Surface defect detection device for chain wheel

Abstract

The invention discloses a surface defect detection device for a chain wheel, and relates to the technical field of surface defect detection devices. Through cooperation of the positioning block, the three-dimensional scanner and the connecting rod, detection blind areas can be eliminated conveniently, and missing detection of fine defects is reduced; the comprehensive influence of the three factors on the permeability is obtained through an analysis module according to the temperature, concentration and soaking duration data of the fluorescence detection liquid; then, the estimated soaking duration is calculated according to the real-time temperature and concentration, the soaking duration is automatically adjusted according to the specific conditions and detection requirements of the chain wheel, it is ensured that fluorescence detection liquid fully permeates into the surface defects of the chain wheel, the defect display effect is improved, and then the detection accuracy and reliability are improved; the analysis module is combined with the concentration of the detection liquid, the soaking duration and the ultrasonic parameters to calculate the lowest temperature data meeting the requirements, the temperature change caused by ultrasonic heat generation is considered, a proper temperature range is screened out, and the minimum value is taken as the lowest temperature data.

Description

TECHNICAL FIELD

[0001] The present application relates to surface defect detection device technical field, especially to a kind of surface defect detection device for chain wheel. BACKGROUND

[0002] Chain wheel is the core component of mechanical transmission system, and its surface quality directly affects transmission efficiency (defects can cause efficiency to drop 5%~10%) and service life (cracks exist, service life is shortened by more than 40%), in industrial production, chain wheel surface often produces crack (length>0.5mm), pit (depth>0.2mm), burr and other defects due to forging, machining and other links, if not detected in time, it can cause serious failure (fault rate increases 20%~30%) such as equipment jam, fracture; And a kind of surface defect detection device for chain wheel in the prior art in the process of using, in the detection comprehensiveness aspect, since most devices adopt single angle imaging detection, for complex parts (accounting for 30%~40% of surface area) such as chain wheel tooth groove inner side, hub end face, blind area (blind area ratio is more than 10%) is prone to appear, leading to slight defect (such as hairline crack) missed detection, secondly, the design of illumination system of device is unreasonable, strong light direct incidence produces reflection (reflection area ratio is more than 15%), or light is insufficient to form shadow, affects defect identification precision (recognition accuracy is less than 80%); Therefore, the above technical problems need to be solved. SUMMARY

[0003] The present application aims at solving the problems in the prior art and provides a surface defect detection device for chain wheel.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a surface defect detection device for chain wheel, comprising a detection box, a conveying mechanism is installed on one side of the detection box, and a supporting block is fixedly connected inside the detection box, a detection groove is installed on the upper end of the supporting block, a material guiding mechanism is oppositely installed inside the detection groove, a detection mechanism is installed on one end of the material guiding mechanism on the upper end of the detection box, and a discharge port is formed on the other end of the detection box. The detection box is provided with an intelligent control assembly, which comprises a collection module, an analysis module and an execution module. The collection module acquires the temperature, concentration and soaking time data of the fluorescent detection liquid, acquires the ultrasonic parameter data, and transmits the acquired data to the analysis module. The analysis module receives the data transmitted by the acquisition module, analyzes the temperature, concentration and soaking time data of the fluorescent detection liquid, and obtains the comprehensive influence of the three factors on the permeability; according to the comprehensive influence, the influence value caused by single factor or double factor change is analyzed, the soaking time corresponding to the temperature and concentration is calculated, the soaking warning signal is generated, and the soaking warning signal is transmitted to the execution module; the lowest temperature of soaking is calculated combined with the ultrasonic parameter data, the temperature control signal is generated, and the temperature control signal is transmitted to the execution module; The analysis step of the analysis module is as follows: S1: detection liquid viscosity , is the viscosity at the initial temperature, is the detection liquid flow activation energy, is the gas constant; the defect permeability is negatively correlated with the viscosity, and the temperature influences the defect permeability, , is the temperature influence coefficient; the detection liquid concentration influences the defect permeability, , is the concentration gain coefficient, is the concentration saturation coefficient; the soaking time influences the defect permeability, , is the initial permeation resistance coefficient, is the characteristic permeation time; S2: assuming that temperature, concentration and time are three independent factors, the comprehensive influence of the three factors ; The execution module receives the signal transmitted by the analysis module and performs corresponding operation.

