Steering gear structural components quality test management system based on data processing

Abstract

The present invention relates to the field of product quality management and control technology, in particular to a steering gear structural component quality test management system based on data processing, including a steering gear transmission part parameter acquisition module, a target circulating ball steering gear operating parameter acquisition and analysis module, a target circulating ball steering gear transmission quality assessment module, a target circulating ball steering gear control and verification parameter module, a control module, and a database; the steering gear transmission part parameter acquisition module, the target circulating ball steering gear operating parameter acquisition and analysis module, the target circulating ball steering gear transmission quality assessment module, the target circulating ball steering gear control and verification parameter module, and the control module are all connected to the database. The present invention can complete the analysis of the operating safety of the target steering gear under the operating state, realize quantitative analysis by integrating multiple operating parameters, complete the comprehensive supervision and control of the operating state of the target circulating ball steering gear, and ensure the accuracy of the test result analysis of the target circulating ball steering gear.

Description

Technical Field

[0001] The invention relates to the technical field of product structural component testing and evaluation control, in particular to a steering gear structural component quality testing management system based on data processing. Background Art

[0002] The testing and evaluation of the product performance of machine structural components is of great significance to improving product quality. At present, the method of using computers to realize data processing to control the quality of machine structural components has been gradually applied in the vehicle industry. As the most important component in the steering system that controls the direction of the car, the product quality evaluation of the steering gear in the production line process has gradually formed a relatively strict management and control mechanism.

[0003] For example, a method related to noise testing of automobile steering gear assembly quality is disclosed in the patent document with patent publication number CN117168849A and IPC classification number G01M17 / 06. It can be seen from its application documents that this prior art mainly prevents misjudgment and omission of product noise problems by effectively identifying abnormally assembled products.

[0004] However, when this evaluation and testing method is used in the quality analysis of evaluating and controlling recirculating ball steering gears, the following problems exist: on the one hand, noise is not the only factor considered when evaluating the product quality of recirculating ball steering gears. This test method has great limitations and low accuracy. It also ignores the influence of other factors such as the vibration of the steering gear during operation and the heating of internal key components. Therefore, this existing technology cannot be accurately used in the product quality control analysis of steering gears. On the other hand, due to the presence of precision low-noise transmission parts such as screws, steering nuts, rack gear fans, and steel balls inside the recirculating ball steering gear, there are complex load changes in the internal transmission process of the entire structural parts. Even when there is no abnormality in the noise, product quality problems may occur in the internal structure. Therefore, this existing analysis method has uncertainty.

[0005] Therefore, in order to ensure the reliability of the control link of the factory product quality of the recirculating ball steering gear, the present invention proposes a steering gear structural component quality test management system that controls multiple factors and is based on data processing to better solve the problems existing in the prior art. Summary of the invention

[0006] The present invention solves one of the above technical problems, and the technical solution adopted is: a steering gear structural component quality test management system based on data processing, comprising:

[0007] A steering gear transmission parts parameter acquisition module is used to acquire relevant parameters of the transmission parts that constitute the target recirculating ball steering gear before assembly, wherein the transmission parts include a steering screw, a steering nut, a rack, and a gear fan;

[0008] A target recirculating ball steering gear operating parameter acquisition and analysis module, used to acquire relevant operating parameter information of the assembled target recirculating ball steering gear under the operating state;

[0009] The target recirculating ball steering gear transmission quality assessment module is used to obtain the processing results of the transmission parts parameter acquisition module and the target recirculating ball steering gear operation parameter acquisition and analysis module and complete a comprehensive assessment of the transmission safety and stability of the target recirculating ball steering gear;

[0010] A target recirculating ball steering gear control and verification parameter module is used to reversely control abnormal parts of the target recirculating ball steering gear according to the evaluation results of the target recirculating ball steering gear operation parameter acquisition and analysis module and the target recirculating ball steering gear transmission quality evaluation module to improve its operation quality;

[0011] The control module is used to receive feedback information and processing results from each module and issue relevant instructions;

[0012] The database is used to store all parameter information and all preset information generated in the system.

[0013] In any of the above solutions, preferably, the working process of the steering gear transmission part parameter acquisition module includes:

[0014] The steering screw, steering nut, rack, and gear fan that constitute the target recirculating ball steering gear before assembly are placed separately inside the industrial CT instrument and the three-dimensional imaging information of the steering screw, steering nut, rack, and gear fan is obtained one by one;

[0015] According to the obtained three-dimensional imaging information of the steering screw, steering nut, rack, and gear fan, the visual modeling software is respectively imported, and the steering screw model diagram, the steering nut model diagram, the rack model diagram, and the gear fan model diagram are modeled in sequence;

[0016] Obtain the external contour dimension parameters and surface roughness information of the steering screw model diagram in the visual modeling software and compare them with the design parameters. If the external contour dimension parameters and surface roughness information of the steering screw model diagram are within the error range compared with the design parameters, the current steering screw model diagram dimensions meet the design requirements, that is, the steering screw dimensions and machining surface accuracy are qualified, otherwise they are unqualified;

[0017] When the steering screw size and machining surface accuracy are unqualified, the current steering screw parts are repaired and the above steps are repeated. If they cannot be repaired, they are directly discarded and a new steering screw part is selected to continue the analysis of size and machining surface accuracy until they meet the qualified requirements;

[0018] Repeat the above steps in the visual modeling software to continue to complete the parameter acquisition and analysis of the steering nut model diagram, the rack model diagram, and the gear sector model diagram until the dimensions and machining surface accuracy of the steering nut model diagram, the rack model diagram, and the gear sector model diagram are qualified;

[0019] When the steering screw, steering nut, rack and gear sector that make up the steering gear transmission parts are qualified, the steering gear assembly is completed and connected to the steering gear test platform in the operation workshop.

[0020] In any of the above solutions, preferably, the specific steps of obtaining relevant operating parameter information of the assembled target recirculating ball steering gear under the operating state include:

[0021] Obtaining parameter information of the steering screw, the steering nut, and the gear fan inside the target recirculating ball steering gear;

[0022] Obtain parameter information of the lubricating oil inside the steering gear housing and vibration information of the target steering gear housing in the operating state.

[0023] In any of the above solutions, preferably, the specific working steps of the target recirculating ball steering gear operating parameter acquisition and analysis module include:

[0024] The steering gear is assembled and connected to the test platform in the operation workshop, and the maximum torque load is applied to the power input end;

[0025] Intermittently complete the simulated operation of the steering gear under the usage times specified in the national standard on the test platform;

[0026] Keep the maximum torque load applied to the power input end of the steering gear;

[0027] Obtaining information on the length of cracks in the grooves of each thread groove transmission surface of the steering screw inside the target steering gear under the maximum torque load operation state through sensor visual analysis;

[0028] When the length of the slot crack is greater than the slot crack length threshold, the current slot crack is recorded as an excessively long slot crack. , the score is 10 points; when the slot crack length ≤ the slot crack length threshold, the current slot crack is recorded as the standard slot crack , the score is recorded as 3 points;

[0029] Obtain the shaft wall crack length information at the transmission shafts at both ends of the steering screw; when the shaft wall crack length is greater than the shaft wall crack length threshold, the current shaft wall crack length is recorded as an excessively long shaft wall crack. , the score is recorded as 6 points; when the shaft wall crack length ≤ the shaft wall crack length threshold, the current shaft wall crack length is recorded as the standard shaft wall crack , the score is recorded as 1 point;

[0030] By analyzing the formula Get the transmission risk coefficient of the current steering screw ;

[0031] in, is a natural constant, is the number of cracks in the overlong groove, is the number of cracks in the overlong shaft wall; Indicates the weight coefficient corresponding to the crack length in the groove and the crack length in the shaft wall;

[0032] The steering screw transmission hazard factor Compared with the transmission hidden danger coefficient threshold, when the transmission hidden danger coefficient When the transmission hidden danger coefficient threshold is reached, the transmission safety of the current steering screw is qualified, otherwise it is unqualified.

[0033] In any of the above solutions, preferably, the specific working steps of the target recirculating ball steering gear operating parameter acquisition and analysis module further include:

[0034] Get the radial runout amplitude of the steering nut in the target steering gear, recorded as ;

[0035] when When the nut exceeds 10 times in a steering cycle, it is recorded as excessive nut jump. If the nut exceeds 10 times in a steering cycle, a nut jump abnormal warning signal is issued.

[0036] By analyzing the formula Get the average radial runout value of the steering nut within a steering cycle ;

[0037] in, It is the number of radial runouts of the steering nut in one steering cycle;

[0038] Obtain crack information at the root of each transmission gear tooth on the rack integrally formed at the bottom of the nut;

[0039] When the transmission gear teeth have cracks on only one side, it is recorded as primary crack transmission gear teeth, and its number is recorded as ;

[0040] When there are cracks on both sides of the transmission gear teeth, it is recorded as a heavy crack transmission gear tooth, and the number is recorded as ;

[0041] When there are no cracks on both sides of the transmission gear teeth, it is recorded as a standard crack transmission gear tooth, and its number is recorded as ;

[0042] in, Indicates The number of the primary crack drive gear teeth, , Indicates The number of the heavy crack transmission gear teeth, ; Indicates The number of the heavy crack transmission gear teeth, ;

[0043] By analyzing the formula To the current steering nut tooth root defect ;

[0044] in, They represent the weight ratios of primary crack transmission gear factor, severe crack transmission gear factor, and standard crack transmission gear factor respectively;

[0045] When the gear tooth root defect When the transmission gear defect threshold is less than the transmission gear defect threshold, the initial transmission safety of the current steering nut is judged to be qualified, otherwise it is unqualified;

[0046] When the initial transmission safety of the steering nut fails to meet the standards, a transmission warning signal is issued and the information is uploaded to the database and control module.

[0047] In any of the above solutions, preferably, the specific working steps of the target recirculating ball steering gear operating parameter acquisition and analysis module further include:

[0048] The eccentricity of the end bearing at the steering arm position integrally formed with the gear sector to obtain the operating state inside the target steering gear is recorded as ;

[0049] Obtain the average eccentricity of the end bearing within 10 turning cycles ;in, The number of times the inner end bearing runs eccentrically in 10 steering cycles;

[0050] Get the number of tooth marks on the tooth surface of each passive gear tooth of the gear sector, recorded as ,in, Indicates the number of the passive gear teeth in the gear sector. , Indicates Number of tooth marks in each passive gear tooth, ;

[0051] Calculation of wear coefficient of gear transmission ,in, Indicates the threshold of the number of tooth marks set by the gear fan. They are the weight proportions of the average eccentricity assessment and the tooth mark quantity assessment of the end bearing respectively;

[0052] Obtain crack information at the root of each passive gear tooth from the transmission part of the gear fan;

[0053] When cracks exist on only one side of the passive gear tooth, it is recorded as a primary crack passive gear tooth, and its number is recorded as ; When there are cracks on both sides of the passive gear teeth, it is recorded as a heavy crack passive gear tooth, and its number is recorded as ; When there are no cracks on both sides of the passive gear teeth, it is recorded as a standard crack passive gear tooth, and its number is recorded as ;

[0054] in, Indicates The number of the primary crack passive gear teeth, , Indicates The number of the passive gear teeth with heavy cracks, ; Indicates The number of the passive gear teeth with heavy cracks, ;

[0055] Calculate the transmission defect of the current gear fan ,in, They represent the weight ratios of the passive gear tooth factor of primary cracks, the passive gear tooth factor of severe cracks, and the passive gear tooth factor of standard cracks respectively;

[0056] When the root defect of the passive gear tooth ≥ the corresponding passive gear tooth root defect threshold, it is judged that the initial transmission safety of the current gear fan is unqualified.

[0057] In any of the above solutions, preferably, the specific working steps of the target recirculating ball steering gear operating parameter acquisition and analysis module further include:

[0058] Obtain the viscosity index of the lubricating oil from the target recirculating ball steering gear , Transparency Index ;

[0059] The viscosity index of the lubricating oil will be obtained Standard viscosity index values ​​for lubricating oils Compare and calculate the lubricant viscosity deviation ;

[0060] Obtain the transparency index information of lubricating oil Standard transparency index value of lubricating oil Compare and calculate the lubricant transparency deviation ;

[0061] By analyzing the formula The lubricant performance compliance coefficient is obtained; where, Indicates the weight ratio of viscosity index factor and transparency index factor;

[0062] Will get and Compare, when If the current lubricant meets the requirements, it can continue to be used; otherwise, an early warning prompts that a new lubricant needs to be replaced.

[0063] In any of the above solutions, preferably, the specific working steps of the target recirculating ball steering gear operating parameter acquisition and analysis module further include:

[0064] Obtain the lateral vibration amplitude of each sampling point of the steering gear housing of the target recirculating ball steering gear under running state ,in, Indicates the number of the lateral vibration sampling point of the steering gear housing;

[0065] Obtain the longitudinal vibration amplitude of each sampling point of the steering gear housing of the target recirculating ball steering gear under running state ,in, Indicates the number of the longitudinal vibration sampling point of the steering gear housing;

[0066] Analysis and calculation of steering gear housing vibration compliance rate ,in, Indicates the vibration threshold of the steering gear housing, Respectively represent the weight coefficients of the longitudinal vibration amplitude factor and the transverse vibration amplitude factor;

[0067] When the steering gear housing vibration meets the rate When it is less than or equal to the steering gear housing vibration compliance rate setting value, the current steering gear housing vibration state meets the requirements; otherwise, the steering gear housing is in an excessive vibration state and a warning signal is issued.

