Extra-miniature bearing appearance defect detection device

Abstract

The invention provides a super-miniature bearing appearance defect detection device. The super-miniature bearing appearance defect detection device comprises a rack, the feeding assembly is arranged on the rack; the discharging assembly is arranged on the rack; the turntable is arranged on the inner side of the rack; the clamp assembly is arranged on the rotating disc, and the clamp assembly is used for receiving the bearing in the feeding assembly and feeding the bearing into the discharging assembly after detection is completed; the detection assembly is fixedly arranged on the rack, and the rotary table is used for driving the clamp assembly to rotate to the bottom of the detection assembly and completing detection; the detection assembly comprises a first bearing front face detection station, a bearing overturning station, a first bearing back face detection station, a first outer circle detection station and an inner hole detection station which are arranged in sequence, and the first bearing front face detection station and the first bearing back face detection station complete image comparison detection through a color camera. The first outer circle detection station completes image comparison detection through a line-scan digital camera, and the inner hole detection station completes image comparison detection through an endoscope camera.

Description

Technical Field

[0001] This invention relates to a detection device, and more particularly, to a device for detecting surface defects in miniature bearings. Background Technology

[0002] Currently, Chinese patent CN106053487B discloses a 360-degree visual inspection device for bearing appearance, including a frame. The frame houses an image acquisition mechanism and an upper light source. The image acquisition mechanism is located above the upper light source, and a lower light source is positioned directly below it on the frame. The upper surface of the lower light source is covered with dark glass. By illuminating the bearing with both upper and lower light sources, shadows on the bearing can be effectively eliminated. Furthermore, the presence of the dark glass prevents the lower light source from affecting the image acquired by the image acquisition mechanism.

[0003] The aforementioned patent still has shortcomings. It only inspects one side of the bearing and cannot observe the bearing end face, outer circular surface, and inner ring, resulting in low inspection efficiency and easy omission of defects. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a device for detecting appearance defects in miniature bearings, which has the function of comprehensive detection.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: a device for detecting appearance defects in miniature bearings, comprising a frame; The feeding assembly is mounted on the frame; The feeding assembly is mounted on the frame; The turntable is located inside the frame; A clamping assembly, which is mounted on a turntable, is used to receive bearings from the loading assembly and, after inspection, to feed them into the unloading assembly. The detection assembly is fixedly mounted on the frame, and the turntable is used to drive the fixture assembly to rotate to the bottom of the detection assembly and complete the detection. The detection assembly includes a bearing front detection station 1, a bearing flipping station, a bearing back detection station 1, an outer circle detection station 1, and an inner hole detection station arranged sequentially. The bearing front detection station 1 and the bearing back detection station 1 perform image comparison detection using a color camera. The outer circle detection station 1 performs image comparison detection using a line scan camera. The inner hole detection station performs image comparison detection using an endoscopic lens camera.

[0006] Preferably, the feeding assembly includes a vibratory feeder, a conveyor belt, a pushing slide, and a pushing cylinder. The vibratory feeder feeds the bearing into the conveyor belt, and the pushing cylinder pushes the bearing on the conveyor belt into the pushing slide and into the clamping assembly.

[0007] Preferably, the pusher slide is also provided with an oil removal ring, the surface of which is covered with a cloth. When the bearing passes through the oil removal ring, the oil removal ring wipes the upper surface of the bearing. The surface of the conveyor belt is also covered with a cloth, and a limit block is provided at the side end of the conveyor belt. When the bearing abuts against the limit block, the conveyor belt drives the cloth to remove oil from the bottom of the bearing.

[0008] Preferably, the clamping assembly includes a clamping cylinder, a pair of chucks are provided at the end of the clamping cylinder, and a rotating component is provided inside the chuck. The rotating component is used to drive the outer circle of the bearing to rotate and cooperate with the line scan camera to complete the detection.

[0009] Preferably, the chuck is provided with a mounting groove, and the rotating component is disposed in the mounting groove, including an input shaft and a first abutment wheel. A first gear is provided on the input shaft, and a first tooth is provided on the inner side of the first abutment wheel. The first gear meshes with the first tooth, and the first abutment wheel cooperates to clamp the bearing. When the input shaft rotates, it drives the first abutment wheel to rotate and drives the bearing to rotate. A servo motor and a lifting seat are also provided at the bottom of the first outer circle detection station. When the fixture assembly moves to the first outer circle detection station, the lifting seat drives the servo motor to move upward and connects its output end to the input shaft.

[0010] Preferably, the mounting groove is further provided with an end face oil removal component, which rotates in the opposite direction to the bearing, and the input shaft drives the end face oil removal component to rotate and remove oil.

[0011] Preferably, the end face degreasing assembly includes a degreasing belt, a second abutment wheel, a power wheel, and a tensioning block. The degreasing belt is wound around the first abutment wheel, the second abutment wheel, the tensioning block, and the power wheel. The second abutment wheel is provided with a second gear tooth, which also meshes with the first gear. The power wheel cooperates with the first abutment wheel to drive the degreasing belt to rotate in the opposite direction to the outer ring of the bearing.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up a bearing front inspection station, a bearing flipping station, a bearing back inspection station, an outer circle inspection station, and an inner hole inspection station arranged in sequence, it is possible to achieve all-round observation of the end face, outer circle surface, and inner ring of miniature bearings, effectively avoiding the omission of defects during the inspection process and greatly improving the inspection efficiency. By using a color camera, a line scan camera, and an endoscope camera to complete the image comparison inspection of different parts, the accuracy and reliability of the inspection are ensured. 2. By setting up the loading and unloading components, and cooperating with the turntable and clamping components, the automatic loading and unloading of bearings and the automation of the inspection process are realized, further improving the inspection efficiency; 3. During the feeding process, the oil removal rings installed on the feeding slide and the velvet cloth wrapped on the surface of the conveyor belt can effectively remove oil stains from the upper and lower surfaces of the bearing, providing good conditions for subsequent testing, avoiding interference from oil stains on the test results, and improving the accuracy of the test. 4. Through the design of the rotating component in the fixture assembly, the outer circle of the bearing can be driven to rotate, and the outer circle can be inspected in conjunction with the line scan camera. In the outer circle inspection station, the input shaft is connected to the servo motor through the cooperation of the servo motor and the lifting seat, which provides stable power support for the rotation of the bearing. 5. By using the end-face degreasing assembly installed in the mounting groove, the degreasing belt rotates in opposite directions relative to the outer ring of the bearing to remove oil stains from the bearing end face, ensuring the accuracy of the test. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment; Figure 2 This is a top view of an embodiment; Figure 3 This is a schematic diagram of the feeding assembly. Figure 4 This is a schematic diagram of the chuck's structure; Figure 5 This is a side view of the chuck; Figure 6 for Figure 5 AA section view; Figure 7 for Figure 5 BB section view; Figure 8 This is a schematic diagram of the lifting seat structure.

[0014] Reference numerals: 1. Frame; 2. Feeding assembly; 3. Unloading assembly; 4. Turntable; 5. Fixture assembly; 6. Inspection assembly; 7. Bearing front inspection station 1; 8. Bearing flipping station; 9. Bearing back inspection station 1; 10. Outer diameter inspection station 1; 11. Inner hole inspection station; 12. Bearing front inspection station 2; 13. Bearing back inspection station 2; 14. Outer diameter inspection station 2; 15. Vibratory feeder; 16. Conveyor belt ; 17. Pushing slide; 18. Pushing cylinder; 19. Oil removal ring; 20. Limit block; 21. Clamping cylinder; 22. Chuck; 23. Rotating component; 24. Mounting slot; 25. Input shaft; 26. Abutment wheel one; 27. Gear one; 28. Gear tooth one; 29. ​​Servo motor; 30. Lifting seat; 31. End face oil removal assembly; 32. Oil removal belt; 33. Abutment wheel two; 34. Power wheel; 35. Tensioning block; 36. Gear tooth two. Detailed Implementation

[0015] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and mastered.

