CN109556519A - A kind of extension deforming high precision measuring device and method - Google Patents
A kind of extension deforming high precision measuring device and method Download PDFInfo
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- CN109556519A CN109556519A CN201811320334.1A CN201811320334A CN109556519A CN 109556519 A CN109556519 A CN 109556519A CN 201811320334 A CN201811320334 A CN 201811320334A CN 109556519 A CN109556519 A CN 109556519A
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- link block
- displacement sensor
- optical fibre
- test specimen
- pedestal
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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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
Abstract
The present invention proposes that a kind of extension deforming high precision measuring device and method, described device include pedestal, vertical quartz column, top link block, horizontal quartz column, middle part link block and optical fibre displacement sensor；Optical fibre displacement sensor is positioned and calibrated using vertical quartz column, top link block, horizontal quartz column and middle part link block.The present invention, which is expanded with heat and contract with cold using devitrified glass or quartz column because of temperature change, changes small characteristic, which can effectively measure the small extension deflection of small size part.Test specimen uses the installation method of vertical feet simultaneously, and measurement table top and surface of test piece contact area reduce, and can reduce between pedestal and test specimen because of error caused by friction.The device and method simple process, it is easy to operate, have many advantages, such as low cost, short route, efficiently it is convenient, be easy to heavy industrialization application.
Description
Technical field
The invention belongs to shot-peening extension deflection fields of measurement, and in particular to a kind of extension deforming high precision measuring device and
Method.
Background technique
Contour peening is a kind of advanced forming technique, and part can be made to bend and extend, but due to part extensible extent
It is extremely small, it is difficult to measure, only part size is sufficiently large, and common detection methods could be used to measure its extensible extent size.Again
Because large-scale part difficulty of processing is big, at high cost, large scale experiment not can be carried out, so at present to shot-peening extension quantity research
Seldom.Therefore, large-scale part shot-peening extensible extent is easy to appear dimension overproof.When sample dimensions are in 200mm or so, shot-peening
Extensible extent is shaped at 2 μm or so, existing measurement means are difficult to keep high accuracy under so big range, and by
In test specimen there are thermal expansion and contraction, temperature change not only influences sample dimensions, also will affect the stability of measuring system.Cause
This needs proposes a kind of new measurement method and measuring system, reduces influence of the temperature influence to shot-peening extension deformation, and can
Carry out the deformation progress high-acruracy survey that extends to shot-peening.
Document 1 " Chinese invention patent that Authorization Notice No. is CN102410818B " discloses quilt in a kind of high-low temperature chamber
Survey the high precision measuring system of deflection.The high precision measuring system includes swashing for cord, three-dimensional air floating component and three directions
Light is displaced photoelectric coding measurement module.Connect measured piece by cord, hang under cord small mass block guarantee rope vertically to
Under.Since rope stress is constant, rope length does not change in the whole process.It is connected using air bearing component and is hanged under rope
The mass block of extension allows small mass block measured piece can be followed to move in tri- direction friction frees of x, y and z, passes through small mass block
Motion profile obtain the small movements track of measured piece.The high precision measuring system is complicated, and part is not in measurement process
In the presence of disassembly situation, it is difficult to apply to the measurement of extension deforming high precision.
Document 2 " Chinese utility model patent that Authorization Notice No. is CN202836431U " discloses a kind of based on standard
The large scale high precision measuring device of ruler.The device differs biggish material using two kinds of thermal expansion coefficients and gauge is made, this
Two kinds of gauge one end are fixed, the other end can free wxpansion, they are demarcated under normal temperature.Two gauges
It is mounted in measuring device, since their thermal expansion coefficient is different, when temperature change, reading head be can measure in measuring device
Size after the expansion of two gauges is poor.It according to the dimension difference of gauge, is modified to measuring size, to improve ruler
Very little measurement accuracy.The high precision measuring device is measured to entire part size, and shot-peening extension is not achieved in measurement accuracy
The measurement accuracy of deformation requirements.
When in the prior art using optical fibre displacement sensor measurement test specimen, using the form of horizontal positioned test specimen, that is, test
The horizontal distance of optical fibre displacement sensor and test specimen, test specimen extension deformation is atomic small variation, therefore places the measurement of test specimen
The friction of table top can measure test piece deformation and generate error, cause measurement not accurate.
Material used by the fixing tool or fixture of optical fibre displacement sensor in the prior art simultaneously, can be cold because of heat expansion
Contracting or other environmental factors generate error, not accurate so as to cause measuring.
Summary of the invention
Technical problems to be solved:
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of extension deforming high precision measuring device and side
Method is expanded with heat and contract with cold because of temperature change using devitrified glass or quartz column and changes small characteristic, which can effectively measure small
The small extension deflection of size parts.Test specimen uses the installation method of vertical feet simultaneously, and measurement table top is contacted with surface of test piece
Area reduces, and can reduce between pedestal and test specimen because of error caused by friction.The device and method simple process,
It is easy to operate, have many advantages, such as low cost, short route, efficiently it is convenient, be easy to heavy industrialization application.
The technical scheme is that a kind of extension deforming high precision measuring device, it is characterised in that: including pedestal, erect
Straight quartz column, top link block, horizontal quartz column, middle part link block and optical fibre displacement sensor；
The pedestal is plate structure；The top link block and middle part link block are column structure, center axis thereof
It is arranged in parallel；Two top link blocks are parallel and are oppositely arranged, and plane where center axis thereof is parallel to the pedestal,
Two top link blocks are fixed on above the pedestal by the vertical quartz column；The vertical quartz column is vertical
It is fixed on the pedestal, top passes through the first through hole on the top link block, enables two top link blocks
It is enough to be moved axially along the vertical quartz column, and fixed by fastening screw；Two horizontal quartz columns are parallel to each other and hang down
Directly in the top link block, both ends are each passed through the second through-hole being arranged on two top link block opposite faces, and
It is fixed by fastening screw；Second through-hole and is parallel to the bottom perpendicular to the central axis of the top link block
Seat；The middle part link block is arranged in parallel between two top link blocks, and two horizontal quartz columns pass through described
Third through-hole on the link block of middle part enables the middle part link block to move axially along the horizontal quartz column, and by tight
Gu screw is fixed；The third through-hole and is parallel to the pedestal perpendicular to the central axis of the middle part link block；
The pedestal is provided with through-hole on the middle part link block, for installing the optical fibre displacement sensor,
And it is fixed by fastening screw；The base upper surface is fixed with test specimen fixed block, for test specimen to be perpendicularly fixed at the bottom
On seat.
A further technical solution of the present invention is: the top link block and middle part link block are the identical length of outer dimension
Cube, and all use stainless steel material；
A further technical solution of the present invention is: the pedestal is rectangular parallelepiped structure, both ends upper surface is respectively arranged with
Groove, the installation for bottom link block；The bottom link block is rectangular parallelepiped structure, is set perpendicular to center axis thereof direction
It is equipped with through-hole, for the vertical quartz column to be fixedly mounted, makes the vertical quartz column perpendicular to the pedestal.
It is installed in parallel a further technical solution of the present invention is: multiple middle part link blocks pass through the horizontal quartz column
Between two top link blocks, it is mounted on optical fibre displacement sensor on each middle part link block, can be realized
The test of multiple test specimens.
A further technical solution of the present invention is: the test specimen fixed block is L-type plate structure, two test specimens are fixed
Block is oppositely arranged, and test specimen bottom end is fixed between two test specimen fixed blocks by fastening screw, guarantees that the test specimen hangs down
It is directly fixed on the pedestal.
A further technical solution of the present invention is: the top link block, middle part link block, vertical quartz column and level
Quartz column is devitrified glass.
A kind of test method using extension deforming high precision measuring device, it is characterised in that specific step is as follows:
Step 1, high-low temperature tester set temperature: high/low temperature is set according to optical fibre displacement sensor measurement temperature
Testing machine temperature guarantees that repeatedly measurement temperature is consistent；
Step 2, the calibration optical fibre displacement sensor are at a distance from standard component: measure the optical fibre displacement sensor with
Distance between the standard component upper surface, repeatedly measurement is averaged；The standard component is rectangular plate-like structure；
Step 3, the measurement optical fibre displacement sensor are at a distance from test specimen: according to measurement standard, measuring the optical fiber position
Displacement sensor is at a distance from test specimen；Measure test specimen during, according to optical fibre displacement sensor described in same time interval measurement with
The distance of the standard component, determines the extension deforming high precision measuring device stability, and with the optical fibre displacement sensor
Distance is compared between standard component；
Step 4, the measurement optical fibre displacement sensor are at a distance from test specimen after bead: according to measurement standard, measurement
The optical fibre displacement sensor is at a distance from test specimen after bead, according to same time interval measurement during measurement test specimen
The optical fibre displacement sensor and the standard component distance are determined from the extension deformation measuring system stability；
Step 5, calculation testing piece extension deflection: with the optical fibre displacement sensor and test specimen initial distance and the optical fiber
Displacement sensor and standard component correspond at a distance from test specimen after subtracting the optical fibre displacement sensor and bead apart from its difference
With the optical fibre displacement sensor and standard component apart from its difference to get test specimen extension deflection.
Beneficial effect
The beneficial effects of the present invention are: a kind of extension deforming high precision measuring device of the present invention is using quartz column as whole
The support construction of a device, while optical fibre displacement sensor is positioned using the middle part link block of stainless steel material, avoid Yin Wen
Error caused by degree variation is expanded with heat and contract with cold, the device can accurately measure the small extension deflection of test specimen.The top connection
Block, middle part link block, vertical quartz column and horizontal quartz column all use devitrified glass, can further decrease temperature change pair
The error of test specimen extension deflection measurement.
After extension deforming high precision measuring device each section component of the present invention assembles, test specimen is perpendicularly fixed at pedestal
On, it can guarantee that the optical fibre displacement sensor is vertical with test specimen upper surface, avoid because of measurement table top and surface of test piece contact surface
The friction effects measurement result that product is big and generates can guarantee each to reduce error, and when temperature changes on a small quantity
Members deformation is negligible, reaches the high-acruracy survey purpose to deformation of extending.
The present invention uses the test method of extension deforming high precision measuring device, using optical fibre displacement sensor and standard component
Measured value be compared with the measured value before and after test specimen bead, avoid whole device in measurement process and be easy to appear
Because of the unstable situation of measuring system caused by temperature fluctuation, and it is likely to occur optical fibre displacement sensor position in measurement process twice
Set variation as a result, therefore with the change in location of standard component calibration optical fibre displacement sensor.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of extension deforming high precision measuring device of the present invention.
Fig. 2 is schematic diagram of base structure of the present invention.
Fig. 3 is connecting block structure schematic diagram in bottom of the present invention.
Fig. 4 is connecting block structure schematic diagram at the top of the present invention.
Fig. 5 is connecting block structure schematic diagram in the middle part of the present invention.
Fig. 6 is optical fibre displacement sensor structural schematic diagram of the invention.
Description of symbols: 1- pedestal；The bottom 2- link block；The vertical quartz column of 3-；Link block at the top of 4-；The vertical stone of 5-
Ying Zhu；Link block in the middle part of 6-；7- optical fibre displacement sensor；8- standard component, 9- fastening screw.
Specific embodiment
The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to be used to explain the present invention, and cannot understand
For limitation of the present invention.
Referring to Fig.1-5.The present invention it is a kind of using extension deforming high precision measuring device include pedestal 1, bottom link block 2,
Vertical quartz column 3, top link block 4, horizontal quartz column 5, middle part link block 6, optical fibre displacement sensor 7, calibrated bolck 8 and tight
Gu screw 9.The rectangular parallelepiped structure that the pedestal 1 is made of stainless steel, short side direction both ends are arranged in parallel with to be connected with the bottom
The groove of the cooperation of block 2 is connect, two inside grooves are each provided with two through-holes, and symmetrical, described vertical for fixing
Quartz column 3, so that four 3 two one group of vertical quartz columns are installed vertically on 1 both ends of pedestal；
The bottom link block 2 is cuboid made of stainless steel, carries out positioning and school with 1 groove of pedestal cooperation
Standard, two bottom link blocks 2 respectively pass through one group of vertical quartz column 3, installation with the groove in, for fixing vertical quartz column
3；The vertical quartz column 3 and the horizontal quartz column 5 are since thermal expansion coefficient is minimum, for reducing temperature to measuring system
It influences, and supports entire measuring device；The top link block 4 is cuboid made of stainless steel, with the bottom link block
2 and the middle part link block 6 cooperation positioned and calibrated.
Two top link blocks 4 are parallel and are oppositely arranged, and plane where center axis thereof is parallel to the pedestal, and four
Vertical quartz column 3 is each passed through the first through hole on two top link blocks 4 perpendicular to pedestal setting, so that two tops
Portion's link block 4 can be moved axially along the vertical quartz column 3, for determining optimum measurement height.Two top connections
The second through-hole for being parallel to pedestal 1 is oppositely arranged on the opposite face of block 4, two horizontal quartz columns 5 arranged in parallel are worn
The second through-hole of top link block 4 is crossed, and fixed by fastening screw 9, axis of the horizontal quartz column 5 perpendicular to top link block 4
To；Middle part link block 6 is cuboid made of stainless steel, is carried out with top link block 4 and bottom link block 2 with merging calibration；
Middle part link block 6 is arranged in parallel between two top link blocks 4, and is parallel to through-hole there are two the settings of pedestal 1, horizontal stone
English column 5 passes through described two through-holes, makes middle part link block 6 and can move axially along horizontal quartz column 5, best for determining
Horizontal measurement position.
Optical fibre displacement sensor 7 is installed on middle part link block 6 perpendicular in the through-hole of pedestal, is consolidated by fastening screw 9
It is fixed；7 measurement accuracy of optical fibre displacement sensor cooperates with the middle part link block 6 up to 0.1 μm and carries out precise measurement, uses
In the spacing of measurement test specimen and 7 end of optical fibre displacement sensor；The calibrated bolck 8 is made of the identical material of institute's test block,
Specification is identical as institute's test block, and guarantees that both ends roughness is consistent with test specimen.
1 upper surface middle part of pedestal is provided with L shape protrusion, positions as test specimen locating piece to test specimen.
A kind of extension deforming high precision measuring system provided by the present invention can guarantee the optical fibre displacement sensor 7 with
The vertical feature in test specimen upper surface, technical solution is: test specimen is vertically placed on 1 upper surface of pedestal, and fixed using L shape
Position block is positioned, and guarantees that upper surface is horizontal.After the vertical quartz column 3 is assembled with the bottom link block 2, it is mounted on
In 1 grooves on two sides of pedestal, guarantee that the 1 two sides quartz column 3 of pedestal is vertical.It is orthogonal in the top link block 4
Two pairs of through-holes cooperate with the vertical quartz column 3 and the horizontal quartz column 5 respectively, the top link block 4 with it is described vertical
After quartz column 3 assembles and determines optimum measurement height, it can guarantee to match in the top link block 4 with the horizontal quartz column 5
The through-hole of conjunction is horizontal, that is, guarantees that the horizontal quartz column 5 is horizontal.In middle part link block 6 orthogonal through-hole respectively with it is described
Horizontal quartz column 5 and the optical fibre displacement sensor 7 cooperate, and the middle part link block 6 assembles simultaneously with the horizontal quartz column 5
After determining optimum level measurement position, guarantees that the optical fibre displacement sensor 7 is vertical, that is, guarantee the optical fibre displacement sensor 7
It is vertical with test specimen upper surface.
The present invention also provides a kind of extension deforming high precision measurement methods, it is characterised in that the following steps are included:
1, high-low temperature tester set temperature: high/low temperature is set according to the 7 optimum measurement temperature of optical fibre displacement sensor
Testing machine temperature guarantees that repeatedly measurement temperature is almost the same；
2, the optical fibre displacement sensor 7 and 8 distance of standard component are demarcated: measure the optical fibre displacement sensor 7 with
Distance between the standard component 8, repeatedly measurement is averaged；
3, the optical fibre displacement sensor 7 is measured with each test specimen distance: according to measurement standard, measuring the fiber optics displacement
The distance between sensor 7 and each test specimen, measurement test specimen is in the process according to method using in optic fiber displacement sensor described in same time interval measurement
Device 7 and 8 distance of standard component determine from the extension deformation measuring system stability, and with the optical fibre displacement sensor
Distance is compared between 7 and standard component；
4, the optical fibre displacement sensor 7 and each test specimen distance after bead are measured: according to measurement standard, measuring institute
Optical fibre displacement sensor 7 is stated at a distance from test specimen each after bead, according to same time interval measurement during measurement test specimen
The optical fibre displacement sensor 7 and 8 distance of standard component, determine from the extension deformation measuring system stability；
5, each test specimen extension deflection is calculated: with the optical fibre displacement sensor 7 and test specimen initial distance and the optical fiber
Displacement sensor 7 and standard component 8 apart from its difference, subtract correspond to after the optical fibre displacement sensor 7 and bead test specimen away from
From with its difference with a distance from the optical fibre displacement sensor 7 and standard component 8 to get test specimen extension deflection.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (7)
1. a kind of extension deforming high precision measuring device, it is characterised in that: including pedestal, vertical quartz column, top link block, water
Flat quartz column, middle part link block and optical fibre displacement sensor；
The pedestal is plate structure；The top link block and middle part link block are column structure, and center axis thereof is parallel
Setting；Two top link blocks are parallel and are oppositely arranged, and plane where center axis thereof is parallel to the pedestal, pass through institute
It states vertical quartz column two top link blocks are fixed on above the pedestal；The vertical quartz column is perpendicularly fixed at institute
It states on pedestal, top passes through the first through hole on the top link block, enables two top link blocks along described
Vertical quartz column axial movement, and fixed by fastening screw；Two horizontal quartz columns are arranged in parallel on the bottom plate
Side, and be parallel to each other and perpendicular to the top link block, both ends are each passed through on two top link block opposite faces
The second through-hole being arranged, and fixed by fastening screw；Second through-hole perpendicular to the top link block central axis,
And it is parallel to the pedestal；The middle part link block is arranged in parallel between two top link blocks, two levels
Quartz column pass through the middle part link block on third through-hole, enable the middle part link block along the horizontal quartz axis of a cylinder to
It is mobile, and fixed by fastening screw；The third through-hole and is parallel to institute perpendicular to the central axis of the middle part link block
State pedestal；
The pedestal is provided with through-hole on the middle part link block, for installing the optical fibre displacement sensor, and leads to
Cross the fixed optical fibre displacement sensor of fastening screw；The base upper surface is fixed with test specimen fixed block, for test specimen to hang down
It is directly fixed on the pedestal.
2. extension deforming high precision measuring device according to claim 1, it is characterised in that: the top link block and middle part
Link block is the identical cuboid of outer dimension, and all uses stainless steel material.
3. extension deforming high precision measuring device according to claim 1, it is characterised in that: the pedestal is cuboid knot
Fluted installation for bottom link block is respectively set in structure, both ends upper surface；The bottom link block is cuboid knot
Structure is provided with through-hole perpendicular to center axis thereof direction, for the vertical quartz column to be fixedly mounted, makes the vertical quartz column
Perpendicular to the pedestal.
4. extension deforming high precision measuring device according to claim 1, it is characterised in that: multiple middle part link blocks are worn
It crosses the horizontal quartz column to be parallelly mounted between two top link blocks, be mounted on each middle part link block
Optical fibre displacement sensor can be realized the test of multiple test specimens.
5. extension deforming high precision measuring device according to claim 1, it is characterised in that: the test specimen fixed block is L-type
Plate structure, two test specimen fixed blocks are oppositely arranged, and two test specimens are fixed in test specimen bottom end by fastening screw
Between fixed block, guarantee that the test specimen is perpendicularly fixed on the pedestal.
6. extension deforming high precision measuring device according to claim 1, it is characterised in that: the top link block, middle part
Link block, vertical quartz column and horizontal quartz column are devitrified glass.
7. a kind of test method using extension deforming high precision measuring device described in claim 1, it is characterised in that specific step
It is rapid as follows:
Step 1, high-low temperature tester set temperature: high-low temperature tester is set according to optical fibre displacement sensor measurement temperature
Temperature guarantees that repeatedly measurement temperature is consistent；
Step 2, the calibration optical fibre displacement sensor are at a distance from standard component: measuring the optical fibre displacement sensor and the mark
Distance between quasi- part upper surface, repeatedly measurement is averaged；The standard component is rectangular plate-like structure；
Step 3, the measurement optical fibre displacement sensor are at a distance from test specimen: according to measurement standard, measuring the fiber optics displacement and pass
Sensor is at a distance from test specimen；Measure test specimen during, according to optical fibre displacement sensor described in same time interval measurement with it is described
The distance of standard component, determines the extension deforming high precision measuring device stability, and with the optical fibre displacement sensor and mark
Distance is compared between quasi- part；
Step 4, the measurement optical fibre displacement sensor are at a distance from test specimen after bead: according to measurement standard, described in measurement
Optical fibre displacement sensor is at a distance from test specimen after bead, according to light described in same time interval measurement during measurement test specimen
Fine displacement sensor and the standard component distance are determined from the extension deformation measuring system stability；
Step 5, calculation testing piece extension deflection: with the optical fibre displacement sensor and test specimen initial distance and the fiber optics displacement
Sensor and standard component apart from its difference, subtract correspond to after the optical fibre displacement sensor and bead it is at a distance from test specimen and described
Optical fibre displacement sensor and standard component are apart from its difference to get test specimen extension deflection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811320334.1A CN109556519A (en) | 2018-11-07 | 2018-11-07 | A kind of extension deforming high precision measuring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811320334.1A CN109556519A (en) | 2018-11-07 | 2018-11-07 | A kind of extension deforming high precision measuring device and method |
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| Publication Number | Publication Date |
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| CN109556519A true CN109556519A (en) | 2019-04-02 |
Family
ID=65865940
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| CN201811320334.1A Pending CN109556519A (en) | 2018-11-07 | 2018-11-07 | A kind of extension deforming high precision measuring device and method |
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