CN201318936Y - Contour measuring projection device - Google Patents
Contour measuring projection device Download PDFInfo
- Publication number
- CN201318936Y CN201318936Y CNU2008202271421U CN200820227142U CN201318936Y CN 201318936 Y CN201318936 Y CN 201318936Y CN U2008202271421 U CNU2008202271421 U CN U2008202271421U CN 200820227142 U CN200820227142 U CN 200820227142U CN 201318936 Y CN201318936 Y CN 201318936Y
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- light
- lens
- light path
- dividing device
- glass screen
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- Expired - Lifetime
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- 238000005259 measurement Methods 0.000 claims description 22
- 239000005338 frosted glass Substances 0.000 claims description 21
- 238000002834 transmittance Methods 0.000 claims description 3
- 230000003321 amplification Effects 0.000 abstract 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 3
- 230000005540 biological transmission Effects 0.000 abstract 2
- 239000005337 ground glass Substances 0.000 abstract 1
- 230000001939 inductive effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000004907 flux Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 101100117236 Drosophila melanogaster speck gene Proteins 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model provides a contour measuring projection device, which comprises a transmission light source, a measuring platform, an amplification objective lens, a plane mirror surface reflector group and a ground glass screen, and is characterized in that the rear portion of the amplification objective lens is equipped with a light-dividing device, one side of the light-dividing device is equipped with a group lens and a CCD camera, the group lens comprises a convex lens and a concave lens, light paths which are launched by the transmission light source reach to the light-dividing device after passing through the amplification objective lens, reflected light paths of the light-dividing device reach to the surface of inductive elements of the CCD camera passing through the group lens which comprises the convex lens and the concave lens, and the CCD camera is connected with a computer. Image acquisition, boundary identification and contour measuring programs are arranged in the computer, a contour is done with quantize measuring through using the CCD digital camera technology and the image treatment technology, thereby preventing artificial error and external light interference. The measuring accuracy is high, and the use is convenient.
Description
Technical field
The utility model belongs to the detecting instrument technical field of workpiece, is a kind of profile measurement projection arrangement specifically.
Background technology
The quality of erose workpiece adopts the profile measurement projection arrangement that the method that the profile drawing of the profile of testee and measured piece compares is checked usually, concrete grammar is: with the profile of testee accurately enlarging projection to the frosted glass screen, move with the mechanical arm that photoelectric induction device is installed profile of testee on the frosted glass screen again, promptly the profile to workpiece on the frosted glass screen scans, obtain the numerical information of testee profile, again with the profile drawing of measured piece according to same ground accurate in scale enlarging projection to the frosted glass screen, scan, obtain the numerical information of the profile drawing of measured piece, it is right that two groups of numerical informations are carried out overlap ratio, to determine to survey the crudy of part profile.
The key of profile measurement projection arrangement is a Boundary Recognition, Boundary Recognition has experienced from the limit of manually seeking of beginning gets some the technical development that Boundary Recognition device is till now sought the limit automatically, what seek the limit technology automatically is photoelectric conversion technique at all, when a border segment is passed through a light activated element, the luminous flux of light activated element changes, the Boundary Recognition device thinks to be frontier point herein, yet, light activated element must have certain luminous flux to respond to, therefore, the zone that it monitored can not be infinitely small, generally at two to three millimeters scope (hole diameter or light transmitting fiber diameter).In addition, the border enters the change that this zone all can cause identical luminous flux from all directions.Therefore, the value of the luminous flux of She Dinging and be not suitable for other direction promptly will produce a bigger deviation of getting on other direction in one direction.
In addition, the installation site of Boundary Recognition device has influenced the accuracy of measuring to a certain extent: owing to the sensing element of having no way of installing on the frosted glass in the Boundary Recognition device (normally light transmitting fiber), therefore, must fix glass fibre by a organic glass that is fixed on the frosted glass metal rotating frame, Here it is outer rim circle recognizer across screen diameter.A little less than light transmitting fiber is highly brittle, for avoiding fractureing, fibre-optic end must be wrapped up with metal, thereby increase the straight warp in end, to such an extent as under the situation of little border segment, often can't correctly determine to get tram a little.In addition, screen center is the intersection of cross delineation line, and also light tight herein, the Boundary Recognition device is got less than point.For avoiding herein, glass fibre must be put as on the position of departing from the cross center.So just caused with the Boundary Recognition device and got a little and the deviation (2 coordinate figure is unequal) of getting with the cross center a little, thereby increased the difficulty of measuring, caused bigger measured deviation.In addition, outer rim circle recognizer is because its sensitivity speck is installed in the outside of frosted glass screen, therefore, very easily be subjected to the influence of ambient light photograph, for example: the irradiation of sunlight direct projection and houselights etc. all may be directed at the additional measured deviation and the nonrepeatability of measurement result.Most in the world now instrument manufacturers has only grasped the technology of outer rim circle recognizer.
Interior rim circle recognizer is that light path is divided into two, and one the tunnel will survey the part contour image is projected on the frosted glass screen, and another road then will be surveyed on the light-sensitive surface that the part influencing profiles is projected to light activated element by the beam split eyeglass.Because interior rim circle recognizer is installed among the light path, therefore, has fundamentally got rid of the influence of ambient light photograph, has guaranteed the repeatability of measurement result.Carry out on a zonule but Boundary Recognition remains, but not therefore the induction of point truly, still can not reach very high precision.In addition, because the effect of beam split, measuring with observing is to carry out on different planes, and the centering at Boundary Recognition device and frosted glass screen cross center be by the people feel carry out, therefore, still exist little deviation between 2, thereby the correctness of a position is got in influence, makes troubles to measurement.
Summary of the invention
The purpose of this utility model is to provide a kind of profile measurement projection arrangement at the problem of prior art existence, adopt image processing technique that the measured workpiece profile is measured automatically, avoid human error and ambient light to disturb, improve measuring accuracy, and easy to use.
The purpose of this utility model is achieved through the following technical solutions: a kind of profile measurement projection arrangement, comprise transmitted light source, scaffold tower, enlarging objective, plane minute surface reflective mirror group, it is characterized in that: a light-dividing device is installed behind the described enlarging objective, arrangement of mirrors and ccd video camera that light-dividing device one side setting is made up of convex lens and concavees lens, the light path of transmitted light source emission arrives light-dividing device behind enlarging objective, the arrangement of mirrors that the reflected light path of light-dividing device is formed via convex lens and concavees lens arrives on the sensing element face of ccd video camera, and ccd video camera is connected to computing machine.
Described light-dividing device is that single face is coated with the flat-plate lens of semi-transparent film or one by two bonding square lens that form of triangular prism, and is coated with semi-transparent film on the bonding plane of above-mentioned two triangular prisms.
The described transmittance that is plated in the semi-transparent film on the flat-plate lens or forms the semi-transparent film that plates on the two triangular prism bonding planes of square lens is 50%.
The transmitted light path of described light-dividing device arrives the frosted glass screen by plane minute surface reflective mirror group.
Described plane minute surface reflective mirror group is provided with according to the position of the light path parallel that light path that makes arrival frosted glass screen and transmitted light source project enlarging objective.
Described plane minute surface reflective mirror group is provided with according to the vertical position of light path that light path that makes arrival frosted glass screen and transmitted light source project enlarging objective.
Described plane minute surface reflective mirror group is provided with according to the acutangulate position of light path that light path that makes arrival frosted glass screen and transmitted light source project enlarging objective.
Advantage of the present utility model and good effect are: adopt CCD digital camera technology and image processing techniques to the profile measurement that quantizes, and can carry out the giant-screen outline projection simultaneously, having the light-dividing device of semi-transparent film and adjustable convex lens, the concavees lens group of spacing has guaranteed to project one of image on frosted glass screen and the CCD sensitive surface and has made peace accurately, avoided human error and ambient light to disturb the measuring accuracy height.Simultaneously, working service is convenient.
Description of drawings
Fig. 1 is the structural drawing of the small-sized parallel light path embodiment of the utility model profile measurement projection arrangement;
Fig. 2 has the planar lens synoptic diagram of translucent plated film for the utility model profile measurement projection arrangement;
Fig. 3 is the structural drawing of the small-sized vertical optical path embodiment of the utility model profile measurement projection arrangement;
Fig. 4 is the structural drawing of the medium-sized inclined-plane light path embodiment of the utility model profile measurement projection arrangement.
Embodiment
Referring to Fig. 1, a kind of embodiment of profile measurement projection arrangement, comprise: transmitted light source 1, scaffold tower 2, enlarging objective 3, plane minute surface reflective mirror group 5, frosted glass screen 6, one light-dividing device 7 is installed, arrangement of mirrors and ccd video camera 10 that light-dividing device 7 one side settings are made up of convex lens 8 and concavees lens 9 behind enlarging objective 3.As shown in Figure 2, light-dividing device 7 is flat-plate lens 12 (or the bonding square lens that form of triangular prism that are coated with semi-transparent film by two middle bonding planes) that single face is coated with semi-transparent film 13.The transmittance of semi-transparent film 14 is 50%, and when light arrived semi-transparent film 14,50% light intensity was propagated along former direction like this, will be reflected by semi-transparent film 14 and come and remain 50% light intensity.
To be placed on the scaffold tower 2 by side workpiece 0, transmitted light source 1 is radiated at by on the side workpiece 0, light path 4 behind enlarging objective 3 arrives the semi-transparent film 13 of flat-plate lens 12, semi-transparent film 13 is divided into transmitted light path 4-1 and reflected light path 4-2 two parts with light path 4, transmitted light path 4-1 reaches frosted glass screen 6 by plane minute surface reflective mirror group 5, reflected light path 4-2 planoconvex lens 8 and concavees lens 9 arrive on the sensing element face of ccd video camera 10, spacing between convex lens 8 and the concavees lens 9 can be regulated, thereby has guaranteed to arrive the image definition on the ccd video camera 10 sensing element faces.
The outer dress that outline projection measuring method provided by the utility model is different from the past fully or the method for interior rim circle recognizer, its successful condition precedent is that the image that projects on the ccd video camera sensitive surface must be clear and undistorted, and light path system provided by the utility model has guaranteed this point effectively.
In actual use, can be according to the light path system of testee shape and size employing diverse location, remove small-sized parallel light path profile projector light path shown in Figure 1 and be described, also have as shown in Figure 3 small-sized vertical optical path profile projector light path and the embodiment of medium-sized inclined-plane light path profile projector light path shown in Figure 4.Though these light path system form differences have identical formation and principle of work, repeat no more.
Certainly, above-mentioned explanation is not to be to restriction of the present utility model, and the utility model also is not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present utility model, the variation of making, remodeling, interpolation or replacement also should belong to protection domain of the present utility model.
Claims (7)
1, a kind of outline measurement projector device, comprise: transmitted light source, scaffold tower, enlarging objective, plane minute surface reflective mirror group, frosted glass screen, it is characterized in that: a light-dividing device is installed behind the described enlarging objective, arrangement of mirrors and ccd video camera that light-dividing device one side setting is made up of convex lens and concavees lens, the light path of transmitted light source emission arrives light-dividing device behind enlarging objective, the arrangement of mirrors that the reflected light path of light-dividing device is formed via convex lens and concavees lens arrives on the sensing element face of ccd video camera, and ccd video camera is connected to computing machine.
2, according to the described profile measurement projection arrangement of claim 1, it is characterized in that: described light-dividing device is that single face is coated with the flat-plate lens of semi-transparent film or one by two bonding square lens that form of triangular prism, and is coated with semi-transparent film on the bonding plane of above-mentioned two triangular prisms.
3, according to the described profile measurement projection arrangement of claim 2, it is characterized in that: the described transmittance that is plated in the semi-transparent film on the flat-plate lens or forms the semi-transparent film that plates on the two triangular prism bonding planes of square lens is 50%.
4, according to claim 1 or 2 described profile measurement projection arrangements, it is characterized in that: the transmitted light path of described light-dividing device arrives the frosted glass screen by plane minute surface reflective mirror group.
5, according to the described profile measurement projection arrangement of claim 4, it is characterized in that: plane minute surface reflective mirror group is provided with according to the position of the light path parallel that light path that makes arrival frosted glass screen and transmitted light source project enlarging objective.
6, according to the described profile measurement projection arrangement of claim 4, it is characterized in that: plane minute surface reflective mirror group is provided with according to the vertical position of light path that light path that makes arrival frosted glass screen and transmitted light source project enlarging objective.
7, according to the described profile measurement projection arrangement of claim 4, it is characterized in that: plane minute surface reflective mirror group is provided with according to the acutangulate position of light path that light path that makes arrival frosted glass screen and transmitted light source project enlarging objective.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202271421U CN201318936Y (en) | 2008-12-16 | 2008-12-16 | Contour measuring projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202271421U CN201318936Y (en) | 2008-12-16 | 2008-12-16 | Contour measuring projection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201318936Y true CN201318936Y (en) | 2009-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202271421U Expired - Lifetime CN201318936Y (en) | 2008-12-16 | 2008-12-16 | Contour measuring projection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201318936Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278954A (en) * | 2011-06-27 | 2011-12-14 | 南京钢铁股份有限公司 | Online detector for grinding roll collar slot profile |
| CN102297656A (en) * | 2010-06-23 | 2011-12-28 | 昆山意力电路世界有限公司 | Method for rapidly testing symmetry degree of product by comparing product by utilizing a film negative and projector |
| CN104930988A (en) * | 2015-06-29 | 2015-09-23 | 西南科技大学 | Optical fiber array end surface tilt angle measuring instrument and measuring method |
| CN107741659A (en) * | 2017-11-22 | 2018-02-27 | 青岛海信移动通信技术股份有限公司 | The detection means of LCD modules |
-
2008
- 2008-12-16 CN CNU2008202271421U patent/CN201318936Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297656A (en) * | 2010-06-23 | 2011-12-28 | 昆山意力电路世界有限公司 | Method for rapidly testing symmetry degree of product by comparing product by utilizing a film negative and projector |
| CN102278954A (en) * | 2011-06-27 | 2011-12-14 | 南京钢铁股份有限公司 | Online detector for grinding roll collar slot profile |
| CN104930988A (en) * | 2015-06-29 | 2015-09-23 | 西南科技大学 | Optical fiber array end surface tilt angle measuring instrument and measuring method |
| CN104930988B (en) * | 2015-06-29 | 2018-06-05 | 西南科技大学 | A kind of fiber array end face inclination angle measuring instrument and measuring method |
| CN107741659A (en) * | 2017-11-22 | 2018-02-27 | 青岛海信移动通信技术股份有限公司 | The detection means of LCD modules |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DR. ZHAO + DR. SCHNEIDER MEASURING TECHNOLOGY (QIN Free format text: FORMER OWNER: ZHAO ZHENGKANG Effective date: 20120906 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120906 Address after: 266109 Shandong Province, Qingdao city Chengyang District Spring City Road No. 619 Patentee after: Dr. Zhao Schneider Measurement Technology (Qingdao) Co., Ltd. Address before: 266109 Shandong Province, Qingdao city Chengyang District Spring City Road No. 619 Patentee before: Zhao Zhengkang |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090930 |
|
| CX01 | Expiry of patent term |