CN218674774U

CN218674774U - Real-time detection device for small defects on surface of bearing

Info

Publication number: CN218674774U
Application number: CN202222752069.2U
Authority: CN
Inventors: 周友行; 潘恒; 杨沛; 高腾腾
Original assignee: Xiangtan University
Current assignee: Xiangtan University
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-03-21
Anticipated expiration: 2032-10-19

Abstract

The invention discloses a real-time detection device for micro defects on the surface of a bearing. The method comprises the following steps: a bearing positioning conveyor belt; a bearing end face detection assembly and an outer ring detection assembly are sequentially arranged along the extending direction of the bearing positioning conveying belt; the outer ring detection assembly comprises a bearing plummer, a mechanical arm, an electromagnetic positioning device and a group of outer ring detection cameras, the bearing plummer is connected with a bearing positioning transmission belt, the electromagnetic positioning device connected with a stepping motor is adopted at the middle position of the bearing plummer, the stepping motor rotates to be connected with the electromagnetic positioning device to drive a bearing to rotate, and the surface of the outer ring of the bearing can be subjected to defect detection at multiple angles in the rotating process. According to the real-time detection device for the micro defects on the surface of the bearing, the surface of the bearing is detected in an all-round mode through the end face detection camera and the outer ring detection camera. The detection of whether the appearance edge defect of the end face of the bearing is consistent with the end face thickness or not and the detection of the defect of the outer ring of the bearing are realized.

Description

Real-time detection device for small defects on surface of bearing

Technical Field

The invention relates to the field of all-dimensional defect detection of bearings, in particular to a real-time detection device for micro defects on the surface of a bearing.

Background

A bearing is a very important part of mechanical equipment in the industrial field. The mechanical rotating body is a geometric type part, and mainly has the functions of supporting the mechanical rotating body, reducing friction generated in the movement process of the mechanical rotating body and ensuring the rotation precision. Bearing industrial parts such as machine tool spindles, bearings and the like which take cylinders as geometric shapes have indispensable functions in the industrial field, and the quality of the bearing industrial parts directly influences the operation of a machine and the practical service life of the whole equipment. However, in most bearing production processes, due to other reasons such as processes, local scratches and abrasion are inevitably caused on the outer circle surface and the end face of the bearing, so that the physical properties of the bearing are uneven, and the surface quality problem of the bearing is caused.

The existing bearing industrial production process is relatively mature, the production rate is high, and the production quantity is large, so that the online real-time detection of the bearing surface quality information has important significance for improving the product quality and the product economic benefit. The existing bearing surface defect detection is mostly static detection of the bearing, static photographing detection is carried out on the end face and the outer circle surface of the bearing through a visual inspection camera, conventional detection cannot identify some fine cracks and defects, and the bearing not only has defects of end face appearance edge defects, inconsistent thickness of the end face of the bearing and the like on the outer surface in the production process.

Disclosure of Invention

The invention aims to provide a real-time detection device for micro defects on the surface of a bearing, which aims to solve the problems that the micro defects on the surface of the bearing are missed to be detected in the production process of the bearing and static detection cannot be carried out on the outer surface of a bearing outer ring in real time.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

1. a real-time detection device for tiny defects on the surface of a bearing comprises a bearing positioning transmission belt, a bearing platform, a mechanical arm, two end face detection supports, two end face detection cameras, two correctors, a stepping motor, an electromagnetic positioning device, two outer ring detection cameras, a detection support, an XYR adjusting platform and a light source;

2. a bearing positioning conveyor belt; an end face detection assembly and an outer ring detection assembly are sequentially arranged along the extending direction of the bearing conveying belt;

3. outer lane determine module includes bearing plummer, arm, electromagnetism positioner and a set of outer lane detection camera, the bearing plummer links up the setting with bearing location transmission band, adopt the electromagnetism positioner who connects step motor on the bearing plummer middle part position, step motor rotates and links up electromagnetism positioner and drives the bearing and rotate, carries out the defect detection to the bearing surface from a plurality of angles at pivoted in-process a set of outer lane detection camera, the location transmission band combines a set of terminal surface detection camera to realize detecting bearing end face defect.

4. In one embodiment of the invention, the group of end face detection cameras and the group of outer ring detection cameras are arranged on two sides of the bearing platform at equal distances from a center line of the bearing platform as a symmetrical line.

5. In one embodiment of the invention, at least one group of end face detection cameras are arranged on the end face detection supports on two sides of the bearing conveying belt; at least one group of axisymmetric outer ring detection cameras are arranged on the outer ring detection frame in the middle of the bearing table.

6. In one embodiment of the invention, the outer lane detection camera is fixed on the XYR adjustment platform.

7. The bearing positioning transmission band comprises a transmission track and limiting plates arranged on two sides, the transmission track is provided with the bearing positioning transmission band, the transmission track is arranged in parallel, and the bearing sequentially passes through an end face detection assembly and an outer ring detection assembly along the bearing positioning transmission band.

8. And two sides of the bearing positioning conveying belt are respectively provided with a bearing position corrector, and the corrector consists of a sliding rod and sliding block mechanism.

9. But arm claw on the plummer adopts the electromagnetic attraction ring of roll adjustment, and the circular telegram is implemented and is snatched the stability of bearing when operating, terminal surface detection camera and outer lane detection camera adopt the helical lens that can go up and down, can adjust the most suitable detection height according to industrial environment.

Drawings

FIG. 1 is a schematic structural diagram of a device for detecting micro defects on a bearing surface in real time according to the present invention;

in the figure, the device comprises a bearing positioning conveyor belt 1, a bearing table 2, a bearing table 3, a mechanical arm 4, a stepping motor 5, an electromagnetic positioning device 6, an XYR adjusting platform 7, outer ring detection cameras I and 8, outer ring detection cameras II and 9, end face detection cameras I and 10, end face detection cameras II and 11, spiral lenses I and 12, spiral lenses II and 13, spiral lenses III and 14, spiral lenses IV and 15, end face detection supports I and 16, end face detection supports II and 17, correctors I and 18, correctors II and 19 and an electromagnetic suction ring.

Fig. 2 is a schematic structural view of the electromagnetic attraction ring for the claw of the robot arm.

The specific implementation mode is as follows:

as shown in FIG. 1, the present invention is a real-time detection device for micro defects on a bearing surface, comprising: the device comprises a bearing positioning transmission belt 1, a bearing table 2, a mechanical arm 3, a stepping motor 4, an electromagnetic positioning device 5, an XYR adjusting platform 6, two outer ring detection cameras, two end face detection cameras, four spiral lenses, two end face detection supports, two correctors and an electromagnetic attraction ring 19.

The bearing positioning transmission belt 1 is used for transmitting the bearing to be detected; the bearing end face detection assembly and the outer ring detection assembly are sequentially installed along the extending direction of the bearing positioning transmission belt, a bearing to be detected is transmitted to the corrector through the bearing positioning transmission belt, the corrector works to enable the position of the bearing on the transmission belt to be better matched with the end face detection assembly, the robot arm works through the rear system control of the end face detection assembly, the bearing to be detected is adsorbed by the electromagnetic suction ring and is transferred to the electromagnetic positioning device in the middle of the bearing plummer to be detected by the outer ring detection assembly, the detection of the appearance edge defect of the bearing end face is realized, the defect of the outer ring of the bearing is detected, the thickness of the bearing end face is detected consistently, then the electromagnetic suction ring rotates 180 degrees along the direction of the fixed shaft, and the other side end face of the bearing to be detected is placed into the bearing positioning transmission belt on the other side by the mechanical arm to be detected to detect the end face.

According to the real-time detection device for the micro defects on the surface of the bearing, the bearing is placed on the bearing positioning transmission belt 1 and is transmitted to the corrector 17, the corrector 17 is composed of a sliding rod sliding block, the corrector 17 receives a command to start correction after reaching a specific position, some bearings which are initially placed on the bearing and have position deviation caused by factors such as environment are processed, after the bearing to be detected passes through the corrector, the bearing to be detected is transmitted to the lower end face detection support 16, the end face detection camera 10 and the spiral lens 12 are installed on the detection support, and the spiral lens 12 guarantees the precision of the end face detection camera 10 for real-time defect identification under different detection environments. The light source is installed around the terminal surface detection camera 10, and to different illumination intensity under operational environment, set up the light source of adjustable illumination intensity and red, green, blue, white light four-color classification around the terminal surface detection camera 10, the different illumination environment of better reply, this imaging effect that is favorable to better formation image processing guarantees the stability of the image of shooing.

The real-time detection device of small defect on bearing surface of this embodiment, after the terminal surface determine module, shift to electromagnetic positioning device 5 by arm 3 on, electromagnetic positioning device 5 is linked with step motor 4, and bearing inner race detects and needs two outer lane detection cameras simultaneous working, and outer lane detection camera 7 is apart from practical helical lens 13, considers bearing inner race to belong to the curved surface, and two outer lane detection cameras that consequently set up are fixed on XYR adjusts platform 6, adjust platform 6 through XYR and drive outer lane detection camera 7 is horizontal, longitudinal movement, multi-angle rotation on the horizontal plane, adjusts the position of outer lane detection camera 7 for the bearing that awaits measuring. The detection angles of the two outer ring detection cameras can be set according to the most easily generated defect types in the production environment. The light source arrangement of the outer-ring inspection camera 7 is the same as that of the end-face inspection camera 10. The stepping motor 4 drives the electromagnetic positioning device 5 to rotate, and a group of outer ring detection cameras work simultaneously in the rotating process to detect the defects of the outer ring of the bearing from different angles.

In the embodiment, the electromagnetic positioning device 5 and the electromagnetic attraction ring 19 are both system-controlled to be energized and de-energized.

As shown in fig. 2, the electromagnetic attraction ring 19 on the pneumatic gripper of the mechanical arm 3 can be switched on and off by system control, and the electromagnetic attraction ring 19 is arranged to more stably catch the bearing to be detected through the end face detection assembly, so that the electromagnetic attraction ring 19 has higher detection efficiency for the bearing assembly, and is safer and more practical compared with a common pneumatic gripper.

The working process of the invention is as follows:

the real-time detection device for the tiny defects on the surface of the bearing is well installed, a bearing of a model to be detected is placed on the bearing positioning transmission belt 1 and is transmitted to the corrector 17, the corrector 17 corrects the position of the bearing to be detected, the bearing to be detected is transmitted to the lower portion of the end face detection support 16, the end face detection camera 10 collects images of the bearing to be detected, and the spiral lens 11 can adjust the distance between the camera lens and the end face of the bearing. After end face detection, the bearing to be detected is transferred to the electromagnetic positioning device 5 through the mechanical arm 3, the electromagnetic positioning device 5 rotates for 3 times by 120 degrees according to the size of the bearing to be detected, and the outer ring detection camera 8 detects defects on the curved surface of the outer ring of the bearing. After the bearing outer ring passes through detection, the mechanical arm adsorbs the bearing, the electromagnetic adsorption ring 19 rotates 180 degrees along the direction of the fixed shaft, then the bearing to be detected is placed on the bearing positioning transmission belt 1 at the other side, and the defect of the end face at the other side of the bearing to be detected is detected. The invention realizes the omnibearing defect detection of the bearing to be detected.

Claims

1. The utility model provides a real-time detection device of bearing surface micro defect, characterized by includes: a bearing positioning conveyor belt (1); a bearing end face detection assembly and an outer ring detection assembly are sequentially arranged along the extending direction of the bearing positioning transmission belt (1); outer lane determine module includes bearing plummer (2), arm (3), electromagnetism positioner (5) and a set of outer lane detection camera I (7), and outer lane detection camera II (8), bearing plummer (2) link up the setting with bearing location transmission band (1), adopt electromagnetism positioner (5) of connecting step motor (4) on the position of bearing plummer (2) middle part, step motor (4) rotate to link up electromagnetism positioner (5) and drive and are detected the bearing and rotate, detect camera I (7) in a set of outer lane of pivoted in-process, and outer lane detection camera II (8) carry out the defect detection to the bearing surface from a plurality of angles, bearing location transmission band (1) combines a set of end face detection camera I (9), and end face detection camera II (10) realize detecting the bearing end face defect.

2. The device for detecting the micro-defects of the surface of the bearing in real time as claimed in claim 1, wherein: the group of end face detection cameras and the group of outer ring detection cameras use the center line of the bearing platform (2) as a symmetry line, and are arranged on two sides of the bearing positioning conveying belt (1) at equal distances from the symmetry line.

3. The device for detecting the micro defects of the surface of the bearing in real time as claimed in claim 2, wherein: at least one group of end face detection cameras I (9) are arranged on end face detection supports (12) on two sides of the bearing positioning conveying belt (1); at least one group of outer ring detection cameras I (7) are arranged on the XYR adjusting platform (6) in the middle of the bearing platform (2).

4. The device for real-time detection of the micro-defects on the surface of the bearing according to claim 1, wherein: the outer ring detection camera is fixed on the XYR adjusting platform (6).

5. The device for detecting the micro-defects of the surface of the bearing in real time as claimed in claim 1, wherein: the bearing end face detection assembly and the outer ring detection assembly further comprise light sources arranged around the detection camera.

6. The device for detecting the micro-defects of the surface of the bearing in real time as claimed in claim 1, wherein: bearing location transmission band (1) is on a parallel with bearing plummer (2), bearing location transmission band (1) both sides installation limiting plate, bearing pass through terminal surface determine module and outer lane determine module along bearing location transmission band (1) in proper order.

7. The device for detecting the micro-defects of the surface of the bearing in real time as claimed in claim 6, wherein: bearing position correctors (17) are respectively arranged on two sides of the bearing positioning transmission belt (1), and each corrector is composed of a sliding rod and sliding block mechanism.

8. The device for detecting the micro-defects of the surface of the bearing in real time as claimed in claim 1, wherein: the mechanical arm (3) claw on the bearing platform (2) adopts an electromagnetic suction ring (19) with adjustable distance, and the end face detection camera and the outer ring detection camera adopt a liftable spiral lens (11).