Surface defect detection equipment for machined finished product

Abstract

The invention relates to the technical field of defect detection, and discloses machined finished product surface defect detection equipment which comprises a detection table and a mounting seat fixedly mounted on the detection table, and a positioning sleeve is fixed to the outer wall of the mounting seat; the detection core rod is mounted in the positioning sleeve, and a detection head for defect detection is mounted at the end part of the detection core rod; the butt joint seat is fixedly installed at the end of the detection core rod, the outer wall of the butt joint seat is fixedly connected with a limiting protrusion, a spiral groove used for driving the detection core rod to rotate is jointly formed in the installation seat and the positioning sleeve, and the limiting protrusion is arranged in the spiral groove in a sliding mode. Through the arrangement of the spiral groove, the detection head on the detection core rod gradually goes deep into the interior of the tubular workpiece, and the detection core rod drives the detection head to rotate, so that the detection head moves forwards to detect the inner surface of the tubular workpiece, and the detection head rotates to realize the whole detection of the inner surface of the tubular workpiece.

Description

Technical Field

[0001] This invention relates to the field of defect detection technology, specifically to a surface defect detection device for machined finished products. Background Technology

[0002] In the machining process of some tubular products with high pressure resistance, defect detection equipment is used to ensure the quality of the processed parts. Defect detection equipment is a crucial part of modern industrial automation. It uses advanced sensors and algorithms to automatically identify surface defects, dimensional deviations or functional defects of products.

[0003] During the inspection of tubular workpieces, due to the relatively narrow and long inner surface of the workpiece, traditional inspection equipment is unable to deeply penetrate the inner surface of the workpiece and conduct a comprehensive inspection. This can easily lead to poor detection results for defects on the inner surface of the workpiece, resulting in missed detections and affecting the service life of the workpiece.

[0004] In response to the existing problems, there is an urgent need to innovate based on the existing defect detection methods. Summary of the Invention

[0005] The purpose of this invention is to provide a surface defect detection device for machined finished products, in order to solve the problem mentioned in the background art that, in the process of inspecting tubular workpieces, due to the relatively narrow and long inner surface of the tubular workpiece, traditional detection equipment is difficult to deeply penetrate the inside of the tubular workpiece and conduct a comprehensive inspection of the inner surface of the tubular workpiece, which easily leads to poor detection effect of inner surface defects of the tubular workpiece, and there are cases of missed detection, which in turn affects the service life of the workpiece.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a surface defect detection device for machined finished products, comprising a detection table and a mounting base fixedly installed on the detection table, wherein a positioning sleeve is fixed to the outer wall of the mounting base; Also includes: A detection core rod is installed inside the positioning sleeve, and a detection head for defect detection is installed at the end of the detection core rod; A docking seat is fixedly installed at the end of the detection core rod. A limiting protrusion is fixedly connected to the outer wall of the docking seat. The mounting seat and the positioning sleeve are both provided with a spiral groove for driving the detection core rod to rotate. The limiting protrusion is slidably disposed inside the spiral groove. A docking groove is formed inside the docking seat, and a first hydraulic rod is installed inside the docking groove.

[0007] As an optional solution of the surface defect detection equipment for machined finished products according to the present invention, wherein: the mounting base has an internal mounting groove, and the first hydraulic rod is fixedly installed inside the mounting groove.

[0008] As an optional solution of the surface defect detection equipment for machined finished products according to the present invention, wherein: a ball is embedded in the outer wall of the first hydraulic rod, the ball is set at an equal angle, and the outer surface of the ball is in contact with the inner surface of the mating groove.

[0009] As an optional solution of the surface defect detection equipment for machined finished products according to the present invention, the detection head is symmetrically arranged in two places about the central axis of the detection core rod, the outer wall of the detection core rod is provided with a rotating groove, a positioning seat is movably installed inside the rotating groove, and a positioning core rod is installed inside the positioning seat to keep the detection core rod in a centered position.

[0010] As an optional solution of the surface defect detection equipment for machined finished products described in this invention, the positioning seat has a cavity inside for the positioning core rod to slide up and down, and a telescopic spring is provided between the positioning core rod and the cavity.

[0011] As an optional solution of the surface defect detection equipment for machined finished products according to the present invention, wherein: one end of a swing arm is rotatably connected to the outer wall of the positioning seat, the other end of the swing arm is rotatably connected to a sliding block, and a sliding groove for sliding of the sliding block is provided on the outer wall of the detection core rod.

