CN107228738B - A kind of tension and compression experiment device in situ for the calibration of X-ray stress test - Google Patents
A kind of tension and compression experiment device in situ for the calibration of X-ray stress test Download PDFInfo
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- CN107228738B CN107228738B CN201710580719.0A CN201710580719A CN107228738B CN 107228738 B CN107228738 B CN 107228738B CN 201710580719 A CN201710580719 A CN 201710580719A CN 107228738 B CN107228738 B CN 107228738B
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- load
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- screw rod
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- driving member
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- 238000007906 compression Methods 0.000 title claims abstract description 19
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims abstract description 71
- 239000007787 solid Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
Abstract
A kind of tension and compression experiment device in situ of X-ray stress test calibration, including sample clamping device, load test mechanism, displacement drive mechanism, sliding rail base plate mechanism, the left fixture of clamping device is fixed on bottom plate, and right fixture is mounted on the sliding block of sliding rail base plate mechanism；Sliding rail base plate mechanism is fixed between the left fixture of bottom plate and support frame；The support frame of displacement drive mechanism is mounted on bottom plate, displacement driving member is mounted on another sliding block of slide block guide rail, in round recessed of the displacement load threaded rod left end loaded on displacement driving member, the support of displacement load threaded rod right end is on the support frame, load test mechanism is load transducer, and the centre symmetry line and the centre symmetry line of displacement load threaded rod and the centre symmetry line of test sample of load transducer are coaxial.Beneficial effect is: load transmission concentricity is good, and sample obtains stress value accurately and is uniaxial stressed state；Apparatus structure is succinct, easily manufactured, and size is small, and regulation is convenient manually, and numerical reliability is high, and load range is big.
Description
Technical field
The invention belongs to the drawings in situ that tension and compression experiment device technical field in situ more particularly to X-ray stress test are demarcated
Compression testing device.
Background technique
X-ray diffraction method (XRD) have many advantages such as it is lossless, quick, accurate, can be selective, quantitative, office
The residual stress of the measurement material in portion, is applicable not only to the sample of deformation, can also directly measure machine components.Therefore, the party
Method has been widely used in the detection of machine performance (residual stress) of crystalline material.But remaining to certain certain materials
In the test of stress, such as titanium alloy, austenitic stainless steel, aluminium alloy, often there is the diffraction maximum in polycrystalline face, some diffraction maximums
It is then mutually superimposed.Conventionally, for the diffraction maximum of any one crystal face, as long as substituting into the Stress Constants K of corresponding crystal face
Stress result can be obtained.And in fact, at us a large amount of it was found that, being calculated based on by certain crystallographic plane diffraction peaks
Stress is often irregular to follow, and cannot reflect true stress variation completely.Therefore, to certain special material residual stress tests
Before, progress X-ray diffraction method residual stress test accuracy assess most important.
Due to the limitation and requirement of experiment of the X-ray diffractometer test space, there is following requirement: 1. body to experimental rig
Product is small；2. load loading range is big；3. can be stretched to sample, compression-loaded；4. pinpoint accuracy.In the prior art, X is penetrated
It is single compression set or single stretching device that line diffraction approach residual stress test accuracy, which assesses device, and deficiency exists
In: it can only realize single function, and load range very little, construct more complex.
Summary of the invention
The object of the present invention is to provide a kind of tension and compression experiment devices in situ of X-ray stress test calibration.
