Bearing ring eddy current flaw detection equipment

Abstract

The invention relates to bearing ring eddy current flaw detection equipment, and relates to the technical field of bearing ring detection equipment, the bearing ring eddy current flaw detection equipment comprises a feeding assembly arranged at a feeding station, a carrying assembly, a visual assembly, a first overturning assembly, a first flaw detection assembly, a second overturning assembly and a second flaw detection assembly; the feeding assembly can drive the bearing ring to move to the visual station, the visual assembly can conduct visual detection on the bearing ring so as to judge whether the first end of the bearing ring faces upwards or not, and the first overturning assembly can overturn the bearing ring so that the first end of the bearing ring can face upwards. The carrying assembly can carry the bearing ring to the first overturning assembly, the first flaw detection assembly, the second overturning assembly and the second flaw detection assembly from the visual station. According to the invention, the problem in the prior art that two structural parameters need to be adapted when different-end bearing rings are detected is avoided, the algorithm complexity and the hardware debugging difficulty are simplified, the detection precision is improved, and the possibility of false detection is reduced.

Description

Technical Field

[0001] This application relates to the technical field of bearing ring detection equipment, and in particular to an eddy current flaw detection equipment for bearing rings. Background Art

[0002] Flaw detection of bearing rings (such as ultrasonic testing, magnetic particle testing or penetrant testing, etc.) is a key step to ensure their quality and reliability, and plays an important role in ensuring safety, improving bearing life and performance, controlling manufacturing costs, monitoring material and process defects, etc.

[0003] The invention authorization number CN115265447B discloses a full inspection equipment for bearing rings using magnetic field induction technology. In the existing patent, the first end face flaw detection probe is located directly above the outer ring of the positioning turntable to detect the upper end face of the bearing ring. The second end face flaw detection probe is also located directly above the outer ring of the positioning turntable, but at this time the bearing ring has been flipped, and the probe detects the original lower end face. When the bearing ring is completed with flaw detection by the first end face flaw detection probe, the turning mechanism drives the bearing ring to flip 180° through the clamping cylinder and the rotating cylinder, so that its original lower end face faces upward for the second end face flaw detection probe to detect. When detecting heterogeneous bearing rings with different structures at both ends, it is necessary to distinguish the detection. If the bearing ring detection equipment in the existing patent is used to detect heterogeneous bearing rings, the first end face flaw detection probe has the phenomenon of detecting both the first end and the second end of the heterogeneous bearing, which makes the detection device need to adapt the parameters of both structures at the same time, increasing the algorithm complexity and the debugging difficulty of the hardware, resulting in misdetection and reducing the detection accuracy of the equipment.

[0004] Therefore, the existing bearing ring detection equipment is not suitable for flaw detection of heterogeneous bearing rings, and there is an urgent need to develop a new type of bearing ring flaw detection equipment. Summary of the Invention

[0005] In order to improve the problem that when the existing equipment detects heterogeneous bearing rings, the detection device needs to adapt the parameters of both structures at the same time, increasing the algorithm complexity and the debugging difficulty of the hardware, resulting in misdetection and reducing the detection accuracy of the equipment, this application provides an eddy current flaw detection equipment for bearing rings.

[0006] The eddy current flaw detection equipment for bearing rings provided by this application adopts the following technical solutions: An eddy current flaw detection equipment for bearing rings includes a feeding component, a handling component, a vision component, a first turning component, a first flaw detection component, a second turning component, and a second flaw detection component arranged at the feeding station; The feeding component can drive the bearing ring to move to the vision station. The vision component can perform vision inspection on the bearing ring to determine whether the first end of the bearing ring is facing upward. The first flipping component can flip the bearing ring so that the first end of the bearing ring faces upward. The first flaw detection component can perform flaw detection on the end face and the outer peripheral surface of the first end of the bearing ring. The second flipping component can flip the bearing ring so that the second end of the bearing ring faces upward. The second flaw detection component can perform flaw detection on the end face and the inner peripheral surface of the second end of the bearing ring. The handling component can transport the bearing ring from the vision station to the first flipping component, the first flaw detection component, the second flipping component, and the second flaw detection component.

[0007] By adopting the above technical solution, when performing flaw detection on the bearing ring, the feeding component moves the bearing ring to the vision station. The vision component performs vision inspection on the bearing ring to determine whether the first end of the bearing ring is facing upward. The handling component moves the bearing ring onto the first flipping component. If the second end of the bearing ring is facing upward, the first flipping component flips the bearing ring so that the first end of the bearing ring faces upward. If the first end of the bearing ring is facing upward, the first flipping component does not perform the flipping operation. The handling component then transfers the bearing ring on the first flipping component to the first flaw detection component. The first flaw detection component performs flaw detection on the end face and the outer peripheral surface of the first end of the bearing ring. The handling component then transfers the bearing ring to the second flipping component. The second flipping component flips the bearing ring so that the second end of the bearing ring faces upward. The handling component then transfers the bearing ring to the second flaw detection component. The second flaw detection component performs flaw detection on the end face and the inner peripheral surface of the second end of the bearing ring, thereby completing the flaw detection of the entire bearing ring.

[0008] In this solution, when performing flaw detection, by flipping to make the first end of the bearing ring face upward, the first flaw detection component only needs to set the structural parameters for the end face and the outer peripheral surface of the first end, and the second flaw detection component only needs to set the structural parameters for the end face and the inner peripheral surface of the second end, effectively avoiding the problem in the prior art that two sets of structural parameters need to be adapted when detecting different ends of the bearing ring, simplifying the algorithm complexity and the hardware debugging difficulty, improving the detection accuracy, and reducing the possibility of false detection.

