CN202075755U - Visual detection device for microcracks on surface of workpiece - Google Patents
Visual detection device for microcracks on surface of workpiece Download PDFInfo
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- CN202075755U CN202075755U CN2011201354908U CN201120135490U CN202075755U CN 202075755 U CN202075755 U CN 202075755U CN 2011201354908 U CN2011201354908 U CN 2011201354908U CN 201120135490 U CN201120135490 U CN 201120135490U CN 202075755 U CN202075755 U CN 202075755U
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Abstract
The utility model discloses a visual detection device for microcracks on the surface of a workpiece, and comprises an image collecting device, an image preprocessing module, a feature processing module and a statistical analysis module which are connected in sequence. The image collecting device is installed on an image collecting platform and used for shooting surface images of the workpiece, and the image preprocessing module is used for performing light unevenness correction, noise-removing filtering process and image enhancement to the shot surface images of the workpiece. The feature processing module is used for image crack segmentation, removal of mistaken segmentation point and crack feature extraction, and the statistical analysis module is used for performing crack warning and crack analysis and obtaining a crack detection report. The visual detection device monitors the microcracks on the surface of the workpiece based on machine vision, and can judge and identify the cracks on the surface of the workpiece after processing the images so as to realize automatic production application.
Description
Technical field
The utility model belongs to the automatic detection system technical field, is specifically related to a kind of surface of the work micro-crack vision inspection apparatus.
Background technology
The surface of the work Non-Destructive Testing is to be prerequisite not damage following purposes of tested workpiece and function, measures and estimate defective, and assessment integrality, performance and composition are measured geometric properties, and the detection that workpiece is carried out.Conventional surface of the work crack detection technology mainly contains: ray detection, EDDY CURRENT, magnetic detect.
First kind of gamma ray material testing (RT method) can be qualitative and quantitative to defective more intuitively, but the egative film long preservation.The method has been widely used in the check of boilers and pressure vessel pressure pipeline.But detect for micro-crack, but be subjected to the influence of the orientation of micro-crack own and the width and the degree of depth, all too many levels factors such as transillumination, darkroom processing in addition, its process are handled to be had improperly slightly, and the result will be got half the result with twice the effort, and detection sensitivity reduces, even can't detect.
Second kind is EDDY CURRENT, feeds alternating current for a coil, and the electric current that passes through under certain condition is constant.If near measured workpiece, in water, can induce eddy current to coil in the workpiece as ship, be subjected to vortes interference, coil current can change.Because whether the size of eddy current is with having defective and difference in the workpiece, so the size that coil current changes can reflect that zero defect is arranged.Coil does not need directly to contact with measured object during EDDY CURRENT, can carry out high speed detection, easily be automated, but not be suitable for complex-shaped part, and can only detect the surface and the near surface flaw of conductive material, testing result also is easy to be subjected to the interference of material itself and other factors.
The third is magnaflux (a MT method), fluorescence in magnetic powder inspection and the permeation flaw detection and non-fluorescence, and the mode that is to observe defective is different, is fluorescence method what black lamp (UV-lamp) was observed down, and that observes under daylight is non-fluorescence method.Under the same situation of observational technique, the advantage of magnetic powder inspection is highly sensitive, can detect the defective on surface and nearly surface, and shortcoming is to be used for ferrimagnet.The advantage of permeation flaw detection is to detect all imporosity materials, and shortcoming is that the defective that will detect must be buried defective and detect to come out at the surface of the work opening.
It is all will discern the surface of the work crackle by human eye that above-mentioned three kinds of methods all have a common shortcoming, is not easy to realize the automated production application.
The utility model content
The purpose of this utility model provides a kind of surface of the work micro-crack vision inspection apparatus, and it comes the monitoring workpiece crizzle based on machine vision, and can handle back judgement and identification surface of the work crackle to image, uses to realize automated production.
The technical scheme that the utility model adopted is, a kind of surface of the work micro-crack vision inspection apparatus, comprise the image collecting device that connects successively, the image pretreatment module, characteristic processing module and statistical analysis module, wherein, image collecting device is installed on the image acquisition platform and is used to take the surface of the work image, the surface of the work image that the image pretreatment module is used for that shooting is obtained carries out the inhomogeneous correction of light, noise-removed filtering is handled and the figure image intensifying, the characteristic processing module is used for the image crack segmentation, the mistake cut-point is removed and the crackle feature extraction, and statistical analysis module is used for crackle and reports to the police, analysis on cracks and draw crack detection report.
