CN206339204U - The flexibility measurement apparatus of bar - Google Patents
The flexibility measurement apparatus of bar Download PDFInfo
- Publication number
- CN206339204U CN206339204U CN201621153331.XU CN201621153331U CN206339204U CN 206339204 U CN206339204 U CN 206339204U CN 201621153331 U CN201621153331 U CN 201621153331U CN 206339204 U CN206339204 U CN 206339204U
- Authority
- CN
- China
- Prior art keywords
- light
- measuring staff
- measuring
- convex lens
- bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The utility model discloses a kind of flexibility measurement apparatus of bar, including：Light source, the fiber coupler being connected with the light source and the reference edge, sample end and the data acquisition that are connected respectively with the other three port of the fiber coupler and processing unit；The utility model using whne the point on measuring staff surface for it is raised or sunken when the flexibility of bar is detected from the unequal principle for causing low coherence interference signal intensity different of the depth value corresponding to smooth point, sample end sets array of photoswitch collimator apparatus, a plurality of measuring beam can be made to pass sequentially through each position for treating measuring staff surface, substantially increase the efficiency of detection, reveal of sampling makes data more comprehensively more, data acquisition and processing unit record the picture signal of interference and fit 3-D view and obtain flexibility information automatically, it need not be touched during measurement and treat measuring staff, the damage caused by measuring staff is treated in contact can be avoided, accuracy of detection is high up to micron level.
Description
Technical field
The utility model is related to the technical field of quality detection of bar, the flexibility measurement apparatus of more particularly to a kind of bar.
Background technology
At present, can be because size be small in the process of the various round bars such as bar, rigidity is small, easily deform and
Processing difficulties, and actual with the accurate flexibility for requiring bar to be had, and the method for usual measurement bar flexibility is not
It is enough rapid, and some contact measurement methods may have influence on element, so cause the measurement difficulty for processing bar to greatly increase, and
High-precision bar is needed in practice again.
The method of conventional detection bar flexibility has：Ocular estimate and contact mensuration, it is inaccurate to there is detection in these methods
Really, system and human error are likely to result in, therefore in order to produce high-precision bar, mitigates the expense in process and time,
And accuracy rate is improved, propose following method：, can quickly just using the flexibility of the interference measurement bar of low-coherence light source
Victory accurately measures the flexibility of rod.
In existing technology, the result of ocular estimate can have very big difference with actual flexion degree, and this will be to actual life
Very big potential hazard is caused during production, there is measuring method in addition, its method is as follows, is fixed with chuck and treats measuring staff, then is added
At the uniform velocity rotating a circle for upper motor, the center of circle is mapped to a laser, after bar rotates a circle, and collects optical signal, is seen after data processing
The change of home position is examined, to be fitted the curve of rod bending degree.The bending of bar every bit can not be found in real time in the method
Situation, it is impossible to sample multiple spot, accuracy is not enough.
Utility model content
The purpose of this utility model, which is to provide one kind, need not contact measuring staff to be checked, and repeatedly multiple positions of bar can be surveyed
Amount, greatly improve measurement accuracy bar flexibility measurement apparatus with solve prior art presence deficiency.
The utility model is achieved through the following technical solutions utility model purpose：
A kind of flexibility measurement apparatus of bar, including light source, the fiber coupler that is connected with the light source and respectively
The reference edge, sample end and the data acquisition that are connected with the other three port of the fiber coupler and processing unit；
Light source is low-coherent light；
Fiber coupler is 2 × 2 fiber couplers, for the light beam that the light source is launched to be divided into a measuring beam
With a reference beam；
The reference edge is used for the propagation of the reference beam, including optical centre sets the first standard on the same line
Straight mirror, the first convex lens and speculum, speculum are fixed on Reflecting mirror fixing device, and the reference beam is through the first collimating mirror
Become directional light after collimation, then be reflected back again by being mapped to after the convergence of the first convex lens on speculum；
The sample end be used for the measuring beam propagation, including array of photoswitch collimator apparatus, treat measuring staff and point
Measuring staff rotary motion and movable electric rotating machine and stepper motor, the surface for treating measuring staff and photoswitch battle array Dai Dong not treated
The beam orthogonal that row collimator apparatus is projected, the measuring beam is divided into multichannel aplanatism after being collimated through array of photoswitch collimator apparatus
Light be sequentially impinged to treat the surface of measuring staff；
The data acquisition and processing unit are used to gather and handle the reference beam and measuring beam respectively in reference
Combine the picture signal of produced interference light, including second after being reflected in end and sample end in the fiber coupler again
In convex lens, diffraction grating, the 3rd convex lens, line-scan digital camera and computer, the sample end rear orientation light of measuring beam and
The reflected light of reference beam produces interference light in fiber coupler in reference edge, and interference light is become parallel by the second convex lens
Light, then light-splitting processing is carried out by diffraction grating, being then passed through the 3rd convex lens receives line-scan digital camera and gathers the letter of interference light
Number, computer is handled the signal collected.
Further, described to treat that measuring staff two ends are respectively connected with an electric rotating machine respectively, two electric rotating machines are fixed respectively
On the fixed support of both sides, support bracket fastened bottom is connected with stepper motor.
Further, the interference light signal intensity collected is fourier transformed and made by the data acquisition and processing unit
Interference light intensity signal transforms to coordinate space from the reciprocal space.
The flexibility measurement apparatus and its measuring method for the bar that the utility model is provided have advantages below：
Rod outer surface to be measured need not be touched when the 1st, measuring, it is to avoid the damage caused by measuring staff is treated in contact.
2nd, the multidraw that can be achieved to treat measuring staff is measured, and is improved measuring speed, is helped to realize industrial bulk sample
Product examine is surveyed.
3rd, the detection of bar curve is realized by weak coherent light principle of interference, detection sensitivity is high, and accuracy of detection is high
It can reach micron level.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the utility model；
Wherein：1-light source, 2-fiber coupler, 3-reference edge, the 31-the first collimating mirror, the 32-the first convex lens,
33-speculum, 34-Reflecting mirror fixing device, 35-optical fiber interface, 4-sample end, 41-array of photoswitch collimator apparatus,
42-treat measuring staff, 43-electric rotating machine, 44-stepper motor, 45-fixed support, 5-data acquisition and processing unit, 51-
Second convex lens, 52-diffraction grating, the 53-the three convex lens, 54-line-scan digital camera, 55-computer.
Embodiment
Embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.As shown in figure 1, bar is curved
Curvature measurement apparatus, including light source 1, the fiber coupler 2 that is connected with light source 1 and another three with fiber coupler 1 respectively
Reference edge 3, sample end 4 and data acquisition and processing unit 5 that individual port is connected, wherein, light source 1 is low-coherent light；Optical fiber
Coupler 2 is 2 × 2 fiber couplers, for the light beam that light source is launched to be divided into a measuring beam and a reference beam；
Reference edge 3 is used for the propagation of reference beam, including optical centre set the first collimating mirror 31 on the same line,
First convex lens 32 and speculum 33, speculum 33 are fixed on Reflecting mirror fixing device 34, and reference beam is through the first collimating mirror
Become directional light after 31 collimations, then be reflected back again by being mapped to after the convergence of the first convex lens 32 on speculum 33；
Sample end 4 is used for the propagation of measuring beam, including array of photoswitch collimator apparatus 41, treats measuring staff 42 and respectively band
It is dynamic to treat the rotary motion of measuring staff 42 and movable electric rotating machine 43 and stepper motor 44, treat the two ends of measuring staff 42 respectively respectively with one
Platform electric rotating machine 43 is connected, and two electric rotating machines 43 are separately fixed on the fixed support 45 of both sides, the bottom of fixed support 45
It is connected with stepper motor 44, treats the beam orthogonal that the surface of measuring staff 42 is projected with array of photoswitch collimator apparatus 41, measuring beam
It is divided into the surface that the aplanatic light of multichannel is sequentially impinged to treat measuring staff 42 after being collimated through array of photoswitch collimator apparatus 41；
Data acquisition and processing unit 5 are used to gather and handle reference beam and measuring beam respectively in reference edge 3 and sample
Combine the picture signal of produced interference light, including the second convex lens after being reflected in product end 4 in fiber coupler 2 again
51st, the reflected light of measuring beam and reference in diffraction grating 52, the 3rd convex lens 53, line-scan digital camera 54 and computer 55, sample end 4
The reflected light of reference beam produces interference light in fiber coupler 2 in end 3, and interference light is become parallel by the second convex lens 51
Light, then light-splitting processing is carried out by diffraction grating 52, being then passed through the 3rd convex lens 53 receives line-scan digital camera 54 and gathers interference
The signal of light, 55 pairs of signals collected of computer are handled, and data acquisition and processing unit 5 are the interference lights that will be collected
Signal intensity, which is fourier transformed, makes interference light intensity signal transform to coordinate space from the reciprocal space.
The measurement of the flexibility of bar is carried out using the flexibility measurement apparatus of above-mentioned bar, is comprised the following steps：
(1) open light source 1 and treat measuring staff emission measurement light beam and reference edge 3 to sample end 4 respectively by optical fiber coupling apparatus 2
Launch reference beam, wherein optical fiber coupling apparatus 2 are 2 × 2 fiber couplers, and light source 1 is low-coherent light；Reference edge 3 includes optics
Centrally disposed the first collimating mirror 31, the first convex lens 32 and speculum 33 on the same line, reference beam passes through an optical fiber
Become directional light after being collimated after interface 35 through the first collimating mirror 31, then by being mapped to after the convergence of the first convex lens 32 on speculum 33
It is reflected back again, sample end 4 includes array of photoswitch collimator apparatus 41, treats measuring staff 42 and drive respectively to treat that measuring staff 42 rotates
Motion and movable electric rotating machine 43 and stepper motor 44, the surface and array of photoswitch collimator apparatus 41 for treating measuring staff 42 are penetrated
The beam orthogonal gone out, measuring beam is divided into the aplanatic light of multichannel after being collimated through array of photoswitch collimator apparatus 41 and is sequentially impinged to treat
The surface of measuring staff 42.
(2) Push And Release one by one of the control array of photoswitch of computer 55 collimator apparatus 41 in data acquisition and processing unit 5,
Make measuring beam vertical irradiation on measuring staff 42 is treated；Stepper motor 44 drives and treats that measuring staff 42 moves linearly so that array of photoswitch is accurate
Straight device 41 detects that measuring staff 42 is treated in detection paragraph by paragraph, and electric rotating machine 43, which drives, treats that measuring staff 42 moves in a circle circumferentially to measure to be measured
Bar 42, thus, until the point where treating the surface of measuring staff 42 has all been detected；
(3) data acquisition and processing unit 5 record the interference signal for treating measuring staff 42, and data acquisition and processing unit 5 include
Measuring beam is anti-in second convex lens 51, diffraction grating 52, the 3rd convex lens 53, line-scan digital camera 54 and computer 55, sample end 4
The reflected light for penetrating reference beam in light and reference edge 3 produces interference light in fiber coupler 2, and the second convex lens 51 are by interference light
Become directional light, then light-splitting processing is carried out by diffraction grating 52, being then passed through the 3rd convex lens 53 makes line-scan digital camera 54 receive simultaneously
The signal of interference light is gathered, 55 pairs of signals collected of computer are handled.
(4) computer 55 receives the interference signal of line-scan digital camera 54 and fitting draws 3-D view, obtains flexibility information, tool
Body, image procossing is that the interference light signal intensity that will be collected is fourier transformed and makes interference light intensity signal from the reciprocal space
Transform to the interference light signal intensity I under coordinate space, coordinate spaceRS(z) with treating that the depth z on measuring staff surface has with ShiShimonoseki
System, is represented by：
Wherein,Z represents to treat arbitrfary point on measuring staff surface
Depth, and if only if z=zi mDuring for reflection line position, IRS(zi m)>>IRS(zi m'), zi m≠zi m', zi mRefer to rotate m angles
When i points remove reflecting surface z along the thickness direction for treating measuring staffi m' other points outside correspondence position, to ensure that the center of rotation of bar is bar
Center, defines actual detection depth zi=zi m-[(zi m)max+(zi m+π)max]/2, thus can determine whether pip depth, i.e., convex
The point and the z corresponding to smooth point for rising or being recessediValue is unequal；
Further according to ziThe difference of value may determine that the difference of flatness at a certain position of rod, if majority ziValue is different,
Then to the data measured z of a certain section of bariCarry out flexibility CI~i+ Δs iEstimation, is defined asIts
In, Δ lI~i+ Δs iIt is the horizontal length in bar i~i+ Δ i regions, max (Δ zI~Δ i) be bar i~i+ Δ i regions measurement depth
Maximum interpolation, i.e. (Δ zI~Δ i)max=(zI~Δ i)max-(zI~Δ i)min。
Above-described is only some embodiments of the present utility model.For the person of ordinary skill of the art,
On the premise of the utility model creation design is not departed from, various modifications and improvements can be made, these belong to this practicality
New protection domain.
Claims (3)
1. a kind of flexibility measurement apparatus of bar, it is characterised in that：The fiber coupling being connected including light source, with the light source
Device and reference edge, sample end and the data acquisition and processing being connected respectively with the other three port of the fiber coupler
Device；
Light source is low-coherent light；
Fiber coupler is 2 × 2 fiber couplers, for the light beam that the light source is launched to be divided into a measuring beam and one
Individual reference beam；
The reference edge is used for the propagation of the reference beam, including optical centre sets the first collimation on the same line
Mirror, the first convex lens and speculum, speculum are fixed on Reflecting mirror fixing device, and the reference beam is accurate through the first collimating mirror
Become directional light after straight, then be reflected back again by being mapped to after the convergence of the first convex lens on speculum；
The sample end is used for the propagation of the measuring beam, including array of photoswitch collimator apparatus, treats measuring staff and respectively band
Dynamic to treat measuring staff rotary motion and movable electric rotating machine and stepper motor, the surface for treating measuring staff is accurate with array of photoswitch
The beam orthogonal that straight device is projected, the measuring beam is divided into the aplanatic light of multichannel after being collimated through array of photoswitch collimator apparatus
It is sequentially impinged to treat the surface of measuring staff；
The data acquisition and processing unit be used to gathering and handle the reference beam and measuring beam respectively in reference edge and
Combine the picture signal of produced interference light, including the second convex lens after being reflected in sample end in the fiber coupler again
In mirror, diffraction grating, the 3rd convex lens, line-scan digital camera and computer, the sample end in the reflected light and reference edge of measuring beam
The reflected light of reference beam produces interference light in fiber coupler, and interference light is become directional light by the second convex lens, then by spreading out
Penetrate grating and carry out light-splitting processing, being then passed through the 3rd convex lens receives line-scan digital camera and gather the signal of interference light, computer pair
The signal collected is handled.
2. the flexibility measurement apparatus of bar according to claim 1, it is characterised in that：It is described treat measuring staff two ends respectively with one
Electric rotating machine is connected, and two electric rotating machines are separately fixed on the fixed support of both sides, support bracket fastened bottom and stepper motor
Connection.
