Defect detection tool for shaft parts

Abstract

The utility model discloses a flaw detection tool for shaft parts. The flaw detection tool comprises a first frame, a second frame parallel to the first frame, and a visual probe positioned on the second frame, the first frame and the second frame are respectively broken on the same side to form a first opening and a second opening; a centering clamp for clamping the shaft part is arranged at the first opening, a driving piece is arranged at the second opening, and the driving piece drives the shaft part to axially move on the detection coverage surface of the visual probe through the centering clamp; according to the shaft part flaw detection device, the shaft part is fixed by the centering clamp capable of axially moving, so that the outer circumferential surface of the shaft part moves in the detection coverage area of the visual probe, and automatic flaw detection of the shaft part is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to a defect detection tooling for shaft parts. Background Art

[0002] Although with the improvement of the current production level, automated production methods are adopted in the production and processing of shaft parts. Such production and processing methods not only have the advantages of high efficiency and low labor cost, but also are more likely to achieve large-scale production. For the defect detection process after the production of shaft parts, most of them need to use manual detection or flaw detection crack detection equipment, etc.

[0003] However, the efficiency of manual detection is low, and crack flaw detection requires a multi-axis gantry control process, and the whole process is relatively cumbersome. Summary of the Invention

[0004] The purpose of the utility model is to solve the problem that the self-centering fixture in the prior art is difficult to displace between multiple detection terminals. To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A defect detection tooling for shaft parts, including a first frame, a second frame arranged in parallel with it, and a vision probe located on the second frame; the first frame and the second frame are respectively disconnected on the same side to form a first opening and a second opening; a centering fixture for clamping the shaft part is arranged at the first opening, and a driving member is arranged at the second opening, and the driving member drives the shaft part to axially move within the detection coverage of the vision probe through the centering fixture.

[0006] Preferably, a cross beam is connected between the inner surfaces on both sides of the second frame, and a plurality of cross beams are arranged along the axis of the second frame.

[0007] Preferably, the second side support beam is an inverted L-shaped structure, and the ends of its shorter section are commonly connected to a cylindrical shaft. A sliding hole for the shaft part to slide is axially opened in the cross section of the cylindrical shaft, and the sliding hole penetrates through the cylindrical shaft.

[0008] Preferably, a bearing ring is sleeved on the outer surface of one end of the cylindrical shaft close to the detection direction, and the vision probes are arranged on both the upper and lower surfaces of the outer circle of the square. The vision probe is located directly above the extended shaft part, and its shooting surface covers the diameter length of the slender shaft.

[0009] Preferably, first locking plates are arranged outward on both the left and right side surfaces of the bearing ring, and first threaded holes are opened on the surfaces of the first locking plates; a fixed square plate is also fixedly arranged on the outer circumferential surface of the cylindrical shaft, second locking plates are arranged outward on all four sides of the fixed square plate, and second threaded holes corresponding to the first threaded holes are opened on the second locking plates.

[0010] Preferably, a centering fixture is provided at the end of the shaft part, and the jaws of the centering chuck face the side of the cylindrical shaft; support beams are provided on both side surfaces of the centering chuck, the support beams extend downward, and square moving columns are fixed at positions corresponding to the second frame.

[0011] Preferably, the driving member includes transmission member mounting plates on both side surfaces of the first frame, and the transmission member mounting plates include a through surface directly above the first frame; the driving member further includes a motor fixed to the side surface of the first frame, the motor is drivingly connected to a rotating shaft, and the rotating shaft passes through the through surface through a bearing; a gear is fixedly sleeved on the rotating shaft, and the gear is located directly above the first frame; an upper chute is opened on the bottom surface of the second frame, the upper chute penetrates the side end surface of the first frame, and a rack is slidably connected in the chute, the rack passes out of the upper chute and is connected to the square moving column, and the rack and the gear mesh with each other.

[0012] Preferably, parallel slideways are provided on the inner surface of the first frame, and lower chutes are opened in the slideways, and the bottom ends of the support beams are received in the lower chutes.

[0013] Compared with the prior art, the present utility model provides a defect detection tooling for shaft parts, and has the following beneficial effects:

[0014] In the present utility model, by fixing the shaft part with a centering fixture that can move axially, the outer circumferential surface of the shaft part moves within the detection coverage area of the vision probe, thereby completing the automatic defect detection of the shaft part.

[0015] Parts not involved in this device are the same as or can be implemented using the prior art. The structure of the present utility model is simple and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0017] Figure 2 is another perspective view of an embodiment of the present utility model;

[0018] Figure 3 is another perspective view of an embodiment of the present utility model;

[0019] Figure 4 is an enlarged structural view of the bearing ring part of the present utility model;

[0020] Figure 5 is a schematic side view of an embodiment of the present utility model;

[0021] Figure 6This is the detection principle block diagram of the vision probe of the present utility model;

[0022] In the figure: 1. First frame; 2. First side support beam; 3. Second frame; 4. First opening; 5. Cross beam; 6. Second side support beam; 7. Cylindrical shaft; 8. Slide hole; 9. Shaft parts; 10. Bearing ring; 11. Vision probe; 12. Fixed square plate; 13. Motor; 14. Rotating shaft; 15. Driving part mounting plate; 16. Gear; 17. Upper chute; 18. Rack; 19. Square moving column; 20. Support beam; 21. Slideway; 22. Lower chute; 23. Centering fixture;

[0023] 24. Claw; 25. Second opening; 101. First locking plate; 102. First threaded hole; 121. Second locking plate; 122. Second threaded hole. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] First, the prior art and related concepts involved in the embodiments of the present invention will be described:

[0027] Vision probe: A key component in a machine vision system, used to collect image or video data for subsequent image processing and analysis. Vision probes are divided into optical probes and electronic probes. Embodiment

[0028] Referring to Figures 1-6 , this embodiment provides a defect detection tooling for shaft parts, including a first frame 1 placed horizontally on a horizontal plane and a second frame 3 located directly above and parallel to the first frame 1; the first frame 1 and the second frame 3 are respectively disconnected on the same side to form a first opening 4 and a second opening 25; both outer surfaces of the two sides of the first frame 1 are fixed with first side support beams 2, and the ends of the first side support beams 2 are fixedly connected to the outer surface of the second frame 3; it can be connected to the side surface of the second frame 3 or directly fixed on the upper surface.

[0029] Exemplarily, the detection tooling is a structure with two parallel U-shaped frames, and the two parallel U-shaped frames are connected by a first side support beam 2. Since it is a frame structure, there are multiple accommodation spaces between them, which makes it easy to install other structural components, and makes the detection tooling lighter and the support more stable.

[0030] Further, a cross beam 5 is connected between the inner surfaces on both sides of the second frame 3, and a plurality of cross beams 5 are provided at equal distances along the axis of the second frame 3. The top surface of the cross beam 5 is provided with an inverted L-shaped second side support beam 6. The second side support beam 6 is an inverted L-shaped structure, and the ends of its shorter section are commonly connected to a cylindrical shaft 7. The cylindrical shaft 7 is axially provided with a sliding hole 8 for the sliding of a shaft-like part 9 in the cross section; the sliding hole 8 penetrates through the cylindrical shaft 7.

[0031] When it is necessary to detect the defects of the slender shaft part, the slender shaft part is inserted into the cylindrical shaft 7 along the opening of the sliding hole 8, and the other end extends to the other opening direction of the cylindrical shaft 7.

[0032] Exemplarily. In the embodiment, the connection mode between the cylindrical shaft 7 and the second support beam 6 is preferably a detachable threaded connection or a flange connection mode. When it is necessary to detect slender shafts with different diameters, the cylindrical shaft 7 with different measuring sliding holes 8 can be directly replaced.

[0033] Further, a bearing ring 10 is sleeved on the outer surface of one end of the cylindrical shaft 7 close to the detection direction. The outer ring of the bearing ring 10 is preferably square, and visual probes 11 are provided on the upper and lower surfaces of the outer ring of the square. The shooting lens of the visual probe 11 is located directly above the extended shaft-like part 9, and its shooting surface can cover the diameter length of the slender shaft.

[0034] In order to prevent the bearing ring 10 from rotating during the detection process, exemplarily, first locking plates 101 are provided outwardly on both left and right side surfaces of the bearing ring 10, and first threaded holes 102 are provided on the surfaces of the first locking plates 101; and a fixed square plate 12 is fixedly provided on the outer circumferential surface of the cylindrical shaft 7. The fixed square plate 12 is preferably square, and second locking plates 121 are provided outwardly on its four sides. Second threaded holes 122 corresponding to the first threaded holes 102 are provided on the second locking plates 121.

[0035] During the inspection process, the visual probe 11 needs to be kept stable, and the bearing ring 10 needs to be fixed in the circumferential direction. Therefore, a bolt is inserted into the first threaded hole 102 and the second threaded hole 122 through a bolt thread structure, and one end of the bolt abuts against the first locking plate 101 or the second locking plate 121 through a bolt cap, and one end of the screw abuts against the second locking plate 121 or multiple locking plates through a nut, thereby fixing the bearing ring and preventing the visual probe 11 from rotating. Conversely, when the visual probe 11 needs to be rotated to the left and right sides to detect defects in the shaft parts 9, the bearing ring 10 is loosened, the visual probe 11 is rotated to the left and right sides, and then it is locked and fixed.

[0036] Furthermore, in order to keep the shaft part 9 centered and axially movable during the detection process, a centering fixture 23 for centering and fixing the shaft part 9 is provided at the end of the shaft part 9. In this embodiment, the centering fixture 23 is preferably a chuck structure such as a three-jaw chuck or a four-jaw chuck.

[0037] 24 is toward the side of the cylindrical shaft 7, and support beams 20 are provided on both sides of the centering chuck. The support beams 20 extend downward, and a square movable column 19 is fixed at a position corresponding to the second frame 3.

[0038] The direction moving column realizes its axial displacement through a driving member, thereby driving the centering fixture 23 through the support beam 20. The centering fixture 23 centers the shaft part 9 and pulls the shaft part 9, so that the circumferential surface of the shaft part 9 passes through the detection area of ​​the visual probe 11, thereby realizing defect detection on its outer surface.

[0039] Exemplarily, the driving member includes a transmission member mounting plate 15 located on both sides of the first frame 1, and the transmission member mounting plate 15 includes a through surface located directly above the first frame 1; the driving member also includes a motor 13 fixed to the side of the first frame 1, and the motor 13 is connected to the rotating shaft 14 in a transmission manner, and the bearing of the rotating shaft 14 passes through the through surface. A gear 16 is fixedly sleeved on the rotating shaft 14, and the gear 16 is located directly above the first frame 1; an upper slide groove 17 is provided on the bottom surface of the second frame 3, and the upper slide groove 17 passes through the side end surface of the first frame 1, and a rack 18 is slidably connected in the slide groove, and the rack 18 passes through the upper slide groove 17 and is connected to the square movable column 19, and the rack 18 and the gear 16 are meshed with each other.

[0040] Furthermore, in order to improve the support stability of the rack 18 in the upper slide groove 17, the upper slide groove 17 is preferably a T-shaped cavity structure, and the sliding part of the rack 18 adapted to the slide groove is a T-shaped solid structure.

[0041] Further, on the inner surface of the first frame 1, there are parallel slideways 21. A lower chute 22 is formed in the slideway 21, and the bottom end of the support beam 20 is received in the lower chute 22.

[0042] In the above sliding structure, various sliding structures can be adapted between the chute and the sliding member, such as pulleys or balls. For example, lubricating oil can be filled in the chute.

[0043] When detecting defects of the shaft-like part 9, the shaft-like part 9 is inserted into the sliding hole 8 of the cylindrical shaft 7, and the other end extends out of the cylindrical shaft 7. Therefore, the maximum length of the cylindrical shaft 7 in this embodiment should also ensure the minimum length of the slender shaft. At this time, a centering fixture 23 for clamping the shaft-like part 9 is provided at the first opening 4, and a driving member is provided at the second opening 25. The driving member drives the shaft-like part 9 to axially move within the detection coverage of the vision probe 11 through the centering fixture 23. Specifically, one end of the slender shaft is fixed by the centering fixture 23, such as a three-jaw chuck; the motor 13 is started, the motor 13 drives the gear 16, the gear 16 drives the rack 18, the rack 18 drives the square moving column 19, the direction moving column drives the centering fixture 23 through the support beam 20, and the centering fixture 23 drives the shaft-like part 9 to axially move; during the axial movement, the vision probe 11 detects defects on the circumferential surface of the shaft-like part 9.

[0044] Reference Figure 6 , in this embodiment, the vision probe adopts a machine vision probe for detecting defects of parts. In order to reduce the winding trouble caused by wired transmission, the vision probe in this embodiment preferably adopts a data probe with a built-in wireless communication module such as Wi-Fi or 4G / 5G. Its working process is as follows:

[0045] Image acquisition module: The image sensor in the probe captures the image of the target object (shaft-like part).

[0046] Wireless communication transmission: The image data is transmitted wirelessly to the processing unit.

[0047] Image processing module: The processing unit preprocesses the image, such as noise removal, contrast enhancement, etc.

[0048] Feature extraction module: Software algorithms identify key features in the image for dimension measurement, defect detection, etc.

[0049] Decision feedback: According to the analysis results, the system makes a judgment and outputs it to a display device, such as a display screen or an alarm module.

[0050] Regarding the technology for detecting surface defects of parts, there are already various records in the prior art and will not be elaborated here.

[0051] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A flaw detection tooling for shaft parts, characterized in that, The invention comprises a first frame (1), a second frame (3) arranged in parallel therewith, and a visual probe (11) located on the second frame (3); the first frame (1) and the second frame (3) are respectively disconnected on the same side to form a first opening (4) and a second opening (25); a centering fixture (23) for clamping a shaft part (9) is provided at the first opening (4), and a driving member is provided at the second opening (25), and the driving member drives the shaft part (9) to move axially on the detection coverage surface of the visual probe (11) through the centering fixture (23).

2. The flaw detection tooling for a shaft part according to claim 1, characterized in that, A crossbeam (5) is connected between the inner surfaces of both sides of the second frame (3), and a plurality of crossbeams (5) are provided along the axis of the second frame (3).

3. The flaw detection tooling for a shaft part according to claim 1, characterized in that, The second side support beam (6) is an inverted L-shaped structure, and the ends of the shorter sections thereof are connected to a cylindrical shaft (7). The cylindrical shaft (7) is provided with a sliding hole (8) for sliding of shaft parts (9) in the cross section along the axial direction, and the sliding hole (8) passes through the cylindrical shaft (7).

4. The flaw detection tooling for a shaft part according to claim 3, characterized in that, The cylindrical shaft (7) is provided with a bearing ring (10) on the outer surface of one end close to the detection direction, and the visual probe (11) is provided on the upper and lower sides of the square outer ring. The visual probe (11) is located directly above the extended shaft part (9), and its shooting surface covers the diameter length of the slender shaft.

5. The flaw detection tooling for a shaft part according to claim 4, characterized in that, The left and right side surfaces of the bearing ring (10) are both provided with first locking plates (101) facing outwards, and the surface of the first locking plate (101) is provided with a first threaded hole (102); the outer circumferential surface of the cylindrical shaft (7) is also fixedly provided with a fixed square plate (12), and the four sides of the fixed square plate are both provided with second locking plates (121) facing outwards, and the second locking plate (121) is provided with a second threaded hole (122) corresponding to the first threaded hole (102).

6. The flaw detection tooling for a shaft part according to claim 4, characterized in that: A centering clamp (23) is provided at the end of the shaft part (9), and the claw (24) of the centering clamp faces one side of the cylindrical shaft (7); support beams (20) are provided on both side surfaces of the centering chuck, and the support beams (20) extend downward, and a square movable column (19) is fixed at the position corresponding to the second frame (3).

7. The flaw detection tooling for a shaft part according to claim 6, characterized in that, The driving member comprises a transmission member mounting plate (15) located on both sides of the first frame (1), and the transmission member mounting plate (15) comprises a through surface located directly above the first frame (1); the driving member also comprises a motor (13) fixed to the side of the first frame (1), and the motor (13) is connected to a rotating shaft (14) in a transmission manner, and the bearing of the rotating shaft (14) passes through the through surface; a gear (16) is fixedly sleeved on the rotating shaft (14), and the gear (16) is located directly above the first frame (1); an upper slide groove (17) is provided on the bottom surface of the second frame (3), and the upper slide groove (17) passes through the side end surface of the first frame (1), and a rack (18) is slidably connected in the slide groove, and the rack (18) passes through the upper slide groove (17) and is connected to the square movable column (19), and the rack (18) and the gear (16) are meshed with each other.

8. The flaw detection tooling for a shaft part according to claim 6, characterized in that, On the inner surface of the first frame (1), there are parallel slideways (21). A lower slideway (22) is formed in the slideway (21), and the bottom end of the support beam (20) is received in the lower slideway (22).

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