A visual detection device for detecting the bottom height and slope leakage of a retainer

Abstract

The application discloses a kind of visual detection equipment for detecting cage bottom height and slope leakage, including operation platform, the rotation disc for placing and driving the rotation of cage to be detected is arranged on the operation platform;First image acquisition component, second image acquisition component and third image acquisition component are arranged in the circumferential direction of the rotation disc;Wherein, first image acquisition component and third image acquisition component are used to image shooting on the upper part of pocket hole and the lower part of pocket hole of cage, and the image data obtained by shooting is transmitted to data processing terminal;Data processing terminal compares the received image data with preset standard data, to judge whether the bottom height of cage meets the requirements;Second image acquisition component is used for image shooting transmission to data processing terminal on the window beam part of cage;Data processing terminal compares the image data with preset standard, to judge whether there is leakage in the slope of cage.

Description

Technical Field

[0001] This application belongs to the field of cage inspection technology, and in particular relates to a visual inspection device for detecting the bottom height and slope leakage of a cage. Background Technology

[0002] The cage is one of the key components of a rolling bearing. Its main function is to guide and maintain the rolling elements on the correct trajectory, evenly separate the rolling elements, and prevent them from colliding and rubbing against each other. This ensures smooth and efficient bearing operation, reduces energy loss, and extends bearing life. In various mechanical equipment, such as automobiles, aerospace equipment, and precision machine tools, the performance of the bearing directly affects the operational stability and reliability of the entire equipment, and the quality of the cage largely determines the bearing's performance. Therefore, rigorous quality testing of the cage is a crucial step in ensuring the quality of the bearing and even the entire mechanical equipment.

[0003] In the traditional process of inspecting the thickness of the upper and lower side beams of the retainer window opening, manual measurement using calipers, micrometers, and other measuring tools is primarily relied upon. Inspectors need to precisely place the measuring tools at designated positions on the upper and lower side beams of the window opening, read the measurement data, and compare it with the standard thickness value to determine whether it is qualified. For the inspection of the slope quality of the retainer window beam, the traditional method also relies on manual visual inspection. Inspectors visually inspect the surface of the window beam to determine if there is any leakage. However, this inspection method is prone to misjudgment and omissions. In large-scale production, the number of retainers to be inspected is large, and manual visual inspection of each one is not only slow, but also easily leads to eye fatigue for inspectors due to prolonged concentration, further reducing inspection efficiency and accuracy. It is difficult to provide accurate feedback information on the production process, which is not conducive to optimizing and improving the production process. Therefore, the existing technology needs further improvement and enhancement. Utility Model Content

[0004] This invention provides a visual inspection device for detecting the bottom height of a retainer and the leakage of a slope, solving the problems of low efficiency, large error, and delayed feedback in traditional manual inspection of the bottom height of a retainer and the leakage of a slope.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A visual detection device for detecting the bottom height and pressed slope missing pressing of a cage, comprising an operating platform, wherein a rotating disk for placing the cage to be detected and driving the cage to rotate is arranged on the operating platform; a first image acquisition assembly, a second image acquisition assembly and a third image acquisition assembly are arranged in the circumferential direction of the rotating disk; in the vertical direction, the second image acquisition assembly is located at the middle position between the first image acquisition assembly and the third image acquisition assembly; wherein the first image acquisition assembly and the third image acquisition assembly are configured to capture images of the upper part and the lower part of the pocket of the cage, and transmit the captured image data to a data processing terminal; the data processing terminal compares the received image data with preset standard data, so as to determine whether the bottom height of the cage meets the requirement; the second image acquisition assembly is configured to capture images of the window beam part of the cage, and transmit the captured image data to the data processing terminal; the data processing terminal compares the image data with a preset standard, so as to determine whether there is a missing pressing condition at the pressed slope of the cage.

[0007] In a preferred implementation, the first image acquisition assembly, the second image acquisition assembly and the third image acquisition assembly each comprise a camera and a lighting device matched with the camera, and the lighting device is configured to provide appropriate lighting conditions for image capturing by the camera, so as to ensure the clarity and accuracy of the captured images.

[0008] In a preferred implementation, a laser sensor is further arranged on the operating platform, when the cage rotates along with the rotating disk and the laser sensor corresponds to the position of the window beam of the cage, the laser sensor sends a photographing signal to the first image acquisition assembly, the second image acquisition assembly and the third image acquisition assembly; after receiving the photographing signal, the first image acquisition assembly and the third image acquisition assembly perform image capturing, and transmit the captured image data to the data processing terminal.

