CN107607393A - A kind of sheet material center curvature test fixture and loading head - Google Patents
A kind of sheet material center curvature test fixture and loading head Download PDFInfo
- Publication number
- CN107607393A CN107607393A CN201710805145.2A CN201710805145A CN107607393A CN 107607393 A CN107607393 A CN 107607393A CN 201710805145 A CN201710805145 A CN 201710805145A CN 107607393 A CN107607393 A CN 107607393A
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- loading head
- bearing
- loading
- headstock
- cover plate
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- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000002474 experimental method Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910001018 Cast iron Inorganic materials 0.000 claims description 2
- 229910001315 Tool steel Inorganic materials 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of sheet material center curvature test fixture and loading head, its fixture includes cover plate and bearing, cover plate and bearing are square plate, its center is equipped with coaxial through hole, the bottom four corners of bearing are provided with cylindrical supporting leg, and bearing is fixed on universal testing machine by cylindrical supporting leg or usual pressure is tested on machine worktable；Loading head includes loading headstock and loading head, loading headstock is circular slab, its diameter is less than the diameter of through hole on cover plate and bearing, positioned at the middle upper portion of above-mentioned fixture, is uniformly located at the bolt hole at edge by 4 and fixture is coaxially mounted on universal testing machine moving beam；The top of loading head is threadedly coupled with loading headstock.Test result of the present invention accurately and reliably, can be arranged on universal testing machine or usual pressure testing machine, and dismount simple and convenient.
Description
Technical field
The present invention relates to a kind of experimental rig, particularly a kind of experimental rig for sheet coupon center curvature.
Background technology
Plate-type component is often subject to point-like load action at work, and at this moment plate produces center curvature deformation, therefore understands
Plate mechanical property under center curvature effect is significant to engineering design and application.Center curvature experiment is to be used to measure
A kind of test method of sheet material center curvature performance, can be with the amount of deflection of sheet material measurement and bending strength performance.Universal testing machine
It is one of tester for carrying out the stretchings of various material samples, compression, bending and shearing test, is widely used in colleges and universities, scientific research
The various departments such as unit, quality testing department.Prior art does not exclusively carry out the testing machine of center curvature experiment, and lacks a kind of peace
The test fixture of sheet material measurement center curvature performance on universal testing machine or ordinary press.
02 month Publication No. CN102944470A on the 27th in 2013 patent of invention discloses a kind of " crooked experiment fixture group
Part, crooked experiment fixture and compression experiment fixture ", the carbon fibre composite battenboard that the patent can be directed to sizes enter
Row compression and crooked experiment, and the fixture corresponding annex that changes the outfit can be bent and compression experiment.On January 20th, 2016 public affairs
The number of opening is that CN204988904U utility model patent discloses " a kind of device of sheet material bending property test ", and the patent can have
Effect test sandwich sheet bending resistance, process is simple, and fixture spacing and stress surface are controlled by rotating supporting surface.
The grip device mentioned in document above can not carry out the center curvature test of sheet material.
The content of the invention
In order to carry out sheet material center curvature performance test in a prior art situation, the present invention proposes that a kind of test result is accurate
It is really reliable, dismounting is simple, universal testing machine can be arranged on or the sheet material center curvature test fixture on usual pressure testing machine and
Loading head.
The fixture of the present invention includes cover plate and bearing, and cover plate and bearing are square plate, and its center is equipped with coaxial
Through hole, the cover plate and bearing of the through hole periphery are provided with uniform bolt hole, and the bottom four corners of bearing square plate are provided with cylinder
Supporting leg, bearing is fixed on universal testing machine by cylindrical supporting leg or usual pressure is tested on machine worktable, and each supporting leg is divided into
There is positioning hole, steady pin is provided with positioning hole, ensure bearing being positioned at universal testing machine table core position, prevent bearing
Movement；
Loading head includes loading headstock and loading head, and loading headstock is circular slab, and its diameter is less than on cover plate and bearing and led to
The diameter in hole, positioned at the middle upper portion of above-mentioned fixture, uniformly it is located at the bolt hole at edge by 4 and fixture is coaxially mounted to ten thousand
On energy testing machine moving beam；Load headstock center and internal thread screw is set, loading head top is threadedly coupled with loading headstock；
During test, test specimen is positioned between cover plate and bearing, and locked by bolt, forms fixed boundary；In loading head and sample
Heart position contacts pretension, with after-applied load.
Sheet material is different by load form in Practical Project, the loading head of 4 kinds of shapes can be used in experiment, respectively
It is：Square column type loading head, cylindrical loading head, goalpost shape loading head and conical loading head.
The cover plate, bearing, loading headstock and loading head can use low-alloy tool steel, carbon structural steels or cast iron etc.
Material.
The present invention has the following advantages that compared with prior art：
1st, fixture and loading head are mountable on universal testing machine or usual pressure testing machine, can be allowed in testing machine
The center curvature experiment of sheet material is carried out in the range of load, as a result accurately and reliably.
2nd, by changing the length of pretension screw between cover plate and bearing, the sample of multi-thickness can be tested.
3rd, fixture and loading head installation and disassembling section it is simple.
4th, after each sample testing terminates, cover plate need to only be removed, sample to be measured is reapposed in cover plate and bearing
Between lock, it is so convenient and swift, can significantly improve center curvature test efficiency.
Brief description of the drawings
Fig. 1 is the schematic perspective view of the present invention.
Fig. 2 is the schematic diagram of loading head of the present invention.
In figure：1. the bearing supporting leg 7. of 5. sample clamping screw of the bearing 3. of cover plate 2. loading 4. loading head of headstock 6. tries
Sample 8. loads headstock installation bolt hole 9. and loads the loading steady pin of head screw 11. of headstock internal thread screw 10.
Embodiment
In the sheet material center curvature test fixture and loading head schematic diagram shown in Fig. 1, fixture includes cover plate 1 and bearing 2,
Cover plate and bearing are square plate, material selection Cr06 low-alloy tool steels, and the length of side of cover plate and bearing is 600mm, thickness
For 30mm, its center is equipped with coaxial through hole, a diameter of 400mm of through hole, and the cover plate and bearing of the through hole periphery are provided with
The bolt hole of 12 uniform a diameter of 18mm, the bottom four corners of bearing square plate are equipped with a diameter of 40mm, are highly 120mm
Cylindrical supporting leg 6, bearing is fixed on universal testing machine or usual pressure by cylindrical supporting leg and tests on machine worktable, each
Supporting leg has positioning hole, is provided with steady pin 11 in positioning hole, ensures bearing being positioned at universal testing machine table core position
Put, prevent the movement of bearing；
Loading head includes loading headstock 3 and loading head 4, and it is Cr06 low-alloy instruments to load headstock and the equal selection of loading head
Steel, loading headstock are circular slab, its diameter a diameter of 250mm, thickness 20mm, positioned at the middle upper portion of above-mentioned fixture, along side
Edge is uniformly arranged 4 a diameter of 18mm bolt hole 8, and it is horizontal to be coaxially mounted to universal testing machine movement by the bolt hole and fixture
Liang Shang；Load the internal thread screw 9 that headstock center is provided with a diameter of 16mm, loading head 4 is diameter 100mm, height 200mm cylinder
Shape, its top are provided with a diameter of 16mm, long 15mm screw 10, and loading head top is threadedly coupled with loading headstock.
Sheet material is different by load form in Practical Project, as shown in Fig. 2 in experiment using 4 kinds of shapes plus
Carrier head, it is respectively：Square column type loading head, cylindrical loading head, goalpost shape loading head and conical loading head.
Before sheet material center curvature experiment is carried out, bearing 2 is fixed on universal testing machine table core position, by solid
Rationed marketing 11 is positioned and prevents it to be moved.Will loading headstock 3 by bolt through loading head headstock installation bolt hole 8 with
Universal testing machine moving beam is connected.It is fastenedly connected by loading head screw 10 with loading headstock screw 9.Sample 7 is placed
Between cover plate 1 and bearing 2, fixed boundary is formed by the locking of sample clamping screw 5.Loading head contacts with sample center
Pretension, with after-applied load.
Claims (3)
1. a kind of sheet material center curvature test fixture and loading head, it is characterised in that：The fixture includes cover plate and bearing, cover plate
It is square plate with bearing, its center is equipped with coaxial through hole, and the cover plate and bearing of the through hole periphery are provided with uniformly
Bolt hole, the bottom four corners of bearing square plate are provided with cylindrical supporting leg, and bearing is fixed on universal testing machine by cylindrical supporting leg
Or on usual pressure experiment machine worktable, each supporting leg has positioning hole, is provided with steady pin in positioning hole, ensures to determine bearing
Positioned at universal testing machine table core position, the movement of bearing is prevented；
The loading head includes loading headstock and loading head, and loading headstock is circular slab, and its diameter is less than on cover plate and bearing and led to
The diameter in hole, positioned at the middle upper portion of above-mentioned fixture, it is coaxially mounted to by being uniformly located at the bolt hole at edge with fixture omnipotent
On testing machine moving beam；Load headstock center and internal thread screw is set, loading head top is threadedly coupled with loading headstock.
2. sheet material center curvature test fixture according to claim 1 and loading head, it is characterised in that：In Practical Project
Sheet material is different by load form, and the loading head is：Square column type loading head, cylindrical loading head, goalpost shape loading head
With conical loading head.
3. sheet material center curvature test fixture according to claim 1 and loading head, it is characterised in that：The cover plate, branch
Seat, loading headstock and loading head use low-alloy tool steel, carbon structural steels or cast iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710805145.2A CN107607393A (en) | 2017-09-08 | 2017-09-08 | A kind of sheet material center curvature test fixture and loading head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710805145.2A CN107607393A (en) | 2017-09-08 | 2017-09-08 | A kind of sheet material center curvature test fixture and loading head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107607393A true CN107607393A (en) | 2018-01-19 |
Family
ID=61062785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710805145.2A Pending CN107607393A (en) | 2017-09-08 | 2017-09-08 | A kind of sheet material center curvature test fixture and loading head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107607393A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108577A (en) * | 2019-05-28 | 2019-08-09 | 中国航空发动机研究院 | Thin-wall construction axial bending loading device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519807A (en) * | 2011-12-30 | 2012-06-27 | 济南试金集团有限公司 | Plate bending test device |
| CN204613042U (en) * | 2015-04-18 | 2015-09-02 | 中煤张家口煤矿机械有限责任公司 | Scraper plate bending test combined measuring device |
| CN106896023A (en) * | 2017-03-22 | 2017-06-27 | 哈尔滨工程大学 | Composite panel structure side pressure test fixture peculiar to vessel |
| CN207163816U (en) * | 2017-09-08 | 2018-03-30 | 燕山大学 | A kind of sheet material center curvature test fixture and loading head |
-
2017
- 2017-09-08 CN CN201710805145.2A patent/CN107607393A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519807A (en) * | 2011-12-30 | 2012-06-27 | 济南试金集团有限公司 | Plate bending test device |
| CN204613042U (en) * | 2015-04-18 | 2015-09-02 | 中煤张家口煤矿机械有限责任公司 | Scraper plate bending test combined measuring device |
| CN106896023A (en) * | 2017-03-22 | 2017-06-27 | 哈尔滨工程大学 | Composite panel structure side pressure test fixture peculiar to vessel |
| CN207163816U (en) * | 2017-09-08 | 2018-03-30 | 燕山大学 | A kind of sheet material center curvature test fixture and loading head |
Non-Patent Citations (1)
| Title |
|---|
| 辛亚军 等: "蜂窝铝夹芯板准静态局压试验研究", 机械强度, vol. 39, no. 3, pages 518 - 526 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108577A (en) * | 2019-05-28 | 2019-08-09 | 中国航空发动机研究院 | Thin-wall construction axial bending loading device |
| CN110108577B (en) * | 2019-05-28 | 2021-11-19 | 中国航空发动机研究院 | Axial bending loading device for thin-wall structure |
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