An apparatus and method for automated detection of surface defects in a sliding bearing

Abstract

The application is suitable for the field of sliding bearing defect detection, and provides a sliding bearing surface defect automatic detection equipment and method, wherein the sliding bearing surface defect automatic detection equipment comprises a detection table, the middle part of the detection table is provided with a belt conveyor, one end of the detection table is provided with two guide plates, and the two guide plates are oppositely arranged on the two sides of the belt conveyor; the upper end surface of the detection table is fixedly connected with a fixing frame, the fixing frame is connected with a guide mechanism and a dust removal mechanism, the guide mechanism can guide the sliding bearing, and the guide mechanism is connected with a impurity removal mechanism. In the application, the processing module of the regulation system can analyze data according to the motion trail, motion speed and vibration condition of the external environment before the sliding bearing is detected, and generate control information; the control module can control and adjust the driving mechanism and the lighting assembly according to the control information.

Description

Technical Field

[0001] This invention belongs to the field of sliding bearing defect detection, and particularly relates to an automated detection device for surface defects in sliding bearings. Background Technology

[0002] A sliding bearing is a bearing that operates under sliding friction. Sliding bearings operate smoothly, reliably, and quietly. Under liquid lubrication conditions, the sliding surfaces are separated by lubricating oil and do not come into direct contact, reducing friction loss and surface wear. The part of the shaft supported by the bearing is called the journal, and the part that mates with the journal is called the bearing bush. The anti-friction material layer cast onto the inner surface of the bearing bush to improve its frictional properties is called the bearing liner.

[0003] Existing sliding bearings require inspection during production to prevent bearings with extrusion deformation or surface scratches from entering the market. Current automated surface defect inspection equipment for sliding bearings typically requires placing the bearings on a belt conveyor until they reach the bottom of an industrial camera for inspection. As some sliding bearings come into contact with and collide with the sidewalls of the worktable during transport, variations in their speed and trajectory are inevitable, and changes in the lighting conditions on the bearing surface can also occur, thus affecting the inspection accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide an automated inspection device for surface defects of sliding bearings, which aims to solve the technical problem that changes in the illumination conditions of the sliding bearing surface after the sliding bearing comes into contact with and collides with the side wall of the worktable during transportation, thereby affecting the inspection accuracy of the sliding bearing.

[0005] The present invention is implemented as follows: an automated inspection device for surface defects of sliding bearings includes an inspection table, a belt conveyor is provided in the middle of the inspection table, and two guide plates are provided at one end of the inspection table, with the two guide plates being arranged opposite each other on both sides of the belt conveyor.

[0006] The upper surface of the testing platform is fixedly connected to a fixed frame, which is connected to a guide mechanism and a dust removal mechanism. The guide mechanism can guide the sliding bearing, and the guide mechanism is connected to a debris removal mechanism, which can clean the debris on the surface of the guide mechanism.

[0007] The dust removal mechanism is located in the middle of the guide mechanism, and the dust removal mechanism can lubricate the guide mechanism and clean up debris;

[0008] The upper surface of the detection platform is fixedly connected to an outer cover. The outer cover is located on the side of the guide mechanism away from the guide plate. A drive mechanism is provided in the outer cover. The drive mechanism is connected to a CCD camera. The drive mechanism can drive the CCD camera to move horizontally. Illumination components are provided on all four sides of the CCD camera. The illumination components can change their own illumination range and illumination intensity.

[0009] The control system includes:

[0010] The monitoring module can monitor the motion trajectory, speed, and vibration of the external environment during the motion of the sliding bearing.

[0011] The processing module can analyze data based on the motion trajectory, speed, and vibration of the external environment before the sliding bearing is detected, and generate control information.

[0012] The control module can control and adjust the drive mechanism and lighting components based on control information.

[0013] A further technical solution is that the monitoring module includes: a first speed sensor, a second speed sensor, two vibration sensors, and a noise sensor;

[0014] The first speed sensor is fixed between two guide plates, the second speed sensor is fixedly connected to the side of the fixing frame near the outer cover, both vibration sensors are fixedly connected to the guide mechanism, and the noise sensor is connected to the inner wall of the outer cover.

[0015] In a further technical solution, the processing module includes a data processor, and the data processing method of the data processor is as follows:

[0016] The calculation method for the light intensity of the lighting component is as follows:

[0017] ;

[0018] L t Real-time light intensity (unit: lux), which is the lighting intensity that needs to be dynamically adjusted according to the speed of the object;

[0019] V0 is the initial velocity (in m / s) when the sliding bearing has not yet entered the middle of the guide mechanism, which is the value of the first speed sensor;

[0020] V t The real-time speed (in m / s) of the sliding bearing before testing is the value of the second speed sensor; L is the reference light intensity (in lux), which is the standard light intensity corresponding to the initial speed V.

[0021] In high-speed scenes, the exposure time needs to be shortened to prevent motion blur. Based on experience, for every 1-fold reduction in exposure time, the light source intensity needs to be increased by 1-fold to compensate for the loss of light intake.

[0022] The calculation method for the illumination range of the lighting component is as follows:

[0023] ;

[0024] X represents the adjustment distance of the lighting component's illumination range (in cm);

[0025] K is the influence coefficient of vibration frequency on illumination range, which is an empirical value, taken as 0.1 = 0.2;

[0026] f t This is the average of the real-time vibration frequency values ​​of the two vibration sensors (in Hz).

