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 PDF

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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
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CN
China
Prior art keywords
sample
positioning
cantilever beam
location
analysis apparatus
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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.)
Expired - Fee Related
Application number
CN201520118518.5U
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Chinese (zh)
Inventor
于广水
温时宝
孙翀
张萍
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Qingdao University of Science and Technology
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Qingdao University of Science and Technology
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Priority to CN201520118518.5U priority Critical patent/CN204405428U/en
Application granted granted Critical
Publication of CN204405428U publication Critical patent/CN204405428U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

There is sample and be difficult to accurate location in the double cantilever beam fixture for existing dynamic thermomechanical analysis apparatus (DMA), causes the deficiency that test result error is large and data reappearance is poor.A kind of Sample location assembly of dynamic thermomechanical analysis apparatus double cantilever beam fixture is provided, on the basis of existing double cantilever beam fixture, Sample location assembly has been installed in design additional, by annular knurl trip bolt, positioning rule, positioning guide column and location stator composition: the gathering sill in positioning rule coordinates the movement perpendicular to sample length direction realizing positioning rule with the spigot surface of guidepost; Width per sample, the scale in setting positioning rule and the scale groove aligned position on positioning guide column, realize the accurate location to sample.Adopt Sample location assembly: the centering of sample is good, does not affect the result of test; The installation of positioning component does not destroy the original structure of fixture, and composition is simple, convenient operation; The error of test result is little, the favorable reproducibility of data.Be suitable for various types of materials test laboratory to use.

Description

A kind of Sample location assembly of dynamic thermomechanical analysis apparatus double cantilever beam fixture
Technical field
The utility model relates to dynamic thermomechanical analysis apparatus (DMA), relates generally to the double cantilever beam fixture of this quasi-instrument, is related specifically to a kind of Sample location assembly of dynamic thermomechanical analysis apparatus double cantilever beam fixture.
Background technology
Dynamic thermomechanical analysis apparatus (DMA) is mainly used in the dynamic viscoelastic of test material, can obtain dynamic modulus and the dissipation factor of material, thus the rigidity of reflection material and damping size.Dynamic thermomechanical analysis apparatus (DMA) can carry out the experiment such as temperature, frequency, strain scan pattern, the strain mode of sample comprises that double cantilever beam is bending, three-point bending, stretching, compression, shearing etc.Wherein double cantilever beam beam mode, the double cantilever beam fixture used comprises fixed part and moving part, and fixed part two ends respectively have a compression to grab, and moving part is positioned at two centres of grabbing grabbing with compression of being fixed and clamped.According to test philosophy and code requirement, the strip sample of test, when installation, will to be grabbed and vertical with its maintenance through these three compressions, while sample remain on the centre position that each compression grabs, the test result obtained so just accurately and reliably, has good reappearance.Because the total length of this instrument strip sample used reaches 60mm, sample is when installation, be difficult to make it grab with three compressions by range estimation keep vertical and be in the centre position compressing and grab, causing test result to occur comparatively big error, the reappearance of test result cannot be ensured.
Summary of the invention
Deficiency for the double cantilever beam fixture of existing dynamic thermomechanical analysis apparatus exists: sample is difficult to accurate location, causes that test result error is large and data reappearance is poor.On the basis of existing double cantilever beam fixture, Sample location assembly has been installed in design additional, can realize the accurate location of sample, does not affect test process simultaneously, solves the deficiency of double cantilever beam crooked test data reappearance difference.
The utility model solves the technical scheme that its technical matters adopts: a kind of Sample location assembly of dynamic thermomechanical analysis apparatus double cantilever beam fixture, by two annular knurl trip bolts (41), two positioning rules (42), two positioning guide columns (43) and location stator (44) composition, positioning guide column (43) is by being screwed in the fixing threaded hole (71) of location stator (44), gathering sill (53) in positioning rule (42) coordinates with the spigot surface (62) of guidepost (43), the fastening screw (73) of positioning rule (42) by location stator (44) compresses by annular knurl trip bolt (41), different scales (52) in positioning rule (42) align from the scale groove (61) on positioning guide column (43) and determine the different placement locations of sample.
The beneficial effects of the utility model are: after adopting Sample location assembly, and two groups of positioning rules (42) and positioning guide column (43) can limit the position of sample accurately, and the centering of sample is good; After Sample location, positioning rule (42) is withdrawn position location, does not affect the result of test; The installation of positioning component does not destroy the original structure of fixture, and composition is simple, convenient operation; Because Sample location is accurate, the error of test result is little, the favorable reproducibility of data.
Accompanying drawing explanation
Fig. 1 is that the Sample location assembling components of a kind of dynamic thermomechanical analysis apparatus double cantilever beam of the utility model fixture completes schematic diagram figure.
Fig. 2 is the assembling decomposing schematic representation of Fig. 1.
Fig. 3 is the assembling schematic diagram of stationary fixture assembly (2) in Fig. 2.
Fig. 4 is the assembling schematic diagram of floating holder assembly (3) in Fig. 2.
Fig. 5 is the assembling schematic diagram of positioning component in Fig. 2 (4).
Fig. 6 is the assembling decomposing schematic representation of Fig. 5.
Fig. 7 is the schematic diagram of positioning rule in Fig. 6 (42).
Fig. 8 is the schematic diagram of positioning guide column in Fig. 6 (43).
Fig. 9 is the schematic diagram of locating stator (44) in Fig. 6.
In figure: 1. base, 2. stationary fixture assembly, 3. floating holder assembly, 4. positioning component, 5. sample, 11. driving shafts, 12. support posts, 13. dovetail groove contiguous blocks, 21. stationary fixture seats, 22. allen screws, 23. movable compressions are grabbed, hexagonal housing screw in 24., 25. fixed vias, 31. floating holder web members, hexagonal jackscrew in 32., 41. annular knurl trip bolts, 42. positioning rules, 43. positioning guide columns, 44. location stators, 51. positioning heads, 52. rules, 53. gathering sills, 61. scale grooves, 62. spigot surfaces, 71. fixing threaded holes, 72. fixed vias, 73. fastening screws
Embodiment
With reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, with the dynamic thermomechanical analysis apparatus double cantilever beam fixture of Sample location assembly, comprise base (1), stationary fixture assembly (2), floating holder assembly (3) and positioning component (4) four parts, first stationary fixture assembly (2) is positioned on the support post (12) of base (1), the fixed via (25) uneasiness being filled two allen screws (22) insertion stationary fixture seat (21) at positioning component (4) place is corresponding with the threaded hole on two support posts (12) fixing, two allen screws (22) are inserted the fixed via (72) of location stator (44) and the fixed via (25) with stationary fixture seat (21) in positioning component (4) again, fix with corresponding support post (12), complete stationary fixture assembly (2) and positioning component (4) two-part installation.Floating holder web member (31) in floating holder assembly (3) is inserted with the dovetail groove contiguous block (13) of base and is connected, make to lock between the two by interior hexagonal jackscrew (32).
With reference to accompanying drawing 5, accompanying drawing 6, accompanying drawing 7, accompanying drawing 8 and accompanying drawing 9, a kind of Sample location assembly of dynamic thermomechanical analysis apparatus double cantilever beam fixture, by two annular knurl trip bolts (41), two positioning rules (42), two positioning guide columns (43) and location stator (44) composition, positioning guide column (43) is by being screwed in the fixing threaded hole (71) of location stator (44), gathering sill (53) in positioning rule (42) coordinates with the spigot surface (62) of guidepost (43), the fastening screw (73) of positioning rule (42) by location stator (44) compresses by annular knurl trip bolt (41), different scales (52) in positioning rule (42) align from the scale groove (61) on positioning guide column (43) and determine the different placement locations of sample.
With reference to accompanying drawing 7, positioning rule (42) comprises positioning head (51), scale (52) and gathering sill (53) three part, the thickness of positioning head (51) is 5mm, and the precision of scale (52) is 0.5mm.
With reference to accompanying drawing 8, positioning guide column (43) comprises screw thread, scale groove (61) and spigot surface (62), and the size between two spigot surfaces is identical with the width of gathering sill (53) in positioning rule (42).
With reference to accompanying drawing 9, location stator (44) comprises two groups of fixing threaded holes (71), fixed via (72) and fastening screw (73), location stator (44) is circular arc, identical with stationary fixture seat (21) corresponding part shape in stationary fixture assembly (2).
Operating process of the present utility model is: first fixture each several part is completed installation on request, per sample the gauge of (5), and in turn, hexagonal housing screw (24) unclamps movable compression and grabs (23), the half of the width of (5) more per sample, adjustment positioning component (4), unclamp annular knurl trip bolt (41), running fix chi (42), according to the scale (52) in positioning rule (42) and scale groove (61) aligned position on positioning guide column (43), positioned by positioning head (51) placement to sample of positioning rule (42), when placing sample (5), sample (5) is grabbed (23) through the stationary fixture seat (21) in stationary fixture assembly (2) and movable compression, and floating holder web member (31) in floating holder assembly (3) and movable compression are grabbed (23), the positioning head (51) of sample (5) to positioning component (4) positioning rule (42) is close to by process of putting into, the accurate placement of sample (5) can be realized, now by fastening for interior hexagonal housing screw (24), movable compression is grabbed (23) and is clamped by sample (5), realize fixing in stationary fixture assembly (2) and floating holder assembly (3) relevant position of sample (5), after sample (5) location is fixing, then annular knurl trip bolt (41) is unclamped, positioning rule (42) withdrawn Sample location position and fix, in order to avoid affect the test of sample, last whole system can be tested according to setting, and driving shaft (11) exercise test obtains the related data of testing sample (5).

Claims (4)

1. the Sample location assembly of a dynamic thermomechanical analysis apparatus double cantilever beam fixture, by two annular knurl trip bolts (41), two positioning rules (42), two positioning guide columns (43) and location stator (44) composition, it is characterized in that: positioning guide column (43) is by being screwed in the fixing threaded hole (71) of location stator (44), gathering sill (53) in positioning rule (42) coordinates with the spigot surface (62) of guidepost (43), the fastening screw (73) of positioning rule (42) by location stator (44) compresses by annular knurl trip bolt (41), different scales (52) in positioning rule (42) align from the scale groove (61) on positioning guide column (43) and determine the different placement locations of sample.
2. the Sample location assembly of a kind of dynamic thermomechanical analysis apparatus double cantilever beam fixture according to claim 1, it is characterized in that positioning rule (42) comprises positioning head (51), scale (52) and gathering sill (53) three part, the thickness of positioning head (51) is 5mm, and the precision of scale (52) is 0.5mm.
3. the Sample location assembly of a kind of dynamic thermomechanical analysis apparatus double cantilever beam fixture according to claim 1, it is characterized in that positioning guide column (43) comprises screw thread, scale groove (61) and spigot surface (62), the size between two spigot surfaces is identical with the width of gathering sill (53) in positioning rule (42).
4. the Sample location assembly of a kind of dynamic thermomechanical analysis apparatus double cantilever beam fixture according to claim 1, it is characterized in that location stator (44) comprises two groups of fixing threaded holes (71), fixed via (72) and fastening screw (73), location stator (44) is circular arc.
CN201520118518.5U 2015-02-27 2015-02-27 A kind of Sample location assembly of dynamic thermomechanical analysis apparatus double cantilever beam fixture Expired - Fee Related CN204405428U (en)

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

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CN204405428U true CN204405428U (en) 2015-06-17

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Cited By (1)

* Cited by examiner, † Cited by third party
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 kind of asphalt section high frequency fatigue test method under double cantilever modes

Cited By (1)

* Cited by examiner, † Cited by third party
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 kind of asphalt section high frequency fatigue test method under double cantilever modes

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150617

Termination date: 20160227

CF01 Termination of patent right due to non-payment of annual fee