CN110425988A - A kind of relative laser calibrator - Google Patents
A kind of relative laser calibrator Download PDFInfo
- Publication number
- CN110425988A CN110425988A CN201910758296.6A CN201910758296A CN110425988A CN 110425988 A CN110425988 A CN 110425988A CN 201910758296 A CN201910758296 A CN 201910758296A CN 110425988 A CN110425988 A CN 110425988A
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- China
- Prior art keywords
- laser
- light
- white light
- measuring piece
- relative
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- Pending
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 20
- 239000013307 optical fiber Substances 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 13
- 239000006185 dispersion Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- -1 hand-set lid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
Abstract
The present invention relates to a kind of relative laser calibrator, including workbench, workbench has the measuring piece placement region for placing measuring piece, and measuring piece placement region is equipped with notch；Relative laser calibrator further includes two confocal displacement sensors of white light, and each confocal displacement sensor of white light includes a laser feeler, is belonging respectively to two laser feelers of two confocal displacement sensors of white light relatively and is vertically disposed on the two sides of notch.The present invention is not based on work top to the thickness measuring of part, and the warpage of work top out-of-flatness or piece surface does not influence measurement result.The present invention can greatly improve the measurement accuracy of thickness.
Description
Technical field
The present invention relates to field of optical measuring technologies, and in particular to a kind of relative laser calibrator.
Background technique
Traditional electrolimit gauge needs measuring instrument and feature contacts, and contact, which is got ready, is easy to cause collision, and beats
Point dynamics is difficult to ensure uniformly, be easy to cause measurement error.Existing list laser dotting is mainly on the basis of work top, but work
Make the contact surface warpage of table top injustice or measuring piece, it all will direct radiographic measurement result.
Summary of the invention
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of relative laser surveys that can be improved measurement accuracy
Thick instrument.
To achieve the purpose of the present invention, the present invention provides a kind of relative laser calibrator, including workbench, workbench tools
There is the measuring piece placement region for placing measuring piece, measuring piece placement region is equipped with notch；Relative laser calibrator further includes
Two confocal displacement sensors of white light, each confocal displacement sensor of white light include a laser feeler, be belonging respectively to two it is white
Two laser feelers of the confocal displacement sensor of light are opposite and are vertically disposed on the two sides of notch.
Further technical solution is that the confocal displacement sensor of white light further includes processing unit and optical fiber, optical fiber junction
Manage device and laser feeler；Processing unit includes light source, optical splitter and light receiving element, and laser feeler includes pin hole and lens group
Part；White transition to laser feeler, white light are passed through lens subassembly for providing white light, optical fiber by light source, and lens subassembly makes white light
Dispersion simultaneously focuses the light of different wave length on the outside of the head of laser side in optical axis different location；Focus on the light reflection on measuring piece surface
Across pin hole, optical fiber passes through the reflected light pass of pin hole to processing unit, and reflected light is received by optical splitter by light receiving element.
Further technical solution is that relative laser calibrator further includes display device, and display device is for showing basis
The thickness for the measuring piece that the optical oomputing that light receiving element receives obtains.
Further technical solution is that display device is also used to show what two confocal displacement sensors of white light measured respectively
Thickness of the measuring piece relative to datum level.
Further technical solution is that light source is White LED.
Further technical solution is that pin hole and lens subassembly are set gradually along the direction of propagation of white light.
Further technical solution is that relative laser calibrator includes bracket, and two laser feelers are connected on bracket, branch
Frame is equipped with guide rail, and workbench can be moved along guide rail.
Further technical solution is that workbench is horizontally disposed, and guide rail extends in the horizontal direction, two laser side head companies
It connects in the two sides up and down of workbench.
Further technical solution is that workbench is connected with sliding block, and sliding block and guide rail cooperate.
Further technical solution is that backing plate is equipped with around notch, and backing plate is for placing measuring piece.
Compared with prior art, the present invention can obtain it is following the utility model has the advantages that
1. relative laser calibrator of the invention, to the thickness for penetrating measurement part, belongs to non contact thickness gaging using double excitation, fit
It, being capable of rapid survey thickness for the thickness measure of the parts such as glass, hand-set lid, ceramic panel.With conventional contact
Calibrator is compared, and the invention avoids contacts to get ready, collides, measurement error caused by dynamics is uneven.With single laser dotting
Thickness measuring method is compared, and the present invention is not based on work top to the thickness measuring of part, and work top out-of-flatness or piece surface are stuck up
Song does not influence measurement result.The present invention can greatly improve the measurement accuracy of thickness.
2. the workbench of relative laser calibrator of the invention can be mobile relative to bracket, by mobile work platform into
And traverse measurement part, multiple positions on measuring piece can be measured, or measuring piece can be scanned.Measurement
The thickness of part can be shown by display device in time, and it is good to go back relative thickness of the measuring piece in the two sides of datum level
It shows, the thickness and bending situation of measuring piece can intuitively be shown.
3. relative laser calibrator of the invention uses the confocal displacement sensor of white light, light projector and light configuration are same
On a axis, laser work distance is 15mm, and measurement accuracy is more more acurrate than triangular laser algorithm, and not by tilt angle or reflective surface
It influences.
Detailed description of the invention
Fig. 1 is the schematic perspective view of relative laser calibrator embodiment of the present invention.
Fig. 2 is the side structure schematic diagram of relative laser calibrator embodiment of the present invention.
Fig. 3 is the structural schematic diagram of the confocal displacement sensor of white light in relative laser calibrator embodiment of the present invention.
Specific embodiment
As shown in Figure 1 to Figure 2, the relative laser calibrator of the present embodiment includes bracket 100, workbench 200 and two
The confocal displacement sensor 300 of white light.
Bracket 100 is equipped with the guide rail 110 that extends in the horizontal plane, and workbench 200 is connected with sliding block 210, sliding block 210 with
Guide rail 110 cooperates, and workbench 200 is moved along guide rail 110.Workbench 200 has the survey for placing measuring piece 400
Part placement region is measured, measuring piece placement region is equipped with notch 220, backing plate 230 is equipped with around notch 220, backing plate 230 is for placing
Measuring piece 400.The upper surface of backing plate 230 can be used as the datum level of thickness measure.
As shown in figure 3, each confocal displacement sensor 300 of white light includes laser side head 310,320 and of processing unit
Optical fiber 330.Optical fiber 330 connects processing unit 320 and laser feeler 310.Processing unit 320 includes light source 321, optical splitter 322
With light receiving element 323, laser feeler 310 includes pin hole 311 and lens subassembly 312, and pin hole 311 and lens subassembly 312 are along white light
The direction of propagation be successively set in the shell of laser feeler 310.Light source 321 is for providing white light, in the present embodiment, light source
321 be White LED.Optical fiber 330 includes that multiple optical fibers are connected by coupler, and optical fiber 330 is by white transition to laser feeler
310, white light passes through lens subassembly 312, and lens subassembly 312 makes white light dispersion and makes the light of different wave length outside laser side head 310
Side is focused in optical axis different location；The light for focusing on 400 surface of measuring piece is reflected across pin hole 311, and optical fiber 330 passes through pin hole
To processing unit 320, reflected light is received by optical splitter 322 by light receiving element 323 311 reflected light pass.Based on light member
The signal strength of each wavelength for the light that part 323 receives calculates the thickness of measuring piece 400.
Two laser feelers 310 of the confocal displacement sensor 300 of two white lights are connected on bracket 100.Two Laser Measurings
First 310 are oppositely arranged, and are vertically disposed on the two sides up and down of notch 220.
Relative laser calibrator further includes display device 500, and display device 500 connects for showing according to light receiving element 323
The measuring piece that the thickness for the measuring piece 400 that the optical oomputing received obtains and the confocal displacement sensor 300 of two white lights measure respectively
400 thickness relative to datum level.Display device 500 is desirably integrated into processing unit 320, two confocal displacement sensings of white light
The processing unit 320 of device 300 can concentrate in a device housing.For example, the survey for the plane with a thickness of 1.805mm
Part 400 is measured, display device 500 can show the following contents:
" thickness: 1.805mm
Laser A:0.000
Laser B:1.805 "
When the relative laser calibrator work of the present embodiment, workbench 200 is moved to the point that measuring piece 400 needs to measure
It sets；The software of the confocal displacement sensor 300 of white light calculates corresponding points position thickness value automatically, and shows in display device 500.
Finally it is emphasized that the above description is only a preferred embodiment of the present invention, it is not intended to restrict the invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of relative laser calibrator, including workbench, there is the workbench measuring piece for placing measuring piece to place
Region, the measuring piece placement region are equipped with notch；It is characterized by:
The relative laser calibrator further includes two confocal displacement sensors of white light, each confocal displacement sensor of white light
Including a laser feeler, it is belonging respectively to two laser feelers of two confocal displacement sensors of white light relatively and divides
It is not vertically set on the two sides of the notch.
2. a kind of relative laser calibrator according to claim 1, it is characterised in that:
The confocal displacement sensor of white light further includes processing unit and optical fiber, and the optical fiber connects the processing unit and described
Laser feeler；The processing unit includes light source, optical splitter and light receiving element, and the laser feeler includes pin hole and lens group
Part；
The white transition to the laser feeler, the white light are passed through institute for providing white light, the optical fiber by the light source
Lens subassembly is stated, the lens subassembly makes the white light dispersion and makes the light of different wave length on the outside of the laser side head in optical axis
Different location focuses；The light for focusing on the measuring piece surface is reflected across the pin hole, and the optical fiber passes through the pin hole
Reflected light pass to the processing unit, the reflected light is received by the optical splitter by the light receiving element.
3. a kind of relative laser calibrator according to claim 2, it is characterised in that:
The relative laser calibrator further includes display device, and the display device receives for showing according to the light receiving element
The obtained thickness of the measuring piece of optical oomputing.
