CN209356430U - A kind of high-precision probe clamping device for Sample location in neutron diffraction measurement - Google Patents
A kind of high-precision probe clamping device for Sample location in neutron diffraction measurement Download PDFInfo
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- CN209356430U CN209356430U CN201920012173.3U CN201920012173U CN209356430U CN 209356430 U CN209356430 U CN 209356430U CN 201920012173 U CN201920012173 U CN 201920012173U CN 209356430 U CN209356430 U CN 209356430U
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- probe
- locating piece
- pedestal
- clamping device
- sample
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- 239000000523 sample Substances 0.000 title claims abstract description 151
- 238000005259 measurement Methods 0.000 title claims abstract description 30
- 238000001683 neutron diffraction Methods 0.000 title claims abstract description 26
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Abstract
The utility model provides a kind of high-precision probe clamping device for Sample location in neutron diffraction measurement, including top plate and pedestal setting up and down, the multiple support connecting columns being vertically arranged between top plate and pedestal, and it is separately positioned on the upper locating piece and lower locating piece of top plate and base center position, coaxial and isodiametric through-hole is set on two locating pieces with the upper and lower ends for accommodating probe, the threaded hole for matching with fastening screw and being connected to locating piece inner via hole is equipped on each locating piece, the threaded hole is horizontally disposed and is located at the same side of probe, clamping to probe both ends is realized by the spinning in and out of fastening screw and is loosened, being straightened for probe is realized and then the distance between threadingly direction rotational positioning part two locating pieces of adjustment.For the utility model guaranteeing probe installation accuracy and under the premise of verticality, realize the quick-replaceable to probe and be straightened and tighten operation, the needle installation accuracy height of spy is conducive to the accurate positioning of sample.
Description
Technical field
The utility model relates to neutron diffraction residual stress detection technique fields, and in particular to a kind of probe clamping device,
The probe clamping device is applied to Sample location when measuring using neutron diffraction to material and component residual stress.
Background technique
The fast development of country be unable to do without the support of engineering field.Nowadays, about large-scale component in all kinds of engineering projects
Use become more and more extensive and frequent, and once occur due to large-scale component damage caused by safety accident, in people
It all will be huge for losing caused by terms of power and material resources.
Show that residual stress is to cause an important factor for partly or wholly property of material and component is destroyed according to correlative study
One of.Currently, the method for energy detection means internal residual stress size is broadly divided into and damages method of testing and non-destructive testing method,
In, neutron diffraction method is the representative method in non-destructive testing method, and so far about the maximally efficient of residual stress detection
Lossless detection method.Neutron diffractometer is the device that residual stress measurement is carried out using neutron diffraction principle, international at present
On the localization method that uses mostly use neutron beam to sweep side positioning mode greatly: for rule sample known to appearance profile size,
Neutron beam sweeps the calibration that sample is accurately mounted on line home position of going forward side by side on sample stage by side positioning mode first, and when measurement adjusts again
Sample controls the movement of sample, measures sample since surface-boundary profile, obtain in diffraction to suitable angle and position
Beamlet intensity, move step by step make sample volume enter sample interior, record each neutron beam diffraction outgoing intensity, until sampling body
Product is gradually removed from outer boundary, can be generated in one from " move into-exit " measurement process between two boundaries of thickness of sample
Beamlet peak intensity distribution profile, referred to as " arrival curve ".The jump position interval on the curve both sides is thickness of sample, height of curve
Position corresponding to half is the position that sample boundaries are moved to point diffraction.Further according to the profile geometry letter of previously known sample
Breath and installation site calculate the position and posture for determining sample geometric center in measurement space.
It is this to sweep side localization method requirement sample with rule and known contours profiles or there is specific surface
Shape, while wanting Multiple-Scan surface just and can obtain correct " arrival curve ", the positioning time needed is long, precision is low.
However during actual measurement, the shape of sample is indefinite and changes multiplicity, and when there are texture, big crystalline substance in the surface of scanning
When the case where grain or high-selenium corn material, incidence curves also occur that deformation, can not realize accurate positioning.
