Accurate adjustment in-place confirmation system and confirmation method

Abstract

The invention relates to the technical field of nut adjustment, in particular to an accurate adjustment in-place confirmation system and method. Comprising a parameter acquisition unit, a state judgment unit, a strategy making unit and an optimization unit, a specific adjusting strategy is formulated through the strategy formulating unit, a specific nut tightness degree adjusting strategy is formulated according to an adjusting target, the tightness degree of the nut is adjusted in time according to temperature changes, the problems of loose connection, too tight connection, leakage and the like caused by the temperature can be prevented, equipment faults and maintenance cost are reduced, and the working efficiency is improved. The overall performance of equipment can be improved by keeping the proper connection state of the bolt and the nut, it is ensured that the equipment can normally operate at different temperatures, the production efficiency and the product quality are improved, and it is ensured that the equipment can normally operate at different temperatures, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of nut adjustment, and in particular to a precise adjustment confirmation system and method. Background Art

[0002] In modern industrial production and the assembly of various equipment, bolt and nut connection is an extremely common and critical connection method. Existing bolt and nut materials are diverse. In practical applications, traditional bolt and nut connections often face connection reliability issues caused by changes in environmental factors, among which temperature change is an important influencing factor; For applications using plastic bolts and nuts, the impact of temperature is particularly significant. Plastic materials will exhibit different physical and mechanical properties under different temperature conditions. For example, in low temperature environments, plastic materials tend to shrink, which may cause the bolt and nut connection to become loose, reduce the reliability of the connection, and may even cause equipment failure or safety accidents. In high temperature environments, plastic materials may expand and soften, causing the bolt and nut connection to be too tight, increasing the stress of the bolts, and also posing risks to the normal operation of the equipment. Traditional methods often rely on empirical judgments or fixed adjustment rules, and lack the ability to monitor temperature changes in real time and adaptively adjust.

[0003] Therefore, a precise adjustment confirmation system and confirmation method are proposed. Summary of the invention

[0004] The object of the present invention is to provide a precise adjustment in place confirmation system and confirmation method to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, one of the objectives of the present invention is to provide a precise adjustment confirmation system, including a parameter acquisition unit, a state judgment unit, a strategy formulation unit and an optimization unit; The parameter acquisition unit is used to acquire material parameters of bolts and nuts; The state judgment unit is used to collect the force data of the bolt and judge the tightening state of the nut; The strategy formulation unit is used to monitor the temperature changes of the working environment, classify and analyze according to different temperature intervals, determine the range to which the current temperature belongs, and formulate a nut adjustment strategy based on the results of temperature analysis and nut status evaluation; The optimization unit is used to obtain all data during the adjustment process, including temperature, stress conditions, and adjustment strategies, and record them for subsequent analysis and optimization.

[0006] As a further improvement of the present technical solution, the parameter acquisition unit acquires material parameters of the bolts and nuts, and the material parameters include material properties, size specifications, and standard tightening torque.

[0007] As a further improvement of the technical solution, the state judgment unit includes a data acquisition module and a judgment module; The data acquisition module determines the standard tightening torque value of the nut according to the material parameters, size specifications and working requirements of the bolts and nuts, continuously collects the force data of the bolts through the force sensor, and transmits it to the central control system. The frequency of data acquisition should be set according to actual needs to ensure that the force changes can be captured in time; The determination module is used to compare the standard tightening torque value in the data acquisition module with the current tightening torque value in real time to determine the tightening state of the nut.

[0008] As a further improvement of the technical solution, the strategy formulation unit includes a temperature acquisition module and an adjustment strategy module; The temperature acquisition module uses a temperature sensor to obtain the specific temperature of the working environment; The adjustment strategy module divides the temperature intervals, matches the corresponding temperature intervals using an interval judgment method according to the temperature acquired by the temperature acquisition module, and formulates the tightness adjustment strategy of the nut according to different temperature intervals.

[0009] As a further improvement of the technical solution, the algorithm formula for the nut tightening torque in the adjustment strategy module is as follows: Assume the initial temperature is , the current temperature is ; The standard tightening torque of the bolt at the initial temperature is ; The thermal expansion coefficient of plastic material is ; The effective length of the bolt is ; Temperature change equal ; Change in bolt length due to temperature change ; The tightening torque is proportional to the tensile stress of the bolt, which in turn is related to the elongation of the bolt; Let the proportionality factor be , then the adjusted tightening torque It can be expressed as: ; Among them, the proportionality coefficient K is obtained through experiments, which reflects the sensitivity of the tightening torque to the change of bolt length.

[0010] As a further improvement of the technical solution, the adjustment strategy module formulates the nut tightness adjustment strategy specifically including the following steps: Data collection: Collect a large amount of relevant data on bolts and nuts at different temperatures, including temperature values, current tightening torque, material properties, bolt size, nut size, etc. as input features; Data preprocessing: remove outliers and erroneous data to ensure data accuracy, normalize input features and output targets to keep their numerical ranges within a smaller range, and divide data into training sets, validation sets, and test sets; Model training: Randomly initialize the weights and biases of the neural network, select a loss function suitable for the numerical prediction problem, input the training set data into the neural network, calculate the output through forward propagation, and obtain the tightening torque adjustment size corresponding to different temperatures; Model application: Get the specific temperature in the temperature acquisition module and adjust the tightening torque value.

[0011] As a further improvement of the technical solution, the optimization unit includes a recording module and a timestamp module; The recording module is used to record the temperature values ​​at different time points during the adjustment process, including the ambient temperature and the surface temperature of the bolts and nuts, and to record the changes in the axial force and torque of the bolts to reflect the stress state of the nuts; The timestamp module is used to record the strategy adopted each time the nut is adjusted, including the direction and amount of adjustment, and to add a timestamp to each data record.

[0012] As a further improvement of the present technical solution, the optimization unit also includes an adjustment module, which is used to regularly analyze the recorded data, understand the performance changes and adjustment effects of the nut at different temperatures, and optimize the nut adjustment strategy based on the results of the data analysis.

[0013] A second object of the present invention is to provide a method for confirming accurate adjustment in place, comprising the accurate adjustment in place confirmation system described in any one of the above, comprising the following steps: S1. Obtain material parameters of bolts and nuts; S2, collecting the force data of the bolt and determining the tightening state of the nut; S3. Monitor the temperature changes in the working environment, classify and analyze according to different temperature intervals, determine the range to which the current temperature belongs, and formulate a nut adjustment strategy based on the results of temperature analysis and nut status assessment; S4. Obtain all data during the adjustment process, including temperature, stress conditions, and adjustment strategies, and record them for subsequent analysis and optimization.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the precise adjustment confirmation system, a specific adjustment strategy is formulated through the strategy formulation unit: According to the adjustment target, a specific nut tightness adjustment strategy is formulated, and the tightness of the nut is adjusted in time according to the temperature change, which can prevent problems such as loose connection, overtightening, leakage, etc. caused by temperature, reduce equipment failure and maintenance costs, and maintain the appropriate connection state of bolts and nuts to improve the overall performance of the equipment, ensure that the equipment can operate normally at different temperatures, improve production efficiency and product quality, and ensure that the equipment can operate normally at different temperatures, improve production efficiency and product quality.

[0015] 2. In the precise adjustment confirmation system, the state judgment unit monitors the data in real time to understand the force changes of bolts and nuts in different working stages. Through automated data collection and analysis, the workload and error rate of manual inspection can be reduced, and production efficiency can be improved. At the same time, the bolts and nuts are at the optimal tightening torque during adaptation, which improves the stability of adaptation.

[0016] 3. In the precise adjustment confirmation system, the adjustment module compares the stress of the bolts before and after adjustment, the stability of the nuts and other indicators to determine whether the adjustment strategy has achieved the expected goal, and determines the aspects that need to be optimized based on the data analysis results. For example, if it is found that the nut adjustment amount is too large or too small in a certain temperature range, the adjustment strategy for that range can be adjusted. By regularly analyzing the data and optimizing the adjustment strategy, the nuts can always be kept in a suitable tightening state at different temperatures, improving the reliability of the bolt and nut connection and reducing equipment failures and safety hazards caused by looseness or overtightening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structural principle diagram of the present invention; Figure 2 It is a flowchart of the overall process of the present invention.

[0018] 100, parameter acquisition unit; 200, state judgment unit; 300, strategy formulation unit; 400, optimization unit. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] One of the purposes of the present invention is to provide a precise adjustment confirmation system. Figure 1-Figure 2As shown, it includes a parameter acquisition unit 100, a state judgment unit 200, a strategy formulation unit 300 and an optimization unit 400; The parameter acquisition unit 100 is used to acquire material parameters of bolts and nuts; In order to achieve the best state when the bolts and nuts are matched and improve the stability of the equipment, the material parameters of the bolts and nuts are obtained in the parameter acquisition unit 100. The material parameters include material properties, size specifications, and standard tightening torques. The actual dimensions of the bolts and nuts are measured using measuring tools, including diameter, length, thread specifications, etc. Ensure the accuracy of the measurement to obtain accurate dimensional data, and conduct a tightening torque test experiment. By using a torque wrench to gradually increase the tightening torque, while monitoring the connection status and stress conditions of the bolts and nuts, find a suitable tightening torque range that can ensure the reliability of the connection without causing material damage, determine the optimal tightening torque of the bolts and nuts, ensure that the connection is always in the best state, and improve the stability and safety of the equipment.

[0021] The state judgment unit 200 is used to collect the force data of the bolt and judge the tightening state of the nut; In order to ensure the reliability of the connection and avoid problems such as connection failure, leakage or equipment damage caused by looseness or over-tightening, the state judgment unit 200 includes a data acquisition module and a judgment module; The data acquisition module determines the standard tightening torque value of the nut according to the material parameters, size specifications and working requirements of the bolts and nuts, continuously collects the force data of the bolts through the force sensor, and transmits it to the central control system. The frequency of data acquisition should be set according to actual needs to ensure that the force changes can be captured in time; The determination module is used to compare the standard tightening torque value in the data acquisition module with the current tightening torque value in real time to determine the tightening state of the nut.

[0022] According to the size, force range and accuracy requirements of the bolt, select the appropriate type and specification of force sensor to ensure that the force sensor can accurately measure the axial force and torque of the bolt. Install the force sensor on the bolt to ensure that it is firmly installed and does not affect the normal operation of the bolt. It can be installed by gluing, clamping or threaded connection. Determine the frequency of data collection according to actual needs. If the force changes quickly in the working environment, such as in equipment with strong vibration, a higher data collection frequency is required to capture the force changes in time. If the force changes relatively slowly, the data collection frequency can be appropriately reduced to save resources. The force sensor begins to continuously collect the force data of the bolt, including axial force and torque, and transmits the collected force data to the central control system via wired or wireless means. Ensure the stability and reliability of data transmission, avoid data loss or transmission errors, compare the standard tightening torque value with the current tightening torque value in real time and judge the tightening status. The central control system receives the force data from the force sensor, and calculates the tightening torque value of the current bolt according to the force data through the corresponding formula or algorithm; compare the current tightening torque value with the standard tightening torque value in real time. If the current tightening torque value is within the reasonable range of the standard tightening torque value, it can be considered that the nut is in a normal tightening state; if the current tightening torque value is less than the lower limit of the standard tightening torque value, it means that the nut may be loose; if the current tightening torque value is greater than the upper limit of the standard tightening torque value, there may be an over-tightening situation. According to the real-time monitoring data, the force changes of bolts and nuts in different working stages can be understood. Through automated data collection and analysis, the workload and error rate of manual inspection can be reduced, and production efficiency can be improved. At the same time, the bolts and nuts are at the optimal tightening torque during adaptation, which improves the stability of adaptation.

[0023] The strategy formulation unit 300 is used to monitor the temperature change of the working environment, classify and analyze according to different temperature intervals, determine the range to which the current temperature belongs, and formulate a nut adjustment strategy according to the results of temperature analysis and nut state evaluation; Considering that timely adjusting the tightness of the nut according to temperature changes may cause loose connection, over-tightening, leakage and other problems caused by temperature, increasing equipment failure and maintenance costs, therefore, the strategy formulation unit 300 includes a temperature acquisition module and an adjustment strategy module; The temperature acquisition module uses a temperature sensor to obtain the specific temperature of the working environment; The adjustment strategy module divides the temperature interval, uses the interval judgment method to match the corresponding temperature interval according to the temperature obtained by the temperature acquisition module, and formulates the nut tightness adjustment strategy according to different temperature intervals.

[0024] According to the characteristics and requirements of the working environment, select a temperature sensor with high accuracy, fast response speed and strong reliability. Common temperature sensors include thermocouples and thermal resistors. Install the temperature sensor near the bolts and nuts to ensure that the temperature of the working environment can be accurately measured. Connect the sensor to the data acquisition system: Connect the temperature sensor to the data acquisition system to transmit the temperature data to the central control system for processing and analysis. According to the material properties of the bolts and nuts, such as thermal expansion coefficient, strength, etc., and the requirements of the working environment, determine the appropriate temperature interval division. For example, the temperature can be divided into low temperature zone, medium temperature zone and high temperature zone according to the thermal expansion characteristics of the material. According to the analysis results, determine the boundary values ​​of each temperature interval. These boundary values ​​should be able to accurately reflect the changes in material properties at different temperatures. Mark each temperature interval so that the interval to which the current temperature belongs can be quickly identified in the subsequent judgment and adjustment strategy formulation; According to the obtained temperature, the interval judgment method is used to match the corresponding temperature interval: Real-time acquisition of temperature data: Temperature sensors continuously collect temperature data of the working environment and transmit it to the central control system.

