CN107202677B - Retainer front and back sides recognition methods based on the illumination of double LED light - Google Patents
Retainer front and back sides recognition methods based on the illumination of double LED light Download PDFInfo
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- CN107202677B CN107202677B CN201710260516.3A CN201710260516A CN107202677B CN 107202677 B CN107202677 B CN 107202677B CN 201710260516 A CN201710260516 A CN 201710260516A CN 107202677 B CN107202677 B CN 107202677B
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- led light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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Abstract
The invention discloses a kind of retainer front and back sides recognition methods based on the illumination of double LED light, illuminations are provided using two groups of LED light, image taking is carried out using camera, when shooting, end face identification LED light and chamfering identification LED light are lighted simultaneously, and control camera shoots picture；The picture is compared with normal pictures, is compared by the difference of maximum outer profile and normal pictures maximum outer profile, judges the front and back sides of the end face on retainer.The interference that the present invention effectively prevent image speck caused by workpiece and tooling surface reflection to identify feature, while requirement of the image recognition to light source is also effectively reduced, and reduce influence of the scattering of light to picture quality, to effectively prevent from judging by accident.
Description
Technical field
The present invention relates to machine components detection device technical fields, more specifically, more particularly to a kind of based on double LED light
The retainer front and back sides recognition methods of illumination.
Background technique
Retainer partly wraps up all or part of rolling element, and moves therewith, to separation roller, guides rolling element
And it holds it in bearing.There is the retainer in the equipment of higher rotation speed for automotive trannsmission system etc., for size essence
The requirement of degree is very high.In process of production if dimensional accuracy is not up to standard, the face of being installed on vehicle will lead to keep retainer
The inordinate wear of frame, the problems such as influencing cage service life or traffic safety.Retainer mentioned by the present invention refer to by
The surfaces externally and internally formed after turning is spherical surface, and both ends are the metal component of plane, one in existing retainer processing technology
As be by manually differentiating front and back sides by mechanical measurement to retainer, then guarantee to carry out down one manufacturing procedure when
It waits, these retainers can enter in process equipment according to the same direction.It is produced in practice large batch of, on the one hand, by
In heavy workload, labor intensity is very high, and it is positive and negative to cut retainer it is possible that the case where failing to judge or differentiating fault for artificial cognition
Face difference is not that cannot accurately determine the front and back sides of retainer it is obvious that if the precision of measuring tool is not high enough,
The accurate differentiation rate of each the retainer front and back sides differentiated is not can guarantee exactly.
Number of patent application is that the Chinese invention of CN2015102506173 discloses a kind of retainer front and back sides discriminating gear,
The width that retainer center hole chamfering is shot by camera, when camera central axis is horizontal by 45 degree of angles,
The fillet surface of retainer center hole is just vertical with camera, and the chamfering width of camera shooting at this time is developed width,
Can determine whether the front and back sides of retainer compared with benchmark chamfering width according to the chamfering width taken at this time, identification effect is high,
Reduce the problem that artificial cognition error is big, identification effect is low.But in actual pilot production, it has been found that the program is deposited
In following problem:
1) due to the size for being inner chamfer of the positive and negative region feature of retainer, it is necessary to realize that chamfer image is clapped by 45 degree of light sources
Take the photograph realization image procossing；But chamfering is shot to the more demanding of light source, the retainer smaller for some chamferings, shooting
Image annulus is very narrow, it is easy to the case where judging by accident；
2) retainer has many greasy dirt stations on the surface of retainer during production process and automatic charging
And at the chamfering of retainer, there is unsharp situation so as to cause the image shot, it is serious to result even in annulus
Image fracture, so as to cause the situation of image recognition mistake；
3) require have lower cost when the production link due to equipment application, retainer is made up of cylinder and pneumatic clamper
Gripper crawl be put into camera in the following, a manipulator can adapt to the holding of different-diameter as much as possible again simultaneously
Frame, therefore it is easy to cause the positioning accuracy of retainer low, retainer, which is likely to occur angular deflection after being crawled, causes light source to reflect
The unstable situation of intensity, to influence the quality of image；
4) retainer may be such that the center of circle of outer circle and inner circle is not exclusively overlapped due to processing itself, only take in annulus
One section carry out know method for distinguishing cannot use, it is necessary to whole image is identified；In view of the cost factor of camera, in reality
The very high camera of resolution ratio can not be taken in the production process of border, therefore also brings difficulty to image recognition.
Simultaneously as whole system is very high to the reliability requirement of image recognition, absolutely not go out in permission production process
The case where now judging by accident, it is necessary to reduce the quantity of suspicious product, therefore the equipment can not well adapt to actual production process.
Summary of the invention
It is an object of the invention to solve the problem above-mentioned, proposing one kind can be avoided erroneous judgement, and it is positive and negative to improve retainer
The retainer front and back sides recognition methods based on the illumination of double LED light of face discrimination precision.
The present invention is through the following technical solutions to achieve the above objectives: the retainer front and back sides based on the illumination of double LED light are known
Other method provides illumination using two groups of LED light, carries out image taking using camera, two groups of LED light are respectively end face identification
LED light and chamfering identify that LED light, two groups of LED light are annularly arranged, end face identification LED light is arranged in chamfering identification LED light
Surface, the surface of end face identification LED light is arranged in camera, and the axial line of camera and end face identify LED light and fall
The axial line of angle identification LED light is located on the same line；End face identification LED light includes the first lampshade of annular, setting the
First point light source of the ring shape on one lampshade, the reflector that the first lampshade bottom is arranged in and setting are in the first point light source
Outside and the filter being fixed on the first lampshade；The chamfering identification LED light includes the second lampshade of annular, is arranged second
Second point light source of the ring shape on lampshade is arranged in inside lampshade and issues the second point light source inside the second lampshade
Light reflect 45 degree angle vertical irradiations to retainer chamfering on reflective side, the second lampshade block chamfering identify LED light light
Line shines directly on the reflector of the lampshade bottom of end face identification LED light, prevents the light of chamfering identification LED from knowing by end face
The reflector of other LED light bottom, which is emitted to workpiece surface, leads to the luminous shooting for interfering with chamfering picture in retainer end face；
When shooting, end face is identified that LED light and chamfering identification LED light are lighted simultaneously first, camera is controlled and shoots the
One group of picture turns off chamfering and identifies that LED light or end face identify one in LED light, and control camera shoots the second group picture
Piece removes in first group of picture and owns with second group of picture in a computer by first group of picture and second group of picture comparison
Identical pixel obtains that treated picture compares the normal pictures of treated picture and the standard component obtained in advance
Compared with whether the edge of judgement treated picture and the profile of normal pictures are in ± n pixel, if judging result is in ± n
In a pixel, then it is assumed that should treated that picture can be used as the standard for judging retainer front and back sides, and thus judge to protect
Holding frame and being now placed in the end face of top is front or reverse side；If judging result is not in ± n pixel, without judgement
As a result, in turn carry out retainer itself whether He Ge detection.
Further, the normal pictures of the standard component are equipped with four altogether, only open when respectively standard component is face-up
Photo, the standard component of end face identification LED light shooting only open photo, the standard component of chamfering identification LED light shooting when face-up
Reverse side upward when only open end face identification LED light shooting photo and standard component reverse side upward when only open chamfering identification LED light
The photo of shooting, treated picture and the standard component front if being chamfering identification LED light closed when shooting second group of picture
Only opened when upward end face identification LED light shooting photo and standard component reverse side upward when only open end face identification LED light shooting
Photo compare；Treated picture and the standard component if being end face identification LED light closed when shooting second group of picture
The photo and standard component reverse side that chamfering identification LED light shooting is only opened when face-up upward when only open chamfering identification LED light
The photo of shooting compares.
Further, the n is accuracy rating, and numerical value is determined by the resolution ratio of used camera.
The beneficial effects of the present invention are:
1, the present invention shoots two groups of pictures using one group of camera, and carrying out differential technique using two kinds of pictures, treated
Picture is compared with normal pictures, will not be had an impact mutually when not only shooting, but also due to comparing two factors, energy simultaneously
Largely improve the accuracy of front and back sides judgement.
2, the present invention using treated at end picture and the outer profile of normal pictures whether in ± n pixel and with this
The comparison of treated picture and the outer profile of normal pictures is as judgment method, the judgment method and the single figure of conventional dependence
The mode identified as feature is significantly improved, and single picture can be effectively prevent due to light source or environmental disturbances factor
Caused by identification mistake so as to cause seriously endangering the case where.
3, the present invention is arranged up and down using two groups of LED light, and the second lampshade blocks the light direct irradiation of chamfering identification LED light
On the reflector for identifying the lampshade bottom of LED light to end face, so that effectivelying prevent the reflector of end face identification LED light bottom will fall
Angle identification LED lamplight light is reflected into light surface, and retainer end face caused by preventing with this is reflective to lead to chamfering picture shooting
Accuracy.
Detailed description of the invention
Fig. 1 is that the present invention is based on the structural representations of the used device of retainer front and back sides recognition methods of double LED light illumination
Figure.
Fig. 2 is the structural schematic diagram of identification LED light in end face of the present invention.
Fig. 3 is the structural schematic diagram of chamfering identification LED light of the present invention.
In figure, 1- retainer, 2- chamfering identification LED light, the end face 3- identify LED light, 4- camera, the first lampshade of 5-, 6-
First point light source, 7- reflector, 8- filter, the second lampshade of 9-, the second point light source of 10-, the reflective side 11-.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
As shown in Fig. 1 ~ 3, a kind of retainer front and back sides recognition methods based on the illumination of double LED light is mentioned using two groups of LED light
For illumination, image taking is carried out using camera 4, two groups of LED light are respectively that end face identification LED light 3 and chamfering identify LED light 2,
Two groups of LED light annularly arrange that end face identification LED light 3 is arranged in the surface of chamfering identification LED light 2, and camera 4 is arranged
In the surface of end face identification LED light 3, and the axial line of camera 4 and end face identification LED light 3 and chamfering identify LED light 2
Axial line is located on the same line；End face identification LED light 3 includes the first lampshade 5 of annular, is arranged on the first lampshade 5
First point light source 6 of one ring shape, the reflector 7 that 5 bottom of the first lampshade is set and setting the outside of the first point light source 6 simultaneously
The filter 8 being fixed on the first lampshade 5；The chamfering identification LED light 2 includes the second lampshade 9 of annular, is arranged in the second lamp
Second point light source 10 of the ring shape on cover 9 is arranged in inside lampshade and by the second point light source 10 inside the second lampshade 9
Reflective side 11 on light reflection 45 degree of angle vertical irradiations to 1 chamfering of retainer of sending, the second lampshade 9 block chamfering identification
The light of LED light 2 shines directly on the reflector 7 of the lampshade bottom of end face identification LED light 3, prevents the light of chamfering identification LED
Line identifies that the reflector 7 of 3 bottom of LED light is emitted to workpiece surface and causes 1 end face of retainer is luminous to interfere with chamfering by end face
The shooting of picture.
The light that end face identification LED light 3 issues is light downwards annular in shape, by the anti-of 1 upper surface of retainer
It is shone directly on camera after penetrating, when arranging end face identification LED light 3, the setting of its 5 lower edge of the first lampshade will guarantee
After the light that identification LED light 3 issues in end face projects vertically, it is reflected into chamfering identification LED light 2 without going past retainer 1.
The light that chamfering identifies that LED light 2 issues is oblique light ray annular in shape；And the second lamp of chamfering identification LED light 2
Cover 9 need guarantee section block chamfering identification LED light 2 light, guarantee chamfering identification LED light 2 light will not irradiate or
It is reflected into end face identification LED light 3 by the chamfering on retainer 1.
When shooting, end face is identified that LED light 3 and chamfering identification LED light 2 are lighted simultaneously first, control camera 4 is shot
First group of picture turns off chamfering and identifies that LED light 2 or end face identify one in LED light 3, and control camera 4 shoots second
Group picture removes in first group of picture and in second group of picture in a computer by first group of picture and second group of picture comparison
All identical pixels obtain that treated picture, by the normal pictures of treated picture and the standard component obtained in advance into
Row compares, and whether the edge of judgement treated picture and the profile of normal pictures are in ± n pixel, if judging result exists
In ± n pixel, then it is assumed that should treated that picture can be used as the standard for judging retainer front and back sides, and thus judge
The end face that retainer is now placed in top is front or reverse side；If judging result is not in ± n pixel, without sentencing
It is disconnected as a result, carry out in turn retainer itself whether He Ge detection.
The normal pictures of the standard component are equipped with four altogether, and end face identification is only opened when respectively standard component is face-up
Photo, the standard component of the shooting of LED light 3 only open photo, the standard component reverse side court that chamfering identification LED light 2 is shot when face-up
Only opened when upper end face identification LED light 3 shoot photo and standard component reverse side upward when only open chamfering identification LED light 2 shoot
Photo, what is closed when shooting second group of picture is that treated picture and standard component are face-up if chamfering identification LED light 2
When only open end face identification LED light 3 shoot photo and standard component reverse side upward when only open end face identification LED light 3 shoot
Photo compares；What is closed when shooting second group of picture is that treated picture and standard component be just if end face identification LED light 3
Up when only open chamfering identification LED light 2 shoot photo and standard component reverse side upward when only open chamfering identification LED light 2
The photo of shooting compares.
The n is accuracy rating, and numerical value is determined by the resolution ratio of used camera 4.
Above-described embodiment is presently preferred embodiments of the present invention, is not a limitation on the technical scheme of the present invention, as long as
Without the technical solution that creative work can be realized on the basis of the above embodiments, it is regarded as falling into the invention patent
Rights protection scope in.
Claims (3)
1. a kind of retainer front and back sides recognition methods based on the illumination of double LED light, it is characterised in that: provided using two groups of LED light
Illumination carries out image taking using camera (4), and two groups of LED light are respectively end face identification LED light (3) and chamfering identification LED light
(2), two groups of LED light are annularly arranged, end face identification LED light (3) is arranged in the surface of chamfering identification LED light (2), camera shooting
Head (4) setting is in the surface of end face identification LED light (3), and the axial line of camera (4) and end face identify LED light (3) and fall
The axial line of angle identification LED light (2) is located on the same line；End face identification LED light (3) include annular the first lampshade (5),
The first point light source (6) of the ring shape being arranged on the first lampshade (5), setting the first lampshade (5) bottom reflector (7)
And setting is in the filter (8) the first point light source (6) outside and be fixed on the first lampshade (5)；The chamfering identifies LED light
(2) include the second lampshade (9) of annular, the second point light source (10) that a ring shape on the second lampshade (9) is arranged, setting exist
45 degree of angle vertical irradiations are reflected to guarantor inside lampshade and by the light that internal the second point light source (10) of the second lampshade (9) issues
The reflective side (11) in frame (1) chamfering is held, the light that the second lampshade (9) blocks chamfering identification LED light (2) shines directly into end face
On the reflector (7) for identifying the lampshade bottom of LED light (3), prevent the light of chamfering identification LED from identifying LED light (3) by end face
The reflector (7) of bottom, which is emitted to workpiece surface, leads to the luminous shooting for interfering with chamfering picture in retainer (1) end face；
When shooting, end face identification LED light (3) and chamfering identification LED light (2) are lighted simultaneously first, control camera (4) shooting
First group of picture out turns off chamfering and identifies that LED light (2) or end face identify one in LED light (3), and control camera (4) is clapped
Second group of picture is taken out, in a computer by first group of picture and the comparison of second group of picture, is removed in first group of picture with second
All identical pixels picture that obtains that treated in group picture, by the mark of treated picture and the standard component obtained in advance
Quasi- picture is compared, and whether the edge of judgement treated picture and the profile of normal pictures are in ± n pixel, if sentencing
Disconnected result is in ± n pixel, then it is assumed that treated picture the can be used as standard for judging retainer front and back sides, and by
This judges that the end face that retainer is now placed in top is front or reverse side；If judging result not in ± n pixel,
Without judging result, so carry out retainer itself whether He Ge detection.
2. a kind of retainer front and back sides recognition methods based on the illumination of double LED light according to claim 1, feature exist
In: the normal pictures of the standard component are equipped with four altogether, and identification LED light in end face is only opened when respectively standard component is face-up
(3) photo, the standard component shot only opens chamfering when face-up and identifies the photo of LED light (2) shooting, standard component reverse side upward
When only open end face identification LED light (3) shooting photo and standard component reverse side upward when only open chamfering identification LED light (2) clap
The photo taken the photograph, treated picture and the standard component front if being chamfering identification LED light (2) closed when shooting second group of picture
Only opened when upward end face identification LED light (3) shooting photo and standard component reverse side upward when only open end face identification LED light
(3) photo shot compares；Closed when shooting second group of picture be end face identification LED light (3) if treated figure
Piece is only opened when only opening the photo that chamfering identification LED light (2) is shot and standard component reverse side when face-up with standard component upward
The photo of chamfering identification LED light (2) shooting compares.
3. a kind of retainer front and back sides recognition methods based on the illumination of double LED light according to claim 1, feature exist
In: the n is accuracy rating, and numerical value is determined by the resolution ratio of used camera (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710260516.3A CN107202677B (en) | 2017-04-20 | 2017-04-20 | Retainer front and back sides recognition methods based on the illumination of double LED light |
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| CN201710260516.3A CN107202677B (en) | 2017-04-20 | 2017-04-20 | Retainer front and back sides recognition methods based on the illumination of double LED light |
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| CN107202677A CN107202677A (en) | 2017-09-26 |
| CN107202677B true CN107202677B (en) | 2019-07-09 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112683323B (en) * | 2020-12-27 | 2024-01-12 | 富联裕展科技(深圳)有限公司 | Detection device, control system and control method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748562A (en) * | 2008-12-04 | 2010-06-23 | Juki株式会社 | Button identification device and button identification method |
| CN203287330U (en) * | 2013-06-02 | 2013-11-13 | 杭州欧谱洛博自动化技术有限公司 | Full-angle vision comprehensive detection system for appearance of bearing roller |
| CN203824524U (en) * | 2014-04-16 | 2014-09-10 | 杭州欧谱洛博自动化技术有限公司 | Detection device detecting roller chamfer and end face simultaneously |
| CN104165653A (en) * | 2014-08-27 | 2014-11-26 | 洛阳久德轴承模具技术有限公司 | Device for collecting end face image and chamfer image of bearing roller and collecting method thereof |
| DE102009058215B4 (en) * | 2009-12-15 | 2014-12-18 | Aktiebolaget Skf | Method and device for surface inspection of a bearing component |
| CN104897672A (en) * | 2015-05-15 | 2015-09-09 | 浙江工业大学 | Holder positive and negative side discrimination device |
| CN105092577A (en) * | 2015-05-15 | 2015-11-25 | 浙江工业大学 | Holder positive and negative side distinguishing device |
-
2017
- 2017-04-20 CN CN201710260516.3A patent/CN107202677B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748562A (en) * | 2008-12-04 | 2010-06-23 | Juki株式会社 | Button identification device and button identification method |
| DE102009058215B4 (en) * | 2009-12-15 | 2014-12-18 | Aktiebolaget Skf | Method and device for surface inspection of a bearing component |
| CN203287330U (en) * | 2013-06-02 | 2013-11-13 | 杭州欧谱洛博自动化技术有限公司 | Full-angle vision comprehensive detection system for appearance of bearing roller |
| CN203824524U (en) * | 2014-04-16 | 2014-09-10 | 杭州欧谱洛博自动化技术有限公司 | Detection device detecting roller chamfer and end face simultaneously |
| CN104165653A (en) * | 2014-08-27 | 2014-11-26 | 洛阳久德轴承模具技术有限公司 | Device for collecting end face image and chamfer image of bearing roller and collecting method thereof |
| CN104897672A (en) * | 2015-05-15 | 2015-09-09 | 浙江工业大学 | Holder positive and negative side discrimination device |
| CN105092577A (en) * | 2015-05-15 | 2015-11-25 | 浙江工业大学 | Holder positive and negative side distinguishing device |
Non-Patent Citations (2)
| Title |
|---|
| 圆锥滚子轴承视觉检测研究;肖强;《中国优秀硕士学位论文全文数据库信息科技辑》;20100415(第4（2010）期);I140-262 * |
| 轴承保持架计算机视觉检测方法研究;王朝晖 等;《机械设计与制造》;20020831(第4（2002）期);第35-37页 * |
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