CN110146373A - A kind of standard fasteners cryogenic mechanics performance test fixture - Google Patents
A kind of standard fasteners cryogenic mechanics performance test fixture Download PDFInfo
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- CN110146373A CN110146373A CN201910456347.XA CN201910456347A CN110146373A CN 110146373 A CN110146373 A CN 110146373A CN 201910456347 A CN201910456347 A CN 201910456347A CN 110146373 A CN110146373 A CN 110146373A
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- tooling
- flange platform
- standard fasteners
- sample
- insulation barrel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of tooling of standard fasteners cryogenic mechanics performance test, which includes sample locking upper fixture (1), sample cooperation flange platform (2), flange platform fixed lower fixture (3), insulation barrel body case (4), tooling holding rod (5) and heat preservation staving cover board (6)；Tooling internal structure simply cooperates precisely, it is easy for installation, test (low) wide temperature range, manufacturing cost is low and consumptive material is few, can be used for that the mechanical property parameters of various types and various sizes standard fasteners at low ambient temperatures are tested and studied, true with test result, reliable, repeatable, testing cost is low, long service life, it is convenient for installation and maintenance the advantages that.
Description
Technical field
The present invention relates to a kind of tooling of Mechanics Performance Testing, standard fasteners is especially related at low ambient temperatures
The tooling of Mechanics Performance Testing.
Background technique
Standard fasteners is widely applied in machine-building and processing and other fields, when it is applied to the model of aerospace field
When on product, the research that mechanical property under the research of mechanical property, especially low temperature environment is carried out to it is very necessary.However,
For the test of the mechanical property of standard fasteners at low ambient temperatures, there are larger difficulty.Currently, generalling use import and matching
There is mechanics of the large-scale mechanics machine of special low temperature environment chamber and matching tooling to standard fasteners at low ambient temperatures
Performance is tested.However, if this test method has the following disadvantages: the large-scale mechanics machine of 1) external import equipped with corresponding
High-low-temperature environmental testing device, price costly, and the standard fasteners size under its included tooling and domestic standard
It mismatches；2) for the mechanics machine of existing configured low temperature environment testing apparatus, the test stream of material at low temperature mechanical property
Journey is complicated, needs replacing the accuracy that corresponding collet carrys out guarantee test, and cryogenic test equipment be only capable of with single testing machine into
Row matching, does not have universality；3) it is purchased again for having the laboratory of mechanics machine due to the limitation in place space
Import testing machine and the incomplete testing machine of previous function is scrapped, higher cost and result in waste of resources；4) Conventional cryogenic
Complicated operation for test method and experimental rig, as model task is increasing, for needing to carry out high-volume in low temperature
The standard fasteners reviewed under environment, time cost are higher, it is difficult to meet production and requirement.Therefore, it is fastened for standard
The production requirement that part cryogenic mechanics performance is reviewed needs to develop a kind of novel cryogenic mechanics performance test fixture, solves test
Device is at high price, the covering of tooling size is not complete, does not have the problems such as universality, while energy using complex steps, experimental rig
Meet the test of quick, effective, large batch of cryogenic mechanics performance, thus for the cryogenic mechanics performance of standard fasteners research and
Experimental basis is established in production.
Summary of the invention
The present invention to be designed and the technical issues of solution be invent one kind can apply it is enterprising in various mechanics machines
Capable quick, effective, high-volume and the cryogenic mechanics performance test fixture for covering various types and dimensional standard fastener.The tooling
Including sample locking upper fixture (1), sample cooperation flange platform (2), flange platform fixed lower fixture (3), insulation barrel body case (4),
Tooling holding rod (5) and heat preservation staving cover board (6)；Sample locking upper fixture (1) for fastening test block, match by the sample
Flange platform (2) and flange platform fixed lower fixture (3) are fixed on mechanics by the aid end of sample locking upper fixture (1) and try
Test the upper grip of machine；The insulation barrel body case (4) is by fixed lower fixture (3) aid of the flange platform in mechanics machine
On lower collet；Sample cooperation flange platform (2) is connected by the way of welding with the tooling holding rod (5), the tooling
Holding rod (5) is for picking and placing test block；The heat preservation staving cover board (6) is provided on insulation barrel body case (4) upper end cover.