[0009] Preferably, the feeding component includes a conveyor belt mechanism, a loading rack, and a clamping member. The conveyor belt mechanism can receive the bearing ring on the upstream process conveyor and transport the bearing ring to the clamping station. The clamping member is arranged on the loading rack and can clamp the bearing ring. The loading rack can drive the bearing ring to move to the vision station.

[0010] By adopting the above technical solution, the conveyor belt mechanism can receive and convey the bearing rings to the clamping station, ensuring the continuity and stability of material transfer. The clamping member is arranged on the loading rack and can reliably clamp the bearing rings, avoiding the risk of position deviation or dropping during movement.

[0011] Preferably, two first linear cylinders are arranged on the conveyor belt mechanism at intervals along the moving direction of the bearing rings. A blocking portion is fixedly arranged on the piston rod of each first linear cylinder. The first linear cylinder can operably drive the blocking portion to move to the moving track of the bearing rings to block the movement of the bearing rings. The first linear cylinder located upstream can control a single bearing ring to move between the two blocking portions.

[0012] By adopting the above technical solution, the setting of the first linear cylinder and its blocking portion can accurately control the moving position of the bearing rings on the conveyor belt mechanism, ensuring that a single bearing ring is accurately restricted between the two blocking portions, effectively avoiding the situation where multiple bearing rings enter the subsequent process simultaneously, improving the feeding accuracy and automation degree of the equipment, and providing a reliable material positioning basis for subsequent visual inspection and other operations.

[0013] Preferably, the vision component includes a vision camera and a control center. The vision camera is arranged at the vision station and faces the bearing rings at the vision station to enable image acquisition. The control center can coordinate the vision detection logic, receive the processing results, and output control signals to the first flipping component.

[0014] By adopting the above technical solution, the vision camera can perform image acquisition on the bearing rings to ensure accurate acquisition of the information whether the first end of the bearing rings is facing up. The control center coordinates the vision detection logic and processes the acquired images, judges the posture of the bearing rings, and then outputs control signals to the first flipping component to achieve precise posture adjustment of the bearing rings, improving the detection accuracy and automation degree.

[0015] Preferably, the first flipping component includes a clamping and flipping frame and two clamping plates. The two clamping plates are oppositely arranged on the clamping and flipping frame. The handling component can handle the bearing rings between the two clamping plates. The clamping and flipping frame can drive the two clamping plates to operably clamp and fix the bearing rings and flip them so that the first end of the bearing rings faces up.

[0016] By adopting the above technical solution, the clamping and flipping frame and the two clamping plates in the first flipping component cooperate with each other to accurately clamp and fix the bearing rings and achieve directional flipping, ensuring that the first end of the bearing rings faces up.

[0017] Preferably, it further includes a measuring component, which is arranged at the detection station downstream of the second flaw detection component, and the handling component can transport the bearing ring to the measuring component; The measuring component includes a positioning member and a measuring member. The positioning member can position the end face of the second end of the bearing ring, and the measuring member can measure the distance L between the end face of the second end and the annular groove of the bearing ring and determine whether L meets the standard.

[0018] By adopting the above technical solution, after the flaw detection of the bearing ring is completed, the distance L between the end face of the second end and the annular groove of the bearing ring is measured as needed. The positioning member positions the end face of the second end of the bearing ring, ensuring the stability during the measurement process, thereby improving the measurement accuracy. The measuring member can accurately measure the distance L between the end face of the second end and the annular groove and determine whether it meets the standard, effectively avoiding the outflow of unqualified products and improving the product quality control level.

[0019] Preferably, the positioning member includes a positioning block and a moving workbench. The positioning block is provided with a positioning surface. The handling component can transport the bearing ring to the moving workbench, and the moving workbench can drive the end face of the second end of the bearing ring to fit with the positioning surface.

[0020] By adopting the above technical solution, after the handling component transports the bearing ring to the moving workbench, the moving workbench drives the end face of the second end of the bearing ring to fit with the positioning surface on the positioning block, thereby ensuring the stable and accurate position of the bearing ring during the subsequent measurement process, providing reliable reference conditions for the measurement of the distance L, and improving the measurement accuracy.

[0021] Preferably, an elastic pad is provided on the moving workbench, and the bearing ring is placed on the elastic pad.

[0022] By adopting the above technical solution, the elastic pad provides elastic adjustment for the fitting of the positioning surface and the end face of the second end of the bearing ring, avoiding the phenomenon that the positioning surface and the end face of the second end cannot fit accurately due to over-positioning of the bearing ring, and improving the accuracy of the fitting of the end face of the second end of the bearing ring and the positioning surface.

[0023] Preferably, the measuring member includes a distance measuring instrument and two measuring heads. Both of the two measuring heads are arranged on the distance measuring instrument. One of the measuring heads can fit with the end face of the second end of the bearing ring, and the other measuring head can fit with the side wall of the annular groove close to the second end to measure L.

[0024] By adopting the above technical solution, when measuring L, one measuring end fits against the end face of the second end of the bearing ring, and the other measuring end fits against the side wall of the annular groove near the second end. The distance measuring instrument measures the distance between the two measuring ends and compares it with the set value to determine whether the bearing ring meets the standard, improving the accuracy of measuring L.

[0025] Preferably, a lever, a mounting rack, and an NG collection system are provided at the measuring station. The lever is arranged on the mounting rack, and the mounting rack can drive the lever to transfer the bearing rings with unqualified L into the NG collection system for collection.

[0026] By adopting the above technical solution, by the cooperation of the lever and the mounting rack, the bearing rings with unqualified L can be accurately separated from the normal products, avoiding unqualified products from flowing into the subsequent processes and improving the reliability of production quality control. The setting of the NG collection system facilitates the collection of unqualified products.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. By flipping the bearing ring so that the first end faces upward, the first flaw detection component only needs to set the parameters of the end face and the outer peripheral surface structure of the first end, and the second flaw detection component only needs to set the parameters of the end face and the inner peripheral surface structure of the second end, effectively avoiding the problem of adapting two sets of structural parameters when detecting the abnormal bearing ring in the prior art, simplifying the algorithm complexity and the difficulty of hardware debugging, improving the detection accuracy, and reducing the possibility of false detection; 2. By positioning the end face of the second end of the bearing ring with the positioning member, the stability during the measurement process is ensured, thereby improving the measurement accuracy. The measuring member can accurately measure the distance L between the end face of the second end and the annular groove and determine whether it meets the standard, effectively avoiding the outflow of unqualified products and improving the product quality control level; 3. The overall equipment realizes the full-process automated operation from feeding to detection through the orderly cooperation of multiple stations, not only improving the detection efficiency, but also reducing the errors that may be introduced by human intervention, further ensuring the reliability of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of an eddy current flaw detection device for a bearing ring according to an embodiment of the present application.

[0029] Figure 2 is a top view of the eddy current flaw detection device for the bearing ring.

[0030] Figure 3 is a cross-sectional view of the bearing ring used to illustrate this embodiment.

[0031] Figure 4It is a schematic structural diagram showing the conveyor belt mechanism.

[0032] Figure 5 It is a schematic structural diagram showing the loading rack.

[0033] Figure 6 It is a schematic structural diagram showing the first flipping component.

[0034] Figure 7 It is a schematic structural diagram showing the second flaw detection component.

[0035] Figure 8 It is a schematic diagram showing the eddy current probe of the first flaw detection component for flaw detection of the bearing raceway.

[0036] Figure 9 It is a schematic diagram showing the eddy current probe of the second flaw detection component for flaw detection of the bearing raceway.

[0037] Figure 10 It is a schematic structural diagram showing the handling component.

[0038] Figure 11 It is a schematic structural diagram showing one perspective of the measuring component.

[0039] Figure 12 It is a schematic structural diagram showing another perspective of the measuring component.

[0040] Figure 13 It is a schematic structural diagram showing the measuring end for measuring the bearing raceway.

[0041] Description of reference numerals: 1. Processing box body; 2. Loading component; 21. Conveyor belt mechanism; 22. Loading rack; 221. X-direction guide rail cylinder; 222. Z-direction guide rail cylinder; 23. Clamping component; 231. Claw cylinder; 24. Guide rail; 25. First linear cylinder; 26. Blocking part; 27. Positioning plate; 3. Handling component; 31. First X-direction linear cylinder; 311. First platen; 32. Y-direction guide rail cylinder; 321. Second platen; 33. Double-rod cylinder; 34. Clamping mechanism; 341. First clamping plate; 342. Second clamping plate; 343. First claw; 344. Second claw; 345. Clamping block; 4. Vision component; 41. Vision camera; 5. First flipping component; 51. Clamping and flipping rack; 511. First rotating cylinder; 512. Second linear cylinder; 52. Clamping plate; 6. First flaw detection component; 61. Eddy current probe; 62. Rotating support base; 7. Second flipping component; 8. Second flaw detection component; 9. Measuring component; 91. Positioning part; 911. Positioning block; 912. Moving workbench; 913. Positioning surface; 914. Relief opening; 92. Measuring part; 921. Distance measuring instrument; 922. Measuring end; 923. X-direction linear mechanism; 93. Placing table; 94. Third linear cylinder; 95. Elastic pad; 96. Mounting frame; 971. Z-direction linear cylinder; 972. Second X-direction linear cylinder; 973. Pushing rod; 98. NG collection system; 981. Guide tube; 982. Collection table; 983. Arc groove; 984. Pushing cylinder; 985. Pushing block; 13. Bearing ring; 131. Ring groove; 132. First end; 133. Second end; 141. Workbench; 142. Lower box body; 143. Oil receiving tray. Detailed implementation mode

[0042] The following will further elaborate on this application in conjunction with the attached Figures 1-13 drawings.

[0043] The applicant found that when using the existing bearing ring 13 detection equipment to detect the heretical bearing ring 13, the flaw detection probe on the first end 132 surface has the phenomenon of detecting both the first end 132 part and the second end 133 part of the heretical bearing, which makes the detection device need to adapt the parameters of two structures at the same time, increasing the algorithm complexity and the debugging difficulty of the hardware, resulting in false detection and reducing the detection accuracy of the equipment. For this reason, in this solution, the first end 132 of the bearing ring 13 is turned upwards through flipping, so that the first flaw detection component 6 only needs to set the parameters of the structure of the end face and the outer peripheral face of the first end 132, and the second flaw detection component 8 only needs to set the parameters of the structure of the end face and the inner peripheral face of the second end 133, effectively avoiding the problem of adapting the parameters of two structures when detecting the heretical bearing ring 13 in the prior art, simplifying the algorithm complexity and the hardware debugging difficulty, improving the detection accuracy, and reducing the possibility of false detection.

[0044] An embodiment of the present application discloses an eddy current flaw detection device for a bearing ring.

