CN114813765B - Non-planar high-reflection part surface quality detection device and detection method - Google Patents
Non-planar high-reflection part surface quality detection device and detection methodInfo
- Publication number
- CN114813765B CN114813765B CN202210284991.5A CN202210284991A CN114813765B CN 114813765 B CN114813765 B CN 114813765B CN 202210284991 A CN202210284991 A CN 202210284991A CN 114813765 B CN114813765 B CN 114813765B
- Authority
- CN
- China
- Prior art keywords
- motion
- tray
- bracket
- image
- darkroom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/8901—Optical details; Scanning details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention provides a non-planar high-reflection part surface quality detection device and a detection method, wherein the non-planar high-reflection part surface quality detection device comprises an operation table, a darkroom, an area array camera, two linear array cameras, a motion driving mechanism and a motion tray, wherein the darkroom is fixed on the operation table, a sliding groove is formed in the operation table, the motion tray is arranged in the sliding groove in a sliding mode, the motion driving mechanism is fixed on the operation table, the motion driving mechanism is in transmission connection with the motion tray and is used for driving the motion tray to slide along the sliding groove, the area array camera and the two linear array cameras are sequentially fixed on the darkroom along the sliding direction of the motion tray, and the motion driving mechanism is used for driving a part to be detected to move, so that the area array camera and the linear array camera jointly shoot the part to be detected at multiple angles, the high-resolution shooting problem of the pure flat surface of the part to be detected is solved, the reflection problem caused by the uneven shooting of the part surface is solved, and the high-definition shooting problem of the transparent surface is solved through the back light.
Description
Technical Field
The invention relates to the technical field of part surface quality detection, in particular to a non-planar high-reflection part surface quality detection device and a detection method.
Background
The machine vision detection technology is widely applied due to high accuracy, non-contact and good applicability. In order to achieve the attractive effect, many metal injection molded parts are non-planar and highly reflective surfaces, for example, part of injection molded parts on an automobile instrument panel, so that the metal injection molded parts are non-planar, highly reflective, transparent in part of surfaces and extremely high in surface quality requirements. However, since such high-precision photographing of the surface is very difficult, the machine vision photographing method applied in the general machine vision cannot cope with the non-planar, high-reflection appearance and high-quality inspection. The current inspection method mainly relies on the fact that people with good eyesight observe the surface quality slowly and carefully from multiple angles, so that the reliability is low.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides a non-planar high-reflection part surface quality detection device which comprises an operation table, a darkroom, an area array camera, two linear array cameras, a motion driving mechanism and a motion tray, wherein the operation table comprises a main body, a plurality of linear array cameras and a plurality of linear array cameras, wherein the linear array cameras are arranged on the main body, and the linear array cameras are arranged on the main body
The darkroom is fixed on the operation table;
The operation table is provided with a chute;
The moving tray is arranged in the chute in a sliding way;
The motion driving mechanism is fixed on the operation table and is in transmission connection with the motion tray and used for driving the motion tray to slide along the chute;
the area array camera and the two linear array cameras are sequentially fixed in the darkroom along the sliding direction of the moving tray.
Optionally, the area camera is oriented vertically toward the motion tray.
Optionally, the non-planar high-reflection part surface quality detection device further comprises a first bracket and a second bracket, the sliding directions of the first bracket and the second bracket moving tray are sequentially fixed in the darkroom, and the two linear array cameras are respectively fixed in the first bracket and the second bracket.
Optionally, the first support is all inclined to the direction of second support, and the second support is all inclined to the direction of first support and is set up, and the orientation of two linear array cameras is the same with the inclination direction of corresponding first support and second support.
Optionally, the inclination angles of the first bracket and the second bracket are 40-50 degrees.
Optionally, the darkroom includes a plurality of skeletons, darkroom door and tie-beam, and a plurality of skeletons are fixed in the operation panel in proper order along the slip direction of motion tray, and the tie-beam passes through a plurality of skeletons of connection, and the darkroom door is installed in one side of skeleton.
Optionally, the non-planar high-reflection part surface quality detection device further comprises a clamp, and the clamp is fixed on the motion tray.
Optionally, the non-planar high-reflection part surface quality detection device further comprises a light source group and a photoelectric switch, wherein the light source group comprises a surface light source and two convex lens line light sources, the surface light source is fixed on the motion tray, the two convex lens line light sources are respectively fixed below the two linear array cameras and are consistent with the orientation of the linear array cameras, the photoelectric switch is fixed on the darkroom, and the photoelectric switch is electrically connected with the light source group.
Optionally, the motion driving mechanism is a screw rod and a motor, the motor is fixed on the lower surface of the operating platform, one end of the screw rod is connected with the motor, and the other end of the screw rod is in threaded connection with the motion tray.
The invention also provides a non-planar high-reflection part surface quality detection method, which is carried out by the non-planar high-reflection part surface quality detection device and comprises the following steps:
opening a darkroom to fix the part to be detected on the motion tray;
Closing a darkroom, starting an area array camera to shoot, and obtaining a first image;
Starting a motion driving mechanism to drive a motion tray to move forward, and starting a linear array camera to shoot so as to acquire a second image;
starting a motion driving mechanism to drive the motion tray to reversely move, and starting another linear array camera to shoot so as to acquire a third image;
And splicing the first image, the second image and the third image to obtain the complete image of the surface of the non-planar high-reflection part.
Compared with the prior art, the non-planar high-reflection part surface quality detection device has the beneficial effects that the motion driving mechanism is adopted to drive the part to be detected to move, so that the area-array camera and the linear-array camera shoot the part to be detected together at multiple angles, the high-resolution shooting problem of the pure flat surface of the high-reflection part is solved, the shot images are spliced, the reflection problem caused by the unevenness of part surfaces is solved, and the high-definition shooting problem of part transparent surfaces is solved through backlight shooting, so that the non-planar high-reflection part surface quality detection device has good practicability.
Drawings
FIG. 1 is a perspective view of a non-planar high-reflectivity part surface quality inspection device provided by the invention;
fig. 2 is a front view of the device for detecting the surface quality of the non-planar high-reflection part.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention will now be further described with reference to specific examples and figures, but not by way of limitation.
Referring to fig. 1 and 2, the device for detecting the surface quality of a non-planar high-reflection part disclosed by the embodiment of the invention comprises an operation table 1, a darkroom, an area array camera 4, a first linear array camera 6, a second linear array camera 9, a motion driving mechanism and a motion tray 11, wherein the darkroom is fixed on the operation table 1, a chute is formed in the operation table 1, the motion tray 11 is slidably arranged in the chute, the motion driving mechanism is fixed on the operation table 1, the motion driving mechanism is in transmission connection with the motion tray 11 and is used for driving the motion tray 11 to slide along the chute, and the area array camera 4 and the two linear array cameras are sequentially fixed on the darkroom along the sliding direction of the motion tray 11.
Further, the non-planar high-reflection part surface quality detection device of the embodiment further comprises a first bracket 5 and a second bracket 8, the sliding directions of the moving trays 11 of the first bracket 5 and the second bracket 8 are sequentially fixed in the darkroom, and the two linear array cameras are respectively fixed in the first bracket 5 and the second bracket 8. It is noted that, in the present embodiment, the first support 5 is disposed obliquely to the direction of the second support 8, the second support 8 is disposed obliquely to the direction of the first support 5, and the directions of the two line cameras are the same as the oblique directions of the corresponding first support 5 and second support 8. And the inclination angles of the first bracket 5 and the second bracket 8 are 45 deg.. Of course, according to actual needs, the inclination angles of the first bracket 5 and the second bracket 8 can be set between 40 degrees and 50 degrees. While the area camera 4 is oriented vertically towards the moving tray 11.
Further, the darkroom includes a plurality of skeletons 2, darkroom door and tie beam 3, and a plurality of skeletons 2 are fixed in operation panel 1 in proper order along the slip direction of motion tray 11, and tie beam 3 through connection a plurality of skeletons 2, and the darkroom door is installed in one side of skeleton 2.
Further, the non-planar high-reflection part surface quality detection device also comprises a clamp 13, a light source group and a photoelectric switch 7. A clamp 13 is fixed to the moving tray 11 for clamping and fixing the part 14 to be inspected. The light source group comprises a surface light source 12, a first convex lens line light source 15 and a second convex lens line light source 16, the surface light source 12 is fixed on the motion tray 11, the two convex lens line light sources are respectively fixed on the two linear array cameras, the orientation of the convex lens line light sources is the same as that of the two linear array cameras, the photoelectric switch 7 is fixed on the darkroom, and the photoelectric switch 7 is electrically connected with the light source group.
Further, the motion driving mechanism comprises a screw rod 17 and a motor 10, the motor 10 is fixed on the lower surface of the operating platform 1, one end of the screw rod 17 is connected with the motor 10, and the other end of the screw rod 17 is in threaded connection with the motion tray 11.
Since the part 14 to be inspected is mostly plastic, the part 14 to be inspected has a highly reflective surface, not a complete plane, but a part that is transparent. Therefore, during the inspection process, a single angle is affected by the reflection of light, and the surface quality of the part 14 to be inspected cannot be observed. The method of combining the low-angle linear light source with the low-angle linear array camera shooting is adopted to solve the high-resolution shooting problem of the pure flat surface of the high-reflection part, and the two opposite low-angle shooting images are spliced to solve the reflection problem caused by the unevenness of part of the surface, and the high-definition shooting problem of the part of the transparent surface is solved through backlight shooting.
