumption side is recorded by the consumption side identifier Csi.

[0058] Specifically: The consumption side identifier Csi is recorded using an understandable name corresponding to the final assembly quality index Aqi. When the final assembly quality index Aqi is the assembly gap, the consumption side identifier Csi can be recorded as the gap reduction side or the gap increase side. When the final assembly quality index Aqi is the sealing compression amount, the consumption side identifier Csi can be recorded as the insufficient compression amount side or the excessive compression amount side. When the final assembly quality index Aqi is the coaxiality, the consumption side identifier Csi can be recorded as the coaxial deviation increase side.

[0059] Specifically, the consumption factor Cef is used to represent the proportion of the impact of the target difference Gap on the final assembly quality index Aqi. The consumption factor Cef is determined based on the assembly dimension chain coefficient, transmission ratio, process verification calibration value, or product design documents. When the fixed inspection item result Val has a proportional impact on the final assembly quality index Aqi, the consumption factor Cef is set to 1. When the fixed inspection item result Val indirectly affects the final assembly quality index Aqi through geometric or process relationships, the consumption factor Cef is set to the corresponding impact ratio. For example, when an increase in coating thickness of 0.010 mm will reduce the assembly gap by 0.010 mm, the consumption factor Cef is set to 1. When a change in the height of a certain inclined plane of 0.010 mm will change the radial clearance by 0.005 mm, the consumption factor Cef is set to 0.5.

[0060] Specifically, the contribution relationship Cor is recorded using the fixed inspection item identifier Fid and the target comparison result Cmp as matching conditions. For example, the contribution relationship Cor corresponding to the assembly gap can record the gap reduction side when the hole diameter inspection item is lower than the fixed inspection item target value Tar, the gap reduction side when the shaft diameter inspection item is higher than the fixed inspection item target value Tar, and the gap reduction side when the coating thickness inspection item is higher than the fixed inspection item target value Tar. This ensures that even if the target comparison result Cmp is different, the results Val of different fixed inspection items can be identified as consuming the same side of the same final assembly quality index Aqi.

[0061] S35. Match the corresponding record in the contribution relationship Cor that is consistent with the fixed detection item identifier Fid and the target comparison result Cmp corresponding to the single deviation value Dev, and obtain the consumption side identifier Csi and consumption coefficient Cef corresponding to the single deviation value Dev; Specifically: When matching each individual deviation value Dev, first read the fixed detection item identifier Fid and the target comparison result Cmp in the individual deviation value Dev, then search for the corresponding record with the same fixed detection item identifier Fid and the same target comparison result Cmp in the contribution relationship Cor. If a unique corresponding record is found, read the consumption side identifier Csi and consumption coefficient Cef in the corresponding record as the residual influence information corresponding to the individual deviation value Dev.

[0062] Specifically: the consistency of the fixed detection item identifier Fid is determined by matching the characters and the item version. The consistency of the target comparison result Cmp is determined by matching the result enumeration. The result enumeration includes values ​​higher than the fixed detection item target value Tar, equal to the fixed detection item target value Tar, and lower than the fixed detection item target value Tar. Only when the fixed detection item identifier Fid and the target comparison result Cmp are both consistent are the corresponding record in the contribution relationship Cor considered to match the single deviation value Dev.

[0063] Specifically: When no corresponding record is found in the contribution relationship Cor that matches the fixed inspection item identifier Fid and the target comparison result Cmp for the single deviation value Dev, the single deviation value Dev is written to the relationship missing queue, and the single deviation value Dev is stopped from entering the deviation contribution set Con. The relationship missing queue is used to indicate that the contribution relationship Cor between the fixed inspection item identifier Fid and the target comparison result Cmp to the final assembly quality index Aqi needs to be supplemented. When multiple corresponding records are found in the contribution relationship Cor, the corresponding record with the same matching version is selected according to the current product model, the current process version, or the current assembly structure version.

[0064] S36. Define the consumption side identifier Csi as the mass margin consumption direction Cdr, and define the product of the target difference Gap and the consumption coefficient Cef as the mass margin consumption amount Amt. Then write the single deviation value Dev, the mass margin consumption direction Cdr and the mass margin consumption amount Amt into the deviation contribution set Con.

