A machine vision-based online detection system for stamping part size precision

Abstract

The application discloses a kind of stamping part size precision on-line detection system based on machine vision, it is related to part detection equipment technical field.The present application includes detection platform, detection platform top is provided with detection mechanism, the detection mechanism includes rotation column being movably connected in the inside of detection platform, disc being movably connected on the surface of rotation column.The present application is by being provided with clamping mechanism and turnover mechanism, using first convex ring drive sliding ball to make clamping plate automatically clamp stamping part, cooperate second convex ring to push gear plate and drive gear, make support shaft drive rotary plate overturn, part is overturned from the lower side of first vision probe to the lower side of second vision probe, realize the continuous automatic detection of positive and negative two sides, effectively improve the detection efficiency and accuracy, simultaneously, by being provided with discharging mechanism, using hydraulic rod to control sealing plate inclination, cooperate with scraper to direct qualified parts and unqualified parts to collection shell and waste shell respectively, realize automatic classification and discharging.

Description

Technical Field

[0001] This invention belongs to the technical field of parts inspection equipment, and in particular relates to an online inspection system for the dimensional accuracy of stamped parts based on machine vision. Background Technology

[0002] Stamped parts (or simply stamped components) are metal or non-metal parts manufactured through a stamping process. This process uses a press and dies to apply external force to sheet metal, strip, etc., causing it to separate or undergo plastic deformation, thereby obtaining the desired shape and size. Common processing steps include blanking, bending, and deep drawing. During the processing of stamped parts, non-contact quality inspection methods using machine vision technology are typically employed to automate the detection of surface defects and dimensional measurements of the metal parts produced during the stamping process.

[0003] A Chinese patent application (or patent) with publication number CN208944863U discloses an online visual inspection device for defects in stamped parts, including a frame, a translation mechanism, a visual inspection mechanism, a carrying mechanism, a conveying mechanism, and a positioning mechanism; the translation mechanism includes a guide rail and a slider, and is mounted on the top of the frame; the visual inspection mechanism is mounted on the slider and can reciprocate along the guide rail; the carrying mechanism is located in the middle of the frame, below the visual inspection mechanism; the conveying mechanism is mounted on the lower part of the frame, below the carrying mechanism; the positioning mechanism includes a pair of rolling positioning pins.

[0004] However, the above-mentioned device still has the following problems during implementation: When inspecting parts, the parts need to be transported to the visual inspection mechanism via a conveyor. However, the visual inspection mechanism can only inspect one side of the part. When the part needs to be inspected on both sides, the staff must first inspect the front side and then manually flip the part over and put it back into the conveyor. This is not only cumbersome, but also prone to placing the part in the wrong direction during the flipping process, resulting in a chaotic inspection sequence and incorrect data correspondence, requiring all parts to be reworked.

[0005] A Chinese patent application (or patent) with publication number CN217095092U discloses a testing device for stamping dies of automotive parts, including a base and a computer desk. The computer desk is located on one side of the base. Symmetrically distributed three-axis main legs are installed on the top of the base, and an X-axis crossbeam is provided on the top of the two three-axis main legs. A Z-axis vertical cover is movably arranged on the outer side of the X-axis crossbeam. A grating ruler is installed at the bottom of the Z-axis vertical cover, and a probe is installed at the bottom of the grating ruler. A reinforcement component is provided on the grating ruler.

[0006] However, the above-mentioned device still has the following problems during implementation: After the parts are inspected, they are sent out together by the conveyor mechanism. The lack of automatic classification and directional material discharge of defective and qualified products results in the mixed output of the two types of parts. This not only increases the workload of subsequent manual sorting, but also makes it easy to affect product quality traceability and batch management due to misjudgment or missed inspection.

[0007] To address these issues, we provide a machine vision-based online inspection system for the dimensional accuracy of stamped parts. Summary of the Invention

[0008] The purpose of this invention is to provide an online inspection system for the dimensional accuracy of stamped parts based on machine vision. By combining the clamping mechanism and the flipping mechanism, this invention solves the problem in existing parts inspection equipment where parts are transported to the visual inspection mechanism via a conveying mechanism, but the visual inspection mechanism can only inspect one side of the parts, resulting in low inspection efficiency.

[0009] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0010] This invention relates to an online inspection system for the dimensional accuracy of stamped parts based on machine vision. The system includes an inspection platform with an inspection mechanism on its top. The inspection mechanism comprises a rotating column movably connected inside the inspection platform, a disk movably connected to the surface of the rotating column, and a first and second vision probes mounted on the top of the disk. The inspection mechanism inspects the stamped parts. A clamping mechanism is also provided on the top of the inspection platform. This clamping mechanism includes a support shaft movably connected inside the rotating column, a rotating plate mounted on one side of the support shaft, and a clamping plate mounted on top of the rotating plate. The disc has a fixed plate, a crossbar slidably connected inside the rotating plate, a slider mounted on one side of the crossbar, a first convex ring mounted on the top of the disc, and a clamping plate slidably connected to the top of the rotating plate. The clamping mechanism clamps the stamped parts. The top of the disc is provided with a flipping mechanism, which includes a drive gear mounted on the surface of the support shaft, a toothed plate meshing with one side of the drive gear, a pulley mounted on the top of the toothed plate, a top plate slidably connected to the top of the pulley, a second convex ring mounted on the bottom of the top plate, and a drive assembly located at the bottom of the disc. The flipping mechanism performs flipping detection on the stamped parts.

[0011] The present invention is further configured such that the driving component includes a driving motor mounted on the top of the detection platform, a first gear mounted on the output end of the driving motor, and a second gear mounted on the surface of the rotating column.

[0012] The present invention is further configured such that one side of the first gear meshes with the second gear, and one side of the sliding ball is slidably connected to the first convex ring.

[0013] The present invention is further configured such that a discharge mechanism is provided on one side of the disc, the discharge mechanism including a discharge groove opened on the top of the disc, a sealing plate movably connected inside the discharge groove, and a hydraulic rod movably connected to the bottom of the sealing plate.

[0014] The invention is further configured such that a discharge pipe is connected to the bottom of the discharge trough, a scraper is fixedly connected to the surface of the rotating column, and the other end of the hydraulic rod is movably connected to the inner wall of the discharge pipe.

[0015] The invention is further configured such that a vertical rod is installed inside the rotating column, a movable plate and a first spring are sleeved on the surface of the vertical rod, and one side of the movable plate is fixedly connected to the toothed plate.

[0016] The invention is further configured such that a sliding block is fixedly connected to the surface of the crossbar, the top of the sliding block is fixedly connected to the clamping plate, and a second spring is sleeved on the surface of the crossbar.

[0017] The invention is further configured such that a crossbeam is fixedly connected to the surface of the top plate, and both sides of the crossbeam are fixedly connected to the disc.

[0018] The present invention is further configured such that a first bracket is fixedly connected to the surface of the first visual probe, and a second bracket is fixedly connected to the surface of the second visual probe.

[0019] The present invention is further configured such that a waste shell is provided at the bottom of the discharge pipe, a discharge trough is provided inside the disc, and a collection shell is provided at the bottom of the discharge trough.

[0020] The present invention has the following beneficial effects: By setting up a clamping mechanism and a flipping mechanism, the present invention uses a first convex ring to drive a sliding ball to automatically clamp the stamped parts with a clamping plate. In conjunction with a second convex ring, it pushes a toothed plate and a drive gear, causing the support shaft to drive a rotating plate to flip, flipping the parts from under the first vision probe to under the second vision probe. This achieves continuous automatic detection of both sides, avoiding the sequence disorder and data errors caused by manual flipping, and effectively improving detection efficiency and accuracy. At the same time, by setting up a discharge mechanism, the present invention uses a hydraulic rod to control the tilt of the sealing plate, and in conjunction with a scraper, guides qualified parts and unqualified parts to the collection shell and waste shell respectively, achieving automatic classification and discharge, and ensuring the reliability of product quality traceability.

[0021] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0023] Figure 1This is a 3D view of an online inspection system for the dimensional accuracy of stamped parts based on machine vision.

[0024] Figure 2 This is a schematic diagram of the surface structure of a disc in an online inspection system for the dimensional accuracy of stamped parts based on machine vision.

[0025] Figure 3 This is a bottom view of the top plate and the second convex ring in a machine vision-based online inspection system for the dimensional accuracy of stamped parts.

[0026] Figure 4 This is a cross-sectional view of a rotating plate in an online inspection system for the dimensional accuracy of stamped parts based on machine vision.

[0027] Figure 5 This is a cross-sectional view of a rotating column in a machine vision-based online inspection system for the dimensional accuracy of stamped parts.

[0028] Figure 6 This is a cross-sectional view of the discharge tube in an online inspection system for the dimensional accuracy of stamped parts based on machine vision.

[0029] Figure 7 This is a schematic diagram of the clamping of stamped parts in an online inspection system for the dimensional accuracy of stamped parts based on machine vision.

[0030] Figure 8 This is a schematic diagram of the rotation of a stamped part in an online inspection system for the dimensional accuracy of stamped parts based on machine vision.

[0031] Figure 9 This is a schematic diagram of the flipping of a stamped part in an online inspection system for the dimensional accuracy of stamped parts based on machine vision.

[0032] In the attached diagram: 1. Detection platform; 2. Detection mechanism; 21. Rotating column; 22. Disc; 23. First vision probe; 24. Second vision probe; 3. Clamping mechanism; 31. Support shaft; 32. Rotating plate; 33. Fixed plate; 34. Crossbar; 35. Sliding ball; 36. First convex ring; 37. Clamping plate; 4. Tilting mechanism; 41. Drive gear; 42. Toothed plate; 43. Pulley; 44. Top plate; 45. Second convex ring; 46. 461. Drive assembly; 462. Drive motor; 463. First gear; 464. Second gear; 5. Discharge mechanism; 51. Discharge chute; 52. Sealing plate; 53. Hydraulic rod; 54. Discharge pipe; 55. Scraper; 6. Vertical rod; 7. Moving plate; 8. First spring; 9. Sliding block; 10. Second spring; 11. Horizontal frame; 12. First support; 13. Second support; 14. Waste shell; 15. Discharge chute; 16. Collection shell. Detailed Implementation

[0033] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] Please refer to Example 1 Figures 1-9 This invention relates to an online inspection system for the dimensional accuracy of stamped parts based on machine vision. It includes an inspection platform 1, with an inspection mechanism 2 mounted on top of the platform 1. The inspection mechanism 2 includes a rotating column 21 movably connected inside the platform 1, a disk 22 movably connected to the surface of the rotating column 21, and a first vision probe 23 and a second vision probe 24 mounted on top of the disk 22. The inspection mechanism 2 is used to inspect the stamped parts. A clamping mechanism 3 is also mounted on top of the platform 1. The clamping mechanism 3 includes a support shaft 31 movably connected inside the rotating column 21, a rotating plate 32 mounted on one side of the support shaft 31, and a fixed plate 33 mounted on top of the rotating plate 32. A crossbar 34 is connected inside the rotating plate 32, a slider 35 is installed on one side of the crossbar 34, a first convex ring 36 is installed on the top of the disc 22, and a clamping plate 37 is slidably connected to the top of the rotating plate 32. The clamping mechanism 3 clamps the stamped parts. A flipping mechanism 4 is provided on the top of the disc 22. The flipping mechanism 4 includes a drive gear 41 installed on the surface of the support shaft 31, a toothed plate 42 meshing with one side of the drive gear 41, a pulley 43 installed on the top of the toothed plate 42, a top plate 44 slidably connected to the top of the pulley 43, a second convex ring 45 installed at the bottom of the top plate 44, and a drive assembly 46 provided at the bottom of the disc 22. The flipping mechanism 4 flips and detects the stamped parts.

[0035] Specifically: The rotating column 21 is movably installed inside the inspection platform 1, transmitting power to the disc 22 and causing it to rotate synchronously, realizing the sequential switching of workstations. The bottom of the disc 22 is fixedly connected to the inspection platform 1 through a connecting frame. The first vision probe 23 is aligned with the initial inspection station, acquiring images and measuring key dimensions of the upper surface of the stamped part from directly above. The second vision probe 24 is aligned with the flipped inspection station, acquiring images and measuring dimensions of the lower surface of the stamped part from directly above. The two work together to complete double-sided inspection without manual intervention for flipping. The support shaft 31 is movably connected inside the rotating column 21 and maintains independent rotational freedom with the rotating column 21. The rotating plate 32 flips with the rotation of the support shaft 31, used to support the stamped part and change its orientation. The fixed plate 33 is fixed to one side of the upper surface of the rotating plate 32 as a positioning reference surface. One edge of the stamped part is tightly attached to the fixed plate 33 for initial positioning. The crossbar 34 passes through the interior of the rotating plate 32 and can slide back and forth along its length. The outer end of the crossbar 34 is fixed with a slider 35. The ball 35 forms a rolling contact with the first convex ring 36 fixedly disposed on the top of the disk 22. The first convex ring 36 has an undulating profile along the circumferential direction. When the disk 22 rotates to a specific angle, the convex ring profile pushes the ball 35 to produce radial displacement. The ball 35 drives the crossbar 34 to move inward or outward. A sliding block 9 is fixedly connected to the middle of the crossbar 34. The sliding block 9 slides in cooperation with the inner wall of the rotating plate 32. A clamping plate 37 is fixedly connected to the top of the sliding block 9. The clamping plate 37 is located on the upper surface of the rotating plate 32 and can move together with the sliding block 9. The clamping plate 37 is pushed closer to the fixed plate 33 by the crossbar 34 to clamp the part. When the crossbar 34 retracts, the clamping plate 37 moves away from the fixed plate 33 to release the part. The crossbar 34 is fitted with a second spring 10. One end of the second spring 10 abuts against the sliding block 9 and the other end abuts against the inner wall of the rotating plate 32. When the convex ring pushes the slider 35 to move, the second spring 10 is compressed and stores elastic potential energy. When the slider 35 enters the concave area of ​​the first convex ring 36, it extends and pushes the sliding block 9 and the clamping plate 37 to reset, realizing the automatic clamping and releasing cycle.

[0036] Please refer to Example 2 Figures 1-9 Based on Embodiment 1, the drive assembly 46 includes a drive motor 461 mounted on the top of the detection platform 1, a first gear 462 mounted on the output end of the drive motor 461, and a second gear 463 mounted on the surface of the rotating column 21. One side of the first gear 462 meshes with the second gear 463. One side of the ball 35 is slidably connected to the first convex ring 36. A discharge mechanism 5 is provided on one side of the disc 22. The discharge mechanism 5 includes a discharge groove 51 opened on the top of the disc 22, a sealing plate 52 movably connected to the inside of the discharge groove 51, and a hydraulic rod 53 movably connected to the bottom of the sealing plate 52. A discharge pipe 54 is connected to the bottom of the discharge groove 51. A scraper 55 is fixedly connected to the surface of the rotating column 21. The other end of the hydraulic rod 53 is movably connected to the inner wall of the discharge pipe 54.

[0037] Specifically: the drive gear 41 is fixed to the surface of the support shaft 31. When the toothed plate 42 moves up and down, it drives the drive gear 41 to rotate forward or backward, thereby causing the rotating plate 32 to rotate 180 degrees through the support shaft 31. A pulley 43 is fixedly installed on the top of the toothed plate 42. The pulley 43 forms a rolling fit with the second convex ring 45 fixed on the bottom surface of the top plate 44. The second convex ring 45 also has a set undulating profile and its position remains fixed. When the disc 22 drives the toothed plate 42 and the pulley 43 to rotate around the center of the top plate 44, the protruding part of the second convex ring 45 pushes the pulley 43 to move the toothed plate 42 downward. The toothed plate 42 drives the drive gear 41 to rotate, realizing the rotation action of the rotating plate 32. Plate 44 is fixedly connected to disk 22 via crossbar 11 and remains stationary relative to disk 22. Both ends of crossbar 11 are fastened to top plate 44 and disk 22 respectively, ensuring that the relative position between second convex ring 45 and disk 22 remains unchanged. Vertical rod 6 is vertically installed inside rotating column 21. Moving plate 7 and first spring 8 are sleeved on vertical rod 6. One side of moving plate 7 is fixedly connected to toothed plate 42 and slides up and down with toothed plate 42. First spring 8 is located below moving plate 7. When toothed plate 42 moves down, first spring 8 is compressed. When pulley 43 disengages from the protruding part of second convex ring 45, first spring 8 pushes moving plate 7 and toothed plate 42 upward to reset, ensuring that toothed plate 42 returns to its initial position to prepare for the next flip.

[0038] Please refer to Example 3 Figures 1-9 Based on Embodiments 1 and 2, a vertical rod 6 is installed inside the rotating column 21. A movable plate 7 and a first spring 8 are sleeved on the surface of the vertical rod 6. One side of the movable plate 7 is fixedly connected to the toothed plate 42. A sliding block 9 is fixedly connected to the surface of the horizontal rod 34. The top of the sliding block 9 is fixedly connected to the clamping plate 37. A second spring 10 is sleeved on the surface of the horizontal rod 34. A horizontal frame 11 is fixedly connected to the surface of the top plate 44. Both sides of the horizontal frame 11 are fixedly connected to the disc 22. A first bracket 12 is fixedly connected to the surface of the first vision probe 23. A second bracket 13 is fixedly connected to the surface of the second vision probe 24. A waste shell 14 is provided at the bottom of the discharge pipe 54. A discharge trough 15 is opened inside the disc 22. A collection shell 16 is provided at the bottom of the discharge trough 15.

[0039] Specifically: The drive motor 461 in the drive assembly 46 is fixed to the top of the detection platform 1, and its output shaft is connected to the first gear 462. The first gear 462 meshes with the second gear 463 fixed to the surface of the rotating column 21, thereby controlling the switching sequence of each station. A discharge chute 51 is provided on one side of the disc 22, which runs through the upper and lower surfaces of the disc 22 and is used to discharge defective parts. A sealing plate 52 is hinged inside the discharge chute 51. Under normal conditions, the sealing plate 52 horizontally covers the discharge chute 51 to support the passage of parts. The bottom of the sealing plate 52 is hinged to one end of the hydraulic rod 53, and the other end of the hydraulic rod 53 is hinged to the inner wall of the discharge pipe 54. When the detection result is defective, the hydraulic rod 53 extends or shortens to... The sealing plate 52 is tilted to form a guiding slope so that the parts fall into the discharge trough 51. The bottom of the discharge trough 51 is connected to the discharge pipe 54. The discharge pipe 54 is fixed to the side of the rotating column 21 and rotates with the rotating column 21. Its lower outlet is aligned with the waste shell 14. Unqualified parts fall into the waste shell 14 along the discharge pipe 54 and are collected. The surface of the rotating column 21 is fixed with a scraper 55. When the scraper 55 rotates with the rotating column 21, it sweeps across the upper surface of the disc 22 and pushes the parts that have been inspected along the surface of the disc 22. When the parts are qualified, the scraper 55 pushes them into the discharge trough 15. The discharge trough 15 is another through opening on the disc 22. A collection shell 16 is set at the bottom of the discharge trough 15. Qualified parts fall into the collection shell 16 through the discharge trough 15 and are collected.

[0040] The working principle of this invention is as follows: The operator first places the stamped part to be inspected on top of the rotating plate 32, and makes one side of the stamped part abut against the fixed plate 33, such as... Figure 1 As shown, the drive motor 461 is then started by an external controller. The drive motor 461, in conjunction with the first gear 462, drives the second gear 463 to rotate. The second gear 463, in conjunction with the rotating column 21, drives the support shaft 31 and the rotating plate 32 to rotate. The rotating plate 32 drives the crossbar 34 and the slider 35 to rotate. When the slider 35 rotates, it contacts the first convex ring 36. The first convex ring 36 pushes the slider 35 to move. The slider 35 drives the crossbar 34 to move. The crossbar 34 pushes the sliding block 9 and the clamping plate 37 to move, thus clamping the stamped parts.

[0041] Then, continue controlling the drive motor 461 to drive the rotating plate 32 to continue rotating. The rotating plate 32 drives the clamped stamped part to rotate to the bottom of the first vision probe 23, as shown. Figure 7 As shown, the first vision probe 23 is then activated to take pictures and inspect the top of the stamped part.

[0042] After the surface inspection of the stamped part is completed, the drive motor 461 continues to drive the rotating column 21 to rotate. Simultaneously, the rotating column 21 drives the toothed plate 42 and pulley 43 to rotate. When the pulley 43 contacts the second convex ring 45, the position of the second convex ring 45 remains unchanged. The second convex ring 45 pushes the toothed plate 42 downwards, causing the toothed plate 42 to drive the drive gear 41 to rotate. The drive gear 41, in conjunction with the support shaft 31, drives the rotating plate 32 to rotate. At this time, the ball 35 remains in contact with the first convex ring 36 and will not release the fixation of the stamped part. After the rotating plate 32 rotates 180 degrees, it rotates to the bottom of the second vision probe 24. Then, the drive motor 461 continues to drive the rotating column 21 to rotate. After the rotating column 21 drives the ball 35 to rotate, the ball 35 rotates to the concave surface of the first convex ring 36, releasing the push on the ball 35. At this time, the second spring 10 resets the clamping plate 37, causing the bottom of the stamped part to face upwards and fall onto the top of the disc 22. Figure 9 As shown, the second vision probe 24 is then activated to photograph and inspect the reverse side of the stamped part, thereby improving the inspection efficiency of the stamped part.

[0043] When the first vision probe 23 and the second vision probe 24 detect that the appearance of the stamped part is normal and it is a qualified product, the hydraulic rod 53 does not work, and the position of the sealing plate 52 remains unchanged. While the rotating column 21 rotates, it can synchronously drive the scraper 55 to rotate. While the scraper 55 rotates, it pushes the stamped part from the discharge chute 15 into the collection shell 16 for collection. When the first vision probe 23 and the second vision probe 24 detect that the appearance of the stamped part is damaged and it is determined to be a non-qualified product, the hydraulic rod 53 is activated before the scraper 55 contacts the stamped part. The hydraulic rod 53 drives the sealing plate 52 to tilt. Then, under the push of the scraper 55, the stamped part falls into the waste shell 14 for collection, thus completing the inspection and classification storage of the stamped parts.

[0044] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A machine vision-based online inspection system for the dimensional accuracy of stamped parts, comprising an inspection platform (1), characterized in that: The top of the testing platform (1) is provided with a testing mechanism (2). The testing mechanism (2) includes a rotating column (21) movably connected to the inside of the testing platform (1), a disk (22) movably connected to the surface of the rotating column (21), a first vision probe (23) and a second vision probe (24) set on the top of the disk (22). The stamped parts are tested by setting the testing mechanism (2). The top of the testing platform (1) is provided with a clamping mechanism (3). The clamping mechanism (3) includes a support shaft (31) movably connected inside the rotating column (21), a rotating plate (32) installed on one side of the support shaft (31), a fixed plate (33) installed on the top of the rotating plate (32), a crossbar (34) slidably connected inside the rotating plate (32), a slider (35) installed on one side of the crossbar (34), a first convex ring (36) installed on the top of the disc (22), and a clamping plate (37) slidably connected to the top of the rotating plate (32). The clamping mechanism (3) clamps the stamped parts. The top of the disc (22) is provided with a flipping mechanism (4), which includes a drive gear (41) mounted on the surface of the support shaft (31), a toothed plate (42) meshing with one side of the drive gear (41), a pulley (43) mounted on the top of the toothed plate (42), a top plate (44) slidably connected to the top of the pulley (43), a second convex ring (45) mounted on the bottom of the top plate (44), and a drive assembly (46) set at the bottom of the disc (22). The flipping mechanism (4) is used to flip and detect the stamped parts.

2. The online inspection system for the dimensional accuracy of stamped parts based on machine vision according to claim 1, characterized in that: The drive assembly (46) includes a drive motor (461) mounted on the top of the detection platform (1), a first gear (462) mounted on the output end of the drive motor (461), and a second gear (463) mounted on the surface of the rotating column (21).

3. The online inspection system for the dimensional accuracy of stamped parts based on machine vision according to claim 2, characterized in that: The first gear (462) meshes with the second gear (463) on one side, and the slider (35) is slidably connected to the first convex ring (36) on one side.

4. The online inspection system for the dimensional accuracy of stamped parts based on machine vision according to claim 1, characterized in that: A discharge mechanism (5) is provided on one side of the disc (22). The discharge mechanism (5) includes a discharge trough (51) opened on the top of the disc (22), a sealing plate (52) movably connected to the inside of the discharge trough (51), and a hydraulic rod (53) movably connected to the bottom of the sealing plate (52).

5. The online inspection system for the dimensional accuracy of stamped parts based on machine vision according to claim 4, characterized in that: The bottom of the discharge trough (51) is connected to the discharge pipe (54), the surface of the rotating column (21) is fixedly connected to the scraper (55), and the other end of the hydraulic rod (53) is movably connected to the inner wall of the discharge pipe (54).

6. The online inspection system for the dimensional accuracy of stamped parts based on machine vision according to claim 1, characterized in that: The rotating column (21) has a vertical rod (6) installed inside. A movable plate (7) and a first spring (8) are sleeved on the surface of the vertical rod (6). One side of the movable plate (7) is fixedly connected to the toothed plate (42).

7. The online inspection system for the dimensional accuracy of stamped parts based on machine vision according to claim 1, characterized in that: A sliding block (9) is fixedly connected to the surface of the crossbar (34), the top of the sliding block (9) is fixedly connected to the clamping plate (37), and a second spring (10) is sleeved on the surface of the crossbar (34).

8. The online inspection system for the dimensional accuracy of stamped parts based on machine vision according to claim 1, characterized in that: A crossbeam (11) is fixedly connected to the surface of the top plate (44), and both sides of the crossbeam (11) are fixedly connected to the disc (22).

9. The online inspection system for the dimensional accuracy of stamped parts based on machine vision according to claim 1, characterized in that: The first visual probe (23) is fixedly connected to a first bracket (12), and the second visual probe (24) is fixedly connected to a second bracket (13).

10. The online inspection system for the dimensional accuracy of stamped parts based on machine vision according to claim 5, characterized in that: The bottom of the discharge pipe (54) is provided with a waste shell (14), the inside of the disc (22) is provided with a discharge trough (15), and the bottom of the discharge trough (15) is provided with a collection shell (16).

Images