The technical scheme is that a kind of tension and compression experiment device in situ of X-ray stress test calibration, including specimen holder
Mechanism, load test mechanism, displacement loading mechanism, sliding rail and base plate mechanism are held, sliding rail and base plate mechanism include bottom plate and sliding block
Guide rail mechanism, slide block guide rail mechanism include a guide rail and two pieces of sliding blocks on guide rail, and guide rail is fixed on bottom plate, special
Sign is: the clamping device includes left fixture and right fixture, and left fixture and right fixture are square blocks, and square block top surface, which is equipped with, to be surveyed
Test agent fixing screws, the left end of bottom plate is fixedly mounted below the left fixture, and right fixture is mounted on slide block guide rail mechanism
On one piece of sliding block, the both ends of test sample are separately fixed on left fixture and right fixture with test sample fixing screws；Institute's rheme
Moving loading mechanism includes displacement driving member, displacement load screw rod, baffle, support frame and box socket set, the displacement transmission
Part is square block, and a round recessed is provided on the right side of square block, and round recessed is located at square block right side middle and upper part, the baffle
It is the plate covered on displacement driving member right side round recessed, the circular hole matched with displacement load threaded rod is provided on baffle,
Baffle is fixedly connected with displacement driving member, and the displacement load screw rod is round end screw rod, and left end is round end, and the end face of round end is ball
Face, right end are hexagonal prisms, and hexagonal prisms are the hexagonal prisms matched with box socket set, and support frame as described above is square block bracket,
Bracket middle and upper part is provided with the circular hole matched with displacement load threaded rod, and the right end of bottom plate is fixedly mounted below support frame；Institute
The slide block guide rail mechanism for stating sliding rail and base plate mechanism is accurate sliding block linear guide, and the guide rail of accurate sliding block linear guide is fixed on
Position on bottom plate is between left fixture and support frame, and the displacement driving member is mounted on the another of accurate sliding block linear guide
On sliding block, in the round recessed of the displacement load screw rod left end round end loaded on displacement driving member right side, the circular arc of round end end face
Face top and one point contact of round recessed baseplane, displacement load screw rod right end pass through the circular hole that baffle is supported on support frame middle and upper part
On, the centre symmetry line of the centre symmetry line and test sample of displacement load screw rod is coaxial；The load test mechanism is load
Sensor, load transducer left end are fixedly mounted on right fixture, and right end is fixedly mounted on displacement driving member, load transducer
Centre symmetry line and displacement load screw rod centre symmetry line and test sample centre symmetry line it is coaxial.
A kind of tension and compression experiment device in situ of X-ray stress test calibration of the present invention, it is characterised in that: the displacement
External digital display loaded load table on loading mechanism, the accuracy of digital display loaded load table are 0.2%FS.
A kind of tension and compression experiment device in situ of X-ray stress test calibration of the present invention, it is characterised in that: the load
Sensor accuracy is 0.05%FS.
The tension and compression experiment device in situ of X-ray stress test calibration of the invention, based on sliding block sliding rail, by right fixture
It is fixed on sliding block with displacement driving member, load threaded rod is rotated by box socket set to control the shifting of sliding block on the slide rail
It is dynamic, test sample is loaded, loaded load is shown by external digital display meter, realizes stretching, the compression-loaded of sample, and to load
Precise measurement.
The material of each part of the present invention selects: since contact position rubbing action each in loading procedure is strong, displacement adds
The material for carrying threaded rod and baffle wants hardness height, wearability good, selects 40Cr material, and carry out Nitrizing Treatment；In order to prevent zero
Part get rusty cause tension and compression experiment machine load have some setbacks, error the problems such as remaining parts select stainless steel 304；Fastening screw is selected
12.9 grade high-strength screw.
The beneficial effects of the present invention are:
1, test sample, sensor and displacement load screw coaxial, guarantee the accuracy of load test；
2, displacement load screw rod left side is spherical surface, and the displacement driving member right groove contacted is then plane, the two
For a face contact, frictional force is small, load it is more labor-saving, while also for test sample, load transducer, displacement load screw rod it is precisely same
Axis provides guaranteed conditions；
3, displacement load screw rod right end is designed to the hexagonal prisms structure of cooperation box socket set, is loaded with ratchet spanner,
The Dead Core Problems in displacement load screw rod rotation process can be effectively avoided, are loaded more labor-saving；
4, baffle is main stress point in tensile loads, and baffle is fixed on displacement driving member, keeps tensile loads more steady
It is fixed；
5, the application of accurate sliding block linear guide, it is convenient to make load, and friction is small between sliding block sliding rail, improves entire
The load accuracy of device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the tension and compression experiment device in situ of X-ray stress test calibration of the present invention.
In figure: 1, sample clamping device, 11, left fixture, 12, right fixture；13, test sample, 2, load test mechanism,
21, sensor；3, displacement loading mechanism, 31, displacement driving member, 32, baffle, 33, displacement load screw rod, 34, support frame；4, sliding
Rail and base plate mechanism, 41, accurate sliding block linear guide, 42, bottom plate.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
A kind of tension and compression experiment device in situ of X-ray stress test calibration, including sample clamping device 1, load test machine
Structure 2, displacement loading mechanism 3, sliding rail and base plate mechanism 4, sliding rail and base plate mechanism 4 include bottom plate 42 and slide block guide rail mechanism, are slided
Block guide rail mechanism includes a guide rail and two pieces of sliding blocks on guide rail, and guide rail is fixed on bottom plate, and clamping device 1 includes a left side
Fixture 11 and right fixture 12, left fixture 11 and right fixture 12 are square blocks, and square block top surface is equipped with 13 fixing screws of test sample,
Left fixture 11 is fixedly mounted on the left end of bottom plate 42 below, and right fixture 12 is mounted on one piece of sliding block of slide block guide rail mechanism, surveys
The both ends of test agent 13 are separately fixed on left fixture 11 and right fixture 12 with test sample fixing screws；Displacement loading mechanism 3
It is including displacement driving member 31, displacement load screw rod 33, baffle 32, support frame 34 and box socket set, displacement driving member 31
Square block is provided with a round recessed on the right side of square block, and round recessed is located at square block right side middle and upper part, and baffle 32 is to cover
It is provided on the plate being displaced on 31 right side round recessed of driving member, baffle 32 and displacement loads the circular hole that screw rod 33 matches, gear
Plate 32 is fixedly connected with displacement driving member 31, and displacement load screw rod 33 is round end screw rod, and left end is round end, and the end face of round end is ball
Face, right end are hexagonal prisms, and hexagonal prisms are the hexagonal prisms matched with box socket set, and support frame 34 is square block bracket, branch
Frame middle and upper part is provided with the circular hole matched with displacement load screw rod 33, and support frame 34 is fixedly mounted on the right end of bottom plate 42 below；
On another sliding block for the slide block guide rail mechanism that displacement driving member 31 is mounted on sliding rail base plate mechanism 4, displacement load 33 left end of screw rod
In round recessed of the round end loaded on displacement 31 right side of driving member, arc surface top and the round recessed baseplane of round end end face are a little connect
Touching, displacement load 33 right end of screw rod pass through baffle 32 and are supported on the circular hole of 34 middle and upper part of support frame, displacement load screw rod 33
The centre symmetry line of centre symmetry line and test sample 13 is coaxial；The slide block guide rail mechanism of sliding rail base plate mechanism 4 is accurate sliding block
Linear guide 41, the position that the guide rail of accurate sliding block linear guide 41 is fixed on bottom plate 42 are in left fixture 11 and support frame 34
Between, load test mechanism 2 is load transducer 21, and 21 left end of load transducer is fixedly mounted on right fixture 12, and right end is solid
Dingan County on displacement driving member 31, the centre symmetry line of the centre symmetry line of load transducer 21 and displacement load screw rod 33 and
The centre symmetry line of test sample 13 is coaxial.The accuracy of digital display loaded load table is 0.2%FS, and load range is ± 10KN.
21 accuracy of load transducer is 0.05%FS.
Application method is:
1, before use, being lubricated with lubricating oil displacement load screw rod 33 and accurate sliding block linear guide 41；Then, it will test
Sample 13 is fixed on the fixture of sample clamping device.After completing above-mentioned steps, experimental provision is put into inside X-ray diffractometer
It is fixed；
2, test sample 13 is loaded using ratchet spanner rotation displacement load screw rod, is read by digital display loaded load table
Loaded load；Meanwhile stress test is carried out to load test sample with X-ray diffractometer, after the completion of test, to test result with
Loaded load is compared, and completes the assessment to X-ray diffractometer stress test accuracy.
Claims (3)
1. a kind of tension and compression experiment device in situ of X-ray stress test calibration, including sample clamping device (1), load test machine
Structure (2), displacement loading mechanism (3), sliding rail and base plate mechanism (4), sliding rail and base plate mechanism (4) include slide block guide rail mechanism and bottom
Plate (42), slide block guide rail mechanism include a guide rail and two pieces of sliding blocks on guide rail, and guide rail is fixed on bottom plate, feature
Be: the clamping device (1) includes left fixture (11) and right fixture (12), and left fixture (11) and right fixture (12) are rectangular
Block, square block top surface are equipped with test sample (13) fixing screws, and the left fixture (11) is fixedly mounted on bottom plate (42) below
Left end, right fixture (12) are mounted on one piece of sliding block of slide block guide rail mechanism, and the both ends of test sample (13) are solid with test sample
Determine screw to be separately fixed on left fixture (11) and right fixture (12)；The displacement loading mechanism (3) includes displacement driving member