[0027] f0 is the upper limit of the vibration frequency under illumination conditions (unit: Hz);

[0028] In high-frequency vibration scenarios, the exposure time needs to be shortened to reduce motion blur, but too short an exposure time will reduce the number of photons received by the sensor, so it is necessary to increase the luminous flux by expanding the illumination area.

[0029] The control module is based on L t The value of X adjusts the light intensity and illumination range of the lighting components;

[0030] The data processor can also calculate the frequency difference between the two vibration sensors. When the frequency difference between the two vibration sensors exceeds the preset frequency difference threshold in the data processor, the drive mechanism drives the CCD camera to move a fixed distance toward the vibration sensor with the higher frequency value.

[0031] In a further technical solution, the guiding mechanism includes a connecting frame, a guide roller, a No. 1 motor, a tensioning assembly, a guide belt, and an adjusting assembly;

[0032] Two connecting frames are slidably connected to the fixed frame. Guide rollers are rotatably connected to both ends of each connecting frame. A No. 1 motor is fixedly connected to one end of each connecting frame. The output shaft of the No. 1 motor is fixedly connected to a guide roller. A tensioning component is provided in the middle of the connecting frame. A guide belt surrounds the tensioning component and the two guide rollers. A foam sound-absorbing board is provided in the middle of the connecting frame. A vibration sensor is fixedly connected to the connecting frame and contacts the guide belt. The tensioning component can tension the guide belt. An adjusting component is provided between the two connecting frames. The adjusting component can drive the two connecting frames to move relative to each other.

[0033] In a further technical solution, the tensioning assembly includes a sliding seat, a tensioning roller, a first electric telescopic rod, and a first spring;

[0034] A guide rail is fixedly connected to the middle of the connecting frame, a sliding seat is slidably connected in the guide rail, a first electric telescopic rod is fixedly connected to the guide rail, a protrusion is fixedly connected to the telescopic end of the first electric telescopic rod, a first spring is connected between the protrusion and the sliding seat, and a tension roller is rotatably connected to the bottom of the sliding seat.

[0035] In a further technical solution, the adjustment component includes a second motor and a second motor. The second motor is fixedly connected to the upper end face of the fixed frame. The output shaft of the second motor is fixedly connected to a bidirectional threaded rod, and the bidirectional threaded rod is threadedly connected to two connecting frames at the same time.

[0036] A further technical solution is that the dust removal mechanism includes a filter box, an electric telescopic cylinder, a perforated plate, a rubber brush head, an electric telescopic sleeve, and an air suction pump;

[0037] The filter box is fixedly connected to the frame. An electric telescopic cylinder is fixedly connected to the bottom of the filter box. A perforated plate is fixedly connected to the telescopic end of the electric telescopic cylinder. The filter box is connected to the perforated plate through the electric telescopic cylinder. A filter screen is installed in the filter box. Multiple rubber brush heads are distributed at the bottom of the perforated plate. An electric telescopic sleeve is also fixedly connected to the bottom of the perforated plate. An air suction pump is connected to the filter box.

[0038] In a further technical solution, the driving mechanism includes a No. 3 motor, a one-way threaded rod, and a slider;

[0039] The No. 3 motor is fixedly connected to the outer cover. The output shaft of the No. 3 motor is fixedly connected to a one-way threaded rod. The one-way threaded rod is threadedly connected to a slider. The slider is slidably connected to the inner top surface of the outer cover. A CCD camera is fixedly connected to the bottom of the slider.

[0040] A further technical solution is that the impurity removal mechanism includes a No. 3 electric telescopic rod, a No. 4 motor, a rubber roller, and a guide hole;

[0041] The guide rail is fixedly connected to a No. 3 electric telescopic rod, and the telescopic end of the No. 3 electric telescopic rod is fixedly connected to a No. 4 motor. The output shaft of the No. 4 motor is fixedly connected to a rubber roller. The rubber roller has multiple guide holes along its length, and an oil bladder is provided in the rubber roller. The oil bladder is filled with lubricating oil and has an oil outlet hole.

[0042] An automated detection method for surface defects in sliding bearings, applied to the automated detection device for surface defects in sliding bearings in the above embodiments, includes the following steps:

[0043] S1: Place the sliding bearing on the belt conveyor. The sliding bearing moves forward with the belt conveyor. Then, under the guidance of the guide plate, the sliding bearing enters the guide mechanism, which limits the sliding bearing.

[0044] S2: In the center of the guide mechanism, the dust removal mechanism lubricates the guide mechanism and removes debris, reducing the friction between the sliding bearing and the guide mechanism, thereby reducing the noise and vibration caused by friction;

[0045] S3: The processing module can control and adjust the drive mechanism and lighting components based on the motion trajectory, speed, and vibration of the external environment before the sliding bearing is detected;

[0046] S4: The CCD camera inspects the sliding bearing.

[0047] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0048] 1. The present invention provides an automated detection device for surface defects of sliding bearings. The monitoring module can monitor the movement trajectory, movement speed, and vibration of the external environment during movement of the sliding bearing; the processing module can analyze the data based on the movement trajectory, movement speed, and vibration of the external environment before the sliding bearing is detected, and generate control information; the control module can control and adjust the drive mechanism and lighting components based on the control information.

