CN107132130A - A kind of 3 points, four-point bending test machine adjusts fixture with centering - Google Patents
A kind of 3 points, four-point bending test machine adjusts fixture with centering Download PDFInfo
- Publication number
- CN107132130A CN107132130A CN201710447162.3A CN201710447162A CN107132130A CN 107132130 A CN107132130 A CN 107132130A CN 201710447162 A CN201710447162 A CN 201710447162A CN 107132130 A CN107132130 A CN 107132130A
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- China
- Prior art keywords
- arm
- support arm
- pedestal
- registration
- prelocalization
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- 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
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
-
- 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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
-
- 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
- G01N2203/0405—Features allowing alignment between specimen and chucks
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- Physics & Mathematics (AREA)
- 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, four-point bending test machine fixture is adjusted with centering at a kind of 3 points, including bottom plate, pedestal is fixed with bottom plate, it is characterized in that, middle at the top of pedestal is provided with to further groove, the slide rail set in left-right direction is provided with the top of pedestal, left support arm and right support arm are slidably connected on slide rail, the first fastening bolt is equipped with the bottom of left support arm and right support arm, provided with the lead set along the longitudinal direction on pedestal, the front-end and back-end of the lead are stretched out on the outside of pedestal；Left and right centering body is equipped with slide rail, front and rear centering body is equipped with lead；The present invention is used cooperatively by left and right centering body and front and rear centering body, fore-and-aft direction and the specified high-precision centering adjustment of left and right directions are realized to the band sample to be detected being placed on left support arm and right support arm, is a kind of compact conformation, accuracy of alignment high 3 points, four-point bending test machine centering adjustment fixture.
Description
Technical field
The invention belongs to bend test device technical field, more particularly to a kind of 3 points, four-point bending test machine use pair
Middle adjustment fixture.
Background technology
Three point bending test is to examine the material bending power such as the LCD Panel of metal, ceramics, glass and each electric appliances
The experimental method of performance and fracture toughness is learned, sample typically has specific specification requirement, and three contact points of sample form equal
Two torque when occur three-point bending, sample will be broken in midpoint.Four-point bending is similar with three-point bending, equally
It is a kind of test method for measuring material bending performance.Bar-shaped sample is lain against in bend test fixture, simply supported beam shape is formed
Formula, supporting the distance between two lower strong points of sample to regard, specimen length is adjustable, and there are two symmetrical load(ing) points sample top.
3 points in current material property detection, four-point bending test fixture typically only serve the effect of support, it is to be tested
Sample is to be simply placed above fixture to test its bending property with Material Testing Machine, tends not to ensure sample in fixture
Between position, less can guarantee that between sample placement location and pressure head of testing machine perpendicularity requirement and sample and fixture the depth of parallelism
It is required that, so the accuracy and authenticity of test data need to be suspected, and especially in Aero-Space, precision instrument, electronic product etc.
The material property context of detection of high-tech sector, traditional bending property testing device far from meet measuring accuracy will
Ask, but currently there are no the centering adjustment fixture for, four-point bending test at 3 points, so, a kind of 3 points, four-point bending
The research and development that experiment adjusts clamp mechanism with centering are imperative.
The content of the invention
Fixture is adjusted with centering at a kind of 3 points, realize to be measured it is an object of the invention to provide, four-point bending test machine
The centering adjustment of sample, improves the required precision of the strong point centering of sample to be tested.
The present invention is reaches that above-mentioned purpose is adopted the technical scheme that：
A kind of 3 points, four-point bending test machine adjusts fixture, including bottom plate with centering, pedestal is fixed with bottom plate, in pedestal
The middle at top is provided with to further groove, and the slide rail set in left-right direction is provided with the top of pedestal, the company of slip on slide rail
Left support arm and right support arm are connected to, the first fastening bolt is equipped with the bottom of left support arm and right support arm, on pedestal
Provided with the lead set along the longitudinal direction, the front-end and back-end of the lead are stretched out on the outside of pedestal；Assembled on slide rail
There is left and right centering body, front and rear centering body is equipped with lead.
It is preferred that, the left and right centering body includes the left registration arm and right registration arm that bottom is slidably connected with slide rail,
The second fastening bolt is equipped with the bottom of left registration arm and right registration arm, left positioning is integrally formed with the top of left registration arm
Pawl, right locating detent is integrally formed with the top of right registration arm, and the left registration arm is located at the left side of left support arm, right registration arm position
In the right side of right support arm, and left support arm and right support arm are on symmetrical to further groove, left registration arm and right registration arm on
It is symmetrical to further groove；Left registration arm, left support arm, right support arm and right registration arm are sequentially passed through provided with left and right adjusting spiral shell along left and right
Bar, the left and right adjusting screw rod is slidably connected with left support arm, right support arm, left and right adjusting screw rod and left registration arm, right branch
Brace is threadedly coupled, and left registration arm is opposite with the screw thread of right registration arm.
It is preferred that, the front and rear centering body includes prelocalization arm and the rear positioning that bottom is slidably connected with lead
Arm, the second fastening bolt is equipped with the bottom of prelocalization arm and rear radius arm, fixed before being integrally formed with the top of prelocalization arm
Position pawl, locating detent after being integrally formed with the top of rear radius arm, prelocalization arm and rear radius arm are located in front of pedestal with after respectively
Side, along front and rear prelocalization arm and the rear radius arm of sequentially passing through provided with front and rear adjusting screw rod, the front and rear adjusting screw rod and prelocalization
Arm, rear radius arm are threadedly coupled, and the screw thread of prelocalization arm and rear radius arm is opposite.
It is preferred that, the support roller groove set along the longitudinal direction is equipped with the top of left support arm and right support arm, in branch
Backing roll is placed with support roller groove, the backing roll uses isolation material, and sample to be tested, the support roller are placed on backing roll
Well width is 1.1~1.3 times of supporting roller diameter, and support roller groove depth is more than backing roll radius and less than support roller diameter.
It is preferred that, the prelocalization pawl and rear locating detent include two points of locating detents side by side.
The advantageous effect of present invention is that：The present invention is made by the cooperation of left and right centering body and front and rear centering body
With realizing fore-and-aft direction and the specified height of left and right directions to the band sample to be detected being placed on left support arm and right support arm
The centering adjustment of precision, is a kind of compact conformation, accuracy of alignment high 3 points, four-point bending test machine centering adjustment fixture.
Brief description of the drawings
Fig. 1 removes structural representation during front and rear centering body for the present invention；
Fig. 2 removes the structural representation during centering body of left and right for the present invention；
Fig. 3 is the left view of prelocalization arm in Fig. 2.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, a kind of 3 points, four-point bending test machine centering adjustment fixture, including bottom plate 16, the bottom of at
Pedestal 1 is fixed with plate 16, is provided with to further groove 17, is provided with the top of pedestal 1 along right and left in the middle at the top of pedestal 1
To the slide rail 2 of setting, left support arm 6 and right support arm 11 are slidably connected on slide rail 2, in left support arm 6 and right support arm
11 bottom is equipped with the first fastening bolt 3,14, described to be oriented to provided with the lead 18 set along the longitudinal direction on pedestal 1
The outside of pedestal 1 is stretched out in the front-end and back-end of post 18；Left and right centering body is equipped with slide rail 2, is assembled on lead 18
There is front and rear centering body.
As shown in figure 1, the left registration arm 4 and the right side that the left and right centering body is slidably connected including bottom with slide rail 2 are fixed
Position arm 13, the second fastening bolt 3,14 is equipped with the bottom of left registration arm 4 and right registration arm 13 to the fixed left He of registration arm 4
Right registration arm 13, left locating detent 7 is integrally formed with the top of left registration arm 4, and it is right fixed to be integrally formed with the top of right registration arm 13
Position pawl 10, the left registration arm 4 is located at the left side of left support arm 6, and right registration arm 13 is located at the right side of right support arm 11, and left branch
Brace 6 and right support arm 11 are on to further groove 17, symmetrically, left registration arm 4 and right registration arm 13 are on symmetrical to further groove 17；
Left registration arm 4, left support arm 6, right support arm 11 and right registration arm 13 are sequentially passed through provided with left and right adjusting screw rod 15, institute along left and right
State left and right adjusting screw rod 15 to be slidably connected with left support arm 6, right support arm 11, left and right adjusting screw rod 15 and left registration arm 4, the right side
Support arm 13 is threadedly coupled, and left side in the i.e. left and right adjusting screw rod 15 opposite with the screw thread of right registration arm 13 of left registration arm 4
Divide the screw thread with right half part also on the contrary, so as to which when rotating left and right adjusting screw rod 15, left registration arm 4 is synchronous with right registration arm 13
Drawn close to centre or synchronous two ends to the left and right are separated.
As shown in Fig. 2 for the present invention remove left and right centering body when, in Fig. 1 along A-A to structural representation, it is described
Front and rear centering body includes the prelocalization arm 19 and rear radius arm 23 that bottom is slidably connected with lead 18, in prelocalization arm 19
The second fastening bolt is equipped with the bottom of rear radius arm 23（Not shown in figure）；Before being integrally formed with the top of prelocalization arm 19
Locating detent 21, locating detent 22 after being integrally formed with the top of rear radius arm 23, prelocalization arm 19 and rear radius arm 23 are located at respectively
The front and back of pedestal 1, front and rear adjusting screw rod 20 is provided with along front and rear prelocalization arm 19 and the rear radius arm 23 of sequentially passing through, it is described before
Adjusting screw rod 20 is threadedly coupled with prelocalization arm 19, rear radius arm 23 afterwards, and the screw thread of prelocalization arm 19 and rear radius arm 23
On the contrary, the screw thread of first half and latter half is also on the contrary, so as to the adjusting screw rod before and after rotation on i.e. front and rear adjusting screw rod 20
When 20, prelocalization arm 19, rear radius arm 23 are synchronously drawn close to centre or synchronous two ends forwards, backwards are separated.
As shown in figure 3, due to band sample place when, described further prelocalization pawl 21 He longer along left and right directions
Locating detent 22 is gone back simultaneously including two points of locating detents 26 side by side to increase stationarity when being positioned to band sample to be measured afterwards
Provided with for assembling the screwed hole 25 of front and rear adjusting screw rod 20 and through hole 24 for assembling lead 18.
Further, the support roller groove set along the longitudinal direction is equipped with the top of left support arm 6 and right support arm 11,
Backing roll 8 is placed with support roller groove, the backing roll 8 uses isolation material, and band sample 9 to be measured is placed on backing roll 8,
The support roller well width is 1.1~1.3 times of the diameter of backing roll 8, and support roller groove depth is more than the radius of backing roll 8 and less than branch
Support the diameter of roller 8.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic,
But these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (5)
1. a kind of 3 points, four-point bending test machine centering adjustment fixture, including bottom plate, are fixed with pedestal, it is special on bottom plate
Levy and be, the middle at the top of pedestal is provided with to further groove, and the slide rail set in left-right direction is provided with the top of pedestal,
Left support arm and right support arm are slidably connected on slide rail, the first fastening spiral shell is equipped with the bottom of left support arm and right support arm
Bolt, provided with the lead set along the longitudinal direction on pedestal, the front-end and back-end of the lead are stretched out on the outside of pedestal；
Left and right centering body is equipped with slide rail, front and rear centering body is equipped with lead.
2. 3 points according to claim 1, four-point bending test machine centering adjustment fixture, it is characterised in that the left side
Right centering body includes the bottom left registration arm and right registration arm that are slidably connected with slide rail, in left registration arm and right registration arm
Bottom is equipped with the second fastening bolt, and left locating detent is integrally formed with the top of left registration arm, in the top one of right registration arm
Provided with right locating detent, the left registration arm is located at the left side of left support arm, and right registration arm is located at the right side of right support arm, and left branch
Brace and right support arm are on symmetrical to further groove, and left registration arm and right registration arm are on symmetrical to further groove；Along left and right successively
Left and right adjusting screw rod, the left and right adjusting screw rod and a left side are provided with through left registration arm, left support arm, right support arm and right registration arm
Support arm, right support arm are slidably connected, and left and right adjusting screw rod is threadedly coupled with left registration arm, right support arm, and left positioning
Arm is opposite with the screw thread of right registration arm.
3. 3 points according to claim 1 or 2, four-point bending test machine centering adjustment fixture, it is characterised in that described
Front and rear centering body includes the prelocalization arm and rear radius arm that bottom is slidably connected with lead, in prelocalization arm and rear positioning
The bottom of arm is equipped with the second fastening bolt, and prelocalization pawl is integrally formed with the top of prelocalization arm, on the top of rear radius arm
Be integrally formed with rear locating detent, prelocalization arm and rear radius arm are located at pedestal front and back respectively, along front and rear sequentially pass through before it is fixed
Position arm and rear radius arm are provided with front and rear adjusting screw rod, and the front and rear adjusting screw rod is threadedly coupled with prelocalization arm, rear radius arm,
And the screw thread of prelocalization arm and rear radius arm is opposite.
4. 3 points according to claim 3, four-point bending test machine centering adjustment fixture, it is characterised in that in left branch
The support roller groove set along the longitudinal direction is equipped with the top of brace and right support arm, backing roll is placed with support roller groove,
The backing roll uses isolation material, and sample to be tested is placed on backing roll, and the support roller well width is supporting roller diameter
1.1~1.3 times, support roller groove depth is more than backing roll radius and less than support roller diameter.
5. 3 points according to claim 3, four-point bending test machine centering adjustment fixture, it is characterised in that before described
Locating detent and rear locating detent include two points of locating detents side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710447162.3A CN107132130A (en) | 2017-06-14 | 2017-06-14 | A kind of 3 points, four-point bending test machine adjusts fixture with centering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710447162.3A CN107132130A (en) | 2017-06-14 | 2017-06-14 | A kind of 3 points, four-point bending test machine adjusts fixture with centering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107132130A true CN107132130A (en) | 2017-09-05 |
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ID=59734645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710447162.3A Pending CN107132130A (en) | 2017-06-14 | 2017-06-14 | A kind of 3 points, four-point bending test machine adjusts fixture with centering |
Country Status (1)
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| CN (1) | CN107132130A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917844A (en) * | 2018-01-16 | 2018-04-17 | 天津工业大学 | A kind of 3 points of composite material, four-point bending fatigue universal test fixture |
| CN109175112A (en) * | 2018-07-27 | 2019-01-11 | 沈阳航空航天大学 | A kind of aperture synchronizes the thin plate bending experimental rig of symmetrical adjustment and punch-pin quick change |
| CN109459305A (en) * | 2018-12-11 | 2019-03-12 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of concrete for hydraulic structure Fatigue Cracking Test device |
| CN109765121A (en) * | 2019-01-07 | 2019-05-17 | 崔云兰 | A kind of the anti-bending test mechanism and its method of automobile pipe parts |
| CN109765122A (en) * | 2019-01-07 | 2019-05-17 | 崔云兰 | A kind of auto parts and components bending resistance cubing and its application method |
| CN112730098A (en) * | 2019-10-28 | 2021-04-30 | 核工业西南物理研究院 | Clamp for three-point bending test of small sample |
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| CN102141489A (en) * | 2010-12-13 | 2011-08-03 | 中国航空工业集团公司北京航空材料研究院 | Clamp improving bending and interlaminar shearing test efficiency of composite material |
| CN103149092A (en) * | 2013-02-26 | 2013-06-12 | 三峡大学 | Multifunctional concrete sample splitting device |
| CN203887567U (en) * | 2014-04-01 | 2014-10-22 | 繁昌县昌盛轴承锻造厂 | Bearing inner ring clamp with fast centering structure |
| CN204556384U (en) * | 2015-05-07 | 2015-08-12 | 西南交通大学 | A kind of for crack spreading zone test and the fixture of torture test |
| CN105004611A (en) * | 2015-05-06 | 2015-10-28 | 河海大学 | Method for studying material mechanics behaviors of concrete crack process zone |
| CN105300810A (en) * | 2015-11-27 | 2016-02-03 | 武汉钢铁(集团)公司 | Three-point bending test device with laser centering device |
| CN106198225A (en) * | 2016-09-12 | 2016-12-07 | 郑州大学 | A kind of multi-scenarios method loading experimental apparatus of piezoelectric semiconductor fracture failure |
| CN106483010A (en) * | 2016-09-12 | 2017-03-08 | 同济大学 | Bearing for beam-columns experimental provision |
| CN206876503U (en) * | 2017-06-14 | 2018-01-12 | 黄河科技学院 | A kind of 3 points, four-point bending test machine adjusts fixture with centering |
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| JP2010117224A (en) * | 2008-11-12 | 2010-05-27 | Shimadzu Corp | Test piece centering device |
| CN102141489A (en) * | 2010-12-13 | 2011-08-03 | 中国航空工业集团公司北京航空材料研究院 | Clamp improving bending and interlaminar shearing test efficiency of composite material |
| CN103149092A (en) * | 2013-02-26 | 2013-06-12 | 三峡大学 | Multifunctional concrete sample splitting device |
| CN203887567U (en) * | 2014-04-01 | 2014-10-22 | 繁昌县昌盛轴承锻造厂 | Bearing inner ring clamp with fast centering structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917844A (en) * | 2018-01-16 | 2018-04-17 | 天津工业大学 | A kind of 3 points of composite material, four-point bending fatigue universal test fixture |
| CN109175112A (en) * | 2018-07-27 | 2019-01-11 | 沈阳航空航天大学 | A kind of aperture synchronizes the thin plate bending experimental rig of symmetrical adjustment and punch-pin quick change |
| CN109459305A (en) * | 2018-12-11 | 2019-03-12 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of concrete for hydraulic structure Fatigue Cracking Test device |
| CN109765121A (en) * | 2019-01-07 | 2019-05-17 | 崔云兰 | A kind of the anti-bending test mechanism and its method of automobile pipe parts |
| CN109765122A (en) * | 2019-01-07 | 2019-05-17 | 崔云兰 | A kind of auto parts and components bending resistance cubing and its application method |
| CN109765121B (en) * | 2019-01-07 | 2021-11-05 | 合肥龙精灵信息技术有限公司 | Bending resistance testing mechanism and method for automobile pipe parts |
| CN109765122B (en) * | 2019-01-07 | 2021-12-14 | 南昌申宝汽车部件有限公司 | Automobile part bending resistance testing fixture and use method thereof |
| CN112730098A (en) * | 2019-10-28 | 2021-04-30 | 核工业西南物理研究院 | Clamp for three-point bending test of small sample |
| CN112730098B (en) * | 2019-10-28 | 2024-06-11 | 核工业西南物理研究院 | Clamp for three-point bending test of small sample |
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Inventor after: Wang Lei Inventor after: He Chunxia Inventor after: Zhu Liyue Inventor after: Li Yang Inventor after: Zhang Yuxiang Inventor before: He Chunxia Inventor before: Zhu Liyue Inventor before: Wang Lei Inventor before: Li Yang Inventor before: Zhang Yuxiang |
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Effective date of registration: 20200414 Address after: 450008, No. 21, Jinshui District, Henan, Huayuan Road, Zhengzhou Applicant after: HENAN PROVINCE INSTITUTE OF METROLOGY Applicant after: HUANGHE S & T College Address before: 450000 No. 94 middle navigation road, 27 District, Henan, Zhengzhou Applicant before: HUANGHE S & T College |