Workpiece surface defect detection device

Abstract

The utility model relates to the technical field of workpiece defect detection, and discloses a workpiece surface defect detection device which comprises a bearing platform, a conveying mechanism, a detection mechanism and a distance detection assembly. The conveying mechanism comprises a conveying belt, and a to-be-detected workpiece is placed on the conveying belt. The detection mechanism comprises a mechanical arm and a visual detection module, and the mechanical arm can drive the visual detection module to move so as to shoot the to-be-detected workpiece. The distance detection assembly is arranged on the bearing platform and used for detecting the distance between the first end and the second end. According to the workpiece surface defect detection device, the position of the to-be-detected workpiece can be adjusted through the conveying belt according to the size of the to-be-detected workpiece, so that complete image information of the to-be-detected workpiece is obtained, and the surface defect detection requirements of workpieces of different specifications and types are met. The mode that the mechanical arm is matched with the visual detection module to shoot images to analyze the surface defects is adopted, automatic detection can be achieved, the detection efficiency is high, the batch production requirement is met, the detection standard can be unified, and the detection accuracy is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of workpiece defect detection technology, and in particular to a workpiece surface defect detection device. Background Technology

[0002] Aerospace-grade aluminum alloy anodizing film is a special type of anodizing film used in the aerospace industry. It is formed by converting the surface of the aluminum alloy into an oxide layer, thus protecting and strengthening the aerospace-grade aluminum alloy material. During the workpiece manufacturing process, defects in the anodizing film on the workpiece surface can occur due to the influence of production processes and the environment. Therefore, it is necessary to inspect the workpiece surface for defects before it is put into use.

[0003] In existing technologies, traditional methods for detecting defects in anodized films rely on visual inspection, which involves manually inspecting the workpiece surface. Specifically, this involves using natural light or a colorimeter, with the line of sight perpendicular to the sample surface or at a 45° angle to the surface normal, and comparing the result with a reference sample. This manual visual inspection method suffers from poor consistency in inspection standards, high labor intensity, and low efficiency, making it difficult to meet the demands of mass production. While some methods employ machine vision inspection, these typically place the workpiece in a fixed position, limiting the inspection range and failing to meet the inspection needs of workpieces of different specifications and types.

[0004] Therefore, there is an urgent need for a workpiece surface defect detection device to solve the above problems. Utility Model Content

[0005] Based on the above problems, the purpose of this utility model is to provide a workpiece surface defect detection device that can detect different types of workpiece surface defects, and has high detection efficiency and good detection accuracy.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A workpiece surface defect detection device is provided, comprising:

[0008] Platform;

[0009] A conveying mechanism includes a conveyor belt, which is tractably mounted on the carrying platform, and the workpiece to be inspected is placed on the conveyor belt;

[0010] The inspection mechanism includes a robotic arm and a vision inspection module disposed on the robotic arm. The robotic arm can drive the vision inspection module to move in order to capture images of the workpiece to be inspected.

[0011] A distance detection component is disposed on the carrier platform. The workpiece to be detected has a first end and a second end in the conveying direction of the conveyor belt. The distance detection component is used to detect the distance between the first end and the second end.

[0012] As an optional solution of the workpiece surface defect detection device of this utility model, the distance detection component includes a detection component and a positioning component. A mounting base is provided on the bearing platform, and the detection component is disposed on the mounting base. The first end of the workpiece to be detected can be aligned with the detection component. The positioning component is adjustablely disposed on the bearing platform along the conveying direction of the conveyor belt. The positioning component is used to position the second end of the workpiece to be detected. The detection component can detect the distance between itself and the positioning component.

[0013] As an optional solution for the workpiece surface defect detection device of this utility model, the bearing platform is provided with a mounting groove extending along the conveying direction of the conveyor belt, and a plurality of mounting holes are provided at intervals along the extension direction of the mounting groove. The positioning member is provided with an insertion part, which can be inserted into any of the mounting holes. Alternatively, the positioning member can be slidably disposed in the mounting groove along the extension direction of the mounting groove.

[0014] As an optional solution for the workpiece surface defect detection device of this utility model, a first magnetic element extending along the conveying direction of the conveyor belt is provided on the bearing platform, and a second magnetic element is provided on the positioning element. The second magnetic element can be magnetically attracted to the first magnetic element to fix the positioning element to the bearing platform.

[0015] Alternatively, the support platform may be made of a magnetically oriented material, and the positioning element may be magnetically fixed to the support platform.

[0016] As an optional solution for the workpiece surface defect detection device of this utility model, the detection mechanism further includes a mounting frame, and the vision detection module is fixed to the robotic arm through the mounting frame.

[0017] As an optional solution for the workpiece surface defect detection device of this utility model, the mounting bracket includes:

[0018] The connecting seat is fixedly connected to the robotic arm;

[0019] The cantilever arm has one end fixedly connected to the connecting seat, and the other end extends outward along the extension direction of the robotic arm. A mounting plate is provided at the end of the cantilever arm away from the connecting seat, and the vision inspection module is fixed to the mounting plate.

[0020] As an optional solution for the workpiece surface defect detection device of this utility model, the conveying mechanism further includes a driving component, a driving roller and a driven roller. The driving roller and the driven roller are respectively disposed at both ends of the bearing platform and are rotatably connected to the bearing platform. The conveyor belt is wrapped around the driving roller and the driven roller. The output end of the driving component is connected to the driving roller and is used to drive the driving roller to rotate.

[0021] As an optional solution for the workpiece surface defect detection device of this utility model, the workpiece surface defect detection device further includes an industrial control computer, which is communicatively connected to the conveying mechanism and the detection mechanism, and is able to display the information of the workpiece to be detected acquired by the vision detection module.

[0022] As an optional solution for the workpiece surface defect detection device of this utility model, the vision detection module has a first shooting angle, a second shooting angle and a third shooting angle, and the robotic arm can drive the vision detection module to switch between the first shooting angle, the second shooting angle and the third shooting angle.

[0023] As an optional solution for the workpiece surface defect detection device of this utility model, the detection mechanism includes a six-axis robot, and the robotic arm is the robotic arm of the six-axis robot.

[0024] The beneficial effects of this utility model are as follows:

[0025] The workpiece surface defect detection device provided by this utility model, when performing workpiece surface defect detection, places the workpiece to be detected on a conveyor belt. A distance detection component measures the distance between the first and second ends of the workpiece to obtain the length of the workpiece. Based on the data detected by the distance detection component, it can be determined whether the working range of the robotic arm can cover the workpiece. If it can, the conveyor belt can stop working, and the robotic arm drives the vision detection module to capture image information of the outer surface of the workpiece. If the working range of the robotic arm cannot cover the workpiece, after the robotic arm drives the vision detection module to capture a portion of the workpiece within its current area, the conveyor belt is controlled to move the undetected portion of the workpiece below the vision detection module, allowing the robotic arm to drive the vision detection module to detect the undetected portion. This process is repeated until all areas of the workpiece are detected, ultimately obtaining complete image information of the workpiece. Analyzing and judging the obtained image information reveals the surface defect status of the workpiece. This workpiece surface defect detection device can adjust the position of the workpiece to be inspected using a conveyor belt, based on its size. A robotic arm then drives a vision inspection module to acquire complete image information of the workpiece, meeting the surface defect detection needs of workpieces of different specifications and types, and offering strong versatility. By using a robotic arm in conjunction with a vision inspection module to capture and analyze surface defects, automated inspection can be achieved, resulting in high efficiency, meeting the needs of mass production, and ensuring standardized inspection accuracy. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the workpiece surface defect detection device provided in a specific embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the carrying platform and conveying mechanism provided in a specific embodiment of the present utility model (with hidden conveyor belt);

[0029] Figure 3 This is an exploded view of the testing mechanism provided in a specific embodiment of this utility model.

[0030] In the picture:

[0031] 1. Supporting platform; 2. Conveying mechanism; 3. Detection mechanism; 4. Distance detection component; 5. Industrial control computer;

[0032] 11. Mounting slot; 12. Mounting base;

[0033] 21. Conveyor belt; 22. Drive unit; 23. Drive roller; 24. Driven roller;

[0034] 30. Six-axis robot; 31. Robotic arm; 32. Vision inspection module; 33. Mounting frame;

[0035] 331. Connecting seat; 332. Cantilever arm;

[0036] 3321. Mounting plate; 3322. Reinforcing plate;

[0037] 41. Inspection component; 42. Positioning component. Detailed Implementation

[0038] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Specifically, the terms "first position" and "second position" refer to two different positions.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] like Figures 1 to 3As shown, this embodiment provides a workpiece surface defect detection device, which can detect different types of workpiece surface defects with high detection efficiency and good detection accuracy. The workpiece surface defect detection device includes a support platform 1, a conveying mechanism 2, a detection mechanism 3, and a distance detection component 4.

[0042] Among them, see Figure 1 and Figure 2 The conveying mechanism 2 includes a conveyor belt 21, which is tractably mounted on the support platform 1. The workpiece to be inspected is placed on the conveyor belt 21. The inspection mechanism 3 includes a robotic arm 31 and a vision inspection module 32 mounted on the robotic arm 31. The robotic arm 31 can drive the vision inspection module 32 to move and photograph the outer surface of the workpiece to be inspected. A distance detection component 4 is mounted on the support platform 1. The workpiece to be inspected has a first end and a second end in the conveying direction of the conveyor belt 21. The distance detection component 4 is used to detect the distance between the first end and the second end.

[0043] The workpiece surface defect detection device provided in this embodiment, when performing workpiece surface defect detection, places the workpiece to be detected on the conveyor belt 21. The distance between the first and second ends of the workpiece is measured by the distance detection component 4 to obtain the length of the workpiece to be detected. Based on the data detected by the distance detection component 4, it can be determined whether the range of motion of the robotic arm 31 can cover the workpiece to be detected. If it can cover it, the conveyor belt 21 can stop working, and the robotic arm 31 drives the vision detection module 32 to capture image information of the outer surface of the workpiece to be detected. If the range of motion of the robotic arm 31 cannot cover the workpiece to be detected, after the robotic arm 31 drives the vision detection module 32 to capture a portion of the current area of ​​the workpiece to be detected, the conveyor belt 21 is controlled to move the undetected portion of the workpiece to be detected to below the vision detection module 32, so that the robotic arm 31 drives the vision detection module 32 to detect the undetected portion. The above steps are repeated until all areas of the workpiece to be detected are detected, and finally, complete image information of the workpiece to be detected is obtained. By analyzing and judging the obtained image information, the surface defect status of the workpiece to be detected can be determined.

[0044] This workpiece surface defect detection device can adjust the position of the workpiece to be inspected using the conveyor belt 21 according to its size, so that the robotic arm 31 drives the vision inspection module 32 to acquire complete image information of the workpiece. It meets the surface defect detection needs of workpieces of different specifications and types, and has strong versatility. By using the robotic arm 31 in conjunction with the vision inspection module 32 to capture images and analyze surface defects, it can achieve automated detection, high detection efficiency, meet the needs of mass production, and standardize detection standards to ensure detection accuracy.

[0045] See Figure 1 and Figure 2The conveying mechanism 2 also includes a driving component 22, a driving roller 23, and a driven roller 24. The driving roller 23 and driven roller 24 are respectively located at both ends of the supporting platform 1 and are rotatably connected to the supporting platform 1. The conveyor belt 21 is wound around the driving roller 23 and driven roller 24. The output end of the driving component 22 is connected to the driving roller 23 and is used to drive the driving roller 23 to rotate. When it is necessary to adjust the position of the workpiece to be inspected, the driving component 22 is controlled to drive the driving roller 23 to rotate, which in turn drives the conveyor belt 21 to rotate. The driven roller 24 rotates under the drive of the conveyor belt 21, so that the conveyor belt 21 carries the workpiece to be inspected and moves, thereby adjusting the position of the workpiece to be inspected.

[0046] For example, the drive component 22 is a rotary motor, and the output shaft of the rotary motor is fixedly connected to the drive roller 23. Two spaced-apart supports are provided at both ends of the support platform 1, and the ends of the drive roller 23 and the driven roller 24 are respectively rotatably connected to the corresponding supports.

[0047] In this embodiment, see Figure 1 and Figure 3 The inspection mechanism 3 includes a six-axis robot 30, and a robotic arm 31 is the robotic arm of the six-axis robot 30. The six-axis robot 30 has a high degree of freedom and flexibility, can adapt to various trajectories and angles, and is more conducive to controlling the vision inspection module 32 to capture image information from different angles.

[0048] Optionally, see Figure 1 and Figure 2 The distance detection component 4 includes a detection element 41 and a positioning element 42. A mounting base 12 is provided on the support platform 1. The detection element 41 is set on the mounting base 12. The first end of the workpiece to be detected can be aligned with the detection element 41. The positioning element 42 is adjustablely set on the support platform 1 along the conveying direction of the conveyor belt 21. The positioning element 42 is used to position the second end of the workpiece to be detected. The detection element 41 can detect the distance between itself and the positioning element 42.

[0049] Specifically, after placing the workpiece to be inspected on the conveyor belt 21, the first end of the workpiece is aligned with the inspection piece 41. Then, the position of the positioning piece 42 is adjusted so that it aligns with the second end of the workpiece. At this point, the inspection piece 41 only needs to measure the distance between itself and the positioning piece 42 to obtain the distance between the first and second ends of the workpiece, which is the length of the workpiece. Since the installation position of the positioning piece 42 is adjustable, its position can be adjusted according to the actual length of the workpiece. Furthermore, the inspection piece 41 can measure the length of workpieces of different specifications and types, enabling the vision inspection module 32 to perform defect detection on different types of workpieces.

[0050] In this embodiment, as Figure 2As shown, both the positioning element 42 and the mounting base 12 are located on one side of the support platform 1, which does not obstruct the conveyor belt 21 and eliminates the need for a wide support platform 1, thus saving space. In other embodiments, if the support platform 1 is large enough, both the mounting base 12 and the positioning element 42 can be arranged on the platform surface of the support platform 1. Exemplarily, the positioning element 42 can be a plate-like structure, a column-like structure, etc.

[0051] Optionally, the support platform 1 includes a panel and multiple legs disposed below the panel. The panel supports the conveyor belt 21 and the workpiece to be inspected, preventing the conveyor belt 21 from being constantly under tension. The multiple legs hold the panel at a certain height, facilitating the robotic arm 31 to drive the vision inspection module 32 to photograph the workpiece to be inspected.

[0052] For example, the detection element 41 is a distance sensor, which may be an infrared ranging sensor, an ultrasonic ranging sensor, a laser ranging sensor, etc.

[0053] See Figure 1 and Figure 2 The support platform 1 is provided with a mounting groove 11 extending along the conveying direction of the conveyor belt 21, and the positioning member 42 is slidably disposed in the mounting groove 11 along the extension direction of the mounting groove 11. When adjusting the position of the positioning member 42, it is only necessary to apply external force to the positioning member 42 and slide the positioning member 42 to a position aligned with the second end of the part to be tested 41, so the position adjustment is convenient.

[0054] In some alternative embodiments, multiple mounting holes may be spaced apart along the extension direction within the mounting groove 11, and an insertion portion may be provided on the positioning member 42, which can be inserted into any of the mounting holes. After the workpiece to be inspected is positioned, the positioning member 42 can be fixed to the support platform 1 by selecting a suitable mounting hole, and the position of the positioning member 42 can also be easily adjusted.

[0055] In some alternative embodiments, a first magnetic element extending along the conveying direction of the conveyor belt 21 may be provided on the support platform 1, and a second magnetic element may be provided on the positioning element 42. The second magnetic element can magnetically attract the first magnetic element to fix the positioning element 42 to the support platform 1. That is, after adjusting the position of the positioning element 42, the positioning element 42 is fixed by magnetic attraction. The magnetic attraction method makes it easy to remove the positioning element 42 and the operation is simple. For example, the first magnetic element can be a magnetically attractable metal, and the second magnetic element is a magnet. Alternatively, both the first and second magnetic elements can be magnets with opposite magnetic poles, allowing them to magnetically attract each other.

[0056] Of course, if the support platform 1 itself is made of a magnetic material, then only the positioning element 42 needs to be provided with a magnetic element, so that the positioning element 42 is magnetically fixed to the support platform 1. For example, if the support platform 1 is made of a magnetic metal material, a magnet can be provided on the positioning element 42.

[0057] Optionally, see Figure 1 and Figure 3 The inspection mechanism 3 also includes a mounting bracket 33, through which the vision inspection module 32 is fixed to the robotic arm 31. The mounting bracket 33 ensures a reliable connection between the vision inspection module 32 and the robotic arm 31, and ensures that the robotic arm 31 can stably drive the vision inspection module 32 to acquire image information of the workpiece to be inspected.

[0058] See Figure 3 The mounting frame 33 includes a connecting seat 331 and a cantilever arm 332. The connecting seat 331 is fixedly connected to the robotic arm 31. One end of the cantilever arm 332 is fixedly connected to the connecting seat 331, and the other end extends outward along the extension direction of the robotic arm 31. A mounting plate 3321 is provided at the end of the cantilever arm 332 away from the connecting seat 331, and the vision inspection module 32 is fixed to the mounting plate 3321. The mounting plate 3321 provides a mounting base for the vision inspection module 32, allowing the vision inspection module 32 to move with the robotic arm 31. In this embodiment, the connecting seat 331 is a cross, which can be fixed to the end of the robotic arm 31 by screws, etc., for easy disassembly and installation. The cantilever arm 332 is a plate-like structure, and the mounting plate 3321 is perpendicular to the cantilever arm 332, forming an L-shaped installation space. The vision inspection module 32 is a vision camera, and the housing of the vision camera is located within the aforementioned L-shaped installation space, ensuring that the vision camera is securely installed.

[0059] Furthermore, the cantilever arm 332 and the mounting plate 3321 are integrally formed components, which can be formed by bending the plate. A reinforcing plate 3322 is provided at the end where the cantilever arm 332 is connected to the connecting seat 331. The reinforcing plate 3322 is fixedly connected to the connecting seat 331 to increase the connection stability between the cantilever arm 332 and the connecting seat 331.

[0060] Optionally, see Figure 1 The workpiece surface defect detection device also includes an industrial control computer 5, which is communicatively connected to the conveying mechanism 2 and the detection mechanism 3, and can display the information of the workpiece to be inspected acquired by the vision inspection module 32. Specifically, the industrial control computer 5 integrates a control module, an image processing module, and a display screen. The control module controls the movement of the conveying mechanism 2 and the robotic arm 31 according to the preset program, and controls the vision inspection module 32 to take pictures. The images acquired by the vision inspection module 32 are processed by the image processing module to highlight the defect location, and then the image defect information of the workpiece to be inspected is displayed on the display screen, so that the staff can intuitively grasp the defect type, location, and other information of the workpiece to be inspected.

[0061] Optionally, the visual inspection module 32 has a first shooting angle, a second shooting angle, and a third shooting angle. The robotic arm 31 can drive the visual inspection module 32 to switch between the first shooting angle, the second shooting angle, and the third shooting angle. The visual inspection module 32 can stay at any shooting angle for a preset time (e.g., 2 seconds) to obtain clear image information.

[0062] In this embodiment, the first shooting angle is 90° to the workpiece to be inspected, the second shooting angle is 45° to the workpiece to be inspected, and the third shooting angle is 30° to the workpiece to be inspected. After the robotic arm 31 moves the vision inspection module 32 to the shooting position, it needs to take pictures from three angles at this position and feed the captured image information back to the image processing module of the industrial control computer 5 for processing.

[0063] In other embodiments, the shooting angle can be rotated according to actual needs, and is not limited to the shooting angles listed above.

[0064] Optionally, the visual inspection module 32 is a visual camera. A fill light can be set above the visual camera to ensure that the captured image is clearer. A polarizing lens can also be set to reduce the impact of light on the clarity of the captured image.

[0065] In this embodiment, the image processing module includes a traditional image model and a deep learning model. The image information acquired by the visual inspection module 32 is first preprocessed using a traditional image model to highlight defects, and then fed into the deep learning model for processing. This model can analyze and detect the defect type and calculate the coordinate position of the defect on the workpiece to be inspected. The defect results are displayed on the screen. The deep learning model is the YOLO v5 model, which has high detection efficiency, good detection accuracy, can detect defects as small as 0.05mm, has good repeatability, and outputs stable defect detection results.

[0066] The working process of the workpiece surface defect inspection device provided in this embodiment is as follows:

[0067] The workpiece to be inspected is placed on the conveyor belt 21 on the carrier platform 1, so that the first end of the workpiece to be inspected is aligned with the position of the inspection piece 41. Then the position of the positioning piece 42 is adjusted so that the positioning piece 42 is aligned with the second end of the workpiece to be inspected. The inspection piece 41 measures the distance between itself and the positioning piece 42 and transmits the data to the industrial control computer 5.

[0068] The industrial control computer 5 determines the movement path of the robotic arm 31 based on the size of the workpiece to be inspected. For example, if the range of motion of the robotic arm 31 cannot cover all areas of the workpiece, it controls the robotic arm 31 to move along a preset path, driving the vision inspection module 32 to take pictures at least three angles at each shooting position, such as 90°, 45°, and 30°. Each shooting angle is paused for 2 seconds, and the captured images are transmitted to the image processing module of the industrial control computer 5. After the current area is captured, the conveyor belt 21 is controlled to move the uninspected part of the workpiece to be inspected below the vision inspection module 32 for another shot, until the entire area of ​​the workpiece is captured. Then, the workpiece is removed. The image processing module processes the images acquired by the vision inspection module 32, and the display screen shows the defect information of the workpiece.

[0069] The workpiece surface defect detection device in this embodiment can detect up to dozens of defects, providing accurate defect data for aerospace aluminum alloy workpieces, providing data support for subsequent rework and grinding, and effectively ensuring the surface treatment effect of aluminum alloy workpieces.

[0070] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A workpiece surface defect detection device, characterized in that, include: Platform (1); The conveying mechanism (2) includes a conveyor belt (21), which is tractably disposed on the bearing platform (1), and the workpiece to be inspected is placed on the conveyor belt (21); The inspection mechanism (3) includes a robotic arm (31) and a vision inspection module (32) disposed on the robotic arm (31). The robotic arm (31) can drive the vision inspection module (32) to move in order to photograph the workpiece to be inspected. A distance detection component (4) is disposed on the carrier platform (1). The workpiece to be detected has a first end and a second end in the conveying direction of the conveyor belt (21). The distance detection component (4) is used to detect the distance between the first end and the second end.

2. The workpiece surface defect detection device according to claim 1, characterized in that, The distance detection component (4) includes a detection element (41) and a positioning element (42). A mounting base (12) is provided on the carrying platform (1). The detection element (41) is disposed on the mounting base (12). The first end of the workpiece to be detected can be aligned with the detection element (41). The positioning element (42) is configurably disposed on the carrying platform (1) along the conveying direction of the conveyor belt (21). The positioning element (42) is used to position the second end of the workpiece to be detected. The detection element (41) can detect the distance between itself and the positioning element (42).

3. The workpiece surface defect detection device according to claim 2, characterized in that, The carrying platform (1) is provided with a mounting groove (11) extending along the conveying direction of the conveyor belt (21). Multiple mounting holes are provided at intervals in the mounting groove (11) along its extension direction. The positioning member (42) is provided with a plug-in part, which can be plugged into any of the mounting holes. Alternatively, the positioning member (42) can be slidably disposed in the mounting groove (11) along the extension direction of the mounting groove (11).

4. The workpiece surface defect detection device according to claim 2, characterized in that, The carrying platform (1) is provided with a first magnetic element extending along the conveying direction of the conveyor belt (21), and the positioning element (42) is provided with a second magnetic element. The second magnetic element can magnetically attract the first magnetic element to fix the positioning element (42) to the carrying platform (1). Alternatively, the support platform (1) may be made of a magnetically pleasing material, and the positioning element (42) may be magnetically fixed to the support platform (1).

5. The workpiece surface defect detection device according to claim 1, characterized in that, The detection mechanism (3) also includes a mounting bracket (33), and the visual detection module (32) is fixed to the robotic arm (31) through the mounting bracket (33).

6. The workpiece surface defect detection device according to claim 5, characterized in that, The mounting bracket (33) includes: The connecting seat (331) is fixedly connected to the robotic arm (31); The cantilever arm (332) has one end fixedly connected to the connecting seat (331) and the other end extending outward along the extension direction of the robotic arm (31). The end of the cantilever arm (332) away from the connecting seat (331) is provided with a mounting plate (3321), and the vision detection module (32) is fixed to the mounting plate (3321).

7. The workpiece surface defect detection device according to any one of claims 1-6, characterized in that, The conveying mechanism (2) further includes a driving member (22), a driving roller (23) and a driven roller (24). The driving roller (23) and the driven roller (24) are respectively disposed at both ends of the bearing platform (1) and are rotatably connected to the bearing platform (1). The conveyor belt (21) is wrapped around the driving roller (23) and the driven roller (24). The output end of the driving member (22) is connected to the driving roller (23) and is used to drive the driving roller (23) to rotate.

8. The workpiece surface defect detection device according to any one of claims 1-6, characterized in that, The workpiece surface defect detection device also includes an industrial control computer (5), which is communicatively connected to the conveying mechanism (2) and the detection mechanism (3), and is able to display the information of the workpiece to be detected obtained by the vision detection module (32).

9. The workpiece surface defect detection device according to any one of claims 1-6, characterized in that, The visual detection module (32) has a first shooting angle, a second shooting angle and a third shooting angle, and the robotic arm (31) can drive the visual detection module (32) to switch between the first shooting angle, the second shooting angle and the third shooting angle.

10. The workpiece surface defect detection device according to any one of claims 1-6, characterized in that, The detection mechanism (3) includes a six-axis robot (30), and the robotic arm (31) is the robotic arm of the six-axis robot (30).

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