CN104439695A - Visual detector of laser machining system - Google Patents
Visual detector of laser machining system Download PDFInfo
- Publication number
- CN104439695A CN104439695A CN201310422766.4A CN201310422766A CN104439695A CN 104439695 A CN104439695 A CN 104439695A CN 201310422766 A CN201310422766 A CN 201310422766A CN 104439695 A CN104439695 A CN 104439695A
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- laser
- laser processing
- light source
- laser machining
- light
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
Abstract
The invention is applicable to the technical field of laser machining, and particularly relates to a visual detector of a laser machining system. The visual detector comprises an image acquiring system, a lighting source and a reflecting mirror, wherein the image acquiring system is used for acquiring images of laser machining objects on a laser machining plane, the lighting source is used for increasing luminance of the laser machining object on the laser machining plane, and the reflecting mirror is used for reflecting light emitted from the lighting source, so that the laser machining object on the laser machining plane can be imaged to the image acquiring system. The reflecting mirror is arranged between a focusing lens of the laser machining system and the machining plane, and the reflecting mirror can reflect images of the laser machining object to the image acquiring system. Meanwhile, a coaxial light source and an annular light source are arranged in front of the image acquiring device, so that the luminance of the laser machining object can be increased, real-time visual detection of the laser machining object can be realized.
Description
Technical field
The invention belongs to laser work detection technique field, particularly relate to a kind of vision inspection apparatus of laser-processing system.
Background technology
Present electronic product much all needs to be marked by laser, along with the demand using laser to carry out marking is increasing, the demand of user to laser marking machine is increasing, simultaneously also more and more higher to the requirement of laser marking machine, if adopt the laser marking machine containing laser vision system to carry out operation aborning, automatic location can be realized owing to there being the laser marking machine of laser vision system, automatic focusing and automatically detect thus obtain more user approval, the vision inspection apparatus of the laser marking machine of existing laser vision system mainly contains two kinds of modes: adopt coaxial vision inspection apparatus, mark square toes are identical with the light path of imaging system, this mode can monitor mark quality in real time, laser scanning head and camera can carry out mark simultaneously and take pictures, mark on one side can be realized while observe, but coaxial vision inspection apparatus accuracy of detection is inadequate, the problem of Large visual angle blur-free imaging cannot be met, another mode is the vision inspection apparatus adopting paraxonic, camera and mark square toes have a certain degree.This patten's design is simple, does not need to change existing mark square head structure, but, after laser scanning head mark, need the workpiece after by mark to move to camera position and take pictures, can not detect in real time, and need to demarcate relative position in advance.Based on the requirement of laser marking field to cost, and the requirement to mark precision and production efficiency, laser marking machine is at flexibility and full-automatic property Challenge.
Summary of the invention
The object of the embodiment of the present invention is the vision inspection apparatus providing a kind of laser-processing system, by arranging a speculum in the middle of laser-processing system focus lamp and laser processing plane, by speculum, the image of Laser Processing object is reflexed to image capturing system, simultaneously by arranging a coaxial light source and the annular light source that arranges below speculum carries out brightness enhancing to Laser Processing object before image collecting device, realize detecting the real-time vision of Laser Processing object.
The embodiment of the present invention is achieved in that a kind of vision inspection apparatus of laser-processing system, and described device comprises:
Image capturing system, for gathering the image of the Laser Processing object on laser processing plane;
Lighting source, for highlighting to the Laser Processing object on laser processing plane;
Speculum, reflects for the illumination light sent lighting source, makes Laser Processing image objects on laser processing plane to image capturing system.
Further, described speculum and laser processing plane angle at 45 °.
Further, described lighting source comprises:
Coaxial light source and/or annular light source, before wherein coaxial light source is placed in image capturing system, under annular light source is placed in speculum.
Further, described speculum is to laser total transmissivity.
Further, described speculum is totally reflected illumination light.
Further, described annular light source comprises multiple strip light, is highlighted to the Laser Processing object on laser processing plane by multiple strip light looping light source.
