CN204269088U - A kind of strain line zeroing fixture - Google Patents
A kind of strain line zeroing fixture Download PDFInfo
- Publication number
- CN204269088U CN204269088U CN201420708102.4U CN201420708102U CN204269088U CN 204269088 U CN204269088 U CN 204269088U CN 201420708102 U CN201420708102 U CN 201420708102U CN 204269088 U CN204269088 U CN 204269088U
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- pedestal
- edge
- knife plate
- steel ruler
- locating piece
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Abstract
The utility model discloses a kind of strain line zeroing fixture, comprise image display system to unify the pedestal of tubular, and control the control system of pedestal movement, the top of described pedestal is provided with light source and camera, the bottom tube port position level of pedestal is provided with edge of a knife plate and straight steel ruler locating piece, the be arrangeding in parallel with straight steel ruler locating piece and be fixedly connected with pedestal of described edge of a knife plate, described image display system is electrically connected with camera, light source.Compared with prior art, the utility model adopts the system of optics, machinery one, makes the location of zero reference more accurate compared to traditional approach, ensure that the accuracy that the error of indication is examined and determine, and easy to use.Design and consider for hommization, in the course of work of repeatedly bothering, reduce the pressure of staff, reduce labour intensity, protection staff eyesight.
Description
Technical field
The utility model relates to strain line class measurer, particularly relates to a kind of strain line zeroing fixture.
Background technology
At present, about the searching of zero-bit in the verification process of strain line measurer, traditional way is that naked eyes viewing is aimed at, to align with the null value groove of standard metrology appliance by the termination of tested measurer and the mode of fixing to determine zero reference.The shortcoming of prior art is this aligns the termination of tested measurer with the null value groove of standard metrology appliance and the mode of fixing is very large to determine the method error of zero reference, usually all at about 0.03mm, its reason is alignment zero-bit is lean on the viewing of the naked eyes of people to realize, the resolution of people's naked eyes is not very high, and repeatedly working for a long time to bring eye fatigue to cause zero error bigger than normal, thus affects verification result.
Utility model content
The purpose of this utility model is just to provide one can determine zero-bit sooner, more surely, more accurately; reduce the error of zero simultaneously; the binocular vision of protection worker, study in this problem at strain line class Advanced Integrity Inspection Techniques, strain line zeroing fixture has been invented in the determination for strain line zero-bit.
To achieve these goals, the technical solution adopted in the utility model is: a kind of strain line zeroing fixture, comprise image display system to unify the pedestal of tubular, and control the control system of pedestal movement, the top of described pedestal is provided with light source and camera, the bottom tube port position level of pedestal is provided with edge of a knife plate and straight steel ruler locating piece, the be arrangeding in parallel with straight steel ruler locating piece and be fixedly connected with pedestal of described edge of a knife plate, and described image display system is electrically connected with camera, light source;
As preferably, described edge of a knife plate and spacing between straight steel ruler locating piece be 10mm;
As preferably, the cutting edge of described edge of a knife plate is 0.1mm ~ 0.2mm;
As preferably, described pedestal top is provided with cover plate, and described camera, light source are fixed on cover plate, and described cover plate and pedestal removably connect.
Compared with prior art, the utility model has the advantage of: adopt optics, the system of machinery one, make the location of zero reference more accurate compared to traditional approach, ensure that the accuracy that the error of indication is examined and determine, and easy to use.Design and consider for hommization, in the course of work of repeatedly bothering, reduce the pressure of staff, reduce labour intensity, protection staff eyesight.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, pedestal; 2, straight steel ruler locating piece; 3, edge of a knife plate; 4, camera; 5, light source.
Embodiment
Embodiment: the utility model is described in further detail below.See Fig. 1, a kind of strain line zeroing fixture, comprise image display system to unify the pedestal 1 of tubular, and control the control system of pedestal 1 movement, described pedestal 1 top is provided with cover plate, described camera 4, light source 5 is fixed on cover plate, light source 5 is adopted to be to provide suitable end light, the edge of a knife that light source 5 is irradiated to edge of a knife plate 3 can produce the image of good imaging quality, described cover plate and pedestal 1 removably connect, the bottom tube port position level of pedestal 1 is provided with edge of a knife plate 3 and straight steel ruler locating piece 2, the be arrangeding in parallel with straight steel ruler locating piece 2 and be fixedly connected with pedestal 1 of described edge of a knife plate 3, described image display system and camera 4, light source 5 is electrically connected.