[0016] A device for detecting surface defects in miniature bearings includes a frame 1; The feeding assembly 2 is mounted on the frame 1; The feeding assembly 3 is mounted on the frame 1; Turntable 4 is located inside frame 1; The clamping assembly 5 is set on the turntable 4 and evenly distributed around the turntable 4. The clamping assembly 5 is used to receive the bearings in the feeding assembly 2 and send them into the unloading assembly 3 after the inspection is completed. The inspection component 6 is fixedly mounted on the frame 1. The turntable 4 drives the fixture component 5 to rotate to the bottom of the inspection component 6 and complete the inspection. The inspection component 6 includes a bearing front inspection station 7, a bearing flipping station 8, a bearing back inspection station 9, an outer diameter inspection station 10, and an inner hole inspection station 11 arranged in sequence. The bearing front inspection station 7 and the bearing back inspection station 9 complete image comparison inspection through a color camera. The outer diameter inspection station 10 completes image comparison inspection through a line scan camera. The inner hole inspection station 11 completes image comparison inspection through an endoscope camera. To improve the inspection accuracy, a bearing front inspection station 2 12, a bearing back inspection station 2 13, and an outer diameter inspection station 2 14 can be set to perform secondary inspections on the front, back, and outer diameter of the bearing.

[0017] The feeding assembly 2 includes a vibratory feeder 15, a conveyor belt 16, a pusher slide 17, and a pusher cylinder 18. The vibratory feeder 15 feeds the bearings into the conveyor belt 16, and the pusher cylinder 18 pushes the bearings on the conveyor belt 16 into the pusher slide 17 and into the clamping assembly 5. The bearings on the conveyor belt 16 and the pusher slide 17 are arranged one by one. The pusher slide 17 is also equipped with an oil removal ring 19. The surface of the oil removal ring 19 is covered with a cloth. When the bearing passes through the oil removal ring 19, the oil removal ring 19 wipes the upper surface of the bearing. The conveyor belt 16 continues to run, and its surface is also covered with a cloth. A limit block 20 is provided on the side of the conveyor belt 16. When the bearing moves to the side of the limit block 20, it abuts against the limit block 20. At this time, the conveyor belt 16 continues to move, causing the cloth to wipe the bottom of the bearing and complete the oil removal.

[0018] The fixture assembly 5 includes a clamping cylinder 21, with a pair of chucks 22 at the end of the clamping cylinder 21. A rotating component 23 is provided inside the chucks 22. The rotating component 23 is used to drive the outer circle of the bearing to rotate and cooperate with the line scan camera to complete the detection.

[0019] The chuck 22 has a mounting groove 24, and the rotating component 23 is installed in the mounting groove 24. It includes an input shaft 25 and a first abutment wheel 26. The input shaft 25 is equipped with a first gear 27, and the inner side of the first abutment wheel 26 has a first tooth 28. The first gear 27 meshes with the first tooth 28, and the first abutment wheel 26 clamps the bearing. When the input shaft 25 rotates, it drives the first abutment wheel 26 to rotate and drives the bearing to rotate. The bottom of the outer diameter inspection station 10 and the second outer diameter inspection station 14 is also equipped with a servo motor 29 and a lifting seat 30. When the fixture assembly 5 moves to the outer diameter inspection station 10 or the second outer diameter inspection station 14, the lifting seat 30 drives the servo motor 29 to move upward and connect its output end to the input shaft 25. The input shaft 25 is equipped with a hexagonal hole, and the output shaft of the servo motor 29 is equipped with a hexagonal head, thereby realizing that the servo motor 29 drives the input shaft 25 to rotate.

[0020] An end-face oil removal assembly 31 is also provided in the mounting groove 24. The end-face oil removal assembly 31 rotates in the opposite direction to the bearing. The input shaft 25 drives the end-face oil removal assembly 31 to rotate and remove oil. The end-face oil removal assembly 31 includes an oil removal belt 32, a second abutment wheel 33, a power wheel 34, and a tensioning block 35. The second abutment wheel 33 and the power wheel 34 are rotatably arranged in the mounting groove 24. The oil removal belt 32 is wound around the first abutment wheel 26, the second abutment wheel 33, the tensioning block 35, and the power wheel 34. The second abutment wheel 33 is provided with a second gear tooth 36, which also meshes with the first gear 27. The power wheel 34 and the first abutment wheel 26 cooperate to drive the oil removal belt 32 to rotate in the opposite direction to the outer ring of the bearing, thereby wiping and removing oil from the end face of the bearing.

[0021] The actual testing process is as follows: The bearings are first fed into the conveyor belt 16 in an orderly manner by the vibratory feeder 15. The conveyor belt 16 runs smoothly and transports the bearings one by one to the entrance of the pusher slide 17. The pusher cylinder 18 moves precisely according to the preset rhythm and pushes the bearings on the conveyor belt 16 into the pusher slide 17. When the bearing moves on the pusher slide 17, the rotating oil removal ring 19 plays its role. The cloth on its surface makes full contact with the upper surface of the bearing and effectively wipes away the oil stains on the upper surface. At the same time, the conveyor belt 16 continues to run. The bearing moves on the conveyor belt 16 to the side of the limit block 20 and abuts against the limit block 20. At this time, the conveyor belt 16 continues to move, and the cloth wrapped on its surface wipes the bottom of the bearing to complete the bottom oil removal, ensuring that the bearing surface is clean before entering the fixture assembly 5, creating good conditions for subsequent accurate testing.

[0022] When the clamping cylinder 21 of the clamping assembly 5 is activated, a pair of chucks 22 at the end open and accurately clamp the bearing delivered from the pusher slide 17. During the inspection process, when the clamping assembly 5 moves to the outer diameter inspection station 10 or the outer diameter inspection station 24, the lifting seat 30 quickly drives the servo motor 29 to move upward. The hexagonal head at the output end of the servo motor 29 is accurately inserted into the hexagonal hole on the input shaft 25. The input shaft 25 starts to rotate under the drive of the servo motor 29. The gear 27 on the input shaft 25 meshes with the gear 28 on the inner side of the abutment wheel 26, driving the abutment wheel 26 to rotate, thereby driving the outer diameter of the bearing to rotate. At the same time, the gear 27 on the input shaft 25 also meshes with the gear 36 on the abutment wheel 23. The power wheel 34 cooperates with the abutment wheel 26 to drive the degreasing belt 32 to rotate in the opposite direction to the outer ring of the bearing. While inspecting the outer diameter, the bearing end face is further wiped and degreased to ensure the accuracy of the inspection.

[0023] Linear scan cameras acquire images of the rotating bearing's outer diameter at outer diameter inspection stations 10 and 14, accurately detecting surface defects by comparing them with preset standard images. Color cameras acquire and compare images of the bearing's front and back sides at bearing front inspection stations 7, 9, 12, and 13, respectively. An endoscope camera performs detailed image acquisition and comparison at the inner ring of the bearing at the inner hole inspection station 11, providing comprehensive and multi-angle inspection of surface defects in various parts of the bearing, effectively preventing any defects from being missed during inspection.

[0024] After the inspection is completed, the turntable 4 continues to rotate, sending the clamp assembly 5 to the unloading assembly 3. The clamping cylinder 21 actuates, causing the chuck 22 to open and sending the inspected bearing into the unloading assembly 3, thus completing the entire inspection process. Through the close cooperation and automated operation of its various components, the entire device achieves efficient and accurate detection of appearance defects in miniature bearings.

[0025] Of course, the above are just typical examples of the present invention. In addition, the present invention may have many other specific embodiments. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A device for detecting surface defects in miniature bearings, characterized in that: Includes rack (1); The feeding assembly (2) is mounted on the frame (1); The feeding assembly (3) is mounted on the frame (1); Turntable (4) is located inside the frame (1); A clamp assembly (5) is set on a turntable (4). The clamp assembly (5) is used to receive the bearing in the loading assembly (2) and send it into the unloading assembly (3) after the inspection is completed. The detection component (6) is fixedly mounted on the frame (1), and the turntable (4) is used to drive the clamp assembly (5) to rotate to the bottom of the detection component (6) and complete the detection. The detection component (6) includes a bearing front detection station (7), a bearing flipping station (8), a bearing back detection station (9), an outer circle detection station (10), and an inner hole detection station (11) arranged in sequence. The bearing front detection station (7) and the bearing back detection station (9) perform image comparison detection through a color camera. The outer circle detection station (10) performs image comparison detection through a line array camera. The inner hole detection station (11) performs image comparison detection through an endoscope camera.

2. The device for detecting surface defects in miniature bearings according to claim 1, characterized in that: The feeding assembly (2) includes a vibratory plate (15), a conveyor belt (16), a pusher slide (17), and a pusher cylinder (18). The vibratory plate (15) feeds the bearing into the conveyor belt (16), and the pusher cylinder (18) pushes the bearing on the conveyor belt (16) into the pusher slide (17) and into the clamp assembly (5).

3. The device for detecting surface defects in miniature bearings according to claim 2, characterized in that: The pusher slide (17) is also provided with an oil removal ring (19), the surface of which is covered with velvet. When the bearing passes through the oil removal ring (19), the oil removal ring (19) wipes the upper surface of the bearing. The surface of the conveyor belt (16) is also covered with velvet. A limit block (20) is provided on the side of the conveyor belt (16). When the bearing abuts against the limit block (20), the conveyor belt (16) drives the velvet to remove oil from the bottom of the bearing.

4. The device for detecting surface defects in miniature bearings according to claim 1, characterized in that: The clamping assembly (5) includes a clamping cylinder (21), and a pair of chucks (22) are provided at the end of the clamping cylinder (21). A rotating component (23) is provided inside the chuck (22). The rotating component (23) is used to drive the outer circle of the bearing to rotate and cooperate with the line scan camera to complete the detection.

5. The device for detecting surface defects in miniature bearings according to claim 4, characterized in that: The chuck (22) is provided with a mounting groove (24), and the rotating part (23) is provided in the mounting groove (24), including an input shaft (25) and a first abutment wheel (26). A first gear (27) is provided on the input shaft (25), and a first tooth (28) is provided on the inner side of the first abutment wheel (26). The first gear (27) meshes with the first tooth (28), and the first abutment wheel (26) clamps the bearing. When the input shaft (25) rotates, it drives the first abutment wheel (26) to rotate and drives the bearing to rotate. The bottom of the outer circle detection station (10) is also provided with a servo motor (29) and a lifting seat (30). When the clamp assembly (5) moves to the outer circle detection station (10), the lifting seat (30) drives the servo motor (29) to move up and connects its output end with the input shaft (25).

6. The device for detecting surface defects in miniature bearings according to claim 5, characterized in that: An end-face oil removal assembly (31) is also provided in the mounting groove (24). The end-face oil removal assembly (31) rotates in the opposite direction to the bearing. The input shaft (25) drives the end-face oil removal assembly (31) to rotate and remove oil.

7. The device for detecting surface defects in miniature bearings according to claim 6, characterized in that: The end face degreasing assembly (31) includes a degreasing belt (32), a second abutment wheel (33), a power wheel (34), and a tensioning block (35). The degreasing belt (32) is wound around the first abutment wheel (26), the second abutment wheel (33), the tensioning block (35), and the power wheel (34). The second abutment wheel (33) is provided with a second gear tooth (36), which meshes with the first gear (27). The power wheel (34) cooperates with the first abutment wheel (26) to drive the degreasing belt (32) to rotate in the opposite direction to the outer ring of the bearing.

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