[0012] As an optional embodiment of the surface defect detection equipment for machined finished products described in this invention, wherein: a sliding rod is fixedly connected to the inner wall of the sliding groove, a sliding block is sleeved on the outside of the sliding rod, and a spring for elastic connection is installed between the sliding block and the sliding groove.

[0013] As an optional embodiment of the surface defect detection equipment for machined finished products described in this invention, the sliding block, swing arm, and positioning seat are all symmetrically arranged about the central axis of the detection core rod, and the connecting spring is sleeved on the outside of the sliding rod.

[0014] As an optional embodiment of the surface defect detection equipment for machined finished products described in this invention, the outer wall of the detection table is fixedly equipped with a slide rail, a threaded rod is movably installed inside the slide rail, a drive motor is installed at the end of the threaded rod, and a threaded slider is threadedly connected to the outside of the threaded rod.

[0015] As an optional embodiment of the surface defect detection equipment for machined finished products described in this invention, the outer wall of the threaded slider is fixedly connected to a second hydraulic rod, the end of the second hydraulic rod is fixedly connected to a clamping seat, the clamping seat is C-shaped, the internal thread of the clamping seat is connected to an adjusting rod, the end of the adjusting rod is movably connected to an adjusting block, and both the adjusting block and the inner wall of the clamping seat are provided with a buffer layer for protecting the test piece.

[0016] The present invention has the following beneficial effects: 1. This surface defect detection equipment for machined finished products utilizes a spiral groove to allow the detection head on the detection core rod to gradually penetrate into the tubular workpiece. Simultaneously, the detection core rod drives the detection head to rotate, thereby using the forward movement of the detection head to detect the inner surface of the tubular workpiece. The rotation of the detection head enables the complete detection of the inner surface of the tubular workpiece, thus improving the detection effect of the inner surface of the tubular workpiece and effectively avoiding missed detections.

[0017] 2. This surface defect detection equipment for machined finished products utilizes a positioning seat on the detection core rod to support the end of the detection core rod. As the detection core rod drives the detection head to gradually penetrate into the tubular workpiece, it keeps the detection core rod as close as possible to the central axis of the tubular workpiece. This effectively avoids the detection core rod bending due to gravity during the penetration process, which would affect subsequent detection.

[0018] 3. This surface defect detection equipment for machined finished products utilizes a sliding block on the detection core rod. During the initial insertion of the positioning seat into the tubular workpiece, the positioning seat can swing at different amplitudes according to the inner diameter of the tubular workpiece. This allows the positioning seat to adjust the appropriate tilt angle according to tubular workpieces of different sizes, thereby achieving stable support for the detection core rod and improving its applicability. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the connection structure between the detection core rod and the docking seat of the present invention.

[0021] Figure 3 This is a schematic cross-sectional view of the positioning sleeve structure of the present invention.

[0022] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0023] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B.

[0024] Figure 6 This is a schematic diagram of the slide rail structure of the present invention.

[0025] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C.

[0026] In the diagram: 1. Testing table; 2. Mounting seat; 3. Positioning sleeve; 4. Testing core rod; 5. Testing head; 6. Docking seat; 7. Limiting protrusion; 8. Spiral groove; 9. Docking groove; 10. First hydraulic rod; 11. Ball bearing; 12. Mounting groove; 13. Rotating groove; 14. Positioning seat; 15. Positioning core rod; 16. Swing arm; 17. Sliding block; 18. Sliding groove; 19. Slide rod; 20. Connecting spring; 21. Cavity; 22. Telescopic spring; 23. Slide rail; 24. Drive motor; 25. Threaded rod; 26. Threaded slider; 27. Second hydraulic rod; 28. Clamping seat; 29. ​​Adjusting rod; 30. Adjusting block; 31. Buffer layer. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1, please refer to Figures 1 to 7 A surface defect detection device for machined finished products includes a detection table 1 and a mounting base 2 fixedly installed on the detection table 1, wherein a positioning sleeve 3 is fixed to the outer wall of the mounting base 2; and further includes: The detection core rod 4 is installed inside the positioning sleeve 3, and the detection head 5 for defect detection is installed at the end of the detection core rod 4; The docking seat 6 is fixedly installed at the end of the detection core rod 4. The outer wall of the docking seat 6 is fixedly connected with the limiting protrusion 7. The mounting seat 2 and the positioning sleeve 3 are both provided with a spiral groove 8 for driving the detection core rod 4 to rotate. The limiting protrusion 7 is slidably arranged inside the spiral groove 8. The mating groove 9 is formed inside the mating seat 6. The first hydraulic rod 10 is installed inside the mating groove 9. The mounting seat 2 has a mounting groove 12 inside. The first hydraulic rod 10 is fixedly installed inside the mounting groove 12. The outer wall of the first hydraulic rod 10 is embedded with a ball bearing 11. The ball bearing 11 is set at equal angles. The outer surface of the ball bearing 11 is in contact with the inner surface of the mating groove 9. First, the end of the detection core rod 4 is inserted into the interior of the tubular workpiece. The detection head 5 installed on the detection core rod 4 is used to detect defects on the inner surface of the tubular workpiece. During the detection process, the tubular workpiece is kept stationary. Then, the first hydraulic rod 10 in the mounting groove 12 inside the mounting base 2 is controlled to move. The first hydraulic rod 10 is connected to the docking seat 6, which in turn drives the docking seat 6 and the detection core rod 4 fixed on the outer wall of the docking seat 6 to move synchronously. During the sliding process of the detection core rod 4 inside the positioning sleeve 3, the detection head 5 installed on the detection core rod 4 will gradually penetrate into the interior of the tubular workpiece. The detection head 5 is used to detect defects on the inner surface of the tubular workpiece. It should be noted that the detection head 5 is existing technology, and those skilled in the art can select it according to actual needs. To improve the detection effect of defects on the inner surface of tubular workpieces, a limiting protrusion 7 is fixed on the outer wall of the docking seat 6. The mounting seat 2 and the positioning sleeve 3 are both provided with a spiral groove 8, and the limiting protrusion 7 is embedded in the spiral groove 8. When the docking seat 6 drives the detection head 5 on the detection core rod 4 to penetrate into the pipe, the limiting protrusion 7 on the docking seat 6 will slide inside the spiral groove 8 and be restricted by the spiral groove 8. This allows the docking seat 6 to drive the detection core rod 4 to move forward and rotate automatically. As the detection head 5 on the detection core rod 4 gradually penetrates into the tubular workpiece, it will rotate. There are two symmetrically arranged detection heads 5. The rotation of the detection head 5 is used to perform comprehensive defect detection on the inner surface of the tubular workpiece, effectively avoiding the situation of missed detection, thereby improving the defect detection effect. The first hydraulic rod 10 is connected to the docking seat 6 through the docking groove 9. When the docking seat 6 rotates, the first hydraulic rod 10 remains stationary, allowing the docking seat 6 to rotate normally. Furthermore, because the outer surface of the first hydraulic rod 10 is provided with several balls 11 at equal angles, and the balls 11 fit against the inner surface of the docking groove 9, the arrangement of several balls 11 reduces the rotational friction of the docking seat 6, making the rotation of the docking seat 6 smoother.

