CN102507318A - Equi-biaxial residual stress applying device - Google Patents
Equi-biaxial residual stress applying device Download PDFInfo
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- CN102507318A CN102507318A CN2011103220781A CN201110322078A CN102507318A CN 102507318 A CN102507318 A CN 102507318A CN 2011103220781 A CN2011103220781 A CN 2011103220781A CN 201110322078 A CN201110322078 A CN 201110322078A CN 102507318 A CN102507318 A CN 102507318A
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- trim ring
- twin shaft
- anchor clamps
- bringing device
- unrelieved stress
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Abstract
The invention discloses an equi-biaxial residual stress applying device, which comprises an upper clamp (1) having a first press ring (12); and a lower clamp (2) in threaded connection with the upper clamp (1) and with a second press ring (23) coaxially arranged with respect to the first press ring (12), and the first press ring and the second press ring have different diameters. The inventive equi-biaxial residual stress applying device can simultaneously obtain tensile stress and compressive stress in different numerical value ranges, has simple operation and controllable numerical value, and provides necessary conditions for residual stress formula deduction. The device of the invention overcomes the defect that the compressive stress can be obtained only by cutting the sample, and realizes zero destruction. After the equi-biaxial residual stress applying device applies stress to a material, nano-indentation test is carried out and relationship between the indentation parameter and the residual stress can be established to obtain a residual stress calculation model.
Description
Technical field
The present invention relates to the proving installation technical field, particularly a kind of twin shaft unrelieved stress bringing device that waits.
Background technology
In recent years, the nano impress technology is suggested as original position and the local mechanical analysis technology of nanoscale, has been widely used in hardness, elastic modulus and the unrelieved stress etc. of measuring material at present.But nano impress method directly " pressure " goes out residual-stress value, and the relation that need seek out between indentation parameters and the unrelieved stress is finally derived formula of residual stress.During derivation formula, need a large amount of different residual-stress value.
Therefore how unstressed material is applied certain unrelieved stress, can optionally control the size of institute's stress application, and can apply compressive stress and tension simultaneously, become the important technological problems that people need solution badly.But existing unrelieved stress bringing device can only obtain compressive stress or tension individually, and the bringing device of compressive stress cannot control the size of institute's stress application, also must carry out cutting damage to sample and just can obtain compressive stress.
Therefore, how twin shaft unrelieved stress bringing device is provided etc.,, and can sample not be damaged, become the important technological problems that those skilled in the art need to be resolved hurrily so that the stress that is applied is controlled.
Summary of the invention
In view of this, the invention provides a kind of twin shaft unrelieved stress bringing device that waits,, and can not damage sample so that the stress that is applied is controlled.
For realizing above-mentioned purpose, the present invention provides following technical scheme:
A kind of twin shaft unrelieved stress bringing device that waits comprises:
Last anchor clamps, it has first trim ring;
With the lower clamp that said upward anchor clamps are threaded, it has second trim ring, said first trim ring and the said second trim ring coaxial arrangement, and diameter is different.
Preferably, wait in the twin shaft unrelieved stress bringing device above-mentioned, the diameter of said first trim ring is greater than the diameter of said second trim ring.
Preferably, wait in the twin shaft unrelieved stress bringing device above-mentioned, said upward anchor clamps are circular configuration, and said first trim ring is arranged at said center of going up anchor clamps;
Said lower clamp is a circular configuration, and said second trim ring is arranged at the center of said lower clamp.
Preferably; Wait in the twin shaft unrelieved stress bringing device above-mentioned; The said anchor clamps of going up have the first outer shroud auxiliary section; The outer ring of the said first outer shroud auxiliary section is provided with external thread, and said lower clamp has the second outer shroud auxiliary section, and the inner ring of the said second outer shroud auxiliary section is provided with the internal thread that cooperates with said external thread.
Preferably, wait in the twin shaft unrelieved stress bringing device above-mentioned, said first outer shroud auxiliary section and said first trim ring extend to same direction, and the height of said first trim ring is lower than the height of the said first outer shroud auxiliary section;
Said second outer shroud auxiliary section and said second trim ring extend to same direction.
Preferably, wait in the twin shaft unrelieved stress bringing device above-mentioned, the said anchor clamps of going up are provided with first elongated hole, and said first elongated hole is positioned at the inboard of said first trim ring;
Said lower clamp is provided with second elongated hole, and said second elongated hole is positioned at the inboard of said second trim ring.
Preferably, wait in the twin shaft unrelieved stress bringing device above-mentioned, also comprise first handle, it has operating handle and is arranged at least two bearing pins on the said operating handle, and the said anchor clamps of going up are provided with the pilot hole that cooperates with said bearing pin.
Preferably, wait in the twin shaft unrelieved stress bringing device above-mentioned, also comprise second handle, it has operating handle and is arranged at least two bearing pins on the said operating handle, and said lower clamp is provided with the pilot hole that cooperates with said bearing pin.
Can find out that from above-mentioned technical scheme the twin shaft unrelieved stress bringing device that waits provided by the invention during use, places test piece between anchor clamps and the lower clamp,, win trim ring and second trim ring compressed to test piece then through screwing upper and lower anchor clamps.Because first trim ring is different with the second trim ring coaxial arrangement and diameter, cause that the centre position of test piece and marginal position advance in the opposite direction respectively, test with completion through constantly the closing on of first trim ring and second trim ring.The present invention can control the stress that is applied through the screw size of power of control.The twin shaft unrelieved stress bringing device that waits provided by the invention can obtain the tension and the compressive stress of different numerical ranges simultaneously, and simple to operate, numerical values recited is controlled, for the derivation of formula of residual stress provides necessary conditions.The present invention has overcome and must cut the shortcoming that could obtain compressive stress to sample, realizes that zero destroys.After utilizing these twin shaft unrelieved stress bringing devices that material has been applied stress, it is carried out nano indentation test, can set up the relation between indentation parameters and the unrelieved stress, obtain the Calculation of Residual model.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The structural representation that waits twin shaft unrelieved stress bringing device that Fig. 1 provides for the embodiment of the invention;
The structural representation of the last anchor clamps that Fig. 2 provides for the embodiment of the invention;
The structural representation of the lower clamp that Fig. 3 provides for the embodiment of the invention;
The structural representation of the first handle that Fig. 4 provides for the embodiment of the invention;
Fig. 5 is the vertical view of Fig. 4;
The structural representation of the second handle that Fig. 6 provides for the embodiment of the invention;
Fig. 7 is the vertical view of Fig. 6.
Embodiment
The invention discloses a kind of twin shaft unrelieved stress bringing device that waits,, and can not damage sample so that the stress that is applied is controlled.
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
See also Fig. 1-Fig. 3, the structural representation that waits twin shaft unrelieved stress bringing device that Fig. 1 provides for the embodiment of the invention; The structural representation of the last anchor clamps that Fig. 2 provides for the embodiment of the invention; The structural representation of the lower clamp that Fig. 3 provides for the embodiment of the invention.
The bringing device such as unrelieved stress such as twin shaft such as grade that the embodiment of the invention provides comprises anchor clamps 1 and lower clamp 2.Wherein, last anchor clamps 1 have first trim ring 12, and lower clamp 2 is threaded with last anchor clamps 1, and it has second trim ring, 23, the first trim rings 12 and second trim ring, 23 coaxial arrangement, and diameter is different.
The twin shaft unrelieved stress bringing device that waits provided by the invention during use, places test piece 3 between anchor clamps 1 and the lower clamp 2, then through screwing upper and lower anchor clamps, win trim ring 12 and 23 pairs of test pieces 3 of second trim ring is compressed.Because first trim ring 12 is different with second trim ring, 23 coaxial arrangement and diameter, cause that the centre position of test piece 3 and marginal position advance in the opposite direction respectively, test with completion through constantly the closing on of first trim ring 12 and second trim ring 23.The present invention can control the stress that is applied through the screw size of power of control.The twin shaft unrelieved stress bringing device that waits provided by the invention can obtain the tension and the compressive stress of different numerical ranges simultaneously, and simple to operate, numerical values recited is controlled, for the derivation of formula of residual stress provides necessary conditions.The present invention has overcome and must cut the shortcoming that could obtain compressive stress to sample, realizes that zero destroys.After utilizing these twin shaft unrelieved stress bringing devices that material has been applied stress, it is carried out nano indentation test, can set up the relation between indentation parameters and the unrelieved stress, obtain the Calculation of Residual model.
In the present embodiment, the diameter of first trim ring 12 is greater than the diameter of second trim ring 23.First trim ring 12 presses down top test piece 3 on test piece 3, the second trim rings 23, so that the downside of test piece 3 in second trim ring, 23 zones forms the compressive stress zone, the upside in second trim ring, 23 zones forms the tension zone.
The first outer shroud auxiliary section and first trim ring 12 extend to same direction, and the height of first trim ring 12 is lower than the height of the first outer shroud auxiliary section; The second outer shroud auxiliary section and second trim ring 23 extend to same direction.Last anchor clamps 1 are provided with the inboard that first elongated hole, 11, the first elongated holes 11 are positioned at first trim ring 12; Lower clamp 2 is provided with the inboard that second elongated hole, 22, the second elongated holes 22 are positioned at second trim ring 23.First elongated hole 11 and spatial accommodation 14 coaxial arrangement; Second elongated hole 22 and spatial accommodation 21 coaxial arrangement.
See also Fig. 4 and Fig. 5, the structural representation of the first handle that Fig. 4 provides for the embodiment of the invention; Fig. 5 is the vertical view of Fig. 4.
In order further to optimize technique scheme, the present invention also can comprise first handle, and it has operating handle 31 and is arranged at least two bearing pins 32 on the operating handle 31, and last anchor clamps 1 are provided with the pilot hole 13 that cooperates with bearing pin 32.Bearing pin 32 through with first handle inserts in the pilot hole 13 of going up anchor clamps 1, and this first handle of turn can rotate anchor clamps 1 easily then, to accomplish test job.
The present invention also can comprise second handle, and it has operating handle and is arranged at least two bearing pins 42 on the operating handle 41, and lower clamp 2 is provided with the pilot hole 24 that cooperates with bearing pin 42.Bearing pin 42 through with second handle inserts in the pilot hole 24 of lower clamp 2, and this second handle of turn can rotate lower clamp 2 easily then, to accomplish test job.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (8)
1. one kind is waited twin shaft unrelieved stress bringing device, it is characterized in that, comprising:
Last anchor clamps (1), it has first trim ring (12);
With the lower clamp (2) that said upward anchor clamps (1) are threaded, it has second trim ring (23), said first trim ring (12) and said second trim ring (23) coaxial arrangement, and diameter is different.
2. the twin shaft unrelieved stress bringing device that waits as claimed in claim 1 is characterized in that the diameter of said first trim ring (12) is greater than the diameter of said second trim ring (23).
3. the twin shaft unrelieved stress bringing device that waits as claimed in claim 1 is characterized in that said upward anchor clamps (1) are circular configuration, and said first trim ring (12) is arranged at said center of going up anchor clamps (1);
Said lower clamp (2) is a circular configuration, and said second trim ring (23) is arranged at the center of said lower clamp (2).
4. the twin shaft unrelieved stress bringing device that waits as claimed in claim 1; It is characterized in that; The said anchor clamps (1) of going up have the first outer shroud auxiliary section; The outer ring of the said first outer shroud auxiliary section is provided with external thread, and said lower clamp (2) has the second outer shroud auxiliary section, and the inner ring of the said second outer shroud auxiliary section is provided with the internal thread that cooperates with said external thread.
5. the twin shaft unrelieved stress bringing device that waits as claimed in claim 4 it is characterized in that said first outer shroud auxiliary section and said first trim ring (12) extend to same direction, and the height of said first trim ring (12) is lower than the height of the said first outer shroud auxiliary section;
Said second outer shroud auxiliary section and said second trim ring (23) extend to same direction.
6. the twin shaft unrelieved stress bringing device that waits as claimed in claim 5 is characterized in that the said anchor clamps (1) of going up are provided with first elongated hole (11), and said first elongated hole (11) is positioned at the inboard of said first trim ring (12);
Said lower clamp (2) is provided with second elongated hole (22), and said second elongated hole (22) is positioned at the inboard of said second trim ring (23).
7. like each described twin shaft unrelieved stress bringing device that waits of claim 1-6; It is characterized in that; Also comprise first handle; It has operating handle and is arranged at least two bearing pins (32) on the said operating handle (31), and the said anchor clamps (1) of going up are provided with the pilot hole (13) that cooperates with said bearing pin (32).
8. like each described twin shaft unrelieved stress bringing device that waits of claim 1-6; It is characterized in that; Also comprise second handle; It has operating handle and is arranged at least two bearing pins (42) on the said operating handle (41), and said lower clamp (2) is provided with the pilot hole (24) that cooperates with said bearing pin (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103220781A CN102507318B (en) | 2011-10-20 | 2011-10-20 | Equi-biaxial residual stress applying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103220781A CN102507318B (en) | 2011-10-20 | 2011-10-20 | Equi-biaxial residual stress applying device |
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| Publication Number | Publication Date |
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| CN102507318A true CN102507318A (en) | 2012-06-20 |
| CN102507318B CN102507318B (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103220781A Active CN102507318B (en) | 2011-10-20 | 2011-10-20 | Equi-biaxial residual stress applying device |
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| CN (1) | CN102507318B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439206A (en) * | 2013-09-13 | 2013-12-11 | 徐州工程学院 | Micro-indentation-based method for testing residual stress of tiny area of tough block material |
| CN110530718A (en) * | 2019-08-29 | 2019-12-03 | 江苏大学 | A kind of twin shaft residual stress introducing device based on white light interferometric surface topography |
| CN114509339A (en) * | 2022-01-14 | 2022-05-17 | 东南大学 | Double-shaft residual stress pressing-in calibration device |
Citations (6)
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| US4899581A (en) * | 1988-02-19 | 1990-02-13 | Massachusetts Institute Of Technology | Method and apparatus for the quantitative measurement of adhesion of thin films |
| CN1326548A (en) * | 1998-11-16 | 2001-12-12 | 赫尔辛基理工大学 | Method for producing defects and tensile residual stresses |
| CN2469434Y (en) * | 2001-04-04 | 2002-01-02 | 中国科学院金属研究所 | Indentation making equipment measuirng residual stress by impact impressing method |
| CN101013105A (en) * | 2007-01-15 | 2007-08-08 | 武汉晶泰科技有限公司 | Device for measuring change of material residual stress |
| CN101051018A (en) * | 2007-01-12 | 2007-10-10 | 西北工业大学 | Film residual stress measuring structure and its producing and testing method |
| WO2008096914A1 (en) * | 2007-02-06 | 2008-08-14 | Frontics, Inc. | Estimation of non-equibiaxial stress using instrumented indentation technique |
-
2011
- 2011-10-20 CN CN2011103220781A patent/CN102507318B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4899581A (en) * | 1988-02-19 | 1990-02-13 | Massachusetts Institute Of Technology | Method and apparatus for the quantitative measurement of adhesion of thin films |
| CN1326548A (en) * | 1998-11-16 | 2001-12-12 | 赫尔辛基理工大学 | Method for producing defects and tensile residual stresses |
| CN2469434Y (en) * | 2001-04-04 | 2002-01-02 | 中国科学院金属研究所 | Indentation making equipment measuirng residual stress by impact impressing method |
| CN101051018A (en) * | 2007-01-12 | 2007-10-10 | 西北工业大学 | Film residual stress measuring structure and its producing and testing method |
| CN101013105A (en) * | 2007-01-15 | 2007-08-08 | 武汉晶泰科技有限公司 | Device for measuring change of material residual stress |
| WO2008096914A1 (en) * | 2007-02-06 | 2008-08-14 | Frontics, Inc. | Estimation of non-equibiaxial stress using instrumented indentation technique |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439206A (en) * | 2013-09-13 | 2013-12-11 | 徐州工程学院 | Micro-indentation-based method for testing residual stress of tiny area of tough block material |
| CN103439206B (en) * | 2013-09-13 | 2015-03-25 | 徐州工程学院 | Micro-indentation-based method for testing residual stress of tiny area of tough block material |
| CN110530718A (en) * | 2019-08-29 | 2019-12-03 | 江苏大学 | A kind of twin shaft residual stress introducing device based on white light interferometric surface topography |
| CN110530718B (en) * | 2019-08-29 | 2021-12-17 | 江苏大学 | Double-shaft residual stress introducing device based on white light interferometry surface morphology |
| CN114509339A (en) * | 2022-01-14 | 2022-05-17 | 东南大学 | Double-shaft residual stress pressing-in calibration device |
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| Publication number | Publication date |
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| CN102507318B (en) | 2013-11-13 |
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