CN204924191U - Three CCD camera detection mechanism of screw hole - Google Patents
Three CCD camera detection mechanism of screw hole Download PDFInfo
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- CN204924191U CN204924191U CN201520528036.7U CN201520528036U CN204924191U CN 204924191 U CN204924191 U CN 204924191U CN 201520528036 U CN201520528036 U CN 201520528036U CN 204924191 U CN204924191 U CN 204924191U
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Abstract
The utility model relates to a three CCD camera detection mechanism of screw hole, its one end is equipped with the target area, detection mechanism includes: two at least image equipment that each other become certain angle setting, its characterized in that, at least one image equipment forward orientation the target area, at least one image equipment slope orientation the target area, the extension line of image equipment camera lens intersects at the same point of intersect, the point of intersect is located in the target area. The CCD camera of forward setting and the CCD camera division of labor that the slope set up are clear and definite to be detected each quality index of internal screw thread, simultaneously with the different CCD camera setting of two kinds of angles on same fixed plate, detect the whole quality index projects of same internal screw thread in the time of can be integrative.
Description
Technical field
The utility model relates to a kind of thread quality pick-up unit, particularly relates to a kind of threaded hole three CCD camera testing agency.
Background technology
For the internal thread that vitals is provided with, in installation process, need screw or screw to be screwed into.The recurrent problem in process that is screwed into be because the quality problems of internal thread cause whole internal thread stripped thread or other damage and occur, often due to the damage of an internal thread, scrapping of whole vitals will be caused, lose larger.In order to avoid above-mentioned technical matters, the external thread on internal threads and screw is in advance needed to carry out quality testing.Carry out again being screwed into operation after rejecting defective products.
External thread on screw or screw, owing to being positioned at outside, detects in advance to the screw thread on its surface, rejects defective products and is easy to accomplish.But the detection of internal thread is just not easy to realize, and first internal thread is positioned at hole, not easily observes, particularly the screw thread of the larger position of the degree of depth, be also be difficult to especially detect.
Generally include in the project of quality testing: the internal diameter of internal thread, external diameter, the many threads of internal thread, tooth distance between every two two adjacent rings screw threads, spacing (depth of threat) between first lap screw thread and last lap screw thread, (invalid tooth comprises thread: rotten tooth to also have the effective tooth detecting screw thread, agomphosis and agomphosis, even comprise the existence of foreign matter and burr), full tooth rate can also be calculated by internal diameter outside dimension, full tooth rate: just refer to that thread on internal thread hole is before choosing (doing) silk in advance, the internal diameter in hole is enough little, just the silk of that part of end is sharp entirely for the silk that such material picks out, as be not with that of material will lack that part silk point, the quality do not lacked and lack represents with regard to this full tooth rate.
ROI (regionofinterest) i.e. area-of-interest.In machine vision, image procossing, sketch the contours of need region to be processed from processed image in modes such as square frame, circle, ellipse, irregular polygons, be called area-of-interest, ROI.The machine vision softwares such as Halcon, OpenCV, Matlab are commonly used various operator (Operator) sum functions to try to achieve region of interest ROI, and carry out next step process of image.In image processing field, area-of-interest (ROI) is the image-region selected from image, and this region is the emphasis that your graphical analysis is paid close attention to.Draw a circle to approve this region to be further processed.Use ROI draws a circle to approve the target that you want to read, and can reduce the processing time, increases precision.
Summary of the invention
The utility model overcomes the deficiencies in the prior art, provides a kind of contactless threaded hole three CCD camera testing agency.
For achieving the above object, the technical solution adopted in the utility model is: a kind of threaded hole three CCD camera testing agency, its one end is provided with target area, described testing agency comprises: at least two image documentation equipments being mutually certain angle and arranging, it is characterized in that, at least one image documentation equipment forward is towards described target area, and at least one image documentation equipment tilts towards described target area, the extension line of described image documentation equipment camera lens intersects at same intersection point, and described intersection point is positioned at described target area.
In the utility model preferred embodiment, described Image detection mechanism is also provided with annular light source, the camera lens of described image documentation equipment all takes described target area by the endoporus of described annular light source.
In the utility model preferred embodiment, described Image detection mechanism is provided with three image documentation equipments, is respectively the first middle image documentation equipment, and is symmetricly set on the second image documentation equipment and the 3rd image documentation equipment on described first image documentation equipment both sides.
In the utility model preferred embodiment, the camera lens of described first image documentation equipment, described second image documentation equipment and described 3rd image documentation equipment towards extension line intersect at an intersection point.
In the utility model preferred embodiment, described extension line is through after described annular light source, and the intersection point of formation is positioned at described target area.
In the utility model preferred embodiment, described Image detection mechanism is provided with fixed head, and described first image documentation equipment, described second image documentation equipment, described 3rd image documentation equipment and described annular light source are all arranged on described fixed head.
In the utility model preferred embodiment, described fixed head connects mobile module, and the moving direction of described mobile module is towards described target area.
In the utility model preferred embodiment, described first image documentation equipment, described second image documentation equipment and described 3rd image documentation equipment are all movably arranged on described fixed head along respective camera lens extension line direction.
In the utility model preferred embodiment, the angle between the camera lens extension line of described second image documentation equipment and the camera lens extension line of described first image documentation equipment is acute angle; Angle between the camera lens extension line of described 3rd image documentation equipment and the camera lens extension line of described first image documentation equipment is also acute angle.
In the utility model preferred embodiment, described image documentation equipment is CCD camera.
In the utility model preferred embodiment, described first image documentation equipment, described second image documentation equipment and described 3rd image documentation equipment are all arranged on described fixed head by the waist-shaped hole of elongate configuration.
In the utility model preferred embodiment, described acute angle preferably 30 °.
In the utility model preferred embodiment, described Image detection mechanism is arranged on support body, and the region below described Image detection mechanism is target area, and the upper surface of described target area is horizontally disposed with.
In the utility model preferred embodiment, described fixed head is arranged on described support body by vertical guide rail, and described mobile module one end is arranged on described support body, and the other end is arranged on described fixed head.
The utility model solves the defect existed in background technology, and the utility model possesses following beneficial effect:
1) CCD camera that arranges of forward and the CCD camera that is obliquely installed are divided the work each quality index of clear and definite internal threads and are detected, CCD camera different for two kinds of angles is arranged on same fixed head simultaneously, the all-mass index subjet of same internal thread can be detected while one;
2) arrange at least two CCD camera be obliquely installed, can realize the different angle direction at least two, internal threads hole and carry out detection computations, sampling is more comprehensive, and loss reduces greatly; Two CCD camera be obliquely installed are with the use of the free end thread position angle that can detect both ends in internal thread simultaneously, and with this accurate number of turns calculating whole piece screw thread, namely not limiting to and the integral multiple number of turns, can be half-turn;
3) mobile module drives all CCD camera on fixed head and annular light source motion, can distance between flexible CCD camera and internal thread, the focusing of attachment lens;
4) angle between the CCD camera camera lens extension line be obliquely installed and detected internal thread axis is acute angle, preferably 30 ° of angles, above-mentioned angle arrange CCD camera can be made to photograph internal thread inwall on the screw thread of nearly all number of turns, and comparatively clear;
5) each CCD camera can move along its camera lens extension line direction separately on fixed head, is convenient to assist through line focusing each CCD camera;
6) annular light source is arranged between internal thread and CCD camera, arranges endoporus simultaneously, ensures that the light of internal thread reflective annular light source passes in camera lens;
7) endoporus of annular light source is arranged, and edge camera lens is through the shooting of its endoporus, and light effects is better;
8) target area arranges pallet, on pallet, distribution arranges several rows-some row and is with female material.X-axis moves module and Y-axis and moves module control objectives district simultaneously, can facilitate the position of the pallet in adjustment aim district, by material one by one move to position of intersecting point, so that CCD camera detects it;
9) fixed leg and movable post coordinate the predetermined initial position that pallet accurately can be fixed on target area; The folding of cylinder control activity post.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the three-dimensional structure diagram comprising target area of preferred embodiment of the present utility model;
Fig. 2 is the three-dimensional structure diagram of the Image detection mechanism of preferred embodiment of the present utility model;
In figure: 2, support body, 3, fixed head, 4, waist-shaped hole, 5, mobile module, the 6, first image documentation equipment, the 7, second image documentation equipment, 8, the 3rd image documentation equipment, 9, annular light source, 10, endoporus, 11, target area, 12, pallet grippers, 13, fixed leg, 14, movable post, 15, cylinder, 16, X-axis moves module, 17, Y-axis moves module, and 18, intersection point.
Embodiment
Be described in further detail the utility model in conjunction with the accompanying drawings and embodiments now, these accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
As depicted in figs. 1 and 2, a kind of threaded hole three CCD camera testing agency, its one end is provided with target area 11, testing agency comprises: at least two image documentation equipments being mutually certain angle and arranging, at least one image documentation equipment forward head for target district 11, at least one image documentation equipment inclination head for target district 11, the extension line of image documentation equipment camera lens intersects at same intersection point 18, intersection point 18 is positioned at target area 11, and image documentation equipment is CCD camera.
The CCD camera that forward is arranged and the CCD camera that is obliquely installed are divided the work each quality index of clear and definite internal threads and are detected, CCD camera different for two kinds of angles is arranged on same fixed head 3 simultaneously, the all-mass index subjet of same internal thread can be detected while one.
Annular light source 9 is arranged between internal thread and CCD camera, arranges endoporus 10 simultaneously, ensures that the light of internal thread reflective annular light source 9 passes in camera lens.
The endoporus 10 of annular light source 9 is arranged, and edge camera lens is taken through its endoporus 10, and light effects is better.
Image detection mechanism is also provided with annular light source 9, and the camera lens of image documentation equipment is all by the endoporus 10 photographic subjects district 11 of annular light source 9.
Image detection mechanism is provided with three image documentation equipments, be respectively the first middle image documentation equipment 6, and be symmetricly set on second image documentation equipment 7 on the first image documentation equipment 6 both sides and the camera lens of the 3rd image documentation equipment 8, first image documentation equipment 6, second image documentation equipment 7 and the 3rd image documentation equipment 8 towards extension line intersect at an intersection point 18.Arrange at least two CCD camera be obliquely installed, can realize the different angle direction at least two, internal threads hole and carry out detection computations, sampling is more comprehensive, and loss reduces greatly; Two CCD camera be obliquely installed are with the use of the free end thread position angle that can detect both ends in internal thread simultaneously, and with this accurate number of turns calculating whole piece screw thread, namely not limiting to and the integral multiple number of turns, can be half-turn.
Extension line is through after annular light source 9, and the intersection point 18 of formation is positioned at target area 11.
Image detection mechanism is provided with fixed head 3, first image documentation equipment 6, second image documentation equipment 7, the 3rd image documentation equipment 8 and annular light source 9 are all arranged on fixed head 3, fixed head 3 connects mobile module 5, moving direction head for target district 11, first image documentation equipment 6, second image documentation equipment 7 of mobile module 5 and the 3rd image documentation equipment 8 are all movably arranged on fixed head 3 along respective camera lens extension line direction.Mobile module 5 drives all CCD camera on fixed head 3 and annular light source 9 to move, can distance between flexible CCD camera and internal thread, the focusing of attachment lens.
Angle between the camera lens extension line of the second image documentation equipment 7 and the camera lens extension line of the first image documentation equipment 6 is acute angle; Angle between the camera lens extension line of the 3rd image documentation equipment 8 and the camera lens extension line of the first image documentation equipment 6 is also acute angle, acute angle preferably 30 °.Angle between the CCD camera camera lens extension line be obliquely installed and detected internal thread axis is acute angle, preferably 30 ° of angles, above-mentioned angle arrange CCD camera can be made to photograph internal thread inwall on the screw thread of nearly all number of turns, and comparatively clear.
First image documentation equipment 6, second image documentation equipment 7 and the 3rd image documentation equipment 8 are all arranged on fixed head 3 by the waist-shaped hole 4 of elongate configuration.Each CCD camera can move along its camera lens extension line direction separately on fixed head 3, is convenient to assist through line focusing each CCD camera.
Fixed head 3 is arranged on support body 2 by vertical guide rail, mobile module 5 one end is arranged on support body 2, and the other end is arranged on fixed head 3, and Image detection mechanism is arranged on support body 2, region below Image detection mechanism is target area 11, and the upper surface of target area 11 is horizontally disposed with.
Target area 11 is provided with pallet grippers 12, and pallet grippers 12 is provided with at least one fixed leg 14 and at least one movable post 13.Target area 11 is provided with orthogonal X-axis and moves module 16 and Y-axis moves module 17, and X-axis moves module 16 and Y-axis and moves module 17 target area 11 can be driven respectively planar to move at it.Movable post 13 is connected with cylinder 15.Target area 11 arranges pallet, and on pallet, distribution arranges several rows-some row and is with female material.X-axis moves module 16 and Y-axis and moves module 17 control objectives district 11 simultaneously, can facilitate the position of the pallet in adjustment aim district 11, by material one by one move to intersection point 18 position, so that CCD camera detects it.Fixed leg 14 and movable post 13 coordinate the predetermined initial position that pallet accurately can be fixed on target area 11; The folding of cylinder 15 control activity post 13.
The first detection method: a kind of detection computations method of root diameter and internal diameter, by one end towards internal thread hole vertical for the image documentation equipment camera lens with light source, clap the first lap thread image getting internal thread hole aperture, analyze the ring-shaped light spot of the reflective formation of first lap thread in image, calculate internal diameter and the outside dimension of ring-shaped light spot.
Analyze image process to comprise the following steps:
1) analyze blackspot, the spot namely in threaded hole internal diameter, and be that initial point sets up coordinate system with blackspot;
2) draw and look for the ROI frame of ring-shaped light spot, by looking for round operator, simulate the circle of external diameter and the circle of internal diameter, and calculate corresponding external diameter and internal diameter with this, be i.e. the internal diameter of ring-shaped light spot and external diameter.
The second detection method: a kind of internal thread thread number detection computations method, by one end towards internal thread hole that the image documentation equipment camera lens with light source tilts, clap and to get in internal thread hole several just to the thread partial image of camera lens, to analyze in image several just to the arc strip light spots quantity of the reflective formation of thread part of camera lens, i.e. thread number.
The camera lens of two image documentation equipments is respectively from two different vergence directions towards internal thread one end.
The third detection method: a kind of internal thread tooth distance and depth of threat detection computations method, by one end towards internal thread hole that the image documentation equipment camera lens with light source tilts, clap and to get in internal thread hole several just to the thread partial image of camera lens, to analyze in image several just to the arc strip light spots of the reflective formation of thread part of camera lens, the spacing calculated between adjacent two arc strip light spots is tooth distance, and the spacing calculated between first arc strip light spots and last arc strip light spots is depth of threat.
In a preferred embodiment of the third technical scheme of the utility model, the camera lens of two image documentation equipments is respectively from two different vergence directions towards internal thread one end.
4th kind of detection method: a kind of internal thread effective tooth detection computations method, by one end towards internal thread hole that the image documentation equipment camera lens with light source tilts, clap and to get in internal thread hole several just to the thread partial image of camera lens, analyze in image according to the size of each arc strip light spots, several, just to the arc strip light spots of the reflective formation of thread part of camera lens, judge that whether thread is effective.
Analyzing image process is: draw the ROI frame looking for arc strip light spots, calculate the area ratio of speck and blackspot in ROI frame.
The camera lens of two image documentation equipments is respectively from two different vergence directions towards internal thread one end.
Above according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, related personnel in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on instructions, must determine technical scope according to right.
Claims (10)
1. a threaded hole three CCD camera testing agency, its one end is provided with target area, described testing agency comprises: at least two image documentation equipments being mutually certain angle and arranging, it is characterized in that, at least one image documentation equipment forward is towards described target area, at least one image documentation equipment tilts towards described target area, and the extension line of described image documentation equipment camera lens intersects at same intersection point, and described intersection point is positioned at described target area.
2. threaded hole three CCD camera testing agency according to claim 1, it is characterized in that: described Image detection mechanism is also provided with annular light source, the camera lens of described image documentation equipment all takes described target area by the endoporus of described annular light source.
3. threaded hole three CCD camera testing agency according to claim 2, it is characterized in that: described Image detection mechanism is provided with three image documentation equipments, be respectively the first middle image documentation equipment, and be symmetricly set on the second image documentation equipment and the 3rd image documentation equipment on described first image documentation equipment both sides.
4. threaded hole three CCD camera testing agency according to claim 3, is characterized in that: the camera lens of described first image documentation equipment, described second image documentation equipment and described 3rd image documentation equipment towards extension line intersect at an intersection point.
5. threaded hole three CCD camera testing agency according to claim 4, is characterized in that: described extension line is through after described annular light source, and the intersection point of formation is positioned at described target area.
6. threaded hole three CCD camera testing agency according to claim 3, it is characterized in that: described Image detection mechanism is provided with fixed head, described first image documentation equipment, described second image documentation equipment, described 3rd image documentation equipment and described annular light source are all arranged on described fixed head.
7. threaded hole three CCD camera testing agency according to claim 6, it is characterized in that: described fixed head connects mobile module, the moving direction of described mobile module is towards described target area.
8. threaded hole three CCD camera testing agency according to claim 6, is characterized in that: described first image documentation equipment, described second image documentation equipment and described 3rd image documentation equipment are all movably arranged on described fixed head along respective camera lens extension line direction.
9. threaded hole three CCD camera testing agency according to claim 3, is characterized in that: the angle between the camera lens extension line of described second image documentation equipment and the camera lens extension line of described first image documentation equipment is acute angle; Angle between the camera lens extension line of described 3rd image documentation equipment and the camera lens extension line of described first image documentation equipment is also acute angle.
10. threaded hole three CCD camera testing agency according to claim 1, is characterized in that: described image documentation equipment is CCD camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520528036.7U CN204924191U (en) | 2015-07-21 | 2015-07-21 | Three CCD camera detection mechanism of screw hole |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520528036.7U CN204924191U (en) | 2015-07-21 | 2015-07-21 | Three CCD camera detection mechanism of screw hole |
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| CN204924191U true CN204924191U (en) | 2015-12-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004275A (en) * | 2015-07-21 | 2015-10-28 | 苏州佳祺仕信息科技有限公司 | Threaded hole three-CCD camera detection mechanism |
| CN107270826A (en) * | 2017-06-29 | 2017-10-20 | 西安理工大学 | A kind of vision measuring method in hole |
-
2015
- 2015-07-21 CN CN201520528036.7U patent/CN204924191U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004275A (en) * | 2015-07-21 | 2015-10-28 | 苏州佳祺仕信息科技有限公司 | Threaded hole three-CCD camera detection mechanism |
| CN107270826A (en) * | 2017-06-29 | 2017-10-20 | 西安理工大学 | A kind of vision measuring method in hole |
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Address after: 215011 No. 2, Kunlunshan Road, high tech Zone, Suzhou, Jiangsu Patentee after: Suzhou Jiaqishi Technology Co.,Ltd. Address before: 215011 C6016, Building 1, No. 209, Zhuyuan Road, High tech Zone, Suzhou, Jiangsu Patentee before: SUZHOU JIAQISHI INFORMATION SCIENCE & TECHNOLOGY Co.,Ltd. |
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