3. the flexibility measurement apparatus of bar according to claim 1, it is characterised in that：The data acquisition and processing unit
The interference light intensity signal collected, which is fourier transformed, makes interference light intensity signal transform to coordinate space from the reciprocal space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621153331.XU CN206339204U (en) | 2016-10-31 | 2016-10-31 | The flexibility measurement apparatus of bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621153331.XU CN206339204U (en) | 2016-10-31 | 2016-10-31 | The flexibility measurement apparatus of bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206339204U true CN206339204U (en) | 2017-07-18 |
Family
ID=59299857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621153331.XU Expired - Fee Related CN206339204U (en) | 2016-10-31 | 2016-10-31 | The flexibility measurement apparatus of bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206339204U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338259A (en) * | 2016-10-31 | 2017-01-18 | 佛山科学技术学院 | Rod curvature measuring apparatus and measuring method |
| CN113218338A (en) * | 2021-05-18 | 2021-08-06 | 安徽中科米微电子技术有限公司 | Multi-point testing device and method based on autocollimator |
-
2016
- 2016-10-31 CN CN201621153331.XU patent/CN206339204U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338259A (en) * | 2016-10-31 | 2017-01-18 | 佛山科学技术学院 | Rod curvature measuring apparatus and measuring method |
| CN106338259B (en) * | 2016-10-31 | 2019-07-26 | 佛山科学技术学院 | The curvature measuring device and measuring method of bar |
| CN113218338A (en) * | 2021-05-18 | 2021-08-06 | 安徽中科米微电子技术有限公司 | Multi-point testing device and method based on autocollimator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10480926B2 (en) | Apparatus and method for generating 3-D data for an anatomical target using optical fiber shape sensing | |
| CN101738171B (en) | Apparatus and method for measuring three-dimensional shape of a wood block | |
| CN106338259B (en) | The curvature measuring device and measuring method of bar | |
| CN106643581A (en) | Glass flatness detector and detection method | |
| CN106556356A (en) | A kind of multi-angle measuring three-dimensional profile system and measuring method | |
| CN203534979U (en) | Portable metal surface defect laser scanning detection device | |
| CN104168823B (en) | Device and method for measuring blood flow velocity | |
| CN101005191A (en) | Method and its device for detecting high energy semiconductor laser divergence angle | |
| CN204831220U (en) | Calcirm -fluoride optical flat two sides depth of parallelism high accuracy testing arrangement | |
| CN103792192B (en) | Based on the polarization domain optical coherence tomography system of simple detector | |
| CN105092585A (en) | Subsurface measuring device and method based on total internal reflection and optical coherence tomography | |
| CN206339204U (en) | The flexibility measurement apparatus of bar | |
| CN103175837A (en) | Method and device for detecting defect in matrix | |
| CN104567674A (en) | Bilateral fitting confocal measuring method | |
| CN106510644B (en) | Medical optical coherence chromatographic imaging two dimension scan forward probe based on fiber optic bundle | |
| JP6921093B2 (en) | A device that performs non-contact three-dimensional inspection of machine parts with teeth | |
| CN103292731B (en) | The apparatus and method that a kind of panda type polarization-preserving fiber end face geometric parameter detects | |
| CN101469975A (en) | Optical detecting instrument and method thereof | |
| CN206063128U (en) | A kind of compound speckle noise reduction system of angle of full tunnel modulating-coding | |
| CN108507956A (en) | Water body optical attenuation coefficient measuring device and method | |
| CN204101001U (en) | A kind of belt steel thickness measuring equipment | |
| CN105716521A (en) | Device and method for enlarging measurement range of frequency domain low coherent light interference | |
| CN108662986A (en) | A kind of free form surface on-line real-time measuremen method and device | |
| CN100494985C (en) | Side shaft matter light confocal filtering method for optical coherence tomography and detecting lens | |
| CN103267490B (en) | Short coherent light many degree of depth interferometric measuring means |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170718 Termination date: 20181031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |