CN106769427A - A kind of hydraulic chuck of electo hydraulic servocontrolled fatigue testing machine - Google Patents
A kind of hydraulic chuck of electo hydraulic servocontrolled fatigue testing machine Download PDFInfo
- Publication number
- CN106769427A CN106769427A CN201611228136.3A CN201611228136A CN106769427A CN 106769427 A CN106769427 A CN 106769427A CN 201611228136 A CN201611228136 A CN 201611228136A CN 106769427 A CN106769427 A CN 106769427A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- testing machine
- electo
- fatigue testing
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0411—Chucks, fixtures, jaws, holders or anvils using pneumatic or hydraulic pressure
Abstract
The invention discloses a kind of hydraulic chuck of electo hydraulic servocontrolled fatigue testing machine, the hydraulic chuck of electo hydraulic servocontrolled fatigue testing machine includes hydraulic cylinder（1）, piston（2）, dop body（3）, V-block（4）Two, gland（5）, hexagon socket cap head screw M8（6）Four.The present invention uses hydraulic cylinder（1）Step up test specimen, increase clamping force, the appearance that test specimen slides situation is effectively reduced, especially under the operating mode of high frequency.Gland passes through 4 hexagon socket cap head screw M8（6）Make piston（2）With V-block（4）It is encapsulated in dop body（3）It is interior, the stability of fixture can be improved.This fixture structure is simple, and practicality is good, is easy to promote.
Description
Technical field
The present invention relates to a kind of hydraulic chuck of electo hydraulic servocontrolled fatigue testing machine, belong to mechanics of materials fatigue tester neck
Domain, it is adaptable to cylindrical specimen stretching, compression, crack expansion test on fatigue tester.
Background technology
Machine components easily fail, and under sufficiently large alternate stress effect, are carved in the mutation of hardware profile or surface
The position such as trace or internal flaw, all may trigger microfissure because of larger stress concentration.Scattered microfissure is by assembling
Communication will form macroscopic cracking.Established macroscopic cracking rallentando extends, and member cross-sections progressively weaken, when reaching one
When fixed limit is spent, component can be broken suddenly.The above-mentioned failure phenomenon that because of metal alternate stress causes, the referred to as fatigue of metal.Static load
The lower good material of plastic property, when alternate stress is born, is not often substantially plastically deformed in stress less than yield limit
In the case of, fracture suddenly.Fatigue fracture is significantly divided into two regions：Relatively smooth Crack Extension area and more coarse
Fracture zone.After crackle is formed, when alternate stress makes the both sides of crackle and the when of opening and close, mutually extruding grind repeatedly, it is smooth
What area was just formed by.The change of the interruption and size of load, many Crack frontal lines are left in smooth areas.As for coarse
Fracture zone, then finally break to form suddenly.Statistics shows, the failure of machine components, and there are about 70% or so is that fatigue is drawn
Rise, and most of the accident for causing is catastrophic.So, it is have by the antifatigue performance of experimental study metal material
Practical significance.
Fatigue tester, is a kind of stretching for being mainly used in measure metal and its alloy material under room temperature state, compression
Or draw, press the machine of the experiment on fatigue properties of stress alternation.In the axial fatigue performance test for metal material, use at present
Equipment be mostly electro-hydraulic servo fatigue experimental machine.Fixture when usual fatigue experimental machine has Wedge gripping, horizontal sliding fixture and cylinder,
Have the disadvantage insufficient clamping force, in fact it could happen that test specimen sliding phenomenon, cause test failure.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the invention provides a kind of hydraulic clip of electo hydraulic servocontrolled fatigue testing machine
Head, the hydraulic chuck simple structure of the electo hydraulic servocontrolled fatigue testing machine is easy to use, is easy to promote.
The present invention realizes that its goal of the invention is adopted the technical scheme that：A kind of hydraulic clip of electo hydraulic servocontrolled fatigue testing machine
Head, including hydraulic cylinder, piston, dop, V-block, gland, hexagon socket cap head screw M8, the hydraulic cylinder body end are circle
Column construction, is axially arranged with hole slot, there is two through holes on its circumference, and convenient insertion bearing pin is connected thereto, and has spring in hydraulic cylinder,
Upspring automatically during oil return, the piston rod leading portion of hydraulic cylinder has screw thread, coordinated with piston.
Further, leading portion has screwed hole on piston, coordinates with piston rod, and there is annular groove in stage casing, and latter end is tied for cylinder
Structure.
Further, the V-block is provided with through hole, and two parts are divided into from centre.
Further, dop body has shoulder hole, two cylindrical holes, a conical bore.
Further, four through holes are distributed on gland, hexagon socket cap head screw M8（6）Outside diameter is straight more than through hole
Footpath.
The beneficial effects of the invention are as follows：Use hydraulic cylinder（1）Step up test specimen, increase clamping force, effectively reduce test specimen
The appearance of sliding situation, especially under the operating mode of high frequency.Gland passes through 4 hexagon socket cap head screw M8（6）Make piston（2）
With V-block（4）It is encapsulated in dop body（3）It is interior, the stability of fixture can be improved.This fixture structure is simple, and practicality is good, is easy to
Promote.
Brief description of the drawings
Fig. 1 is structure sectional view of the invention；
Fig. 2 is structure upward view of the invention；
Fig. 3 is structure top view of the invention；
Fig. 4 is that structure of the invention clamps test specimen schematic diagram.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment
As Fig. 1-4 shows that a kind of specific embodiment of the invention is a kind of hydraulic pressure of electo hydraulic servocontrolled fatigue testing machine
Chuck, including hydraulic cylinder 1, piston 2, dop body 3, V-block 4, gland 5, hexagon socket cap head screw M8 6.During oil-feed, hydraulic pressure
Cylinder 1 promotes piston 2 to move, and piston 2 promotes V-block 4 to clamp test specimen.4 points of V-block is two pieces, can effectively clamp test specimen.Hydraulic cylinder
1 is connected by the screw thread on piston rod with piston 2, and hydraulic cylinder body end is provided with hole slot, can be fixed on it with bearing pin electro-hydraulic
On servo fatigue testing machine.There is spring in hydraulic cylinder, upspring automatically during oil return.Gland 5 passes through 4 hexagon socket cap head screw M8
6 make piston 2 be encapsulated in dop body 3 with V-block 4.
Leading portion has screwed hole on piston 2, coordinates with piston rod, and there is annular groove in stage casing, and latter end is cylindrical structural.
There are shoulder hole, two cylindrical holes, for placing piston 2, a conical bore, for placing V-block 4 in dop body 3.
Four through holes are distributed on gland 5, and the outside diameters of hexagon socket cap head screw M8 6 are more than through-hole diameter.
The application overall structure is simple and reliable, designs ingenious, is conducive to promoting the use of.
Those skilled in the technology concerned should be clear and definite, and embodiment described above is used as illustrating of the invention, and simultaneously
It is non-as limitation of the invention, if in essential scope of the invention, change, the modification done to above-described embodiment all will
Fall in scope of the presently claimed invention.
Claims (5)
1. a kind of hydraulic chuck of electo hydraulic servocontrolled fatigue testing machine, including hydraulic cylinder（1）, piston（2）, dop body（3）, V-block
（4）, gland（5）, hexagon socket cap head screw M8（6）, it is characterised in that：The hydraulic cylinder（1）Tied for cylinder cylinder body end
Structure, is axially arranged with hole slot, there is two through holes on its circumference, and convenient insertion bearing pin is connected thereto, hydraulic cylinder（1）Inside there is spring, return
Upspring automatically when oily, hydraulic cylinder（1）Piston rod leading portion have screw thread, with piston（2）Coordinate.
2. the hydraulic chuck of a kind of electo hydraulic servocontrolled fatigue testing machine according to claim 1, it is characterised in that：Piston（2）
Upper leading portion has screwed hole, coordinates with piston rod, and there is annular groove in stage casing, and latter end is cylindrical structural.
3. the hydraulic chuck of a kind of electo hydraulic servocontrolled fatigue testing machine according to claim 1, it is characterised in that：The V-type
Block（4）Through hole is provided with, two parts are divided into from centre.
4. the hydraulic chuck of a kind of electo hydraulic servocontrolled fatigue testing machine according to claim 1, it is characterised in that：Dop body
（3）With having shoulder hole, two cylindrical holes, a conical bore.
5. the hydraulic chuck of a kind of electo hydraulic servocontrolled fatigue testing machine according to claim 1, it is characterised in that：Four through holes
It is distributed on gland, hexagon socket cap head screw M8（6）Outside diameter is more than through-hole diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611228136.3A CN106769427A (en) | 2016-12-27 | 2016-12-27 | A kind of hydraulic chuck of electo hydraulic servocontrolled fatigue testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611228136.3A CN106769427A (en) | 2016-12-27 | 2016-12-27 | A kind of hydraulic chuck of electo hydraulic servocontrolled fatigue testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106769427A true CN106769427A (en) | 2017-05-31 |
Family
ID=58921847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611228136.3A Pending CN106769427A (en) | 2016-12-27 | 2016-12-27 | A kind of hydraulic chuck of electo hydraulic servocontrolled fatigue testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106769427A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248445A (en) * | 2017-07-21 | 2017-10-13 | 成都菲斯普科技有限公司 | A kind of power transformer |
| CN108627390A (en) * | 2018-03-23 | 2018-10-09 | 武汉理工大学 | A kind of multifunctional adjustable pressure fatigue machine connector device |
| CN114324032A (en) * | 2021-12-20 | 2022-04-12 | 中机试验装备股份有限公司 | Be used for high temperature low cycle fatigue test anchor clamps |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3335603A (en) * | 1965-03-17 | 1967-08-15 | Mts System Corp | Grips for testing machine |
| WO1983003003A1 (en) * | 1982-02-18 | 1983-09-01 | Mts System Corp | Side loading specimen grips |
| EP0257104A1 (en) * | 1986-07-12 | 1988-03-02 | Carl Schenck Ag | Hydraulically operated wedge clamp for material testing devices |
| CN201034882Y (en) * | 2007-04-27 | 2008-03-12 | 济南新三思动态试验技术有限公司 | Hydraulic force clamping head |
| CN201373824Y (en) * | 2009-03-10 | 2009-12-30 | 中国石油天然气集团公司 | Compact tension specimen fixture for fracture fatigue test |
| CN202853973U (en) * | 2012-08-07 | 2013-04-03 | 长春新试验机有限责任公司 | Electro-hydraulic prestress wedge-shaped clamping device |
| JP2013152093A (en) * | 2012-01-24 | 2013-08-08 | Shimadzu Corp | Material testing machine |
| CN204101374U (en) * | 2014-09-29 | 2015-01-14 | 北京理工大学 | Non-proportional loading performance test fixture |
| CN205426656U (en) * | 2016-03-14 | 2016-08-03 | 青岛科技大学 | Dual -purpose automatic clamp of high frequency fatigue testing machine |
| CN206540769U (en) * | 2016-12-27 | 2017-10-03 | 浙江理工大学 | A kind of hydraulic chuck of electo hydraulic servocontrolled fatigue testing machine |
-
2016
- 2016-12-27 CN CN201611228136.3A patent/CN106769427A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3335603A (en) * | 1965-03-17 | 1967-08-15 | Mts System Corp | Grips for testing machine |
| WO1983003003A1 (en) * | 1982-02-18 | 1983-09-01 | Mts System Corp | Side loading specimen grips |
| EP0257104A1 (en) * | 1986-07-12 | 1988-03-02 | Carl Schenck Ag | Hydraulically operated wedge clamp for material testing devices |
| CN201034882Y (en) * | 2007-04-27 | 2008-03-12 | 济南新三思动态试验技术有限公司 | Hydraulic force clamping head |
| CN201373824Y (en) * | 2009-03-10 | 2009-12-30 | 中国石油天然气集团公司 | Compact tension specimen fixture for fracture fatigue test |
| JP2013152093A (en) * | 2012-01-24 | 2013-08-08 | Shimadzu Corp | Material testing machine |
| CN202853973U (en) * | 2012-08-07 | 2013-04-03 | 长春新试验机有限责任公司 | Electro-hydraulic prestress wedge-shaped clamping device |
| CN204101374U (en) * | 2014-09-29 | 2015-01-14 | 北京理工大学 | Non-proportional loading performance test fixture |
| CN205426656U (en) * | 2016-03-14 | 2016-08-03 | 青岛科技大学 | Dual -purpose automatic clamp of high frequency fatigue testing machine |
| CN206540769U (en) * | 2016-12-27 | 2017-10-03 | 浙江理工大学 | A kind of hydraulic chuck of electo hydraulic servocontrolled fatigue testing machine |
Non-Patent Citations (1)
| Title |
|---|
| 许贤良 等: "液压缸及其设计", vol. 1, 国防工业出版社, pages: 30 - 32 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248445A (en) * | 2017-07-21 | 2017-10-13 | 成都菲斯普科技有限公司 | A kind of power transformer |
| CN108627390A (en) * | 2018-03-23 | 2018-10-09 | 武汉理工大学 | A kind of multifunctional adjustable pressure fatigue machine connector device |
| CN114324032A (en) * | 2021-12-20 | 2022-04-12 | 中机试验装备股份有限公司 | Be used for high temperature low cycle fatigue test anchor clamps |
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