Method and device for synchronously detecting surface profile and oxidation defect of metal

Abstract

The invention provides a synchronous detection method for a metal surface profile and an oxidation defect. The synchronous detection method is characterized by specifically comprising the following steps: step 1, building a system; step 2, image acquisition; step 3, pretreatment; 4, feature extraction and segmentation: extracting features such as area, perimeter, gray level and texture, and removing pseudo defects through morphological processing; 5, model identification and classification; and step 6, performing post-processing and linkage, rechecking suspicious areas, performing linkage sorting or alarming, and generating a detection report and statistical data. When the device is used, the side of a workpiece pushes the movable seat to move, the movable seat loses support to the limiting seat after moving, the limiting seat moves downwards to the top of the workpiece, the light supplementing lamps on the limiting seat are located on the two sides of the workpiece, and light supplementing on the two sides is matched with shooting equipment on the top to synchronously detect the metal surface contour and oxidation defects; meanwhile, after the limiting seat and the movable seat are staggered, the limiting seat limits the workpiece up and down.

Description

Technical Field

[0001] This invention relates to the field of metal surface inspection equipment, specifically to a method and device for simultaneous detection of metal surface contours and oxidation defects. Background Technology

[0002] After the metal workpiece is processed, it is necessary to inspect the surface contour and oxidation defects of the metal workpiece to ensure that the quality of the metal workpiece is qualified. In the process of inspecting the surface contour and oxidation defects of the metal workpiece, people often use optical equipment for inspection.

[0003] According to patent document CN218916303U, a method for detecting the roughness of metal surfaces is provided. This method includes a testing platform with fixed feet welded to its bottom and a support frame fixedly connected to its top. The support frame contains an adjustment assembly, which includes a motor, a first lead screw, a fixed bearing, a moving block, a first threaded hole, a second slider, and a second slide groove. An electric telescopic rod is fixedly connected to the front of the moving block, and a testing head is located at one end of the electric telescopic rod. This technical solution allows for adjustment of the testing head's height. When the height of the workpiece changes, the height of the testing head can be adjusted promptly, facilitating the testing of the workpiece's metal surface. The electric telescopic rod also facilitates longitudinal testing of the workpiece's metal surface, making it more user-friendly. However, while this solution achieves adjustable testing, it cannot simultaneously clamp and limit the workpiece while providing supplementary lighting, which is inconvenient during use. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a method and device for simultaneous detection of metal surface contours and oxidation defects, thereby solving the problems mentioned in the background art. In use, the side of the workpiece pushes the movable seat to move. After the movable seat moves, it loses support for the limiting seat. The limiting seat moves downward and then to the top of the workpiece. The supplementary lights on the limiting seat are located on both sides of the workpiece. The supplementary lights on both sides work together with the imaging device on the top to simultaneously detect the metal surface contours and oxidation defects. At the same time, after the limiting seat and the movable seat are misaligned, the limiting seat limits the upper and lower parts of the workpiece.

[0005] To achieve the above objectives, the present invention provides a method for simultaneous detection of metal surface contours and oxidation defects, specifically comprising the following steps:

[0006] Step 1: System setup, including industrial cameras, lenses and light sources, adapting to surface reflections and textures, and calibrating geometry and grayscale references;

[0007] Step 2: Image acquisition. During image acquisition, the detection device acquires images according to the beat and resolution to cover the entire surface and avoid missed shots and insufficient overlap.

[0008] Step 3: Preprocessing, including noise reduction, contrast enhancement, geometric correction, threshold segmentation, and highlighting defect boundaries;

[0009] Step 4: Feature extraction and segmentation, extracting features such as area, perimeter, grayscale, and texture, and performing morphological processing to remove false defects;

[0010] Step 5: Model recognition and classification. Use models such as SVM / CNN / YOLO to identify defects such as oxide scale and uneven oxidation, and output their location and size.

[0011] Step Six: Post-processing and linkage, verify suspicious areas, link up sorting or alarm, and generate detection reports and statistical data.

[0012] A device for simultaneous detection of metal surface contour and oxidation defects implemented by the detection method as described in claim 1 includes a detection device. The detection device includes a fixed base, a fixed box is fixed to the top of the fixed base, a limiting component is movably installed on one side wall of the fixed box, the limiting component includes a mounting base, an opening is opened on the mounting base, a limiting plate is movably installed inside the opening, a receiving groove is opened on the side of the fixed box, the limiting plate is movably installed inside the receiving groove, a protrusion is welded to one end of the limiting plate, a groove is opened on the inner wall of the receiving groove, and the protrusion is movably installed inside the groove.

[0013] Furthermore, a servo motor is fixedly mounted on the top of the mounting base, and a rotating column is rotatably mounted on the bottom of the mounting base. One end of the rotating column is mounted on the servo motor via an output shaft. A fixing ring is welded onto the rotating column, and a ring seat is rotatably mounted on the bottom of the fixing ring. A fixing bolt is rotatably mounted between the ring seat and the fixing ring.

[0014] Furthermore, a connecting rod is welded to the side wall of the ring seat, and a camera is fixed to one end of the connecting rod. An annular groove is opened on the rotating column, and a workpiece is movably installed inside the annular groove. A fixing hole is opened on the inner wall of the mounting seat, and a fixing tube is rotatably installed inside the fixing hole. The fixing tube is welded and fixed to the limiting plate, and a fixing column is rotatably installed inside the fixing tube. A torsion spring is fixedly installed between the fixing column and the fixing tube, and one end of the fixing column is fixed inside the fixing hole.

[0015] Furthermore, a drive motor is fixedly installed on the side of the fixed base, an active roller and a driven roller are rotatably installed between the fixed bases respectively, the active roller is mounted on the drive motor, a conveyor belt is movably installed between the active roller and the driven roller, a fan box and an exhaust fan are fixed on the side of the fixed box respectively, and a limit post is fixed on the side of the mounting base.

[0016] Furthermore, a collection box is fixed to the bottom of the exhaust fan, an exhaust hole is opened on the side of the collection box, a dust collection bag is fixedly installed inside the collection box, the dust collection bag is installed inside the collection box by limiting bolts, and a displacement mechanism is fixedly installed on the side of the fixed base.

[0017] Furthermore, a fixing groove is formed on the inner wall of the fixing box, and a support assembly is movably installed inside the fixing groove. The support assembly includes a support base and a movable base. The movable base is movably installed at the bottom of the support base. A limit seat is movably installed on the side of the support base. A supplementary light is fixed on the side of the limit seat. A reset mechanism is fixed on the side of the movable base. One end of the reset mechanism is fixed to the inner wall of the fixing groove.

[0018] Furthermore, a slider is fixed to the side of the limiting seat, a groove is opened on the side of the support seat, a support mechanism is fixed inside the groove, one end of the support mechanism is fixed to the slider, and the slider is movably installed inside the groove.

[0019] Furthermore, both the movable seat and the limiting seat have an inclined surface on one side, a ball bearing is rotatably mounted on the side of the movable seat, and an installation groove is opened on the side of the movable seat, with a roller rotatably mounted inside the installation groove.

[0020] Furthermore, a motor base is fixed to the top of the fixed box, a ring tube is fixed to the side of the motor base, an opening is made on the side of the ring tube, an air inlet pipe is fixed to the side wall of the ring tube, an exhaust pump is fixed inside the fan box, one end of the air inlet pipe is fixed to the exhaust pump, and a blower hole is made between the bottom of the ring tube and the fixed box.

[0021] The beneficial effects of this invention are:

[0022] 1. In use, the side of the workpiece pushes the movable seat to move. After the movable seat moves, it loses support for the limiting seat. The limiting seat moves downward and then moves to the top of the workpiece. The supplementary lights on the limiting seat are located on both sides of the workpiece. The supplementary lights on both sides work together with the shooting equipment on the top to simultaneously detect the metal surface contour and oxidation defects. At the same time, after the limiting seat and the movable seat are misaligned, the limiting seat limits the upper and lower parts of the workpiece.

[0023] 2. In this invention, the mounting base is pulled outward through the limiting plate during use. After the mounting base is pulled out, the limiting column separates from one side of the fixed box. The mounting base tilts inward simultaneously under the elastic force of the torsion spring. After the mounting base tilts inward, the annular groove contacts the workpiece for support and limitation. Later, the support length for the workpiece is extended under the support and rotation of the annular groove. The workpiece is moved and detected on the conveyor belt by the rotation of the rotating column.

