A surface defect detection device for a sprocket

Abstract

This invention discloses a surface defect detection device for sprockets, belonging to the technical field of surface defect detection devices, including a detection box. The invention utilizes a positioning block in conjunction with a 3D scanner and a connecting rod to eliminate blind spots and reduce missed detections of minute defects. An analysis module calculates the combined influence of three factors on penetration based on data from the temperature, concentration, and immersion time of the fluorescent detection solution. Then, based on real-time temperature and concentration, an estimated immersion time is calculated. The immersion time is automatically adjusted according to the specific condition of the sprocket and the detection requirements to ensure the fluorescent detection solution fully penetrates the surface defects of the sprocket, improving defect visibility and thus enhancing the accuracy and reliability of the detection. The analysis module combines the detection solution concentration, immersion time, and ultrasonic parameters to calculate the minimum temperature data that meets the requirements. Considering the temperature changes caused by ultrasonic heating, a suitable temperature range is selected, and the minimum value is taken as the minimum temperature data.

Description

Technical Field

[0001] This invention relates to the field of surface defect detection devices, and more particularly to a surface defect detection device for sprockets. Background Technology

[0002] As a core component of mechanical transmission systems, the surface quality of sprockets directly affects transmission efficiency (defects can lead to a 5%–10% decrease in efficiency) and service life (the presence of cracks can shorten service life by more than 40%). In industrial production, sprocket surfaces often develop defects such as cracks (length > 0.5 mm), pits (depth > 0.2 mm), and burrs due to forging, machining, and other processes. If these defects are not detected in time, they may cause serious malfunctions such as equipment jamming and breakage (increasing the failure rate by 20%–30%).

[0003] However, existing surface defect detection devices for sprockets have several limitations in terms of comprehensiveness. Most devices use single-angle imaging, which can lead to blind spots (over 10%) in complex areas such as the inner side of the sprocket teeth and the end face of the hub (accounting for 30% to 40% of the surface area). This results in the missed detection of minor defects (such as hairline cracks). Furthermore, the device's lighting system is poorly designed, with strong direct light causing reflections (reflective areas exceeding 15%) or insufficient light creating shadows, affecting the accuracy of defect identification (accuracy rate less than 80%).

[0004] Therefore, the above-mentioned technical problems need to be addressed. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a surface defect detection device for sprockets.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a surface defect detection device for sprockets, comprising a detection box, a conveying mechanism installed on one side of the detection box, and a support block fixedly connected inside the detection box, a detection groove installed on the upper end of the support block, a guiding mechanism installed opposite to the detection groove, a detection mechanism installed on the upper end of the detection box at one end of the guiding mechanism, and a discharge port opened at the other end of the detection box;

[0007] The testing box is equipped with intelligent control components, which include a data acquisition module, an analysis module, and an execution module.

[0008] The data acquisition module acquires data on the temperature, concentration, and soaking time of the fluorescent detection solution, as well as ultrasonic parameter data, and transmits the acquired data to the analysis module.

[0009] The analysis module receives data from the acquisition module and analyzes the data on the temperature, concentration, and soaking time of the fluorescence detection solution to obtain the comprehensive influence of these three factors on permeability. Based on the comprehensive influence, it analyzes the impact value caused by changes in single or dual factors, calculates the soaking time at the corresponding temperature and concentration, generates a soaking warning signal, and transmits the soaking warning signal to the execution module. Combining the ultrasonic parameter data, it calculates the minimum soaking temperature, generates a temperature control signal, and transmits the temperature control signal to the execution module.

[0010] The steps for the comprehensive impact analysis in the analysis module are as follows:

[0011] S1: Detecting liquid viscosity , Viscosity at initial temperature To detect the activation energy of liquid flow, Given the gas constant; defect permeability is negatively correlated with viscosity, then temperature... The impact of defect penetration is , Temperature effect coefficient; concentration of the detection solution The impact of defect penetration is , This is the concentration gain coefficient. Concentration saturation coefficient; soaking time The impact of defect penetration is , The initial permeation resistance coefficient, Characteristic penetration time;

[0012] S2: Assuming that temperature, concentration, and duration act independently, what is the combined effect of these three factors? ;

[0013] The execution module receives signals from the analysis module and performs corresponding operations.

[0014] Preferably, the analysis module performs the following steps for analyzing the comprehensive impact:

[0015] S1: Detecting liquid viscosity Defect penetration is negatively correlated with viscosity, therefore the temperature-dependent effect on defect penetration is: The effect of the concentration of the detection solution on defect penetration is: The effect of soaking time on defect penetration is: ;

[0016] S2: Assuming that temperature, concentration, and duration act independently, what is the combined effect of these three factors? .

[0017] Preferably, the analysis module performs the following steps for analyzing the influence of single and dual factors:

[0018] K1: Establish an experiment where, while keeping the other two factors constant, one factor is changed, and the impact of the change in that single factor is recorded. , The number of trials is given; the average value of the influence values ​​is obtained by removing extreme values, thus yielding the standard influence value caused by the change of a single factor. This standard influence value is then divided by the magnitude of the change in the corresponding factor to obtain the unit influence value of that factor. ;

[0019] K2: Analyze the interaction between pairs of factors, create a 3x3 table, with the first row and first column representing one factor each. Fill in the corresponding defect penetration values ​​in the other table positions. Calculate the difference in defect penetration values ​​before and after the change in each factor (assuming the same magnitude of change), and calculate the difference between two defect penetration value differences as the interaction effect value between the two factors; also calculate the unit impact value of each factor. ;

[0020] K3: When there is a single-factor or two-factor change, the corresponding change value can be estimated by multiplying the measured unit impact value by the magnitude of the change. The final comprehensive impact When demand When the sprocket is in operation, the estimated soaking time can be obtained based on the real-time temperature and concentration. When the estimated soaking time is reached, a soaking warning signal is generated and transmitted to the execution module.

[0021] Preferably, the analysis module performs the following steps to analyze the soaking temperature:

[0022] Q1: When demand When adjusting the sprocket, the minimum temperature that meets the requirements can also be determined based on the range of test solution concentration and immersion time data. The final temperature after ultrasonic treatment , Initial low temperature, The ultrasonic heat generation coefficient is... For ultrasonic power density, The duration of ultrasonic wave action;

[0023] Q2: Temperature change caused by ultrasound For temperature range Internal corresponding temperature The values ​​are retrieved and filtered to keep those that meet the criteria. The corresponding temperature value ;like The corresponding temperature values ​​within the range all satisfy Then take the minimum temperature value. The system generates a temperature control signal based on the lowest temperature data and then transmits the signal to the execution module.

[0024] Preferably, multiple sealing curtains are fixed downward at equal intervals to the detection box at the upper end of the discharge port, and a lighting component is installed on the upper inner wall of the detection box inside the sealing curtain. Both sides of the detection box are equipped with a self-locking door.

[0025] Preferably, the conveying mechanism includes a support frame installed below the detection box outside the sealing curtain, a guard plate is installed on the upper end of the support frame, a servo motor is installed on one end of the guard plate, and conveying rollers are rotatably installed on both ends inside the guard plate, with a conveyor belt sleeved on the upper end of the conveying rollers.

[0026] Preferably, the output end of the servo motor is coaxially fixed to one end of one of the conveying rollers through the guard plate, and a detector is installed on the upper end of the guard plate.

[0027] Preferably, the material guiding mechanism includes a support groove installed opposite to the detection groove, and guide rollers are rotatably installed at equal distances between the two support grooves, with the guide rollers at the same horizontal height as the discharge port.

[0028] Preferably, the detection mechanism includes a positioning frame installed at the other end of the detection slot, and support plates are installed alternately between the two positioning frames. A fixing rod is supported on the support plate. An irradiator is installed vertically downward from the fixing rod and the detection box above the positioning frame. A fixing block is fixedly connected to one end of the detection box. A connecting rod is hinged to the fixing block. A three-dimensional scanner is hinged to the other end of the connecting rod. Damping is provided between both ends of the connecting rod and the fixing block and the three-dimensional scanner.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] By combining the positioning block with the 3D scanner and connecting rod, blind spots in the detection are eliminated, minor defects are reduced, and the comprehensiveness of the detection is improved, thus enabling all-around defect detection. By combining the lighting component with the detection box and sealing curtain, the accuracy of defect identification is improved, thus enabling stable light-assisted detection. Furthermore, by combining the conveying mechanism with the material guiding mechanism, automated continuous detection is achieved, improving detection efficiency and enabling orderly conveying of sprockets. Ultimately, this solves the problems of incomplete detection and low identification accuracy in existing surface defect detection devices for sprockets.

[0031] The analysis module uses data on the temperature, concentration, and soaking time of the fluorescent detection solution to determine the combined effect of these three factors on the penetration. Then, based on the real-time temperature and concentration, the estimated soaking time is calculated. According to the specific condition of the sprocket and the detection requirements, the soaking time is automatically adjusted to ensure that the fluorescent detection solution fully penetrates the defects on the sprocket surface, improves the defect display effect, and thus improves the accuracy and reliability of the detection.

[0032] By combining the detection solution concentration, immersion time, and ultrasonic parameters through the analysis module, the minimum temperature data that meets the requirements is calculated. Taking into account the temperature changes caused by ultrasonic heat generation, a suitable temperature range is selected, and the minimum value among them is taken as the minimum temperature data. This ensures that the detection solution can still effectively penetrate defects at a lower temperature, while avoiding excessively high temperatures that accelerate the decomposition and volatilization of the detection solution components, thereby reducing detection solution loss and lowering detection costs. Attached Figure Description

[0033] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0034] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this invention;

[0035] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the other side proposed in this invention;

[0036] Figure 3 This is a schematic diagram of the partial overall three-dimensional first-view structure proposed in this invention;

[0037] Figure 4 This is a schematic diagram of the partial-to-overall three-dimensional second-view structure proposed in this invention;

[0038] Figure 5 This is a schematic diagram of the partial overall side view structure proposed in this invention;

[0039] Figure 6 This is a flowchart of the system proposed in this invention.

[0040] The following are the components listed in the diagram: 1. Detection box; 2. Sealing door; 3. Support frame; 4. Protective plate; 5. Detector; 6. Servo motor; 7. Sealing curtain; 8. Support block; 9. Detection groove; 10. Support groove; 11. Guide roller; 12. Support plate; 13. Positioning frame; 14. Fixing rod; 15. Fixing block; 16. 3D scanner; 17. Connecting rod; 18. Lighting assembly; 19. Illuminator. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] Example 1: See Figures 1 to 5 This invention discloses a surface defect detection device for sprockets, comprising a detection box 1, a conveying mechanism mounted on one side of the detection box 1, and a support block 8 fixedly connected inside the detection box 1. A detection groove 9 is mounted on the upper end of the support block 8, and a guiding mechanism is mounted opposite to it inside the detection groove 9. A detection mechanism is mounted on the upper end of the detection box 1 at one end of the guiding mechanism, and a discharge port is opened at the other end of the detection box 1. Through the detection box 1, conveying mechanism, support block 8, detection groove 9, guiding mechanism, detection mechanism, and discharge port, rapid detection of surface defects on the sprocket is easily achieved. Multiple sealing curtains 7 are fixedly connected downwards at equal intervals to the upper end of the detection box 1 at the discharge port. The detection box 1 inside the sealing curtains 7... The inner wall of the end is equipped with a lighting component 18, and both sides of the test box 1 are equipped with a self-locking closed door 2. The sealing curtain 7 at the discharge port of the test box 1, the lighting component 18 and the closed doors 2 on both sides facilitate the creation of a stable testing environment. The conveying mechanism includes a support frame 3 installed on the outside of the sealing curtain 7 and below the test box 1. A guard plate 4 is installed on the upper end of the support frame 3. A servo motor 6 is installed on one end of the guard plate 4, and conveying rollers are rotatably installed on both ends inside the guard plate 4. A conveyor belt is sleeved on the upper end of the conveying rollers. The support frame 3, guard plate 4, servo motor 6, conveying rollers and conveyor belt below the test box 1 facilitate the stable conveying of the sprocket to the test box 1.