[0025] Interval judgment: The central control system uses the interval judgment method to determine the temperature interval to which the current temperature belongs based on the pre-set temperature interval boundary value. For example, if the current temperature is greater than the upper limit of the low temperature zone and less than the lower limit of the medium temperature zone, it is judged that the current temperature is in the medium temperature zone; Formulate nut tightness adjustment strategies according to different temperature ranges: Analyze the impact of temperature on material properties: For each temperature range, analyze the impact of temperature changes on the material properties of bolts and nuts, such as thermal expansion, contraction, softening, etc.

[0026] Determine the adjustment target: Determine the target of nut tightness adjustment according to the change of material properties. For example, in high temperature areas such as above 50℃, as the temperature rises, the plastic will expand. This may cause the bolt and nut connection to be too tight, increase the stress of the bolt, and may even cause the bolt to break, so the nut needs to be loosened to prevent overtightening; in low temperature areas such as 0--20℃, plastics usually shrink at low temperatures. This may cause the bolt and nut connection to become loose because the gap between the bolt and the nut will increase. For example, the plastic bolts and nuts used in refrigeration equipment may become loose when the ambient temperature drops to the low temperature zone, affecting the sealing of the equipment, so the nuts need to be tightened to prevent loosening. Maintaining the proper connection state of the bolts and nuts can improve the overall performance of the equipment.

[0027] The algorithm formula for the nut tightening torque in the adjustment strategy module is as follows: Assume the initial temperature is , the current temperature is ; The standard tightening torque of the bolt at the initial temperature is ; The thermal expansion coefficient of plastic material is ; The effective length of the bolt is ; Temperature change equal ; Change in bolt length due to temperature change ; The tightening torque is proportional to the tensile stress of the bolt, which in turn is related to the elongation of the bolt; Let the proportionality factor be , then the adjusted tightening torque It can be expressed as: ; Among them, the proportionality coefficient K is obtained through experiments, which reflects the sensitivity of the tightening torque to the change of bolt length; Adjust the tightening torque of the bolts according to temperature changes to adapt to the connection requirements of bolts and nuts at different temperatures. The initial standard tightening torque It is determined at a specific initial temperature. When the temperature changes, the tightening torque value that needs to be adjusted can be calculated by considering the material expansion coefficient and the temperature change; the proportionality coefficient It is used to adjust the influence of length change on the tightening torque. It can be determined through experiments or experience to ensure that the adjusted tightening torque can not only ensure the reliability of the connection, but also will not damage the material due to over-tightening or over-loosening. The above formula provides a quantitative basis for realizing adaptive nut tightness adjustment, so that the tightening torque can be adjusted through precise calculation under different temperature environments, thereby improving the stability and safety of the bolt and nut connection.

[0028] The adjustment strategy module formulates the nut tightness adjustment strategy, which specifically includes the following steps: Data collection: Collect a large amount of relevant data on bolts and nuts at different temperatures, including temperature values, current tightening torque, material properties, bolt size, nut size, etc. as input features; Data preprocessing: remove outliers and erroneous data to ensure data accuracy, normalize input features and output targets to keep their numerical ranges within a smaller range, and divide data into training sets, validation sets, and test sets; Model training: Randomly initialize the weights and biases of the neural network, select a loss function suitable for the numerical prediction problem, input the training set data into the neural network, calculate the output through forward propagation, and obtain the tightening torque adjustment size corresponding to different temperatures; Model application: Get the specific temperature in the temperature acquisition module and adjust the tightening torque value.

[0029] Formulate specific adjustment strategies: According to the adjustment objectives, formulate specific nut tightness adjustment strategies, which can include the direction of tightening or loosening, the amplitude of adjustment, the timing of adjustment, etc. For example, you can determine when to make adjustments and the amplitude of adjustment based on the amplitude and trend of temperature changes. By dividing the temperature intervals and formulating corresponding adjustment strategies, the connection between bolts and nuts can adapt to the working environment at different temperatures to ensure the reliability and stability of the connection. Timely adjustment of the tightness of nuts according to temperature changes can prevent problems such as loose connection, overtightening, leakage, etc. caused by temperature, reduce equipment failures and maintenance costs, and maintain the appropriate connection state of bolts and nuts to improve the overall performance of the equipment, ensure that the equipment can operate normally at different temperatures, improve production efficiency and product quality, and ensure that the equipment can operate normally at different temperatures to improve production efficiency and product quality.