[0065] Specifically: the mass margin consumption direction Cdr is directly determined by the consumption side identifier Csi. The mass margin consumption direction Cdr is used to record the specific margin consumption side of the individual deviation value Dev relative to the final assembly quality index Aqi. The mass margin consumption amount Amt is obtained by multiplying the target difference value Gap by the consumption coefficient Cef. The mass margin consumption amount Amt is used to record the magnitude of the individual deviation value Dev consumed in the mass margin consumption direction Cdr.

[0066] Specifically: when the target difference Gap is 0.020mm and the consumption coefficient Cef is 1, the mass margin consumption Amt is 0.020mm; when the target difference Gap is 0.020mm and the consumption coefficient Cef is 0.5, the mass margin consumption Amt is 0.010mm. This calculation can uniformly convert the deviation of different fixed inspection item results Val relative to the fixed inspection item target value Tar into the margin consumption for the same final assembly quality index Aqi.

[0067] Specifically: The deviation contribution set Con stores multiple deviation contribution records according to the final assembly quality index Aqi. Each deviation contribution record includes at least the fixed inspection item identifier Fid, the single deviation value Dev, the mass margin consumption direction Cdr, and the mass margin consumption amount Amt. This allows subsequent steps to group the deviation contribution set Con according to the same final assembly quality index Aqi and the same mass margin consumption direction Cdr, and calculate the same-direction consumption superposition result Sra. For example, the mass margin consumption direction Cdr formed when the hole diameter is lower than the fixed inspection item target value Tar is the clearance reduction side, and the mass margin consumption direction Cdr formed when the shaft diameter is higher than the fixed inspection item target value Tar is also the clearance reduction side. The two mass margin consumption amounts Amt can subsequently enter the same same-side consumption group Srg.

[0068] In this embodiment, through the above steps, the seemingly normal fixed inspection item result Val in the single qualified result set Spr can be further decomposed into the target comparison result Cmp and the target difference value Gap. Then, using the contribution relationship Cor, the single deviation information such as being higher than the fixed inspection item target value Tar, equal to the fixed inspection item target value Tar, and lower than the fixed inspection item target value Tar is specifically attributed to the mass margin consumption direction Cdr and the mass margin consumption amount Amt on the final assembly quality index Aqi. This avoids simply interpreting all results that deviate from the upper or lower limit as the same quality impact. For example, in the shaft assembly scenario, the fixed inspection item result Val corresponding to the hole diameter is lower than the fixed inspection item target value T. ar will reduce assembly clearance, and Val, the result of the fixed inspection item corresponding to the shaft diameter, being higher than the target value Tar of the fixed inspection item will also reduce assembly clearance. Although the two correspond to different target comparison results Cmp, by matching the fixed inspection item identifier Fid and the target comparison result Cmp in the contribution relationship Cor, both can obtain the consumption side identifier Csi pointing to the same margin consumption side. Combined with the target difference Gap and the consumption coefficient Cef, the specific mass margin consumption Amt is calculated and finally written into the deviation contribution set Con. This allows subsequent steps to determine whether multiple single qualified deviations jointly compress the assembly clearance based on the clear consumption side and consumption amount, rather than remaining at the level of comparing the high and low of single results or human experience judgment.

[0069] Example 4 Please see Figure 3 Specifically, step S4 includes: S41. Group the deviation contribution set Con according to the same final assembly quality index Aqi and the same mass margin consumption direction Cdr to obtain the same-side consumption group Srg. Specifically: When grouping the deviation contribution set Con, read the deviation contribution record in the deviation contribution set Con one by one. Each deviation contribution record includes at least the final assembly quality index Aqi, the fixed inspection item identifier Fid, the single deviation value Dev, the mass margin consumption direction Cdr, and the mass margin consumption amount Amt. The final assembly quality index Aqi and the mass margin consumption direction Cdr are used together as the grouping basis.

[0070] More specifically: the same final assembly quality index Aqi is determined by the index name, index number or index index in the preset assembly relationship set Rel of the final assembly quality index Aqi. When the final assembly quality index Aqi corresponding to two deviation contribution records is completely consistent in index name, index number or index, the two deviation contribution records are identified as pointing to the same final assembly quality index Aqi.

[0071] Specifically: The same mass margin consumption direction Cdr is determined by the margin consumption side recorded in the mass margin consumption direction Cdr record. When the mass margin consumption direction Cdr corresponding to two deviation contribution records are both the gap reduction side, both the gap increase side, both the insufficient compression side, or both the coaxial deviation increase side, the two deviation contribution records are considered to have the same mass margin consumption direction Cdr.

[0072] Specifically: Only deviation contribution records with the same final assembly quality index Aqi and the same mass allowance consumption direction Cdr are classified into the same same-side consumption group Srg. For example, if the mass allowance consumption direction Cdr generated when the hole diameter is lower than the fixed inspection item target value Tar is the clearance reduction side, and the mass allowance consumption direction Cdr generated when the shaft diameter is higher than the fixed inspection item target value Tar is also the clearance reduction side, and both point to the final assembly quality index Aqi corresponding to the assembly clearance, the deviation contribution records corresponding to the two are classified into the same same-side consumption group Srg.

[0073] S42. Calculate the quantity and cumulative value of the mass margin consumption Amt in each same-side consumption group Srg; Specifically: When performing statistics on each same-side consumption group Srg, first count the number of mass margin consumption Amt items contained in the same-side consumption group Srg to obtain the consumption quantity corresponding to the same-side consumption group Srg. Then, accumulate each mass margin consumption Amt item in the same-side consumption group Srg according to the same unit of measurement to obtain the cumulative consumption value corresponding to the same-side consumption group Srg.

[0074] Specifically: Before accumulating the mass margin consumption Amt, first confirm that the mass margin consumption Amt in the same side consumption group Srg has been converted to the unit of measurement corresponding to the final assembly quality index Aqi through the consumption coefficient Cef. For example, when the final assembly quality index Aqi is the assembly gap, the mass margin consumption Amt is uniformly in millimeters or micrometers. When the final assembly quality index Aqi is the electrical connection reliability, the mass margin consumption Amt is uniformly in the numerical unit corresponding to the resistance margin or reliability margin.

[0075] Specifically: When there is a deviation contribution record in the same side consumption group Srg that is missing the mass margin consumption Amt, cannot confirm the unit of measurement, or does not match the fixed test item identifier Fid with the preset assembly relationship set Rel, the corresponding deviation contribution record will be written into the abnormal record queue, and the corresponding deviation contribution record will not be included in the quantity statistics and cumulative calculation of the same side consumption group Srg.

[0076] S43. When the number of mass margin consumption Amt in the same same-side consumption group Srg is not less than two, the cumulative value of all mass margin consumption Amt in the same same-side consumption group Srg is defined as the same-direction consumption superposition result Sra.

[0077] Step S4 further includes: Specifically: Set at least two mass margin consumption values ​​Amt as the same-direction superposition judgment condition to distinguish the single-item margin consumption caused by the deviation of a single fixed detection item result Val from the fixed detection item target value Tar, and the superposition margin consumption caused by multiple fixed detection item results Val in the same mass margin consumption direction Cdr.

[0078] Specifically: When there is only one mass margin consumption Amt in the same consumption group Srg on the same side, it means that only one single qualified fixed test item result Val consumes the mass margin in the corresponding mass margin consumption direction Cdr, and it is not defined as the same-direction consumption superposition result Sra; when there are two or more mass margin consumption Amt in the same consumption group Srg on the same side, the cumulative value of all mass margin consumption Amt is defined as the same-direction consumption superposition result Sra.

[0079] Specifically: The superimposed result of the same-direction consumption Sra corresponds one-to-one with the final assembly quality index Aqi and the mass margin consumption direction Cdr of the same-side consumption group Srg. For example, under the final assembly quality index Aqi corresponding to the assembly gap, when the hole diameter is too small, the shaft diameter is too large, and the coating is too thick, three mass margin consumption amounts Amt are generated pointing to the gap reduction side, respectively. The cumulative value of the three mass margin consumption amounts Amt is defined as the superimposed result of the same-direction consumption Sra corresponding to the gap reduction side of the assembly gap.

[0080] S44. Read the allowable mass margin Lim corresponding to the final assembly quality index Aqi from the preset assembly relationship set Rel; Specifically: The mass margin Lim is allowed to be pre-configured in the preset assembly relationship set Rel according to the final assembly quality index Aqi. The mass margin Lim is allowed to be used to record the margin that can be consumed by a single deviation from the target state to the failure boundary of the final assembly quality index Aqi.

[0081] Specifically: The allowable mass margin Lim is determined based on product drawings, assembly technical requirements, functional test requirements, sealing design requirements, electrical connection design requirements, or process verification results. When the final assembly quality index Aqi is the assembly gap, the allowable mass margin Lim can be determined by the distance between the target value of the assembly gap and the lower or upper limit of the assembly gap. When the final assembly quality index Aqi is the sealing compression amount, the allowable mass margin Lim can be determined by the distance between the target value of the sealing compression amount and the boundary between insufficient compression amount and excessive compression amount.