[0024] 3. In this invention, the ring seat rotates at the bottom of the fixed ring to adjust the tilt angle of the camera. The camera is adjusted to different angles on the side of the workpiece by rotation, and multi-point detection of the workpiece surface is achieved at different angles. After the ring seat is adjusted, it is pressed and fixed by fixing bolts. When not in use, the mounting seat retracts to the side of the fixed box for storage. When in use, the ring tube blows air upward and downward at the same time. The downward air blows air to remove dust and impurities from the surface of the workpiece, and the upward air blows air to cool the motor seat. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a method for simultaneous detection of metal surface contour and oxidation defects according to the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of a metal surface contour and oxidation defect synchronous detection device according to the present invention;

[0027] Figure 3 This is a schematic diagram of the cut-open structure of the fixing box of the synchronous detection device for metal surface contour and oxidation defects of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the support component of the synchronous detection device for metal surface contour and oxidation defects according to the present invention;

[0029] Figure 5 This is a magnified structural diagram of point B of the metal surface contour and oxidation defect synchronous detection device of the present invention;

[0030] Figure 6 This is a schematic diagram of the limiting component of a synchronous detection device for metal surface contour and oxidation defects according to the present invention;

[0031] Figure 7 This is a schematic diagram of the torsion spring in the synchronous detection device for metal surface contour and oxidation defects according to the present invention.

[0032] Figure 8 This is a magnified structural diagram of point A of the metal surface contour and oxidation defect synchronous detection device of the present invention;

[0033] Figure 9This is a top view of the limiting component of the synchronous detection device for metal surface contour and oxidation defects of the present invention after it is fitted with the workpiece.

[0034] In the diagram: 1. Fixed base; 2. Fixed box; 3. Drive motor; 4. Conveyor belt; 5. Limiting assembly; 6. Exhaust fan; 7. Collection box; 8. Exhaust vent; 9. Displacement mechanism; 10. Fan box; 11. Fixed groove; 12. Support assembly; 13. Support base; 14. Limiting base; 15. Supplementary light; 16. Movable base; 17. Support mechanism; 18. Slide groove; 19. Reset mechanism; 20. Slider; 21. Ball bearing; 22. Mounting groove; 23. 24. Roller; 25. Mounting base; 26. Opening; 27. Limiting plate; 28. Protrusion; 29. ​​Limiting post; 30. Servo motor; 31. Rotating column; 32. Fixing ring; 33. Fixing bolt; 34. Ring seat; 35. Connecting rod; 36. Camera; 37. Ring groove; 38. Fixing hole; 39. Fixing tube; 40. Fixing post; 41. Torsion spring; 42. Ring tube; 43. Air inlet pipe; 44. Opening; 45. Motor base; 46. Workpiece. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] Please see Figures 1 to 9 This invention provides a technical solution: a method for simultaneous detection of metal surface contours and oxidation defects, specifically including the following steps:

[0037] Step 1: System setup, including industrial cameras, lenses and light sources, adapting to surface reflections and textures, and calibrating geometry and grayscale references;

[0038] Step 2: Image acquisition. During image acquisition, the detection device acquires images according to the beat and resolution to cover the entire surface and avoid missed shots and insufficient overlap.

[0039] Step 3: Preprocessing, including noise reduction, contrast enhancement, geometric correction, threshold segmentation, and highlighting defect boundaries;

[0040] Step 4: Feature extraction and segmentation, extracting features such as area, perimeter, grayscale, and texture, and performing morphological processing to remove false defects;

[0041] Step 5: Model recognition and classification. Use models such as SVM / CNN / YOLO to identify defects such as oxide scale and uneven oxidation, and output their location and size.

[0042] Step Six: Post-processing and linkage, verify suspicious areas, link up sorting or alarm, and generate detection reports and statistical data.

[0043] A device for simultaneous detection of metal surface contour and oxidation defects implemented by the detection method as described in claim 1 includes a detection device. The detection device includes a fixed base 1, a fixed box 2 fixed to the top of the fixed base 1, a limiting component 5 movably installed on one side wall of the fixed box 2, the limiting component 5 including a mounting base 24, an opening 25 on the mounting base 24, a limiting plate 26 movably installed inside the opening 25, a receiving groove on the side of the fixed box 2, the limiting plate 26 movably installed inside the receiving groove, a protrusion 27 welded to one end of the limiting plate 26, a groove on the inner wall of the receiving groove, and the protrusion 27 movably installed inside the groove. A servo motor 29 is fixedly mounted on the top of the mounting base 24, and a rotating column 30 is rotatably mounted on the bottom of the mounting base 24. One end of the rotating column 30 is mounted on the servo motor 29 through an output shaft. A fixing ring 31 is welded onto the rotating column 30, and a ring seat 33 is rotatably mounted on the bottom of the fixing ring 31. A fixing bolt 32 is rotatably mounted between the ring seat 33 and the fixing ring 31. A connecting rod 34 is welded to the side wall of the ring seat 33. A camera 35 is fixed to one end of the connecting rod 34. An annular groove 36 is opened on the rotating column 30. A workpiece 45 is movably installed inside the annular groove 36. A fixing hole 37 is opened on the inner wall of the mounting base 24. A fixing tube 38 is rotatably installed inside the fixing hole 37. The fixing tube 38 is welded and fixed to the limiting plate 26. A fixing column 39 is rotatably installed inside the fixing tube 38. A torsion spring 40 is fixedly installed between the fixing column 39 and the fixing tube 38. One end of the fixing column 39 is fixed inside the fixing hole 37. Under its elastic force, the torsion spring 40 drives the mounting base 24 to rotate inward at the same time. As the mounting base 24 rotates inward, it contacts the workpiece 45. The width between the rotating columns 30 is adjusted according to the elastic force of the torsion spring 40. The width of the workpiece 45 is adaptively and quickly adjusted for use.

[0044] In this embodiment, a drive motor 3 is fixedly installed on the side of the fixed base 1. A driving roller and a driven roller are rotatably installed between the fixed bases 1. The driving roller is mounted on the drive motor 3. A conveyor belt 4 is movably installed between the driving roller and the driven roller. A fan box 10 and an exhaust fan 6 are fixedly installed on the side of the fixed box 2. A limit post 28 is fixed on the side of the mounting base 24. A collection box 7 is fixed to the bottom of the exhaust fan 6. An exhaust hole 8 is opened on the side of the collection box 7. A dust collection bag is fixedly installed inside the collection box 7. The dust collection bag is installed inside the collection box 7 by a limit bolt. A displacement mechanism 9 is fixedly installed on the side of the fixed base 1. The displacement mechanism 9 is a linear reciprocating electric push rod. The electric push rod is later connected to an external telescopic switch, which controls the telescopic movement of the displacement mechanism 9. The inner wall of the fixed box 2 has a fixed groove 11. A support assembly 12 is movably installed inside the fixed groove 11. The support assembly 12 includes a support base 13 and a movable base 16. The movable base 16 is movably installed at the bottom of the support base 13. A limit seat 14 is movably installed on the side of the support base 13. A supplementary light 15 is fixed on the side of the limit seat 14. A reset mechanism 19 is fixed on the side of the movable base 16. One end of the reset mechanism 19 is fixed to the inner wall of the fixed groove 11. The reset mechanism 19 is a reset spring. After being compressed, the reset spring generates a rebound force. Under the push of the reset mechanism 19, the movable base 16 completes the clamping and limiting of the workpiece 45. Later, under the push of the displacement mechanism 9, the inclined surface on the side of the movable base 16 cooperates with the inclined surface at the bottom of the limit seat 14 to push the limit seat 14 upward and return it to its original position.

[0045] In this embodiment, a slider 20 is fixed to the side of the limiting seat 14, and a groove 18 is formed on the side of the support seat 13. A support mechanism 17 is fixed inside the groove 18. The support mechanism 17 is a support spring. When the support spring is compressed, it contracts and generates a rebound force. The rebound force generated by the support mechanism 17 pushes the slider 20 and the limiting seat 14 downward. One end of the support mechanism 17 is fixed to the slider 20, and the slider 20 is movably installed inside the groove 18. An inclined surface is formed on one side of both the movable seat 16 and the limiting seat 14. A ball bearing 21 is rotatably installed on the side of the movable seat 16, and an installation groove 22 is formed on the side of the movable seat 16. A roller 23 is rotatably installed inside the installation groove 22. A motor base 44 is fixed to the top of the fixed box 2. A ring pipe 41 is fixed to the side of the motor base 44. An opening 43 is formed on the side of the ring pipe 41. An air inlet pipe 42 is fixed to the side wall of the ring pipe 41. An exhaust pump is fixed inside the fan box 10. One end of the air inlet pipe 42 is fixed to the exhaust pump. A blowing hole is formed between the bottom of the ring pipe 41 and the fixed box 2. Air blows from the ring pipe 41 and the blowing hole at the bottom of the fixed box 2 to the bottom. The airflow moves to both ends of the fixed box 2 and reaches the exhaust fan 6. The suction generated by the exhaust fan 6 draws dust into the collection box 7 for collection.

[0046] Working principle: The workpiece 45 is placed on the conveyor belt 4, and one end of the workpiece 45 enters between the movable seats 16. The two sides of the workpiece 45 push the movable seats 16 inward. After the movable seats 16 move inward, they press against the reset mechanism 19. Under the push of the workpiece 45, the movable seats 16 move out from the bottom of the limiting seat 14. The bottom of the limiting seat 14 loses its support force, and the support mechanism 17 pushes the slider 20 and the limiting seat 14 downward. The limiting seat 14 moves to the top of the workpiece 45 and limits its vertical movement. The limiting seat 14 limits the workpiece 45. Simultaneously, the supplementary light 15 moves to the surface of the workpiece 45, illuminating the surface of the workpiece 45. The drive motor 3 is started, driving the conveyor belt 4 to rotate. The conveyor belt 4 rotates, carrying the workpiece 45 on the roller 23. As the workpiece 45 moves, it passes the acquisition camera at the bottom of the motor base 44. The exhaust pump inside the fan box 10 is started, and the exhaust pump generates gas that enters the interior of the ring pipe 41. The ring pipe 41 and the air blowing holes at the bottom of the fixed box 2 blow air downwards. The airflow moves to both ends of the fixed box 2, moving towards the exhaust fan. At machine 6, the suction force generated by the exhaust fan 6 draws dust into the collection box 7 for collection. When the opening 43 on the side of the ring pipe 41 blows air outward, it cools the motor base 44. As the conveyor belt 4 moves the workpiece 45, one end of the workpiece 45 enters the ring groove 36, pulling the mounting base 24 outward. The mounting base 24 moves outward via the limiting plate 26. After the mounting base 24 is exposed outward, the torsion spring 40, under its elastic force, drives the mounting base 24 to rotate inward simultaneously, and the mounting base 24 rotates inward to contact the workpiece 45. The width between the rotating columns 30 is adjusted according to the elastic force of the torsion spring 40. The width of the workpiece 45 is adaptively and quickly adjusted. After the ring seat 33 rotates at the bottom of the fixed ring 31, the tilt angle of the camera 35 is adjusted. The camera 35 is adjusted to different angles on the side of the workpiece 45 by rotation. Multi-point detection of the surface of the workpiece 45 is achieved at different angles. After the ring seat 33 is adjusted, it is pressed and fixed by the fixing bolt 32. When not in use, the mounting base 24 is retracted to the side of the fixed box 2 for storage.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method for simultaneous detection of metal surface profile and oxidation defects, characterized in that: Specifically, the following steps are included: Step 1: System setup, including industrial cameras, lenses and light sources, adapting to surface reflections and textures, and calibrating geometry and grayscale references; Step 2: Image acquisition. During image acquisition, the detection device acquires images according to the beat and resolution to cover the entire surface and avoid missed shots and insufficient overlap. Step 3: Preprocessing, including noise reduction, contrast enhancement, geometric correction, threshold segmentation, and highlighting defect boundaries; Step 4: Feature extraction and segmentation, extracting features such as area, perimeter, grayscale, and texture, and performing morphological processing to remove false defects; Step 5: Model recognition and classification. Use models such as SVM / CNN / YOLO to identify defects such as oxide scale and uneven oxidation, and output their location and size. Step Six: Post-processing and linkage, verify suspicious areas, link up sorting or alarm, and generate detection reports and statistical data.

2. A device for simultaneous detection of metal surface contour and oxidation defects implemented by the detection method as described in claim 1, comprising a detection device, characterized in that: The detection device includes a fixed base (1), a fixed box (2) is fixed on the top of the fixed base (1), a limiting component (5) is movably installed on one side wall of the fixed box (2), the limiting component (5) includes a mounting base (24), an opening (25) is opened on the mounting base (24), a limiting plate (26) is movably installed inside the opening (25), a storage groove is opened on the side of the fixed box (2), the limiting plate (26) is movably installed inside the storage groove, a protrusion (27) is welded to one end of the limiting plate (26), a groove is opened on the inner wall of the storage groove, and the protrusion (27) is movably installed inside the groove.

3. The device for simultaneous detection of metal surface contour and oxidation defects according to claim 2, characterized in that: A servo motor (29) is fixedly mounted on the top of the mounting base (24), and a rotating column (30) is rotatably mounted on the bottom of the mounting base (24). One end of the rotating column (30) is mounted on the servo motor (29) through an output shaft. A fixing ring (31) is welded on the rotating column (30), and a ring seat (33) is rotatably mounted on the bottom of the fixing ring (31). A fixing bolt (32) is rotatably mounted between the ring seat (33) and the fixing ring (31).

4. The device for simultaneous detection of metal surface contour and oxidation defects according to claim 3, characterized in that: A connecting rod (34) is welded to the side wall of the ring seat (33). A camera (35) is fixed to one end of the connecting rod (34). A ring groove (36) is opened on the rotating column (30). A workpiece (45) is movably installed inside the ring groove (36). A fixing hole (37) is opened on the inner wall of the mounting seat (24). A fixing tube (38) is rotatably installed inside the fixing hole (37). The fixing tube (38) is welded and fixed to the limiting plate (26). A fixing column (39) is rotatably installed inside the fixing tube (38). A torsion spring (40) is fixedly installed between the fixing column (39) and the fixing tube (38). One end of the fixing column (39) is fixed inside the fixing hole (37).

5. The device for simultaneous detection of metal surface contour and oxidation defects according to claim 2, characterized in that: A drive motor (3) is fixedly installed on the side of the fixed base (1). An active roller and a driven roller are rotatably installed between the fixed bases (1). The active roller is installed on the drive motor (3). A conveyor belt (4) is movably installed between the active roller and the driven roller. A fan box (10) and an exhaust fan (6) are fixed on the side of the fixed box (2). A limit post (28) is fixed on the side of the mounting base (24).

6. The device for simultaneous detection of metal surface contour and oxidation defects according to claim 5, characterized in that: The bottom of the exhaust fan (6) is fixed with a collection box (7), the side of the collection box (7) has an exhaust hole (8), the inside of the collection box (7) is fixed with a dust collection bag, the dust collection bag is installed inside the collection box (7) by a limiting bolt, and the side of the fixed seat (1) is fixed with a displacement mechanism (9).

7. The device for simultaneous detection of metal surface contour and oxidation defects according to claim 2, characterized in that: The inner wall of the fixed box (2) has a fixed groove (11). A support assembly (12) is movably installed inside the fixed groove (11). The support assembly (12) includes a support base (13) and a movable base (16). The movable base (16) is movably installed at the bottom of the support base (13). A limit seat (14) is movably installed on the side of the support base (13). A supplementary light (15) is fixed on the side of the limit seat (14). A reset mechanism (19) is fixed on the side of the movable base (16). One end of the reset mechanism (19) is fixed on the inner wall of the fixed groove (11).

8. The device for simultaneous detection of metal surface contour and oxidation defects according to claim 7, characterized in that: The limiting seat (14) has a slider (20) fixed on its side, and the support seat (13) has a groove (18) on its side. The groove (18) has a support mechanism (17) fixed inside it. One end of the support mechanism (17) is fixed on the slider (20), and the slider (20) is movably installed inside the groove (18).

9. The device for simultaneous detection of metal surface contour and oxidation defects according to claim 7, characterized in that: Both the movable seat (16) and the limiting seat (14) have inclined surfaces on one side. A ball bearing (21) is rotatably installed on the side of the movable seat (16). An installation groove (22) is opened on the side of the movable seat (16). A roller (23) is rotatably installed inside the installation groove (22).

10. The device for simultaneous detection of metal surface contour and oxidation defects according to claim 5, characterized in that: The top of the fixed box (2) is fixed with a motor base (44), and a ring pipe (41) is fixed on the side of the motor base (44). An opening (43) is opened on the side of the ring pipe (41). An air inlet pipe (42) is fixed on the side wall of the ring pipe (41). An exhaust pump is fixed inside the fan box (10). One end of the air inlet pipe (42) is fixed on the exhaust pump. A blower hole is opened between the bottom of the ring pipe (41) and the fixed box (2).

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