CN105067459A - Sample introduction prestressing force fixation apparatus for nanometer indentation tester - Google Patents
Sample introduction prestressing force fixation apparatus for nanometer indentation tester Download PDFInfo
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- CN105067459A CN105067459A CN201510445449.3A CN201510445449A CN105067459A CN 105067459 A CN105067459 A CN 105067459A CN 201510445449 A CN201510445449 A CN 201510445449A CN 105067459 A CN105067459 A CN 105067459A
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- screw rod
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a sample introduction prestressing force fixation apparatus for a nanometer indentation tester. The sample introduction prestressing force fixation apparatus comprises a base, wherein the base is provided with a groove, one side of the groove is provided with a vertically distributed tooth groove, the middle portion of the other side of the groove is provided with a vertical sliding groove, a sliding block having a vertically distributed tooth groove is matched with the sliding groove, the base on the rear side of the sliding block is provided with a screw hole, a screw rod penetrates through the screw hole and forms threaded matching with the screw hole, a pressure sensor is arranged between the screw rod and the sliding block, the screw rod is provided with a screw nut forming threaded matching with the screw rod, and the outer end of the screw rod is provided with a handle. According to the present invention, both side surfaces of the groove of the base are provided with the vertical tooth grooves, the cylinders are placed into the tooth grooves on both sides of the groove, the sample is placed between the cylinders, the sample is bent through the rotating advancement of the screw rod to make the sample produce the stressing force, the pressure sensor acquires the stressing force, and the threaded rotating of the screw rod makes the force applying stable, such that the control of the prestressing force is precise, simple and effective.
Description
Technical field
The present invention relates to prestress stationary installation, particularly nanometer press fit instrument sample introduction prestress stationary installation.
Background technology
It is a kind of new technology of rising in recent years that nanometer press-in is measured, and is widely used in many scientific domains.It measures consistency and elasticity modulus etc. by the load and the degree of depth recording press-in continuously.This technology indirectly can converse contact area from load and depth survey, avoids finding Indentation position and measuring the loaded down with trivial details work participating in the area of indentation, significantly reduces measuring error.Compared with traditional Material Testing Machine, this technology does not need to destroy material, and the precision simultaneously measured also improves, and the scope of measurement is more extensive, can without the mechanical property directly obtaining membraneous material when separating film and base material.
In order to study the impact of unrelieved stress on material mechanical performance, the unrelieved stress existed by material in reality of being compared by sample introduction prestress, is relended and helps nanometer press fit instrument to study the mechanical property of sample, and can only be applicable to the problem of reduced size sample.
The prestress stationary installation for nanometer press fit instrument sample introduction also not relevant at present.
Summary of the invention
For solving the existing problem not possessing the prestress stationary installation of nanometer press fit instrument sample introduction, provide a kind of nanometer press fit instrument sample introduction prestress stationary installation, this stationary installation, rational in infrastructure, small and exquisite, easy to operate, stress is accurately adjustable.
For achieving the above object, the present invention is by the following technical solutions:
Nanometer press fit instrument sample introduction prestress stationary installation, comprise base, base is provided with fluting, the side of fluting is provided with the teeth groove of vertical distribution, the middle part of the opposite side of fluting is provided with vertical chute, and a slide block with vertical distribution teeth groove matches with chute; Base on rear side of slide block is provided with screw, and a screw mandrel is through screw threaded engagement with it, and be provided with pressure transducer between screw mandrel and slide block, screw mandrel is provided with the nut of threaded engagement, and screw mandrel outer end is provided with handle.
Above-mentioned nanometer press fit instrument sample introduction prestress stationary installation, described pressure transducer is thin-film pressure sensor.
Above-mentioned nanometer press fit instrument sample introduction prestress stationary installation, screw mandrel rear end is provided with non-circular hole, and one handle front end is the not rounded tenon coordinated with this non-circular hole.
Cylinder, all with vertical teeth groove, is placed in the teeth groove of fluting both sides, then is placed between cylinder by sample by two sides of base fluting, rotates to advance to bend sample by screw mandrel, makes sample produce stress, obtains stress intensity by pressure transducer.
The screw thread rotation of screw mandrel makes firmly steadily, makes to control prestress accurately effectively simple.
Pressure data is sent to data acquisition test device by pressure transducer, is then transferred to computer, carries out data analysis and process by software, finally obtains accurate bending stress.Stress to reach locked for the position of screw mandrel after predetermined requirement by nut, effectively fixes the prestress of sample.
Apparatus of the present invention can bend scheme according to the size of sample and flexible degree adjustment within the specific limits simultaneously: when the fragility of sample is very large, realize four-point bending more difficult, longer employing three-point bending specimen size can done as far as possible; When the flexibility of sample is pretty good, both can realize four-point bending, and also can realize three-point bending, that just can obtain different stress states.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is the structural representation of duty of the present invention.
Be labeled as in figure: 1 base, the slide block on 2 fluting right sides, the teeth groove on 21 slide blocks, the fluting of 3 bases, the teeth groove in 4 fluting left sides, 5 right cylinders, 6 samples, 7 pressure transducers, 8 screw mandrels, 81 nuts, the square hole of 82 screw mandrels, 9 handles, the square tenon of 91 handles, the chute on 10 base fluting right sides.
Embodiment
Nanometer press fit instrument sample introduction prestress stationary installation, comprise base 1, base is provided with fluting 3, the side of fluting, be left side in this example, be provided with the teeth groove 4 of vertical distribution, the opposite side of fluting, match with chute with the vertical slide block 2 distributing teeth groove for the middle part on right side is provided with vertical chute 10, in this example; Base on rear side of slide block is provided with screw, and a screw mandrel 8 is through screw threaded engagement with it, and be provided with thin-film pressure sensor 7 between screw mandrel and slide block, screw mandrel is provided with the nut 81 of threaded engagement, and screw mandrel outer end is provided with handle 9.Screw mandrel rear end is provided with the square hole 82 of not rounded, and handle front end is the square tenon 91 of not rounded coordinated with this non-circular hole.
First suitable teeth groove is selected to fix sample 6 on right cylinder 5, then constantly axially straight ahead is made by rotatable handle screw mandrel, promote teeth groove slide block to move, move with right cylinder simultaneously, sample is forced to occur bending and deformation, the change of screw mandrel pressed end on-load pressure is obtained by thin-film pressure sensor, again pressure data is transferred to pressure data harvester, corresponding stress value is obtained again by computer process, when the prestress value of sample reaches the stress value of setting, namely stop loading, simultaneously with to base side by locked for nut on screw mandrel, prevent stress value from changing, finally take off handle.
Claims (3)
1. nanometer press fit instrument sample introduction prestress stationary installation, comprise base, it is characterized in that being provided with fluting on base, the side of fluting is provided with the teeth groove of vertical distribution, the middle part of the opposite side of fluting is provided with vertical chute, and a slide block with vertical distribution teeth groove matches with chute; Base on rear side of slide block is provided with screw, and a screw mandrel is through screw threaded engagement with it, and be provided with pressure transducer between screw mandrel and slide block, screw mandrel is provided with the nut of threaded engagement, and screw mandrel outer end is provided with handle.
2. nanometer press fit instrument sample introduction prestress stationary installation as claimed in claim 1, is characterized in that pressure transducer is thin-film pressure sensor.
3. nanometer press fit instrument sample introduction prestress stationary installation as claimed in claim 1, it is characterized in that screw mandrel rear end is provided with non-circular hole, one handle front end is the not rounded tenon coordinated with this non-circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510445449.3A CN105067459A (en) | 2015-07-27 | 2015-07-27 | Sample introduction prestressing force fixation apparatus for nanometer indentation tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510445449.3A CN105067459A (en) | 2015-07-27 | 2015-07-27 | Sample introduction prestressing force fixation apparatus for nanometer indentation tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105067459A true CN105067459A (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510445449.3A Pending CN105067459A (en) | 2015-07-27 | 2015-07-27 | Sample introduction prestressing force fixation apparatus for nanometer indentation tester |
Country Status (1)
| Country | Link |
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| CN (1) | CN105067459A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580333A (en) * | 2018-12-19 | 2019-04-05 | 浙江浙能技术研究院有限公司 | A kind of high temperature stress oxidation test macro |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110049134A (en) * | 2009-11-04 | 2011-05-12 | 성균관대학교산학협력단 | Apparatus for fixing specimen for tensile test |
| CN202725686U (en) * | 2012-05-09 | 2013-02-13 | 江南嘉捷电梯股份有限公司 | Guide rail correcting device of escalator or moving sidewalk |
| CN202903617U (en) * | 2012-10-29 | 2013-04-24 | 吉林大学 | In-situ three-point bending test device |
| CN103308404A (en) * | 2013-06-14 | 2013-09-18 | 吉林大学 | In-situ nano-indentation tester based on adjustable stretching-bending preload |
| CN204789197U (en) * | 2015-07-27 | 2015-11-18 | 浙江工业大学 | Nanometer is impressed for appearance sample and is introduced prestressing force fixing device |
-
2015
- 2015-07-27 CN CN201510445449.3A patent/CN105067459A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110049134A (en) * | 2009-11-04 | 2011-05-12 | 성균관대학교산학협력단 | Apparatus for fixing specimen for tensile test |
| CN202725686U (en) * | 2012-05-09 | 2013-02-13 | 江南嘉捷电梯股份有限公司 | Guide rail correcting device of escalator or moving sidewalk |
| CN202903617U (en) * | 2012-10-29 | 2013-04-24 | 吉林大学 | In-situ three-point bending test device |
| CN103308404A (en) * | 2013-06-14 | 2013-09-18 | 吉林大学 | In-situ nano-indentation tester based on adjustable stretching-bending preload |
| CN204789197U (en) * | 2015-07-27 | 2015-11-18 | 浙江工业大学 | Nanometer is impressed for appearance sample and is introduced prestressing force fixing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580333A (en) * | 2018-12-19 | 2019-04-05 | 浙江浙能技术研究院有限公司 | A kind of high temperature stress oxidation test macro |
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Application publication date: 20151118 |
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| RJ01 | Rejection of invention patent application after publication |