Electric cylinder delivery test bench detection method

Abstract

The invention discloses an electric cylinder delivery test bed detection method. The method comprises the following steps: S1, pretreatment of a test bed and an electric cylinder; s2, performing multi-station parallel core performance detection; s3, detecting a multi-scene coupling environment; and S4, performing automatic data processing and qualification judgment. Through systematic step design, the problems of low efficiency, insufficient scene coverage, poor data linkage and low reliability caused by manual intervention in delivery detection of the electric cylinder are solved. According to the method, the consistency of detection references is ensured through pretreatment of the test bed and the electric cylinder, the detection efficiency is remarkably improved through multi-station parallel core performance detection, the coverage range of detection scenes is expanded through multi-scene coupling environment detection, personal errors are reduced through automatic data processing and qualification judgment, and the reliability of data processing is improved. The features jointly form a complete detection process, and seamless connection from preparation to output is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric cylinder testing, in particular to an electric cylinder delivery test bench detection method. BACKGROUND

[0002] The current electric cylinder delivery detection generally adopts a single-station static detection combined with manual recording method, that is, the test bench measures the core indicators such as the thrust and displacement accuracy of the electric cylinder one by one, and after the detection is completed, the operator manually organizes the data and determines the product qualification. For environmental adaptability detection items, such as high and low temperature or vibration test, the electric cylinder needs to be transferred to a special device for separate detection, resulting in scattered detection process and poor connection. This traditional detection mode has significant defects: first, the detection efficiency is low, since the single-station serial operation mode is adopted, it takes a long time to complete all core performance detection of a single electric cylinder, which is difficult to meet the delivery requirements of large-scale batch production, and is easy to cause production capacity backlog; second, the detection scene coverage is limited, the existing method mainly focuses on static performance indicators in normal temperature environment, and does not include high and low temperature, load and vibration and other multi-factor coupled actual working conditions in the delivery detection category, so that some potential fault hidden dangers, such as the performance degradation of sealing materials in low temperature environment or the structure loosening problem caused by vibration, cannot be effectively identified before delivery, increasing the fault risk after the product is put into use; third, the data acquisition and processing link lacks systematic correlation, the data obtained by the force sensor, displacement sensor and environmental control equipment are stored independently, and the dynamic correlation between the detection parameters, environmental parameters and time axis cannot be established, when the detection result is abnormal, it is difficult to quickly distinguish whether the problem is caused by the defects of the electric cylinder itself or the external environmental interference, the tracing process is complex and time-consuming; finally, there are too many manual intervention links in the detection process, including target position setting, data recording and qualification determination and other key steps, which depend on manual operation, and are easy to cause data deviation due to operation errors or inconsistent standard implementation, especially in batch detection scene, the misjudgment risk caused by human factors increases significantly. The above problems seriously restrict the reliability and efficiency of electric cylinder delivery detection, and a new detection method that can realize multi-station parallel detection, multi-scene coupling simulation, data automatic correlation analysis and judgment is urgently needed. SUMMARY

[0003] Therefore, the present application provides an electric cylinder delivery test bench detection method, which has the advantages of high detection efficiency, comprehensive detection scene coverage, automatic data processing and high reliability.

[0004] To achieve the above purpose, the present application provides the following technical scheme: A kind of electric cylinder factory test bench detection method, comprising the following steps: S1, test bench and electric cylinder pretreatment;S2, multi-station parallel core performance detection;S3, multi-scene coupling environment detection;S4, automatic data processing and qualification determination.

[0005] Preferably, step S1 specifically includes: S11, test bench calibration, ensure that the detection reference of each station is consistent;S12, electric cylinder loading and parameter binding, complete the automatic loading of electric cylinder and the automatic matching with test bench;S13, test piece pre-operation, detect running noise, exclude the interference of initial assembly or lubrication problem on detection result.

[0006] Preferably, step S2 specifically includes: S21, thrust-displacement-speed linkage detection;S22, backlash and stiffness synchronous detection.

[0007] Preferably, step S21 specifically includes: S211, the central control system sends linkage detection instruction to each station, each station test piece synchronously carries out low-speed static detection, overload detection, at the same time, grating ruler real-time acquisition displacement data, force sensor synchronously acquires force data, all data are stored to the database of central control system according to the format of "time stamp-station number-force value-displacement value", establish linkage relationship;S212, each station test piece runs at rated speed, the central control system calculates the actual speed of test piece, at the same time, the acceleration of test piece starting and stopping stage is collected through acceleration sensor.