Further, in described strip light, be provided with rotating shaft, each strip light can be regulated to irradiate the angle of Laser Processing object by rotating shaft.
Further, in described strip light, be provided with slide block, the distance of strip light apart from annular light source center can be changed by sliding slider.
The embodiment of the present invention is by a kind of vision inspection apparatus of laser-processing system, by increasing by a speculum in laser-processing system, speculum is totally reflected selected axis light and ring light laser total transmissivity, the plane be simultaneously totally reflected through speculum at laser processing plane arranges a coaxial light source and image capturing system, image capturing system gathers the Laser Processing subject image on laser processing plane, and coaxial light source carries out brightness enhancing to Laser Processing object.
Accompanying drawing explanation
Fig. 1 is the vision inspection apparatus schematic diagram of a kind of laser-processing system that first embodiment of the invention provides;
Fig. 2 is the top view of the annular light source that first embodiment of the invention provides;
Fig. 3 is the upward view of the annular light source that first embodiment of the invention provides;
Fig. 4 is the schematic diagram of the vision inspection apparatus of a kind of laser-processing system that second embodiment of the invention provides;
Fig. 5 is the picture of the processing stand collected that second embodiment of the invention provides;
Fig. 6 is the picture of the processing stand after image procossing that second embodiment of the invention provides;
Fig. 7 is the testing result of the processing stand that second embodiment of the invention provides.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Below in conjunction with specific embodiment, specific implementation of the present invention is described in detail:
embodiment one:
Fig. 1 shows the vision inspection apparatus schematic diagram of a kind of laser-processing system that first embodiment of the invention provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.
Laser-processing system comprises laser instrument, laser head, focus lamp and laser processing plane.By increasing a speculum, image capturing system, lighting source in laser-processing system, wherein lighting source specifically comprises: coaxial light source, annular light source, and wherein image capturing system specifically comprises: camera lens and camera; By camera lens and collected by camera image information clearly, composing images acquisition system.In concrete enforcement, laser head is used for Emission Lasers, and focus lamp is for carrying out Laser Processing by laser beam focus to the Laser Processing object on laser processing plane, and concrete processing can comprise mark cutting.Image capturing system, for gathering the image of the Laser Processing object on laser processing plane, processing effect during Laser Processing is carried out in real-time detection, wherein added to Laser Processing object man-hour, by coaxial light source and/or annular light source, the Laser Processing object on laser processing plane is highlighted, before wherein coaxial light source is placed in image capturing system, annular light source is specifically arranged at below speculum, the top view of annular light source as shown in Figure 2, a slide block is provided with in each strip light of annular light source, the distance of strip light relative to annular light source center can be changed by sliding slider.When being made strip light survey mobile outside annular light source by sliding slider, the width of annular light source increases, now can increase the irradiated area of whole annular light source, when being made strip light survey mobile in annular light source by sliding slider, the broadband of annular light source reduces, and now can reduce the irradiated area of whole annular light source.Wherein the width of strip light can be arranged according to concrete environment for use.By the broadband of strip light can be lived by partial occlusion during skid strip light.The upward view of annular light source as shown in Figure 3, annular light source forms employing four strip light in the embodiment of the present invention by multiple strip source, wherein four strip light can adjust according to the concrete condition of Laser Processing object the angle that four strip light irradiate Laser Processing object, as shown in Figure 3, strip light can also make to increase with the width changing strip light by inwardly outer translation and reduce the light-struck area of bar shaped.Coaxial light source is coaxial with image capturing system, before coaxial light source is placed in image capturing system, the light that coaxial light source sends passes through speculum vertical irradiation on laser processing plane, brightness enhancing is carried out to the Laser Processing object on laser processing plane, the object of Laser Processing simultaneously reflects the light that light source sends, light after reflection is back to coaxial light source by speculum, through after coaxial light source in image capturing system imaging.By arranging two light sources, brightness enhancing is carried out to Laser Processing object, after image capturing system being coaxially placed in axis light simultaneously, be convenient to carry out IMAQ to Laser Processing object, to make when by Laser Processing, vision-based detection is carried out to Laser Processing object, angle wherein between speculum and laser processing plane preferably adopts the angle of 45 °, certainly only need ensure that coaxial light-struck light can be radiated on laser processing plane through speculum here, the light of the Laser Processing reflections off objects on laser processing plane can be irradiated to the image capturing system coaxial with axis light after speculum reflection, ensure that speculum projects entirely to laser to be totally reflected lighting source simultaneously.Angle between speculum and laser processing plane can be arranged according to the concrete speculum material of employing and the plated film situation of speculum.
