CN115753797A - Three-dimensional rotating bearing appearance defect image acquisition device - Google Patents
Three-dimensional rotating bearing appearance defect image acquisition device Download PDFInfo
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- CN115753797A CN115753797A CN202211472407.5A CN202211472407A CN115753797A CN 115753797 A CN115753797 A CN 115753797A CN 202211472407 A CN202211472407 A CN 202211472407A CN 115753797 A CN115753797 A CN 115753797A
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Abstract
The invention discloses a three-dimensional rotating bearing appearance defect image acquisition device, which comprises: the bearing rotating mechanism comprises two optical axis guide rails which are arranged in parallel and located on the same plane, the two optical axis guide rails are rotatably connected to the top surface of the detection platform through a driving assembly, and the two optical axis guide rails are used for driving the bearing to rotate; the defect detection mechanism comprises two defect detection box guide rails which are arranged in parallel and located on the same plane, the two defect detection box guide rails are perpendicular to the two optical axis guide rails, the two defect detection box guide rails are connected with the defect detection boxes in a sliding mode, the defect detection boxes are higher than the two optical axis guide rails, openings are formed in the side walls, facing the bearing, of the defect detection boxes, correspond to the bearing, and three-dimensional detection assemblies and light source assemblies are arranged in the defect detection boxes.
Description
Technical Field
The invention relates to the technical field of bearing detection, in particular to a three-dimensional rotating bearing appearance defect image acquisition device.
Background
In the bearing production process, due to the influence of various uncertain factors, surface defects such as scratches, spots, collision and the like can be generated on the surface of the bearing, the use performance is influenced, and potential safety hazards exist. Therefore, before the bearing workpiece is packaged, a strict defect detection procedure is required to be carried out, and the bearing workpiece can be ensured to be normally used after being shipped out of a factory. In the prior art, the detection method for the defects of the bearing surface mainly comprises a manual detection method and a machine vision method, wherein the manual detection method is used for detecting the defects such as collision, scratch and the like of the detected bearing surface manually, and has the defects of poor detection precision, low efficiency and influence on a detection result by subjective factors; the machine vision rule is used for shooting and detecting the surface of the bearing through vision detection equipment, and the detection speed, efficiency, cost, flexibility and the like are all more excellent. The visual inspection equipment is generally composed of a data acquisition device and intelligent inspection and calculation software.
The existing bearing appearance defect detection equipment mostly collects plane images of a bearing, a visual detection camera collects single-side images of the end face of the bearing and the appearance of an inner ring and an outer ring of the bearing, then the single-side images are collected through an image processing algorithm, equipment needs to be adjusted according to the size of the bearing before the bearing is used, and the equipment is not convenient enough, complex and high in cost. At present, no bearing surface defect detection device exists, and image acquisition work of bearing surface defects can be simultaneously realized on a station from a three-dimensional space. Based on the current situation, the invention designs the three-dimensional rotating bearing appearance defect image acquisition device from the intelligent upgrading angle of the existing bearing production line.
Disclosure of Invention
The invention aims to provide an image acquisition device for appearance defects of a three-dimensional rotating bearing, and aims to solve or improve at least one of the technical problems.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a three-dimensional rotating bearing appearance defect image acquisition device, which comprises:
a detection platform;
the bearing rotating mechanism comprises two optical axis guide rails which are arranged in parallel and positioned on the same plane, the two optical axis guide rails are rotationally connected to the top surface of the detection platform through a driving assembly, and the two optical axis guide rails are used for driving the bearing to rotate;
defect detection mechanism, defect detection mechanism includes two parallel arrangement and is located coplanar's defect detection case guide rail, two defect detection case guide rail and two the optical axis guide rail sets up perpendicularly, two sliding connection defect detection case on the defect detection case guide rail, just the defect detection case is higher than two the optical axis guide rail, the defect detection case orientation the lateral wall of bearing has the opening, the opening with the bearing position is corresponding, be equipped with three-dimensional detection subassembly and light source subassembly in the defect detection case.