Adopt edge of a knife plate 3 but not other slab end faces as the benchmark finding mechanical zero, because in machining, slab end face upper edge hole or lower bead have chamfering, error is there will be when generation image, and edge of a knife plate 3 is very little what add that man-hour, cutting edge can do, usually can accomplish 0.1mm ~ 0.2mm, can straight line be considered as, accurate image quality can be produced in CCD imaging process.In addition, edge of a knife plate 3 is also the zero-bit location as calibrating steel tape, it is firm that edge of a knife shape is more conducive to hook, the material of edge of a knife plate 3 must adopt antifriction metal (AFM) to make, prevent edge of a knife wearing and tearing in use procedure and affect zero-bit precision, in order to ensure the clear of the image of the edge of a knife, the knife-edge linearity of edge of a knife plate 3 and surfaceness should meet certain accuracy requirement.。
In order to determine the zero-bit of examining and determine straight steel ruler, need to determine the distance of the cutting edge of edge of a knife plate 3 to straight steel ruler locating piece 2, this distance is very accurate, for this reason, when mechanical erection, the cutting edge adopting the gauge block of 10mm to carry out tool setting oralia 3 carry out degree of determining to the distance of straight steel ruler locating piece 2.The reference position of calibrating straight steel ruler is determined by the mounting distance of straight steel ruler locating piece 2 to edge of a knife plate 3, and this distance is designed to 10mm, is realized by material measure gauge block, and edge of a knife plate 3 is the reference position of calibrating steel tape simultaneously.When after the cutting edge image being seen edge of a knife plate 3 clearly by CCD camera 4 on computing machine computer screen, position is now set to zero-bit by Survey Software, and this position is the initial zero-bit of calibrating straight steel ruler locating piece 2.In order to examine and determine straight steel ruler, by Survey Software by the zero-bit that previously the arranged reverse direction skew 10mm along direction of measurement, at this moment system zero-bit overlaps with straight steel ruler locating piece 2, and the zero-bit of both having examined and determine straight steel ruler has been determined complete.What adopt CCD and image processing techniques to make system be compared to naked eyes theoretically again distinguishes that capacity reliability is stronger, and make system accuracy higher, error is less.
Secondly, this invention alleviates the labour intensity of worker.
Principle of work is as follows, the comprehensive verification system of strain line class measurer is for detecting the error of straight steel ruler, steel tape, optical tooling scale and displacement transducer, CCD camera 4 measures the side-play amount at straight steel ruler in visual field, steel tape scale mark relative camera 4 center, optical grating ruler measurement CCD camera 4 center.In verification process, system is very important with identification for the determination of zero-bit.For strain line class measurer, the searching of zero-bit is exactly the searching of positioning datum, and whether the accurate positioning of zero-bit directly affects the error of indication of tested measurer and final judgement.
During system works, first determine that various piece installs, open end light, dollying head 4 is to the top of edge of a knife plate 3, adjustment camera 4 focal length makes observer can see the sharp image of edge of a knife plate 3 on the screen of image display, this time with computer sampling, the position of counter records edge of a knife plate 3 sharp image in system.
Afterwards, the coordinate of pedestal 1 is made to move 10mm towards the negative X-direction of system by control system, to the position of straight steel ruler locating piece 2, the length distance of 10mm is that the material measure gauge block being 10mm by specification is spent surely, due to the disjunction mark standard that gauge block is length, so the length displacement accuracy of measurement of 10mm is very high.
After system moves to straight steel ruler locating piece 2 position, by computer system to zero, at this moment zero-bit is just determined complete.
The utility model, its reading error comes from the resolution of camera 4, and the error that the camera 4 of 800TV line measures edge of a knife plate 3 is ± 1 μm, and compared with the reading error of locating the 0.03mm brought with naked eyes, precision improves more than 100 times.
Above exhaustive presentation is carried out to a kind of strain line zeroing fixture provided by the utility model, apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, to change of the present utility model and improve will be possible, and design and the scope of accessory claim defined can not be exceeded, in sum, this description should not be construed as restriction of the present utility model.
Claims (4)
1. a strain line zeroing fixture, it is characterized in that: comprise image display system and to unify the pedestal of tubular, and control the control system of pedestal movement, the top of described pedestal is provided with light source and camera, the bottom tube port position level of pedestal is provided with edge of a knife plate and straight steel ruler locating piece, the be arrangeding in parallel with straight steel ruler locating piece and be fixedly connected with pedestal of described edge of a knife plate, described image display system is electrically connected with camera, light source.
2. a kind of strain line zeroing fixture according to claim 1, is characterized in that: described edge of a knife plate and spacing between straight steel ruler locating piece be 10mm.
3. a kind of strain line zeroing fixture according to claim 1, is characterized in that: the cutting edge of described edge of a knife plate is 0.1mm ~ 0.2mm.
4. a kind of strain line zeroing fixture according to claim 1, is characterized in that: described pedestal top is provided with cover plate, and described camera, light source are fixed on cover plate, and described cover plate and pedestal removably connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420708102.4U CN204269088U (en) | 2014-11-23 | 2014-11-23 | A kind of strain line zeroing fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420708102.4U CN204269088U (en) | 2014-11-23 | 2014-11-23 | A kind of strain line zeroing fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204269088U true CN204269088U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420708102.4U Active CN204269088U (en) | 2014-11-23 | 2014-11-23 | A kind of strain line zeroing fixture |
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| CN (1) | CN204269088U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964626A (en) * | 2015-06-10 | 2015-10-07 | 浙江省计量科学研究院 | CCD vision-based grating type three-class metal linear scale standard measuring device |
| CN106679601A (en) * | 2016-12-31 | 2017-05-17 | 桐庐县检验检测中心 | Multifunctional length calibrating device and calibrating method thereof |
-
2014
- 2014-11-23 CN CN201420708102.4U patent/CN204269088U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964626A (en) * | 2015-06-10 | 2015-10-07 | 浙江省计量科学研究院 | CCD vision-based grating type three-class metal linear scale standard measuring device |
| CN106679601A (en) * | 2016-12-31 | 2017-05-17 | 桐庐县检验检测中心 | Multifunctional length calibrating device and calibrating method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |