CN204405428U - A kind of Sample location assembly of dynamic thermomechanical analysis apparatus double cantilever beam fixture - Google Patents
A kind of Sample location assembly of dynamic thermomechanical analysis apparatus double cantilever beam fixture Download PDFInfo
- Publication number
- CN204405428U CN204405428U CN201520118518.5U CN201520118518U CN204405428U CN 204405428 U CN204405428 U CN 204405428U CN 201520118518 U CN201520118518 U CN 201520118518U CN 204405428 U CN204405428 U CN 204405428U
- Authority
- CN
- China
- Prior art keywords
- positioning
- sample
- cantilever beam
- double cantilever
- fixture
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
针对现有的动态热机械分析仪(DMA)的双悬臂梁夹具存在样品难于准确定位,导致测试结果误差大及数据重现性差的不足。提供一种动态热机械分析仪双悬臂梁夹具的样品定位组件,在现有双悬臂梁夹具的基础上,设计加装了样品定位组件,由滚花紧固螺钉,定位尺,定位导向柱和定位固定片组成:定位尺上的导向槽与导向柱的导向面配合实现定位尺的垂直于样品长度方向的移动;根据样品宽度,设定定位尺上的刻度与定位导向柱上的刻度槽对齐位置,实现对样品的准确定位。采用样品定位组件:样品的对中性好,不影响测试的结果;定位组件的安装不破坏夹具原有的结构,组成简单,便于操作;测试结果的误差小,数据的重现性好。适合于各类材料测试实验室使用。
For the existing double cantilever beam fixture of the dynamic thermomechanical analyzer (DMA), it is difficult to locate the sample accurately, resulting in large errors in test results and poor data reproducibility. Provides a sample positioning assembly for the double cantilever beam fixture of a dynamic thermomechanical analyzer. On the basis of the existing double cantilever beam fixture, a sample positioning assembly is designed and installed, which consists of a knurled fastening screw, a positioning ruler, a positioning guide column and Composition of positioning and fixing pieces: the guide groove on the positioning ruler cooperates with the guiding surface of the guide column to realize the movement of the positioning ruler perpendicular to the length of the sample; according to the width of the sample, set the scale on the positioning ruler to align with the scale groove on the positioning guide column position to achieve accurate positioning of the sample. The sample positioning component is used: the sample has good neutrality and does not affect the test result; the installation of the positioning component does not destroy the original structure of the fixture, the composition is simple, and it is easy to operate; the error of the test result is small, and the data reproducibility is good. It is suitable for use in various material testing laboratories.
Description
技术领域technical field
本实用新型涉及动态热机械分析仪(DMA),主要涉及此类仪器的双悬臂梁夹具,特别涉及到一种动态热机械分析仪双悬臂梁夹具的样品定位组件。The utility model relates to a dynamic thermomechanical analyzer (DMA), mainly to a double cantilever beam fixture of this type of instrument, in particular to a sample positioning component of a dynamic thermomechanical analyzer double cantilever beam fixture.
背景技术Background technique
动态热机械分析仪(DMA)主要用于测试材料的动态粘弹性,可得到材料的动态模量和损耗因子,从而反映材料的刚度和阻尼大小。动态热机械分析仪(DMA)可进行温度、频率、应变等实验扫描模式,样品的形变模式包括双悬臂梁弯曲、三点弯曲、拉伸、压缩、剪切等。其中双悬臂梁弯曲模式,用到的双悬臂梁夹具包括固定部分和可动部分,固定部分两端各有一个压紧抓,可动部分位于两个固定压紧抓的中间并带有压紧抓。根据测试原理和规范要求,测试的长条状样品在安装的时候,要穿过这三个压紧抓并与其保持垂直,同时样品保持在每个压紧抓的中间位置,这样得到的测试结果才准确可靠,具有较好的重现性。由于该仪器所用的长条状样品的总长度达60mm,样品在安装的时候,很难通过目测使其与三个压紧抓保持垂直并处于压紧抓的中间位置,导致测试结果出现较大误差,无法保证测试结果的重现性。Dynamic Thermomechanical Analyzer (DMA) is mainly used to test the dynamic viscoelasticity of materials, and can obtain the dynamic modulus and loss factor of materials, thus reflecting the stiffness and damping of materials. The dynamic thermomechanical analyzer (DMA) can perform experimental scanning modes such as temperature, frequency, and strain. The deformation modes of the sample include double cantilever beam bending, three-point bending, tension, compression, and shear. In the double cantilever beam bending mode, the double cantilever beam fixture used includes a fixed part and a movable part. There is a compression grip at each end of the fixed part, and the movable part is located in the middle of the two fixed compression grips and has a compression grip. Grasp. According to the test principle and specification requirements, when the test strip sample is installed, it must pass through the three clamping grips and keep it perpendicular to them, and at the same time the sample is kept in the middle of each clamping grip, so that the test results obtained It is accurate, reliable and has good reproducibility. Since the total length of the strip-shaped sample used in this instrument is up to 60mm, it is difficult to keep the sample perpendicular to the three grippers and in the middle of the grippers by visual inspection when the sample is installed, resulting in large test results. error, the reproducibility of test results cannot be guaranteed.
发明内容Contents of the invention
针对现有的动态热机械分析仪的双悬臂梁夹具存在的不足:样品难于准确定位,导致测试结果误差大及数据重现性差。在现有双悬臂梁夹具的基础上,设计加装了样品定位组件,可以实现样品的准确定位,同时不影响测试过程,解决了双悬臂梁弯曲测试数据重现性差的不足。In view of the shortcomings of the existing double cantilever beam fixture of the dynamic thermomechanical analyzer: it is difficult to accurately position the sample, resulting in large errors in test results and poor data reproducibility. On the basis of the existing double cantilever beam fixture, a sample positioning component is designed and installed, which can realize accurate positioning of the sample without affecting the test process, and solves the problem of poor reproducibility of double cantilever beam bending test data.
本实用新型解决其技术问题所采用的技术方案是:一种动态热机械分析仪双悬臂梁夹具的样品定位组件,由两个滚花紧固螺钉(41),两个定位尺(42),两个定位导向柱(43)和定位固定片(44)组成,定位导向柱(43)通过螺纹固定于定位固定片(44)的固定螺孔(71)中,定位尺(42)上的导向槽(53)与导向柱(43)的导向面(62)配合,滚花紧固螺钉(41)将定位尺(42)通过定位固定片(44)的紧固螺孔(73)压紧,定位尺(42)上的不同刻度(52)与定位导向柱(43)上的刻度槽(61)对齐确定样品的不同放置位置。The technical scheme adopted by the utility model to solve the technical problem is: a sample positioning assembly of a double cantilever beam fixture of a dynamic thermomechanical analyzer, which consists of two knurled fastening screws (41), two positioning rulers (42), Two positioning guide pillars (43) and a positioning fixing piece (44) are formed, and the positioning guiding column (43) is fixed in the fixing screw hole (71) of the positioning fixing piece (44) by threads, and the guide on the positioning ruler (42) The groove (53) cooperates with the guide surface (62) of the guide column (43), and the knurled fastening screw (41) compresses the positioning ruler (42) through the fastening screw hole (73) of the positioning and fixing piece (44), Different scales (52) on the positioning ruler (42) are aligned with the scale grooves (61) on the positioning guide column (43) to determine different placement positions of the samples.
本实用新型的有益效果是:采用样品定位组件后,两组定位尺(42)与定位导向柱(43)可以准确的限制样品的位置,样品的对中性好;样品定位后,将定位尺(42)撤离定位位置,不影响测试的结果;定位组件的安装不破坏夹具原有的结构,组成简单,便于操作;由于样品定位准确,测试结果的误差小,数据的重现性好。The beneficial effects of the utility model are: after adopting the sample positioning assembly, the two sets of positioning rulers (42) and the positioning guide column (43) can accurately limit the position of the sample, and the neutrality of the sample is good; after the sample is positioned, the positioning ruler (42) The evacuation of the positioning position does not affect the test results; the installation of the positioning components does not destroy the original structure of the fixture, the composition is simple, and it is easy to operate; due to the accurate positioning of the sample, the error of the test results is small and the reproducibility of the data is good.
附图说明Description of drawings
图1是本实用新型一种动态热机械分析仪双悬臂梁夹具的样品定位组件组装完成示意图图。Fig. 1 is a schematic diagram of the assembly of the sample positioning component of a double cantilever beam fixture of a dynamic thermomechanical analyzer of the present invention.
图2是图1的组装分解示意图。FIG. 2 is an assembled and exploded schematic view of FIG. 1 .
图3是图2中固定夹具组件(2)的组装示意图。Fig. 3 is an assembly diagram of the fixing fixture assembly (2) in Fig. 2 .
图4是图2中活动夹具组件(3)的组装示意图。Fig. 4 is a schematic diagram of assembly of the movable clamp assembly (3) in Fig. 2 .
图5是图2中定位组件(4)的组装示意图。Fig. 5 is a schematic diagram of the assembly of the positioning component (4) in Fig. 2 .
图6是图5的组装分解示意图。FIG. 6 is an assembled and exploded schematic view of FIG. 5 .
图7是图6中定位尺(42)的示意图。Fig. 7 is a schematic diagram of the positioning ruler (42) in Fig. 6 .
图8是图6中定位导向柱(43)的示意图。Fig. 8 is a schematic diagram of the positioning guide column (43) in Fig. 6 .
图9是图6中定位固定片(44)的示意图。Fig. 9 is a schematic diagram of the positioning and fixing piece (44) in Fig. 6 .
图中:1.底座,2.固定夹具组件,3.活动夹具组件,4.定位组件,5.样品,11.驱动轴,12.支撑立柱,13.梯形槽连接块,21.固定夹具座,22.内六角固定螺钉,23.活动压紧抓,24.内六角压紧螺钉,25.固定通孔,31.活动夹具连接件,32.内六角顶丝,41.滚花紧固螺钉,42.定位尺,43.定位导向柱,44.定位固定片,51.定位头,52.刻度尺,53.导向槽,61.刻度槽,62.导向面,71.固定螺孔,72.固定通孔,73.紧固螺孔In the figure: 1. Base, 2. Fixed fixture assembly, 3. Movable fixture assembly, 4. Positioning assembly, 5. Sample, 11. Drive shaft, 12. Support column, 13. Trapezoidal groove connection block, 21. Fixed fixture seat , 22. Inner hexagonal fixing screw, 23. Movable compression grip, 24. Inner hexagonal compression screw, 25. Fixed through hole, 31. Movable clamp connector, 32. Inner hexagonal top wire, 41. Knurled fastening screw , 42. positioning ruler, 43. positioning guide column, 44. positioning fixed piece, 51. positioning head, 52. scale, 53. guide groove, 61. scale groove, 62. guide surface, 71. fixing screw hole, 72 .Fixing through hole, 73. Fastening screw hole
具体实施方式Detailed ways
参照附图1、附图2、附图3和附图4,带有样品定位组件的动态热机械分析仪双悬臂梁夹具,包括底座(1),固定夹具组件(2),活动夹具组件(3)和定位组件(4)四个部分,首先将固定夹具组件(2)放置于底座(1)的支撑立柱(12)上,将不安装定位组件(4)处的两个内六角固定螺钉(22)插入固定夹具座(21)的固定通孔(25)与两个支撑立柱(12)上的螺纹孔对应固定,再将两个内六角固定螺钉(22)插入定位组件(4)中定位固定片(44)的固定通孔(72)和与固定夹具座(21)的固定通孔(25),与对应支撑立柱(12)固定,完成固定夹具组件(2)和定位组件(4)两部分的安装。将活动夹具组件(3)中的活动夹具连接件(31)与底座的梯形槽连接块(13)插入连接,通过内六角顶丝(32)使两者之间锁紧。With reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, the dynamic thermomechanical analyzer double cantilever beam fixture with sample positioning assembly comprises base (1), fixed fixture assembly (2), movable fixture assembly ( 3) and the four parts of the positioning component (4), first place the fixing fixture component (2) on the support column (12) of the base (1), and then do not install the two hexagon socket set screws at the positioning component (4) (22) Insert the fixing through hole (25) of the fixing fixture seat (21) to correspond to the threaded holes on the two support columns (12), and then insert the two hexagon socket set screws (22) into the positioning component (4) The fixing through hole (72) of the positioning fixture (44) and the fixing through hole (25) of the fixing fixture seat (21) are fixed with the corresponding support column (12), and the fixing fixture assembly (2) and the positioning assembly (4) are completed. ) Two-part installation. Insert and connect the movable fixture connector (31) in the movable fixture assembly (3) with the trapezoidal groove connection block (13) of the base, and lock the two through the inner hexagon screw (32).
参照附图5、附图6、附图7、附图8和附图9,一种动态热机械分析仪双悬臂梁夹具的样品定位组件,由两个滚花紧固螺钉(41),两个定位尺(42),两个定位导向柱(43)和定位固定片(44)组成,定位导向柱(43)通过螺纹固定于定位固定片(44)的固定螺孔(71)中,定位尺(42)上的导向槽(53)与导向柱(43)的导向面(62)配合,滚花紧固螺钉(41)将定位尺(42)通过定位固定片(44)的紧固螺孔(73)压紧,定位尺(42)上的不同刻度(52)与定位导向柱(43)上的刻度槽(61)对齐确定样品的不同放置位置。With reference to accompanying drawing 5, accompanying drawing 6, accompanying drawing 7, accompanying drawing 8 and accompanying drawing 9, a kind of sample positioning assembly of double cantilever beam fixture of dynamic thermomechanical analyzer, consists of two knurled fastening screws (41), two A positioning ruler (42), two positioning guide columns (43) and a positioning fixing piece (44) are formed, and the positioning guiding column (43) is fixed in the fixing screw hole (71) of the positioning fixing piece (44) by threads, and the positioning The guide groove (53) on the ruler (42) cooperates with the guide surface (62) of the guide column (43), and the knurled fastening screw (41) passes the positioning ruler (42) through the fastening screw of the positioning and fixing piece (44). The holes (73) are pressed tightly, and the different scales (52) on the positioning ruler (42) are aligned with the scale grooves (61) on the positioning guide column (43) to determine different placement positions of the samples.
参照附图7,定位尺(42)包括定位头(51),刻度(52)和导向槽(53)三部分,定位头(51)的厚度为5mm,刻度(52)的精度为0.5mm。With reference to accompanying drawing 7, positioning ruler (42) comprises positioning head (51), scale (52) and guide groove (53) three parts, the thickness of positioning head (51) is 5mm, and the precision of scale (52) is 0.5mm.
参照附图8,定位导向柱(43)包括螺纹、刻度槽(61)和导向面(62),两导向面间的尺寸与定位尺(42)中导向槽(53)的宽度相同。With reference to accompanying drawing 8, positioning guide post (43) comprises screw thread, scale groove (61) and guide surface (62), and the size between two guide surfaces is identical with the width of guide groove (53) in positioning ruler (42).
参照附图9,定位固定片(44)上包括两组固定螺孔(71)、固定通孔(72)和紧固螺孔(73),定位固定片(44)为圆弧形,与固定夹具组件(2)中固定夹具座(21)对应部分形状相同。With reference to accompanying drawing 9, comprise two groups of fixing screw holes (71), fixing through hole (72) and fastening screw hole (73) on the positioning and fixing sheet (44), the positioning and fixing sheet (44) is arc-shaped, and fixed The corresponding parts of the fixed fixture seat (21) in the fixture assembly (2) have the same shape.
本实用新型的操作过程为:首先将夹具各部分按要求完成安装,根据样品(5)的厚度尺寸,旋动内六角压紧螺钉(24)松开活动压紧抓(23);再根据样品(5)的宽度的一半,调整定位组件(4),松开滚花紧固螺钉(41),移动定位尺(42),根据定位尺(42)上的刻度(52)与定位导向柱(43)上的刻度槽(61)对齐位置,由定位尺(42)的定位头(51)对样品的放置进行定位;放置样品(5)时,将样品(5)穿过固定夹具组件(2)中的固定夹具座(21)和活动压紧抓(23),以及活动夹具组件(3)中的活动夹具连接件(31)和活动压紧抓(23),放入过程中将样品(5)向定位组件(4)中定位尺(42)的定位头(51)靠紧,即可实现样品(5)的准确放置,此时将内六角压紧螺钉(24)紧固,活动压紧抓(23)将样品(5)夹紧,实现样品(5)在固定夹具组件(2)和活动夹具组件(3)相应位置的固定;样品(5)定位固定后,再将滚花紧固螺钉(41)松开,将定位尺(42)撤离样品定位位置并固定,以免影响样品的测试;最后整套系统即可按照设置进行试验,驱动轴(11)运动测试得到测试样品(5)的相关数据。The operation process of the utility model is as follows: first, complete the installation of each part of the fixture according to the requirements, according to the thickness size of the sample (5), turn the inner hexagonal compression screw (24) to loosen the movable compression grip (23); then according to the sample (5) Half of the width of (5), adjust the positioning assembly (4), loosen the knurled fastening screw (41), and move the positioning ruler (42), according to the scale (52) on the positioning ruler (42) and the positioning guide column ( 43) the scale groove (61) on the alignment position, the placement of the sample is positioned by the positioning head (51) of the positioning ruler (42); when placing the sample (5), pass the sample (5) through the fixing fixture assembly (2 ) in the fixed fixture seat (21) and the movable clamping grip (23), and the movable fixture connector (31) and the movable clamping grip (23) in the movable fixture assembly (3), the sample ( 5) Close to the positioning head (51) of the positioning ruler (42) in the positioning assembly (4) to realize the accurate placement of the sample (5). Clamp the sample (5) tightly by grasping (23) to realize the fixation of the sample (5) at the corresponding positions of the fixed fixture assembly (2) and the movable fixture assembly (3); after the sample (5) is positioned and fixed, the knurled Loosen the fixing screw (41), remove the positioning ruler (42) from the sample positioning position and fix it, so as not to affect the test of the sample; finally, the whole system can be tested according to the setting, and the test sample (5) can be obtained by the drive shaft (11) motion test. related data.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201520118518.5U CN204405428U (en) | 2015-02-27 | 2015-02-27 | A kind of Sample location assembly of dynamic thermomechanical analysis apparatus double cantilever beam fixture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201520118518.5U CN204405428U (en) | 2015-02-27 | 2015-02-27 | A kind of Sample location assembly of dynamic thermomechanical analysis apparatus double cantilever beam fixture |