Preferably, the top surface of the detection platform is fixedly connected with two optical axis guide rail fixing seats, and two ends of the optical axis guide rail are rotatably connected to the two optical axis guide rail fixing seats.
Preferably, the drive assembly includes the motor, motor fixed mounting be in the testing platform top surface, the output shaft rigid coupling of motor has motor optical axis cover, motor optical axis cover is kept away from the one end of motor and arbitrary the one end rigid coupling of optical axis guide rail, two the optical axis guide rail is kept away from the one end of motor is passed through the diversion subassembly transmission and is connected.
Preferably, the diversion subassembly includes two gear optical axis covers, two gear optical axis cover rigid coupling respectively is in two the optical axis guide rail is kept away from the one end of motor, two the meshing is connected with the gear between the gear optical axis cover, install the gear fixing pole on the gear, the gear fixing pole rigid coupling is in the testing platform top surface.
Preferably, both ends of the defect detection box guide rail are fixedly connected with a defect detection box guide rail fixing seat respectively, and the defect detection box guide rail fixing seat is fixedly connected to the top surface of the detection platform.
Preferably, the outer side wall of the defect detection box far away from the bearing is fixedly connected with an output end of a horizontal pushing cylinder, and the horizontal pushing cylinder is fixedly installed on the top surface of the detection platform.
Preferably, the three-dimensional detection assembly comprises three camera support frames, the three camera support frames are respectively and fixedly connected to three inner side walls of the defect detection box, which are not provided with an opening, and a camera is fixedly mounted on each camera support frame.
Preferably, the light source subassembly includes reflection of light cloth, light ring light source and sheen cloth, reflection of light cloth rigid coupling is in the defect detection case is installed on the three inside wall of camera, light ring light source fixed mounting is in on the interior roof of defect detection case, the sheen cloth rigid coupling is in on the roof in the defect detection case, just the sheen cloth covers the light ring light source.
The invention discloses the following technical effects:
the three-dimensional detection device has high integration degree and small occupied space, can be freely used, shoots the two end surfaces and the circumferential surface of the bearing through the three-dimensional detection assembly in the defect detection box, does not need to split the detection of each bearing surface, can realize the simultaneous detection of the three-dimensional surface of the bearing on one position, and saves space.
The light source assembly is added into the defect detection box, so that the brightness of the surface of the bearing is uniform, the interference of ambient light is reduced, the quality of an acquired image can be improved, and the detection precision is improved.
The bearing is directly placed on the optical axis guide rail for detection, the position of equipment does not need to be adjusted according to the size of the bearing, and the bearing detection device is suitable for detecting surface defects of bearings with various sizes; meanwhile, the rotating speed of the optical axis guide rail can be controlled through the driving assembly, the rotating speed of the optical axis guide rail can be automatically adjusted on the basis of meeting the detection precision, and the universality is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a schematic structural view of a bearing rotating mechanism according to the present invention;
FIG. 3 is a schematic structural diagram of a defect detection mechanism according to the present invention;
FIG. 4 is a schematic view of the internal structure of the defect inspection box of the present invention;
in the figure: 1. a detection platform; 2. a defect detection box; 3. a defect detection box guide rail fixing seat; 4. a defect detection box guide rail; 5. a motor; 6. an optical axis guide rail fixing seat; 7. an optical axis guide rail; 8. a motor optical shaft sleeve; 9. a bearing; 10. a gear optical shaft sleeve; 11. a gear; 12. a gear fixing rod; 13. a camera; 14. a camera support; 15. reflective cloth; 16. an aperture light source; 17. soft light cloth; 18. and (4) horizontally pushing the cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1 to 4, the present embodiment provides a three-dimensional rotating bearing appearance defect image capturing device, including:
a detection platform 1;
the bearing rotating mechanism comprises two optical axis guide rails 7 which are arranged in parallel and located on the same plane, the two optical axis guide rails 7 are rotatably connected to the top surface of the detection platform 1 through a driving assembly, and the two optical axis guide rails 7 are used for driving a bearing 9 to rotate;
defect detection mechanism, defect detection mechanism includes two parallel arrangement and is located coplanar's defect detection case guide rail 4, two defect detection case guide rails 4 set up with two optical axis guide rails 7 are perpendicular, sliding connection defect detection case 2 on two defect detection case guide rails 4, and defect detection case 2 is higher than two optical axis guide rails 7, defect detection case 2 has the opening towards the lateral wall of bearing 9, the opening is corresponding with bearing 9 position, be equipped with three-dimensional detection subassembly and light source subassembly in the defect detection case 2.
The defect detection device has the advantages of high integration degree, small occupied space and free use, the two end surfaces and the circumferential surface of the bearing 9 are shot by the three-dimensional detection assembly in the defect detection box 2, the detection of each bearing surface is not required to be split, the three-dimensional surface of the bearing 9 can be simultaneously detected at one position, and the space is saved.
The defect detection box 2 is added with the light source component, so that the surface brightness of the bearing 9 is uniform, the interference of ambient light is reduced, the quality of collected images can be improved, and the detection precision is improved.
The bearing 9 is directly placed on the optical axis guide rail 7 for detection, the position of equipment does not need to be adjusted according to the size of the bearing 9, and the device is suitable for detecting surface defects of bearings 9 with various sizes; meanwhile, the rotating speed of the optical axis guide rail 7 can be controlled through the driving assembly, the rotating speed of the optical axis guide rail 7 can be automatically adjusted on the basis of meeting the detection precision, and the universality is improved.
Furthermore, annular holes are symmetrically formed in the bottoms of the two side walls of the defect detection box 2 corresponding to the defect detection box guide rails 4 and used for penetrating the two defect detection box guide rails 4.
Further optimize the scheme, testing platform 1 top surface rigid coupling has two optical axis guide rail fixing bases 6, and the both ends of two optical axis guide rail 7 are rotated and are connected on two optical axis guide rail fixing bases 6. The driving assembly comprises a motor 5, the motor 5 is fixedly installed on the top surface of the detection platform 1, an output shaft of the motor 5 is fixedly connected with a motor optical shaft sleeve 8, one end, far away from the motor 5, of the motor optical shaft sleeve 8 is fixedly connected with one end of any one optical axis guide rail 7, and one ends, far away from the motor 5, of the two optical axis guide rails 7 are in transmission connection through the turning assembly.
Any one optical axis guide rail 7 is driven to rotate through the motor 5, and the other optical axis guide rail 7 rotates in the same direction and at the same speed through the direction changing assembly, so that the rotation of the driving bearing 9 is realized.
Further, the rotating speed of the optical axis guide rail 7 and the bearing 9 is controlled by adjusting the input voltage of the motor 5, and the rotating speed is adjusted to enable the data image collected by the camera 13 to be clearer.
Further, the width of the defect detection box 2 is narrower than the width between the two optical axis guide rail fixing seats 6.
Further optimize the scheme, the diversion subassembly includes two gear optical axis cover 10, and two gear optical axis cover 10 rigid coupling respectively are in the one end of keeping away from motor 5 of two optical axis guide rails 7, and the meshing is connected with gear 11 between two gear optical axis cover 10, installs gear fixing rod 12 on gear 11, and gear fixing rod 12 rigid coupling is at testing platform 1 top surface.
Through the meshing of the gear 11 and the two gear optical shaft sleeves 10, when one gear optical shaft sleeve 10 rotates, the gear 11 is driven to rotate, so that the gear 11 drives the other gear optical shaft sleeve 10 to rotate, the two gear optical shaft sleeves 10 rotate in the same direction and at the same speed, and the two optical shaft guide rails 7 rotate in the same direction and at the same speed.
Furthermore, parameters such as the number of teeth and the diameter of the gear optical shaft sleeve 10 are consistent with those of the gear 11, and the outer cylindrical surface of the outer ring of the bearing 9 is tangent to the surfaces of the two optical axis guide rails 7.
Further optimize the scheme, defect detection case guide rail fixing base 3 is fixedly connected to both ends of defect detection case guide rail 4 respectively, and defect detection case guide rail fixing base 3 is fixedly connected to the top surface of detection platform 1. The outer side wall of the defect detection box 2, which is far away from the bearing 9, is fixedly connected with the output end of a horizontal pushing cylinder 18, and the horizontal pushing cylinder 18 is fixedly installed on the top surface of the detection platform 1.
The flat push cylinder 18 pushes the defect detection box 2 to displace on the defect detection box guide rail 4, so that the defect detection box 2 covers the bearing 9 to detect the bearing 9.
Further, the horizontal pushing cylinder 18 is limited, so that the horizontal pushing cylinder 18 pushes the defect detection box 2 to move right above the bearing 9.
Further optimize the scheme, three-dimensional detection subassembly includes three camera support frame 14, and three camera support frame 14 rigid coupling respectively is on the not open-ended three inside wall of defect detecting box 2, and fixed mounting has camera 13 on the camera support frame 14.
The bearing 9 vertically rotates on the optical axis guide rail 7, and the three cameras 13 simultaneously acquire data of two end faces and an axial face of the bearing 9, so that the three-dimensional bearing defect detection work at one position is realized.
Further, compared with the problems that a 3D camera is used for collecting data in the existing bearing defect detection device, the price is high, the detection precision is low and the like, the cameras 13 in the bearing defect detection device all use 2D cameras, three-dimensional detection of the bearing surface is completed by using three 2D cameras, and the effects of high detection precision and robustness on the premise of low cost are achieved.
Further, the cameras 13 are located at the position of the central axis of the inner diameter circumference of the bearing 9, the cameras 13 facing the outer cylindrical surface are line scan cameras, and the cameras 13 on the two sides are ordinary cameras.
Further optimize the scheme, the light source subassembly includes reflection of light cloth 15, light ring light source 16 and sheen cloth 17, and reflection of light cloth 15 rigid coupling is on the three inside wall that camera 13 was installed to defect detection case 2, and light ring light source 16 fixed mounting is on the interior roof of defect detection case 2, and sheen cloth 17 rigid coupling is on the roof in defect detection case 2, and sheen cloth 17 covers light ring light source 16.
The defect detection box 2 is added with the diaphragm light source 16 and the reflective cloth 15, so that the surface brightness of the bearing 9 is uniform, the detection precision is improved, and the diaphragm light source 16 passes through the soft cloth 17, so that the wavelength of the light source can be changed.
Further, the reflective cloth 15 has uneven spots for diffuse reflection.
The working principle is as follows: the device is moved to the vicinity of a production line, a bearing 9 is vertically placed on an optical axis guide rail 7, a flat push cylinder 18 pushes a defect detection box 2 to move to the position right above the bearing 9, an aperture light source 16 in the defect detection box 2 passes through a soft light cloth 17 to change the wavelength of the light source, the surface brightness of the bearing 9 is uniform through a reflective cloth 15 on the inner wall of the defect detection box 2, a motor 5 drives a motor optical shaft sleeve 8 to drive one optical axis guide rail 7, the two optical axis guide rails 7 are connected through a gear 11 and rotate at the same speed, the bearing 9 rotates along with the optical axis guide rails 7, a camera 13 in the defect detection box 2 shoots the bearing 9, complete bearing axial surface and end surface images are respectively obtained through the uniform rotation of the bearing 9, after the detection is finished, the motor 5 stops rotating, the flat push cylinder 18 is recovered, the defect detection box 2 is moved to the original position, the detection work is finished, and the defect detection on the surface of the bearing 9 can be continuously carried out according to determine the situation whether the defect detection on the surface of the device is needed.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (8)
1. The utility model provides a three-dimensional rotating bearing outward appearance defect image acquisition device which characterized in that includes:
an inspection platform (1);
the bearing rotating mechanism comprises two optical axis guide rails (7) which are arranged in parallel and located on the same plane, the two optical axis guide rails (7) are rotatably connected to the top surface of the detection platform (1) through a driving assembly, and the two optical axis guide rails (7) are used for driving a bearing (9) to rotate;
defect detection mechanism, defect detection mechanism includes two parallel arrangement and is located coplanar defect detection case guide rail (4), two defect detection case guide rail (4) and two optical axis guide rail (7) set up perpendicularly, two sliding connection defect detection case (2) on defect detection case guide rail (4), just defect detection case (2) are higher than two optical axis guide rail (7), defect detection case (2) orientation the lateral wall of bearing (9) has the opening, the opening with bearing (9) position is corresponding, be equipped with three-dimensional detection subassembly and light source subassembly in defect detection case (2).
2. The three-dimensional rotating bearing appearance defect image capturing device according to claim 1, wherein: the top surface of the detection platform (1) is fixedly connected with two optical axis guide rail fixing seats (6), and two ends of the optical axis guide rail (7) are rotatably connected to the two optical axis guide rail fixing seats (6).
3. The three-dimensional rotating bearing appearance defect image capturing device according to claim 2, wherein: the drive assembly comprises a motor (5), the motor (5) is fixedly mounted on the top surface of the detection platform (1), an output shaft of the motor (5) is fixedly connected with a motor optical shaft sleeve (8), the motor optical shaft sleeve (8) is far away from one end of the motor (5) and one end of the optical shaft guide rail (7) are fixedly connected and two ends of the optical shaft guide rail (7) are far away from one end of the motor (5) and are connected through a turning assembly in a transmission mode.
4. The three-dimensional rotating bearing appearance defect image acquisition device according to claim 3, characterized in that: the direction changing assembly comprises two gear optical shaft sleeves (10) and two gear optical shaft sleeves (10) which are fixedly connected with two optical shaft guide rails (7) away from one end of the motor (5) and two gears (11) are meshed between the gear optical shaft sleeves (10), gear fixing rods (12) are installed on the gears (11), and the gear fixing rods (12) are fixedly connected with the top surface of the detection platform (1).
5. The three-dimensional rotating bearing appearance defect image capturing device according to claim 1, wherein: the two ends of the defect detection box guide rail (4) are fixedly connected with defect detection box guide rail fixing seats (3) respectively, and the defect detection box guide rail fixing seats (3) are fixedly connected with the top surface of the detection platform (1).
6. The three-dimensional rotating bearing appearance defect image capturing device according to claim 1, wherein: the defect detection box (2) is far away from the outer side wall of the bearing (9) and is fixedly connected with an output end of a horizontal pushing cylinder (18), and the horizontal pushing cylinder (18) is fixedly installed on the top surface of the detection platform (1).
7. The three-dimensional rotating bearing appearance defect image capturing device according to claim 1, wherein: the three-dimensional detection assembly comprises three camera support frames (14), the three camera support frames (14) are fixedly connected to three inner side walls, not opened, of the defect detection box (2) respectively, and cameras (13) are fixedly mounted on the camera support frames (14).
8. The three-dimensional rotating bearing appearance defect image capturing device according to claim 7, wherein: the light source subassembly includes reflection of light cloth (15), light ring light source (16) and sheen cloth (17), reflection of light cloth (15) rigid coupling is in install defect detection case (2) on the three inside wall of camera (13), light ring light source (16) fixed mounting is in on the interior roof of defect detection case (2), sheen cloth (17) rigid coupling is in on the roof in defect detection case (2), just sheen cloth (17) cover light ring light source (16).
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| CN202211472407.5A CN115753797B (en) | 2022-11-23 | 2022-11-23 | Three-dimensional rotating bearing appearance defect image acquisition device |
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| CN202211472407.5A CN115753797B (en) | 2022-11-23 | 2022-11-23 | Three-dimensional rotating bearing appearance defect image acquisition device |
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| CN117495837A (en) * | 2023-11-17 | 2024-02-02 | 哈尔滨工程大学 | Intelligent detection method for three-dimensional appearance defects of bearing |
| CN117589793A (en) * | 2024-01-19 | 2024-02-23 | 辽宁爱尔创科技有限公司 | Detection system, method, device, equipment and storage medium for ceramic sleeve |
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|---|---|
| CN115753797B (en) | 2023-08-29 |
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