CN220872370U

CN220872370U - Part surface defect detection equipment based on machine vision

Info

Publication number: CN220872370U
Application number: CN202322404376.6U
Authority: CN
Inventors: 王占威; 史冬来; 赵俊霖; 贺孟伟
Original assignee: Zhengzhou Hongxiang Automation Equipment Technology Co ltd
Current assignee: Zhengzhou Hongxiang Automation Equipment Technology Co ltd
Priority date: 2023-09-05
Filing date: 2023-09-05
Publication date: 2024-04-30
Anticipated expiration: 2033-09-05

Abstract

The utility model relates to a part surface defect detection device based on machine vision, which belongs to the technical field of part surface detection, and comprises a connecting frame, a support plate and a bottom plate, and is characterized in that: the connecting frame is provided with a driving mechanism, and a CCD visual camera body is arranged above the bottom plate. This part surface defect check out test set based on machine vision is provided with and bypasses subassembly and lifting unit, around to the subassembly under driving motor, the gear, link and the effect of structure such as annular guide rail, can realize the accurate positioning and the motion control to part and CCD vision camera body, help guaranteeing accuracy and stability in the testing process, improve the reliability of testing result, lifting unit can realize the reciprocating motion from top to bottom of CCD vision camera body under the effect of elevator motor, reciprocating screw and slider, make the CCD vision camera body can scan more comprehensively and detect each region of part, improve the comprehensiveness and the effect of detection, in order to guarantee that no key detection information is missed or lost when detecting.

Description

Part surface defect detection equipment based on machine vision

Technical Field

The utility model relates to the technical field of part surface detection, in particular to part surface defect detection equipment based on machine vision.

Background

With the technology upgrade of the whole machining industry, the requirements on the inspection and detection of the mechanical finished products are higher, the machine vision is a modern detection technology for replacing human eyes with an industrial camera CCD, the industrial camera CCD is used for carrying out image processing on the detected object, the image information is converted into a digital signal, and the required characteristics are extracted from the digital signal, so that the state of the detected object is detected.

For example, chinese patent publication No. CN 213398249U discloses a part surface defect detection device based on machine vision, relates to the technical field of part surface detection, and aims to solve the problems that the flexibility in the use process of the existing detection device is low and the detection of complex parts is not comprehensive enough. The middle of bottom plate upper end is provided with the detection platform, first actuating mechanism is all installed to the corner of bottom plate upper end, and first actuating mechanism is provided with four, two install second actuating mechanism between the first actuating mechanism, and second actuating mechanism is provided with two, two install the third actuating mechanism between the second actuating mechanism, the slide is installed to the front end of third actuating mechanism, CCD vision camera is installed to the lower extreme of slide, first actuating mechanism, second actuating mechanism and third actuating mechanism all include the drive case, the end plate is all installed at the both ends of drive case, the inboard of drive case is provided with the spout.

The machine vision-based part surface defect detection equipment has higher flexibility when in use, but has some defects when in use, for example, the equipment has higher flexibility, but can only detect a certain area of a part when in part detection, and when the part is comprehensively detected, the position of the part is required to be continuously adjusted to correspond to a detection component, so that the detection efficiency is lower.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides the part surface defect detection equipment based on machine vision, which has the advantages of good detection effect and the like, and solves the problem of lower detection efficiency.

In order to achieve the above purpose, the present utility model provides the following technical solutions: part surface defect check out test set based on machine vision, including link, extension board and bottom plate, its characterized in that: the connecting frame is provided with a driving mechanism, and a CCD visual camera body is arranged above the bottom plate;

The driving mechanism comprises a detour assembly and a lifting assembly;

The winding assembly comprises an annular guide rail fixed on the upper surface of a connecting frame, the outer side of the annular guide rail is slidably connected with a mounting frame, the mounting frame is slidably connected with the upper surface of the connecting frame, the upper surface of the mounting frame is fixedly provided with a connecting plate, a driving motor is fixed in the connecting plate, a gear is fixed on the outer side of an output shaft of the driving motor, at least two tooth grooves are formed in the inner peripheral wall of the connecting frame, and the gear is meshed with the tooth grooves.

Further, the assembly of detouring still includes four mounting holes of seting up in the mounting bracket outside, rotate between the roof of mounting hole inner chamber and the diapire and be connected with the pulley, pulley roll connection is in the outside of annular guide rail.

Further, the lifting assembly comprises a mounting block fixed on the lower surface of the connecting plate, a sliding hole is formed in the mounting block, a lifting motor is fixed on the inner bottom wall of the sliding hole, a reciprocating screw rod is fixed on the outer side of an output shaft of the lifting motor, the top end of the reciprocating screw rod is rotationally connected to the inner top wall of the sliding hole through a bearing, a sliding block is connected to the outer side of the reciprocating screw rod in a threaded manner, the sliding block is slidably connected to the inner side of the sliding hole, and the CCD vision camera body is fixed on the front face of the sliding block.

Furthermore, at least two tooth grooves are circumferentially distributed on the inner peripheral wall of the connecting frame at equal intervals, and the mounting frame performs circular motion by taking the central point of the connecting frame as the axis.

Further, the mounting frame is a U-shaped frame.

Further, the inside of slider has offered the screw hole, reciprocal lead screw threaded connection is in the inside of screw hole.

Further, the sliding block moves linearly up and down in the sliding hole, and the width of the sliding block is matched with the width of the inner cavity of the sliding hole.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. This part surface defect check out test set based on machine vision is provided with the subassembly of detouring, and the subassembly is detoured under driving motor, gear, link and annular guide rail's isotructure's effect, can realize the accurate positioning and the motion control to part and CCD vision camera body, helps guaranteeing accuracy and stability in the testing process, improves the reliability of testing result.

2. This part surface defect check out test set based on machine vision is provided with lifting unit, and lifting unit is under the effect of elevator motor, reciprocal lead screw and slider, can realize the up-and-down reciprocating motion of CCD vision camera body, makes the CCD vision camera body can scan more comprehensively and detect each region of part, improves the comprehensiveness and the effect of detection to do not miss or lose key detection information when guaranteeing to detect.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a detour assembly of the present utility model;

FIG. 3 is a schematic view of the attachment of the mounting bracket to the pulley of the present utility model;

fig. 4 is a schematic view of a lifting assembly according to the present utility model.

In the figure: 1. a bottom plate; 2. a support plate; 3. a connecting frame; 4. a detour assembly; 401. an annular guide rail; 402. tooth slots; 403. a connecting plate; 404. a driving motor; 405. a mounting frame; 406. a gear; 407. a pulley; 408. a mounting hole; 5. a lifting assembly; 501. a reciprocating screw rod; 502. a mounting block; 503. a lifting motor; 504. a slide hole; 505. a slide block; 6. CCD vision camera body.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, in this embodiment, a machine vision-based part surface defect detecting device includes a connecting frame 3, a support plate 2 and a bottom plate 1, and is characterized in that: be equipped with actuating mechanism on the link 3, the top of bottom plate 1 is equipped with CCD vision camera body 6, opens CCD vision camera body 6 and can detect the spare part, and actuating mechanism includes detour subassembly 4 and lifting unit 5.

The CCD vision camera body 6 converts the shot target part into image signals, transmits the image signals to a special image processing system, converts the image signals into digital signals according to the information of pixel distribution, brightness, color and the like, and the image system performs various operations on the signals to extract the characteristics of the target so as to realize the detection of the surface of the part.

Referring to fig. 2-3, the detour assembly 4 in this embodiment includes an annular guide rail 401 fixed on the upper surface of the connecting frame 3, a mounting frame 405 is slidably connected to the outer side of the annular guide rail 401, after the driving motor 404 rotates, the mounting frame 405 is further moved on the annular guide rail 401, the mounting frame 405 is slidably connected to the upper surface of the connecting frame 3, a connecting plate 403 is fixed on the upper surface of the mounting frame 405, a driving motor 404 is fixed in the connecting plate 403, and after the driving motor 404 operates, a gear 406 can rotate.

The outside of the output shaft of the driving motor 404 is fixed with a gear 406, the inner peripheral wall of the connecting frame 3 is provided with at least two tooth grooves 402, the gear 406 is meshed with the tooth grooves 402, and when the gear 406 rotates, the gear 406 is matched with the tooth grooves 402 on the connecting frame 3, so that the driving motor 404 can rotate by taking the central point of the connecting frame 3 as the axle center.

After the mounting frame 405 moves, the mounting block 502 can drive the CCD visual camera body 6 to rotate, so that the CCD visual camera body 6 can detect the outer surface of a part to realize comprehensive detection of the part, the detour assembly 4 further comprises four mounting holes 408 formed in the outer side of the mounting frame 405, pulleys 407 are rotationally connected between the top wall and the bottom wall of the inner cavity of the mounting holes 408, the mounting frame 405 can enable the mounting frame 405 to move more smoothly under the action of the pulleys 407, and the pulleys 407 are in rolling connection with the outer side of the annular guide rail 401.

At least two tooth grooves 402 are circumferentially and equidistantly distributed on the inner peripheral wall of the connecting frame 3, the mounting frame 405 moves circumferentially by taking the central point of the connecting frame 3 as the axis, and the mounting frame 405 is a U-shaped frame.

The CCD visual camera body 6 can be rotated by the motion of the driving motor 404 under the action of the gear 406 and the tooth slot 402, so as to improve the detection effect.

Under the action of the structures such as the driving motor 404, the gear 406, the connecting frame 3 and the annular guide rail 401, the winding component can realize accurate positioning and motion control of parts and the CCD vision camera body 6, thereby being beneficial to ensuring the accuracy and stability in the detection process and improving the reliability of the detection result.

Referring to fig. 4, the lifting assembly 5 in this embodiment includes a mounting block 502 fixed on the lower surface of the connecting plate 403, a sliding hole 504 is formed in the mounting block 502, the sliding hole 504 can also limit a moving sliding block 505, a lifting motor 503 is fixed on the inner bottom wall of the sliding hole 504, the lifting motor 503 operates to enable the reciprocating screw 501 to rotate, and the reciprocating screw 501 is fixed on the outer side of the output shaft of the lifting motor 503.

Along with the rotation of the reciprocating screw rod 501 and the cooperation screw hole, can make slider 505 reciprocate from top to bottom in slide hole 504, the top of reciprocating screw rod 501 passes through the bearing and rotates the interior roof of connection at slide hole 504, the outside threaded connection of reciprocating screw rod 501 has slider 505, slider 505 moves in slide hole 504, CCD vision camera body 6 also can synchronous operation, under the reciprocating motion of CCD vision camera body 6 and cooperation synchronous rotation, can make CCD vision camera body 6 more accurate when carrying out comprehensive detection, in order to improve the detection effect, slider 505 sliding connection is in the inside of slide hole 504, CCD vision camera body 6 is fixed in the front of slider 505.

The inside of the sliding block 505 is provided with a threaded hole, the reciprocating screw rod 501 is in threaded connection with the inside of the threaded hole, the sliding block 505 moves linearly up and down in the sliding hole 504, and the width of the sliding block 505 is matched with the width of the inner cavity of the sliding hole 504.

The slider 505 can be moved in the slide hole 504 by the elevating motor 503 and the reciprocating screw 501, so that the CCD vision camera body 6 can be reciprocated up and down while being rotated.

The lifting assembly 5 can realize up-and-down reciprocating motion of the CCD visual camera body 6 under the action of the lifting motor 503, the reciprocating screw 501 and the sliding block 505, so that the CCD visual camera body 6 can more comprehensively scan and detect each area of the part, the comprehensiveness and effect of detection are improved, and key detection information is not missed or lost during detection.

The working principle of the embodiment is as follows:

(1) When detecting the part, place the part on bottom plate 1 earlier, open CCD vision camera body 6 again, detect the part, simultaneously when CCD vision camera body 6 detects, open driving motor 404, driving motor 404 moves the back, enable gear 406 and rotate, when gear 406 rotates back cooperation link 3 on tooth's socket 402, enable driving motor 404 rotate with link 3's central point as the axle center, and after driving motor 404 rotates, still can make mounting bracket 405 remove on annular guide 401, after mounting bracket 405 removes, accessible installation piece 502 drives CCD vision camera body 6 and rotates, make CCD vision camera body 6 can detect the surface of part, in order to realize the comprehensive detection to the part.

(2) When the mounting block 502 rotates, the lifting motor 503 can enable the reciprocating screw rod 501 to rotate, along with the rotation of the reciprocating screw rod 501 and matched with the threaded hole, the sliding block 505 can move in the sliding hole 504, the sliding hole 504 can also limit the moving sliding block 505, under the continuous rotation of the reciprocating screw rod 501, the sliding block 505 can reciprocate up and down in the sliding hole 504, at the moment, the CCD visual camera body 6 can also synchronously operate, under the reciprocating motion of the CCD visual camera body 6 and matched with the synchronous rotation, the CCD visual camera body 6 can be more accurate in comprehensive detection, and the detection effect is improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Part surface defect detection equipment based on machine vision, including link (3), extension board (2) and bottom plate (1), its characterized in that: a driving mechanism is arranged on the connecting frame (3), and a CCD visual camera body (6) is arranged above the bottom plate (1);

the driving mechanism comprises a detour assembly (4) and a lifting assembly (5);

The utility model provides a subassembly (4) of detouring, including fixing ring rail (401) at link (3) upper surface, ring rail (401) outside sliding connection has mounting bracket (405), mounting bracket (405) sliding connection is at the upper surface of link (3), the upper surface of mounting bracket (405) is fixed with connecting plate (403), the inside of connecting plate (403) is fixed with driving motor (404), the outside of driving motor (404) output shaft is fixed with gear (406), tooth's socket (402) that are not less than two have been seted up to the inner peripheral wall of link (3), gear (406) mesh with tooth's socket (402).

2. A machine vision-based part surface defect inspection apparatus as set forth in claim 1 wherein: the bypass assembly (4) further comprises four mounting holes (408) formed in the outer side of the mounting frame (405), pulleys (407) are rotatably connected between the top wall and the bottom wall of the inner cavity of the mounting holes (408), and the pulleys (407) are in rolling connection with the outer side of the annular guide rail (401).

3. A machine vision-based part surface defect inspection apparatus as set forth in claim 1 wherein: lifting assembly (5) are including fixing installation piece (502) at connecting plate (403) lower surface, slide hole (504) have been seted up to the inside of installation piece (502), the interior bottom wall of slide hole (504) is fixed with elevator motor (503), the outside of elevator motor (503) output shaft is fixed with reciprocating screw (501), the top of reciprocating screw (501) is rotated through the bearing and is connected at the interior roof of slide hole (504), the outside threaded connection of reciprocating screw (501) has slider (505), slider (505) sliding connection is in the inside of slide hole (504), CCD vision camera body (6) are fixed in the front of slider (505).

4. A machine vision-based part surface defect inspection apparatus as set forth in claim 1 wherein: at least two tooth grooves (402) are circumferentially distributed on the inner peripheral wall of the connecting frame (3) at equal intervals, and the mounting frame (405) performs circular motion by taking the central point of the connecting frame (3) as the axis.

5. A machine vision-based part surface defect inspection apparatus as set forth in claim 1 wherein: the mounting frame (405) is a U-shaped frame.

6. A machine vision-based part surface defect inspection apparatus as set forth in claim 3 wherein: the inside of slider (505) has seted up the screw hole, reciprocating lead screw (501) threaded connection is in the inside of screw hole.

7. A machine vision-based part surface defect inspection apparatus as set forth in claim 3 wherein: the sliding block (505) moves linearly up and down in the sliding hole (504), and the width of the sliding block (505) is matched with the width of the inner cavity of the sliding hole (504).