[0008] Preferably, low-speed static detection and overload detection include: low-speed static detection: test piece is stretched out from the original point on test bench at preset speed;Overload detection: after test piece is stretched out, first preset load is increased, and on the basis of first preset load, load is increased every predetermined time period, and load level is improved.

[0009] Preferably, step S22 specifically includes: S221, test piece is loaded to second preset load, the central control system controls test piece to move forward a preset distance and then move backward, when grating ruler detects force value change for the first time, record reverse displacement, i.e. backlash;S222, test piece output end is fixed, test piece is loaded to third preset load gradually, and the central control system records corresponding displacement deformation amount and automatically calculates stiffness coefficient.

[0010] Preferably, step S3 specifically includes: S31, high-low temperature-load coupling detection;S32, vibration-structure integrity coupling detection.

[0011] Preferably, step S31 specifically comprises: S311, the central control system controls the work station environment simulation module to be heated to a first preset temperature, after constant temperature maintaining for a predetermined time period, the test piece is loaded to a fourth preset load, 5 strokes are run at a rated speed, and positioning accuracy and force fluctuation are detected; S312, the central control system controls the work station environment simulation module to be cooled to a second preset temperature, after constant temperature maintaining for a predetermined time period, the test piece is loaded to the fourth preset load, 5 strokes are run at the rated speed, and the positioning accuracy and the force fluctuation are detected.

[0012] Preferably, step S32 specifically comprises: S321, the work station environment simulation module outputs vibration parameters according to an application scene of the test piece, and vibrates for a preset time period; S322, after the vibration ends, the central control system automatically controls the test piece to run 3 strokes in an empty state, and simultaneously checks whether a connecting piece is loose and whether a shell is cracked through a visual detection module.

[0013] Preferably, step S4 specifically comprises: S41, a data processing flow: the central control system calls a pre-stored detection standard, automatically compares data of each work station, and generates a single-parameter eligibility report; S42, a comprehensive judgment flow: if all detection parameters are qualified, the central control system marks the test piece as qualified, and generates a factory detection report with a unique identifier; if any parameter is unqualified, the central control system marks the test piece as unqualified, locates a fault point, and prompts a rework direction.

[0014] The beneficial effects of the present application are: compared with the prior art, the present application solves the problems of low efficiency, insufficient scene coverage, poor data linkage, and low reliability caused by manual intervention in the factory detection of the electric cylinder through systematic step design. Among them, the test bench and the electric cylinder pretreatment ensure the consistency of the detection reference, the multi-station parallel core performance detection significantly improves the detection efficiency, the multi-scene coupled environment detection expands the coverage range of the detection scene, and the automatic data processing and qualified judgment reduces the human error and improves the reliability of data processing. These features together constitute a complete detection process, realizing seamless connection from preparation to output.

[0015] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a flow chart of the electric cylinder factory test bench detection method of the present application. DETAILED DESCRIPTION

[0017] Embodiments of the present application are described below in the accompanying drawings, of which examples are shown, wherein identical or similar components denoted by identical or similar reference numerals represent identical or similar elements or elements having identical or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and are not understood as limiting the present application.

[0018] In addition, the terms "first", "second", etc. are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0019] Reference is made below to Figure 1 A detection method for an electric cylinder factory test bench in an embodiment of the present application is described.

[0020] A detection method for an electric cylinder factory test bench in an embodiment of the present application is disclosed, comprising the following steps: S1, test bench and electric cylinder pretreatment; S2, multi-station parallel core performance detection; S3, multi-scene coupling environment detection; S4, automatic data processing and qualification determination.

[0021] In practical applications, the test bench and electric cylinder pretreatment can be understood as the process of adjusting the initial state of the test bench and the electric cylinder to be tested, and the purpose is to ensure the consistency and reliability of the subsequent detection. Multi-station parallel core performance detection refers to the process of simultaneously performing key performance index verification of the electric cylinder on multiple detection stations, which mainly serves to improve detection efficiency. Specifically, multi-station parallel detection can be achieved by setting independent detection modules to collect data from each station, or by sharing a central control unit to coordinate detection tasks of each station. In addition, time-division multiplexing can be used to collect and store data from different stations during detection to avoid data conflicts.

[0022] Further, multi-scene coupling environment detection can be understood as a process of simulating multiple actual application scenarios to verify the comprehensive performance of the electric cylinder. The purpose is to cover a wider range of use conditions. For example, high and low temperature detection can be achieved by placing the test piece in a constant temperature oven and adjusting the temperature to the target value; vibration detection can be completed by fixing the test piece on a vibration table and applying vibration signals of different frequencies and amplitudes. These detection methods can effectively simulate actual working conditions and find potential fault points. Automated data processing and qualification determination refers to the process of analyzing and judging detection data through a computer system. Its main role is to reduce manual intervention and improve the consistency of the determination. For example, the data processing flow can compare and analyze the collected data by calling the preset algorithm to generate a single parameter qualification report; the comprehensive judgment flow can comprehensively evaluate all detection parameters through logical judgment rules and output the final judgment result.

[0023] The innovation of the present application is that it solves the problems of low efficiency, insufficient scene coverage, poor data linkage, and low reliability caused by manual intervention in the detection of electric cylinders out of the factory through systematic step design. Among them, the test bench and the electric cylinder pretreatment ensure the consistency of the detection reference, the multi-station parallel core performance detection significantly improves the detection efficiency, the multi-scene coupling environment detection expands the coverage of the detection scene, and the automated data processing and qualification determination reduces human error and improves the reliability of data processing. These features together constitute a complete detection process, realizing seamless connection from preparation to output.

[0024] The working principle of the embodiments of the present application is as follows: a detection method of an electric cylinder factory test bench solves the problems of low detection efficiency, incomplete scene coverage, poor data linkage and low reliability caused by manual intervention through the coordinated operation of four steps. First, in the test bench and electric cylinder pretreatment stage, the test bench is calibrated to ensure the consistency of the detection reference of each station, and the automatic feeding and parameter binding of the electric cylinder are completed, and at the same time, the interference of initial assembly or lubrication problem on the subsequent detection result is excluded through pre-running of the test piece, thereby laying a reliable foundation for the entire detection process. Further, in the multi-station parallel core performance detection stage, multiple stations simultaneously perform detection tasks of key performance such as thrust, displacement and speed, significantly shortening the detection cycle of a single electric cylinder, and at the same time, through real-time acquisition and storage of multi-sensor data, the linkage relationship between detection parameters is established, avoiding the problem of data fragmentation. Specifically, in the multi-scene coupling environment detection stage, the actual working condition conditions of multiple factors such as high and low temperature and vibration are simulated, the performance of the electric cylinder in complex environment is comprehensively verified, the limitations of single environment detection are made up, potential fault points are exposed in advance, thereby enhancing the reliability of the product in actual application. Finally, in the automatic data processing and qualification determination stage, the pre-stored detection standard is called by the central control system, the data of each station is automatically compared, the single parameter qualification report is generated, and the final determination is completed by comprehensively considering all detection parameters, eliminating the subjectivity of manual recording and judgment, ensuring that the data traceability is clear and the determination standard is consistent. Therefore, the above four steps closely cooperate, from the front-end preparation to the back-end output to form a complete detection chain, effectively improving the overall efficiency and reliability of the electric cylinder factory detection.

[0025] In some embodiments, step S1 specifically includes: S11, test bench calibration, ensuring the consistency of the detection reference of each station; S12, electric cylinder feeding and parameter binding, completing the automatic feeding of the electric cylinder and the automatic matching with the test bench; S13, test piece pre-running, detecting running noise, and excluding the interference of initial assembly or lubrication problem on the detection result.

[0026] The test bench calibration refers to ensuring the data comparability of key equipment such as force sensors and displacement sensors in the detection initial stage by unifying the reference of sensors of each station. It can be realized by pre-calibration of multi-station force sensors, grating displacement sensors and environmental simulation modules, aiming to avoid the problem that multi-source data cannot be analyzed in linkage due to the deviation between stations. The electric cylinder loading and parameter binding refers to fixing the electric cylinder to be detected to the test bench station by means of automatic loading mechanism and identification recognition technology, and automatically matching the parameters and the pre-stored detection template. It can be realized by reading the unique identification of the test piece by an RFID reader and automatically matching the detection parameter template, aiming to eliminate the risk of position setting error or data omission when manually inputting parameters. The test piece pre-running refers to actively identifying the abnormality of guide rail cleanliness or lubrication state by running under no load and monitoring the running noise in real time. It can be realized by detecting the running noise by a noise sensor and triggering an alarm prompt when the preset threshold is exceeded, aiming to prevent false data fluctuations in formal detection caused by initial assembly defects or insufficient lubrication.

[0027] Specifically, the above steps effectively solve the core defects of non-uniform detection reference, easy-to-make mistakes of manual operation and non-elimination of initial interference factors by systematizing and refining the pretreatment link. The test bench calibration provides a reliable basis for the data association requirements of time stamp and station number in subsequent core performance detection; the electric cylinder loading and parameter binding significantly improve the continuity and data traceability of the detection process; and the test piece pre-running guarantees the purity and accuracy of the measurement of core performance parameters. On this basis, the joint action of these steps lays a foundation for efficient and accurate multi-station parallel detection, thereby meeting the needs of batch factory detection.