Publications (1)
Publication Number | Publication Date |
---|---|
CN204405428U true CN204405428U (en) | 2015-06-17 |
Family
ID=53429278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201520118518.5U Expired - Fee Related CN204405428U (en) | 2015-02-27 | 2015-02-27 | A kind of Sample location assembly of dynamic thermomechanical analysis apparatus double cantilever beam fixture |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN204405428U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107741367A (en) * | 2017-09-30 | 2018-02-27 | 交通运输部公路科学研究所 | A high-frequency fatigue test method for asphalt mixture slices under double cantilever mode |
CN111801559A (en) * | 2018-04-09 | 2020-10-20 | 日本电产科宝电子株式会社 | Fixing device for strain sensor and torque sensor using the same |
-
2015
- 2015-02-27 CN CN201520118518.5U patent/CN204405428U/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107741367A (en) * | 2017-09-30 | 2018-02-27 | 交通运输部公路科学研究所 | A high-frequency fatigue test method for asphalt mixture slices under double cantilever mode |
CN111801559A (en) * | 2018-04-09 | 2020-10-20 | 日本电产科宝电子株式会社 | Fixing device for strain sensor and torque sensor using the same |
CN111801559B (en) * | 2018-04-09 | 2022-12-09 | 日本电产科宝电子株式会社 | Fixing device for strain sensor and torque sensor using the same |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN202512017U (en) | Device for gauge length graving and assisted final gauge length measurement of tension test piece | |
CN204630851U (en) | A kind of shear test apparatus | |
CN105891009B (en) | A kind of biology bone small size samples three point bending test device | |
CN202204502U (en) | Device for measuring pitch diameter of external thread | |
CN107132130A (en) | A kind of 3 points, four-point bending test machine adjusts fixture with centering | |
CN102928443A (en) | Bidirectional symmetrical stretcher | |
CN204405428U (en) | A kind of Sample location assembly of dynamic thermomechanical analysis apparatus double cantilever beam fixture | |
CN205958356U (en) | Sheet metal sample draws presses and fatigue test anchor clamps | |
CN210243687U (en) | Universal measuring clamp for measuring transverse piezoelectric constant of piezoelectric material | |
CN206848322U (en) | A kind of resistance test fixture | |
CN217059658U (en) | Three-point and four-point bending test fixture with parallel limit and continuously adjustable span | |
CN112362467A (en) | Plate-shaped sample centering device and centering structure for high-frequency fatigue test | |
CN206546296U (en) | A kind of through groove fixture for micro- gauge length lamellar sample extension test | |
CN101629884B (en) | Clamping apparatus for improving precision of material tester | |
CN101788252A (en) | Adjustable and movable lever indicator bracket on test flat plate and application method thereof | |
CN210037416U (en) | Detection apparatus for be used for wire pole intensity | |
CN204286797U (en) | A kind of locating support and analyzing flat instrument | |
CN110595878A (en) | Fixtures for friction and wear testing machines | |
CN216411069U (en) | A Cuvette Device for Ultraviolet Testing of Thin Film Samples | |
CN213091392U (en) | Clamping and butting device for rapidly measuring elongation rate of sample | |
CN221303054U (en) | Screw hardness detection device | |
CN206740020U (en) | A kind of crack measures guide frame device | |
CN204450308U (en) | A kind of sample detection fixture for X-ray diffractometer | |
CN212060071U (en) | Vertical Lead Folding Device for Acoustic Emission Detection Technology | |
CN204295551U (en) | A kind of displacement of the lines commissioning device sensor fastening device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20160227 |