[0005] Preferably, the analysis step of the analysis module for comprehensive influence is as follows: S1: detection liquid viscosity ; the defect permeability is negatively correlated with the viscosity, and the temperature influences the defect permeability; the detection liquid concentration influences the defect permeability; and the soaking time influences the defect permeability. S2: assuming that temperature, concentration and time are three independent factors, the comprehensive influence of the three factors .

[0006] Preferably, the analysis step of the analysis module for single or double factor influence is as follows: K1: establish experiment, change one factor while keeping other two factors unchanged, and record the influence value caused by the change of the corresponding single factor , is the number of tests; the standard impact value caused by the change of a single factor is obtained by averaging the impact values ​​excluding extreme values, and then divided by the change amplitude of the corresponding factor to obtain the unit impact value of the corresponding factor. ; K2: Analyze the interaction between two factors and create a 3X3 table. The first row and the first column are each a factor. Fill in the corresponding defect penetration in other table positions. Calculate the difference in defect penetration before and after the corresponding factor changes (the change amplitude is the same), and calculate the difference between the two defect penetration differences as the interaction effect value between the two factors; and calculate the unit effect value of the corresponding factor. ; K3: When a single factor or two factors change, the corresponding change value can be estimated by multiplying the measured corresponding unit impact value by the change amplitude. , the final combined impact When demand When the sprocket is immersed in water, the corresponding estimated soaking time can be obtained according to the real-time temperature and the real-time concentration. When the soaking time reaches the estimated soaking time, a soaking warning signal is generated and transmitted to the execution module.

[0007] Preferably, the analysis module performs the following steps to analyze the soaking temperature: Q1: When the demand When the sprocket is used, the lowest temperature data that can meet the requirements can also be determined based on the range of the test liquid concentration and the soaking time data. ; Final temperature after ultrasonic action , is the initial low temperature, is the ultrasonic heating coefficient, is the ultrasonic power density, is the ultrasonic action time; Q2: Temperature change caused by ultrasonic wave ; Temperature range The corresponding temperature Get the value and filter to keep the satisfied The corresponding temperature value ;like The corresponding temperature values ​​within the range meet the , then take the minimum temperature For the lowest temperature data, a temperature control signal is generated and transmitted to the execution module.

[0008] Preferably, a plurality of sealing curtains are fixedly connected to the upper end of the detection box at the discharge port at equal distances downwards, a lighting assembly is installed on the inner wall of the upper end of the detection box inside the sealing curtain, and closed doors with self-locking function are installed on both sides of the detection box.

[0009] Preferably, the conveying mechanism comprises a support frame mounted below the sealed curtain detection box, a guard plate is mounted at the upper end of the support frame, a servo motor is mounted at one end of the guard plate, and conveying rollers are rotatably mounted at both ends inside the guard plate, and a conveying belt is sleeved on the upper end of the conveying rollers.

[0010] Preferably, the output end of the servo motor penetrates the guard plate and is coaxially fixed with one end of one of the conveying rollers, and a detector is mounted at the upper end of the guard plate.

[0011] Preferably, the material guiding mechanism comprises a supporting groove oppositely mounted above the detection groove, and guide rollers are rotatably mounted between the supporting grooves at equal intervals, and the guide rollers are at the same horizontal height as the discharge port.

[0012] Preferably, the detection mechanism comprises a positioning frame mounted at the other end of the detection groove, supporting plates are alternately mounted between the positioning frames, fixed rods are supported on the supporting plates, illuminators are mounted vertically downward from the detection box above the positioning frames, a fixed block is fixedly connected at one end of the detection box, a connecting rod is hingedly connected on the fixed block, a three-dimensional scanner is hingedly connected at the other end of the connecting rod, and dampers are arranged between the connecting rod and the fixed block and the three-dimensional scanner.