[0029] Example 2 is an improvement upon Example 1. It avoids the situation where the elongated tubular workpiece causes the detection core rod 4 to bend due to gravity, affecting subsequent normal testing. For details, please refer to [link to example]. Figures 1 to 7 Two detection heads 5 are symmetrically arranged about the central axis of the detection core rod 4. The outer wall of the detection core rod 4 is provided with a rotating groove 13. A positioning seat 14 is movably installed inside the rotating groove 13. A positioning core rod 15 is installed inside the positioning seat 14 to keep the detection core rod 4 in a centered position. A cavity 21 is provided inside the positioning seat 14 for the positioning core rod 15 to slide up and down. A telescopic spring 22 is provided between the positioning core rod 15 and the cavity 21. One end of a swing arm 16 is rotatably connected to the outer wall of the positioning seat 14, and the other end of the swing arm 16 is rotatably connected to a sliding block 17. A sliding groove 18 for sliding the sliding block 17 is opened on the outer wall of the detection core rod 4. A sliding rod 19 is fixedly connected to the inner wall of the sliding groove 18. The sliding block 17 is sleeved on the outside of the sliding rod 19. A spring 20 for elastic connection is installed between the sliding block 17 and the sliding groove 18. The sliding block 17, the swing arm 16 and the positioning seat 14 are all symmetrically arranged about the central axis of the detection core rod 4. The spring 20 is sleeved on the outside of the sliding rod 19. The detection core rod 4 is symmetrically provided with positioning seats 14 on its exterior, and the positioning seats 14 have cavities 21 inside to restrict the sliding of the positioning core rod 15. The cavity 21 makes the sliding of the positioning core rod 15 more stable. Simultaneously, a telescopic spring 22 is fixed to the end of the positioning core rod 15. When the detection core rod 4 is inserted into the tubular workpiece, the telescopic length of the positioning core rod 15 is adjusted using the positioning core rod 15 and the telescopic spring 22, allowing the positioning core rod 15 to be properly inserted into the tubular workpiece, thereby utilizing… The positioning core rod 15 and the positioning seat 14 are designed to support the end of the detection core rod 4, allowing it to remain as close as possible to the central axis of the tubular workpiece as it gradually penetrates deeper into the workpiece. This prevents the end of the detection core rod 4 from bending due to gravity as it penetrates deeper into the workpiece, which could cause the detection head 5 on the detection core rod 4 to become misaligned and affect the subsequent detection results. At the same time, the positioning core rod 4 is also protected from damage caused by excessive bending of the detection core rod 4. To allow the positioning seat 14 to smoothly enter the interior of the tubular workpiece, a rotating groove 13 is provided on the surface of the detection core rod 4. The positioning seat 14 is rotatably positioned inside the positioning seat 14. When the positioning seat 14 is blocked by the outer wall of the tubular workpiece, it will rotate inside the rotating groove 13 and tilt. During the tilting process, the swing arm 16 will push the sliding block 17, causing the sliding block 17 to slide inside the sliding groove 18. A sliding rod 19 is embedded inside the sliding block 17, allowing the sliding block 17 to slide outside the sliding rod 19 simultaneously. The setting of 19 makes the sliding block 17 slide more stably and simultaneously compresses the connecting spring 20. By setting the positioning seat 14 to be obstructed and tilted, the positioning seat 14 can automatically slide into the interior of the tubular workpiece without manual adjustment. Due to the linkage between the positioning seat 14 and the sliding block 17, by changing the tilt degree of the positioning seat 14, the positioning seat 14 can automatically penetrate into the interior of tubular workpieces with different inner diameters and provide support for the detection core rod 4. At the same time, the telescopic setting of the positioning core rod 15 further improves the adaptability to tubular workpieces with different inner diameters.

[0030] Example 3 is an improvement upon Example 1, achieving centered positioning of tubular workpieces of different sizes. For details, please refer to [link / reference]. Figures 1 to 7 A slide rail 23 is fixedly installed on the outer wall of the testing table 1. A threaded rod 25 is movably installed inside the slide rail 23. A drive motor 24 is installed at the end of the threaded rod 25. A threaded slider 26 is threadedly connected to the outside of the threaded rod 25. A second hydraulic rod 27 is fixedly connected to the outer wall of the threaded slider 26. A clamping seat 28 is fixedly connected to the end of the second hydraulic rod 27. The clamping seat 28 is C-shaped. An adjusting rod 29 is threadedly connected inside the clamping seat 28. An adjusting block 30 is movably connected to the end of the adjusting rod 29. A buffer layer 31 for protecting the test piece is provided on the inner wall of both the adjusting block 30 and the clamping seat 28. By placing the tubular workpiece inside the clamping seat 28, and then manually rotating the adjusting rod 29 provided on the clamping seat 28, the height of the adjusting block 30 can be adjusted by rotating the adjusting rod 29. The adjusting rod 29 is threadedly connected to the clamping seat 28, and the end of the adjusting rod 29 is rotatably connected to the adjusting block 30. This allows for the clamping and positioning of tubular workpieces of different sizes. Both the adjusting block 30 and the inner wall of the clamping seat 28 are provided with a buffer layer 31, which is made of rubber, to prevent wear on the tubular workpiece during the clamping process. Subsequently, the height of the clamping seat 28 is adjusted by controlling the movement of the second hydraulic rod 27, so that the center of the clamping seat 28 is located at the central axis of the detection core rod 4, which facilitates the subsequent insertion of the detection core rod 4 into the tubular workpiece for defect detection. Then, the drive motor 24 is controlled to drive the threaded rod 25 to rotate inside the slide rail 23. The threaded rod 25 and the threaded slider 26 are threadedly connected, which drives the threaded slider 26 and the clamping seat 28 above to move synchronously, so that the tubular workpiece gradually approaches the end of the detection core rod 4, and finally the detection head 5 on the detection core rod 4 is inserted into the interior of the tubular workpiece and stops moving. Subsequently, by controlling the detection core rod 4 to gradually penetrate into the interior of the tubular workpiece, the defect detection of the inner surface of the tubular workpiece is realized.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A surface defect detection device for machined finished products, comprising a detection table (1) and a mounting base (2) fixedly installed on the detection table (1), wherein a positioning sleeve (3) is fixed to the outer wall of the mounting base (2); Its features are, Also includes: The detection core rod (4) is installed inside the positioning sleeve (3), and a detection head (5) for defect detection is installed at the end of the detection core rod (4). The docking seat (6) is fixedly installed at the end of the detection core rod (4). The outer wall of the docking seat (6) is fixedly connected to the limiting protrusion (7). The mounting seat (2) and the positioning sleeve (3) are jointly provided with a spiral groove (8) for driving the detection core rod (4) to rotate. The limiting protrusion (7) is slidably disposed inside the spiral groove (8). A docking groove (9) is formed inside the docking seat (6), and a first hydraulic rod (10) is installed inside the docking groove (9).

2. The surface defect detection equipment for machined finished products according to claim 1, characterized in that: The mounting base (2) has an internal mounting groove (12), and the first hydraulic rod (10) is fixedly installed inside the mounting groove (12).

3. The surface defect detection equipment for machined finished products according to claim 1, characterized in that: The outer wall of the first hydraulic rod (10) is embedded with a ball (11), the ball (11) is set at equal angles, and the outer surface of the ball (11) is in contact with the inner surface of the mating groove (9).

4. The surface defect detection equipment for machined finished products according to claim 1, characterized in that: Two detection heads (5) are symmetrically arranged about the central axis of the detection core rod (4). The outer wall of the detection core rod (4) is provided with a rotating groove (13). A positioning seat (14) is movably installed inside the rotating groove (13). A positioning core rod (15) is installed inside the positioning seat (14) to keep the detection core rod (4) in the center.

5. The surface defect detection equipment for machined finished products according to claim 4, characterized in that: The positioning seat (14) has a cavity (21) inside for the positioning core rod (15) to slide up and down, and a telescopic spring (22) is provided between the positioning core rod (15) and the cavity (21).

6. The surface defect detection equipment for machined finished products according to claim 5, characterized in that: The outer wall of the positioning seat (14) is rotatably connected to one end of the swing arm (16), and the other end of the swing arm (16) is rotatably connected to the sliding block (17). The outer wall of the detection core rod (4) is provided with a sliding groove (18) for the sliding block (17) to slide.

7. The surface defect detection equipment for machined finished products according to claim 6, characterized in that: The inner wall of the sliding groove (18) is fixedly connected to a sliding rod (19), and the sliding block (17) is sleeved on the outside of the sliding rod (19). A spring (20) for elastic connection is installed between the sliding block (17) and the sliding groove (18).

8. The surface defect detection equipment for machined finished products according to claim 7, characterized in that: The sliding block (17), swing arm (16) and positioning seat (14) are all symmetrically arranged about the central axis of the detection core rod (4), and the connecting spring (20) is sleeved on the outside of the sliding rod (19).

9. The surface defect detection equipment for machined finished products according to claim 1, characterized in that: The outer wall of the testing platform (1) is fixedly equipped with a slide rail (23), and a threaded rod (25) is movably installed inside the slide rail (23). A drive motor (24) is installed at the end of the threaded rod (25), and a threaded slider (26) is threadedly connected to the outside of the threaded rod (25).

10. The surface defect detection equipment for machined finished products according to claim 9, characterized in that: The outer wall of the threaded slider (26) is fixedly connected to a second hydraulic rod (27), and the end of the second hydraulic rod (27) is fixedly connected to a clamping seat (28). The clamping seat (28) is C-shaped, and the inside of the clamping seat (28) is threadedly connected to an adjusting rod (29). The end of the adjusting rod (29) is movably connected to an adjusting block (30). Both the adjusting block (30) and the inner wall of the clamping seat (28) are provided with a buffer layer (31) for protecting the test piece.

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