[0049] 2. The present invention provides an automated detection device for surface defects of sliding bearings. When the sliding bearing is being detected, the control system can calculate the real-time light intensity L based on the change in the moving speed of the sliding bearing. t The system adjusts the light intensity of the lighting components in real time based on the value of the light sensor; and when the second speed sensor detects that the speed reduction value of the sliding bearing exceeds the preset speed threshold in the data processor, the control system can control the adjustment component to drive the two connecting frames to move in opposite directions, thereby reducing the limit of the guide belt on the sliding bearing; at the same time, the control system controls the electric telescopic cylinder to retract, thereby reducing the squeezing force between the rubber brush head and the sliding bearing, and reducing the resistance of the rubber brush head on the sliding bearing.

[0050] 3. The present invention provides an automated detection device for surface defects of sliding bearings. The control system can calculate the value of the adjustment distance X0, thereby adjusting the illumination range of the lighting components according to the vibration of the guide belt. Specifically, according to the value of X0 calculated by the data processor, each of the second electric telescopic rods is extended. All the second electric telescopic rods drive the arc lamp tubes to move through the fixed rods they are connected to. At this time, the illumination range of all the arc lamp tubes can be adjusted. When the vibration frequency of the guide belt 35 on both sides of the sliding bearing is too large, increasing the illumination range of the arc lamp tubes can avoid the light from being too concentrated, causing the light to scatter and reflect, thus affecting the detection accuracy of the CCD camera.

[0051] 4. The present invention provides an automated detection device for surface defects of sliding bearings. The data processor can also calculate the frequency difference between two vibration sensors. When the frequency difference between the two vibration sensors exceeds the preset frequency difference threshold in the data processor, the drive mechanism drives the CCD camera to move a fixed distance toward the vibration sensor with the higher frequency value. Furthermore, the control system controls the extension of the third electric telescopic rod, which drives the rubber roller to press against the guide belt. The fourth motor drives the rubber roller to rotate, and the rubber roller removes particulate impurities from the outer surface of the guide belt. Simultaneously, under the squeezing force between the rubber roller and the guide belt, the oil outlet of the oil bladder in the rubber roller expands, and lubricating oil flows out of the oil bladder. The rubber roller applies lubricating oil to the outer surface of the guide belt, thereby reducing the friction between the guide belt and the sliding bearing. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the structure of the present invention;

[0053] Figure 2 This is a schematic diagram showing the positions of the guiding mechanism and the dust removal mechanism in this invention;

[0054] Figure 3 This is a schematic diagram of the guiding mechanism in this invention;

[0055] Figure 4 This is a schematic diagram of the tensioning component in this invention;

[0056] Figure 5 This is a schematic diagram of the impurity removal mechanism in this invention;

[0057] Figure 6 This is a schematic diagram of the dust removal mechanism in this invention;

[0058] Figure 7 This is a schematic diagram of the structure of the perforated plate and the rubber brush head in this invention;

[0059] Figure 8 This is a schematic diagram of the internal structure of the outer cover in this invention.

[0060] In the attached diagram: 1. Testing table; 2. Belt conveyor; 3. Guiding mechanism; 31. Connecting frame; 32. Guide roller; 33. Motor No. 1; 34. Tensioning assembly; 341. Sliding seat; 342. Tensioning roller; 343. Electric telescopic rod No. 1; 344. Spring No. 1; 35. Guide belt; 36. Adjusting assembly; 361. Motor No. 2; 362. Bidirectional threaded rod; 37. Guide rail; 4. Dust removal mechanism; 41. Filter box; 42. Electric telescopic cylinder; 43. Perforated plate; 44. Rubber brush head; 45. 46. ​​Electric telescopic sleeve; 5. Suction pump; 6. Drive mechanism; 7. Motor No. 3; 8. One-way threaded rod; 9. Slider; 10. Lighting assembly; 11. Electric telescopic rod No. 2; 12. Fixing rod; 13. Curved lamp tube; 14. Impurity removal mechanism; 15. Electric telescopic rod No. 3; 16. Motor No. 4; 17. Rubber roller; 18. Guide hole; 19. Speed ​​sensor No. 1; 10. Speed ​​sensor No. 2; 11. Outer cover; 12. Guide plate; 13. Fixing frame; 14. CCD camera; 15. Foam sound-absorbing board. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0062] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0063] like Figures 1-8 As shown, an automated inspection device for surface defects of sliding bearings includes an inspection table 1, a belt conveyor 2 is provided in the middle of the inspection table 1, and two guide plates 11 are provided at one end of the inspection table 1. The two guide plates 11 are arranged opposite to each other on both sides of the belt conveyor 2.

[0064] The upper end face of the testing platform 1 is fixedly connected to a fixing frame 12. The fixing frame 12 is connected to a guide mechanism 3 and a dust removal mechanism 4. The guide mechanism 3 can guide the sliding bearing. The guide mechanism 3 is connected to a debris removal mechanism 7, which can clean the debris on the surface of the guide mechanism 3.

[0065] The dust removal mechanism 4 is located in the middle of the guide mechanism 3, and the dust removal mechanism 4 can lubricate the guide mechanism 3 and clean up debris.