[0082] Specifically: When the same final assembly quality index Aqi has two mass margin consumption directions Cdr, the preset assembly relationship set Rel records the allowable mass margin Lim corresponding to each mass margin consumption direction Cdr. For example, the final assembly quality index Aqi corresponding to the assembly gap can record the allowable mass margin Lim on the gap reduction side and the allowable mass margin Lim on the gap increase side, so that subsequent calculations can read the corresponding allowable mass margin Lim according to the mass margin consumption direction Cdr corresponding to the same direction consumption superposition result Sra.

[0083] S45. Subtract the corresponding same-direction consumption superposition result Sra from the allowable mass margin Lim to obtain the combined mass margin result Qmr. The combined mass margin result Qmr is used to record the remaining acceptable margin of the final assembly quality index Aqi after multiple individually qualified fixed inspection item results Val are superimposed on the same mass margin consumption direction Cdr.

[0084] Specifically: The combined mass margin result Qmr is determined by the difference between the allowable mass margin Lim and the superimposed result Sra of the same-direction consumption. When the allowable mass margin Lim is greater than the superimposed result Sra of the same-direction consumption, the combined mass margin result Qmr is positive, indicating that the final assembly quality index Aqi still retains an acceptable margin in the corresponding mass margin consumption direction Cdr. When the allowable mass margin Lim is equal to the superimposed result Sra of the same-direction consumption, the combined mass margin result Qmr is zero, indicating that the acceptable margin of the final assembly quality index Aqi in the corresponding mass margin consumption direction Cdr has been exhausted. When the allowable mass margin Lim is less than the superimposed result Sra of the same-direction consumption, the combined mass margin result Qmr is negative, indicating that the results Val of multiple individually qualified fixed inspection items have collectively exceeded the acceptable margin in the corresponding mass margin consumption direction Cdr.

[0085] Specifically: The combined mass margin result Qmr retains the corresponding final assembly quality index Aqi, mass margin consumption direction Cdr, allowable mass margin Lim, and same-direction consumption superposition result Sra. This allows subsequent steps to clearly identify which final assembly quality index Aqi and which mass margin consumption direction Cdr has insufficient remaining margin. For example, in the final assembly quality index Aqi corresponding to the assembly gap, when the allowable mass margin Lim on the gap reduction side is 0.050mm and the same-direction consumption superposition result Sra is 0.065mm, the combined mass margin result Qmr is -0.015mm, indicating that multiple individual qualified deviations have collectively exceeded the allowable margin on the gap reduction side.

[0086] Step S5 includes: S51. Compare the combined mass margin result Qmr with the preset combined mass margin requirement Req to obtain the margin determination result Jdg. The margin determination result Jdg includes two results: satisfying the preset combined mass margin requirement Req and not satisfying the preset combined mass margin requirement Req. Specifically: The preset assembly mass margin requirement Req is used to represent the minimum remaining margin that the assembly mass margin result Qmr needs to retain. The preset assembly mass margin requirement Req is determined based on the product assembly safety margin, functional test margin, process verification results, or quality control plan.

[0087] Specifically: When comparing the combined mass margin result Qmr with the preset combined mass margin requirement Req, if the combined mass margin result Qmr is greater than or equal to the preset combined mass margin requirement Req, the margin determination result Jdg is recorded as meeting the preset combined mass margin requirement Req; if the combined mass margin result Qmr is less than the preset combined mass margin requirement Req, the margin determination result Jdg is recorded as not meeting the preset combined mass margin requirement Req.

[0088] Specifically: The preset assembly mass margin requirement Req can be set to zero or a safety reserve value greater than zero. When the product requirement is that it does not exceed the failure boundary, the preset assembly mass margin requirement Req is set to zero. When the product requirement is to retain a certain safety margin before entering the final assembly, the preset assembly mass margin requirement Req is set to the safety reserve value determined by process verification. For example, when the assembly gap is required to retain at least 0.010mm of margin before entering the final assembly, the preset assembly mass margin requirement Req is set to 0.010mm.

[0089] S52. When the margin determination result Jdg does not meet the preset combined quality margin requirement Req, read the control rule record that is consistent with the final assembly quality index Aqi and the quality margin consumption direction Cdr from the control rule set Rul, and determine the strategy type field Sty, the execution object field Obj, the trigger condition field Trg and the verification station field Vst according to the control rule record. Specifically: The control rule set Rul is a set of rules pre-established according to the final assembly quality index Aqi, the quality margin consumption direction Cdr, and the margin judgment result Jdg. Each control rule record in the control rule set Rul includes the final assembly quality index Aqi, the quality margin consumption direction Cdr, the margin judgment result Jdg, the strategy type field Sty, the execution object field Obj, the trigger condition field Trg, and the verification station field Vst.

[0090] Specifically: When reading control rule records, the final assembly quality index Aqi, the quality margin consumption direction Cdr, and the margin judgment result Jdg corresponding to the combined quality margin result Qmr are used as matching conditions to search for a matching control rule record in the control rule set Rul; when a unique control rule record is found, the strategy type field Sty, the execution object field Obj, the trigger condition field Trg, and the verification station field Vst in the unique control rule record are read; when multiple control rule records are found, the matching control rule record is selected according to the product model, process version, or strategy priority; when no control rule record is found, a rule missing prompt is generated.

[0091] Specifically: the Strategy Type field Sty is used to record the type of control strategy to be executed; the Execution Object field Obj is used to record the assembly object number Aob, the fixed inspection item identifier Fid, the fixed inspection station number Sta, or the subsequent assembly position to be controlled; the Trigger Condition field Trg is used to record the conditions for triggering the real-time quality control strategy Rcs; and the Verification Station field Vst is used to record at which subsequent fixed inspection station the final assembly quality index Aqi needs to be verified after executing the real-time quality control strategy Rcs.

[0092] S53. Generate the real-time quality control strategy Rcs based on the strategy type field Sty, the execution object field Obj, the trigger condition field Trg, and the verification station field Vst. The strategy type field Sty is used to record the strategy types that are hit by the control rule set Rul in the following categories: prohibition of same-direction deviation pairing, priority pairing of reverse deviation, re-inspection, isolation, stricter subsequent functional testing, and flow restriction.

[0093] Specifically, the real-time quality control strategy Rcs is generated by the strategy type field Sty, the execution object field Obj, the trigger condition field Trg, and the verification station field Vst. This allows the real-time quality control strategy Rcs to simultaneously include what strategy to execute, which object to apply to, under what conditions to execute, and at which fixed inspection station to verify the execution effect.

[0094] Specifically: When the strategy type field Sty is set to prohibit matching of same-direction deviations, the execution object field Obj records the assembly object number Aob and the corresponding mass margin consumption direction Cdr. The real-time quality control strategy Rcs is used to prohibit the assembly object number Aob from continuing to match with other assembly objects that generate the same mass margin consumption direction Cdr. When the strategy type field Sty is set to prioritize matching of opposite deviations, the execution object field Obj records the assembly object number Aob and the opposite mass margin consumption direction Cdr that needs to be matched. The real-time quality control strategy Rcs is used to prioritize matching with assembly objects that can compensate for the current mass margin consumption direction Cdr.

[0095] Specifically: When the strategy type field Sty is "re-inspection", the execution object field Obj records the assembly object number Aob that needs to be re-inspected and the fixed inspection item identifier Fid, and the verification station field Vst records the fixed inspection station number Sta that performs the re-inspection; when the strategy type field Sty is "isolation", the execution object field Obj records the assembly object number Aob that needs to be isolated, and the trigger condition field Trg records that the combined quality margin result Qmr is less than the preset combined quality margin requirement Req; when the strategy type field Sty is "stricter subsequent functional testing", the verification station field Vst records the subsequent functional testing station, so that the corresponding assembly object performs stricter test items or longer test time when entering the subsequent functional testing station; when the strategy type field Sty is "flow restriction", the execution object field Obj records the assembly object number Aob and the next fixed inspection station number Sta that is allowed to flow to, preventing the corresponding assembly object from directly entering the final release stage when the combined quality margin result Qmr is insufficient.

[0096] In this embodiment, through the above steps, the dispersed mass margin consumption Amt in the deviation contribution set Con can be grouped into the same-side consumption group Srg according to the same final assembly quality index Aqi and the same mass margin consumption direction Cdr. Then, the same-direction consumption superposition result Sra is used to determine how much margin has been consumed by multiple individual qualified deviations on the same margin consumption side. The combined mass margin result Qmr is calculated using the allowable mass margin Lim and the same-direction consumption superposition result Sra, thereby converting whether safe assembly is still possible after the superposition of multiple individual qualified results into a comparable remaining margin judgment. When the margin judgment result Jdg does not meet the preset combined mass margin requirement Req, the strategy type field is further determined through the control rule set Rul. The system uses fields such as Sty, Execution Object (Obj), Trigger Condition (Trg), and Verification Station (Vst) to enable the real-time quality control strategy Rcs to go beyond simple alarms. It allows for the precise control of which assembly object, under what conditions, which strategy is executed, and at which station the effect is verified. For example, when small hole diameter, large shaft diameter, and thick coating all compress assembly clearance, the system can record the result based on the final assembly quality index Aqi and the mass allowance consumption direction Cdr, which are control rules prohibiting pairing of parts with the same direction of deviation or prioritizing pairing of parts with opposite deviations. This prevents the assembly object from being paired with parts that also consume clearance allowance and directs the verification position to the subsequent assembly clearance detection station. This reduces problems such as over-tight assembly, assembly overheating, increased vibration, and post-assembly rework.

[0097] Example 5 For a system for constructing real-time quality control strategies for 5G industrial terminals, please refer to [link / reference]. Figure 4 Specifically, it includes a terminal data acquisition module, a single-item detection module, a deviation accumulation module, a margin analysis module, and a quality control decision module; The terminal data acquisition module collects fixed inspection result sets Fdr uploaded by multiple 5G industrial terminals at different fixed inspection stations, and associates the fixed inspection result sets Fdr based on the same assembly object number Aob. The fixed inspection result set Fdr includes the fixed inspection item result Val, the fixed inspection item target value Tar, and the fixed inspection item qualified range Ran. The single-item inspection module determines the fixed inspection item result Val that participates in the calculation of the same final assembly quality index Aqi according to the preset assembly relationship set Rel. When all the fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi meet the corresponding fixed inspection item qualification range Ran, a single-item qualification result set Spr is formed. The deviation accumulation module calculates the corresponding single-item deviation value Dev based on the difference between the result Val of each fixed inspection item in the single-item qualified result set Spr and the corresponding fixed inspection item target value Tar. It also determines the direction of mass margin consumption Cdr and the amount of mass margin consumption Amt of each single-item deviation value Dev to the final assembly quality index Aqi based on the preset assembly relationship set Rel, forming a deviation contribution set Con. When multiple mass margin consumption directions Cdr in the deviation contribution set Con point to the same margin consumption side of the same final assembly quality index Aqi, the margin analysis module calculates the same-direction consumption superposition result Sra based on the corresponding mass margin consumption Amt, and calculates the combined mass margin result Qmr based on the same-direction consumption superposition result Sra. When the combined quality margin result Qmr does not meet the preset combined quality margin requirement Req, the quality control decision module generates a real-time quality control strategy Rcs based on the control rule set Rul. The real-time quality control strategy Rcs reflects the influence of multiple individually qualified fixed inspection item results Val on the same direction of margin consumption of the final assembly quality index Aqi.

[0098] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

A method for constructing a real-time quality control strategy for 1.5G industrial terminals, characterized by: Includes the following steps: S1. Collect fixed inspection result set Fdr uploaded by multiple 5G industrial terminals at different fixed inspection stations, and associate the fixed inspection result set Fdr with the same assembly object number Aob. The fixed inspection result set Fdr includes fixed inspection item result Val, fixed inspection item target value Tar, and fixed inspection item qualified range Ran. S2. Determine the fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi based on the preset assembly relationship set Rel. When all fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi meet the corresponding fixed inspection item qualification range Ran, a single qualified result set Spr is formed. S3. Based on the difference between Val, the result of each fixed inspection item in the single qualified result set Spr, and Tar, the corresponding single deviation value Dev is calculated. Based on the preset assembly relationship set Rel, the mass margin consumption direction Cdr and mass margin consumption amount Amt of each single deviation value Dev to the final assembly quality index Aqi are determined, forming the deviation contribution set Con. S4. When multiple mass margin consumption directions Cdr in the deviation contribution set Con point to the same margin consumption side of the same final assembly quality index Aqi, calculate the same-direction consumption superposition result Sra according to the corresponding mass margin consumption Amt, and calculate the combined mass margin result Qmr according to the same-direction consumption superposition result Sra. S5. When the combined mass margin result Qmr does not meet the preset combined mass margin requirement Req, a real-time quality control strategy Rcs is generated according to the control rule set Rul. The real-time quality control strategy Rcs reflects the influence of multiple single qualified fixed inspection item results Val on the same direction of margin consumption of the final assembly quality index Aqi.

2. The method for constructing a real-time quality control strategy for 5G industrial terminals according to claim 1, characterized in that: Step S1 includes: S11. Multiple 5G industrial terminals collect the assembly object number Aob, fixed inspection item identifier Fid, fixed inspection item result Val, fixed inspection item target value Tar, fixed inspection item qualified range Ran, fixed inspection station number Sta, and inspection time Tim generated by their respective fixed inspection stations through the fixed inspection data interface of their fixed inspection stations. S12. The assembly object number Aob, fixed inspection item identifier Fid, fixed inspection item result Val, fixed inspection item target value Tar, fixed inspection item qualified range Ran, fixed inspection station number Sta, and inspection time Tim collected from the same fixed inspection station are encapsulated into a fixed inspection data item Dti, and the fixed inspection data item Dti is transmitted to the industrial edge terminal server through the 5G private network. S13. Group multiple fixed inspection data items Dti with the same assembly object number Aob into the same fixed inspection result set Fdr.

3. The method for constructing a real-time quality control strategy for 5G industrial terminals according to claim 2, characterized in that: Step S2 includes: S21. Read the preset assembly relationship set Rel. The preset assembly relationship set Rel includes the final assembly quality index Aqi, multiple fixed inspection item identifiers Fid that participate in the calculation of the same final assembly quality index Aqi, the fixed inspection item target value Tar corresponding to each fixed inspection item identifier Fid, the fixed inspection item qualified range Ran corresponding to each fixed inspection item identifier Fid, and the contribution relationship Cor corresponding to each fixed inspection item identifier Fid.

4. The method for constructing a real-time quality control strategy for 5G industrial terminals according to claim 3, characterized in that: Step S2 further includes: S22. According to the multiple fixed inspection item identifiers Fid in the preset assembly relationship set Rel, extract all fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi from the fixed inspection result set Fdr corresponding to the same assembly object number Aob. S23. Compare the result Val of each fixed test item with the corresponding qualified range Ran of the fixed test item to obtain the single judgment result Psr corresponding to the result Val of each fixed test item. The single judgment result Psr includes two results: falling into the qualified range Ran of the fixed test item and not falling into the qualified range Ran of the fixed test item. S24. When all fixed inspection item results Val corresponding to the calculation of the same final assembly quality index Aqi are within the qualified range Ran of the fixed inspection item, write all fixed inspection item results Val that are calculated for the same final assembly quality index Aqi into the single qualified result set Spr.

5. The method for constructing a real-time quality control strategy for 5G industrial terminals according to claim 4, characterized in that: Step S3 includes: S31. For each fixed test item result Val in the single qualified result set Spr, perform a numerical comparison with the corresponding fixed test item target value Tar to obtain the target comparison result Cmp. The target comparison result Cmp includes three results: higher than the fixed test item target value Tar, equal to the fixed test item target value Tar, and lower than the fixed test item target value Tar. S32. Calculate the absolute value of the difference between the result Val of each fixed detection item and the target value Tar of the corresponding fixed detection item to obtain the target difference Gap. S33. Write the target comparison result Cmp and the target difference Gap corresponding to the result Val of the same fixed detection item into the single deviation value Dev, so that the single deviation value Dev simultaneously records the high-low comparison relationship and numerical difference between the result Val of the fixed detection item and the target value Tar of the fixed detection item.

6. The method for constructing a real-time quality control strategy for 5G industrial terminals according to claim 5, characterized in that: Step S3 further includes: S34, The contribution relationship Cor includes the corresponding record between the fixed detection item identifier Fid, the target comparison result Cmp, the consumption side identifier Csi, and the consumption coefficient Cef; S35. Match the corresponding record in the contribution relationship Cor that is consistent with the fixed detection item identifier Fid and the target comparison result Cmp corresponding to the single deviation value Dev, and obtain the consumption side identifier Csi and consumption coefficient Cef corresponding to the single deviation value Dev; S36. Define the consumption side identifier Csi as the mass margin consumption direction Cdr, and define the product of the target difference Gap and the consumption coefficient Cef as the mass margin consumption amount Amt. Then write the single deviation value Dev, the mass margin consumption direction Cdr and the mass margin consumption amount Amt into the deviation contribution set Con.

7. The method for constructing a real-time quality control strategy for 5G industrial terminals according to claim 6, characterized in that: Step S4 includes: S41. Group the deviation contribution set Con according to the same final assembly quality index Aqi and the same mass margin consumption direction Cdr to obtain the same-side consumption group Srg. S42. Count the quantity and cumulative value of the mass margin consumption Amt in each same-side consumption group Srg; S43. When the number of mass margin consumption Amt in the same same-side consumption group Srg is not less than two, the cumulative value of all mass margin consumption Amt in the same same-side consumption group Srg is defined as the same-direction consumption superposition result Sra.

8. The method for constructing a real-time quality control strategy for 5G industrial terminals according to claim 7, characterized in that: Step S4 further includes: S44. Read the allowable mass margin Lim corresponding to the final assembly quality index Aqi from the preset assembly relationship set Rel; S45. Subtract the corresponding same-direction consumption superposition result Sra from the allowable mass margin Lim to obtain the combined mass margin result Qmr. The combined mass margin result Qmr is used to record the remaining acceptable margin of the final assembly quality index Aqi after multiple individually qualified fixed inspection item results Val are superimposed on the same mass margin consumption direction Cdr.

9. The method for constructing a real-time quality control strategy for 5G industrial terminals according to claim 8, characterized in that: Step S5 includes: S51. Compare the combined mass margin result Qmr with the preset combined mass margin requirement Req to obtain the margin determination result Jdg. The margin determination result Jdg includes two results: satisfying the preset combined mass margin requirement Req and not satisfying the preset combined mass margin requirement Req. S52. When the margin determination result Jdg does not meet the preset combined quality margin requirement Req, read the control rule record that is consistent with the final assembly quality index Aqi and the quality margin consumption direction Cdr from the control rule set Rul, and determine the strategy type field Sty, the execution object field Obj, the trigger condition field Trg and the verification station field Vst according to the control rule record. S53. Generate the real-time quality control strategy Rcs based on the strategy type field Sty, the execution object field Obj, the trigger condition field Trg, and the verification station field Vst. The strategy type field Sty is used to record the strategy types that are hit by the control rule set Rul in the following categories: prohibition of same-direction deviation pairing, priority pairing of reverse deviation, re-inspection, isolation, stricter subsequent functional testing, and flow restriction.

10. A system for constructing a real-time quality control strategy for 5G industrial terminals, applied to the method for constructing a real-time quality control strategy for 5G industrial terminals as described in any one of claims 1 to 9, characterized in that: It includes a terminal data acquisition module, a single-item detection module, a deviation accumulation module, a margin analysis module, and a quality control decision module; The terminal data acquisition module collects fixed inspection result sets Fdr uploaded by multiple 5G industrial terminals at different fixed inspection stations, and associates the fixed inspection result sets Fdr based on the same assembly object number Aob. The fixed inspection result set Fdr includes the fixed inspection item result Val, the fixed inspection item target value Tar, and the fixed inspection item qualified range Ran. The single-item inspection module determines the fixed inspection item result Val that participates in the calculation of the same final assembly quality index Aqi according to the preset assembly relationship set Rel. When all the fixed inspection item results Val that participate in the calculation of the same final assembly quality index Aqi meet the corresponding fixed inspection item qualification range Ran, a single-item qualification result set Spr is formed. The deviation accumulation module calculates the corresponding single-item deviation value Dev based on the difference between the result Val of each fixed inspection item in the single-item qualified result set Spr and the corresponding fixed inspection item target value Tar. It also determines the direction of mass margin consumption Cdr and the amount of mass margin consumption Amt of each single-item deviation value Dev to the final assembly quality index Aqi based on the preset assembly relationship set Rel, forming a deviation contribution set Con. When multiple mass margin consumption directions Cdr in the deviation contribution set Con point to the same margin consumption side of the same final assembly quality index Aqi, the margin analysis module calculates the same-direction consumption superposition result Sra based on the corresponding mass margin consumption Amt, and calculates the combined mass margin result Qmr based on the same-direction consumption superposition result Sra. When the combined quality margin result Qmr does not meet the preset combined quality margin requirement Req, the quality control decision module generates a real-time quality control strategy Rcs based on the control rule set Rul. The real-time quality control strategy Rcs reflects the influence of multiple individually qualified fixed inspection item results Val on the same direction of margin consumption of the final assembly quality index Aqi.

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