The embodiment also provides a method for detecting the surface quality of the non-planar high-reflection part, which is performed by the device for detecting the surface quality of the non-planar high-reflection part, and comprises the following steps:
Opening a darkroom to fix the part to be detected on the motion tray 11;
Closing a darkroom, starting an area array camera 4 to shoot, and acquiring a first image;
starting a motion driving mechanism to drive the motion tray 11 to move forward, and starting a linear array camera to shoot so as to acquire a second image;
starting a motion driving mechanism to drive the motion tray 11 to reversely move, and starting another linear array camera to shoot so as to acquire a third image;
And splicing the first image, the second image and the third image to obtain the complete image of the surface of the non-planar high-reflection part. And finally, judging, classifying and grading the defects according to whether the surface defects exist in the image analysis part or not, and giving a prompt according to the result.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the embodiments and scope of the present invention, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the teachings of the present invention, which are intended to be included within the scope of the present invention.
Claims (6)
1. A non-planar high-reflection part surface quality detection device is characterized by comprising an operation table, a darkroom, an area array camera, two linear array cameras, a motion driving mechanism and a motion tray, wherein the operation table is used for detecting the surface quality of a non-planar high-reflection part
The darkroom is fixed on the operation table;
A chute is formed in the operation table;
the motion tray is arranged in the chute in a sliding way;
The motion driving mechanism is fixed on the operating platform and is in transmission connection with the motion tray,
The movable tray is used for driving the movable tray to slide along the sliding chute;
The area array camera and the two linear array cameras are sequentially fixed in the darkroom along the sliding direction of the motion tray, and the area array camera faces the motion tray vertically;
The camera also comprises a first bracket and a second bracket, wherein the first bracket and the second bracket are sequentially fixed in the darkroom along the sliding direction of the motion tray, and the two linear array cameras are respectively fixed in the first bracket and the second bracket; the directions of the first bracket and the second bracket are obliquely arranged, the directions of the first bracket and the second bracket are opposite, the directions of the two linear array cameras are the same as the oblique directions of the corresponding first bracket and second bracket, and the inclination angles of the first bracket and the second bracket are 40-50 degrees;
The linear array camera comprises a motion tray, a light source group and a lens group, wherein the light source group comprises a surface light source and two convex lens linear light sources, the surface light source is fixed on the motion tray, and the two convex lens linear light sources are respectively fixed below the two linear array cameras and are consistent with the linear array cameras in orientation;
The non-planar high-reflection part comprises a high-reflection pure flat surface, a non-pure flat surface and a part of transparent surface, wherein the linear array camera is used for shooting the high-reflection pure flat surface and the non-pure flat surface, and the area array camera is used for shooting the transparent surface in a backlight way;
the planar array camera is used for acquiring a first image, one linear array camera is used for shooting when the tray moves forward to acquire a second image, the other linear array camera is used for shooting when the tray moves backward to acquire a third image, and the complete surface image of the non-planar high-reflection part is formed by splicing the first image, the second image and the third image.
2. The non-planar high-reflectivity part surface quality inspection device of claim 1, wherein the darkroom comprises a plurality of frames, darkroom doors and connecting beams, the frames are sequentially fixed on the operation table along the sliding direction of the motion tray, the connecting beams are connected with the frames in a penetrating manner, and the darkroom doors are mounted on one side of the frames.
3. The non-planar high light reflecting part surface quality inspection device of claim 1 further comprising a clamp secured to the moving tray.
4. The device for detecting the surface quality of a non-planar high-reflectivity part according to claim 1, further comprising a photoelectric switch, wherein the photoelectric switch is fixed to the darkroom, and the photoelectric switch is electrically connected with the light source group.
5. The non-planar high-reflectivity part surface quality detection device according to claim 1, wherein the motion driving mechanism comprises a screw rod and a motor, the motor is fixed on the lower surface of the operating platform, one end of the screw rod is connected with the motor, and the other end of the screw rod is in threaded connection with the motion tray.
6. A method for detecting the surface quality of a non-planar high-reflectivity part, which is characterized by comprising the following steps of:
Opening a darkroom to fix the part to be detected on the motion tray;
Closing a darkroom, starting an area array camera to shoot, and obtaining a first image;
Starting a motion driving mechanism to drive a motion tray to move forward, and starting a linear array camera to shoot so as to acquire a second image;
starting a motion driving mechanism to drive the motion tray to reversely move, and starting another linear array camera to shoot so as to acquire a third image;
and splicing the first image, the second image and the third image to obtain a complete image of the surface of the non-planar high-reflection part, and finally analyzing whether the part has surface defects according to the image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210284991.5A CN114813765B (en) | 2022-03-22 | 2022-03-22 | Non-planar high-reflection part surface quality detection device and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210284991.5A CN114813765B (en) | 2022-03-22 | 2022-03-22 | Non-planar high-reflection part surface quality detection device and detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114813765A CN114813765A (en) | 2022-07-29 |
| CN114813765B true CN114813765B (en) | 2025-08-15 |
Family
ID=82530932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210284991.5A Active CN114813765B (en) | 2022-03-22 | 2022-03-22 | Non-planar high-reflection part surface quality detection device and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114813765B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116242840A (en) * | 2022-11-28 | 2023-06-09 | 浙江大学 | A device and method for realizing defect detection based on machine vision |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023164A (en) * | 2009-09-23 | 2011-04-20 | 法国圣-戈班玻璃公司 | Device and method for detecting local defects of transparent surface plate |
| CN205826551U (en) * | 2016-06-12 | 2016-12-21 | 深圳市智致物联科技有限公司 | Mobile phone light guide panel defective vision automatic identification equipment |
| CN110044931A (en) * | 2019-04-23 | 2019-07-23 | 华中科技大学 | A kind of detection device on bend glass surface and internal flaw |
| CN212341030U (en) * | 2020-06-30 | 2021-01-12 | 京东方科技集团股份有限公司 | Display panel detection device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011075534A (en) * | 2009-10-01 | 2011-04-14 | Hikichi Seiko Kk | Curved-surface appearance inspection apparatus |
| KR101758647B1 (en) * | 2016-04-25 | 2017-07-17 | 주식회사 제이이노텍 | Inspection apparatus of non-planar display panel |
| CN111624206B (en) * | 2020-07-03 | 2021-08-31 | 东北大学 | Metal surface defect detection method based on line scan camera stereo vision |
-
2022
- 2022-03-22 CN CN202210284991.5A patent/CN114813765B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023164A (en) * | 2009-09-23 | 2011-04-20 | 法国圣-戈班玻璃公司 | Device and method for detecting local defects of transparent surface plate |
| CN205826551U (en) * | 2016-06-12 | 2016-12-21 | 深圳市智致物联科技有限公司 | Mobile phone light guide panel defective vision automatic identification equipment |
| CN110044931A (en) * | 2019-04-23 | 2019-07-23 | 华中科技大学 | A kind of detection device on bend glass surface and internal flaw |
| CN212341030U (en) * | 2020-06-30 | 2021-01-12 | 京东方科技集团股份有限公司 | Display panel detection device |
Non-Patent Citations (2)
| Title |
|---|
| 注塑件常见外观缺陷检测系统的研究与开发;崔炽标;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》;20190315;6, 10-11, 18 * |
| 结合暗场散射与曲率成像的镜面缺陷检测方法;苏程程等;《光学仪器》;20210708;第43卷(第3期);2-4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114813765A (en) | 2022-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20230408791A1 (en) | Optical device alignment methods | |
| EP1789831B1 (en) | Focusing method for the high-speed digitalisation of microscope slides and slide displacing device, focusing optics, and optical rangefinder | |
| CN114813765B (en) | Non-planar high-reflection part surface quality detection device and detection method | |
| US8169603B2 (en) | Lens-testing apparatus and lens-testing method having a plurality of combinations of object distances | |
| CN108593657A (en) | A kind of image acquiring device for small-size magnetic material parts | |
| CN100383593C (en) | Optical device and inspection module | |
| US7986402B2 (en) | Three dimensional profile inspecting apparatus | |
| KR101859660B1 (en) | Apparatus for inspecting the surface of electric vehicle battery | |
| US5414458A (en) | Semiconductor device lead inspection system | |
| KR100795400B1 (en) | Display panel lighting inspection device | |
| CN219417261U (en) | Imaging device applied to mobile phone screen module detection | |
| CN219590209U (en) | Middle road direct-irradiation type edge three-side detection optical system and edge three-side detection device | |
| KR101391312B1 (en) | Camera assembly for back light unit inspecting apparatus | |
| KR102551372B1 (en) | Vision scanning device equipped with 3D shape recognition function | |
| CN115575094A (en) | A kind of testing equipment and testing method of dual camera module Rotation | |
| CN108760248A (en) | Camera module glare detection device | |
| USRE43925E1 (en) | Three dimensional profile inspecting apparatus | |
| CN115170577B (en) | Method and system for detecting defects of edge area of display panel | |
| KR20220086879A (en) | Vision inspection apparatus for enhancing operation efficiency | |
| CN119880944A (en) | Optical detection device and appearance detection method | |
| CN112595671A (en) | Ray apparatus detection device | |
| CN106066158A (en) | Determinator | |
| CN223926268U (en) | Detection device | |
| CN116559186B (en) | A visual inspection method for terminal blocks | |
| CN119574452B (en) | Copper column CCD inspection equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |