CN109470167A - A kind of surface scratch depth calibrator and measurement method - Google Patents
A kind of surface scratch depth calibrator and measurement method Download PDFInfo
- Publication number
- CN109470167A CN109470167A CN201811612142.8A CN201811612142A CN109470167A CN 109470167 A CN109470167 A CN 109470167A CN 201811612142 A CN201811612142 A CN 201811612142A CN 109470167 A CN109470167 A CN 109470167A
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- CN
- China
- Prior art keywords
- scratch depth
- laser
- line array
- array ccd
- detection system
- 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.)
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Classifications
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- 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
- G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth
Abstract
The invention discloses a kind of surface scratch depth calibrator and measurement methods, it solves the problems, such as that scratch depth measurement accuracy is not high in the prior art, with surface scratch measurement is carried out on the basis of not causing secondary damage to gear shaft, the effect of accuracy of measurement and precision is improved；Its technical solution are as follows: including laser detection system, control system, laser detection system is received through Laser Triangulation Measurement System Based by line array CCD for acquiring scratch depth information, including laser emitter, line array CCD, the light beam that laser emitter issues；Picture signal is transmitted to processor and handled by line array CCD, to obtain the most deep scratch depth value of pinion shaft；Control system includes the electronic slide unit for driving laser detection system to move up and down, the driving device for driving laser detection system to circle.
Description
Technical field
The present invention relates to field of measuring technique more particularly to a kind of surface scratch depth calibrator and measurement methods.
Background technique
During motor train unit train high-speed cruising and during train routine inspection, it may appear that part and part it
Between friction and collision so that scratch occurs in the pinion shaft surface on bogie, the scratch is once more than 0.2mm, the gear
Axis will be scrapped.
The relationship between quality of rail car axle is the premise for guaranteeing passenger safety to the safety traffic of motor-car, and motor-car daily will
It travelling multiple hours, the various axial workpieces on motor-car bear complicated stress and torque in operation, once occur small stroke
Trace will will lead to the rupture of axis, influence the normally travel of motor-car, or even jeopardize the safety of passenger.Not only in motor-car, there are many more
Will guarantee on precision machinery the surface of part without too deep scratch, such as the axial workpiece on ship, the main shaft etc. on automobile
It requires not destroy in the case where running at high speed, it is seen that in assembly, the quality of detection part is very important.
Ocular estimate is mostly used to estimate greatly at present, this method needs special technical staff and subjective factor influences greatly, to be easy
It causes to judge by accident, causes more serious economic loss.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of surface scratch depth calibrator and measurement method,
It has carries out surface scratch measurement on the basis of not causing secondary damage to gear shaft, improves accuracy of measurement and precision
Effect.
The present invention adopts the following technical solutions:
A kind of surface scratch depth calibrator, comprising:
Laser detection system, for acquiring scratch depth information, including laser emitter, line array CCD, laser emitter hair
Light beam out is received through Laser Triangulation Measurement System Based by line array CCD；Picture signal is transmitted at processor by line array CCD
Reason, to obtain the most deep scratch depth value of pinion shaft；
Control system, including for drive laser detection system move up and down electronic slide unit, for driving laser detection
The driving device that system circles.
Further, the Laser Triangulation Measurement System Based includes collector lens, receiving lens and optical filter, laser emitter
The light beam of sending is beaten through aperture grating and collector lens to pinion shaft surface, passes through receiving lens and optical filter after diffusing reflection
To line array CCD display position.
Further, the electronic slide unit is connected by connection frame with pinion shaft, the connection frame with laser is installed
The structure stand of detection system is connected.
Further, the electronic slide unit is vertical with plane locating for laser detection system.
Further, the driving device includes stepper motor and retarder, and stepper motor is used for by retarder connection
Drive the gear mechanism of connection frame rotation.
Further, the stepper motor is by PLC and close to switch control start and stop.
Further, the processor is main frame, and main frame connects display.
Further, the laser detection system connects data collection system, and the data collection system includes and linear array
CCD connected Acquisition Circuit and signal amplification circuit.
The measurement method of surface scratch depth calibrator are as follows:
Start stepper motor, stepper motor running speed is changed by retarder, drives laser to acquire using gear mechanism
System is rotated along pinion shaft, and close to closing the switch after rotating a circle, stepper motor stops working；
Laser acquisition system acquires scratch depth information: the light beam issued from laser emitter is through aperture grating and optically focused
Lens are beaten to normal surface A, through diffusing reflection by receiving lens and optical filter, there is a band of position A ' on line array CCD；
Light beam is beaten through aperture grating and collector lens to scratch B, is had on line array CCD after diffusing reflection by receiving lens and optical filter
One band of position B ' calculates the alternate position spike on line array CCD, so that it is determined that scratch depth value.
Further, the alternate position spike between band of position A ' and band of position B ', that is, pixel number, by determining pixel
Number calculates the alternate position spike on line array CCD, converts digital information for image element information through background process and exports, reads
Number, that is, scratch depth of display.
Compared with prior art, the beneficial effects of the present invention are:
(1) laser detection system of the present invention can be moved up and down and be rotated, and arrive optimal acquisition position convenient for adjusting, raising is adopted
Collect precision；The threaded hole that equipment bottom end need to only be screwed in pinion gear when detection, on the basis for not causing secondary damage to gear shaft
Upper progress surface scratch measurement；
(2) present invention uses the basic principle of direct-injection type laser triangulation, by determining that pixel number is calculated in line array CCD
On alternate position spike, so that it is determined that scratch depth value, can be improved accuracy of measurement and precision.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is composition block diagram of the invention；
Fig. 2 is Laser Triangulation Measurement System Based schematic diagram of the invention；
Fig. 3 is drive circuit functionality block diagram of the invention；
Fig. 4 is control system architecture schematic diagram of the invention；
Fig. 5 is Control system architecture front view of the invention；
Fig. 6 is of the invention close to switch structure diagram；
Fig. 7 is TCD1501D pin distribution map of the invention；
Fig. 8 is TCD1501D circuit diagram of the invention；
Fig. 9 is PLC program ladder diagram of the invention；
Wherein, 1, processor, 2, display, 3, laser detection system, 4, data collection system, 5, control system, 6, swash
Optical transmitting set, 7, line array CCD, 8, Acquisition Circuit, 9, signal amplification circuit, 10, main frame, 11, stepper motor, 12, knot
Structure bracket, 13, electronic slide unit, 14, retarder, 15, aperture grating, 16, collector lens, 17, receiving lens, 18, optical filter,
19, rolling bearing, 20, connection frame, 21, pinion shaft, 22, close switch, 23, shaft.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, the not high deficiency of scratch depth measurement accuracy exists in the prior art, to understand
Technical problem certainly as above, present applicant proposes a kind of surface scratch depth calibrator and measurement methods.
In a kind of typical embodiment of the application, as shown in figs. 1-9, a kind of surface scratch depth measurement is provided
Instrument, mainly for the detection of 21 scratch depth of high-speed rail motor-car pinion shaft, including laser detection system 3, control system 5, data
Acquisition system 4, processor 1 and display 2, laser detection system 3 can move up and down and revolve under control of the control system 5
Turn.
Control system 5 includes electronic slide unit 13 and driving device, as shown in figure 4, the driving device includes stepper motor
11 and retarder 14, stepper motor 11 passes through 14 connection gear mechanism of retarder；4, stepper motor 11 is reduced by retarder 14
Revolving speed improves torque.
The gear mechanism is connected with shaft 23, and shaft 23 is connect with pinion shaft 21 with screw pair, stepper motor 11, electricity
Dynamic slide unit 13 and retarder 14 etc. are bolted on structure stand 12.Pass through stepper motor 11, retarder 14 and gear
Mechanism driving makes to rotate centered on pinion shaft 21 with shaft 23 by the structure stand 12 that rolling bearing 19 is connected.
Electronic slide unit 13 is installed on driving device side, and electronic slide unit 13 is connected by bolt with structure stand 12, connects
Frame 20 is connected by bolt with structure stand 12.Laser detection system 3 is installed on connecting rod 20, makes laser detection system 3
In 21 side of pinion shaft.
The electronic slide unit 13 is vertical with plane locating for laser detection system 3.
The stepper motor 11 controls start and stop by PLC and close to switch 22, and driving circuit is as shown in Figure 3.
In some embodiments, PLC selects Mitsubishi PLC.
PLC program ladder diagram is as shown in Figure 9.
The laser detection system includes laser emitter 6, Laser Triangulation Measurement System Based, line array CCD 7, laser emitter 6
The light beam of sending is received through Laser Triangulation Measurement System Based by line array CCD 7；Line array CCD 7 by picture signal be transmitted to processor 1 into
Row processing, to obtain the most deep scratch depth value of pinion shaft 21.
As shown in Fig. 2, Laser Triangulation Measurement System Based includes collector lens 16, receiving lens 17 and optical filter 18, laser hair
Point-blank, receiving lens 17 and 18 place straight line of optical filter and optically focused are saturating for emitter 6, aperture grating 15, collector lens 16
Acute angle is formed between 16 place straight line of mirror；Line array CCD 7 is obliquely installed in optical filter 18 far from 17 side of receiving lens.
Further, the processor 1 is main frame 10, and main frame 10 connects display 2.
The laser detection system 3 connects data collection system 4, and the data collection system 4 includes and 7 phase of line array CCD
Acquisition Circuit 8 even and signal amplification circuit 9, use TCD1501D circuit module, as shown in Figure 7 and Figure 8.
Between 0.05mm -0.5mm, measurement accuracy is the measurement range of the application surface scratch depth calibrator
0.05mm。
The measurement method of surface scratch depth calibrator are as follows:
Start button is pressed, PLC starts to work, and starts stepper motor 11, changes stepper motor 11 by retarder 14 and transports
Rotary speed improves torque；It drives laser acquisition system 3 to rotate along pinion shaft 21 using gear mechanism, is followed by when rotating a circle
Nearly switch 16 is closed, and stepper motor 11 stops working.
Laser acquisition system 3 acquires scratch depth information:
The light beam issued from laser emitter 3 is beaten to normal surface and (is not occurred through aperture grating 15 and collector lens 16
The surface of scratch) after A, through diffusing reflection by receiving lens 17 and optical filter 18, there is a band of position A ' on linear array CCD7；
Light beam is beaten through aperture grating 15 and collector lens 16 to scratch B, passes through receiving lens 17 and optical filtering after diffusing reflection
Piece 18 has a band of position B ' on linear array CCD7, there is certain alternate position spike between band of position A ' and band of position B ', the position
Setting poor essence is pixel number, i.e., determines scratch depth value by determining that pixel number calculates the alternate position spike on linear array CCD7.
It converts digital information for image element information through the processing of processor 1 to export, the number of the display 2 read is i.e.
Scratch depth.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of surface scratch depth calibrator characterized by comprising
Laser detection system, for acquiring scratch depth information, including laser emitter, line array CCD, what laser emitter issued
Light beam is received through Laser Triangulation Measurement System Based by line array CCD；Picture signal is transmitted to processor and handled by line array CCD, with
Obtain the most deep scratch depth value of pinion shaft；
Control system, including for drive laser detection system move up and down electronic slide unit, for driving laser detection system
The driving device circled.
2. a kind of surface scratch depth calibrator according to claim 1, which is characterized in that the laser triangulation system
System include collector lens, receiving lens and optical filter, laser emitter issue light beam through aperture grating and collector lens beat to
Pinion shaft surface passes through receiving lens and optical filter to line array CCD display position after diffusing reflection.
3. a kind of surface scratch depth calibrator according to claim 1, which is characterized in that the electronic slide unit passes through company
It connects frame to be connected with pinion shaft, the connection frame is connected with the structure stand for being equipped with laser detection system.
4. a kind of surface scratch depth calibrator according to claim 3, which is characterized in that the electronic slide unit and laser
Plane locating for detection system is vertical.
5. a kind of surface scratch depth calibrator according to claim 1, which is characterized in that the driving device includes step
Into motor and retarder, stepper motor connects the gear mechanism for driving connection frame to rotate by retarder.
6. a kind of surface scratch depth calibrator according to claim 5, which is characterized in that the stepper motor is by PLC
With close to switch control start and stop.
7. a kind of surface scratch depth calibrator according to claim 1, which is characterized in that the processor is computer
Host, main frame connect display.
8. a kind of surface scratch depth calibrator according to claim 1, which is characterized in that the laser detection system connects
Data collection system is connect, the data collection system includes the Acquisition Circuit being connected with line array CCD and signal amplification circuit.
9. the measurement method of -8 any a kind of surface scratch depth calibrators according to claim 1, which is characterized in that
Start stepper motor, stepper motor running speed is changed by retarder, drives laser acquisition system using gear mechanism
It is rotated along pinion shaft, close to closing the switch after rotating a circle, stepper motor stops working；
Laser acquisition system acquires scratch depth information: the light beam issued from laser emitter is saturating through aperture grating and optically focused
Mirror is beaten to normal surface A, through diffusing reflection by receiving lens and optical filter, there is a band of position A ' on line array CCD；Light
Beam is beaten through aperture grating and collector lens to scratch B, has one on line array CCD by receiving lens and optical filter after diffusing reflection
Band of position B ' calculates the alternate position spike on line array CCD, so that it is determined that scratch depth value.
10. a kind of measurement method of surface scratch depth calibrator according to claim 9, which is characterized in that position area
Alternate position spike, that is, pixel number between domain A ' and band of position B ', by determining that pixel number calculates the position on line array CCD
Difference converts digital information for image element information through background process and exports, the number of the display read i.e. scratch depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811612142.8A CN109470167A (en) | 2018-12-27 | 2018-12-27 | A kind of surface scratch depth calibrator and measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811612142.8A CN109470167A (en) | 2018-12-27 | 2018-12-27 | A kind of surface scratch depth calibrator and measurement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109470167A true CN109470167A (en) | 2019-03-15 |
Family
ID=65676739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811612142.8A Withdrawn CN109470167A (en) | 2018-12-27 | 2018-12-27 | A kind of surface scratch depth calibrator and measurement method |
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| Country | Link |
|---|---|
| CN (1) | CN109470167A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360946A (en) * | 2019-07-24 | 2019-10-22 | 华中科技大学 | A kind of device and method measuring Object Depth |
-
2018
- 2018-12-27 CN CN201811612142.8A patent/CN109470167A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360946A (en) * | 2019-07-24 | 2019-10-22 | 华中科技大学 | A kind of device and method measuring Object Depth |
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Application publication date: 20190315 |