Wherein, the image acquisition platform comprises base, be installed with first sleeve on the base, on base and the inner chamber that is positioned at first sleeve be equipped with can axial rotation first leading screw, first sleeve and first leading screw are vertical direction and coaxial cable, the top of first leading screw is connected with and is used to control the first handle that this first leading screw rotates, being equipped with on first leading screw can be along its first screw that vertically moves when this first leading screw rotates, the outside of first sleeve is set with crossbeam, have vertical slots on the sidewall of first sleeve, first screw is connected by first screw with crossbeam, and first screw is positioned at vertical slots;
Be fixed with second sleeve on the crossbeam, the inner chamber of second sleeve is equipped with second leading screw of energy axial rotation, second leading screw and second sleeve are horizontal direction and coaxial cable, one end of second leading screw is connected with and is used to control the second handle that this second leading screw rotates, being equipped with on second leading screw can be along its second screw that moves horizontally when this second leading screw rotates, the outside of second sleeve is set with support, have the mounting hole that is used to install image collecting device on the support, have level trough on the sidewall of second sleeve, second screw is connected by second screw with support, and second screw is positioned at level trough.
Image collecting device comprises microscope, and the CCD camera that is positioned at relevant position, microscope top.
The beneficial effects of the utility model are, the judged result of surface of the work crackle need not artificial cognition, and its utilization and sighting device images acquired thereof are handled back judgement and identification surface of the work crackle automatically by software to image again, therefore, help improving the robotization of system.Image acquisition platform in the utility model drives two leading screws respectively by two handles and rotates, realize image collecting device up and down and move left and right, and can pass through crossbeam rotating relative to first sleeve, and support rotating relative to sleeve, can suitably regulate the position of image collecting device, so that the image of gathering is more clear.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the image acquisition platform in the utility model;
Fig. 3 is the A-A cut-open view of Fig. 2.
Wherein, 1. base, 2. first sleeve, 3. first leading screw, 4. first screw, 5. end cap, 6. first handle, 7. support, 8. mounting hole, 9. second sleeve, 10. crossbeam, 11. first screws, 12. vertical slots, 13. level troughs, 14. second leading screws, 15. second screw, 16. second handles, 17. image collecting devices, 18. the image pretreatment module, 19. characteristic processing modules, 20. statistical analysis modules.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
As Fig. 1, Fig. 2 and shown in Figure 3, a kind of surface of the work micro-crack of the utility model vision inspection apparatus, comprise the image collecting device 17 that connects successively, image pretreatment module 18, characteristic processing module 19 and statistical analysis module 20, wherein, image collecting device 17 is used to take the surface of the work image, the surface of the work image that image pretreatment module 18 is used for that shooting is obtained carries out the inhomogeneous correction of light, noise-removed filtering is handled and the figure image intensifying, characteristic processing module 19 is used for the image crack segmentation, the mistake cut-point is removed and the crackle feature extraction, and statistical analysis module 20 is used for crackle and reports to the police, analysis on cracks and draw crack detection report.
Image collecting device 17 comprises microscope, and the CCD camera that is positioned at this relevant position, microscope top.Image collecting device 17 is installed on the image acquisition platform, the image acquisition platform comprises base 1, be installed with first sleeve 2 on the base 1, on base 1, and the inner chamber that is positioned at first sleeve 2 is equipped with first leading screw 3, first leading screw, 3 energy axial rotation, first sleeve 2 and first leading screw 3 are vertical direction and coaxial cable, the top of first leading screw 3 is connected with first handle 6, first handle 6 is used to control this first leading screw 3 and rotates, in the inner chamber of first sleeve 2, and in that being installed on first leading screw 3, can when first leading screw 3 rotates, vertically move first screw, 4, the first screws 4 along first leading screw 3.The outside that the top of first sleeve 2 is provided with end cap 5, the first sleeves 2 is set with and has vertical slots 12, the first screws 4 on the sidewall of crossbeam 10, the first sleeves 2 and be connected by first screw 11 with crossbeam 10, and first screw 11 is positioned at vertical slots 12.
Be fixed with second sleeve 9 on the crossbeam 10, the inner chamber of second sleeve 9 is equipped with second leading screw 14, second leading screw, 14 energy axial rotation, second leading screw 14 and second sleeve 9 are horizontal direction and coaxial cable, one end of second leading screw 14 is connected with second handle 16, second handle 16 is used to control second leading screw 14 and rotates, in second sleeve 9, and second screw 15 is installed on second leading screw 14, second screw 15 can move horizontally along second leading screw 14 when second leading screw 14 rotates, the outside of second sleeve 9 is set with support 7, have mounting hole 8 on the support 7, image collecting device 17 can be fixing by mounting hole 8, have level trough 13, the second screws 15 on the sidewall of second sleeve 9 and be connected by second screw with support 7, second screw is positioned at level trough 13.
The course of work of the present utility model is: at first microscope and CCD camera are installed on the support 7 by mounting hole 8, rotate relative to second sleeve 9 relative to the rotating of first sleeve 2, support 7 by regulating first handle 6, second handle 16, crossbeam 10 again, make microscope and the relative position of the workpiece that is taken suitable; Use microscope and CCD camera to take the surface of the work image, the surface of the work image that 18 pairs of shootings of image pretreatment module obtain carries out the inhomogeneous correction of light, noise-removed filtering is handled and the figure image intensifying, then characteristic processing module 19 is carried out the image crack segmentation, the mistake cut-point is removed and the crackle feature extraction, last statistical analysis module 20 has judged whether crackle, if flawless then stop; Judging has crackle, then sends crackle and reports to the police, and the crackle feature is added up, and prints the crackle statistical report.
Claims (3)
1. surface of the work micro-crack vision inspection apparatus, it is characterized in that, comprise the image collecting device (17) that connects successively, image pretreatment module (18), characteristic processing module (19) and statistical analysis module (20), wherein, described image collecting device (17) is installed on the image acquisition platform and is used to take the surface of the work image, the surface of the work image that described image pretreatment module (18) is used for that shooting is obtained carries out the inhomogeneous correction of light, noise-removed filtering is handled and the figure image intensifying, described characteristic processing module (19) is used for the image crack segmentation, the mistake cut-point is removed and the crackle feature extraction, and described statistical analysis module (20) is used for crackle and reports to the police, analysis on cracks and draw crack detection report.
2. according to the described surface of the work micro-crack of claim 1 vision inspection apparatus, it is characterized in that, described image acquisition platform comprises base (1), be installed with first sleeve (2) on the described base (1), base (1) go up and the inner chamber that is positioned at described first sleeve (2) be equipped with can axial rotation first leading screw (3), described first sleeve (2) and first leading screw (3) are vertical direction and coaxial cable, the top of described first leading screw (3) is connected with and is used to control the first handle (6) that this first leading screw (3) rotates, being equipped with on described first leading screw (3) can be along its first screw (4) that vertically moves when this first leading screw (3) rotates, the outside of described first sleeve (2) is set with crossbeam (10), have vertical slots (12) on the sidewall of described first sleeve (2), described first screw (4) is connected by first screw (11) with crossbeam (10), and described first screw (11) is positioned at described vertical slots (12);
Be fixed with second sleeve (9) on the described crossbeam (10), the inner chamber of described second sleeve (9) is equipped with second leading screw (14) of energy axial rotation, described second leading screw (14) and second sleeve (9) are horizontal direction and coaxial cable, one end of described second leading screw (14) is connected with and is used to control the second handle (16) that this second leading screw (14) rotates, being equipped with on described second leading screw (14) can be along its second screw (15) that moves horizontally when this second leading screw (14) rotates, the outside of described second sleeve (9) is set with support (7), have the mounting hole (8) that is used to install image collecting device (17) on the described support (7), have level trough (13) on the sidewall of described second sleeve (9), described second screw (15) is connected by second screw with described support (7), and described second screw is positioned at described level trough (13).