[0013] Compared with the prior art, the present application has the following advantages: Through the cooperation of the positioning block, the three-dimensional scanner and the connecting rod, the detection blind area can be eliminated, the missed detection of subtle defects can be reduced, the comprehensiveness of detection can be improved, and the function of omnidirectional defect detection can be realized; through the cooperation of the lighting assembly, the detection box and the sealing curtain, the defect recognition accuracy can be improved, the accuracy of detection can be improved, and the function of stable light-assisted detection can be realized; through the cooperation of the conveying mechanism and the material guiding mechanism, automatic continuous detection can be realized, the detection efficiency can be improved, and the function of chain wheel orderly conveying can be realized, thereby solving the problems of incomplete detection and low recognition accuracy of the existing surface defect detection device for chain wheels; Through the analysis module, the comprehensive influence of the three factors on the penetration degree is obtained according to the temperature, concentration and soaking time data of the fluorescent detection liquid; then the estimated soaking time is calculated according to the real-time temperature and concentration, the soaking time is automatically adjusted according to the specific situation of the chain wheel and the detection requirements, the fluorescent detection liquid is ensured to fully penetrate to the chain wheel surface defect, the defect display effect is improved, and the accuracy and reliability of the detection are improved; Through the analysis module combined with the detection liquid concentration, soaking time and ultrasonic parameters, the minimum temperature data meeting the requirements can be calculated, the suitable temperature range is screened out by considering the temperature change caused by ultrasonic heating, and the minimum value is taken as the minimum temperature data; the detection liquid can still effectively penetrate defects at a lower temperature, and the decomposition and volatilization of the detection liquid components are avoided, the detection liquid loss is reduced, and the detection cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings: Figure 1 The overall three-dimensional structure schematic diagram of the present application is provided; Figure 2 Another side overall three-dimensional structure schematic diagram of the present application is provided; Figure 3 The first perspective view of the local overall three-dimensional structure schematic diagram of the present application is provided; Figure 4 The second perspective view of the local overall three-dimensional structure schematic diagram of the present application is provided; Figure 5 The local overall side view structure schematic diagram of the present application is provided; Figure 6 The system flowchart of the present application is provided.

[0015] The serial number in the figure: 1, detection box; 2, closed door; 3, support frame; 4, guard plate; 5, detector; 6, servo motor; 7, sealing curtain; 8, bearing block; 9, detection groove; 10, bearing groove; 11, guide roller; 12, support plate; 13, positioning frame; 14, fixed rod; 15, fixed block; 16, three-dimensional scanner; 17, connecting rod; 18, lighting assembly; 19, illuminator. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0017] Example 1: see Figures 1 to 5The surface defect detection device for the chain wheel in the application comprises a detection box 1, a conveying mechanism is installed on one side of the detection box 1, a supporting block 8 is fixedly connected inside the detection box 1, a detection groove 9 is installed on the upper end of the supporting block 8, a material guiding mechanism is oppositely installed inside the detection groove 9, a detection mechanism is installed on one end of the material guiding mechanism on the upper end of the detection box 1, a discharge port is formed on the other end of the detection box 1, and the detection box 1, the conveying mechanism, the supporting block 8, the detection groove 9, the material guiding mechanism, the detection mechanism and the discharge port facilitate the rapid detection of the surface defects of the chain wheel.

[0018] In the application, the output end of the servo motor 6 is coaxially fixed with one end of one of the conveying rollers penetrating through the guard plate 4, the detector 5 is installed on the upper end of the guard plate 4, and the servo motor 6, the conveying roller and the detector 5 on the guard plate 4 facilitate the preliminary detection of the chain wheel during the conveying process. The detection mechanism comprises a positioning frame 13 installed on the other end of the detection groove 9, support plates 12 are staggeredly installed between the two positioning frames 13, a fixed rod 14 is supported on the support plates 12, an illuminator 19 is vertically downwardly installed on the detection box 1 above the fixed rod 14 and the positioning frame 13, a fixed block 15 is fixedly connected to one end of the detection box 1, a connecting rod 17 is hingedly installed on the fixed block 15, a three-dimensional scanner 16 is hingedly installed on the other end of the connecting rod 17, dampers are arranged between the two ends of the connecting rod 17 and the fixed block 15 and the three-dimensional scanner 16, and the illuminator 19, the fixed block 15, the connecting rod 17 and the three-dimensional scanner 16 facilitate the comprehensive detection of the surface defects of the chain wheel.