4. a kind of relative laser calibrator according to claim 3, it is characterised in that:
The measuring piece that the display device is also used to show that two confocal displacement sensors of white light measure respectively is opposite
In the thickness of datum level.
5. a kind of relative laser calibrator according to claim 2, it is characterised in that:
The light source is White LED.
6. a kind of relative laser calibrator according to claim 2, it is characterised in that:
The pin hole and the lens subassembly are set gradually along the direction of propagation of the white light.
7. a kind of relative laser calibrator according to any one of claims 1 to 6, it is characterised in that:
The relative laser calibrator includes bracket, and two laser feeler connections on the bracket, are set on the bracket
There is guide rail, the workbench can be moved along the guide rail.
8. a kind of relative laser calibrator according to claim 7, it is characterised in that:
The workbench is horizontally disposed, and the guide rail extends in the horizontal direction, and two laser side heads are connected to the work
Make the two sides up and down of platform.
9. a kind of relative laser calibrator according to claim 7, it is characterised in that:
The workbench is connected with sliding block, and the sliding block and the guide rail cooperate.
10. a kind of relative laser calibrator according to any one of claims 1 to 6, it is characterised in that:
Backing plate is equipped with around the notch, the backing plate is for placing the measuring piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910758296.6A CN110425988A (en) | 2019-08-16 | 2019-08-16 | A kind of relative laser calibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910758296.6A CN110425988A (en) | 2019-08-16 | 2019-08-16 | A kind of relative laser calibrator |
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| Publication Number | Publication Date |
|---|---|
| CN110425988A true CN110425988A (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910758296.6A Pending CN110425988A (en) | 2019-08-16 | 2019-08-16 | A kind of relative laser calibrator |
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| Country | Link |
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| CN (1) | CN110425988A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111174704A (en) * | 2019-11-26 | 2020-05-19 | 武汉华工激光工程有限责任公司 | Method for measuring height of tin ball by gray image |
| CN112229338A (en) * | 2020-11-27 | 2021-01-15 | 中国计量科学研究院 | Double-spectrum confocal thickness measuring method without standard sheet zero alignment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9811502D0 (en) * | 1998-05-28 | 1998-07-29 | Visionix Ltd | Thickness meter for thin transparent objects |
| CN102679895A (en) * | 2012-06-11 | 2012-09-19 | 北京理工大学 | Method for measuring center thickness of reflective confocal lens |
| CN103229035A (en) * | 2010-11-30 | 2013-07-31 | 庄臣及庄臣视力保护公司 | Laser confocal sensor metrology system |
| CN206281459U (en) * | 2016-12-14 | 2017-06-27 | 常州高晟传感技术有限公司 | A kind of non-contact laser calibrator |
| CN206772237U (en) * | 2017-05-19 | 2017-12-19 | 南京鑫业诚机器人科技有限公司 | A kind of ink thickness measurement apparatus |
| US20180356208A1 (en) * | 2017-06-13 | 2018-12-13 | Keyence Corporation | Confocal Displacement Sensor |
| CN109084686A (en) * | 2017-06-13 | 2018-12-25 | 株式会社基恩士 | confocal displacement sensor |
| CN210513028U (en) * | 2019-08-16 | 2020-05-12 | 宾努克斯科技（佛山）有限公司 | Relative laser thickness gauge |
-
2019
- 2019-08-16 CN CN201910758296.6A patent/CN110425988A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9811502D0 (en) * | 1998-05-28 | 1998-07-29 | Visionix Ltd | Thickness meter for thin transparent objects |
| CN103229035A (en) * | 2010-11-30 | 2013-07-31 | 庄臣及庄臣视力保护公司 | Laser confocal sensor metrology system |
| CN102679895A (en) * | 2012-06-11 | 2012-09-19 | 北京理工大学 | Method for measuring center thickness of reflective confocal lens |
| CN206281459U (en) * | 2016-12-14 | 2017-06-27 | 常州高晟传感技术有限公司 | A kind of non-contact laser calibrator |
| CN206772237U (en) * | 2017-05-19 | 2017-12-19 | 南京鑫业诚机器人科技有限公司 | A kind of ink thickness measurement apparatus |
| US20180356208A1 (en) * | 2017-06-13 | 2018-12-13 | Keyence Corporation | Confocal Displacement Sensor |
| CN109084686A (en) * | 2017-06-13 | 2018-12-25 | 株式会社基恩士 | confocal displacement sensor |
| CN210513028U (en) * | 2019-08-16 | 2020-05-12 | 宾努克斯科技（佛山）有限公司 | Relative laser thickness gauge |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111174704A (en) * | 2019-11-26 | 2020-05-19 | 武汉华工激光工程有限责任公司 | Method for measuring height of tin ball by gray image |
| CN112229338A (en) * | 2020-11-27 | 2021-01-15 | 中国计量科学研究院 | Double-spectrum confocal thickness measuring method without standard sheet zero alignment |
| CN112229338B (en) * | 2020-11-27 | 2022-05-17 | 中国计量科学研究院 | Double-spectrum confocal thickness measuring method without standard sheet zero alignment |
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