[0068] In any of the above solutions, preferably, the specific working process of the target recirculating ball steering gear transmission quality assessment module includes:

[0069] Under the premise that the steering screw transmission safety is qualified, obtain the steering screw transmission hidden danger coefficient ;

[0070] Under the premise that the initial transmission safety of the steering nut is qualified, obtain the root defect of the transmission gear ;

[0071] Obtain the gear transmission wear coefficient that meets the requirements , Passive gear tooth root defect , Lubricating oil performance compliance coefficient ;

[0072] By analyzing the formula Get the target steering gear operation quality safety hazard coefficient ;

[0073] When the target steering gear running quality safety hazard coefficient > When, among them, Indicates the threshold value of the safety hazard coefficient of the target steering gear operation quality. The current target recirculating ball steering gear is in a safe operating state. Otherwise, it is in a dangerous operating state and issues a warning signal, prompting timely management and maintenance.

[0074] In any of the above solutions, preferably, the working process of the target recirculating ball steering gear control verification parameter module is as follows:

[0075] Acquire the warning information in the target recirculating ball steering gear operation parameter acquisition and analysis module and the target recirculating ball steering gear transmission quality assessment module;

[0076] Send instructions to the control module according to the specific content of the warning information and the corresponding position of the warning information, and the control module sends maintenance information to the maintenance personnel according to the instructions;

[0077] The maintenance personnel inspect and maintain the corresponding parts of the target recirculating ball steering gear according to the maintenance information. After the maintenance is completed, the target recirculating ball steering gear operation parameter acquisition and analysis module and the target recirculating ball steering gear transmission quality assessment module are repeatedly run. When all parameters of the target recirculating ball steering gear operation parameter acquisition and analysis module and the target recirculating ball steering gear transmission quality assessment module are qualified, the current target recirculating ball steering gear is in a normal operating state.

[0078] Otherwise, continue to repeat the above steps until the target recirculating ball steering gear is in normal operating condition.

[0079] Compared with the prior art, the present invention has the following beneficial effects:

[0080] 1. The product quality control system of the present invention can obtain the dimensional parameters of each core transmission part of the steering gear before assembly and judge the eligibility; when the parts meet the requirements, the steering gear is assembled, and the analysis and evaluation of various parameters inside the target circulating ball steering gear under the operating state are completed on the test platform, effectively ensuring the analysis of the operating safety of the target circulating ball steering gear under the test operating state, integrating multiple core operating parameters to achieve quantitative analysis, effectively completing the comprehensive supervision and control of the operating state of the target circulating ball steering gear, and ensuring the relative accuracy of the test result analysis of the target circulating ball steering gear.

[0081] 2. Based on the processing of multi-directional parameter data in the quality control system of this product, the transmission status of the target steering gear, the safety hazards and crack information of the transmission parts can be effectively monitored and acquired. At the same time, the status of the lubricating oil inside the target recirculating ball steering gear and the overall vibration status can be analyzed, effectively ensuring the real-time monitoring of the operating status of the target recirculating ball steering gear. During the monitoring process, early warning information can be sent to abnormal parts in time, effectively improving the effect of safety supervision.

[0082] 3. This system can lock the corresponding abnormal area according to the abnormal results after analysis and processing of each module, and rely on the control module to complete the sending of effective maintenance information, effectively realize the inspection and maintenance of the corresponding abnormal position according to the current maintenance information, and cycle through the analysis and evaluation of each module after maintenance to continue to calculate each abnormal parameter until all modules have abnormal parameters. At present, the entire target recirculating ball steering gear is in the operating state, effectively achieving the purpose of controlling the product quality of the target recirculating ball steering gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn according to the actual scale.

[0084] Figure 1 It is a schematic diagram of the connection of each module of the present invention.

[0085] Figure 2 This is a connection diagram of the control module of the present invention sending a command signal to maintenance personnel. DETAILED DESCRIPTION

[0086] The following is a detailed description of the embodiments of the technical solution of the present invention in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present invention. Figure 1-Figure 2 as shown in .

[0087] Embodiment: A steering gear structural component quality test management system based on data processing includes a steering gear transmission part parameter acquisition module, a target circulating ball steering gear operation parameter acquisition and analysis module, a target circulating ball steering gear transmission quality assessment module, a target circulating ball steering gear control and verification parameter module, a control module, and a database.

[0088] The steering gear transmission parts parameter acquisition module, the target circulating ball steering gear operation parameter acquisition and analysis module, the target circulating ball steering gear transmission quality assessment module, the target circulating ball steering gear regulation and verification parameter module, and the control module are all connected to the database signal.

[0089] The steering gear transmission parts parameter acquisition module is used to obtain relevant parameters of the transmission parts that constitute the target recirculating ball steering gear before assembly, wherein the transmission parts include a steering screw, a steering nut, a rack, and a gear fan.

[0090] It should be noted that the relevant parameters obtained here include the steering screw, steering nut, rack, and gear fan. The size parameters of the relevant parts are collected in advance according to the design information to facilitate subsequent quick calling.

[0091] The target recirculating ball steering gear operating parameter acquisition and analysis module is used to obtain relevant operating parameter information of the assembled target recirculating ball steering gear under the operating state.

[0092] The target recirculating ball steering gear transmission quality assessment module is used to obtain the processing results of the transmission parts parameter acquisition module and the target recirculating ball steering gear operation parameter acquisition and analysis module, and to complete a comprehensive assessment of the transmission safety and stability of the target recirculating ball steering gear.

[0093] The target recirculating ball steering gear control and verification parameter module is used to reversely control the abnormal parts of the target recirculating ball steering gear according to the evaluation results of the target recirculating ball steering gear operation parameter acquisition analysis module and the target recirculating ball steering gear transmission quality evaluation module so as to improve its operation quality.

[0094] The control module is used to receive feedback information and processing results from each module and issue relevant instructions.

[0095] The database is used to store all parameter information and all preset information generated in the system.

[0096] In any of the above schemes, it is preferred that the working process of the steering gear transmission part parameter acquisition module includes: placing the steering screw, steering nut, rack and gear fan that constitute the target recirculating ball steering gear before assembly separately inside the industrial CT instrument and successively acquiring the three-dimensional imaging information of the steering screw, steering nut, rack and gear fan.