[0028] In some embodiments, step S2 specifically includes: S21, thrust-displacement-speed linkage detection; and S22, backlash and stiffness synchronous detection.

[0029] The thrust-displacement-speed linkage detection refers to synchronously collecting thrust, displacement and speed parameters, and establishing a dynamic correlation between the three parameters according to the time stamp. The backlash and stiffness synchronous detection can be understood as integrating the backlash measurement and the stiffness calculation in the same detection sequence, using displacement reverse operation and step-by-step load change in the loading process to obtain the two key parameters in a single continuous action.

[0030] Specifically, the above scheme effectively solves the problems of data dispersion and process redundancy in core performance detection by defining the specific implementation of thrust-displacement-speed linkage detection and backlash and stiffness synchronous detection. In thrust-displacement-speed linkage detection, after the central control system sends detection instructions to each station, the test piece runs in low-speed static detection and overload detection mode, while the grating ruler collects displacement data in real time, the force sensor synchronously collects force data, and all data are stored in a pre-set format, ensuring the efficiency of the detection process and the traceability of the data. In addition, in the synchronous detection of backlash and stiffness, after the test piece is loaded to the pre-set load, the backlash is recorded by moving forward and then moving backward, and the displacement deformation is recorded by step loading to automatically calculate the stiffness coefficient, which eliminates the repeated station adjustment and test piece reset steps required by traditional separate detection. On this basis, the above scheme also achieves the efficiency target of multi-station parallel detection, ensuring the compactness of the detection steps and the coherence of the data, thereby improving the accuracy and efficiency of the overall detection.

[0031] Through the above technical scheme, not only the problems of not realizing synchronous collection and correlation analysis of core performance parameters are solved, but also the process of backlash and stiffness detection is optimized, the detection cycle is significantly shortened, the internal logical consistency between parameters is ensured, and additional errors introduced by multiple operations are avoided.

[0032] In some embodiments, step S21 specifically includes: S211, the central control system sends linkage detection instructions to each station, and the test pieces in each station perform low-speed static detection and overload detection simultaneously; at the same time, the grating ruler collects displacement data in real time, and the force sensor synchronously collects force data, all data are stored in the database of the central control system in the format of "time stamp-station number-force value-displacement value", and a linkage relationship is established; S212, the test pieces in each station run at a rated speed, the central control system calculates the actual speed of the test pieces, and at the same time, the acceleration sensor collects the acceleration of the test pieces at the start and stop stages.

[0033] The central control system refers to an automatic control unit with multi-task scheduling capability, which can be implemented by an industrial computer or an embedded controller, and the purpose is to unify and coordinate the detection processes of multiple stations, ensuring accurate distribution and execution of detection instructions. The grating ruler is a high-precision displacement measuring device, which can be implemented by an incremental grating ruler or an absolute grating ruler, and the purpose is to capture the small displacement changes of the test piece in the detection process in real time. The force sensor is a device for measuring thrust, which can be implemented by a strain gauge sensor or a piezoelectric sensor, and the purpose is to synchronously obtain the force value changes of the test piece under different load conditions. The time stamp refers to a time marker recording the time of data collection, which can be generated by a system clock or a high-precision timing module, and the purpose is to provide a time reference for subsequent data analysis.

[0034] Specifically, the central control system ensures that all stations start the detection process at the same time by sending linkage detection instructions to each station, thereby eliminating the timing deviation caused by instruction delays. On this basis, the test pieces in each station are synchronized to perform low-speed static detection and overload detection, and through parallel execution of multi-stage load testing, dynamic correlation data of thrust and displacement are obtained under the same environmental conditions, avoiding the interference of temperature fluctuations or mechanical state changes that may be introduced by time-sharing detection. The grating ruler and force sensor are connected through a synchronization mechanism, so that the displacement data and force value data strictly correspond in the time dimension, ensuring that each data point reflects the complete state of the same physical transient. All data are stored in the database in the format of "time stamp-station number-force value-displacement value". This structured design takes time information as the core index and station number as the sample identifier, so that the data of different sensors can be automatically aligned along the time axis to form a dynamic correlation network across stations and parameters. When the detection results deviate, the time stamp can be used to quickly trace back to the force-displacement combination at a specific time point to distinguish whether it is an internal defect of the electric cylinder or a detection system error. In addition, the test pieces in each station run at the rated speed, directly reproducing the motion state under the actual working condition of the electric cylinder, and the central control system automatically derives the speed value based on the passing time of the fixed interval detection points at the midpoint of the stroke, avoiding the subjective deviation introduced by manual timing or estimation. The acceleration sensor collects the acceleration during the start and stop stages, supplementing the transient details of the speed detection, which helps to identify performance defects caused by motor response delay or mechanical inertia, and improves the dynamic performance evaluation dimension.

[0035] Through the above technical solutions, timing unification and data linkage in multi-parameter detection are realized, which significantly improves the detection efficiency and accuracy, and provides a reliable technical foundation for accurate tracing of performance deviations.

[0036] In some embodiments, the low-speed static detection and overload detection include: low-speed static detection: the test piece is stretched out from the origin on the test bench at a preset speed; overload detection: after the test piece is stretched out, the load is increased to a first preset load, and on the basis of the first preset load, the load is increased every predetermined time period to improve the load level.

[0037] The preset speed refers to a speed parameter preset by the system, which can be realized by a fixed value or a proportional value based on the rated speed of the electric cylinder, aiming to avoid displacement measurement errors caused by manual input speed deviation. The origin serves as the starting reference, which can be understood as a fixed reference position on the test bench, aiming to eliminate the influence of inconsistent position setting on the push-pull displacement data linkage. The first preset load refers to the initial load value set according to the rated thrust of the electric cylinder, which can be realized by the calibration value of the force sensor or based on the percentage of the rated thrust, aiming to ensure that the starting point of load loading has a clear standard. The predetermined time period refers to a fixed time interval, which can be realized by a unified time unit or a dynamically adjusted time period based on detection requirements, aiming to ensure the timing consistency of data acquisition.

[0038] Specifically, the above scheme solves the risk of manual intervention caused by ambiguous detection process by standardizing the operation details of low-speed static detection and overload detection. In low-speed static detection, the test piece is stretched out from the origin at a preset speed, ensuring that the speed parameter is preset by the system rather than manually input, thereby avoiding displacement measurement errors caused by manual speed setting deviation. At the same time, the fixed origin as the starting reference eliminates the influence of inconsistent position setting on the push-pull displacement data linkage. In overload detection, the test piece is stretched out and the load is increased to the first preset load, and the load level is gradually increased by a predetermined time period based on the preset load, realizing the step-by-step progression of load change. This gradual loading mode simulates the scenario of gradual load change in the actual working condition of the electric cylinder, which can detect the performance stability under different load levels and prevent mechanical damage to the test piece caused by instantaneous overload. In addition, the fixed interval of the predetermined time period ensures the timing consistency of data acquisition, providing a reliable time axis reference for the linkage analysis of force and displacement. Overall, these features convert ambiguous detection requirements into executable standardized steps, reduce human operation variables from the source, and ensure the integrity of the detection data and the objectivity of the judgment basis.

[0039] Through the above technical scheme, the speed, load and time parameters in the detection process are standardized, avoiding problems such as input error of target position, equipment damage or data omission caused by sudden load change, thereby reducing the risk of inconsistent detection standards and misjudgment. At the same time, the scheme is combined with multi-station parallel core performance detection, further improving the detection efficiency and data reliability, providing strong support for the efficiency, automation and precision of electric cylinder factory detection.

[0040] In some embodiments, step S22 specifically comprises: S221, loading the test piece to a second preset load, the central control system controls the test piece to move forward by a preset distance and then move backward, when the grating ruler first detects a change in force value, the amount of reverse displacement is recorded, i.e. the backlash; S222, fixing the output end of the test piece, loading the test piece to a third preset load step by step, the central control system records the corresponding displacement deformation and automatically calculates the stiffness coefficient.

[0041] In the above technical scheme, the second preset load refers to a specific load value set for measuring the backlash in the detection process, which can be determined by a certain proportion of the rated thrust of the electric cylinder, for example, 0.3 times the rated thrust. In practical application, the preset distance refers to the displacement amount that the test piece needs to reach when moving forward, which can be accurately set by the central control system, usually a short distance of micrometer level. The third preset load refers to the maximum load value gradually applied to obtain the displacement deformation in the stiffness detection, which can be adjusted according to the design parameters of the electric cylinder, for example, 0.8 times the rated thrust. In addition, the automatic calculation function of the stiffness coefficient is realized by the algorithm built in the central control system, which can effectively avoid the errors caused by manual calculation.

[0042] Specifically, the above technical scheme integrates the backlash detection and the stiffness detection into a coherent detection sequence, which significantly improves the detection efficiency. First, in the backlash detection stage, after the test piece is loaded to the second preset load, the central control system drives the test piece to move forward by a preset distance and then move backward. In this process, the grating ruler monitors the change in force value in real time, and records the amount of reverse displacement when it first detects a change in force value, which directly reflects the backlash characteristics of the test piece under load conditions. Then, in the stiffness detection stage, the output end of the test piece is fixed to provide a rigid reference, the central control system gradually loads to the third preset load, and simultaneously records the displacement deformation under each load level. Through these data, the system automatically calculates the stiffness coefficient, thereby completing the measurement of two key parameters. The above method not only reduces the time of reconfiguring the equipment, but also improves the continuity and throughput of the detection by sharing the loading and moving control steps, which meets the efficiency requirements of batch factory detection.

[0043] Through the above technical scheme, the backlash and stiffness detection can be efficiently completed in a unified process, which significantly shortens the overall detection time, while ensuring the accuracy and reliability of the measurement results.

[0044] In some embodiments, step S3 specifically comprises: S31, high-low temperature-load coupling detection; S32, vibration-structure integrity coupling detection.

[0045] The high-low temperature-load coupling detection refers to a detection mode in which a load is applied synchronously during temperature change, which can be realized in the manner that the work station environment simulation module is controlled by the central control system to be heated or cooled to a preset temperature, then a rated load is applied and multiple strokes are run, aiming to reproduce the situation that temperature fluctuation and load change occur simultaneously in actual working conditions, so that faults that cannot be found by single test can be effectively detected. The vibration-structure integrity coupling detection can be understood as a detection mode in which structure integrity inspection is automatically performed after vibration, which can be realized by automatically identifying the state of the connecting piece and the shell through the visual detection module combined with image algorithm, aiming to avoid the delay and subjectivity of manual inspection, and to ensure that potential problems can be identified in time and accurately.

[0046] Specifically, the above scheme solves the problem of incomplete scene coverage in multi-scene coupling environment detection by explicitly specifying the specific implementation of high-low temperature-load coupling detection and vibration-structure integrity coupling detection. In the high-low temperature-load coupling detection, first, the work station environment simulation module is controlled by the central control system to be heated to a first preset temperature, and then loaded to a fourth preset load after constant temperature is maintained for a predetermined period of time, and the test piece is run at a rated speed for multiple strokes to detect positioning accuracy and force fluctuation. Then, the temperature is lowered to a second preset temperature and the same detection process is repeated. The particularity of this design is that it can simulate the complex scene of interaction between high and low temperature and load in actual working conditions, so that problems such as failure of sealing element at low temperature or degradation of material performance at high temperature can be effectively detected. In the vibration-structure integrity coupling detection, the work station environment simulation module outputs vibration parameters according to the application scene of the test piece and vibrates for a predetermined period of time. After vibration, the central control system automatically controls the test piece to run multiple strokes at no load, and at the same time, the visual detection module checks whether the connecting piece is loose and whether the shell is cracked. The advantage of this design is that it realizes real-time association of vibration and structure state, ensuring that potential problems such as bolt loosening or shell cracking after vibration can be quickly identified. In addition, the above scheme is combined with pretreatment steps such as test bench calibration and electric cylinder feeding and parameter binding, further improving the detection efficiency and data reliability, thereby fully meeting the batch delivery demand and reducing the risk of after-sales failure.

[0047] In some embodiments, step S31 specifically includes: S311, the central control system controls the work station environment simulation module to be heated to a first preset temperature, and after constant temperature is maintained for a predetermined period of time, the test piece is loaded to a fourth preset load, and run at a rated speed for 5 strokes to detect positioning accuracy and force fluctuation; S312, the central control system controls the work station environment simulation module to be cooled to a second preset temperature, and after constant temperature is maintained for a predetermined period of time, the test piece is loaded to a fourth preset load, and run at a rated speed for 5 strokes to detect positioning accuracy and force fluctuation.

[0048] The work station environment simulation module refers to a device capable of simulating high and low temperature environments, which can be implemented by using temperature control boxes or thermoelectric refrigeration pieces, etc., and the purpose is to provide stable temperature conditions for the test piece. The first preset temperature and the second preset temperature refer to the high temperature and low temperature values set according to the actual application scene, which can be adjusted according to the industrial or military standard, and the purpose is to cover the performance of the electric cylinder under extreme temperature. The fourth preset load refers to the dynamic load value applied to the test piece, and the purpose is to verify the stability of the test piece under load conditions.

[0049] Specifically, the above-mentioned scheme solves the problem of incomplete detection in the temperature and load dynamic interaction scene by systematically designing the high and low temperature-load coupling detection process. First, the central control system sends instructions to the work station environment simulation module to raise the temperature to the first preset temperature, and after maintaining the constant temperature for a predetermined period of time, it ensures that the internal temperature of the test piece is fully balanced, thereby avoiding the interference of thermal inertia on the detection results. Subsequently, the test piece is loaded to the fourth preset load and runs 5 strokes at the rated speed, and the performance stability under dynamic load is verified through multiple cycles, rather than a single static test, thereby capturing subtle changes in positioning accuracy and force fluctuation. This linkage mechanism ensures high consistency between the detection process and the actual application scene, which can effectively expose problems such as lubrication failure or material expansion caused by high temperature.

[0050] On this basis, the central control system further controls the work station environment simulation module to lower the temperature to the second preset temperature, and after maintaining the constant temperature for a predetermined period of time, it makes the test piece fully adapt to the low temperature environment, avoiding misjudgment caused by cold shrinkage effect. Subsequently, the test piece is loaded to the fourth preset load and runs 5 strokes, and the structural integrity under low temperature load is verified through repeated dynamic testing. This unified scheduling of temperature lowering, constant temperature and load application sequence not only simulates the gradual change process of outdoor low temperature working condition, but also enhances the detection ability of hidden faults such as seal failure or material embrittlement through stroke cycle.

[0051] Through the above technical scheme, the electric cylinder is comprehensively detected in the high and low temperature and load coupling scene, which fundamentally makes up for the defects of temperature and load isolated test in traditional detection, and significantly improves the authenticity and reliability of the detection results.

[0052] In some embodiments, step S32 specifically includes: S321, the work station environment simulation module outputs vibration parameters according to the application scene of the test piece, and vibrates for a preset time period; S322, after the vibration is completed, the central control system automatically controls the test piece to run 3 strokes under no load, and simultaneously checks whether the connecting piece is loose and whether the shell is cracked through the visual detection module.

[0053] The preset time period refers to a reasonable time range set for sufficient exposure of potential defects, which can be determined by experiments or empirical data, and the purpose is to prevent problems from being missed due to insufficient time. The visual detection module refers to an automated detection device with image acquisition and processing functions, which can be implemented by using an industrial camera combined with an image recognition algorithm or a laser scanning system, and the purpose is to eliminate subjective bias and efficiency bottlenecks of manual visual inspection.

[0054] Specifically, the scheme first outputs customized vibration parameters according to the specific application scene of the test piece through the work station environment simulation module, which ensures that the vibration test conditions can cover diversified working conditions and avoid the limitations of general vibration tests. After completing the set vibration time period, the central control system automatically triggers the test piece to perform three complete strokes of idle running. This dynamic running mechanism can activate structural abnormalities in the moving state, because loose parts or cracks are more likely to produce detectable displacement changes in reciprocating motion. Subsequently, the visual detection module automatically performs non-contact inspection of the connector looseness and the shell crack, directly targeting high-frequency fault points after vibration, and realizes precise verification of the safety of key structures. The entire detection process effectively solves the problems of low efficiency and high misjudgment rate of manual inspection through automation, significantly improves the reliability and traceability of detection, and especially shows obvious advantages in batch detection scenarios.

[0055] In some embodiments, step S4 specifically includes: S41, data processing flow: the central control system calls the pre-stored detection standard, automatically compares the data of each station, and generates a "single parameter qualification report"; S42, comprehensive judgment flow: if all detection parameters are qualified, the central control system will mark the test piece as "qualified" and generate a factory detection report with a unique identifier; if any parameter is unqualified, the central control system will mark the test piece as "unqualified" and locate the fault point, prompting the rework direction.

[0056] The pre-stored detection standard refers to a set of technical indicators pre-set according to different types of electric cylinders, which can be stored and maintained through a database management system, aiming to ensure the consistency and accuracy of the detection basis. The single parameter qualification report refers to the evaluation result generated independently for each detection parameter, which can be presented in a structured data format such as JSON or XML, and the purpose is to provide clear data support for subsequent comprehensive judgment.

[0057] Specifically, the scheme realizes full-process automation from data acquisition to final determination through deep integration of the central control system and intelligent decision mechanism. In the data processing stage, the central control system calls the stored detection standard according to the preset logic, and performs real-time comparison and analysis on the detection data from each station, and automatically generates a single-parameter qualification report. This process not only avoids errors that may be caused by manual intervention, but also significantly improves the data processing efficiency. In the comprehensive determination link, the system comprehensively evaluates all detection parameters based on the results of the single-parameter report through the built-in algorithm. When all parameters meet the standard, the system automatically marks the test piece as qualified, and generates a unique factory detection report containing information such as timestamp, station number, etc.; if any parameter is found to be abnormal, the system can not only accurately mark the unqualified state, but also quickly locate the fault point and give specific rework suggestions. This intelligent processing method effectively solves the problems of high misjudgment rate and difficult fault tracing caused by manual operation in traditional methods, and significantly improves the reliability and traceability of the detection results.

[0058] Through the above technical scheme, full-process automation from data processing to final determination is realized, not only eliminating the uncertainty caused by manual operation, but also establishing a complete data traceability system, making the detection process more standardized and efficient.

[0059] Other configurations and operations of the detection method of the electric cylinder factory test bench according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0060] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0061] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A method for testing electric cylinders on a factory test bench, characterized in that, Includes the following steps: S1. Pre-treatment of the test bench and electric cylinder; S2, Multi-station parallel core performance testing; S3, Multi-scene Coupled Environment Detection; S4. Automated data processing and qualification assessment.

2. The testing method for electric cylinders on the factory test bench according to claim 1, characterized in that, Step S1 specifically includes: S11. Test bench calibration to ensure consistent testing standards at each workstation; S12. Electric cylinder feeding and parameter binding are completed to achieve automatic feeding of electric cylinder and automatic matching with test bench; S13. Pre-run the test piece to detect running noise and eliminate interference from initial assembly or lubrication issues on the test results.

3. The testing method for electric cylinders on the factory test bench according to claim 1, characterized in that, Step S2 specifically includes: S21, Thrust-Displacement-Velocity Linkage Detection; S22. Backlash and stiffness are detected simultaneously.

4. The testing method for electric cylinders on the factory test bench according to claim 3, characterized in that, Step S21 specifically includes: S211. The central control system sends linkage detection commands to each workstation. The specimens at each workstation simultaneously undergo low-speed static detection and overload detection. At the same time, the grating ruler collects displacement data in real time, and the force sensor collects force data synchronously. All data are stored in the database of the central control system in the format of "timestamp-workstation number-force value-displacement value" to establish linkage relationship. S212. The test specimens at each station run at the rated speed. The central control system calculates the actual speed of the test specimens. At the same time, the acceleration of the test specimens during the start-up and stop phases is collected by the acceleration sensor.

5. The testing method for electric cylinders on the factory test bench according to claim 4, characterized in that, Low-speed static testing and overload testing include: Low-speed static testing: The specimen extends from the origin of the test bench at a preset speed; Overload detection: After the specimen extends, the load is increased to the first preset load, and based on the first preset load, the load is increased at predetermined time intervals to improve the load level.

6. The testing method for electric cylinders on the factory test bench according to claim 3, characterized in that, Step S22 specifically includes: S221. When the specimen is loaded to the second preset load, the central control system controls the specimen to move forward a preset distance and then move in the reverse direction. When the grating ruler detects the change in force value for the first time, it records the amount of reverse displacement, i.e., the back clearance. S222. The specimen output end is fixed, and the specimen is loaded step by step to the third preset load. The central control system records the corresponding displacement deformation and automatically calculates the stiffness coefficient.

7. The testing method for electric cylinders on the factory test bench according to claim 1, characterized in that, Step S3 specifically includes: S31, High and low temperature-load coupling detection; S32, Vibration-Structural Integrity Coupled Detection.

8. The testing method for electric cylinders on the factory test bench according to claim 7, characterized in that, Step S31 specifically includes: S311. The central control system controls the station environment simulation module to heat up to the first preset temperature. After maintaining the temperature for a predetermined time period, the specimen is loaded to the fourth preset load and runs 5 strokes at the rated speed to detect the positioning accuracy and force fluctuation. S312, the central control system controls the station environment simulation module to cool down to the second preset temperature, and after maintaining the constant temperature for a predetermined period of time, the specimen is loaded to the fourth preset load and runs 5 strokes at the rated speed to detect positioning accuracy and force fluctuation.

9. The testing method for electric cylinders on the factory test bench according to claim 7, characterized in that, Step S32 specifically includes: S321, The workstation environment simulation module outputs vibration parameters according to the application scenario of the specimen, and the vibration is preset for a time period; S322. After the vibration ends, the central control system automatically controls the specimen to run unloaded for 3 strokes, and at the same time checks whether the connecting parts are loose and whether the shell is cracked through the visual inspection module.

10. The testing method for electric cylinders on a factory test bench according to claim 1, characterized in that, Step S4 specifically includes: S41. Data processing flow: The central control system calls the pre-stored testing standards, automatically compares the data of each workstation, and generates a "single parameter conformity report". S42. Comprehensive Judgment Process: If all test parameters are qualified, the central control system will mark the test piece as "qualified" and generate a factory test report with a unique identifier; if any parameter is unqualified, the central control system will mark the test piece as "unqualified", locate the fault point, and indicate the direction of rework.

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