(31), displacement load screw rod (33), baffle (32), support frame (34) and box socket set, the displacement driving member (31) are
Square block is provided with a round recessed on the right side of square block, and round recessed is located at square block right side middle and upper part, the baffle (32)
It is the plate covered on displacement driving member (31) right side round recessed, is provided on baffle (32) and matches with displacement load screw rod (33)
The circular hole of conjunction, baffle (32) are fixedly connected with displacement driving member (31), and displacement load screw rod (33) is round end screw rod, left end
It is round end, the end face of round end is spherical surface, and right end is hexagonal prisms, and hexagonal prisms are the hexagonal prisms matched with box socket set, institute
Stating support frame (34) is square block bracket, and bracket middle and upper part is provided with the circular hole matched with displacement load screw rod (33), support frame
(34) it is fixedly mounted on the right end of bottom plate (42) below；The slide block guide rail mechanism of the sliding rail and base plate mechanism (4) is accurate cunning
Block linear guide (41), the position that the guide rail of accurate sliding block linear guide (41) is fixed on bottom plate (42) are in left fixture (11)
Between support frame (34), displacement driving member (31) is mounted on another sliding block of accurate sliding block linear guide (41), institute
Rheme is moved in round recessed of load screw rod (33) the left end round end loaded on displacement driving member (31) right side, the arc surface of round end end face
Top and one point contact of round recessed baseplane, displacement load screw rod (33) right end pass through baffle (32) and are supported in support frame (34)
On the circular hole on top, the centre symmetry line of the centre symmetry line and test sample (13) of displacement load screw rod (33) is coaxial；It is described
Load test mechanism (2) is load transducer (21), and load transducer (21) left end is fixedly mounted on right fixture (12), right end
It is fixedly mounted in displacement driving member (31), the centre symmetry line of load transducer (21) and the center of displacement load screw rod (33)
The centre symmetry line of line of symmetry and test sample (13) is coaxial.
2. a kind of tension and compression experiment device in situ of X-ray stress test calibration as described in claim 1, it is characterised in that: described
External digital display loaded load table on displacement loading mechanism (3), the accuracy of digital display loaded load table are 0.2%FS.
3. a kind of tension and compression experiment device in situ of X-ray stress test calibration as claimed in claim 2, it is characterised in that: described
The accuracy of load transducer (21) is 0.05%FS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580719.0A CN107228738B (en) | 2017-07-17 | 2017-07-17 | A kind of tension and compression experiment device in situ for the calibration of X-ray stress test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580719.0A CN107228738B (en) | 2017-07-17 | 2017-07-17 | A kind of tension and compression experiment device in situ for the calibration of X-ray stress test |
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| Publication Number | Publication Date |
|---|---|
| CN107228738A CN107228738A (en) | 2017-10-03 |
| CN107228738B true CN107228738B (en) | 2019-09-17 |
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| CN201710580719.0A Active CN107228738B (en) | 2017-07-17 | 2017-07-17 | A kind of tension and compression experiment device in situ for the calibration of X-ray stress test |
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| CN108072591B (en) * | 2017-12-04 | 2020-01-17 | 厦门理工学院 | Sample support for polymer melt online stretching and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353431A (en) * | 2013-07-12 | 2013-10-16 | 吉林大学 | In-situ indentation mechanical testing device based on tensile compression and fatigue combined load mode |
| CN103499489A (en) * | 2013-06-19 | 2014-01-08 | 吉林大学 | Cross-span multi-view in-situ dynamic mechanics capture testing platform |
| CN203643255U (en) * | 2013-10-24 | 2014-06-11 | 吉林大学 | In-situ pull/press-torsion combined load material micromechanics test platform |
| CN105223079A (en) * | 2015-11-12 | 2016-01-06 | 中国科学院金属研究所 | Material structure performance in-situ test device under motor and hydraulic pressure composite flooding mode |
| CN205941199U (en) * | 2016-06-24 | 2017-02-08 | 天津大学 | Three -dimensional defect reconsitution normal position test device |
-
2017
- 2017-07-17 CN CN201710580719.0A patent/CN107228738B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499489A (en) * | 2013-06-19 | 2014-01-08 | 吉林大学 | Cross-span multi-view in-situ dynamic mechanics capture testing platform |
| CN103353431A (en) * | 2013-07-12 | 2013-10-16 | 吉林大学 | In-situ indentation mechanical testing device based on tensile compression and fatigue combined load mode |
| CN203643255U (en) * | 2013-10-24 | 2014-06-11 | 吉林大学 | In-situ pull/press-torsion combined load material micromechanics test platform |
| CN105223079A (en) * | 2015-11-12 | 2016-01-06 | 中国科学院金属研究所 | Material structure performance in-situ test device under motor and hydraulic pressure composite flooding mode |
| CN205941199U (en) * | 2016-06-24 | 2017-02-08 | 天津大学 | Three -dimensional defect reconsitution normal position test device |
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| CN107228738A (en) | 2017-10-03 |
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