Preferably, sample cooperation flange platform (2) has flange platform lower end surface through-hole (23) and flange platform upper surface logical
Hole (21), for across test block.
Preferably, test block is pierced by the standard of mode and sample locking upper fixture (1) that part is connected through a screw thread
(11) match at fastener threads locking.
Preferably, fixed lower fixture (3) of the flange platform and the insulation barrel body case (4) are welded to connect.
Preferably, the flange platform fixed lower fixture (3) includes clamping stick under flange platform cooperation inner face (31) and tooling
(32), flange platform cooperation inner face (31) is fixed on the upper folder of mechanics machine by sample locking upper fixture (1)
Head, the insulation barrel body case (4) is by clamping stick (32) aid on the lower collet of mechanics machine under the tooling.
Preferably, one block of foil for having through-hole is covered in the outer surface of flange platform lower end surface through-hole (23),
(22) are fixed on flange by screw at the Anti-fall sheet metal screw-threaded coupling of the foil and flange platform lower end surface
Platform lower end surface, to prevent test block after the completion of test to be pulled off and fall among tooling staving.
Preferably, the insulation barrel body case (4) is provided with layer (41) and insulation barrel volume surrounding (42) in insulation barrel body
Double-layer structure greatly improves the thermal insulation property of tooling.
Preferably, the inner surface of layer (41) installs thermocouple in the insulation barrel body, to the real-time temperature of test whole process
Degree is accurately measured and is controlled；
Preferably, the size and the size phase of test block of locking upper fixture (1) and sample cooperation flange platform (2)
It is mating.
A kind of tooling of standard fasteners cryogenic mechanics performance test of the invention, tooling internal structure simply cooperate essence
Standard, it is easy for installation, (low) wide temperature range is tested, manufacturing cost is low and consumptive material is few, can be used for various types and various rulers
The mechanical property parameters of very little standard fasteners at low ambient temperatures are tested and are studied, also expansible to be applied to various metal materials
Expect the cryomechanics test of tensile sample, nonmetallic materials tensile sample.Tooling can be directly installed on original mechanics machine
On, have test result it is true, reliable, repeatable, testing cost is low, long service life, it is convenient for installation and maintenance the advantages that.
Detailed description of the invention
Fig. 1 is the assembling schematic diagram of standard fasteners cryogenic mechanics performance test fixture of the present invention；
Fig. 2 is that sample locks upper fixture structural schematic diagram in the present invention；
Fig. 3 is that sample cooperates flange platform structural schematic diagram in the present invention；
Fig. 4 is the fixed lower clamp structure schematic diagram of flange platform in the present invention；
Fig. 5 is insulation barrel body case structural schematic diagram in the present invention.
In figure
1: sample locks upper fixture 11: at standard fasteners screw-threaded coupling
2: sample cooperates flange platform 21: flange platform upper surface through-hole
22: 23 at Anti-fall sheet metal screw-threaded coupling: the through-hole of flange platform lower end surface
3: the fixed lower fixture 31 of flange platform: flange platform cooperates inner face
32: stick 4: insulation barrel body case is clamped under tooling
41: layer 42 in insulation barrel body: insulation barrel volume surrounding
43: lower fixture mating surface 5: tooling holding rod
6: heat preservation staving cover board
Specific embodiment
By the technology contents that the present invention will be described in detail, construction feature, reached purpose and efficacy, below in conjunction with embodiment
And attached drawing is cooperated to be described in detail.