The embodiment of the present invention by the way, a kind of vision inspection apparatus of laser-processing system, by setting up a speculum in the middle of the focus lamp and laser processing plane of laser-processing system, speculum can total transmissivity laser, but total reflection lighting source and axis light and the photoemissive light for strengthening Laser Processing object brightness of annular, after wherein image capturing system is placed in axis light, by the brightness of enhancing and the minute surface total reflection of speculum, image capturing system can acquire the image of the Laser Processing object of a Large visual angle, a good image of imaging effect can be obtained by the minute surface total reflection of speculum simultaneously, and can in real time detection laser processing processing effect, be convenient to control, achieve the real-time monitoring to Laser Processing object and detection, simultaneously with the use of the system of automation, the automation processing of whole system can be realized, and high accuracy and high accuracy can be reached.
embodiment two:
Fig. 4 shows the schematic diagram of the vision inspection apparatus of a kind of laser-processing system that second embodiment of the invention provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.
In concrete implementation process, first testing laser processing object whether can on image capturing system blur-free imaging, ensure coaxial light source and the uniform illumination of annular light source on laser processing plane.Wherein annular light source can change the angle of the polishing of each strip light by the rotating shaft of strip light each in rotary annular light source, and then change the irradiating angle of whole ring light, and the strip light width between each ring light by the sliding slider inwardly outer mobile width changing whole annular light source, can increase or reduce the light-struck area of whole annular by the width changing whole annular light source.Laser is focused by laser after focus lamp process after X, Y speculum of processing head, processes Laser Processing object.Wherein speculum is whole transmissions to laser, and the ring light that the axis light of launch coaxial light source and annular light source are launched is total reflection.When the surface of Laser Processing object is very coarse time, preferred employing ring light illumination, when the surface of Laser Processing object very smooth and very high to the reflectivity of light time, preferably adopt axis light illumination, ring light and axis light can also be used when light is poor simultaneously simultaneously to throw light on.Axis light or ring light impinge upon on Laser Processing object, on image capturing system, finally collect the image of Laser Processing object through speculum reflection, can collect image clearly by mirror mirror reflection.Image procossing is carried out to the image that image capturing system gets, testing result is shown over the display.Owing to have employed ring light and axis light to Laser Processing object illumination, strengthen the brightness of Laser Processing object, the imaging effect of fine definition can be obtained, collected the manuscript picture of clear and Large visual angle by image capturing system after, then the vision-based detection realized the processing effect of Laser Processing object will be analyzed by image procossing.
Wherein the process of image procossing carried out to Laser Processing object as follows, after having acquired real processing result, by image display in systems in which, and the image of display is contrasted with the image preset, whether the position of the processing of comparison is simultaneously the Working position pre-set, advanced line position judges, can adopt before process the mode of position judgment, the position of image to machine component of system acquisition machine component is determined, namely by the mode determination position coordinates of image tagged, after processing through processing, just can find the position of correct processing.
After completing time processing, three-dimensional measurement being carried out to the result of processing, by processing the image collected, three-dimensional measurement being carried out to object, be i.e. the coordinate of each location point of marking objects and the three-dimensional height of each point.By processing automatic focusing, the height of each point of the object after three-dimensional measurement is utilized to realize the automatic focusing of processing.Complete the processing of automation.Wherein the implementation procedure of automatic focusing is: mobile image acquisition system photographs a series of images, obtain the sequence image of label, utilize the information that in the mode abstraction sequence image of image procossing, each image comprises, obtain the three-dimensional information of marking objects, utilize the elevation information in three-dimensional information, carry out the automatic adjustment of focal length.For processing stand, processing effect is monitored in real time and detects.Fig. 5 is the picture of the processing stand collected, and Fig. 6 is through the picture of the processing stand after image procossing, and Fig. 7 is the testing result of processing stand.By the vision inspection apparatus of laser-processing system, vision-based detection is carried out to Laser Processing object, processing machine can carry out different functions to Laser Processing object image processing process according to the requirement of user can be realized.
