CN206876503U - 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
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- CN206876503U CN206876503U CN201720689922.7U CN201720689922U CN206876503U CN 206876503 U CN206876503 U CN 206876503U CN 201720689922 U CN201720689922 U CN 201720689922U CN 206876503 U CN206876503 U CN 206876503U
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- arm
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- pedestal
- centering
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Abstract
The utility model discloses a kind of, four-point bending test machine fixture is adjusted with centering at 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, the lead set along the longitudinal direction is provided with 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 utility model 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 3 points, four-point bending test machine centering adjustment fixture compact-sized, accuracy of alignment is high.
Description
Technical field
The utility model belongs to bend test device technical field, more particularly to a kind of 3 points, four-point bending test machine
Fixture is adjusted with centering.
Background technology
Three point bending test is the material bending power such as the LCD Panel for examining metal, ceramics, glass and each electric appliances
Learn the experimental method of performance and fracture toughness, sample typically has a specific specification requirement, and three contact points of sample form equal
Two torque when three-point bending occurs, 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, forms simply supported beam shape
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 material property detection at present, four-point bending test fixture typically only serve the effect of support, it is to be tested
Sample is simply simply placed above fixture and tests 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 the depth of parallelism of sample and fixture
It is required that so the accuracy and authenticity of test data need to be suspected, 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.
Utility model content
The purpose of this utility model is to provide a kind of, four-point bending test machine centering adjustment fixture at 3 points, realized
The centering adjustment of sample to be tested, improves the required precision of the strong point centering of sample to be tested.
The utility model is adopted the technical scheme that to reach above-mentioned purpose：
A kind of 3 points, four-point bending test machine adjusts fixture, including bottom plate with centering, and pedestal is fixed with bottom plate,
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, sliding on slide rail
It is dynamic to be connected with left support arm and right support arm, the first fastening bolt is equipped with the bottom of left support arm and right support arm, in base
Seat is provided with the lead set along the longitudinal direction, and the front-end and back-end of the lead are stretched out on the outside of pedestal；On slide rail
Left and right centering body is equipped with, front and rear centering body is equipped with lead.
Preferably, the left and right centering body includes left registration arm and the 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 be 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, which are sequentially passed through, along left and right is provided with left and right adjusting spiral shell
Bar, the left and right adjusting screw rod are 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.
Preferably, 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, it is 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 respectively in front of pedestal with after
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.
Preferably, the support roller groove set along the longitudinal direction is equipped with the top of left support arm and right support arm, is being propped up
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.
Preferably, the prelocalization pawl and rear locating detent include two points of locating detents side by side.
Had the beneficial effect that possessed by the utility model：The utility model passes through left and right centering body and front and rear centering body
Be used cooperatively, fore-and-aft direction and right and left are realized to the band sample to be detected being placed on left support arm and right support arm
Adjusted to specified high-precision centering, be that a kind of compact-sized, accuracy of alignment high 3 points, four-point bending test machine are adjusted with centering
Whole fixture.
Brief description of the drawings
Fig. 1 is structural representation when the utility model removes front and rear centering body；
Fig. 2 is structural representation when the utility model removes left and right centering body；
Fig. 3 is the left view of prelocalization arm in Fig. 2.
Embodiment
The utility model 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 adjusts fixture, including bottom plate 16 with centering, the bottom of at
Pedestal 1 is fixed with plate 16, is provided with to further groove 17 in the middle at the top of pedestal 1, is provided with the top of pedestal 1 along right and left
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, and the lead 18 set along the longitudinal direction, the guiding are provided with 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.
Determine as shown in figure 1, the left and right centering body includes the left registration arm 4 and the right side that bottom is slidably connected with slide rail 2
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 left He of registration arm 4 of fixation
Right registration arm 13, left locating detent 7 is integrally formed with the top of left registration arm 4, it is right fixed to be integrally formed with the top of right registration arm 13
Position pawl 10, the left registration arm 4 are 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 symmetrical to further groove 17, and 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, which are sequentially passed through, along left and right is provided with left and right adjusting screw rod 15, institute
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 the left side i.e. in left and right adjusting screw rod 15 opposite with the screw thread of right registration arm 13 of left registration arm 4
Divide and the screw thread of right half part is 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 both ends to the left and right separate.
As shown in Fig. 2 for the utility model remove left and right centering body when, in Fig. 1 along A-A to structural representation,
The front and rear centering body includes prelocalization arm 19 and rear radius arm 23 that bottom is slidably connected with lead 18, in prelocalization
The bottom of arm 19 and rear radius arm 23 is equipped with the second fastening bolt（Not shown in figure）；Integrally set on the top of prelocalization arm 19
There is prelocalization pawl 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 distinguished
Positioned at the front and back of pedestal 1, along front and rear prelocalization arm 19 and the rear radius arm 23 of sequentially passing through provided with front and rear adjusting screw rod 20, institute
Front and rear adjusting screw rod 20 is stated to be threadedly coupled with prelocalization arm 19, rear radius arm 23, and prelocalization arm 19 and rear radius arm 23
Screw thread is on the contrary, the screw thread of first half and latter half when rotation is front and rear also on the contrary, so as to adjust on i.e. front and rear adjusting screw rod 20
During screw rod 20, prelocalization arm 19, rear radius arm 23 are synchronously drawn close to centre or synchronous both ends forwards, backwards separate.
As shown in figure 3, due to band sample place when, described further prelocalization pawl 21 He longer along left and right directions
Stationarity when two points of locating detents 26 that locating detent 22 is included side by side afterwards are positioned with increase to band sample to be measured, also simultaneously
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：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement, but these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (5)
1. a kind of, four-point bending test machine adjusts fixture, including bottom plate with centering, pedestal is fixed with bottom plate at 3 points, it is special
Sign is that 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, is provided with the lead set along the longitudinal direction on pedestal, and 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 left registration arm that is slidably connected with slide rail of bottom and right registration arm, 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 of right registration arm one
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, 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 |
|---|---|---|---|
| CN201720689922.7U CN206876503U (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 |
|---|---|---|---|
| CN201720689922.7U CN206876503U (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 |
|---|---|
| CN206876503U true CN206876503U (en) | 2018-01-12 |
Family
ID=61333695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720689922.7U Expired - Fee Related CN206876503U (en) | 2017-06-14 | 2017-06-14 | A kind of 3 points, four-point bending test machine adjusts fixture with centering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206876503U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132130A (en) * | 2017-06-14 | 2017-09-05 | 黄河科技学院 | A kind of 3 points, four-point bending test machine adjusts fixture with centering |
| CN109916759A (en) * | 2019-03-07 | 2019-06-21 | 武汉华星光电技术有限公司 | A kind of means for correcting of glass bending test fixture |
| CN111122303A (en) * | 2019-12-26 | 2020-05-08 | 西安交通大学 | Size-adjustable pressurizing, fixing and centering device and centering method |
| CN112067461A (en) * | 2020-08-24 | 2020-12-11 | 中国飞机强度研究所 | Composite material bending test device |
-
2017
- 2017-06-14 CN CN201720689922.7U patent/CN206876503U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132130A (en) * | 2017-06-14 | 2017-09-05 | 黄河科技学院 | A kind of 3 points, four-point bending test machine adjusts fixture with centering |
| CN109916759A (en) * | 2019-03-07 | 2019-06-21 | 武汉华星光电技术有限公司 | A kind of means for correcting of glass bending test fixture |
| CN111122303A (en) * | 2019-12-26 | 2020-05-08 | 西安交通大学 | Size-adjustable pressurizing, fixing and centering device and centering method |
| CN112067461A (en) * | 2020-08-24 | 2020-12-11 | 中国飞机强度研究所 | Composite material bending test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180112 Termination date: 20210614 |
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| CF01 | Termination of patent right due to non-payment of annual fee |