A visual quality inspection device for hub motor parts

Abstract

The utility model discloses a visual quality inspection device for hub motor parts, which relates to the field of visual inspection technology, and is designed to solve the problem that when the existing hub motors are visually inspected by cameras, they are affected by ambient light, resulting in a decrease in the accuracy of the captured images. The utility model comprises: a frame, an assembly block is sleeved on the outer wall of the frame, a horizontal strip-shaped bracket is installed at the front end of the assembly block, two left and right clamping blocks are installed on the outer wall of the bracket, and a mobile lighting component is installed at the front end of the clamping block; a light board is installed in the groove on the lower surface of the mobile lighting component, and through holes are opened at the middle position of the light board and the mobile lighting component, side shading components are installed on both sides of the mobile lighting component, and a rear shading component extending to both sides of the mobile lighting component is installed at the rear end of the lower surface of the mobile lighting component.

Description

Technical Field

[0001] The utility model relates to the technical field of visual inspection, in particular to a visual quality inspection device applied to wheel hub motor parts. Background Art

[0002] The wheel hub motor is a special motor used for vehicle driving. It replaces the traditional internal transmission device through the outer wheel hub component, directly converts electrical energy into kinetic energy of wheel hub rotation, and drives the wheels to start and move.

[0003] Surface defect detection of hub motor parts is a critical step in the production process. Surface defects of hub motor parts will affect several aspects of their use: If there are scratches, dents and other defects on the surface of hub motor parts, it will cause uneven flow of current, increase resistance, and thus reduce the conversion efficiency of the motor; if there are serious defects on the surface of motor parts, it will accelerate internal wear and shorten service life;

[0004] Hub motors are all judged manually, which has the following disadvantages: relying on manual labor, it is impossible to complete the detailed distribution of defects in various areas; it is impossible to complete the quantitative analysis of the severity of defects in each component; defects rely on manual experience, and there are differences in manual experience, and it is impossible to form a stable and unified defect quantification result; the lack of the above-mentioned refined distribution, severity quantification and unified quantification reduces the efficiency and accuracy of defect detection; the defect detection process is completed by manual experience, and the relevant experience of defect processes and smart factory systems cannot be effectively accumulated;

[0005] However, when using cameras for visual inspection, it is easily affected by ambient light, which causes the captured image to be affected and affects the accuracy of visual inspection. Therefore, it does not meet the existing needs. In this regard, we propose a visual quality inspection device for hub motor parts. Utility Model Content

[0006] The purpose of the utility model is to provide a visual quality inspection device for hub motor parts to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a visual quality inspection device for hub motor parts, comprising: a frame, an assembly block is sleeved on the outer wall of the frame, a horizontal strip-shaped bracket is installed at the front end of the assembly block, two left and right clamping blocks are installed on the outer wall of the bracket, and a mobile lighting assembly is installed at the front end of the clamping block;

[0008] A light board is installed in the groove on the lower surface of the mobile lighting assembly, and through holes are opened in the middle position between the light board and the mobile lighting assembly. Side shading assemblies are installed on both sides of the mobile lighting assembly, and a rear shading assembly extending to both sides of the mobile lighting assembly is installed at the rear end of the lower surface of the mobile lighting assembly.

[0009] Preferably, a first roller is installed in the slot inside the side shading component, a second roller is installed in the slot inside the rear shading component, and blackout curtains are provided on the outer walls of the first roller and the second roller.

[0010] Preferably, a handle is provided at the end of the first roller.

[0011] Preferably, a vertical screw module is installed at the upper end of the frame, a transverse screw module is installed at the front end of the vertical screw module, a machine base is installed at the front end of the transverse screw module, and a detection camera is installed at the lower end of the machine base.

[0012] Preferably, the vertical screw module and the transverse screw module both include a ball screw, a screw motor is provided at the end of the ball screw, a screw slider is installed on the outer wall of the ball screw, the vertical screw module is slidably connected to the transverse screw module through the screw slider, and the transverse screw module is slidably connected to the machine base through the screw slider.