A kind of tooling of standard fasteners cryogenic mechanics performance test of the invention includes the following:
1) tested standard fasteners is mounted on as required among the tooling of corresponding size；Include:
(1) by tested standard fasteners penetrating and pass sequentially through method from the sample of corresponding size cooperation 2 bottom of flange platform
The lower end surface Lan Tai through-hole 23 and flange platform upper surface through-hole 21 are connected through a screw thread as shown in figure 3, standard fasteners is pierced by part
Mode and corresponding size sample locking upper fixture 1 standard fasteners screw-threaded coupling at 11 match, as shown in Figure 2；
(2) after completing above-mentioned steps (1), in flange platform lower end surface, the outer surface of through-hole 23 covers one piece thin with through-hole
22 modes being connected by screw to and flange at the Anti-fall sheet metal screw-threaded coupling of sheet metal, sheet metal and flange platform lower end surface
Platform lower end surface is fixed, to prevent standard fasteners after the completion of test to be pulled off and fall among tooling staving.
In above-mentioned two step, if standard fasteners size is different, need to replace sample locking upper fixture 1 and sample simultaneously
Cooperate flange platform 2,11 is different from flange platform upper surface 21 sizes of through-hole at the standard fasteners screw-threaded coupling under different sizes.
2) tooling external structure is connected and fixed by welding；Include:
The fixed lower fixture 3 of flange platform is connected with insulation barrel body case 4 by welding, as shown in Figure 1, wherein
Insulation barrel body case 4 has the double-layer structure of layer 41 and insulation barrel volume surrounding 42 in insulation barrel body, as shown in figure 5, greatly promoting
The thermal insulation property of tooling, sample cooperation flange platform 2 with tooling holding rod 5 is same is connected by the way of welding, such as Fig. 1 institute
Show, test process only needs to carry out setting-out and sampling by tooling holding rod 5, considerably increases the safety of whole operation process
Energy；
Above-mentioned steps, suitable for the standard fasteners size of various types and size, the i.e. standard of different type and size
When fastener carries out cryogenic mechanics performance test, step 2) is identical.
3) a whole set of low-temperature test tooling is mounted on mechanics machine by way of dimensional fits；Include:
(1) after completing step 2), by the fixed lower fixture 3 of flange platform with insulation barrel body case 4 by clamping stick 32 under tooling
Aid is on the lower collet of mechanics machine；
(2) above-mentioned steps 1 are completed) after, the standard fasteners being mounted within tooling is whole as in insulation barrel body,
And cooperate the cooperation of inner face 31 to be installed by flange platform 2 and flange platform, a whole set of tooling is passed through into sample after being installed
The aid end of locking upper fixture 1 is fixed on the upper grip of mechanics machine.
4) insulation is carried out to a whole set of tooling and liquid nitrogen is added in tooling to carry out testing preceding preparation, comprising:
(1) after completing step 3), in one layer of heat insulation foam of outer surface burden of insulation barrel body case 4, have a whole set of tooling
There is preferable heat insulation capacity, and the inner surface of layer 41 installs thermocouple in insulation barrel body, to the real-time temperature of test whole process
Degree is accurately measured and is controlled；
(2) after completing above-mentioned steps (1), liquid nitrogen is poured into insulation barrel body among layer 41, and in insulation barrel body case 4
Staving cover board 6 is kept the temperature on end cap, the usage amount of liquid nitrogen is determined according to specific test temperature, but need to guarantee that liquid nitrogen is not excessively tested
Standard fasteners；
(3) after completing above-mentioned steps (2), the real time temperature inside tooling is measured, when real time temperature reaches test
It is required that after 5-10 minutes temperature of heat preservation are stablized, can be tested when temperature value.
5) mechanical test is carried out to standard fasteners by low-temperature test tooling using mechanics machine, comprising:
It chooses suitable test parameters and starts to test, test stops testing machine after breaking, heat preservation staving cover board 6 is removed,
It unclamps testing machine upper grip and removes sample locking upper fixture 1, sample is taken out by tooling holding rod 5 and cooperates flange platform 2, to needs
The cryogenic mechanics performance parameter of the standard fasteners of test is recorded.
In order to carry out quickly caning be processed 2 with large batch of test to the mechanical property of standard fasteners at low ambient temperatures
The sample locking upper fixture 1 and sample for covering corresponding size cooperate flange platform 2, are greatly improved inspection by continual be used alternatingly
Degree of testing the speed and efficiency only need to change the standard fasteners of different type and size the locking upper fixture 1 and sample of corresponding size
Product cooperate flange platform 2.