[0043] In this invention, the output end of the servo motor 6 passes through the guard plate 4 and is coaxially fixed to one end of one of the conveying rollers. A detector 5 is installed on the upper end of the guard plate 4. Through the servo motor 6, the conveying roller, and the detector 5 on the guard plate 4, it is convenient to perform preliminary detection of the sprocket during the conveying process. The material guiding mechanism includes a support groove 10 installed above the detection groove 9. Guide rollers 11 are rotatably installed at equal distances between the two support grooves 10. The guide rollers 11 are at the same horizontal height as the discharge port. Through the support groove 10 and the guide rollers 11 above the detection groove 9, it is convenient to guide the sprocket to move smoothly in the detection box 1. The detection mechanism includes a device installed in the detection groove. At the other end of the 9, a positioning frame 13 is provided. Support plates 12 are installed alternately between the two positioning frames 13. A fixing rod 14 is supported on the support plate 12. An irradiator 19 is installed vertically downward from the inspection box 1 above the positioning frame 13 on the fixing rod 14. A fixing block 15 is fixedly connected to one end of the inspection box 1. A connecting rod 17 is hinged to the fixing block 15. A three-dimensional scanner 16 is hinged to the other end of the connecting rod 17. Damping is provided between both ends of the connecting rod 17 and the fixing block 15 and the three-dimensional scanner 16. Through the irradiator 19, the fixing block 15, the connecting rod 17 and the three-dimensional scanner 16, it is convenient to conduct a comprehensive inspection of the surface defects of the sprocket.

[0044] Working Principle: In the use of this invention, the operator first enters the detection chamber 1 through the self-locking closed doors 2 on both sides, ensuring that a relatively enclosed space is formed inside the detection chamber 1 to reduce interference from external light and other factors. Simultaneously, the lighting assembly 18 and irradiator 19 are turned on, and the 3D scanner 16 is positioned for easy detection via the swing connecting rod 17. The fluorescent detection liquid box can then be placed in the positioning frame 13. An external operator observes the internal situation through the display screen, and then places the sprocket box to be tested onto the conveyor belt. Simultaneously, the servo motor 6 is started, driving the conveyor rollers to rotate via the output end, thus transferring the sprocket box to the sealing curtain 7 via the conveyor belt. At the same time, the detector 5 detects the position and status of the sprocket, ensuring that the sprocket conforms to the specified parameters. The conditions for entering the inspection box 1 are met, and a reminder is issued to the personnel inside the inspection box 1. The sprocket box to be inspected can then be pulled in through the sealing curtain 7. At the same time, the guide roller 11 makes it easy for the personnel inside to place the sprocket box in a suitable position for picking up and inspecting. When the personnel inside pick up the sprocket, it is first immersed in fluorescent detection liquid. At this time, it is irradiated by the irradiator 19 to make the defects on the surface of the sprocket more easily detectable. At the same time, the 3D scanner 16 transmits the scanned sprocket surface information to the relevant processing system. The system analyzes and processes the information to determine whether there are defects on the surface of the sprocket. If there are defects, the sprocket can be suspended on the fixed rod 14 supported by the support plate 12. After the inspection is completed, the sprocket box can be pushed out through the discharge port or stacked inside the inspection box 1.

[0045] Example 2: See Figure 6 The detection box 1 is equipped with an intelligent control component, which includes a data acquisition module, an analysis module, and an execution module.

[0046] The data acquisition module acquires data on the temperature, concentration, and soaking time of the fluorescent detection solution, as well as ultrasonic parameter data, and transmits the acquired data to the analysis module.

[0047] The analysis module receives data from the acquisition module and analyzes the data on the temperature, concentration, and soaking time of the fluorescence detection solution to obtain the comprehensive influence of these three factors on permeability. Based on the comprehensive influence, it analyzes the impact value caused by changes in single or dual factors, calculates the soaking time at the corresponding temperature and concentration, generates a soaking warning signal, and transmits the soaking warning signal to the execution module. Combining the ultrasonic parameter data, it calculates the minimum soaking temperature, generates a temperature control signal, and transmits the temperature control signal to the execution module.

[0048] The collected data was sorted according to the collection time, and corresponding items collected at the same time were sorted. averaging the data and standard deviation The calculation, and the mean obtained from the calculation. and standard deviation Collect data fluctuation range for corresponding items The system is configured to compare the collected data for a given item with its fluctuation range, mark data outside the fluctuation range as outliers, and record the number of outliers. ,like If the collected data is abnormal, the data will be re-tested; if If outliers are removed, the mean of the remaining corresponding test data after outlier removal is calculated. The calculation, and the mean obtained from the calculation. As the corresponding data detected at the corresponding time;

[0049] Re-examine the corresponding data; if the comparison result is still negative... If the problem is detected, it is determined that the acquisition device is malfunctioning, an equipment warning signal is generated, and the equipment warning signal is transmitted to the execution module.

[0050] After receiving the equipment warning signal, the execution module controls the buzzer module of the intelligent control component to emit a buzzer warning and controls the red light in the red, yellow and green color lights to light up, so that the staff can carry out timely maintenance operations on the equipment.

[0051] During the process of immersing the sprocket in the fluorescent detection solution in the container, it is important to ensure that the temperature of the "constant temperature immersion tank" is accurately maintained at the corresponding temperature. Excessive temperature fluctuations will affect the activity of the fluorescent detection solution. If the temperature is too high, it may accelerate the decomposition and volatilization of the detection solution components, reducing the penetration and display effect on sprocket defects. If the temperature is too low, the fluidity of the detection solution will be poor, making it difficult to fully penetrate into the tiny defects, resulting in missed defects.

[0052] The effectiveness of sprocket immersion is related to the temperature, concentration, and immersion time of the fluorescent detection solution; temperature By changing the viscosity of the detection liquid Impact on liquidity , Viscosity at initial temperature To detect the activation energy of liquid flow, Let be the gas constant; since defect permeability is negatively correlated with viscosity, then the effect of temperature on defect permeability... , This is the temperature influence coefficient;

[0053] Fixed detection solution concentration Soaking time Without ultrasonic testing, set 5-7 different temperatures. At each temperature, immerse a standard defect sprocket (with a pre-fabricated defect of known depth / width) and measure the defect penetration. The formula was fitted using the least squares method. ;

[0054] At low concentrations, the concentration of the detection solution Increasing the concentration leads to increased fluorescent agent adsorption, more defect visibility, and increased defect penetration; at high concentrations, the detection solution concentration... Increasing the concentration of the detection solution leads to increased viscosity, decreased fluidity, and reduced defect penetration. Simplifying this relationship, we obtain the effect of detection solution concentration on defect penetration. , This is the concentration gain coefficient. The concentration saturation coefficient;

[0055] Fixed temperature Soaking time Without ultrasonic waves, set up 5-7 groups of different concentrations. At each concentration, immerse a standard defect sprocket (with a pre-fabricated defect of known depth / width) and measure the defect penetration. The formula is fitted using nonlinear regression. and ;

[0056] Concentration gain coefficient This primarily reflects the positive promoting effect of the detection solution concentration on defect penetration and fluorescence display within the low concentration range, used to quantify the gain in defect display with each unit increase in concentration; For example, it means that when the concentration of the detection liquid is in a reasonably low range (not reaching the critical concentration that would significantly increase the viscosity of the detection liquid), for every 1% increase in concentration, the penetration of the detection liquid into sprocket defects and the clarity of subsequent fluorescence display can theoretically be improved by 20%.

[0057] Soaking time The longer the soaking time, the more complete the penetration, but there is a saturation upper limit, which follows a logarithmic saturation relationship. Therefore, the soaking time affects the defect penetration. , The initial permeation resistance coefficient, Characteristic penetration time;

[0058] Fixed temperature ,concentration Without ultrasonic testing, set 5-7 groups of different immersion times. For each group, immerse the sample in a standard defect sprocket (with a pre-fabricated defect of known depth / width) and measure the defect penetration. Based on... The formula is fitted using nonlinear regression. and ;

[0059] Assuming that temperature, concentration, and duration act independently, what is the combined effect of these three factors? ;temperature The concentration of the test solution must be lower than the decomposition temperature of the test solution; The concentration must be maintained between the minimum concentration at which defects are observed and the critical concentration at which viscosity rises sharply; soaking time It needs to be kept between the minimum penetration time and the maximum allowable time of the production line;

[0060] However, in reality, the three factors influence each other. An experiment was conducted where, while keeping the other two factors constant, one factor was changed, and the impact of this single factor change was recorded. , The number of trials is given; the average value of the influence values ​​is obtained by removing extreme values, thus yielding the standard influence value caused by the change of a single factor. This standard influence value is then divided by the magnitude of the change in the corresponding factor to obtain the unit influence value of that factor. ;

[0061] To analyze the interactions between pairs of factors, a 3x3 table is created, with the first row and first column representing one factor. The corresponding defect penetration is entered in the other table positions. The difference in defect penetration before and after the change in each factor (with the same magnitude of change) is calculated, and the difference between two defect penetration differences is calculated as the interaction effect value between the two factors. The extreme values ​​of the interaction effect values ​​are removed, and the average is calculated to obtain the standard impact value caused by the change in each factor. This standard impact value is then divided by the magnitude of the change in the corresponding factor to obtain the unit impact value of the corresponding factor. ;

[0062] When a single-factor or two-factor change occurs, the corresponding change value can be estimated by multiplying the measured unit impact value by the magnitude of the change. The final comprehensive impact When demand When the sprocket is in operation, the estimated soaking time can be obtained based on the real-time temperature and concentration. When the soaking time reaches the estimated soaking time, a soaking warning signal is generated and transmitted to the execution module.

[0063] After receiving the warning signal, the execution module controls the buzzer module of the intelligent control component to emit a buzzer warning and controls the yellow light in the red, yellow and green color lights to light up, so that the staff can carry out timely maintenance operations on the equipment.

[0064] When demand When adjusting the sprocket, the minimum temperature that meets the requirements can also be determined based on the range of test solution concentration and immersion time data. ;

[0065] At low temperatures, poor fluidity of the testing fluid affects defect penetration. Ultrasonic waves can be used to improve the fluidity of the testing fluid; the final temperature after ultrasonic treatment... , Initial low temperature, The ultrasonic heat generation coefficient is... For ultrasonic power density, Ultrasonic wave duration; final temperature The temperature must be kept below the temperature that keeps the detection fluid stable and below the temperature that causes changes in the sprocket.

[0066] Fixed temperature ,concentration Soaking time Set 3-5 different ultrasonic powers and 3-5 different action times; for each parameter group, use a temperature sensor to measure the temperature rise of the detection liquid. ;according to The formula was fitted using the least squares method. ;

[0067] Temperature change caused by ultrasound For temperature range Internal corresponding temperature The values ​​are retrieved and filtered to keep those that meet the criteria. The corresponding temperature value ;like The corresponding temperature values ​​within the range all satisfy Then take the minimum temperature value. The lowest temperature data is used to generate a temperature control signal, which is then transmitted to the execution module.

[0068] After receiving the temperature control signal, the execution module transmits the minimum temperature data to the temperature control device through the transmission module in the intelligent control component, so that the temperature at the immersion position of the fluorescent detection liquid is maintained at the minimum temperature.

[0069] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A surface defect detection device for sprockets, comprising a detection box (1), characterized in that: A conveying mechanism is installed on one side of the testing box (1), and a support block (8) is fixed inside the testing box (1). A testing groove (9) is installed on the upper end of the support block (8). A guiding mechanism is installed inside the testing groove (9). A testing mechanism is installed on the upper end of the testing box (1) at one end of the guiding mechanism, and a discharge port is opened at the other end of the testing box (1). The detection box (1) is equipped with an intelligent control component, which includes a data acquisition module, an analysis module and an execution module; The data acquisition module acquires data on the temperature, concentration, and soaking time of the fluorescent detection solution, as well as ultrasonic parameter data, and transmits the acquired data to the analysis module. The analysis module receives data from the acquisition module and analyzes the data on the temperature, concentration, and soaking time of the fluorescence detection solution to obtain the comprehensive influence of these three factors on permeability. Based on the comprehensive influence, it analyzes the impact value caused by changes in single or dual factors, calculates the soaking time at the corresponding temperature and concentration, generates a soaking warning signal, and transmits the soaking warning signal to the execution module. Combining the ultrasonic parameter data, it calculates the minimum soaking temperature, generates a temperature control signal, and transmits the temperature control signal to the execution module. The steps for the comprehensive impact analysis in the analysis module are as follows: S1: Detecting liquid viscosity , Viscosity at the initial temperature To detect the activation energy of liquid flow, Given the gas constant; defect permeability is negatively correlated with viscosity, then temperature... The impact of defect penetration is , Temperature effect coefficient; concentration of the detection solution The impact of defect penetration is , This is the concentration gain coefficient. Concentration saturation coefficient; soaking time The impact of defect penetration is , The initial permeation resistance coefficient, Characteristic penetration time; S2: Assuming that temperature, concentration, and duration act independently, what is the combined effect of these three factors? ; The execution module receives signals from the analysis module and performs corresponding operations.

2. The surface defect detection device for sprockets according to claim 1, characterized in that: The steps for the comprehensive impact analysis in the analysis module are as follows: S1: Detecting liquid viscosity Defect penetration is negatively correlated with viscosity, therefore the temperature-dependent effect on defect penetration is: The effect of the concentration of the detection solution on defect penetration is: The effect of soaking time on defect penetration is: ; S2: Assuming that temperature, concentration, and duration act independently, what is the combined effect of these three factors? .

3. The surface defect detection device for sprockets according to claim 1, characterized in that: The steps for analyzing the effects of single and two factors in the analysis module are as follows: K1: Establish an experiment where, while keeping the other two factors constant, one factor is changed, and the impact of the change in that single factor is recorded. , The number of trials; The standard impact value of a single factor change is obtained by removing extreme values ​​and taking the mean value. This is then divided by the magnitude of the change in the corresponding factor to obtain the unit impact value of that factor. ; K2: Analyze the interaction between pairs of factors, create a 3x3 table, with the first row and first column representing one factor each. Fill in the corresponding defect penetration values ​​in the other table positions. Calculate the difference in defect penetration values ​​before and after the change in each factor (assuming the same magnitude of change), and calculate the difference between two defect penetration value differences as the interaction effect value between the two factors; also calculate the unit impact value of each factor. ; K3: When there is a single-factor or two-factor change, the corresponding change value can be estimated by multiplying the measured unit impact value by the magnitude of the change. The final comprehensive impact ; When demand When the sprocket is in operation, the estimated soaking time can be obtained based on the real-time temperature and concentration. When the estimated soaking time is reached, a soaking warning signal is generated and transmitted to the execution module.

4. The surface defect detection device for sprockets according to claim 1, characterized in that: The analysis module performs the following steps to analyze the soaking temperature: Q1: When demand When adjusting the sprocket, the minimum temperature that meets the requirements can also be determined based on the range of test solution concentration and immersion time data. The final temperature after ultrasonic treatment , Initial low temperature, The ultrasonic heat generation coefficient is... For ultrasonic power density, The duration of ultrasonic wave action; Q2: Temperature change caused by ultrasound For temperature range Internal corresponding temperature The values ​​are retrieved and filtered to keep those that meet the criteria. The corresponding temperature value ;like The corresponding temperature values ​​within the range all satisfy Then take the minimum temperature value. The system generates a temperature control signal based on the lowest temperature data and then transmits the signal to the execution module.

5. The surface defect detection device for sprockets according to claim 1, characterized in that: Multiple sealing curtains (7) are fixed downward at equal intervals to the detection box (1) at the upper end of the discharge port. A lighting component (18) is installed on the inner wall of the upper end of the detection box (1) inside the sealing curtain (7). Both sides of the detection box (1) are equipped with a closed door (2) with a self-locking function.

6. A surface defect detection device for sprockets according to claim 5, characterized in that: The conveying mechanism includes a support frame (3) installed below the detection box (1) on the outside of the sealing curtain (7). A guard plate (4) is installed on the upper end of the support frame (3). A servo motor (6) is installed on one end of the guard plate (4), and conveying rollers are rotatably installed on both ends inside the guard plate (4). A conveyor belt is sleeved on the upper end of the conveying rollers.

7. A surface defect detection device for sprockets according to claim 6, characterized in that: The output end of the servo motor (6) passes through the guard plate (4) and is coaxially fixed to one end of one of the conveying rollers. A detector (5) is installed on the upper end of the guard plate (4).

8. The surface defect detection device for sprockets according to claim 1, characterized in that: The material guiding mechanism includes a support groove (10) installed above the detection groove (9), and guide rollers (11) are rotatably installed at equal distances between the two support grooves (10), and the guide rollers (11) are at the same horizontal height as the discharge port.

9. A surface defect detection device for sprockets according to claim 8, characterized in that: The detection mechanism includes a positioning frame (13) installed at the other end of the detection slot (9). Support plates (12) are installed alternately between the two positioning frames (13). A fixing rod (14) is supported on the support plate (12). An irradiator (19) is installed vertically downward from the detection box (1) above the positioning frame (13) on the fixing rod (14). A fixing block (15) is fixed to one end of the detection box (1). A connecting rod (17) is hinged to the fixing block (15). A three-dimensional scanner (16) is hinged to the other end of the connecting rod (17). Damping is provided between both ends of the connecting rod (17) and the fixing block (15) and the three-dimensional scanner (16).

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