To overcome the above disadvantages, special to propose the sample positioning method based on standard probe, core is exactly to pass through carefully
Long probe first finds diffractometry origin (using the center of probe correction sample volume) and is surveyed based on this
Amount calibration finally completes sample then by determining that the relative positional relationship of each coordinate system realizes the positioning to measurement point in sample
The measurement of residual stress in product.
Diffractometry original is demarcated due under different experimental situations, needing to use the probe of different-diameter and material
Point, and probe used at present is all made of integrated clamping method identical with sample clamp, and position after once mounting during installation
Setting cannot be adjusted, there is a problem of in the actual operation process probe replace it is cumbersome, in addition due to probe have very big major diameter
It fixes and the hanging set-up mode of the other end, easily deforms and breakage phenomenon than and using one end.If needed in an experiment
Frequently replacement probe or probe, which fracture, will all seriously affect experiment progress, considerably increase the time of experiment, lead to treasured
The expensive neutron beam time is by serious waste, to cause huge economic loss.Meanwhile in the above-mentioned Sample location based on probe
In method, it is necessary to which the moment guarantees the installation accuracy and verticality of probe, this just proposes the clamping of probe and replacement process
Very high request.
It regarding to the issue above and requires, is badly in need of in industry a kind of new clamping with the matching used probe of Neutron diffractometer
Device.
Utility model content
Convenient spy flexible, probe replacement is convenient, installation accuracy is high is dismounted the purpose of this utility model is to provide a kind of
Needle clamping device, to solve the problems, such as to propose in background technique.
To achieve the above object, the utility model provides a kind of high-precision for Sample location in neutron diffraction measurement
Probe clamping device, including top plate, pedestal, upper locating piece, lower locating piece, upper fastening screw and lower fastening screw；
The top plate and pedestal are setting up and down and multiple vertical support connecting columns are equipped between the two, and the pedestal is direct
Or be indirectly fixed on the sample stage of Neutron diffractometer, the upper locating piece and lower locating piece be separately positioned on the top plate and
On pedestal and the distance of two locating pieces in the vertical direction is adjustable, in the corresponding position of the upper locating piece and lower locating piece point
Not She You coaxial and isodiametric through-hole with the upper and lower ends for accommodating probe, further respectively had on two locating pieces and institute
Fastening screw and the lower matched threaded hole of fastening screw are stated, the threaded hole is horizontally disposed with and the through-hole in one end and locating piece
With the contact for realizing fastening screw and through-hole internal probe, two fastening screws are parallel up and down and are located at the probe for connection
Same side direction is realized clamping to probe both ends by the spinning in and out of fastening screw and is loosened, and positions by adjusting two
Distance between part realizes the flattening operations to probe.
Cooperation between the probe and upper and lower locating piece through-hole uses the basic shaft system clearance fit form of 6 class precisions, to protect
Demonstrate,prove the concentricity of probe and the verticality relative to chassis.
Preferably, the upper locating piece and lower locating piece pass through screw thread and are respectively fixedly connected in the top plate and pedestal
On, and matched gasket and adjusting nut are set in the part that is pierced by of the threaded one end of locating piece.
Preferably, it uses and is removably connected between the both ends and the top plate and pedestal of the support connecting column；Or it is described
Connecting column and the top plate and pedestal is supported to be integrally formed.
Preferably, the support connecting column is distributed in evenly and at intervals using the axial line of through-hole on locating piece as the circle in the center of circle
Zhou Shang.It is highly preferred that the quantity of the support connecting column is four, make to clamp probe as far as possible while guaranteeing supporting role
Visible angle range (visual range refers to from probe sampling volume location toward in terms of entrance port or detector, it can be seen that two-phase
The range of neighbour's connection intercolumniation) it maximizes.
Preferably, the through-hole on two locating pieces is the top plate, pedestal, upper locating piece, lower locating piece and connecting column dress
With integral latter secondary machine-shaping, to ensure the concentricity between upper and lower two through-holes, and then guarantee clamped probe relative to
To the positioning accuracy of sample when the verticality of pedestal and neutron diffraction measure.
Preferably, it is additionally provided with multiple bolt connecting holes being connected between sample stage for realizing it on the base；Or
Connecting base plate is set in the lower section of the pedestal and is consolidated between sample stage equipped with multiple for realizing it on the connecting base plate
Bolt connecting hole even.