The tooling of a kind of standard fasteners cryogenic mechanics performance test of the invention, when specifically used, according to tested standard
The upper fixture and flange platform of type and size the replacement corresponding size of fastener, a whole set of tooling should ensure that enough intensity
And rigidity.The tooling consumptive material of a whole set of standard fasteners cryogenic mechanics performance test is few, even if tooling a part goes wrong,
Only need to change the part.A whole set of tooling can be applied to various types of mechanics machines, and precision with higher.Into
When Mechanics Performance Testing under row standard fasteners low temperature environment, tooling is significantly simple by modularization and with this humane design
Change operating process, improves the safety of operation.The material suggestion of a whole set of tooling uses the stainless steel of not black brittleness
Material, and vacuum heat treatment is being carried out using the preceding various pieces to a whole set of tooling, make it have higher intensity and hardness.
Illustrate a specific embodiment of the invention above by specific example, those skilled in the art of the present technique can be by this theory
Content disclosed by bright book understands advantages of the present invention and effect easily.The present invention can also pass through in addition different specific realities
The mode of applying is implemented and applies, and the various details in this specification can also not had based on different applications and demand
Have and carries out various modifications and alterations under spirit of the invention.
Claims (9)
1. a kind of tooling of standard fasteners cryogenic mechanics performance test, it is characterised in that: the tooling includes pressing from both sides in sample locking
Have (1), sample cooperation flange platform (2), flange platform fixed lower fixture (3), insulation barrel body case (4), tooling holding rod (5) and protects
Warm staving cover board (6)；Sample locking upper fixture (1) is for fastening test block, sample cooperation flange platform (2) and flange
Platform fixed lower fixture (3) is fixed on the upper grip of mechanics machine by the aid end of sample locking upper fixture (1)；It is described
Insulation barrel body case (4) is by fixed lower fixture (3) aid of the flange platform on the lower collet of mechanics machine；The sample
Cooperation flange platform (2) is connected by the way of welding with the tooling holding rod (5), and the tooling holding rod (5) is for picking and placing
Test block；The heat preservation staving cover board (6) is provided on insulation barrel body case (4) upper end cover.
2. a kind of tooling of standard fasteners cryogenic mechanics performance test according to claim 1, it is characterised in that: described
Sample cooperates flange platform (2) to have flange platform lower end surface through-hole (23) and flange platform upper surface through-hole (21), for across test
Part.
3. a kind of tooling of standard fasteners cryogenic mechanics performance test according to claim 1, it is characterised in that: test
Part is pierced by the mode that part is connected through a screw thread and the standard fasteners screw-threaded coupling of sample locking upper fixture (1) (11)
It matches.
4. a kind of tooling of standard fasteners cryogenic mechanics performance test according to claim 1, it is characterised in that: described
Fixed lower fixture (3) of flange platform and the insulation barrel body case (4) are welded to connect.
5. a kind of tooling of standard fasteners cryogenic mechanics performance test according to claim 1, it is characterised in that: described
Flange platform fixed lower fixture (3) includes clamping stick (32) under flange platform cooperation inner face (31) and tooling, the flange platform cooperation
Inner face (31) is fixed on the upper grip of mechanics machine, the insulation barrel body case by sample locking upper fixture (1)
(4) by clamping stick (32) aid under the tooling on the lower collet of mechanics machine.
6. a kind of tooling of standard fasteners cryogenic mechanics performance test according to claim 2, it is characterised in that: in institute
The outer surface for stating flange platform lower end surface through-hole (23) covers one block of foil for having through-hole, the foil and the method
(22) are fixed on flange platform lower end surface by screw at the Anti-fall sheet metal screw-threaded coupling of the lower end surface Lan Tai.
7. a kind of tooling of standard fasteners cryogenic mechanics performance test according to claim 1, it is characterised in that: described
Insulation barrel body case (4) is provided with the double-layer structure of layer (41) and insulation barrel volume surrounding (42) in insulation barrel body.