[0009] In a preferred implementation, after the cage rotates one circle, it stops, the data processing terminal determines whether the cage is qualified according to the data acquired by the first image acquisition assembly, the second image acquisition assembly and the third image acquisition assembly, and sends out an audible and visual alarm prompt for unqualified cages.

[0010] In a preferred implementation, the first image acquisition assembly, the second image acquisition assembly and the third image acquisition assembly are respectively installed on three groups of vertical slide tables and can move vertically relative to the vertical tables, so as to adjust the height position to correspond to cages of different heights.

[0011] In a preferred implementation, the vertical slide table comprises extension parts of vertical tables at both ends, a first lead screw passes through the two extension parts, one end of the first lead screw is connected with a crank, a first moving seat is arranged on the first lead screw, and the first image acquisition assembly, the second image acquisition assembly and the third image acquisition assembly are installed on the first moving seat.

[0012] In a preferred embodiment, the vertical slide table is further provided with a vertical slide rail, the center of the first movable seat is a mounting hole that cooperates with the first lead screw, and the two sides of the mounting hole are provided with first sliders, which are connected to the vertical slide rail.

[0013] In a preferred embodiment, a horizontal slide frame is further included. The horizontal slide frame has support parts at both ends that are perpendicular to the horizontal slide frame. The horizontal slide frame has a second lead screw that passes through the two parallel support parts and is connected to a crank handle at one end. The second lead screw has a second movable seat. The middle of the second movable seat is a mating hole. The second lead screw passes through the mating hole. The two sides of the mating hole are second sliders. The horizontal slide frame has a horizontal slide rail that mates with the second slider. The second slider and the horizontal slide rail are connected. The vertical frame is located on the upper side of the second movable seat.

[0014] In a preferred implementation, the rotating disk is connected to a speed reducer and a servo motor, and the servo motor is electrically connected to a controller.

[0015] In a preferred embodiment, the rotating disk is provided with a plurality of support claws, which are capable of moving radially to abut against the inner wall of the retainer to position the retainer.

[0016] The above structure has the following beneficial effects:

[0017] The three sets of image acquisition components not only greatly shorten the inspection time of a single item, but also avoid the positional deviation and reading error of manual caliper operation through non-contact measurement, significantly improving the repeatability accuracy of bottom height detection; thus greatly improving the accuracy and efficiency of leakage pressure detection, and realizing the detection operation of maintaining frame height accuracy and high efficiency. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain this application and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic three-dimensional structural diagram illustrating one embodiment of the visual inspection device for detecting the bottom height of the retaining frame and the slope leakage of the retaining frame, as described in this application;

[0020] Figure 2 A schematic three-dimensional structural diagram illustrating one embodiment of the vertical slide table and the horizontal slide table of this application is shown.

[0021] Figure 3 A schematic diagram illustrating one embodiment of the rotary motor inside the operating platform of this application is shown.

[0022] Figure 4 A schematic diagram illustrating one embodiment of the layout of the image components in this application is shown.

[0023] Label Explanation:

[0024] 1. Operating platform; 10. Lighting device; 11. Laser sensor; 12. Support claw; 2. Rotating disk; 20. Reducer; 21. Servo motor; 22. Coupling; 3. First image acquisition component; 4. Second image acquisition component; 5. Third image acquisition component; 6. Vertical slide frame; 60. Extension; 61. Vertical slide rail; 62. First lead screw; 63. First moving seat; 631. First slider; 7. Horizontal slide frame; 70. Support; 71. Horizontal slide rail; 72. Second lead screw; 73. Third moving seat; 731. Second slider; 8. Industrial control integrated computer. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit and scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0026] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In this utility model, unless otherwise expressly specified and limited, the first feature being "upper" or "lower" than the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] In this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0029] The present invention will now be described with reference to the accompanying drawings.

[0030] The specific solution adopted is as follows:

[0031] like Figure 1-4 As shown, this utility model provides a visual inspection device for detecting the bottom height and slope leakage of a retainer. It includes an operating platform 1, on which a rotating disk 2 is placed and rotates the retainer to be inspected. A first image acquisition component 3, a second image acquisition component 4, and a third image acquisition component 5 are arranged circumferentially on the rotating disk 2. Vertically, the second image acquisition component 4 is positioned between the first image acquisition component 3 and the third image acquisition component 5. The first and third image acquisition components 3 and 5 capture images of the upper and lower parts of the retainer's pockets and transmit the captured image data to a data processing terminal. The data processing terminal compares the received image data with preset standard data to determine whether the bottom height of the retainer meets the requirements. The second image acquisition component 4 captures images of the retainer's window beam area and transmits the captured image data to the data processing terminal. The data processing terminal compares this image data with a preset standard to determine whether there is any leakage at the slope of the retainer.

[0032] By employing the visual inspection equipment described in this application, an automated continuous rotation function for the cage is achieved. In the circumferential direction of the rotating disk 2, the first and third image acquisition components 5 simultaneously capture vertical images of the upper and lower walls of the window, identifying the size information of each window and transmitting this data to a data processing terminal. This terminal can be an integrated industrial control computer 8 with a PLC. The PLC compares and analyzes the acquired data with the maximum and minimum values ​​within a reasonable range. If the difference is greater than 0.4 mm, the product is deemed unqualified.

[0033] In addition, the second image acquisition component 4 is specifically designed to capture images of the window beam area. Its detection logic is based on the significant difference in the surface rib width of the window beam before and after slope pressing. By accurately measuring the surface rib width and comparing it with standard values, it can confirm whether there is any slope leakage, effectively improving the accuracy of slope leakage detection.

[0034] The three sets of cameras work in parallel, enabling seamless integration of the inspection process with the production line. This ensures high precision and efficiency in cage inspection, significantly reducing the inspection time for a single piece from several minutes in traditional methods to seconds. Furthermore, the use of non-contact measurement effectively avoids positional deviations and reading errors that may occur when using calipers manually, greatly improving the repeatability and accuracy of bottom height inspection.

[0035] After the cage rotates one full revolution, it stops. The data processing terminal determines whether the data is qualified based on the data collected by the first image acquisition component 3, the second image acquisition component 4, and the third image acquisition component 5. If the data is not qualified, an audible and visual alarm is issued.

[0036] The parallel operation of the three image acquisition components and the feedback mechanism of the data processing terminal enable seamless integration of the inspection process with the production line, achieving high-precision and efficient inspection of rack height. The inspection time for a single piece is significantly reduced compared to traditional manual inspection methods. Furthermore, non-contact measurement avoids positional deviations and reading errors caused by manual operation, significantly improving the repeatability and accuracy of bottom height detection. It also reduces the workload of manual visual inspection, greatly enhancing the accuracy and efficiency of leakage pressure detection.

[0037] See Figure 1 The first image acquisition component 3, the second image acquisition component 4, and the third image acquisition component 5 are all composed of a camera and a matching lighting device 10. The main function of the lighting device 10 is to provide suitable lighting conditions for the camera to take pictures, thereby ensuring that the captured images have sufficient clarity and accuracy.

[0038] See the actual layout. Figure 1 Since the three image acquisition components are spatially adjacent, the design can be optimized to use only one shared lighting device 10 (i.e., light source). The illumination range of this light source is carefully planned to fully cover the shooting areas of the three cameras, ensuring that each camera can acquire images under sufficient and uniform lighting.

[0039] In terms of equipment selection, intelligent industrial cameras with 5 megapixels or higher resolution are chosen to meet the requirements of high-precision inspection. The light source adopts a layout that illuminates from inside the cage towards the camera position. This design effectively highlights the characteristic details of the cage, further improving image quality and providing a reliable guarantee for subsequent accurate inspection.

[0040] Furthermore, a laser sensor 11 is configured on the operating platform 1. When the retainer begins to rotate with the rotating disk 2, due to the structural differences between different parts of the retainer (window beam and pocket), the distance values ​​measured by the laser sensor 11 at the corresponding window beam position and the corresponding pocket position will be significantly different. The industrial control PLC system controlling the close-range shooting is set with a specific distance value corresponding to the window beam position. When the distance value measured by the laser sensor 11 matches this value, it determines that the corresponding position is the window beam position and immediately sends a photo-taking signal to the first image acquisition component 3, the second image acquisition component 4, and the third image acquisition component 5. After receiving this photo-taking signal, the first image acquisition component 3 and the third image acquisition component 5 quickly perform image capturing operations and transmit the captured image data to the data processing terminal in real time for further analysis and processing.

[0041] As a preferred embodiment of this application, see [link to application]. Figure 2 To improve the equipment's adaptability to cages of different specifications, the first, second, and third image acquisition components 5 all adopt an adjustable installation design: the three components are fixed on independent vertical slides 6 and have the function of moving freely along the vertical direction of the slide. The height can be adjusted to accurately match the detection requirements of cages of different heights.

[0042] In terms of specific structure, the vertical slide frame 6 consists of extensions 60 perpendicular to the frame at both ends, forming a frame. A first lead screw 62 passes through both extensions 60 and has a crank handle at one end as the drive end. A first movable seat 63 is fitted onto the first lead screw 62, and all three image acquisition components are mounted on this movable seat. To ensure movement stability, a vertical slide rail 61 is provided on the side of the slide frame. The first movable seat 63 has a mounting hole in the middle that mates with the threaded first lead screw 62, and first sliders 631 are embedded on both sides to form a sliding connection with the slide rail. During operation, rotating the crank handle will drive the first lead screw 62 to rotate, and the first movable seat 63 will rise and fall smoothly along the vertical slide rail 61 through threaded transmission, thereby realizing the vertical position adjustment of the image acquisition components.

[0043] This design, through the synergistic effect of mechanical transmission and guide rail constraints, ensures both the accuracy and repeatability of height adjustment, and enables a single device to be compatible with the inspection of multiple cage specifications, significantly improving the flexibility of the production line and avoiding the cost waste of configuring multiple dedicated devices due to product size differences.

[0044] Furthermore, to further expand the equipment's adaptability to testing cages of different sizes, this design adds horizontal adjustment to the original vertical slide table 6, forming a two-dimensional adjustable composite slide table system: for details, see... Figure 2The horizontal slide frame 7 serves as the basic frame, with support sections 70 extending vertically from both ends. A second lead screw 72 passes through the two parallel support sections 70 and is driven by a crank handle. The second movable seat mounted on the second lead screw 72 has a threaded engagement hole in the middle, and second sliders 731 are embedded on both sides to form a sliding connection with the guide rail on the horizontal slide frame 7. The vertical slide frame 6 is fixed to the upper surface of the second movable seat.

[0045] When it is necessary to adapt to cages of different diameters, the operator drives the second lead screw 72 to rotate by rotating the horizontal crank, and the second moving seat moves horizontally, causing the vertical slide table 6 to move synchronously. Combined with the aforementioned vertical adjustment function, it can cover the testing needs of various cages with significant differences in diameter and height. Through the rigidity of mechanical positioning and the precision characteristics of lead screw transmission, the repeatability and positioning accuracy of the testing system are maintained while improving equipment compatibility.

[0046] See Figure 3 To achieve control and stable drive of the rotation speed of the rotating disk 2, this design adopts a power transmission scheme in which the servo motor 21 and the reducer 20 work together: the rotating disk 2 is rigidly connected to the output shaft of the reducer 20 through the coupling 22, and the input end of the reducer 20 is axially connected to the servo motor 21. The servo motor 21 is the core drive unit, and its control end is electrically connected to the controller through the signal line. The controller can send pulse commands to the servo motor 21 based on the preset process parameters to adjust the motor speed, direction and start / stop status in real time.

[0047] In a preferred embodiment of this application, to ensure stable positioning of cages of different specifications during rotation, the rotating disk 2 is provided with multiple support claws 12. These support claws 12 are capable of radial movement to abut against the inner wall of the cage for positioning. Specifically, a T-shaped groove can be radially formed on the surface of the rotating disk 2 as a moving track, and the bottom of the support claw 12 matches a T-shaped slider in the groove. During operation, the support claw 12 is manually pushed radially along the groove until it contacts the inner wall of the cage. Then, a locking block is inserted into the groove to abut one end of the T-shaped slider, restricting its movement. This solution is simple in structure and low in cost, suitable for small-batch, multi-specification switching scenarios.

[0048] Equipment usage procedure:

[0049] 1. Place the product on the rotating disc 2 and position it using the support claw 12;

[0050] 2. Adjust the camera height to ensure the camera's shooting position meets the inspection requirements, and adjust the distance between the camera and the product surface to meet the requirement of 120mm;

[0051] 3. Adjust the sensor position;

[0052] 4. Start the equipment. Rotating disk 2 starts to rotate. The sensor determines the position of the window beam and transmits the signal to the control system to control the camera to take a picture. The picture data is sent to the PLC at the same time.

[0053] 5. After the product rotates one revolution, it stops. The PLC analyzes the data captured by the camera to determine whether the product is qualified. If it is not qualified, an audible and visual alarm will be issued.

[0054] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0055] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A visual inspection device for detecting the bottom height of a retainer and slope leakage, characterized in that, The device includes an operating platform with a rotating disk for placing and rotating a retainer to be tested. A first image acquisition component, a second image acquisition component, and a third image acquisition component are arranged circumferentially on the rotating disk. Vertically, the second image acquisition component is positioned between the first and third image acquisition components. The first and third image acquisition components capture images of the upper and lower parts of the retainer's pockets and transmit the captured image data to a data processing terminal. The data processing terminal compares the received image data with preset standard data to determine if the bottom height of the retainer meets the requirements. The second image acquisition component captures images of the retainer's window beam area and transmits the captured image data to the data processing terminal. The data processing terminal compares this image data with a preset standard to determine if there is any pressure leakage at the retainer's pressure slope.

2. The visual inspection device for detecting the bottom height of a retainer and the slope leakage according to claim 1, characterized in that, The first image acquisition component, the second image acquisition component, and the third image acquisition component all include a camera and an illumination device that is compatible with the camera. The illumination device is used to provide suitable lighting conditions for the camera to capture images, so as to ensure the clarity and accuracy of the captured images.

3. The visual inspection device for detecting the bottom height of a retainer and the slope leakage according to claim 1, characterized in that, The operating platform is also equipped with a laser sensor. When the cage rotates with the rotating disk and the laser sensor corresponds to the position of the cage window beam, it sends a photo signal to the first image acquisition component, the second image acquisition component, and the third image acquisition component. The first image acquisition component and the third image acquisition component are used to take pictures after receiving the photo signal and transmit the captured image data to the data processing terminal.

4. The visual inspection device for detecting the bottom height of a retainer and the slope leakage according to claim 1, characterized in that, After the cage rotates one full revolution, it stops. The data processing terminal determines whether the data is qualified based on the data collected by the first image acquisition component, the second image acquisition component, and the third image acquisition component. If the data is not qualified, an audible and visual alarm is issued.

5. The visual inspection device for detecting the bottom height of a retainer and the slope leakage according to claim 1, characterized in that, The first image acquisition component, the second image acquisition component, and the third image acquisition component are respectively installed on three sets of vertical slide frames and can move vertically relative to the vertical frames to adjust their height positions, corresponding to different height holders.

6. The visual inspection device for detecting the bottom height of a retainer and the slope leakage according to claim 5, characterized in that, The vertical slide frame includes extensions of vertical frames at both ends. A first lead screw passes through the two extensions and is connected to a crank handle at one end. A first movable seat is provided on the first lead screw. A first image acquisition component, a second image acquisition component, and a third image acquisition component are installed on the first movable seat.

7. The visual inspection device for detecting the bottom height of a retainer and the slope leakage according to claim 6, characterized in that, The vertical slide table is also equipped with a vertical slide rail. The center of the first movable seat has a mounting hole that mates with the first lead screw. The first sliders are located on both sides of the mounting hole and are connected to the vertical slide rail.

8. The visual inspection device for detecting the bottom height of a retainer and the slope leakage according to claim 5, characterized in that, It also includes a horizontal slide frame, with vertical support parts at both ends of the horizontal slide frame. The horizontal slide frame is equipped with a second lead screw, which passes through the two parallel support parts and is connected to a crank handle at one end. A second movable seat is provided on the second lead screw, with a mating hole in the middle of the second movable seat. The second lead screw passes through the mating hole and is set with second sliders on both sides of the mating hole. The horizontal slide frame is equipped with a horizontal slide rail that mates with the second slider. The second slider and the horizontal slide rail are connected. A vertical frame is set on the upper side of the second movable seat.

9. The visual inspection device for detecting the bottom height of a retainer and the slope leakage according to claim 1, characterized in that, The rotating disk is connected to a speed reducer and a servo motor, and the servo motor is electrically connected to a controller.

10. The visual inspection device for detecting the bottom height of a retainer and the slope leakage according to claim 1, characterized in that, The rotating disk is provided with multiple support claws, which can move radially to abut against the inner wall of the retainer to position the retainer.

Images