Preferably, when the probe clamping device further includes connecting base plate, sky is equipped in the bottom of the connecting base plate
Chamber, the cavity be used to accommodate lower locating piece one end and lower fastening screw, or one end and adjustment for accommodating lower locating piece
Nut.
Preferably, between the pedestal and connecting base plate by attachment screw be connected, or both be integrally formed.
In order to guarantee the reliability, wearability, bending resistance and anticorrosive property of device itself, each component of the utility model
Material selection stainless steel or in terms of intensity, wearability, inoxidizability and corrosion resistance with good behaviour high-performance aluminum
Alloy.In order to realize effectively clamping and be straightened for probe, while ensuring the verticality and installation accuracy of probe, the locating piece with
Being threadedly engaged between top plate and pedestal is fine thread cooperation, it can be made to have good fine tuning effect and more suitable for bearing
Biggish pulling force and impact force.
Technical solution provided by the utility model at least has the following beneficial effects:
1, the utility model has good practicability, and structure is simple, convenient for disassembly and assembly, using flexible and is easy to carry about with one, can
It solves the problems, such as brought by current one-piece type probe clamping device, in the case where guaranteeing the requirement of installation accuracy and verticality of probe,
It realizes installation fixation, clamping and the flattening operations in neutron diffraction measurement to probe, is conducive to the accurate positioning of sample, energy
The time spent by the Sample location experimental program based on standard probe is greatly decreased, saves the valuable neutron beam time, it can be into
One step improves the efficiency of its positioning measurement.
2, the locating piece for being used to clamp probe is arranged to threaded form by the utility model, is not only convenient for according to difference
Positioning experiment needs to replace with lower locating piece at any time, suitable for the probe of different diameter specifications, also by changing directly as bent side
Formula realizes fine tuning to probe, due to using screw type roll adjustment method, it is ensured that probe in moving process always without departing from
Central axis, it is ensured that positioning accuracy when measurement experiment.
3, the utility model is by being set in parallel to each other upper and lower two fastening screws in the same side of probe, so that visiting
The upper and lower ends of needle are simultaneously by from unidirectional active force, it is ensured that and probe remains the verticality relative to pedestal,
Improve the positioning accuracy of sample；Meanwhile when carrying out operation to the through-hole on upper and lower two locating pieces, using by the main portion of device
The mode that part is processed and formed at one time after the assembly is completed, it is ensured that the alignment of two through-holes is also beneficial to ensure the verticality of probe
And then improve the positioning accuracy of sample.
4, axisymmetric four supports connecting column is arranged in the utility model, is not only convenient for determining the position of central axis, also
Enough spaces can be reserved to neutron beam when neutron diffraction is measured, be conducive to the centre bit for determining sampling body in experiment measurement
Appearance achievees the effect that the visible angle range for expanding clamped probe, avoids incident neutron beam or diffracted neutrons beam and Probe clip
Device is held to interfere.
Detailed description of the invention
It, below will be to required in the utility model embodiment description in order to illustrate more clearly of technical solutions of the utility model
Using to attached drawing be briefly described, it should be apparent that, following drawings is used only for helping to understand portion in the utility model
Divide embodiment rather than the whole of technical solution, in which:
Fig. 1 is the stereoscopic schematic diagram of the utility model embodiment 1；
Fig. 2 is the axial sectional view of Fig. 1；
Fig. 3 is the stereoscopic schematic diagram of the utility model embodiment 2；
Fig. 4 is the axial sectional view of Fig. 3；
Fig. 5 is the stereoscopic schematic diagram of the utility model embodiment 3；
Fig. 6 is the axial sectional view of Fig. 5；
Fig. 7 is operation schematic diagram of the utility model probe clamping device in Sample location experiment；
Wherein: 01 probe, 02 sample stage, 03 entrance slit, 04 neutron detector, 05 incident neutron beam, 06 diffracted neutrons
Beam, 021 load supporting plate, 022 X-axis driving servo motor, 023 Y-axis driving servo motor, 024 Z axis first order lift cylinders,
025 Z axis second level lift cylinders, 026 Z axis rotating mechanism；1 top plate, 2 pedestals, locating piece on 3,4 lower locating pieces fasten spiral shell on 5
Nail, 6 lower fastening screws, 7 support connecting columns, 8 adjusting nuts, 9 connecting base plates, 10 attachment screws.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, the technical solution of the utility model is carried out it is clear, complete
Site preparation description, it is clear that described embodiment is only the section Example of the utility model, instead of all the embodiments.Base
In the embodiments of the present invention, institute obtained by those of ordinary skill in the art without making creative efforts
There are other embodiments, fall within the protection scope of the utility model.
Embodiment 1
Referring to Fig. 1 and Fig. 2, a kind of high-precision probe clamping device for Sample location in neutron diffraction measurement, including
Top plate 1, pedestal 2, upper locating piece 3, lower locating piece 4, upper fastening screw 5, lower fastening screw 6 and connecting base plate 9.
The pedestal 2 is arranged between the center and the two of the connecting base plate 9 through interference fit and attachment screw
10 are connected, and multiple bolt connecting holes being connected between sample stage 02 for realizing it, the top are equipped on the connecting base plate 9
Plate 1, which is arranged between the surface and the two of the pedestal 2, is equipped with vertical support connecting column 7, the upper locating piece 3 and lower positioning
Part 4 is separately positioned on the top plate 1 and pedestal 2 and the distance of two locating pieces in the vertical direction is adjustable, described fixed
The center of position part 3 and lower locating piece 4 is respectively equipped with coaxial and isodiametric through-hole with up and down two for accommodating probe 01
End, and further respectively have on two locating pieces with the upper fastening screw 5 and the matched threaded hole of lower fastening screw 6, it is described
Threaded hole is horizontally disposed and one end is connected to the through-hole in locating piece with the contact for realizing fastening screw and through-hole internal probe,
Two fastening screws are parallel up and down and are located at the same side direction of the probe；It is realized by the spinning in and out of fastening screw to probe
The clamping at both ends and loosen, and realizes the flattening operations to probe by adjusting the distance between two locating pieces.
In the present embodiment, the quantity of the support connecting column 7 is four and is distributed on locating piece evenly and at intervals
The axial line of through-hole is multiple support connecting columns one axisymmetric hollow structure of formation on the circumference in the center of circle, in the structure
Mandrel line is overlapped with the central axis of through-hole on two locating pieces, the through-hole on two locating pieces be the top plate 1, pedestal 2, on
Locating piece 3, lower locating piece 4 and connecting column 7 assemble integral latter secondary machine-shaping, coaxial between upper and lower two through-holes to ensure
Degree, and then guarantee positioning accuracy when clamped probe is measured relative to the verticality of pedestal 2 and neutron diffraction to sample.Institute
It states between support connecting column 7 and the top plate 1 and pedestal 2 using formation one is hollow between integrated molding mode and three and surrounding is engraved
Empty cylinder.
In the present embodiment, the upper locating piece 3 and lower locating piece 4 are respectively fixedly connected with by screw thread in the top plate
1 and pedestal 2 on, and two threaded one end of locating piece are oppositely arranged and fastening screw are arranged in non-threaded one end, in institute
The part that is pierced by for stating the threaded one end of locating piece 3 is provided with matched gasket and adjusting nut 8, and the lower locating piece 4 is also worn
The connecting base plate 9 is crossed, is equipped with non-threaded end and lower fastening for locating piece 4 under accommodating in the bottom of the connecting base plate 9
The cavity of screw 6.
Embodiment 2
Referring to Fig. 3 and Fig. 4, a kind of high-precision probe clamping device for Sample location in neutron diffraction measurement, in addition to
Cancel attachment screw 10 between the pedestal 2 and connecting base plate 9 and use outside integrated molding mode, other structures and embodiment 1 are complete
It is exactly the same.