[0097] According to the obtained three-dimensional imaging information of the steering screw, steering nut, rack and gear fan, they are respectively imported into the visual modeling software, and the steering screw model diagram, steering nut model diagram, rack model diagram and gear fan model diagram are modeled in sequence.

[0098] It needs to be explained that the steering screw, steering nut, rack and gear fan before assembly are the core transmission parts of the steering gear. When obtaining their dimensions, the industrial CT instrument is used for three-dimensional scanning and imaging. This can more accurately obtain the dimensional information of the workpiece that is currently being processed and waiting to be assembled, and can obtain the dimensional information more accurately. Compared with manual measurement, this method of obtaining workpiece dimensional parameters is more efficient and accurate.

[0099] The parameter information obtained by the industrial CT instrument directly establishes a communication connection with the existing visual modeling software, and the built-in finite element analysis module and solid modeling module of the visual modeling software can be directly used to complete the modeling of each model diagram.

[0100] The external contour dimension parameters and surface roughness information of the steering screw model diagram are obtained in the visual modeling software and compared with the design parameters. If the external contour dimension parameters and surface roughness information of the steering screw model diagram are within the error range compared with the design parameters, the current steering screw model diagram size meets the design requirements, that is, the steering screw size and processing surface accuracy are qualified, otherwise it is unqualified.

[0101] When the steering screw size and machining surface accuracy are unqualified, the current steering screw parts are repaired and the above steps are repeated. If they cannot be repaired, they are directly discarded and a new steering screw part is selected to continue the analysis of size and machining surface accuracy until they meet the qualified requirements.

[0102] It needs to be explained that by comparing the parameter dimensions of the model diagram after modeling with the preset parameter dimensions, the size information of the entire model and the processing surface accuracy information can be obtained, and the entire comparison process is more accurate and efficient; among them, the surface roughness measurement is directly completed quickly by using the scanning light section method in the existing technology.

[0103] Repeat the above steps in the visual modeling software to continue to complete the parameter acquisition and analysis of the steering nut model diagram, rack model diagram, and gear fan model diagram until the dimensions and processing surface accuracy of the steering nut model diagram, rack model diagram, and gear fan model diagram are qualified.

[0104] When the steering screw, steering nut, rack and gear fan that make up the steering gear transmission parts are qualified, the steering gear is assembled and connected to the steering gear test platform in the operation workshop. The steering gear test platform can meet the needs by using the test platform built into the production workshop for testing the operation of factory products.

[0105] In any of the above schemes, preferably, the specific steps of obtaining relevant operating parameter information of the assembled target recirculating ball steering gear under the operating state include: obtaining parameter information of the steering screw, parameter information of the steering nut, and parameter information of the gear fan inside the target recirculating ball steering gear.

[0106] Obtain parameter information of the lubricating oil inside the steering gear housing and vibration information of the target steering gear housing in the operating state.

[0107] It should be noted that when acquiring parameters, the parameter information of the steering screw, the parameter information of the steering nut, the parameter information of the gear fan, the parameter information of the lubricating oil and the vibration information of the target steering gear housing in the operating state are obtained. The use of multi-parameter acquisition method can more comprehensively obtain relevant information of the core key influencing factors, which can ensure the relative objectivity and accuracy of the subsequent evaluation results.

[0108] In any of the above schemes, preferably, the specific working steps of the target recirculating ball steering gear operating parameter acquisition and analysis module include: the steering gear is assembled and connected to the test platform in the operation workshop and the maximum torque load is applied to the power input end.

[0109] On the test platform, the simulated operation of the steering gear under the usage times specified in the national standard is completed intermittently.

[0110] It should be noted that the test platform inside the workshop can match the steering gear assembly products of the current production batch. After the steering gear assembly products are installed in place, their operating parameters and allowable torque load requirements are set and started in accordance with national standard testing requirements. This can better simulate the real working environment and improve the relative objectivity and accuracy of the analysis results.

[0111] Maintain the state of applying maximum torque load on the power input end of the steering gear; obtain the in-groove crack length information at each thread groove transmission surface of the steering screw inside the target steering gear under the maximum torque load operating state through sensor visual analysis.

[0112] When the length of the slot crack is greater than the slot crack length threshold, the current slot crack is recorded as an excessively long slot crack. , the score is 10 points; when the slot crack length ≤ the slot crack length threshold, the current slot crack is recorded as the standard slot crack , the score is recorded as 3 points.

[0113] Obtain the shaft wall crack length information at the transmission shafts at both ends of the steering screw; when the shaft wall crack length is greater than the shaft wall crack length threshold, the current shaft wall crack length is recorded as an excessively long shaft wall crack. , the score is recorded as 6 points; when the shaft wall crack length ≤ the shaft wall crack length threshold, the current shaft wall crack length is recorded as the standard shaft wall crack , the score is recorded as 1 point.

[0114] It should be noted that the built-in sensor obtains the corresponding crack information, and then classifies the cracks in different states by assigning scores and using the score size to represent its severity, which can better use the cumulative score to comprehensively judge the comprehensive impact of multiple cracks. In addition, when setting the crack length threshold, technical experts in the industry will make a comprehensive setting based on the size, material and operating conditions of the corresponding parts of the current steering gear and the relevant provisions of the national standard on the impact of cracks on the degree of damage to load strength, so as to improve the relative accuracy of the assessment. This part belongs to the common knowledge of technicians in this field.

[0115] By analyzing the formula Get the transmission risk coefficient of the current steering screw ;

[0116] in, is a natural constant, is the number of cracks in the overlong groove, is the number of cracks in the overlong shaft wall; Indicates the weight coefficient corresponding to the crack length in the groove and the crack length in the shaft wall.

[0117] The steering screw transmission hazard factor Compared with the transmission hidden danger coefficient threshold, when the transmission hidden danger coefficient ≤ the transmission hidden danger coefficient threshold, the transmission safety of the current steering screw is qualified, otherwise it is unqualified.

[0118] It should be noted that two different influencing factors, namely, cracks in the groove that are too long and cracks in the shaft wall that are too long, are used to comprehensively analyze the transmission safety hazards of the entire steering screw. The appropriate weight coefficient can be formulated based on the material and transmission requirements of the current steering screw and the influence of cracks in different parts of the national standard on the failure degree of shaft transmission parts. I will not go into details here. The exponential model is used to better reflect the exponential increase in the degree of damage to the entire steering screw as the cracks continue to increase, and effectively matches the assessment and definition of transmission hazards in the actual transmission process. According to the different operating loads of the steering screw and the different materials and shaft diameters of the steering screw itself, a reasonable transmission hazard coefficient threshold can be obtained by mechanical calculation. The specific calculation is common knowledge of technicians in this field.

[0119] In any of the above schemes, preferably, the specific working steps of the target recirculating ball steering gear operating parameter acquisition and analysis module also include: obtaining the radial runout amplitude of the steering nut operating state inside the target steering gear, recorded as .when When the nut exceeds 10 times in a steering cycle, it is recorded as excessive nut jump. If the nut exceeds 10 times in a steering cycle, a nut jump abnormal warning signal is issued.

[0120] Taking into account that the radial runout of the steering nut will lead to an increase in the vibration amplitude of the entire steering gear internal transmission, it is regarded as one of the key factors affecting product vibration. By obtaining the radial runout amplitude of the steering nut in the operating state, the abnormal situation of the steering nut can be better reflected.

[0121] By analyzing the formula Get the average radial runout value of the steering nut within a steering cycle ;in, It is the number of radial runouts of the steering nut in one steering cycle.

[0122] The average radial runout amplitude value of the steering nut within a steering cycle can reflect the runout condition of the operating nut under long-term operation. The average radial runout amplitude value can more objectively reflect the actual runout condition.

[0123] Get the crack information of the root of each transmission gear tooth on the rack integrally formed at the bottom of the nut; when the transmission gear tooth has cracks only on one side, it is recorded as a primary crack transmission gear tooth, and its number is recorded as ; When there are cracks on both sides of the transmission gear teeth, it is recorded as a heavy crack transmission gear tooth, and the number is recorded as ; When there are no cracks on both sides of the transmission gear teeth, it is recorded as a standard crack transmission gear tooth, and its number is recorded as ;in, Indicates The number of the primary crack drive gear teeth, , Indicates The number of the heavy crack transmission gear teeth, ; Indicates The number of the heavy crack transmission gear teeth, By analyzing the formula Get the root defect of the current steering nut ;

[0124] in, They respectively represent the weight ratios of the primary crack transmission gear tooth factor, the severe crack transmission gear tooth factor, and the standard crack transmission gear tooth factor.

[0125] When the gear tooth root defect When the transmission gear defect threshold is less than the transmission gear defect threshold, the initial transmission safety of the current steering nut is judged to be qualified, otherwise it is unqualified.

[0126] It should be noted that during the rack transmission process, each gear tooth is a core force-bearing component, and the load at the root of the tooth is relatively large. Considering that cracks appear at the root of the tooth, the transmission capacity of the gear tooth will be damaged. Here, the built-in sensor is used to obtain crack information. The gear tooth is a standard component on the rack, and the load at its transmission part can be quickly obtained by mechanical analysis. At the same time, considering the material of the current rack and the torque load during the transmission process, the load of the gear teeth at the corresponding part can be calculated by technicians in this field. In addition, it can also be obtained by combining the material of the rack and the transmission modulus, speed and other information for analysis. The influence of tooth root cracks on castings or machined parts can be obtained by analyzing the influence of material and cracks on fatigue fracture strength. It can be obtained by comprehensively considering the load conditions and fatigue strength analysis calculation when setting the transmission gear defect threshold. It is common industry knowledge.

[0127] When the initial transmission safety of the steering nut fails to meet the standards, a transmission warning signal is issued and the information is uploaded to the database and control module.

[0128] In any of the above schemes, preferably, the specific working steps of the target recirculating ball steering gear operating parameter acquisition and analysis module also include: obtaining the end bearing eccentricity at the position of the steering arm integrally formed with the gear fan in the operating state inside the target steering gear, recorded as Obtain the average eccentricity of the end bearing within 10 turning cycles ;in, It is the number of times the inner end bearing runs eccentrically in 10 steering cycles.

[0129] It should be noted that, considering that eccentricity of the bearing will cause excessive wear and increased vibration during the entire rotation process, the eccentricity of the end bearing is used as a key influencing factor to better determine the influencing factors of the stability changes during the entire steering gear operation process.

[0130] Get the number of tooth marks on the tooth surface of each passive gear tooth of the gear sector, recorded as ,in, Indicates the number of the passive gear teeth in the gear sector. , Indicates Number of tooth marks in each passive gear tooth, .

[0131] Calculation of wear coefficient of gear transmission ,in, Indicates the threshold of the number of tooth marks set by the gear fan. They are the weight ratios of the average eccentricity assessment and the tooth mark quantity assessment of the end bearing respectively.

[0132] The crack information of the tooth root of each passive gear tooth is obtained from the transmission part of the gear fan.

[0133] When cracks exist on only one side of the passive gear tooth, it is recorded as a primary crack passive gear tooth, and its number is recorded as ; When there are cracks on both sides of the passive gear teeth, it is recorded as a heavy crack passive gear tooth, and its number is recorded as ; When there are no cracks on both sides of the passive gear teeth, it is recorded as a standard crack passive gear tooth, and its number is recorded as .

[0134] in, Indicates The number of the primary crack passive gear teeth, , Indicates The number of the passive gear teeth with heavy cracks, ; Indicates The number of the passive gear teeth with heavy cracks, .

[0135] Calculate the transmission defect of the current gear fan in, They respectively represent the weight ratios of the passive gear tooth factor of primary cracks, the passive gear tooth factor of severe cracks, and the passive gear tooth factor of standard cracks.

[0136] When the root defect of the passive gear tooth ≥ the corresponding passive gear tooth root defect threshold, it is judged that the initial transmission safety of the current gear fan is unqualified.

[0137] It should be noted that the built-in sensor is used to obtain crack information. The gear fan is a gear part that cooperates with the rack transmission. During the transmission process, the force on the passive gear teeth is also the core force area. The load on the root of the tooth is relatively large. Considering that cracks appear at the root of the tooth, the transmission capacity of the gear teeth will be damaged.

[0138] As a standard component on the gear fan, the load of the transmission part of the gear tooth can be quickly obtained by mechanical analysis. Taking into account the material of the current gear fan and the torque load during the transmission process, the load-bearing size of the gear teeth at the corresponding part can be calculated by technical personnel in this field. In addition, it can also be obtained by analyzing the material of the gear fan, the transmission modulus, the rotational speed and other information.

[0139] The influence of cracks at the root of each passive gear tooth of the gear sector on castings or machined parts can be obtained by analyzing the influence of material quality and cracks on fatigue fracture strength. This can be obtained by comprehensively considering the load conditions and fatigue strength analysis calculation when setting the defect threshold of the root of the passive gear teeth. This is common industry knowledge.

[0140] In any of the above schemes, preferably, the specific working steps of the target recirculating ball steering gear operation parameter acquisition and analysis module further include: obtaining the viscosity index of the lubricating oil from the inside of the target recirculating ball steering gear; , Transparency Index .

[0141] The viscosity index of the lubricating oil will be obtained Standard viscosity index values ​​for lubricating oils Compare and calculate the lubricant viscosity deviation .

[0142] Obtain the transparency index information of lubricating oil Standard transparency index value of lubricating oil Compare and calculate the lubricant transparency deviation .

[0143] By analyzing the formula The lubricant performance compliance coefficient is obtained; where, Indicates the weight ratio of viscosity index factor and transparency index factor.

[0144] Will get and Compare, when If the current lubricant meets the requirements, it can continue to be used; otherwise, an early warning prompts that a new lubricant needs to be replaced.

[0145] It should be noted that the viscosity of the lubricating oil has an important relationship with the amount of internal impurities. Considering that the viscosity of the internal lubricating oil will continue to increase during the operation of the internal parts of the steering gear, when the viscosity of the lubricating oil is too high, it will affect the normal transmission of each transmission part. Here, using the viscosity of the lubricating oil as a reference factor can more conveniently and simply judge the changes in the internal oil quality, and achieve the purpose of timely replacement when the viscosity of the lubricating oil does not meet the standard; the specific requirements for the viscosity of the lubricating oil can be directly set according to the built-in oil requirements of the corresponding industry vehicles. It is a conventional standard requirement in the industry and will not be repeated.

[0146] In any of the above schemes, preferably, the specific working steps of the target recirculating ball steering gear operating parameter acquisition and analysis module also include: obtaining the lateral vibration amplitude of each sampling point of the steering gear housing of the target recirculating ball steering gear in the operating state ,in, Indicates the number of the lateral vibration sampling point of the steering gear housing.

[0147] Obtain the longitudinal vibration amplitude of each sampling point of the steering gear housing of the target recirculating ball steering gear under running state ,in, Indicates the number of the longitudinal vibration sampling point of the steering gear housing.

[0148] Analysis and calculation of steering gear housing vibration compliance rate ,in, Indicates the vibration threshold of the steering gear housing, They represent the weight coefficients of the longitudinal vibration amplitude factor and the transverse vibration amplitude factor respectively.

[0149] When the steering gear housing vibration meets the rate When it is less than or equal to the steering gear housing vibration compliance rate setting value, the current steering gear housing vibration state meets the requirements; otherwise, the steering gear housing is in an excessive vibration state and a warning signal is issued.

[0150] It should be noted that the steering gear housing is the integral structure outside the steering gear. Its excessive vibration will cause unstable vibration to the vehicle frame connected to it. Here, the vibration of the steering gear housing is regarded as one of the factors affecting the safe operation of the steering gear. The overall vibration amplitude is obtained by combining the longitudinal vibration amplitude with the lateral vibration amplitude. The steering gear housing vibration compliance rate setting value of the steering gear can be specified according to the industry vibration standard of the corresponding equipment. The specific setting can be based on the operating conditions and industry fixed settings.

[0151] In any of the above schemes, preferably, the specific working process of the target recirculating ball steering gear transmission quality assessment module includes: obtaining the steering screw transmission hidden danger coefficient under the premise that the steering screw transmission safety is qualified ; Under the premise that the initial transmission safety of the steering nut is qualified, obtain the root defect of the transmission gear .

[0152] Obtain the gear transmission wear coefficient that meets the requirements , Passive gear tooth root defect , Lubricating oil performance compliance coefficient .

[0153] By analyzing the formula Get the target steering gear operation quality safety hazard coefficient .

[0154] When the target steering gear running quality safety hazard coefficient > When, among them, Indicates the threshold value of the safety hazard coefficient of the target steering gear operation quality. The current target recirculating ball steering gear is in a safe operating state. Otherwise, it is in a dangerous operating state and issues a warning signal, prompting timely management and maintenance.

[0155] It should be noted that the gear transmission wear coefficient is combined with the gear transmission wear coefficient in the target recirculating ball steering gear transmission quality evaluation module. , Passive gear tooth root defect , Lubricating oil performance compliance coefficient The current target steering gear operation quality safety hazard coefficient can be obtained more comprehensively and objectively by adopting a multi-factor weight distribution method. When formulating the target steering gear operation quality safety hazard coefficient threshold, it is manually set according to the technical personnel in this field for the current steering gear operating conditions and industry regulations. A certain safety factor is reserved when setting specific parameters. The technical personnel in this field combine industry common sense and industry experience data to evaluate and obtain the target steering gear operation quality safety hazard coefficient threshold. The selection of specific values ​​is common knowledge of the technical personnel in this field.

[0156] In any of the above solutions, preferably, the working process of the target recirculating ball steering gear control verification parameter module is as follows:

[0157] Acquire the warning information in the target recirculating ball steering gear operation parameter acquisition and analysis module and the target recirculating ball steering gear transmission quality assessment module.

[0158] According to the specific content of the warning information and the corresponding position of the warning information, the control module sends the instruction to the maintenance personnel.

[0159] The maintenance personnel inspect and maintain the corresponding parts of the target recirculating ball steering gear according to the maintenance information. After the maintenance is completed, the target recirculating ball steering gear operating parameter acquisition and analysis module and the target recirculating ball steering gear transmission quality assessment module are repeatedly run. When all parameters of the target recirculating ball steering gear operating parameter acquisition and analysis module and the target recirculating ball steering gear transmission quality assessment module are qualified, the current target recirculating ball steering gear is in normal operating state.

[0160] Otherwise, continue to repeat the above steps until the target recirculating ball steering gear is in normal operating condition.

[0161] It should be noted that the use of comprehensive evaluation and feedback control after an abnormality occurs can better and more targeted maintenance and control, effectively ensure the effective maintenance and control of steering gear products during the production and testing processes, improve the reliability of the entire control system, and at the same time improve the reliability of steering gear product management and control.

[0162] In summary, it can be seen that the product quality control system is able to obtain the dimensional parameters of each core transmission part of the steering gear before assembly and judge its eligibility; when the parts meet the requirements, the steering gear is assembled, and the analysis and evaluation of various parameters inside the target circulating ball steering gear under the operating state are completed on the test platform, effectively ensuring the analysis of the operating safety of the target circulating ball steering gear under the test operating state, and realizing quantitative analysis by integrating multi-directional core operating parameters, effectively completing the comprehensive supervision and control of the operating state of the target circulating ball steering gear, and ensuring the relative accuracy of the test result analysis of the target circulating ball steering gear; based on the processing of multi-directional parameter data, the transmission state of the target steering gear, the safety hazards of the transmission parts and the crack information can be effectively monitored and acquired, and at the same time The state of the lubricating oil inside the target recirculating ball steering gear and the overall vibration state are analyzed at the same time, effectively ensuring the real-time monitoring of the operating state of the target recirculating ball steering gear. During the monitoring process, early warning information can be sent to abnormal parts in time, effectively improving the effect of safety supervision; this system can lock the corresponding abnormal area according to the abnormal results after analysis and processing of each module, and rely on the control module to complete the sending of effective maintenance information, and effectively realize the inspection and maintenance of the corresponding abnormal position according to the current maintenance information. After maintenance, the analysis and evaluation of each module are cyclically performed to continue to calculate each abnormal parameter. Until all modules are abnormal parameters, the entire target recirculating ball steering gear is currently in a state of operation, effectively achieving the purpose of controlling the product quality of the target recirculating ball steering gear.

[0163] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. For those skilled in the art, any replacement improvements or changes made to the implementation methods of the present invention fall within the protection scope of the present invention.

[0164] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. The steering gear structural component quality test management system based on data processing is characterized by: It includes a steering gear transmission part parameter acquisition module, which is used to obtain relevant parameter information of the transmission parts that constitute the target recirculating ball steering gear before assembly, wherein the transmission parts include a steering screw, a steering nut, a rack, and a gear fan; a target recirculating ball steering gear operation parameter acquisition and analysis module, which is used to obtain relevant parameter information of the target recirculating ball steering gear under the operation state after assembly; a target recirculating ball steering gear transmission quality assessment module, which is used to obtain the processing results of the transmission part parameter acquisition module and the target recirculating ball steering gear operation parameter acquisition and analysis module and complete a comprehensive assessment of the transmission safety and stability of the target recirculating ball steering gear; a target recirculating ball steering gear control and verification parameter module, which is used to reversely control the abnormal parts of the target recirculating ball steering gear according to the assessment results of the target recirculating ball steering gear operation parameter acquisition and analysis module and the target recirculating ball steering gear transmission quality assessment module to achieve the purpose of improving its operation quality; a control module, which is used to receive feedback information and processing results of each module and make relevant instructions; a database, which is used to store all relevant parameter information generated in the system; The specific steps of obtaining relevant parameter information of the assembled target recirculating ball steering gear under the operating state include: obtaining parameter information of the steering screw, the steering nut, and the gear fan inside the target recirculating ball steering gear; obtaining parameter information of the lubricating oil inside the steering gear housing and vibration information of the target steering gear housing under the operating state; The specific working steps of the target recirculating ball steering gear operating parameter acquisition and analysis module include: The steering gear is assembled and connected to the test platform in the operation workshop, and the maximum torque load is applied to the power input end; Intermittently complete the simulated operation of the steering gear under the usage times specified in the national standard on the test platform; Keep the maximum torque load applied to the power input end of the steering gear; Obtaining information on the length of cracks in the grooves of each thread groove transmission surface of the steering screw inside the target steering gear under the maximum torque load operation state through sensor visual analysis; When the length of the slot crack is greater than the slot crack length threshold, the current slot crack is recorded as an excessively long slot crack. , the score is 10 points; when the slot crack length ≤ the slot crack length threshold, the current slot crack is recorded as the standard slot crack , the score is recorded as 3 points; Obtain the shaft wall crack length information at the transmission shafts at both ends of the steering screw; when the shaft wall crack length is greater than the shaft wall crack length threshold, the current shaft wall crack length is recorded as an excessively long shaft wall crack. , the score is recorded as 6 points; when the shaft wall crack length ≤ the shaft wall crack length threshold, the current shaft wall crack length is recorded as the standard shaft wall crack , the score is recorded as 1 point; By analyzing the formula Get the steering screw transmission hidden danger coefficient ; in, is a natural constant, is the number of cracks in the overlong groove, is the number of cracks in the overlong shaft wall; Indicates the weight coefficient corresponding to the crack length in the groove and the crack length in the shaft wall; The steering screw transmission hazard factor Compared with the transmission hidden danger coefficient threshold, when the transmission hidden danger coefficient ≤ the transmission hidden danger coefficient threshold, the transmission safety of the current steering screw is qualified, otherwise it is unqualified; The specific working steps of the target recirculating ball steering gear operating parameter acquisition and analysis module also include: Get the radial runout amplitude of the steering nut in the target steering gear, recorded as ; when > When the nut exceeds 10 times in a steering cycle, it is recorded as excessive nut jump. If the nut exceeds 10 times in a steering cycle, a nut jump abnormal warning signal is issued. By analyzing the formula Get the average radial runout value of the steering nut within a steering cycle ; in, It is the number of radial runouts of the steering nut in one steering cycle; Obtain crack information at the root of each transmission gear tooth on the rack integrally formed at the bottom of the nut; When the transmission gear teeth have cracks on only one side, it is recorded as primary crack transmission gear teeth, and its number is recorded as ; When there are cracks on both sides of the transmission gear teeth, it is recorded as a heavy crack transmission gear tooth, and the number is recorded as ; When there are no cracks on both sides of the transmission gear teeth, it is recorded as a standard crack transmission gear tooth, and its number is recorded as ; in, Indicates The number of the primary crack drive gear teeth, , Indicates The number of the heavy crack transmission gear teeth, ; Indicates The number of the standard crack transmission gear teeth, ; By analyzing the formula Get the gear tooth root defect ; in, They represent the weight proportions of primary crack transmission gear teeth, heavy crack transmission gear teeth, and standard crack transmission gear teeth respectively; When the gear tooth root defect When the transmission gear defect threshold is less than the transmission gear defect threshold, the initial transmission safety of the current steering nut is judged to be qualified, otherwise it is unqualified; When the initial transmission safety of the steering nut fails to meet the standards, a transmission warning signal is issued and the information is uploaded to the database and control module; The specific working steps of the target recirculating ball steering gear operation parameter acquisition and analysis module also include: Obtain the lateral vibration amplitude of each sampling point of the steering gear housing of the target recirculating ball steering gear under running state ,in, Indicates the number of the lateral vibration sampling point of the steering gear housing; Obtain the longitudinal vibration amplitude of each sampling point of the steering gear housing of the target recirculating ball steering gear under running state ,in, Indicates the number of the longitudinal vibration sampling point of the steering gear housing; Analysis and calculation of steering gear housing vibration compliance rate ,in, Indicates the vibration threshold of the steering gear housing, Respectively represent the weight coefficients of the longitudinal vibration amplitude and the transverse vibration amplitude; When the steering gear housing vibration meets the rate When it is less than or equal to the steering gear housing vibration compliance rate setting value, the current steering gear housing vibration state meets the requirements; otherwise, the steering gear housing is in an excessive vibration state and a warning signal is issued.

2. The steering gear structural component quality test management system based on data processing according to claim 1 is characterized in that: The working process of the steering gear transmission part parameter acquisition module includes: The steering screw, steering nut, rack, and gear fan that constitute the target recirculating ball steering gear before assembly are placed separately inside the industrial CT instrument and the three-dimensional imaging information of the steering screw, steering nut, rack, and gear fan is obtained one by one; According to the obtained three-dimensional imaging information of the steering screw, steering nut, rack, and gear fan, the visual modeling software is respectively imported, and the steering screw model diagram, the steering nut model diagram, the rack model diagram, and the gear fan model diagram are modeled in sequence; Obtain the external contour dimension parameters and surface roughness information of the steering screw model diagram in the visual modeling software and compare them with the design parameters. If the external contour dimension parameters and surface roughness information of the steering screw model diagram are within the error range compared with the design parameters, the current steering screw model diagram dimensions meet the design requirements, that is, the steering screw dimensions and machining surface accuracy are qualified, otherwise they are unqualified; When the steering screw size and machining surface accuracy are unqualified, the current steering screw parts are repaired and the above steps are repeated. If they cannot be repaired, they are directly discarded and a new steering screw part is selected to continue the analysis of size and machining surface accuracy until they meet the qualified requirements; Repeat the above steps in the visual modeling software to continue to complete the parameter acquisition and analysis of the steering nut model diagram, the rack model diagram, and the gear sector model diagram until the dimensions and machining surface accuracy of the steering nut model diagram, the rack model diagram, and the gear sector model diagram are qualified; When the steering screw, steering nut, rack and gear sector that make up the steering gear transmission parts are qualified, the steering gear assembly is completed and connected to the steering gear test platform in the operation workshop.

3. The steering gear structural component quality test management system based on data processing according to claim 2 is characterized in that: The specific working steps of the target recirculating ball steering gear operating parameter acquisition and analysis module also include: The eccentricity of the end bearing at the steering arm position integrally formed with the gear sector to obtain the operating state inside the target steering gear is recorded as ; Obtain the average eccentricity of the end bearing within 10 turning cycles ;in, The number of times the inner end bearing runs eccentrically in 10 steering cycles; Get the number of tooth marks on the tooth surface of each passive gear tooth of the gear sector, recorded as ,in, Indicates the number of the passive gear teeth in the gear sector. , Indicates Number of tooth marks in each passive gear tooth, ; Calculation of wear coefficient of gear transmission ,in, Indicates the threshold of the number of tooth marks set by the gear fan. They are the weight proportions of the average eccentricity assessment and the tooth mark quantity assessment of the end bearing respectively; Obtain crack information at the root of each passive gear tooth from the transmission part of the gear fan; When cracks exist on only one side of the passive gear tooth, it is recorded as a primary crack passive gear tooth, and its number is recorded as ; When there are cracks on both sides of the passive gear teeth, it is recorded as a heavy crack passive gear tooth, and its number is recorded as ; When there are no cracks on both sides of the passive gear teeth, it is recorded as a standard crack passive gear tooth, and its number is recorded as ; in, Indicates The number of the primary crack passive gear teeth, , Indicates The number of the passive gear teeth with heavy cracks, ; Indicates The number of the standard crack passive gear teeth, ; Calculate the transmission defect of the current gear fan ,in, They represent the weight proportions of primary crack passive gear teeth, heavy crack passive gear teeth, and standard crack passive gear teeth respectively; When the root defect of the passive gear tooth ≥ the corresponding passive gear tooth root defect threshold, it is judged that the initial transmission safety of the current gear fan is unqualified.

4. The steering gear structural component quality test management system based on data processing according to claim 3 is characterized in that: The specific working steps of the target recirculating ball steering gear operating parameter acquisition and analysis module also include: Obtain the viscosity index of the lubricating oil from the target recirculating ball steering gear , Transparency Index ; The viscosity index of the lubricating oil will be obtained Standard viscosity index values ​​for lubricating oils Compare and calculate the lubricant viscosity deviation ; Obtain the transparency index information of lubricating oil Standard transparency index value of lubricating oil Compare and calculate the lubricant transparency deviation ; By analyzing the formula The lubricant performance compliance coefficient is obtained; where, Indicates the weight ratio of viscosity index and transparency index; Will get and Compare, when If the current lubricant meets the requirements, it can continue to be used; otherwise, an early warning prompts that a new lubricant needs to be replaced.

5. The steering gear structural component quality test management system based on data processing according to claim 4 is characterized in that: The specific working process of the target recirculating ball steering gear transmission quality assessment module includes: Under the premise that the steering screw transmission safety is qualified, obtain the steering screw transmission hidden danger coefficient ; Under the premise that the initial transmission safety of the steering nut is qualified, obtain the root defect of the transmission gear ; Obtain the gear transmission wear coefficient that meets the requirements , Passive gear tooth root defect , Lubricating oil performance compliance coefficient ; By analyzing the formula Get the target steering gear operation quality safety hazard coefficient ; When the target steering gear running quality safety hazard coefficient > When, among them, Indicates the threshold value of the safety hazard coefficient of the target steering gear operation quality. The current target recirculating ball steering gear is in a safe operating state. Otherwise, it is in a dangerous operating state and issues a warning signal, prompting timely management and maintenance.

6. The steering gear structural component quality test management system based on data processing according to claim 5 is characterized in that: The working process of the target recirculating ball steering gear control verification parameter module is as follows: Acquire the warning information in the target recirculating ball steering gear operation parameter acquisition and analysis module and the target recirculating ball steering gear transmission quality assessment module; Send instructions to the control module according to the specific content of the warning information and the corresponding position of the warning information, and the control module sends maintenance information to the maintenance personnel according to the instructions; The maintenance personnel inspect and maintain the corresponding parts of the target recirculating ball steering gear according to the maintenance information. After the maintenance is completed, the target recirculating ball steering gear operation parameter acquisition and analysis module and the target recirculating ball steering gear transmission quality assessment module are repeatedly run. When all parameters of the target recirculating ball steering gear operation parameter acquisition and analysis module and the target recirculating ball steering gear transmission quality assessment module are qualified, the current target recirculating ball steering gear is in a normal operating state. Otherwise, continue to repeat the above steps until the target recirculating ball steering gear is in normal operating condition.

Images