[0013] Preferably, a base for placing hub motor parts is installed at the bottom of the frame.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model uses an assembly block to slide and adjust on the frame to adjust the height of the mobile lighting assembly. The clamping block is used to clamp and fix the mobile lighting assembly on the bracket. The lateral position of the mobile lighting assembly can be changed by moving the clamping block. The mobile lighting assembly is a square plate. The hub motor parts placed on the base are illuminated by the light board from top to bottom. Compared with side lighting, it is not easy to produce reflections. The through hole is used for the upper detection camera to perform visual inspection of the placed hub motor parts. The side shading components and the rear shading components on both sides of the mobile lighting assembly form a three-sided shading area, which effectively blocks the influence of ambient light. The front is convenient for users to adjust the orientation of the hub motor parts. The overall system is a 2D visual system with low cost.

[0016] 2. The blackout curtain is installed on the second roller in the form of a hook suspension to perform shading operations on the rear; the blackout curtain is driven to be rolled up by turning the handle on the first roller, so that the blackout curtain can be lowered when in use to block light on both sides, and stored and wound on the first roller when not in use; the side shading assembly and the rear shading assembly are both installed on the mobile lighting assembly and can move with the mobile lighting assembly, which is convenient for shading operations during visual inspection and reduces the impact of ambient light.

[0017] 3. The vertical screw module is used to drive the inspection camera to move up and down, and the height of the inspection camera is adjusted by moving up and down; the horizontal screw module is used to drive the inspection camera to move left and right to adjust the horizontal position of the inspection camera. The adjustment is performed in an electric manner to improve efficiency while avoiding errors caused by manual adjustment; during visual inspection, the inspection camera is moved and adjusted to the through hole to facilitate visual inspection of the hub motor parts placed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a bottom-up stereogram of the present utility model;

[0020] Figure 3 It is a front view of the utility model;

[0021] Figure 4 It is a side view of the utility model;

[0022] In the figure: 1. frame; 2. assembly block; 3. bracket; 4. clamping block; 5. mobile lighting assembly; 6. side shading assembly; 7. first roller; 8. turning handle; 9. through hole; 10. light board; 11. rear shading assembly; 12. second roller; 13. vertical lead screw module; 14. horizontal lead screw module; 15. ball screw; 16. lead screw motor; 17. lead screw slider; 18. machine base; 19. detection camera; 20. base; 21. blackout curtain. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figure 1-4The utility model provides an embodiment: a visual quality inspection device for hub motor parts, comprising: a frame 1, an assembly block 2 is sleeved on the outer wall of the frame 1, a horizontal strip bracket 3 is installed at the front end of the assembly block 2, two left and right clamping blocks 4 are installed on the outer wall of the bracket 3, and a mobile lighting component 5 is installed at the front end of the clamping block 4;

[0025] A light board 10 is installed in the groove on the lower surface of the mobile lighting assembly 5, and a through hole 9 is opened at the middle position between the light board 10 and the mobile lighting assembly 5. Side shading assemblies 6 are installed on both sides of the mobile lighting assembly 5. A rear shading assembly 11 extending to both sides of the mobile lighting assembly 5 is installed at the rear end of the lower surface of the mobile lighting assembly 5.

[0026] The assembly block 2 is slidably adjusted on the frame 1 to adjust the height of the mobile lighting assembly 5. The clamping block 4 is used to clamp and fix the mobile lighting assembly 5 on the bracket 3. The lateral position of the mobile lighting assembly 5 can be changed by moving the clamping block 4. The mobile lighting assembly 5 is a square plate. The hub motor parts placed on the base 20 are illuminated by the light board 10 from top to bottom. Compared with side lighting, it is less likely to produce reflections. The through hole 9 is used for the upper detection camera 19 to perform visual inspection of the placed hub motor parts. The side shading components 6 and the rear shading components 11 on both sides of the mobile lighting assembly 5 form a three-sided shading area, which effectively blocks the influence of ambient light, and the front is convenient for users to adjust the orientation of the hub motor parts.

[0027] See also Figure 2 , Figure 3 , Figure 4 A first roller 7 is installed in the slot inside the side shading component 6, a second roller 12 is installed in the slot inside the rear shading component 11, and a blackout curtain 21 is provided on the outer wall of the first roller 7 and the second roller 12;

[0028] A rotating handle 8 is provided at the end of the first roller 7, and the rotating handle 8 drives the blackout curtain 21 to perform a retracting and unreeling operation on the first roller 7;

[0029] The blackout curtain 21 is mounted on the second roller 12 in a hanging manner by a hook, and is used for shading operations on the rear; the blackout curtain 21 is driven to be rolled up by rotating the handle 8 at the first roller 7, so that the blackout curtain 21 can be lowered when in use to block light on both sides, and when not in use, it is stored and wound around the first roller 7; the side shading assembly 6 and the rear shading assembly 11 are both mounted on the mobile lighting assembly 5, and can move with the movement of the mobile lighting assembly 5, so as to facilitate shading operations during visual inspection and reduce the influence of ambient light.

[0030] See also Figure 1A vertical screw module 13 is mounted on the upper end of the frame 1, a horizontal screw module 14 is mounted on the front end of the vertical screw module 13, a machine base 18 is mounted on the front end of the horizontal screw module 14, and a detection camera 19 is mounted on the lower end of the machine base 18;

[0031] The vertical screw module 13 and the horizontal screw module 14 both include a ball screw 15, a screw motor 16 is provided at the end of the ball screw 15, a screw slider 17 is installed on the outer wall of the ball screw 15, the vertical screw module 13 is slidably connected to the horizontal screw module 14 through the screw slider 17, and the horizontal screw module 14 is slidably connected to the base 18 through the screw slider 17;

[0032] The vertical screw module 13 is used to drive the detection camera 19 to move up and down, and adjust the height of the detection camera 19 by moving up and down; the horizontal screw module 14 is used to drive the detection camera 19 to move left and right, so as to adjust the lateral position of the detection camera 19, and the adjustment is performed in an electric manner, which improves efficiency and avoids errors caused by manual adjustment; during visual inspection, the detection camera 19 is moved and adjusted to the through hole 9, so as to facilitate visual inspection of the hub motor parts placed below.

[0033] See also Figure 1 The bottom of the frame 1 is provided with a base 20 for placing the hub motor parts;

[0034] The base 20 is not only used to place the hub motor parts, but also used to support and fix the frame 1 to improve its stability and firmness.

[0035] The overall module for wheel hub defect detection in this application mainly includes modules such as wheel hub image shooting, Blob analysis to obtain wheel hub defect data, algorithm analysis, sub-graph segmentation, and result analysis;

[0036] The process of the wheel hub area segmentation module includes loading the wheel hub image, the wheel hub gear and wheel disc segmentation algorithm, the gear image acquisition and the wheel disc image acquisition. The step of loading the wheel hub image is to load the result of the wheel hub image acquisition into the specific computing device of the wheel hub area segmentation algorithm. The step of the wheel hub gear and wheel disc segmentation algorithm inputs the wheel hub image, outputs the pixel-by-pixel wheel hub area segmentation result, forms the wheel hub area segmentation map, and obtains the segmented gear image and wheel disc image;

[0037] The process of the gear defect detection module includes loading a single gear image, a gear defect detection algorithm, and obtaining a gear defect image. The step of loading a single gear image is to load the previously segmented gear image into a specific computing device. The gear detection algorithm uses the defect detection algorithm to segment the gear defects in the loaded single gear image, and finally outputs the gear defect image;

[0038] The Blob analysis module process includes loading defect images, Blob analysis of defect images, defect area calculation, defect perimeter calculation and defect roundness calculation. The step of loading defect images is to load the previously obtained defect images into a specific computing device. Then perform Blob analysis on the defect image to obtain the area, perimeter and roundness of the defect.

[0039] The defect area calculation process includes loading the defect image, binarizing the image, storing the contours in the image, calculating the area of ​​the stored contours one by one, marking the calculation results in the image, and returning the area information and the visualized image. First, load the previously obtained defect image into the computing device, and then invert the image, that is, reverse the brightness value in the image. Use the threshold to perform the binarization operation to generate a binary image. Then find the contour in the image to obtain the coordinate information of the contour. Then traverse the contour information one by one and perform area calculations. Then draw the area contour in the input image, and use the previous coordinate information to mark the area value of the contour area and use the coordinates. Finally, return the contour area list and the visualized image;

[0040] The defect perimeter calculation process includes loading defect images, image binarization, storing contours in the image, calculating the perimeter of the stored contours one by one, marking the calculation results in the image, and returning the perimeter information and the visual image. First, the previously obtained defect image is loaded into the computing device, and then the image is inverted, that is, the brightness value in the image is reversed. The threshold is used for binarization to generate a binary image. Then, by finding the contour in the image, the coordinate information of the contour is obtained. Then the contour information is traversed one by one, and the perimeter calculation is performed. Then the perimeter contour is drawn in the input image, and the contour perimeter value and the coordinates are marked with the previous coordinate information. Finally, the perimeter list and the visual image are returned.

[0041] Working principle: When in use, place the hub motor parts to be tested on the base 20, adjust the height of the bracket 3 through the assembly block 2, clamp the mobile lighting assembly 5 on the bracket 3 through the clamp block 4, and make the mobile lighting assembly 5 between the base 20 and the detection camera 19;

[0042] The detection camera 19 is driven to move onto the through hole 9 by the horizontal lead screw module 14, and the distance between the detection camera 19 and the through hole 9 is adjusted by the vertical lead screw module 13;

[0043] The first roller 7 is rotated by the handle 8 to lower the blackout curtains 21 on both sides, and the blackout curtains 21 are hung on the second roller 12 to shield the rear;

[0044] Turn on the light board 10 to illuminate the hub motor parts, turn on the detection camera 19 to shoot the hub motor parts below, and feed the data obtained from the shooting to the computer. The user adjusts the position of the hub motor parts in the unshaded area in front and replaces the hub motor parts.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A visual quality inspection device for hub motor parts, characterized in that: It comprises a frame (1), an assembly block (2) is sleeved on the outer wall of the frame (1), a horizontal strip-shaped bracket (3) is installed at the front end of the assembly block (2), two left and right clamping blocks (4) are installed on the outer wall of the bracket (3), and a movable lighting assembly (5) is installed at the front end of the clamping block (4); A light board (10) is installed in the groove on the lower surface of the mobile lighting assembly (5), and through holes (9) are opened at the middle position between the light board (10) and the mobile lighting assembly (5). Side shading assemblies (6) are installed on both sides of the mobile lighting assembly (5), and a rear shading assembly (11) extending to both sides of the mobile lighting assembly (5) is installed at the rear end of the lower surface of the mobile lighting assembly (5).

2. A visual quality inspection device for hub motor parts according to claim 1, characterized in that: A first roller (7) is installed in the slot inside the side shading component (6), a second roller (12) is installed in the slot inside the rear shading component (11), and a shading curtain (21) is provided on the outer wall of each of the first roller (7) and the second roller (12).

3. A visual quality inspection device for hub motor parts according to claim 2, characterized in that: A rotating handle (8) is provided at the end of the first roller (7).

4. The visual quality inspection device for hub motor parts according to claim 1 is characterized in that: A vertical screw module (13) is installed at the upper end of the frame (1), a horizontal screw module (14) is installed at the front end of the vertical screw module (13), a machine base (18) is installed at the front end of the horizontal screw module (14), and a detection camera (19) is installed at the lower end of the machine base (18).

5. The visual quality inspection device for hub motor parts according to claim 4 is characterized in that: The vertical screw module (13) and the transverse screw module (14) both include a ball screw (15), a screw motor (16) is provided at the end of the ball screw (15), a screw slider (17) is installed on the outer wall of the ball screw (15), the vertical screw module (13) is slidably connected to the transverse screw module (14) via the screw slider (17), and the transverse screw module (14) is slidably connected to the machine base (18) via the screw slider (17).

6. The visual quality inspection device for hub motor parts according to claim 1 is characterized in that: The bottom of the frame (1) is provided with a base (20) for placing hub motor parts.

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