[0066] The upper surface of the detection platform 1 is fixedly connected to an outer cover 10. The outer cover 10 is located on the side of the guide mechanism 3 away from the guide plate 11. A drive mechanism 5 is provided in the outer cover 10. The drive mechanism 5 is connected to a CCD camera 13. The drive mechanism 5 can drive the CCD camera 13 to move horizontally. Illumination components 6 are provided on all four sides of the CCD camera 13. The illumination components 6 can change their own illumination range and illumination intensity.

[0067] The control system includes:

[0068] The monitoring module is capable of monitoring the motion trajectory, speed, and vibration of the external environment during the motion of the sliding bearing.

[0069] The processing module is capable of analyzing data based on the motion trajectory, speed, and vibration of the external environment before the sliding bearing is detected, and generating control information.

[0070] The control module can control and adjust the drive mechanism 5 and the lighting component 6 according to the control information.

[0071] An automated method for detecting surface defects in sliding bearings includes the following steps:

[0072] S1: Place the sliding bearing on the belt conveyor 2. The sliding bearing moves forward with the belt conveyor 2. Then, under the guidance of the guide plate 11, the sliding bearing enters the guide mechanism 3. The guide mechanism 3 limits the sliding bearing.

[0073] S2: In the center of the guide mechanism 3, the dust removal mechanism 4 lubricates the guide mechanism 3 and removes debris, reducing the friction between the sliding bearing and the guide mechanism 3, thereby reducing the noise and vibration caused by friction.

[0074] S3: The processing module can control and adjust the drive mechanism 5 and the lighting component 6 based on the motion trajectory, speed, and vibration of the external environment before the sliding bearing is detected;

[0075] S4: CCD camera 13 inspects the sliding bearing.

[0076] like Figure 1 and Figure 2 As shown, in a preferred embodiment of the present invention, the monitoring module includes: a first speed sensor 8, a second speed sensor 9, two vibration sensors and a noise sensor;

[0077] The first speed sensor 8 is fixed between two guide plates 11, the second speed sensor 9 is fixedly connected to the side of the fixing frame 12 near the outer cover 10, both vibration sensors are fixedly connected to the guide mechanism 3, and the noise sensor is connected to the inner wall of the outer cover 10.

[0078] In a preferred embodiment of the present invention, the processing module includes a data processor, and the data processing method of the data processor is as follows:

[0079] The calculation method for the light intensity of the lighting component 6 is as follows:

[0080] ;

[0081] L t Real-time light intensity (unit: lux), which is the lighting intensity that needs to be dynamically adjusted according to the speed of the object;

[0082] V0 is the initial velocity (in m / s) when the sliding bearing has not entered the middle of the guide mechanism 3, which is the value of the first speed sensor 8;

[0083] V t The real-time speed (in m / s) of the sliding bearing before it is to be tested is the value of the second speed sensor 9.

[0084] L0 is the reference light intensity (unit: lux), which is the standard illumination intensity corresponding to the initial velocity V0;

[0085] In high-speed scenes, the exposure time needs to be shortened to prevent motion blur. Based on experience, for every 1-fold reduction in exposure time, the light source intensity needs to be increased by 1-fold to compensate for the loss of light intake.

[0086] The calculation method for the illumination range of the lighting component 6 is as follows:

[0087] ;

[0088] X0 represents the adjustment distance (in cm) for the illumination range of lighting component 6.

[0089] K is the influence coefficient of vibration frequency on illumination range, which is an empirical value, ranging from 0.1 to 0.2;

[0090] f t This is the average of the real-time vibration frequency values ​​of the two vibration sensors (in Hz).

[0091] f0 is the upper limit of the vibration frequency under illumination conditions (unit: Hz);

[0092] In high-frequency vibration scenarios, the exposure time needs to be shortened to reduce motion blur, but too short an exposure time will reduce the number of photons received by the sensor, so it is necessary to increase the luminous flux compensation by expanding the illumination area.

[0093] The control module is based on L t The value of X0 adjusts the light intensity and illumination range of the lighting component 6;

[0094] The data processor can also calculate the frequency difference between the two vibration sensors. When the frequency difference between the two vibration sensors exceeds the preset frequency difference threshold in the data processor, the drive mechanism 5 drives the CCD camera 13 to move a fixed distance toward the vibration sensor with the higher frequency value.

[0095] In this embodiment, the sliding bearing is guided by the guide mechanism 3. During the guiding process, frictional resistance inevitably occurs between the sliding bearing and the guide mechanism 3 and the dust removal mechanism 4, causing changes in the moving speed of the sliding bearing. Since adjusting the illumination angle and intensity in real time according to the object's movement trajectory is a key technology for achieving high-precision imaging in industrial inspection scenarios, especially suitable for the dynamic detection needs of the linear CCD camera 13 for high-speed, irregularly moving targets, in this embodiment, when the sliding bearing is being detected, the control system can calculate the real-time light intensity L based on the change in the sliding bearing's moving speed. t The value is used to adjust the light intensity of the lighting component 6 in real time;

[0096] Furthermore, since the guide mechanism 3 guides the movement trajectory of the sliding bearing, the vibration of the guide mechanism 3 will directly affect the lighting conditions during the detection of the sliding bearing. In order to reduce the motion blur caused by the vibration, in this embodiment, the control system can calculate the value of the adjustment distance X0, thereby adjusting the lighting range of the lighting component 6 according to the vibration of the guide mechanism 3.

[0097] Furthermore, when the frequency difference between the two vibration sensors exceeds the preset frequency difference threshold in the data processor, it indicates that the moving trajectory of the sliding bearing is deviated to the side of the guide mechanism 3. In this embodiment, the drive mechanism 5 is activated to drive the CCD camera 13 to move synchronously to the side of the sliding bearing that is deviated, thereby adjusting the positional deviation between the CCD camera 13, the illumination component 6 and the sliding bearing, and improving the detection accuracy of the CCD camera 13.

[0098] like Figure 2 and Figure 3 As shown, in a preferred embodiment of the present invention, the guiding mechanism 3 includes a connecting frame 31, a guide roller 32, a first motor 33, a tensioning assembly 34, a guide belt 35, and an adjusting assembly 36;

[0099] Two connecting frames 31 are slidably connected to the fixed frame 12. Each connecting frame 31 has a guide roller 32 rotatably connected to both ends. A motor 33 is fixedly connected to one end of each connecting frame 31. The output shaft of the motor 33 is fixedly connected to a guide roller 32. A tensioning component 34 is provided in the middle of the connecting frame 31. A guide belt 35 surrounds the tensioning component 34 and the two guide rollers 32. A foam sound-absorbing board 14 is provided in the middle of the connecting frame 31. A vibration sensor is fixedly connected to the connecting frame 31 and contacts the guide belt 35. The tensioning component 34 can tension the guide belt 35. An adjusting component 36 is provided between the two connecting frames 31. The adjusting component 36 can drive the two connecting frames 31 to move relative to each other.

[0100] In this embodiment, two No. 1 motors 33 are started, and the two No. 1 motors 33 drive the guide rollers 32 connected to them to rotate. At this time, driven by the guide rollers 32, two guide belts 35 move along the forward direction of the sliding bearing on both sides of the sliding bearing. The two guide belts 35 guide the movement trajectory of the sliding bearing, and the two guide belts 35 can block external light and dust on both sides of the sliding bearing, thereby further improving the detection accuracy of the sliding bearing.

[0101] When the sliding bearing deviates significantly to one side, the control system can control the drive mechanism 5 to move the CCD camera 13 and the illumination component 6 synchronously, thereby reducing the positional deviation between the CCD camera 13, the illumination component 6 and the sliding bearing, and further improving the detection accuracy of the sliding bearing. In addition, the control system can also control the tensioning component 34 to tension the guide belt 35. At this time, the control system synchronously controls the adjustment component 36, which drives the two connecting frames 31 to move relative to each other, thereby improving the guiding accuracy of the sliding bearing.

[0102] like Figure 4 As shown, in a preferred embodiment of the present invention, the tensioning assembly 34 includes a sliding seat 341, a tensioning roller 342, a first electric telescopic rod 343, and a first spring 344.

[0103] A guide rail 37 is fixedly connected to the middle of the connecting frame 31. A sliding seat 341 is slidably connected in the guide rail 37. A first electric telescopic rod 343 is fixedly connected to the guide rail 37. A protrusion is fixedly connected to the telescopic end of the first electric telescopic rod 343. A first spring 344 is connected between the protrusion and the sliding seat 341. A tension roller 342 is rotatably connected to the bottom of the sliding seat 341.

[0104] In this embodiment, the first electric telescopic rod 343 is activated. The first electric telescopic rod 343 pushes the sliding seat 341 through the first spring 344. The sliding seat 341 drives the tension roller 342 to tension and limit the guide belt 35. The tension of the guide belt 35 can be adjusted by the contraction movement of the first electric telescopic rod 343, thereby improving the guiding accuracy of the sliding shaft. During this process, the extrusion pressure between the guide belt 35 and the foam sound-absorbing plate 14 increases. The foam sound-absorbing plate 14 can increase the stability of the guide belt 35 and reduce the vibration and noise of the guide belt 35 during movement.

[0105] Figure 2 As shown, in a preferred embodiment of the present invention, the adjustment component 36 includes a second motor 361 and a second motor 361. The second motor 361 is fixedly connected to the upper end face of the fixed frame 12. The output shaft of the second motor 361 is fixedly connected to a bidirectional threaded rod 362. The bidirectional threaded rod 362 is threadedly connected to two connecting frames 31 at the same time.

[0106] In this embodiment, the second motor 361 is started, which drives the bidirectional threaded rod 362 to rotate. The bidirectional threaded rod 362 drives the two connecting frames 31 to move relative to each other or towards each other. When the second speed sensor 9 detects that the speed change of the sliding bearing is too large, the control system can control the adjustment component 36 to drive the two connecting frames 31 to move towards each other, thereby reducing the limit of the guide belt 35 on the sliding bearing.

[0107] like Figure 6 and Figure 7 As shown, in a preferred embodiment of the present invention, the dust removal mechanism 4 includes a filter box 41, an electric telescopic cylinder 42, a perforated plate 43, a rubber brush head 44, an electric telescopic sleeve 45, and an air suction pump 46.

[0108] The filter box 41 is fixedly connected to the fixing frame 12. An electric telescopic cylinder 42 is fixedly connected to the bottom of the filter box 41. A perforated plate 43 is fixedly connected to the telescopic end of the electric telescopic cylinder 42. The filter box 41 is connected to the perforated plate 43 through the electric telescopic cylinder 42. A filter screen is provided in the filter box 41. Multiple rubber brush heads 44 are distributed at the bottom of the perforated plate 43. An electric telescopic sleeve 45 is also fixedly connected to the bottom of the perforated plate 43. An air suction pump 46 is connected to the filter box 41.

[0109] In this embodiment, the electric telescopic cylinder 42 is activated to extend, and the electric telescopic cylinder 42 drives the perforated plate 43 to move down. The perforated plate 43 drives all the rubber brush heads 44 to clean the surface of the sliding bearing. At the same time, the suction pump 46 is activated to draw air outward. The perforated plate 43 draws the dust and impurities on the surface of the sliding bearing and the guide belts 35 on both sides into the filter box 41. After being filtered and collected in the filter box 41, the suction pump 46 discharges the air outward.

[0110] When the second speed sensor 9 detects a large change in the speed of the sliding bearing, the control system controls the electric telescopic cylinder 42 to retract, thereby reducing the squeezing force between the rubber brush head 44 and the sliding bearing, and reducing the resistance of the rubber brush head 44 to the sliding bearing.

[0111] When the electric telescopic sleeve 45 is retracted, the airflow of the orifice plate 43 is dispersed to both sides, which can increase the absorption and cleaning of dust on the guide belt 35. When the electric telescopic sleeve 45 is extended, the airflow of the orifice plate 43 is concentrated at the sliding bearing, which can improve the cleaning effect of dust on the surface of the sliding bearing.

[0112] like Figure 8 As shown, in a preferred embodiment of the present invention, the driving mechanism 5 includes a No. 3 motor 51, a one-way threaded rod 52, and a slider 53;

[0113] The No. 3 motor 51 is fixedly connected to the outer cover 10. The output shaft of the No. 3 motor 51 is fixedly connected to a one-way threaded rod 52. The one-way threaded rod 52 is threadedly connected to a slider 53. The slider 53 is slidably connected to the inner top surface of the outer cover 10. The bottom of the slider 53 is fixedly connected to a CCD camera 13.

[0114] In this embodiment, motor 51 is started, which drives the one-way threaded rod 52 to rotate. The one-way threaded rod 52 drives the slider 53 to slide horizontally inside the outer cover 10. The slider 53 drives the CCD camera 13 and the lighting component 6 to adjust their positions.

[0115] Figure 8 As shown, in a preferred embodiment of the present invention, the lighting assembly 6 includes a second electric telescopic rod 61, a fixed rod 62, and an arc-shaped lamp tube 63;

[0116] The side wall of the slider 53 is fixedly connected with a second electric telescopic rod 61 at equal intervals. The telescopic end of the second electric telescopic rod 61 is fixedly connected with a fixed rod 62. The lower end of the fixed rod 62 is fixedly connected with an arc-shaped lamp tube 63.

[0117] In this embodiment, the value of X0 is calculated by the data processor, and each of the second electric telescopic rods 61 is extended. All the second electric telescopic rods 61 drive the arc lamp tubes 63 to move through the fixed rods 62 connected to them. At this time, the illumination range of all the arc lamp tubes 63 can be adjusted. When the vibration frequency of the guide belts 35 on both sides of the sliding bearing is too high, increasing the illumination range of the arc lamp tubes 63 can avoid motion blur caused by high frequency vibration and affect the detection accuracy of the CCD camera 13.

[0118] Figure 5 As shown, in a preferred embodiment of the present invention, the impurity removal mechanism 7 includes a third electric telescopic rod 71, a fourth motor 72, a rubber roller 73, and a guide hole 74.

[0119] The guide rail 37 is fixedly connected to a No. 3 electric telescopic rod 71. The telescopic end of the No. 3 electric telescopic rod 71 is fixedly connected to a No. 4 motor 72. The output shaft of the No. 4 motor 72 is fixedly connected to a rubber roller 73. The rubber roller 73 is provided with a plurality of guide holes 74 along its length. The rubber roller 73 is provided with an oil bladder, which is filled with lubricating oil and has an oil outlet hole.

[0120] In this embodiment, when the vibration sensor detects a high vibration frequency of the guide belt 35, the control system controls the third electric telescopic rod 71 to extend. The third electric telescopic rod 71 drives the rubber roller 73 to press against the guide belt 35. The fourth motor 72 drives the rubber roller 73 to rotate. The rubber roller 73 removes particulate impurities from the outer surface of the guide belt 35. At the same time, under the squeezing force between the rubber roller 73 and the guide belt 35, the oil outlet hole of the oil bladder in the rubber roller 73 expands, and lubricating oil flows out of the oil bladder. The rubber roller 73 applies lubricating oil to the outer surface of the guide belt 35, thereby reducing the friction between the guide belt 35 and the sliding bearing.

[0121] Working principle:

[0122] The sliding bearing is placed on the belt conveyor 2. The sliding bearing moves forward with the belt conveyor 2. Then, under the guidance of the guide plate 11, the sliding bearing enters the guide mechanism 3. The guide mechanism 3 limits the sliding bearing. In the center of the guide mechanism 3, the dust removal mechanism 4 lubricates the guide mechanism 3 and removes debris, reducing the friction between the sliding bearing and the guide mechanism 3, thereby reducing the noise and vibration caused by friction.

[0123] During this process, the monitoring module can monitor the motion trajectory, speed, and vibration of the external environment of the sliding bearing.

[0124] The processing module is capable of analyzing data based on the motion trajectory, speed, and vibration of the external environment before the sliding bearing is detected, and generating control information.

[0125] The control module can control and adjust the drive mechanism 5 and the lighting component 6 according to the control information.

[0126] Specifically, during the guiding process, frictional resistance inevitably occurs between the sliding bearing and the guiding mechanism 3 and the dust removal mechanism 4, causing changes in the moving speed of the sliding bearing. Since real-time adjustment of the illumination angle and intensity based on the object's movement trajectory is a key technology for achieving high-precision imaging in industrial inspection scenarios, especially suitable for the dynamic detection needs of the linear CCD camera 13 for high-speed, irregularly moving targets, in this embodiment, when the sliding bearing is being detected, the control system can calculate the real-time light intensity L based on the change in the sliding bearing's moving speed. t The value is used to adjust the light intensity of the lighting component 6 in real time;

[0127] Furthermore, when the second speed sensor 9 detects that the speed reduction value of the sliding bearing exceeds the preset speed threshold in the data processor, the control system can control the adjustment component 36 to drive the two connecting frames 31 to move towards each other, thereby reducing the limit of the guide belt 35 on the sliding bearing; at the same time, the control system controls the electric telescopic cylinder 42 to retract, thereby reducing the squeezing force between the rubber brush head 44 and the sliding bearing, and reducing the resistance of the rubber brush head 44 to the sliding bearing.

[0128] Since the guide belt 35 guides the movement trajectory of the sliding bearing, the vibration of the guide belt 35 will directly affect the lighting conditions during the detection of the sliding bearing. In order to reduce the motion blur caused by vibration, in this embodiment, the control system can calculate the value of the adjustment distance X0, and thus adjust the lighting range of the lighting component 6 according to the vibration of the guide belt 35.

[0129] The data processor can also calculate the frequency difference between the two vibration sensors. When the frequency difference between the two vibration sensors exceeds the preset frequency difference threshold in the data processor, the drive mechanism 5 drives the CCD camera 13 to move a fixed distance toward the vibration sensor with the higher frequency value.

[0130] Furthermore, the control system controls the extension of the No. 3 electric telescopic rod 71, which drives the rubber roller 73 to press against the guide belt 35. The No. 4 motor 72 drives the rubber roller 73 to rotate, and the rubber roller 73 removes particulate impurities from the outer surface of the guide belt 35. At the same time, under the squeezing force between the rubber roller 73 and the guide belt 35, the oil outlet hole in the oil bladder of the rubber roller 73 expands, and the oil bladder flows outward. The rubber roller 73 applies lubricating oil to the outer surface of the guide belt 35, thereby reducing the friction between the guide belt 35 and the sliding bearing.

[0131] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated inspection device for surface defects of sliding bearings, comprising an inspection table (1), wherein a belt conveyor (2) is provided in the middle of the inspection table (1), and two guide plates (11) are provided at one end of the inspection table (1), the two guide plates (11) being arranged opposite to each other on both sides of the belt conveyor (2), characterized in that: The upper end face of the testing platform (1) is fixedly connected to a fixing frame (12), and the fixing frame (12) is connected to a guide mechanism (3) and a dust removal mechanism (4). The guide mechanism (3) can guide the sliding bearing. The upper end face of the detection platform (1) is fixedly connected to an outer cover (10). The outer cover (10) is located on the side of the guide mechanism (3) away from the guide plate (11). A drive mechanism (5) is provided in the outer cover (10). The drive mechanism (5) is connected to a CCD camera (13). The drive mechanism (5) can drive the CCD camera (13) to move horizontally. Illumination components (6) are provided on all four sides of the CCD camera (13). The illumination components (6) can change their own illumination range and illumination intensity. The control system includes: The monitoring module is used to acquire motion-related data of the sliding bearing; the processing module is used to determine control information based on the motion-related data of the sliding bearing; the control module is used to control and adjust the drive mechanism (5) and the lighting assembly (6) based on the control information. The processing module includes a data processor, which calculates the frequency difference between two vibration sensors. When the frequency difference between the two vibration sensors exceeds the preset frequency difference threshold in the data processor, the driving mechanism (5) drives the CCD camera (13) to move a fixed distance toward the vibration sensor with the higher frequency value. The monitoring module includes: a first speed sensor (8), a second speed sensor (9), two vibration sensors and a noise sensor; the first speed sensor (8) is fixed between two guide plates (11), the second speed sensor (9) is fixedly connected to the side of the fixing frame (12) near the outer cover (10), both vibration sensors are fixedly connected to the guide mechanism (3), and the noise sensor is connected to the inner wall of the outer cover (10); The motion-related data of the sliding bearing includes at least the monitoring of motion trajectory, motion speed, and vibration of the external environment during motion; The processing module includes a data processor, and the data processing method of the data processor is as follows: The calculation method for the light intensity of the lighting component (6) is as follows: ； L t Real-time light intensity, unit: lux, which is the lighting intensity that needs to be dynamically adjusted according to the speed of the object; V0 is the initial velocity of the sliding bearing before it enters the middle of the guide mechanism (3), in m / s, which is the value of the first speed sensor (8). V t The real-time speed of the sliding bearing before it is to be tested, in m / s, is the value of the second speed sensor (9). L0 is the reference light intensity, in lux, which is the standard illumination intensity corresponding to the initial velocity V0; The calculation method for the illumination range of the lighting component (6) is as follows: ； X0 is the adjustment distance of the illumination range of the lighting component (6), in cm; K is the influence coefficient of vibration frequency on illumination range, which is an empirical value and is taken as 0.1-0.2; f t The average value of the real-time vibration frequency values ​​of the two vibration sensors, in Hz; f0 is the upper limit of the vibration frequency under illumination conditions, in Hz; The control module is based on L t The value of X0 is used to adjust the light intensity and light range of the lighting component (6).

2. The automated inspection equipment for surface defects of sliding bearings according to claim 1, characterized in that, It also includes a guiding mechanism (3), which includes a connecting frame (31), a guide roller (32), a first motor (33), a tensioning assembly (34), a guide belt (35), and an adjusting assembly (36). Two connecting frames (31) are slidably connected to the fixed frame (12). Each connecting frame (31) has a guide roller (32) rotatably connected to both ends. A motor (33) is fixedly connected to one end of each connecting frame (31). The output shaft of the motor (33) is fixedly connected to a guide roller (32). A tensioning component (34) is provided in the middle of the connecting frame (31). A guide belt (35) surrounds the tensioning component (34) and the two guide rollers (32). A foam sound-absorbing board (14) is provided in the middle of the connecting frame (31). A vibration sensor is fixedly connected to the connecting frame (31). The vibration sensor is in contact with the guide belt (35). The tensioning component (34) can tension the guide belt (35). An adjustment component (36) is provided between the two connecting frames (31). The adjustment component (36) can drive the two connecting frames (31) to move relative to each other.

3. The automated inspection equipment for surface defects of sliding bearings according to claim 2, characterized in that, The tensioning assembly (34) includes a sliding seat (341), a tensioning roller (342), a first electric telescopic rod (343), and a first spring (344). A guide rail (37) is fixedly connected to the middle of the connecting frame (31). A sliding seat (341) is slidably connected in the guide rail (37). A first electric telescopic rod (343) is fixedly connected to the guide rail (37). A protrusion is fixedly connected to the telescopic end of the first electric telescopic rod (343). A first spring (344) is connected between the protrusion and the sliding seat (341). A tension roller (342) is rotatably connected to the bottom of the sliding seat (341).

4. The automated inspection equipment for surface defects of sliding bearings according to claim 2, characterized in that, The adjustment assembly (36) includes a second motor (361) and a bidirectional threaded rod (362). The second motor (361) is fixedly connected to the upper end face of the fixed frame (12). The output shaft of the second motor (361) is fixedly connected to the bidirectional threaded rod (362). The bidirectional threaded rod (362) is threadedly connected to two connecting frames (31) at the same time.

5. The automated inspection equipment for surface defects of sliding bearings according to claim 1, characterized in that, The dust removal mechanism (4) includes a filter box (41), an electric telescopic cylinder (42), a perforated plate (43), a rubber brush head (44), an electric telescopic sleeve (45), and an air pump (46). The filter box (41) is fixedly connected to the fixing frame (12). An electric telescopic cylinder (42) is fixedly connected to the bottom of the filter box (41). A perforated plate (43) is fixedly connected to the telescopic end of the electric telescopic cylinder (42). The filter box (41) is connected to the perforated plate (43) through the electric telescopic cylinder (42). A filter screen is provided in the filter box (41). Multiple rubber brush heads (44) are distributed at the bottom of the perforated plate (43). An electric telescopic sleeve (45) is also fixedly connected to the bottom of the perforated plate (43). An air suction pump (46) is connected to the filter box (41).

6. The automated inspection equipment for surface defects of sliding bearings according to claim 1, characterized in that, The drive mechanism (5) includes a No. 3 motor (51), a one-way threaded rod (52), and a slider (53); The No. 3 motor (51) is fixedly connected to the outer cover (10). The output shaft of the No. 3 motor (51) is fixedly connected to a one-way threaded rod (52). The one-way threaded rod (52) is threadedly connected to a slider (53). The slider (53) is slidably connected to the inner top surface of the outer cover (10). The bottom of the slider (53) is fixedly connected to a CCD camera (13).

7. The automated inspection equipment for surface defects of sliding bearings according to claim 3, characterized in that, It also includes a cleaning mechanism (7), which includes a No. 3 electric telescopic rod (71), a No. 4 motor (72), a rubber roller (73), and a guide hole (74). The guide rail (37) is fixedly connected to a No. 3 electric telescopic rod (71), and the telescopic end of the No. 3 electric telescopic rod (71) is fixedly connected to a No. 4 motor (72). The output shaft of the No. 4 motor (72) is fixedly connected to a rubber roller (73). The rubber roller (73) has multiple guide holes (74) along its length. The rubber roller (73) has an oil bladder filled with lubricating oil and an oil outlet hole.

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