8. a kind of tooling of standard fasteners cryogenic mechanics performance test according to claim 7, it is characterised in that: described
The inner surface of layer (41) installs thermocouple in insulation barrel body.
9. a kind of tooling of standard fasteners cryogenic mechanics performance test according to claim 1, it is characterised in that: described
The size of locking upper fixture (1) and sample cooperation flange platform (2) matches with the size of test block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910456347.XA CN110146373B (en) | 2019-05-29 | 2019-05-29 | Standard fastener low temperature mechanical properties test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910456347.XA CN110146373B (en) | 2019-05-29 | 2019-05-29 | Standard fastener low temperature mechanical properties test fixture |
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| Publication Number | Publication Date |
|---|---|
| CN110146373A true CN110146373A (en) | 2019-08-20 |
| CN110146373B CN110146373B (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910456347.XA Active CN110146373B (en) | 2019-05-29 | 2019-05-29 | Standard fastener low temperature mechanical properties test fixture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091850A (en) * | 2021-03-25 | 2021-07-09 | 北京航天试验技术研究所 | Capacitance liquid level meter based on liquid container |
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| CN101109679A (en) * | 2007-08-15 | 2008-01-23 | 北京航空航天大学 | Low temperature elasticity performance test device for compression spring |
| CN202182848U (en) * | 2011-07-29 | 2012-04-04 | 长城汽车股份有限公司 | Multifunctional packaged clamp for tests of threaded fasteners |
| CN203720018U (en) * | 2013-11-28 | 2014-07-16 | 中国科学院金属研究所 | Clamp for testing room temperature compression stress and strain curve of porous material |
| CN105222944A (en) * | 2015-09-18 | 2016-01-06 | 河南航天精工制造有限公司 | The test method of locking torque test and high-temperature test device |
| CN105784304A (en) * | 2016-05-05 | 2016-07-20 | 大连理工大学 | Multifunctional fastener testing machine |
| CN107796708A (en) * | 2017-11-29 | 2018-03-13 | 东北大学 | A kind of 196 DEG C of tensile test of metallic materials devices |
| CN109277453A (en) * | 2018-09-03 | 2019-01-29 | 浙江跃进机械有限公司 | It is a kind of for producing the punching tool and its surface treatment method of automobile connecting bar |
| KR20190021888A (en) * | 2017-08-24 | 2019-03-06 | 강릉원주대학교산학협력단 | Loading device of freeze testing apparatus for ground |
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2019
- 2019-05-29 CN CN201910456347.XA patent/CN110146373B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101109679A (en) * | 2007-08-15 | 2008-01-23 | 北京航空航天大学 | Low temperature elasticity performance test device for compression spring |
| CN202182848U (en) * | 2011-07-29 | 2012-04-04 | 长城汽车股份有限公司 | Multifunctional packaged clamp for tests of threaded fasteners |
| CN203720018U (en) * | 2013-11-28 | 2014-07-16 | 中国科学院金属研究所 | Clamp for testing room temperature compression stress and strain curve of porous material |
| CN105222944A (en) * | 2015-09-18 | 2016-01-06 | 河南航天精工制造有限公司 | The test method of locking torque test and high-temperature test device |
| CN105784304A (en) * | 2016-05-05 | 2016-07-20 | 大连理工大学 | Multifunctional fastener testing machine |
| KR20190021888A (en) * | 2017-08-24 | 2019-03-06 | 강릉원주대학교산학협력단 | Loading device of freeze testing apparatus for ground |
| CN107796708A (en) * | 2017-11-29 | 2018-03-13 | 东北大学 | A kind of 196 DEG C of tensile test of metallic materials devices |
| CN109277453A (en) * | 2018-09-03 | 2019-01-29 | 浙江跃进机械有限公司 | It is a kind of for producing the punching tool and its surface treatment method of automobile connecting bar |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091850A (en) * | 2021-03-25 | 2021-07-09 | 北京航天试验技术研究所 | Capacitance liquid level meter based on liquid container |
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| CN110146373B (en) | 2022-09-16 |
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