Embodiment 3
Referring to figs. 5 and 6, a kind of high-precision probe clamping device for Sample location in neutron diffraction measurement, knot
Structure is substantially the same manner as Example 1, and distinctive points are as follows: in the present embodiment, the support connecting column 7 and the top plate 1 and pedestal 2
Between using being removably connected, specifically, the both ends of the support connecting column 7 are designed to bolt pattern and by matched nut
Or threaded hole is connected with the top plate 1 and pedestal 2 respectively；The present embodiment does not include connecting base plate 9, therefore without attachment screw
10, the pedestal 2 is directly anchored on the sample stage 02 of Neutron diffractometer and is equipped with multiple bolt connecting holes on pedestal 2；
In the present embodiment, two threaded one end of locating piece are arranged downward, and being pierced by two threaded one end of locating piece
Part is provided with matched gasket and adjusting nut 8, is additionally provided in the bottom of the pedestal 2 for locating piece 4 under accommodating
The cavity of screw thread traversing through end and adjusting nut 8, in order to lower locating piece 4 provide it is enough move up and down space, the pedestal 2 is set
The structure of middle part protrusion is counted into, the lower locating piece 4 is arranged in the raised position of pedestal 2.
In conjunction with Fig. 7, the experiment condition of neutron diffraction measurement include the sample stage 02 of Neutron diffractometer, entrance slit 03,
Neutron detector 04, neutron beam baffle, shielding big drum and total station measuring system (being not entirely shown in figure).Measurement method is base
In the sample positioning method of probe.
The process of neutron diffraction measurement is as follows:
1, it assembles probe clamping device and probe midpoint is set as mark point, pass through hexagon socket head cap screw and bolt connecting hole
Cooperation entire probe clamping device is fixed on the load supporting plate 021 of sample stage 02, while pending residual stress being surveyed
The sample of amount is also secured on load supporting plate 021, and the relative position of any point and mark point is fixed value on sample at this time；
2, incident neutron beam 05 is issued by entrance slit 03, diffracted neutrons beam 06 is received by neutron detector 04；
3, drive servo motor 022, Y-axis that 023, two Z axis lift cylinders of servo motor and Z axis is driven to rotate by X-axis
The driving load supporting plate 021 of mechanism 26 is in X-axis, Y-axis, Z-direction are mobile or rotates about the z axis, is diffractometry reference using mark point
Point sweeps side method with neutron beam and determines sample volume center pose, is moved to the mark point on probe by 05 He of incident neutron beam
The plotted point position of diffracted neutrons beam 06, i.e. point diffraction；
4, coordinate system calibration is carried out to sample stage etc. using total station measuring system, remnants will be carried out by calculating on sample
The point (point i.e. to be measured) and the relative pose of probe midpoint (i.e. mark point) in sample stage coordinate system of stress measurement；
5, the movement of driving sample stage 02 and amount of exercise are calculated relative pose size, and point to be measured on sample is moved
Residual stress measurement is carried out to point diffraction；
6, it is analyzed by wavelength change of the neutron detector 04 to diffracted neutrons beam 06, is calculated by Prague principle
Out on sample point to be measured residual stress.
The above is only the preferred embodiment of the present invention, is not intended to limit the patent protection model of the utility model
It encloses, for those skilled in the art, the present invention may have various modifications and changes.In the spirit of the utility model
Within principle, any improvement made by using the description of the utility model and the drawings or equivalent replacement, directly or
It is used in other relevant technical fields indirectly, should all include in the scope of patent protection of the utility model.
Claims (8)
1. a kind of high-precision probe clamping device for Sample location in neutron diffraction measurement, which is characterized in that including top plate
(1), pedestal (2), upper locating piece (3), lower locating piece (4), upper fastening screw (5) and lower fastening screw (6)；
The top plate (1) and pedestal (2) it is setting up and down and between the two be equipped with multiple vertical support connecting columns (7), the bottom
Seat (2) is directly or indirectly fixed on the sample stage (02) of Neutron diffractometer, the upper locating piece (3) and lower locating piece (4)
It is separately positioned on the top plate (1) and pedestal (2) and the distance of two locating pieces in the vertical direction is adjustable, described fixed
The corresponding position of position part (3) and lower locating piece (4) is respectively equipped with coaxial and isodiametric through-hole for accommodating probe (01)
Upper and lower ends further respectively have and the upper fastening screw (5) and lower fastening screw (6) matched screw thread on two locating pieces
Hole, the threaded hole is horizontally disposed and one end is connected to for realizing fastening screw and through-hole internal probe with the through-hole in locating piece
Contact, two fastening screws are parallel up and down and are located at the same side direction of the probe, and the spinning in and out for passing through fastening screw are real
The now clamping to probe both ends and loosen, and realizes the flattening operations to probe by adjusting the distance between two locating pieces.