3. according to claim 1 or 2 described surface of the work micro-crack vision inspection apparatus, it is characterized in that described image collecting device (17) comprises microscope, and the CCD camera that is positioned at relevant position, described microscope top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201354908U CN202075755U (en) | 2011-05-03 | 2011-05-03 | Visual detection device for microcracks on surface of workpiece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201354908U CN202075755U (en) | 2011-05-03 | 2011-05-03 | Visual detection device for microcracks on surface of workpiece |
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| CN202075755U true CN202075755U (en) | 2011-12-14 |
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| CN2011201354908U Expired - Fee Related CN202075755U (en) | 2011-05-03 | 2011-05-03 | Visual detection device for microcracks on surface of workpiece |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721701A (en) * | 2012-07-03 | 2012-10-10 | 山东理工大学 | Light transmission scanning detection device for ceramic antenna housing |
| CN103487443A (en) * | 2013-10-11 | 2014-01-01 | 福州大学 | Electromagnetic induction thermal excitation method based pipeline defect infrared detection system |
| CN103593668A (en) * | 2013-11-14 | 2014-02-19 | 昆明理工大学 | Automatic crack identification method in metal plate stamping connector mechanical property test |
| CN105290184A (en) * | 2015-11-28 | 2016-02-03 | 谭华 | Sheet metal stamping device |
| CN105344781A (en) * | 2015-11-28 | 2016-02-24 | 谭华 | Stamping device based on crack detection |
| CN106645181A (en) * | 2017-02-24 | 2017-05-10 | 清华大学 | Microscopic vision-based roller grinding surface defect detecting system |
| CN107490582A (en) * | 2017-09-20 | 2017-12-19 | 深圳市晟达机械设计有限公司 | A kind of streamline Work Piece Verification System Based |
| CN107991307A (en) * | 2017-08-28 | 2018-05-04 | 中国人民解放军总后勤部油料研究所 | A kind of soft material face crack automatic detection device and method |
| CN109507112A (en) * | 2018-12-17 | 2019-03-22 | 大连崇达电路有限公司 | A kind of gear drive unit of high-accuracy printed wiring board appearance quality detecting device |
| CN109507113A (en) * | 2018-12-20 | 2019-03-22 | 大连崇达电路有限公司 | High-precision printed wiring board appearance detection image collection unit mobile device |
| CN110044925A (en) * | 2019-05-21 | 2019-07-23 | 上海黑塞智能科技有限公司 | A kind of orthotropic steel box girder crosses welding hole crackle long term monitoring device |
| CN111402190A (en) * | 2018-12-28 | 2020-07-10 | 上海尤图智能科技有限公司 | Image processing device and system for wire rod on-line detection |
| CN111932528A (en) * | 2020-09-07 | 2020-11-13 | 广东明华机械有限公司 | Torpedo quality detection method and system based on visual identification |
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2011
- 2011-05-03 CN CN2011201354908U patent/CN202075755U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721701A (en) * | 2012-07-03 | 2012-10-10 | 山东理工大学 | Light transmission scanning detection device for ceramic antenna housing |
| CN103487443A (en) * | 2013-10-11 | 2014-01-01 | 福州大学 | Electromagnetic induction thermal excitation method based pipeline defect infrared detection system |
| CN103487443B (en) * | 2013-10-11 | 2015-10-14 | 福州大学 | A kind of defect of pipeline infrared detection system based on electromagnetic induction thermal excitation method |
| CN103593668A (en) * | 2013-11-14 | 2014-02-19 | 昆明理工大学 | Automatic crack identification method in metal plate stamping connector mechanical property test |
| CN103593668B (en) * | 2013-11-14 | 2017-02-08 | 昆明理工大学 | Automatic crack identification method in metal plate stamping connector mechanical property test |
| CN105290184A (en) * | 2015-11-28 | 2016-02-03 | 谭华 | Sheet metal stamping device |
| CN105344781A (en) * | 2015-11-28 | 2016-02-24 | 谭华 | Stamping device based on crack detection |
| CN106645181A (en) * | 2017-02-24 | 2017-05-10 | 清华大学 | Microscopic vision-based roller grinding surface defect detecting system |
| CN107991307B (en) * | 2017-08-28 | 2020-04-28 | 中国人民解放军总后勤部油料研究所 | Automatic detection device and method for surface cracks of soft material |
| CN107991307A (en) * | 2017-08-28 | 2018-05-04 | 中国人民解放军总后勤部油料研究所 | A kind of soft material face crack automatic detection device and method |
| CN107490582A (en) * | 2017-09-20 | 2017-12-19 | 深圳市晟达机械设计有限公司 | A kind of streamline Work Piece Verification System Based |
| CN109507112A (en) * | 2018-12-17 | 2019-03-22 | 大连崇达电路有限公司 | A kind of gear drive unit of high-accuracy printed wiring board appearance quality detecting device |
| CN109507113A (en) * | 2018-12-20 | 2019-03-22 | 大连崇达电路有限公司 | High-precision printed wiring board appearance detection image collection unit mobile device |
| CN111402190A (en) * | 2018-12-28 | 2020-07-10 | 上海尤图智能科技有限公司 | Image processing device and system for wire rod on-line detection |
| CN111402190B (en) * | 2018-12-28 | 2023-06-09 | 上海尤图智能科技有限公司 | Image processing device and system for wire rod on-line detection |
| CN110044925A (en) * | 2019-05-21 | 2019-07-23 | 上海黑塞智能科技有限公司 | A kind of orthotropic steel box girder crosses welding hole crackle long term monitoring device |
| CN111932528A (en) * | 2020-09-07 | 2020-11-13 | 广东明华机械有限公司 | Torpedo quality detection method and system based on visual identification |
| CN111932528B (en) * | 2020-09-07 | 2021-02-19 | 广东明华机械有限公司 | Torpedo quality detection method and system based on visual identification |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20140503 |