[0045] Referring to Figure 1 、 Figure 2 As shown in

[0046] Referring to Figure 3 According to the manufacturing requirements, a circumferential groove 131 is provided on the outer peripheral surface of the bearing ring 13 in this embodiment. The circumferential groove 131 is arranged in a circle along the circumferential direction of the bearing ring 13. The distances between the circumferential groove 131 and the two end faces of the bearing ring 13 are different. The end of the bearing ring 13 with a larger distance from the circumferential groove 131 is set as the first end 132, and the end with a smaller distance from the circumferential groove 131 is set as the second end 133.

[0047] Referring to Figure 1 、 Figure 2 As shown in

[0048] The moving path of the bearing ring 13 is as follows: First, it is transferred to the vision station by the feeding component 2. The vision component 4 performs vision detection on the bearing ring 13 to determine whether the first end 132 of the bearing ring 13 is facing up. Then, the handling component 3 transfers the bearing ring 13 to the first flipping component 5. If the second end 133 of the bearing ring 13 is facing up, the first flipping component 5 flips the bearing ring 13 so that the first end 132 of the bearing ring 13 is facing up. If the first end 132 of the bearing ring 13 is facing up, the first flipping component 5 does not perform the flipping operation. Then, the handling component 3 transfers the bearing ring 13 on the first flipping component 5 to the first flaw detection component 6. The first flaw detection component 6 performs flaw detection on the end face and the outer peripheral surface of the first end 132 of the bearing sleeve ring. Then, the handling component 3 transfers the bearing ring 13 to the second flipping component 7. The second flipping component 7 flips the bearing ring 13 so that the second end 133 of the bearing ring 13 is facing up. Then, the handling component 3 transfers the bearing ring 13 to the second flaw detection component 8. The second flaw detection component 8 performs flaw detection on the end face and the inner peripheral surface of the second end 133 of the bearing ring 13, thus completing the full-surface flaw detection of the bearing ring 13.

[0049] After the flaw detection of the bearing ring 13 is completed, the handling component 3 transports the bearing ring 13 to the measuring component 9. The measuring component 9 measures the distance L between the annular groove 131 and the end face of the second end 133 of the bearing ring 13, and determines whether L meets the standard. If it meets the standard, the handling component 3 transports the bearing ring 13 to the subsequent processing procedure. If it does not meet the standard, the bearing ring 13 is discharged.

[0050] In this solution, the visual component 4 first visually observes the shape of the bearing ring 13. When the second end 133 faces upward, the first flipping component 5 flips the bearing ring 13 so that the first end 132 of the bearing ring 13 faces upward. Therefore, when the bearing ring 13 is detected for flaw detection in a streamlined manner, the first flaw detection component 6 only needs to set the parameters of the end face and the outer peripheral surface structure of the first end 132, and the second flaw detection component 8 only needs to set the parameters of the end face and the inner peripheral surface structure of the second end 133, effectively avoiding the problem of adapting two structural parameters when detecting the bearing ring 13 at the other end in the prior art, simplifying the algorithm complexity and the hardware debugging difficulty, improving the detection accuracy, and reducing the possibility of false detection.

[0051] Specifically, referring to Figure 3 、 Figure 4 , the loading component 2 includes a conveyor belt mechanism 21, a loading rack 22, and a clamping member 23. The conveyor belt mechanism 21 is arranged on one side of the lower box body 142. The conveyor belt mechanism 21 can receive the bearing rings 13 transported by the upstream process. The upstream process conveying device is connected to the conveyor belt mechanism 21 through a guide rail 24. Both sides of the guide rail 24 are bent to form sliding channels on the guide rail 24. The bearing rings 13 on the upstream process conveying device slide along the sliding channels onto the conveyor belt of the conveyor belt mechanism 21, and a clamping station is formed at the tail of the conveyor belt mechanism 21.

[0052] Referring to Figure 3 、 Figure 4, two sets of first linear cylinders 25 are arranged in front of the clamping station of the conveyor belt mechanism 21. The two sets of first linear cylinders 25 are arranged at intervals along the moving direction of the conveyor belt. The moving direction of the piston rod of each first linear cylinder 25 is perpendicular to the moving direction of the conveyor belt. A blocking portion 26 is fixedly provided on the piston rod of each first linear cylinder 25. The blocking portion 26 faces perpendicular to the moving direction of the conveyor belt. The distance between the two blocking portions 26 is greater than the outer diameter of the bearing ring 13 and less than 1.3 times the outer diameter of the bearing ring 13, ensuring that there is a bearing ring 13 between the two blocking portions 26. The first linear cylinder 25 located downstream drives the blocking portion 26 to move to the moving track of the bearing ring 13. When the bearing ring 13 moves between the two blocking portions 26 along with the conveyor belt, the bearing ring 13 is blocked by the downstream blocking portion 26 and stops. The first linear cylinder 25 located upstream drives the corresponding blocking portion 26 to move to the moving track of the bearing ring 13 to block the sliding of the upstream bearing ring 13. The first linear cylinder 25 located downstream drives the blocking portion 26 to disengage from the bearing ring 13. The bearing ring 13 between the two blocking portions 26 moves to the clamping station along with the conveyor belt. Then the first linear cylinder 25 located downstream drives the blocking portion 26 to extend, and the first linear cylinder 25 located upstream drives the corresponding blocking portion 26 to retract, so that the upstream bearing ring 13 enters between the two blocking portions 26, thereby completing the entry of the bearing rings 13 into the clamping station one by one.

[0053] Refer to Figure 3 , Figure 4 , a positioning plate 27 is provided at the clamping station. A V-shaped groove facing the bearing ring 13 is provided on the positioning plate 27. The bearing ring 13 that slides to the clamping station fits against the two side walls of the V-shaped groove to position the bearing ring 13 at the clamping station. A photoelectric sensor is fixedly provided on the positioning plate 27 to detect whether there is a bearing ring 13 at the clamping station and maintain the accuracy of clamping the bearing ring 13.

[0054] Refer to Figure 3 , Figure 4 , the loading rack 22 includes an X-direction guide rail cylinder 221 and a Z-direction guide rail cylinder 222. The base plate of the X-direction guide rail cylinder 221 is fixedly provided on the workbench 141, and the slider of the X-direction guide rail cylinder 221 slides along the X direction. The base plate of the Z-direction guide rail cylinder 222 is fixedly provided on the slider of the X-direction guide rail cylinder 221, and the slider of the Z-direction guide rail cylinder 222 slides along the Z direction. In this embodiment, the clamping member 23 is a jaw cylinder 231. The connecting portion of the jaw cylinder 231 is fixedly connected to the slider of the Z-direction guide rail cylinder 222. The two jaws of the jaw cylinder 231 clamp and fix the bearing ring 13 at the clamping station. The Z-direction guide rail cylinder 222 drives the bearing ring 13 to slide along the Z direction, and the X-direction guide rail cylinder 221 drives the bearing ring 13 to slide along the X direction, so that the bearing ring 13 is transferred to the vision station.

[0055] Reference Figure 1 As shown in Figure 1 , the vision component 4 includes a vision camera 41 and a control center. The vision camera 41 is fixedly arranged at the vision station of the workbench 141 and faces the peripheral side wall of the bearing ring 13 located at the vision station to collect images of the peripheral side wall of the bearing ring 13. An optoelectronic sensor is arranged at the vision station to detect whether there is a bearing ring 13 at the vision station.

[0056] The control center is an industrial computer equipped with a GPU acceleration computing card. The software architecture of the control center includes: 1. Vision processing layer: OpenCV / Halcon: Basic image processing (ROI extraction, edge detection, template matching), deep learning framework (such as PyTorch / TensorRT): Used for complex defect classification (pre-trained model required); 2. Logic control layer: PLC program (TIAPortal / CODESYS): Execute the detection process state machine, trigger the camera to take pictures and flipping actions, industrial computer script (Python / C++): Analyze the vision detection results and generate control instructions (through OPCUA or Socket communication); 3. Human-machine interface (HMI): WinCC / custom UI: Display real-time detection results, statistical reports, alarm logs, and support parameter configuration.

[0057] The working process is as follows: The optoelectronic sensor detects the device in place → The industrial computer sends a photographing instruction to the vision camera 41 → Image preprocessing (denoising, binarization) → Feature extraction (position of the first end 132) → Determine whether it is qualified → Output a control signal to the first flipping component 5; If the first end 132 of the bearing ring 13 faces upward, the PLC triggers a qualified signal (digital output DO = 1), and the first flipping component 5 stops flipping the bearing ring 13; If the second end 133 of the bearing ring 13 faces upward, the PLC triggers an unqualified signal (digital output DO = 0), and the first flipping component 5 flips the bearing ring 13.

[0058] Reference Figure 1 , Figure 6, the first flipping assembly 5 includes a clamping and flipping frame 51 and two clamping plates 52. In this embodiment, the clamping and flipping frame 51 includes a first rotary cylinder 511 and two second linear cylinders 512. The cylinder block of the first rotary cylinder 511 is fixedly connected to the workbench 141. The cylinder blocks of the two second linear cylinders 512 are both fixedly connected to the piston rod of the first rotary cylinder 511. The moving directions of the piston rods of the two second linear cylinders 512 are opposite. The piston rod of each second linear cylinder 512 is fixedly connected to a clamping plate 52. The two second linear cylinders 512 drive the corresponding clamping plates 52 to move, so that the two clamping plates 52 can approach and move away from each other.

[0059] The handling assembly 3 transports the bearing ring 13 at the vision station to the lower clamping plate 52. When the bearing ring 13 needs to be flipped, the two second linear cylinders 512 drive the two clamping plates 52 to approach each other to clamp and fix the bearing ring 13. Then the first rotary cylinder 511 drives the two clamping plates 52 to rotate 180°, flipping the bearing ring 13 so that the first end 132 of the bearing ring 13 faces upward, completing the adjustment of the shape of the bearing ring 13.

[0060] Refer to Figure 1 , Figure 7 and Figure 8 , the probes of the first flaw detection assembly 6 and the second flaw detection assembly 8 are both eddy current probes 61. The first flaw detection assembly 6 and the second flaw detection assembly 8 are both used in conjunction with the rotary support base 62 arranged on the workbench 141. Specifically, the handling assembly 3 transports the bearing ring 13 to the rotary support base 62 corresponding to the first flaw detection assembly 6, aligns the eddy current probe 61 with the end face of the first end 132, and then the rotary support base 62 drives the bearing ring 13 to rotate, so that the eddy current probe 61 performs a complete flaw detection on the entire end face of the first end 132. Then the eddy current probe 61 moves to the outer peripheral surface of the bearing ring 13 and moves downward along the outer peripheral surface to complete the flaw detection of the end face and the outer peripheral surface of the first end 132 of the bearing ring 13.

[0061] Refer to Figure 1 , Figure 7 and Figure 9, the structure of the second flipping assembly 7 is the same as that of the first flipping assembly 5. After the first flaw detection assembly 6 finishes flaw detection on the bearing race 13, the handling assembly 3 transports the bearing race 13 to the clamping plate 52 of the second flipping assembly 7. Then, the second flipping assembly 7 clamps and flips the bearing race 13 so that the end face of the second end 133 faces upward. Then, the handling assembly 3 transports the bearing race 13 to the corresponding rotating support base 62 of the second flaw detection assembly 8. The eddy current probe 61 of the second flaw detection assembly 8 moves to the end face of the second end 133. The rotating support base 62 drives the bearing race 13 to rotate, so that the eddy current probe 61 performs flaw detection on the entire end face of the second end 133. Then, the eddy current probe 61 moves to the inner side wall of the bearing race 13 and moves downward along the inner side wall of the bearing race 13, thereby completing flaw detection on the end face and the inner circumferential surface of the second end 133 of the bearing race 13. The flaw detection of the entire bearing race 13 is completed by the first flaw detection assembly 6 and the second flaw detection assembly 8.

[0062] Refer to Figure 1 , Figure 10 , the handling assembly 3 includes an X-direction first linear cylinder 31, a Y-direction guide rail cylinder 32, a double-rod cylinder 33, and a clamping mechanism 34. The cylinder block of the X-direction first linear cylinder 31 is fixedly connected to the workbench 141. A first platen 311 is fixedly provided on the piston rod of the X-direction first linear cylinder 31. The first platen 311 is slidably connected to the workbench 141 through a linear rail-slider structure. The base plate of the Y-direction guide rail cylinder 32 is fixedly arranged on the first platen 311. A second platen 321 is fixedly provided on the slider of the Y-direction guide rail cylinder 32. The second platen 321 is slidably connected to the first platen 311 through a linear rail-slider structure. The cylinder block of the double-rod cylinder 33 is fixedly arranged on the second platen 321. The two piston rods of the double-rod cylinder 33 slide along the Y direction, and the sliding directions are opposite.

[0063] Refer to Figure 10, the clamping mechanism 34 includes a first clamping plate 341 and a second clamping plate 342. The first clamping plate 341 is fixedly connected to one piston rod of the double-rod cylinder 33, and the second clamping plate 342 is fixedly connected to the other piston rod of the double-rod cylinder 33. The first clamping plate 341 and the second clamping plate 342 are arranged in a stacked and sliding manner up and down. A number of first clamping claws 343 are integrally provided on the first clamping plate 341, and a number of second clamping claws 344 are integrally provided on the second clamping plate 342. The first clamping claws 343 and the second clamping claws 344 correspond one by one. One first clamping claw 343 and one second clamping claw 344 form a clamping structure. The number of clamping structures is six, corresponding to the vision station, the first flipping assembly 5, the first flaw detection assembly 6, the second flipping assembly 7, the second flaw detection assembly 8, and the measuring assembly 9 respectively. Clamping blocks 345 are fixedly provided at the ends of the first clamping claws 343 and the second clamping claws 344. The clamping blocks 345 are made of rubber material. V-shaped grooves are provided on the opposite sides of the two clamping blocks 345. The bearing ring 13 is clamped and fixed by the two clamping blocks 345.

[0064] When carrying the bearing ring 13, the first linear cylinder 31 in the X direction drives the first clamping plate 341 and the second clamping plate 342 to slide along the X direction, so that the first clamping claws 343 and the second clamping claws 344 are located on both sides of the bearing ring 13. Then, the double-rod cylinder 33 is used to drive the first clamping plate 341 and the second clamping plate 342 to slide relatively, so that the clamping blocks 345 on the first clamping claws 343 and the second clamping claws approach each other, clamp and fix the bearing ring 13. Then, the Y-direction guide cylinder 32 is used to drive the bearing ring 13 to move along the Y direction, so that the bearing ring 13 moves to the downstream processing station, and the handling of the bearing ring 13 is completed.

[0065] Refer to Figure 11 、 Figure 12 and Figure 13 , the measuring assembly 9 includes a positioning member 91 and a measuring member 92. The positioning member 91 includes a positioning block 911 and a moving workbench 912. The moving workbench 912 includes a placing table 93 and two groups of third linear cylinders 94. The two groups of third linear cylinders 94 are arranged at intervals. The piston rods of each group of third linear cylinders 94 face upward. The cylinder bodies of each group of third linear cylinders 94 are fixedly connected to the workbench 141, and the piston rods of the third linear cylinders 94 are fixedly connected to the placing table 93, so as to drive the placing table 93 to lift and lower. An elastic pad 95 is fixedly provided at the center of the placing table 93. In this embodiment, the elastic pad 95 is a rubber pad. When the handling assembly 3 transports the bearing ring 13 from the second flaw detection assembly 8 to the measuring station, the bearing ring 13 is placed on the elastic pad 95.

[0066] Refer to Figure 11 、 Figure 12 and Figure 13, the positioning block 911 is fixedly connected to the workbench 141 through the mounting bracket 96, and is located directly above the elastic pad 95. The positioning block 911 is cylindrical. On the side facing the elastic pad 95, the positioning block 911 is provided with a positioning surface 913, which is an annular surface. In the middle of the positioning surface 913 of the positioning block 911, a cylindrical protrusion is formed. When the positioning surface 913 is in contact with the end face of the second end 133 of the bearing race 13, this protrusion can be inserted into the inner hole of the bearing race 13. A relief opening 914 is provided on the peripheral side wall of the positioning block 911, and the relief opening 914 extends to the positioning surface 913.

[0067] Referring to Figure 11 , Figure 12 and Figure 13 , the measuring member 92 includes a distance measuring instrument 921 and two measuring ends 922. In this embodiment, the distance measuring instrument 921 is an optical dimension measuring instrument. An X-direction linear mechanism 923 is provided at the measuring station. The X-direction linear mechanism 923 is a servo motor - lead screw drive mechanism. The housing of the distance measuring instrument 921 is fixedly connected to the slider of the X-direction linear mechanism 923, so that the distance measuring instrument 921 moves along the X direction. The two measuring ends 922 are both arranged at the two measuring ends of the distance measuring instrument 921. When measuring L, one of the measuring ends 922 is inserted into the relief opening 914, and the other measuring end 922 is inserted into the annular groove 131. Then, the two measuring ends 922 are driven to approach each other, so that one measuring end 922 is in contact with the end face of the second end 133 of the bearing race 13, and the other measuring end 922 can be in contact with the side wall of the annular groove 131 close to the second end 133. The distance measuring instrument 921 collects the measurement data of L and transmits it to the central processing module. The central processing module compares the collected L data with the standard length to determine whether the bearing race 13 is qualified.

[0068] Referring to Figure 11 , Figure 12 , a Z-direction linear cylinder 971 and an X-direction second linear cylinder 972 are provided on the mounting bracket 96. The base plate of the Z-direction linear cylinder 971 is fixedly arranged on the mounting bracket 96. The cylinder block of the X-direction second linear cylinder 972 is fixedly arranged on the slider of the Z-direction linear cylinder 971. A dial rod 973 is fixedly arranged on the piston rod of the X-direction second linear cylinder 972.

[0069] The NG collection system 98 is fixedly provided on the workbench 141. The NG collection system 98 includes a material guiding cylinder 981 and a collection table 982. The top inlet of the material guiding cylinder 981 is arranged on one side of the placement table 93. The push rod 973 can push the unqualified bearing rings 13 into the inlet of the material guiding cylinder 981. The bottom of the material guiding cylinder 981 is provided with a discharge port. The collection table 982 is located below the bottom outlet of the material guiding cylinder 981. The inlet end of the material guiding cylinder 981 is horizontally arranged, and the outlet end of the material guiding cylinder 981 is vertically arranged. When the bearing rings 13 fall from the outlet of the material guiding cylinder 981 onto the collection table 982, the bearing rings 13 are in a vertical state. The collection table 982 is provided with an arc-shaped groove 983 that fits the outer peripheral surface of the bearing rings 13. The arc-shaped groove 983 extends along the length direction of the collection table 982 so that more bearing rings 13 can be stored in the arc-shaped groove 983.

[0070] Refer to Figure 11 、 Figure 12 , a push cylinder 984 and a push block 985 are provided on the collection table 982. The push block 985 is slidably arranged in the arc-shaped groove 983. The push cylinder 984 is fixedly arranged at the end of the collection table 982. The piston rod of the push cylinder 984 slides along the length direction of the arc-shaped groove 983. The piston rod of the push cylinder 984 is fixedly connected to the push block 985. The sliding of the push block 985 in the arc-shaped groove 983 pushes the bearing rings 13 that have fallen onto the collection table 982 forward along the arc-shaped groove 983, so that the unqualified bearing rings 13 are placed on the collection table 982.

[0071] When measuring the bearing rings 13, the placement table 93 drives the bearing rings 13 to lift, and makes the end face of the second end 133 of the bearing rings 13 fit the positioning surface 913. The bearing rings 13 are positioned with the positioning surface 913 as the reference. The elastic pad 95 provides elastic adjustment for the fit between the positioning surface 913 and the end face of the second end 133 of the bearing rings 13, avoiding the phenomenon that the positioning surface 913 and the end face of the second end 133 cannot fit accurately due to over-positioning of the bearing rings 13. After the positioning of the bearing rings 13 is completed, the distance measuring instrument 921 drives the two measuring ends 922 to move towards the bearing rings 13. One of the measuring ends 922 is inserted into the relief opening 914, and the other measuring end 922 is inserted into the annular groove 131. Then, the two measuring ends 922 are driven to approach each other, so that one measuring end 922 fits the end face of the second end 133 of the bearing rings 13, and the other measuring end 922 can fit the side wall of the annular groove 131 close to the second end 133. The distance measuring instrument 921 collects the measurement data of L and transmits it to the central processing module. The central processing module compares the collected L data with the standard length to determine whether the bearing rings 13 are qualified.

[0072] After the measurement is completed, the distance measuring instrument 921 resets, and the placement table 93 resets. If the bearing ring 13 is qualified, the handling component 3 transports the bearing ring 13 to the subsequent processing procedure; if the bearing ring 13 is unqualified, the second linear cylinder 972 in the X direction and the guide rail cylinder 222 in the Z direction drive the lever 973 to move one side of the bearing ring 13, and then the second linear cylinder 972 in the X direction pushes the bearing ring 13 into the inlet of the guide cylinder 981. The bearing ring 13 falls onto the collection table 982 along the guide cylinder 981. The pushing cylinder 984 pushes the bearing ring 13 that has fallen onto the collection table 982 forward towards the front of the arc groove 983, realizing the separation of the qualified bearing rings 13 from the unqualified bearing rings 13 and the collection of the unqualified bearing rings 13.

[0073] The implementation principle of an eddy current flaw detection device for bearing rings in an embodiment of this application is as follows: First, the visual module visually observes the shape of the bearing ring 13. When the second end 133 faces upward, the first flipping component 5 flips the bearing ring 13 so that the first end 132 of the bearing ring 13 faces upward. Therefore, during the in-line flaw detection of the bearing ring 13, the first flaw detection component 6 only needs to set the parameters of the end face and the outer peripheral surface structure of the first end 132, and the second flaw detection component 8 only needs to set the parameters of the end face and the inner peripheral surface structure of the second end 133, effectively avoiding the problem of needing to adapt two structural parameters during the detection of the bearing ring 13 with different ends in the prior art, simplifying the algorithm complexity and the hardware debugging difficulty, improving the detection accuracy, and reducing the possibility of false detection.

[0074] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An eddy current flaw detection device for a bearing ring, characterized in that: It includes a loading component (2), a handling component (3), a vision component (4), a first flipping component (5), a first flaw detection component (6), a second flipping component (7), and a second flaw detection component (8) arranged at the loading station. The loading component (2) can drive the bearing race (13) to move to the vision station. The vision component (4) can perform vision detection on the bearing race (13) to determine whether the first end (132) of the bearing race (13) is facing upward. The first flipping component (5) can flip the bearing race (13) so that the first end (132) of the bearing race (13) faces upward. The first flaw detection component (6) can perform flaw detection on the end face and the outer peripheral surface of the first end (132) of the bearing race (13). The second flipping component (7) can flip the bearing race (13) so that the second end (133) of the bearing race (13) faces upward. The second flaw detection component (8) can perform flaw detection on the end face and the inner peripheral surface of the second end (133) of the bearing race (13). The handling component (3) can transport the bearing race (13) from the vision station to the first flipping component (5), the first flaw detection component (6), the second flipping component (7), and the second flaw detection component (8).

2. The eddy current flaw detection device for bearing rings according to claim 1, characterized in that: The loading component (2) includes a conveyor belt mechanism (21), a loading rack (22), and a clamping member (23). The conveyor belt mechanism (21) can receive the bearing race (13) from the upstream process conveyor and transport the bearing race (13) to the clamping station. The clamping member (23) is arranged on the loading rack (22) and can clamp the bearing race (13). The loading rack (22) can drive the bearing race (13) to move to the vision station.

3. The eddy current flaw detection device for bearing rings according to claim 2, characterized in that: There are two groups of first linear cylinders (25) arranged at intervals along the moving direction of the bearing race (13) on the conveyor belt mechanism (21). A blocking portion (26) is fixedly arranged on the piston rod of each first linear cylinder (25). The first linear cylinder (25) can operably drive the blocking portion (26) to move to the moving track of the bearing race (13) to block the movement of the bearing race (13). The first linear cylinder (25) located upstream can control a single bearing race (13) to move between the two blocking portions (26).

4. The eddy current flaw detection equipment for bearing rings according to claim 1, wherein: The vision component (4) includes a vision camera (41) and a control center. The vision camera (41) is arranged at the vision station and faces the bearing race (13) located at the vision station for image acquisition. The control center can coordinate the vision detection logic, receive the processing result, and output a control signal to the first flipping component (5).

5. The eddy current flaw detection device for bearing rings according to claim 1, characterized in that: The first flipping component (5) includes a clamping and flipping frame (51) and two clamping plates (52). The two clamping plates (52) are oppositely arranged on the clamping and flipping frame (51). The handling component (3) can handle the bearing ring (13) between the two clamping plates (52). The clamping and flipping frame (51) can drive the two clamping plates (52) to operably clamp and fix the bearing ring (13) and flip it so that the first end (132) of the bearing ring (13) faces upward.

6. The eddy current flaw detection device for bearing rings according to claim 1, characterized in that: It further includes a measuring component (9). The measuring component (9) is arranged at the inspection station downstream of the second flaw detection component (8). The handling component (3) can handle the bearing ring (13) to the measuring component (9). The measuring component (9) includes a positioning member (91) and a measuring member (92). The positioning member (91) can position the end face of the second end (133) of the bearing ring (13). The measuring member (92) can measure the distance L between the end face of the second end (133) and the annular groove (131) of the bearing ring (13) and determine whether L meets the standard.

7. The eddy current flaw detection equipment for bearing rings according to claim 6, characterized in that: The positioning member (91) includes a positioning block (911) and a moving workbench (912). The positioning block (911) is provided with a positioning surface (913). The handling component (3) can handle the bearing ring (13) onto the moving workbench (912). The moving workbench (912) can drive the end face of the second end (133) of the bearing ring (13) to fit with the positioning surface (913).

8. The eddy current flaw detection device for bearing rings according to claim 7, characterized in that: An elastic pad (95) is provided on the moving workbench (912). The bearing ring (13) is placed on the elastic pad (95).

9. The eddy current flaw detection device for bearing rings according to claim 6, wherein: The measuring member (92) includes a distance measuring instrument (921) and two measuring heads (922). The two measuring heads (922) are both arranged on the distance measuring instrument (921). One of the measuring heads (922) can fit with the end face of the second end (133) of the bearing ring (13), and the other measuring head (922) can fit with the side wall of the annular groove (131) close to the second end (133) so as to measure L.

10. The eddy current flaw detection equipment for bearing rings according to claim 6, characterized in that: A dial rod (973), a mounting frame (96) and an NG collection system (98) are provided at the measuring station. The dial rod (973) is arranged on the mounting frame (96). The mounting frame (96) can drive the dial rod (973) to transfer the bearing ring (13) with unqualified L into the NG collection system (98) for collection.

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