CN204255308U - A kind of large area object plane degree pick-up unit - Google Patents
A kind of large area object plane degree pick-up unit Download PDFInfo
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- CN204255308U CN204255308U CN201420679859.5U CN201420679859U CN204255308U CN 204255308 U CN204255308 U CN 204255308U CN 201420679859 U CN201420679859 U CN 201420679859U CN 204255308 U CN204255308 U CN 204255308U
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Abstract
A kind of large area object plane degree pick-up unit is provided, comprises pedestal (1), hydraulic means (2), worktable (4), dust cover (5), vertically shape back up pad (6) and be positioned at the measuring mechanism of dust cover (5).Measuring mechanism comprises bar-like support frame (9), light barrier holder (16), grating (7), displacement platform (8), slide block (12) and load support (15), load support (15) is mounted with the CCD camera (14) and light source (10) that can move horizontally, photocentre and the light source (10) of CCD camera (14) are located in the same horizontal plane, CCD camera (14) and light source (10) are respectively towards grating (7) shooting and luminescence, and control device is connected with displacement platform (8) and controls it and moves up and down.Large area object plane degree pick-up unit of the present utility model can measure the three-dimensional appearance of a large plane quickly and accurately, and with low cost, simple to operate.
Description
Technical field
The utility model technology relates to field of optical detection, is specifically related to a kind of contactless device, particularly a kind of measurement of full field device based on shade mole technology of accurately measuring large area object plane degree fast.
Background technology
At present, the flatness detection method of widespread use adopts the sampling point of some on the surface, measures the height value of these sampling points, then utilize specific formulae discovery, result of calculation is used for the flatness in a sign face.This measuring method, owing to wanting point-to-point measurement, when the measurement sampling point chosen is few, can not reflect a surperficial flatness accurately.And the sampling point of the measurement of adopting many time, certainly will detection speed be affected.Also have some to adopt the measurement of full field instrument of additive methods on the market, but expensive, and it is little to measure area, limits its application in industrial detection.
Utility model content
The purpose of this utility model is the shortcoming overcoming above-mentioned existing equipment.In order to realize the combination of large area object measuring accuracy and measuring speed, the utility model provides a kind of novel flatness checking device.This device can be applied to the measurement of planeness of the large area panels such as mobile phone faceplate, notebook computer panel, panel computer panel, the three-dimensional appearance of large area panel can not only be reflected accurately, and measuring speed is fast, cheap, simple to operate, floor area is little, not disfiguring workpiece surface, not high to operating environment requirements, the requirement that large-scale pipeline produces on-line checkingi can be met.
Large area object plane degree pick-up unit of the present utility model, comprises
Pedestal 1, plays stable support function, and its upper and lower surface horizontal direction is parallel to each other;
Hydraulic means 2, it is by stable support on pedestal 1, and its upper and lower surface horizontal direction is parallel to each other;
Worktable 4, it is positioned on hydraulic means 2, and be subject to the control of hydraulic means 2 and move up and down, its upper and lower surface horizontal direction is parallel to each other;
Dust cover 5, it is casing, lower open, and for ease of installing, the place contacted with bar-like support frame 9 after it has breach;
Vertical shape back up pad 6, is positioned on pedestal 1, the rear side of hydraulic means 2, worktable 4 and dust cover 5, and is fixedly connected with dust cover 5 with pedestal 1, hydraulic means 2 respectively;
It is characterized in that, also comprise the measuring mechanism that entirety is positioned at dust cover 5, measuring mechanism comprises
Bar-like support frame 9, it is vertically fixed on the front side of back up pad 6;
Remaining component is followed successively by from bottom to top
Light barrier holder 16, its level is installed, and is fixedly connected with displacement platform 8;
Grating 7, its level is installed on light barrier holder 16;
Displacement platform 8, it is fixedly connected with bar-like support frame 9, is fixedly connected with light barrier holder 16, moves up and down for controlling grating 7;
Slide block 12, it can slide up and down along bracing frame 9;
Load support (15), it is fixedly connected with slide block 12, and it is mounted with the CCD camera 14 and light source 10 that can move horizontally, wherein CCD camera 14 is made a video recording towards grating 7, light source 10 is luminous towards grating 7, and the photocentre 14 of CCD camera and light source 10 are located in the same horizontal plane;
Control device, it is connected with displacement platform 8 and controls it and moves up and down.
In an embodiment of the present utility model, load support (15) is the T-shaped bar of a horizontal positioned, slide block 12 is fixedly connected with the rear end of T-shaped bar, the front end of T-shaped bar is one section of guide rail, the end, two, left and right of T-shaped bar 15 front end is separately installed with the first slide block 11 and the second slide block 13, first slide block 11 and the second slide block 13 all can along T-shaped bar front end guide rail horizontally slip in surface level, the first slide block 11 and the second slide block 13 fixedly mount CCD camera 14 and light source 10 respectively.
In an embodiment of the present utility model, displacement platform 8 adopts stepper motor moving up and down;
In an embodiment of the present utility model, large area object plane degree pick-up unit of the present utility model also comprises several support column 3, for supporting table 4.
In a preferred embodiment of the present utility model, the quantity of this support column 3 is 4.
In an embodiment of the present utility model, sectional fixture on worktable 4, for fixing measured piece.
Large area object plane degree pick-up unit of the present utility model can measure the three-dimensional appearance of a large plane quickly and accurately, and with low cost, simple to operate.
Accompanying drawing explanation
Fig. 1 illustrates measuring principle figure, and in figure, p represents pitch, and d represents the vertical distance of LED light source and grating, and h represents the photocentre of CCD camera and the horizontal range of LED line source, and H representative surface is to the distance of grating;
Fig. 2 illustrates device overall diagram, wherein 1. pedestals, 2. hydraulic lift, 3. worktable support post, 4. worktable, 5. dust cover, 6. vertical back up pad;
Fig. 3 illustrates the structural map of measuring mechanism, wherein 7. gratings and support thereof, 8. displacement platform, 9. bar-like support frame, 10.LED line source, 11.LED light source positioning sliding block, 12. slide blocks, 13.CCD positioning sliding block, 14.CCD camera, 15. load supports, 16. light barrier holders.
Specific embodiments
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The utility model is achieved through the following technical solutions flatness to detect: as shown in Figure 1, be placed on testee by a grating, when irradiating this grating with LED light source, grating to project out bright alternate grid line on the surface at testee.This grid line is subject to the three-dimensional appearance modulation on testee surface, produces distortion shadow grid.Due to these distortion shadow grid and the overlapping effect with reference to grating grid, create a series of chequered with black and white, the striped that the cycle is exaggerated, this striped is containing the three-dimensional information of body surface.Utilize displacement platform to control grating and move up and down specific distance, can phase shift be realized.Utilize CCD to gather bar graph, each phase shift gathers a width, phase shift 4 times, just can try to achieve wrapped phase by 4 width figure.Utilize computer program Phase Unwrapping Algorithm, try to achieve original phase, and then by certain geometric relationship, just can obtain the three-dimensional appearance on surface.
Fig. 2 is device overall diagram, comprise the pedestal 1 with shock-absorbing function, pedestal 1 can adopt the bottom surface shown in Fig. 2, end face is foursquare lower large little mesa-shaped, also the shape of any other stable base can be adopted, such as square, rectangular parallelepiped, cylinder etc., the shape of pedestal 1 should be able to the hydraulic means 2 that is located thereon of stable support.Hydraulic means 2 moves up and down for controlling worktable 4, and hydraulic means 2 is generally tetragonal body or cylindrical shape.Worktable 4 is generally thin tetragonal body, has several support column 3, and the quantity of support column 3 is generally 4, and support column 3 is bearing on hydraulic means 2, and hydraulic means 2 controls worktable 4 by support column 3 and moves up and down.Can sectional fixture (not shown), such as locating piece on worktable 4, or the unit clamp made according to workpiece shapes, fixture is used for the position of fixation workpiece (i.e. measured piece); Certainly, also can not sectional fixture.According to the thickness of different workpieces, controlled the height of worktable 4 by hydraulic means 2.In large-scale production, the thickness of workpiece of the same race generally changes not quite, does not generally need the height of frequent adjusting operating platform, and only need the position on the table determining workpiece, this is particularly suitable for the topography measurement of planar shaped workpiece.Be core---the measuring mechanism of this device above worktable 4, it is inner that measuring mechanism is positioned at dust cover 5.Dust cover 5 dustproof effect, dust cover 5 is casing, lower open, and dust cover 5 is for being included measuring mechanism.
In above-mentioned ingredient, except worktable 4, worktable support post 3, being all fixedly connected with vertical back up pad 6 of remainder.By the measuring mechanism that dust cover 5 limits, its inner structure as shown in Figure 3: be grating 7 from bottom to top respectively, grating 7 level is installed on light barrier holder 16, and its installation method is as well known to the skilled person.Light barrier holder 16 is fixedly connected with displacement platform 8.Displacement platform 8 is connected with computing machine and controls by it.When controlling phase shift, by computer program to the pulse of stepper motor one fixed number in displacement platform, Driving Stepping Motor rotates, and stepper motor drives displacement platform 8, thus control grating moves up and down, and realizes phase shift.Displacement platform is fixed on bar-like support frame 9 by the fastener of such as screw rod, and bar-like support frame 9 is fixedly connected with the fastener of back up pad 6 by such as screw rod, and its connected mode makes whole measuring mechanism assembly be positioned at dust cover 5.Be a slide block 12 being arranged on bar-like support frame 9 above displacement platform, slide block 12 is fastened on bar-like support frame 9 by the fastener of such as screw rod, and position is generally motionless.At timing signal, screw rod can be unclamped, the position of up-down adjustment slide block 12.Slide block 12 is fixed the load support 15 of a horizontal positioned, slide block 12 is fixedly connected with the rear end of T-shaped bar 15, and the front end of T-shaped bar 15 is one section of guide rail, and the plane residing for T-shaped bar 15 is parallel with the plane residing for grating 7.The end, two, left and right of T-shaped bar 15 front end is separately installed with the first slide block 11 and the second slide block 13, first slide block 11 and the second slide block 13 all can along T-shaped bar front end guide rail horizontally slip (but obviously all can not exceed in the middle part of load support 15), with slide block 12, after having demarcated, by the fastener of such as screw rod, the first slide block 11 and the second slide block 13 are fastened on respectively the left and right end portions of T-shaped bar 15 front end.By the fastener of such as screw rod fixed installation CCD camera 14 on second slide block 13 of left end, CCD camera 14 is vertically installed, and camera lens is in the face of grating 7, and the position loosening CCD camera 14 after screw rod can slightly movement up and down, to finely tune.Below first slide block 11 of right-hand member, (namely in the face of grating 7 side) fixing horizontal installs LED line source 10, luminous towards grating 7.The photocentre of LED line source 10 and CCD camera 14 is located in the same horizontal plane.CCD camera 14 and LED line source 10 are all connected with corresponding power supply, and the output terminal of CCD camera 14 is connected with computing machine.When computing machine control phase shift and CCD camera 14 is adopted after 4 amplitude phase diagrams, the three-dimensional appearance of surface of the work can be obtained.According to different flatness characterizing methods, in conjunction with corresponding computing formula, planeness of workpiece can be obtained.
Fastener is not limited to screw rod, but can adopt device well known to those skilled in the art, such as screw, bolt, register pin.
Below to measure the flatness of certain keyboard of notebook computer, the operation of this device is described.
1. first select suitable fixture.Because worktable is plane, and this device is noncontact is measure, so above keyboard can directly be placed on, only needs to select suitable stop means, to determine the position of keyboard at surface level.
2. the height of adjusting operating platform.Primer fluid pressure device, worktable slowly rises, and observes the image of computing machine simultaneously, occur on screen clearly striped time, stop rise.
3. image acquisition.Detect and start, computing machine first gathers piece image, then gives the pulse of the stepper motor some of displacement platform, grating moves certain distance, gathers the second width image.Repeat above-mentioned steps, until gathered 4 width images, grating has got back to reference position.
4. flatness calculates.This computer-chronograph can show the 1st width image of collection.Drag mouse and select region to be detected.Select rear computing machine just can the three-dimensional appearance of direct output surface, if be previously determined flatness computing formula, directly can obtain flatness.
In large-scale production, the batch of same workpiece is large, do not need re-adjustments worktable and selected zone, after each trade union college completes, start test, by corresponding program, after image acquisition completes, automatically can select measured zone, directly obtain flatness, and then judge that whether workpiece is qualified.
In sum, the utility model has the advantage of: in large area object plane degree detects, accurately can reflect the flatness of object fast.Meanwhile, this device adopts non-contact measurement, can not cause any damage to surface of the work, and structure is simple, and cost is low, simple to operate, easily is automated, and can adapt to the on-line checkingi of production line balance.There is very wide application prospect.
Claims (6)
1. a large area object plane degree pick-up unit, comprises
Pedestal (1), plays stable support function, and its upper and lower surface horizontal direction is parallel to each other;
Hydraulic means (2), it is by stable support on pedestal (1), and its upper and lower surface horizontal direction is parallel to each other;
Worktable (4), it is positioned on hydraulic means (2), and be subject to the control of hydraulic means (2) and move up and down, its upper and lower surface horizontal direction is parallel to each other;
Dust cover (5), it is casing, lower open, after with bar-like support bridge joint touch place have breach;
Vertical back up pad (6), be positioned on pedestal (1), the rear side of hydraulic means (2), worktable (4) and dust cover (5), and be fixedly connected with dust cover (5) with pedestal (1), hydraulic means (2) respectively;
It is characterized in that, also comprise the measuring mechanism that entirety is positioned at dust cover (5), measuring mechanism comprises bar-like support frame (9), and it is vertically fixed on the front side of vertical back up pad (6);
Remaining component is followed successively by from bottom to top
Light barrier holder (16), its level is installed;
Grating (7), its level is installed on light barrier holder (16);
Displacement platform (8), it is fixedly connected with bar-like support frame (9), is fixedly connected with light barrier holder (16), moves up and down for controlling grating (7);
Slide block (12), it can slide up and down along bar-like support frame (9);
Load support (15), it is fixedly connected with slide block (12), it is mounted with the CCD camera (14) and light source (10) that can move horizontally, wherein CCD camera (14) is made a video recording towards grating (7), light source (10) is luminous towards grating (7), and the photocentre of CCD camera (14) and light source (10) are located in the same horizontal plane;
Control device, it is connected with displacement platform (8) and controls it and moves up and down.
2. large area object plane degree pick-up unit as claimed in claim 1, wherein load support (15) is the T-shaped bar of a horizontal positioned, slide block (12) is fixedly connected with the rear end of T-shaped bar, the front end of T-shaped bar is one section of guide rail, the end, two, left and right of T-shaped bar (15) front end is separately installed with the first slide block (11) and the second slide block (13), first slide block (11) and the second slide block (13) all can along T-shaped bar front end guide rail horizontally slip in surface level, first slide block (11) and the second slide block (13) fixedly mount CCD camera (14) and light source (10) respectively.
3. large area object plane degree pick-up unit as claimed in claim 1 or 2, wherein displacement platform (8) adopts stepper motor moving up and down.
4. large area object plane degree pick-up unit as claimed in claim 1 or 2, also comprises several support column (3), for supporting table (4).
5. large area object plane degree pick-up unit as claimed in claim 4, wherein the quantity of support column (3) is 4.
6. large area object plane degree pick-up unit as claimed in claim 1 or 2, the wherein upper sectional fixture of worktable (4), for fixing measured piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420679859.5U CN204255308U (en) | 2014-11-05 | 2014-11-05 | A kind of large area object plane degree pick-up unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420679859.5U CN204255308U (en) | 2014-11-05 | 2014-11-05 | A kind of large area object plane degree pick-up unit |
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| CN204255308U true CN204255308U (en) | 2015-04-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588744A (en) * | 2017-09-06 | 2018-01-16 | 安徽乐金环境科技有限公司 | The flatness detecting system of round iron plate |
| CN108732184A (en) * | 2018-05-22 | 2018-11-02 | 丹阳市精通眼镜技术创新服务中心有限公司 | A kind of apparatus and method of resin lens leakage film defects detection |
| CN110174055A (en) * | 2019-06-11 | 2019-08-27 | 嘉兴正研智能科技有限公司 | A kind of 3D vision detection device of high precision planeness detection |
-
2014
- 2014-11-05 CN CN201420679859.5U patent/CN204255308U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588744A (en) * | 2017-09-06 | 2018-01-16 | 安徽乐金环境科技有限公司 | The flatness detecting system of round iron plate |
| CN108732184A (en) * | 2018-05-22 | 2018-11-02 | 丹阳市精通眼镜技术创新服务中心有限公司 | A kind of apparatus and method of resin lens leakage film defects detection |
| CN110174055A (en) * | 2019-06-11 | 2019-08-27 | 嘉兴正研智能科技有限公司 | A kind of 3D vision detection device of high precision planeness detection |
| CN110174055B (en) * | 2019-06-11 | 2020-10-02 | 嘉兴正研智能科技有限公司 | Three-dimensional visual inspection device that high accuracy plane degree detected |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160329 Address after: 215505 Jiangsu province Changshou City Lianfeng Road No. 58 Patentee after: Suzhou cartesan Testing Technology Co. Ltd Address before: 710000 No. 5, building 111-4, Qujiang village, Xi'an Jiaotong University, Shaanxi Patentee before: Zhou Xiang |
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| DD01 | Delivery of document by public notice |
Addressee: Suzhou cartesan Testing Technology Co. Ltd Document name: Notification of Passing Examination on Formalities |