[0030] The optimization unit 400 is used to obtain all data during the adjustment process, including temperature, stress conditions, and adjustment strategies, and record them for subsequent analysis and optimization.

[0031] By recording the temperature, force and adjustment data at different time points, a detailed fault analysis can be performed when a problem occurs to avoid the recurrence of similar problems. Therefore, the optimization unit 400 includes a recording module and a timestamp module; The recording module is used to record the temperature values ​​at different time points during the adjustment process, including the ambient temperature and the surface temperature of the bolts and nuts, and to record the changes in the axial force and torque of the bolts to reflect the stress state of the nuts; The timestamp module is used to record the strategy adopted each time the nut is adjusted, including the direction of adjustment (tightening or loosening) and the amount of adjustment, and to add a timestamp to each data record so that the time sequence of the data can be accurately understood during subsequent analysis.

[0032] According to actual needs and the speed of change, select the appropriate acquisition frequency to ensure that the temperature and force changes at different time points can be captured. The data acquisition system is equipped with a timestamp function to ensure that each data record carries accurate time information. Whenever the nut is adjusted, the operator should record the direction of the adjustment, tightening or loosening, and the amount of adjustment. Measuring tools such as torque wrenches can be used to determine the amount of adjustment and note it in the record. The time, direction, and amount of adjustment should be associated with the corresponding temperature and force data to ensure the integrity and traceability of the data. The collected data and adjustment records should be stored in a database or file. A reliable storage method should be selected to ensure the security and accessibility of the data. The data should be classified and marked so that data for a specific time period can be quickly found during analysis. Based on the data analysis results, the nut adjustment strategy can be optimized to improve the accuracy and efficiency of the adjustment. By recording the temperature, force, and adjustment data at different time points, a detailed fault analysis can be performed when a problem occurs. For example, if the bolts and nuts become loose or damaged, historical data can be viewed to determine whether it is caused by temperature changes, excessive force, or improper adjustment. Appropriate preventive measures can be taken to avoid similar problems from happening again.

[0033] The optimization unit 400 also includes an adjustment module, which is used to regularly analyze the recorded data to understand the performance changes and adjustment effects of the nut at different temperatures, and optimize the nut adjustment strategy based on the results of the data analysis.

[0034] By analyzing the performance changes of nuts at different temperatures, such as the changes in the axial force and torque of the bolts, and observing the trend of the stress state of the nuts with temperature, we can draw a temperature-stress relationship curve, intuitively understand the relationship between the two, evaluate the effect of the nut adjustment strategy in different temperature ranges, compare the stress conditions of the bolts before and after adjustment, the stability of the nuts and other indicators, judge whether the adjustment strategy has achieved the expected goal, and determine the aspects that need to be optimized based on the data analysis results. For example, if it is found that the nut adjustment amount in a certain temperature range is too large or too small, the adjustment strategy for that range can be adjusted. By regularly analyzing the data and optimizing the adjustment strategy, the nuts can always maintain a suitable tightening state at different temperatures, improve the reliability of the bolt and nut connection, and reduce equipment failures and safety hazards caused by looseness or overtightening.

[0035] A second object of the present invention is to provide a method for confirming accurate adjustment in place, comprising any one of the above-mentioned accurate adjustment in place confirmation systems, comprising the following steps: S1. Obtain material parameters of bolts and nuts; S2, collecting the force data of the bolt and determining the tightening state of the nut; S3. Monitor the temperature changes in the working environment, classify and analyze according to different temperature intervals, determine the range to which the current temperature belongs, and formulate a nut adjustment strategy based on the results of temperature analysis and nut status assessment; S4. Obtain all data during the adjustment process, including temperature, stress conditions, and adjustment strategies, and record them for subsequent analysis and optimization.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A precise adjustment confirmation system, characterized by: It comprises a parameter acquisition unit (100), a state judgment unit (200), a strategy formulation unit (300) and an optimization unit (400); The parameter acquisition unit (100) is used to acquire material parameters of bolts and nuts; The state judgment unit (200) is used to collect force data of the bolt and judge the tightening state of the nut; The strategy formulation unit (300) is used to monitor the temperature change of the working environment, classify and analyze according to different temperature intervals, determine the range to which the current temperature belongs, and formulate a nut adjustment strategy according to the results of temperature analysis and nut state evaluation; The optimization unit (400) is used to obtain all data during the adjustment process, including temperature, stress conditions, and adjustment strategies, and record them for subsequent analysis and optimization.

2. The precise adjustment confirmation system according to claim 1, characterized in that: The parameter acquisition unit (100) acquires material parameters of the bolts and nuts, wherein the material parameters include material properties, size specifications, and standard tightening torque.

3. The precise adjustment confirmation system according to claim 1, characterized in that: The state judgment unit (200) comprises a data acquisition module and a judgment module; The data acquisition module determines the standard tightening torque value of the nut according to the material parameters, size specifications and working requirements of the bolt and nut, continuously collects the force data of the bolt through the force sensor, and transmits it to the central control system. The frequency of data acquisition should be set according to actual needs to ensure that the force changes can be captured in time; The determination module is used to compare the standard tightening torque value in the data acquisition module with the current tightening torque value in real time to determine the tightening state of the nut.

4. The precise adjustment confirmation system according to claim 1, characterized in that: The strategy formulation unit (300) comprises a temperature acquisition module and an adjustment strategy module; The temperature acquisition module uses a temperature sensor to obtain the specific temperature of the working environment; The adjustment strategy module divides the temperature intervals, matches the corresponding temperature intervals using an interval judgment method according to the temperature acquired by the temperature acquisition module, and formulates the tightness adjustment strategy of the nut according to different temperature intervals.

5. The precise adjustment confirmation system according to claim 1, characterized in that: The algorithm formula for the nut tightening torque in the adjustment strategy module is as follows: Assume the initial temperature is , the current temperature is ; The standard tightening torque of the bolt at the initial temperature is ; The thermal expansion coefficient of plastic material is ; The effective length of the bolt is ; Temperature change equal ; Change in bolt length due to temperature change ; The tightening torque is proportional to the tensile stress of the bolt, which in turn is related to the elongation of the bolt; Let the proportionality factor be , then the adjusted tightening torque It can be expressed as: ； Among them, the proportionality coefficient K is obtained through experiments, which reflects the sensitivity of the tightening torque to the change of bolt length.

6. The precise adjustment confirmation system according to claim 4, characterized in that: The adjustment strategy module formulates the nut tightness adjustment strategy, which specifically includes the following steps: Data collection: Collect a large amount of relevant data on bolts and nuts at different temperatures, including temperature values, current tightening torque, material properties, bolt size, nut size, etc. as input features; Data preprocessing: remove outliers and erroneous data to ensure data accuracy, normalize input features and output targets to keep their numerical ranges within a smaller range, and divide data into training sets, validation sets, and test sets; Model training: Randomly initialize the weights and biases of the neural network, select a loss function suitable for the numerical prediction problem, input the training set data into the neural network, calculate the output through forward propagation, and obtain the tightening torque adjustment size corresponding to different temperatures; Model application: Get the specific temperature in the temperature acquisition module and adjust the tightening torque value.

7. The precise adjustment confirmation system according to claim 1, characterized in that: The optimization unit (400) comprises a recording module and a timestamp module; The recording module is used to record the temperature values ​​at different time points during the adjustment process, including the ambient temperature and the surface temperature of the bolts and nuts, and to record the changes in the axial force and torque of the bolts to reflect the stress state of the nuts; The timestamp module is used to record the strategy adopted each time the nut is adjusted, including the direction and amount of adjustment, and to add a timestamp to each data record.

8. The precise adjustment confirmation system according to claim 7, characterized in that: The optimization unit (400) also includes an adjustment module, which is used to regularly analyze the recorded data to understand the performance changes and adjustment effects of the nut at different temperatures, and optimize the nut adjustment strategy based on the results of the data analysis.

9. A method for realizing accurate adjustment in place confirmation, comprising the accurate adjustment in place confirmation system according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Obtain material parameters of bolts and nuts; S2, collecting the force data of the bolt and determining the tightening state of the nut; S3. Monitor the temperature changes in the working environment, classify and analyze according to different temperature intervals, determine the range to which the current temperature belongs, and formulate a nut adjustment strategy based on the results of temperature analysis and nut status assessment; S4. Obtain all data during the adjustment process, including temperature, stress conditions, and adjustment strategies, and record them for subsequent analysis and optimization.

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