CN104807695A - Standard distance section positioning device for thin-walled tubular fatigue specimen - Google Patents
Standard distance section positioning device for thin-walled tubular fatigue specimen Download PDFInfo
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- CN104807695A CN104807695A CN201510176428.6A CN201510176428A CN104807695A CN 104807695 A CN104807695 A CN 104807695A CN 201510176428 A CN201510176428 A CN 201510176428A CN 104807695 A CN104807695 A CN 104807695A
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- cover plate
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- specimen
- distance section
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Abstract
The invention discloses a standard distance section positioning device for a thin-walled tubular fatigue specimen, and relates to a testing device. The standard distance section positioning device is characterized by comprising a base (1), a mold (2), a right cover plate (3), the specimen (4), a rod (5) provided with threads at two ends, a dotter (6), nuts (7), screws (8) and an upper cover plate (9), wherein the specimen (4) is arranged in the mold (2) of the base (1), the mold (2) cooperates with grooves in the base (1), the specimen (4) is axially positioned by the right cover plate (3), the upper cover plate (9) and the mold (2) are fixed through the screws (8), the rod (5) provided with the threads at the two ends penetrates into a thin-walled tube, ends of the rod (5) provided with the threads at the two ends are locked through the nuts (7), the base (1), a left cover plate and the right cover plate (3), and the dotter (6) cooperates with dotter holes. The size of a standard distance section of the thin-walled tubular specimen is determined accurately, so that a more accurate testing result is obtained.
Description
Technical field
The present invention relates to a kind of proving installation, particularly relate to a kind of thin-walled tubular fatigue test piece scale distance section locating device.
Background technology
Shape, the size of fatigue sample are determined according to test condition, the ability of testing machine and the size of extensometer; match with the chuck of testing machine in its end; the bare terminal end of general test specimen is column; how fixing test specimen to guarantee to obtain accurate gauge length fragment position, is a key issue in process of the test.。
Summary of the invention
The object of the present invention is to provide a kind of thin-walled tubular fatigue test piece scale distance section locating device, this device is that the gauge length size of thin-walled tubular fatigue sample is determined, carry out the test of strain controlling Multiaxial Low Cycle Fatigue, adopt accurately determining of the gauge length section size of thin-walled tubular test specimen, thus obtain more accurate test findings.
The object of the invention is to be achieved through the following technical solutions:
A kind of thin-walled tubular fatigue test piece scale distance section locating device, described device comprises base, mould, right cover plate, test specimen, the rod of both end thread, tapper, nut, screw, upper cover plate; Test specimen is placed in the mould of base, and mould coordinates with bottom tub, and test specimen is through right cover plate axial location, upper cover plate and mould are fixed through screw, the rod of both end thread penetrates in thin walled tube, and carry out end locking with nut and base, left cover, right cover plate, tapper coordinates with tapper hole.
Advantage of the present invention and effect are:
The gauge length size that the present invention is applied to thin-walled tubular fatigue sample is determined, carry out the test of strain controlling Multiaxial Low Cycle Fatigue, adopt thin-walled tubular test specimen can obtain test findings more accurate than bar, the test figure post-processed of thin-walled tubular test specimen is more convenient simultaneously.In order to obtain more accurate test findings, extensometer end mostly is taper, forms point cantact with surface of test piece, and the good contact therefore accurately determined gauge length fragment position, size before test and realize surface of test piece and extensometer is the key issue in testing.Therefore, thin-walled tubular fatigue test piece scale distance size determining device of the present invention has important realistic meaning.
Accompanying drawing explanation
Fig. 1 is each structural representation of fatigue test piece scale distance section locating device of the present invention;
Fig. 2 is the rod assembling schematic perspective view of base of the present invention, mould, test specimen, both end thread;
Fig. 3 is one-piece construction of the present invention assembling schematic perspective view;
Fig. 4 is structure of the present invention assembling perspective view.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the present invention is described in detail.
Parts in figure: 1. rod 6. tapper 7. nut 8. screw 9. upper cover plate of base 2. mould 3. right cover plate 4. test specimen 5. both end thread.
Thin-walled tubular fatigue test piece scale distance section locating device of the present invention, is made up of the rod of base (band left cover), right cover plate, upper cover plate, mould, both end thread, nut, screw and tapper.After the mould of base put into by test specimen, mould is coordinated with bottom tub, the location, front and back of test specimen can be ensured.Right cover plate ensures the axial location of test specimen.Upper cover plate and mould, after screw is fixing, ensure before and after test specimen, axial stable position further, prepare for carrying out gauge length location.The rod of both end thread and nut prevent test specimen from carrying out rotating in gauge length process.Tapper coordinates with tapper hole, then under external force, gets ready, complete gauge length position fixing process in fixing surface of test piece.Thin-walled tubular fatigue test piece scale distance section locating device, can realize the accurate location to thin-walled tubular fatigue test piece scale distance section, thus improves test measuring accuracy.Under the cooperation of base, mould, can realize locating the front and back of test specimen; Base and right cover plate can ensure the axial location of test specimen; Place upper cover plate, adopt screw and mould to fix, again guarantee that test specimen does not occur axially and moves forward and backward; The rod of both end thread is put into thin walled tube, with nut, two ends is locked, prevent test specimen from carrying out rotating in gauge length process.
During operation, first test specimen 4 is put into mould 2, then mould is put into base 1 groove, realize locating the front and back of test specimen 4.Secondly, put into right cover plate 3 pairs of test specimens and carry out axial location.Again, place upper cover plate 9, itself and mould 2 are fixed through screw 8, again guarantee that test specimen does not occur axially and moves forward and backward; The rod 6 of both end thread is penetrated in thin walled tube, carries out end locking with nut 7 and base left cover, right cover plate 3, prevent test specimen from carrying out rotating in gauge length process.Finally, tapper is coordinated with tapper hole 5, apply suitable external force, surface of test piece is got ready, complete gauge length position fixing process.
Claims (1)
1. a thin-walled tubular fatigue test piece scale distance section locating device, it is characterized in that, described device comprises base (1), mould (2), right cover plate (3), test specimen (4), the rod (5) of both end thread, tapper (6), nut (7), screw (8), upper cover plate (9); Test specimen (4) is placed in the mould (2) of base (1), mould (2) and base (1) slot fit, test specimen (4) is through right cover plate (3) axial location, upper cover plate (9) is fixed through screw (8) with mould (2), the rod (5) of both end thread penetrates in thin walled tube, carry out end locking with nut (7) and base (1), left cover, right cover plate (3), tapper (6) coordinates with tapper hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510176428.6A CN104807695A (en) | 2015-04-15 | 2015-04-15 | Standard distance section positioning device for thin-walled tubular fatigue specimen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510176428.6A CN104807695A (en) | 2015-04-15 | 2015-04-15 | Standard distance section positioning device for thin-walled tubular fatigue specimen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104807695A true CN104807695A (en) | 2015-07-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510176428.6A Pending CN104807695A (en) | 2015-04-15 | 2015-04-15 | Standard distance section positioning device for thin-walled tubular fatigue specimen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104807695A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975710A (en) * | 2010-09-19 | 2011-02-16 | 安徽农业大学 | Tensile specimen scribing machine |
| CN102059670A (en) * | 2010-11-26 | 2011-05-18 | 北京工业大学 | Rod-like fatigue test piece scale distance positioning device |
| CN202512017U (en) * | 2011-12-29 | 2012-10-31 | 华南理工大学 | Device for gauge length graving and assisted final gauge length measurement of tension test piece |
| CN204514709U (en) * | 2015-04-15 | 2015-07-29 | 沈阳化工大学 | A kind of thin-walled tubular fatigue test piece scale distance section locating device |
-
2015
- 2015-04-15 CN CN201510176428.6A patent/CN104807695A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975710A (en) * | 2010-09-19 | 2011-02-16 | 安徽农业大学 | Tensile specimen scribing machine |
| CN102059670A (en) * | 2010-11-26 | 2011-05-18 | 北京工业大学 | Rod-like fatigue test piece scale distance positioning device |
| CN202512017U (en) * | 2011-12-29 | 2012-10-31 | 华南理工大学 | Device for gauge length graving and assisted final gauge length measurement of tension test piece |
| CN204514709U (en) * | 2015-04-15 | 2015-07-29 | 沈阳化工大学 | A kind of thin-walled tubular fatigue test piece scale distance section locating device |
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| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
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Application publication date: 20150729 |
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| WD01 | Invention patent application deemed withdrawn after publication |