2. the high-precision probe clamping device for Sample location in neutron diffraction measurement according to claim 1, feature
It is, the upper locating piece (3) and lower locating piece (4) are respectively fixedly connected with by screw thread in the top plate (1) and pedestal (2)
On, and matched gasket and adjusting nut (8) are set in the part that is pierced by of the threaded one end of locating piece.
3. the high-precision probe clamping device for Sample location in neutron diffraction measurement according to claim 2, feature
It is, uses and be removably connected between the both ends and the top plate (1) and pedestal (2) of support connecting column (7)；Or the branch
It supports connecting column (7) and the top plate (1) and pedestal (2) is integrally formed.
4. the high-precision probe clamping device for Sample location in neutron diffraction measurement according to claim 3, feature
It is, the support connecting column (7) is distributed in evenly and at intervals using the axial line of through-hole on locating piece as on the circumference in the center of circle.
5. the high-precision probe clamping device for Sample location in neutron diffraction measurement according to claim 4, feature
It is, the through-hole on two locating pieces is the top plate (1), pedestal (2), upper locating piece (3), lower locating piece (4) and connecting column
(7) integral latter secondary machine-shaping is assembled, to ensure the concentricity between upper and lower two through-holes, and then guarantees clamped probe phase
To the positioning accuracy of sample when verticality and neutron diffraction for pedestal (2) measure.
6. the high-precision probe clamping device for Sample location in neutron diffraction measurement according to claim 5, feature
It is, multiple bolt connecting holes being connected between sample stage (02) for realizing it is additionally provided on the pedestal (2)；Or institute
It states lower section setting connecting base plate (9) of pedestal (2) and is equipped on the connecting base plate (9) multiple for realizing itself and sample stage
(02) bolt connecting hole being connected between.
7. the high-precision probe clamping device for Sample location in neutron diffraction measurement according to claim 6, feature
It is, when the probe clamping device further includes connecting base plate (9), is equipped with cavity, institute in the bottom of the connecting base plate (9)
Cavity is stated for accommodating one end and the lower fastening screw (6) of lower locating piece (4), or one end for accommodating lower locating piece (4) and
Adjusting nut (8).
8. the high-precision probe clamping device for Sample location in neutron diffraction measurement according to claim 7, feature
Be, between the pedestal (2) and connecting base plate (9) by attachment screw (10) be connected, or both be integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920012173.3U CN209356430U (en) | 2019-01-04 | 2019-01-04 | A kind of high-precision probe clamping device for Sample location in neutron diffraction measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920012173.3U CN209356430U (en) | 2019-01-04 | 2019-01-04 | A kind of high-precision probe clamping device for Sample location in neutron diffraction measurement |
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| Publication Number | Publication Date |
|---|---|
| CN209356430U true CN209356430U (en) | 2019-09-06 |
Family
ID=67802479
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|---|---|---|---|
| CN201920012173.3U Withdrawn - After Issue CN209356430U (en) | 2019-01-04 | 2019-01-04 | A kind of high-precision probe clamping device for Sample location in neutron diffraction measurement |
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| CN (1) | CN209356430U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540944A (en) * | 2019-01-04 | 2019-03-29 | 中南大学 | A kind of high-precision probe clamping device for Sample location in neutron diffraction measurement |
| WO2021109666A1 (en) * | 2019-12-03 | 2021-06-10 | 安方高科电磁安全技术(北京)有限公司 | Total station shielding system |
-
2019
- 2019-01-04 CN CN201920012173.3U patent/CN209356430U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540944A (en) * | 2019-01-04 | 2019-03-29 | 中南大学 | A kind of high-precision probe clamping device for Sample location in neutron diffraction measurement |
| CN109540944B (en) * | 2019-01-04 | 2023-10-31 | 中南大学 | High-precision probe clamping device for sample positioning in neutron diffraction measurement |
| WO2021109666A1 (en) * | 2019-12-03 | 2021-06-10 | 安方高科电磁安全技术(北京)有限公司 | Total station shielding system |
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