The embodiment of the present invention by the way, a kind of vision inspection apparatus of laser-processing system, a speculum is set up by processing in laser-processing system in the middle of square toes and plane up to standard, by control system for processing, object is processed, by image capturing system processing effect monitored in real time and detect, the image collected is carried out image procossing by image processing software, realizes the real-time monitoring to processing effect and detection.Whole system achieves the automation of processing, and improves the precision of processing and the degree of accuracy of processing.
In order to make object of the present invention, technical scheme clearer, in conjunction with the accompanying drawings and embodiments above, to invention has been detailed description, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deductions and replacement can also be made, all should be considered as protection scope of the present invention.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a vision inspection apparatus for laser-processing system, is characterized in that, described device comprises:
Image capturing system, for gathering the image of the Laser Processing object on laser processing plane;
Lighting source, for highlighting to the Laser Processing object on laser processing plane;
Speculum, reflects for the illumination light sent lighting source, makes Laser Processing image objects on laser processing plane to image capturing system.
2. device as claimed in claim 1, is characterized in that, described speculum and laser processing plane angle at 45 °.
3. device as claimed in claim 1, it is characterized in that, described lighting source comprises:
Coaxial light source and/or annular light source, before wherein coaxial light source is placed in image capturing system, under annular light source is placed in speculum.
4. device as claimed in claim 1, it is characterized in that, described speculum is to laser total transmissivity.
5. device as claimed in claim 1, it is characterized in that, described speculum is totally reflected illumination light.
6. device as claimed in claim 3, it is characterized in that, described annular light source comprises multiple strip light, is highlighted to the Laser Processing object on laser processing plane by multiple strip light looping light source.
7. device as claimed in claim 6, is characterized in that, be provided with rotating shaft in described strip light, each strip light can be regulated to irradiate the angle of Laser Processing object by rotating shaft.
8. device as claimed in claim 6, is characterized in that, be provided with slide block in described strip light, can change the distance of strip light apart from annular light source center by sliding slider.
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| CN105128539A (en) * | 2015-09-21 | 2015-12-09 | 大族激光科技产业集团股份有限公司 | Optical projection laser marking method and laser marking system |
| CN106041325A (en) * | 2016-07-05 | 2016-10-26 | 潍坊路加精工有限公司 | Laser drilling method |
| CN106442327A (en) * | 2016-12-08 | 2017-02-22 | 苏州德创测控科技有限公司 | Optical system for detecting side image information of object |
| CN106735864A (en) * | 2016-12-22 | 2017-05-31 | 温州大学 | The vibration mirror scanning laser processing and device of coaxial real-time detection |
| CN106851182A (en) * | 2015-12-04 | 2017-06-13 | 彭翔 | The intelligent visual surveillance system of laser-processing system |
| CN107790895A (en) * | 2017-11-01 | 2018-03-13 | 中国振华(集团)新云电子元器件有限责任公司(国营第四三二六厂) | The cutter device and its cutting method of electrode foil |
| CN108303236A (en) * | 2017-01-11 | 2018-07-20 | 福建省莆田市中涵机动力有限公司 | Laser scanning head installs calibration check system |
| CN108406124A (en) * | 2018-03-28 | 2018-08-17 | 歌尔股份有限公司 | A kind of laser index carving method and system |
| CN109714899A (en) * | 2019-01-29 | 2019-05-03 | 大族激光科技产业集团股份有限公司 | Target identification device, PCB hole-drilling system and PCB boring method |
| CN109738434A (en) * | 2018-12-03 | 2019-05-10 | 珠海迈超智能装备有限公司 | A kind of glass detection device |
| CN110280864A (en) * | 2019-06-24 | 2019-09-27 | 大连理工大学 | A kind of band effectively controls and the automatic soldering device of vision positioning |
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| CN111070907A (en) * | 2020-01-06 | 2020-04-28 | 珠海格力智能装备有限公司 | Marking detection equipment |
| CN111093886A (en) * | 2017-09-11 | 2020-05-01 | 松下知识产权经营株式会社 | Laser processing head, optical fiber inspection device, and optical fiber inspection method |
| CN111766690A (en) * | 2020-07-24 | 2020-10-13 | 苏州天准科技股份有限公司 | Alignment imaging equipment and laser direct imaging system |
| CN112044870A (en) * | 2020-07-15 | 2020-12-08 | 中国科学院西安光学精密机械研究所 | Laser cleaning method and device based on coaxial ranging and real-time adjustable focal length |
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| CN105128539A (en) * | 2015-09-21 | 2015-12-09 | 大族激光科技产业集团股份有限公司 | Optical projection laser marking method and laser marking system |
| CN106851182A (en) * | 2015-12-04 | 2017-06-13 | 彭翔 | The intelligent visual surveillance system of laser-processing system |
| CN106041325A (en) * | 2016-07-05 | 2016-10-26 | 潍坊路加精工有限公司 | Laser drilling method |
| CN106442327A (en) * | 2016-12-08 | 2017-02-22 | 苏州德创测控科技有限公司 | Optical system for detecting side image information of object |
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| CN108303236A (en) * | 2017-01-11 | 2018-07-20 | 福建省莆田市中涵机动力有限公司 | Laser scanning head installs calibration check system |
| CN111093886A (en) * | 2017-09-11 | 2020-05-01 | 松下知识产权经营株式会社 | Laser processing head, optical fiber inspection device, and optical fiber inspection method |
| CN107790895A (en) * | 2017-11-01 | 2018-03-13 | 中国振华(集团)新云电子元器件有限责任公司(国营第四三二六厂) | The cutter device and its cutting method of electrode foil |
| CN108406124A (en) * | 2018-03-28 | 2018-08-17 | 歌尔股份有限公司 | A kind of laser index carving method and system |
| CN109738434A (en) * | 2018-12-03 | 2019-05-10 | 珠海迈超智能装备有限公司 | A kind of glass detection device |
| CN109714899B (en) * | 2019-01-29 | 2021-01-01 | 深圳市大族数控科技有限公司 | Target recognition device, PCB drilling system and PCB drilling method |
| CN109714899A (en) * | 2019-01-29 | 2019-05-03 | 大族激光科技产业集团股份有限公司 | Target identification device, PCB hole-drilling system and PCB boring method |
| CN110280864A (en) * | 2019-06-24 | 2019-09-27 | 大连理工大学 | A kind of band effectively controls and the automatic soldering device of vision positioning |
| CN110280864B (en) * | 2019-06-24 | 2021-08-06 | 大连理工大学 | Automatic welding device with force control and visual positioning functions |
| CN111014868A (en) * | 2019-12-28 | 2020-04-17 | 武汉比天科技有限责任公司 | Welding method of tin ball welding device |
| CN111014868B (en) * | 2019-12-28 | 2021-04-27 | 武汉比天科技有限责任公司 | Welding method of tin ball welding device |
| CN111070907A (en) * | 2020-01-06 | 2020-04-28 | 珠海格力智能装备有限公司 | Marking detection equipment |
| CN111070907B (en) * | 2020-01-06 | 2021-05-28 | 珠海格力智能装备有限公司 | Marking detection equipment |
| CN112044870A (en) * | 2020-07-15 | 2020-12-08 | 中国科学院西安光学精密机械研究所 | Laser cleaning method and device based on coaxial ranging and real-time adjustable focal length |
| CN111766690A (en) * | 2020-07-24 | 2020-10-13 | 苏州天准科技股份有限公司 | Alignment imaging equipment and laser direct imaging system |
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