[0019] Working principle: when the application is used, first of all, the operator enters the detection box 1 from the two sides of the detection box 1 through the closed door 2 with a self-locking function, ensures that a relatively closed space is formed in the detection box 1, reduces the interference of external light and other factors on detection, simultaneously opens the lighting assembly 18 and the illuminator 19, and through swinging the connecting rod 17, the three-dimensional scanner 16 is in a position state convenient for detection, and the fluorescence detection liquid box can be placed in the positioning rack 13, then the external personnel observe the internal situation through the display screen, thereby placing the chain wheel box to be detected on the conveying belt, simultaneously starting the servo motor 6, driving the conveying roller to rotate through the output end, thereby conveying the chain wheel box to the sealing curtain 7 through the conveying belt, and the detector 5 detects the position and state of the chain wheel, ensures that the chain wheel meets the conditions for entering the detection box 1, and sends a reminder to the person inside the detection box 1, so that the person inside can pull the chain wheel box to be detected through the sealing curtain 7, and the guiding roller 11 can facilitate the person inside to place the chain wheel box in a position suitable for taking and detecting, when the person inside takes the chain wheel, first soaks the chain wheel in the fluorescence detection liquid, at this moment, the illuminator 19 facilitates the defects on the surface of the chain wheel to be more convenient for function, and the three-dimensional scanner 16 transmits the scanned surface information of the chain wheel to the related processing system, the system analyzes and processes the information, judges whether the surface of the chain wheel has defects, and simultaneously, the chain wheel with defects can be hung on the fixing rod 14 supported by the supporting plate 12, when the detection is completed, the chain wheel box can be pushed out through the discharge port or stacked inside the detection box 1.

[0020] Embodiment 2: see Figure 6 The inside of the detection box 1 is provided with a smart control assembly, and the smart control assembly comprises a collection module, an analysis module and an execution module; The collection module acquires fluorescence detection liquid temperature, concentration and soaking time data, acquires ultrasonic wave parameter data, and transmits the acquired data to the analysis module; The analysis module receives the data transmitted by the collection module, analyzes the fluorescence detection liquid temperature, concentration and soaking time data, obtains the comprehensive influence of the three factors on the penetration degree, analyzes the influence value caused by single factor or double factor change according to the comprehensive influence, calculates the soaking time under the corresponding temperature and concentration, generates a soaking warning signal, and transmits the soaking warning signal to the execution module; in combination with the ultrasonic wave parameter data, the lowest temperature of soaking is calculated, a temperature control signal is generated, and the temperature control signal is transmitted to the execution module; The collected data is sorted according to the collection time, and the corresponding items of data collected at the same time The mean and the standard deviation of the data are calculated, and the mean and the standard deviation are used to calculate the fluctuation range of the corresponding item of collected data The setting, the acquisition data of the corresponding item is compared with the fluctuation range of the corresponding item, the data of the corresponding item not in the fluctuation range is marked as an abnormal value, and the number of abnormal values is recorded , if , it is determined that the acquisition data is abnormal, and the detection of the data is re-performed; if , the abnormal value is removed, and the mean value of the detection data of the corresponding item remaining after the abnormal value is removed is calculated, and the calculated mean value is taken as the data of the corresponding item detected at the corresponding time; The detection of the data of the corresponding item is re-performed, and if the comparison result is still , it is determined that the acquisition device is abnormal, a device warning signal is generated, and the device warning signal is transmitted to the execution module; After receiving the device warning signal, the execution module controls the buzzer module of the intelligent control assembly to issue a buzzer warning, and controls the red light in the red, yellow and green three-color lamps to turn on, so as to facilitate the timely maintenance operation of the staff.

[0021] During the process of immersing the chain wheel in the fluorescent detection liquid in the container, the temperature of the "constant temperature immersion pool" is accurately maintained at the corresponding temperature, and the temperature fluctuation is too large to affect the activity of the fluorescent detection liquid; if the temperature is too high, the decomposition and volatilization of the detection liquid components may be accelerated, and the penetration and display effect of the detection liquid on the chain wheel defects are reduced; if the temperature is too low, the flowability of the detection liquid is poor, and it is difficult to fully penetrate into the micro defects, resulting in missed detection of defects; The immersion effect of the chain wheel is related to the temperature, concentration and immersion time of the fluorescent detection liquid; the temperature The flowability of the detection liquid is affected by changing the viscosity , , is the viscosity at the initial temperature, is the flow activation energy of the detection liquid, is the gas constant; the defect penetration degree is negatively related to the viscosity, so the defect penetration degree affected by the temperature , is the temperature influence coefficient; The concentration of the detection liquid is fixed , the immersion time , and there is no ultrasonic wave, 5-7 groups of different temperatures are set, under each temperature, a standard defect chain wheel (a defect with a known depth / width is prefabricated) is immersed, and the defect penetration degree is measured; according to formula, the least square method is used to fit ; When the concentration of the detection liquid is low, increasing the concentration of the detection liquid will cause the adsorption amount of the fluorescent agent to increase, the defect display to increase, and the defect penetration degree to increase; when the concentration of the detection liquid is high, increasing the concentration of the detection liquid The increase will lead to an increase in the viscosity of the test fluid, a decrease in fluidity, and a decrease in defect permeability. Simplifying the above relationship, we can obtain the defect permeability affected by the test fluid concentration. , is the concentration gain coefficient, is the concentration saturation coefficient; Fixed temperature , soaking time , without ultrasonic wave, set 5-7 groups of different concentrations, in each concentration, use standard defect sprocket (prefabricated defects with known depth / width) to immerse, and measure the defect penetration; according to Formula fitted using nonlinear regression and ; Concentration gain coefficient It mainly reflects the positive promotion effect of the detection liquid concentration on the defect penetration and fluorescence display effect in the low concentration range, and is used to quantify the gain amplitude of the defect display when the concentration increases by a unit amount; For example, it means that when the concentration of the test fluid is in a reasonable low concentration range (below the critical concentration that causes a significant increase in the viscosity of the test fluid), the penetration of the test fluid into the sprocket defect and the clarity of the subsequent fluorescence display can theoretically increase by 20% for every 1% increase in concentration; Soaking time The longer the soaking time, the more complete the penetration. However, there is a saturation upper limit, which conforms to the logarithmic saturation relationship. Therefore, the defect penetration affected by the soaking time is , is the initial penetration resistance coefficient, is the characteristic penetration time; Fixed temperature ,concentration , without ultrasonic wave, set 5-7 groups of different immersion time, in each group of time, use standard defect sprocket (prefabricated defect with known depth / width) to immerse, and measure the defect penetration; according to Formula fitted using nonlinear regression and ; Assuming that temperature, concentration and duration act independently, the combined effect of the three factors is ;temperature The concentration of the test solution must be lower than the decomposition temperature of the test solution; The concentration should be kept between the minimum concentration at which defects are displayed and the critical concentration at which viscosity increases sharply; the soaking time The duration corresponding to the minimum penetration must be maintained between the maximum allowable duration of the production line; However, in actual situations, the three factors affect each other. To establish an experiment, change one of the factors while keeping the other two factors unchanged, and record the impact value caused by the change of the corresponding single factor. , is the test number; the standard influence value caused by the change of a single factor is obtained by taking the mean value of the extreme values of the influence value, and divided by the change amplitude of the corresponding factor to obtain the unit influence value of the corresponding factor ; The interaction of two factors is analyzed, a 3X3 table is established, the first row and the first column are respectively one factor, the corresponding defect penetration is filled in the other table position, the defect penetration difference (the change amplitude is the same) before and after the change of the corresponding factor is calculated, and the difference between the two defect penetration differences is calculated as the interaction influence value between the two factors; the standard influence value caused by the change of the two factors is obtained by taking the mean value of the extreme values of the interaction influence value, and divided by the change amplitude of the corresponding factor to obtain the unit influence value of the corresponding factor ; Then when a single factor or double factor changes occurs, the corresponding change value can be estimated according to the measured unit influence value multiplied by the change amplitude The final comprehensive influence ; When the demand of the chain wheel, the corresponding estimated soaking time can be obtained according to the real-time temperature and real-time concentration, and when the soaking time reaches the estimated soaking time, a soaking warning signal is generated and transmitted to the execution module; The execution module controls the buzzer module of the intelligent control assembly to issue a buzzer warning after receiving the warning signal, and controls the yellow light of the red-yellow-green three-color light to turn on, so as to facilitate the timely maintenance operation of the staff.

[0022] When the demand of the chain wheel, the corresponding estimated soaking time can be obtained according to the detection liquid concentration and soaking time data range, and the minimum temperature data that can meet the demand ; Under low temperature conditions, the poor flowability of the detection liquid affects the defect penetration, and the flowability of the detection liquid can be improved by ultrasonic waves; the final temperature , is the initial low temperature, is the ultrasonic heat generation coefficient, is the ultrasonic power density, is the ultrasonic action time; the final temperature needs to be less than the temperature that keeps the detection liquid stable, and less than the temperature that affects the change of the chain wheel; The fixed temperature , concentration , soaking time , set 3-5 groups of different ultrasonic power and 3-5 groups of action time; under each group of parameters, the temperature sensor measures the detection liquid temperature rise amplitude ; according to the formula is fitted by the least square method ; Temperature change amount of ultrasonic action ; to the temperature range The corresponding temperature value The value is obtained, and the corresponding temperature value that meets ; if The corresponding temperature value in the range meets , the minimum temperature value The lowest temperature data is taken as the minimum temperature data, a temperature control signal is generated, and the temperature control signal is transmitted to the execution module; After receiving the temperature control signal, the execution module transmits the lowest temperature data to the temperature control device through the transmission module in the intelligent control component, so that the temperature at the fluorescent detection liquid soaking position is maintained at the lowest temperature.

[0023] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical solution and the inventive concept of the present application, within the technical range disclosed by the present application, makes equivalent replacement or change, which should be covered within the protection scope of the present application.​

Claims

1. A surface defect detection device for a sprocket, comprising a detection box (1), characterized in that: A conveying mechanism is installed on one side of the detection box (1), and a supporting block (8) is fixed inside the detection box (1), a detection groove (9) is installed on the upper end of the supporting block (8), and a material guide mechanism is installed relatively inside the detection groove (9), a detection mechanism is installed on the upper end of the detection box (1) at one end of the material guide mechanism, and a discharge port is opened at the other end of the detection box (1); An intelligent control component is provided inside the detection box (1), and the intelligent control component includes a collection module, an analysis module and an execution module; The acquisition module acquires the temperature, concentration, and immersion time data of the fluorescent detection liquid, as well as the ultrasonic parameter data, and transmits the acquired data to the analysis module; The analysis module receives the data transmitted by the acquisition module and analyzes the temperature, concentration, and immersion time data of the fluorescent detection liquid to obtain the comprehensive impact of the three factors on the permeability; based on the comprehensive impact, it analyzes the impact value caused by the change of single or double factors, calculates the immersion time under the corresponding temperature and concentration, generates an immersion warning signal, and transmits the immersion warning signal to the execution module; combines the ultrasonic parameter data to calculate the minimum immersion temperature, generates a temperature control signal, and transmits the temperature control signal to the execution module; The steps for comprehensive impact analysis by the analysis module are as follows: S1: Test fluid viscosity , is the viscosity at the initial temperature, To detect the activation energy of liquid flow, is the gas constant; the defect permeability is negatively correlated with the viscosity, so the temperature The defect penetration affected is , is the temperature influence coefficient; the concentration of the test solution The defect penetration affected is , is the concentration gain coefficient, is the concentration saturation coefficient; soaking time The defect penetration affected is , is the initial penetration resistance coefficient, is the characteristic penetration time; S2: Assuming that temperature, concentration and duration act independently, the combined effect of the three factors is ; The execution module receives the signal transmitted by the analysis module and performs corresponding operations.

2. A surface defect detection device for a sprocket according to claim 1, characterized in that: The steps for comprehensive impact analysis by the analysis module are as follows: S1: Test fluid viscosity ; The defect permeability is negatively correlated with the viscosity, so the defect permeability affected by temperature is ; The defect penetration affected by the concentration of the test solution is ; The defect penetration affected by immersion time is ; S2: Assuming that temperature, concentration and duration act independently, the combined effect of the three factors is .

3. The surface defect detection device for a sprocket according to claim 1, characterized in that: The analysis module performs the following steps to analyze the impact of single and double factors: K1: Set up an experiment to change one of the factors while keeping the other two factors unchanged, and record the impact of the change in the corresponding single factor. , is the number of trials; The standard impact value caused by the change of a single factor is obtained by averaging the impact values ​​​​excluding extreme values, and then divided by the change amplitude of the corresponding factor to obtain the unit impact value of the corresponding factor. ; K2: Analyze the interaction between two factors and create a 3X3 table. The first row and the first column are each a factor. Fill in the corresponding defect penetration in other positions of the table. Calculate the difference in defect penetration before and after the corresponding factor changes (the change amplitude is the same), and calculate the difference between the two defect penetration differences as the interaction effect value between the two factors; and calculate the unit effect value of the corresponding factor. ; K3: When a single factor or two factors change, the corresponding change value can be estimated by multiplying the measured corresponding unit impact value by the change amplitude. , the final combined impact ; When demand When the sprocket is immersed in water, the corresponding estimated soaking time can be obtained according to the real-time temperature and the real-time concentration. When the soaking time reaches the estimated soaking time, a soaking warning signal is generated and transmitted to the execution module.

4. The surface defect detection device for a sprocket according to claim 1, characterized in that: The analysis steps for the immersion temperature analysis module are as follows: Q1: When the demand When the sprocket is used, the lowest temperature data that can meet the requirements can also be determined based on the range of the test liquid concentration and the soaking time data. ; Final temperature after ultrasonic action , is the initial low temperature, is the ultrasonic heating coefficient, is the ultrasonic power density, is the ultrasonic action time; Q2: Temperature change caused by ultrasonic wave ; Temperature range The corresponding temperature Get the value and filter to keep the satisfied The corresponding temperature value ;like The corresponding temperature values ​​within the range meet the , then take the minimum temperature For the lowest temperature data, a temperature control signal is generated and transmitted to the execution module.

5. The surface defect detection device for a sprocket according to claim 1, characterized in that: The detection box (1) at the upper end of the discharge port is fixed with a plurality of sealing curtains (7) at equal intervals downwards, and a lighting assembly (18) is installed on the inner wall of the upper end of the detection box (1) inside the sealing curtains (7). Both sides of the detection box (1) are installed with closed doors (2) with a self-locking function.

6. The surface defect detection device for a sprocket according to claim 5, characterized in that: The conveying mechanism comprises a support frame (3) installed below the detection box (1) outside 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 at one end of the guard plate (4), and conveying rollers are rotatably installed at both ends of the guard plate (4), and a conveyor belt is provided on the upper end of the conveying roller.

7. The surface defect detection device for a sprocket 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 a sprocket according to claim 1, characterized in that: The material guiding mechanism comprises a supporting groove (10) relatively mounted above the detection groove (9), and guide rollers (11) are equidistantly mounted between the supporting grooves (10) on both sides, and the guide rollers (11) are at the same level as the discharge port.

9. The surface defect detection device for a sprocket 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 staggeredly installed between the positioning frames (13) on both sides, and a fixing rod (14) is supported on the support plate (12). An irradiator (19) is installed vertically downward on the detection box (1) above the fixing rod (14) and the positioning frame (13), and a fixing block (15) is fixedly connected to one end of the detection box (1), and a connecting rod (17) is relatively hingedly installed on the fixing block (15). A three-dimensional scanner (16) is hingedly installed on the other end of the connecting rod (17), and 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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