CN208091817U - Fixture, fixture pair and fatigue tester - Google Patents
Fixture, fixture pair and fatigue tester Download PDFInfo
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- CN208091817U CN208091817U CN201820576294.6U CN201820576294U CN208091817U CN 208091817 U CN208091817 U CN 208091817U CN 201820576294 U CN201820576294 U CN 201820576294U CN 208091817 U CN208091817 U CN 208091817U
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Abstract
A kind of fixture of the utility model offer, fixture pair and fatigue tester, the fixture are used to that sample to be clamped, including：One end of collet and clamping part, collet is connect with traction electric machine, and the other end of collet is equipped with the groove for housing clamping part, and the cross-sectional area of groove notch is less than the cross-sectional area of slot bottom；Clamping part has the matched clamping face of outside wall surface with sample.Fixture provided by the utility model can be suitable for the clamping of different structure and the proximate matter of size, improve the stability of sample holder during fatigue test, ensure that the accuracy of fatigue test results.
Description
Technical field
The utility model is related to a kind of a kind of mechanics performance testing technology field more particularly to fixture, fixture pair and fatigues
Testing machine.
Background technology
Welded fatigue is a kind of principal mode for welding class material failure and destroying.It is happened at alternation or bears wave
In the welded unit of dynamic stress, the tensile strength of material, even lower than material will be less than by generally corresponding to the maximum stress destroyed
Yield point, fracture is often without the low stress fracture that is obviously plastically deformed, it is therefore desirable to accurately true by fatigue property test
Surely the fatigue behaviour of class material is welded.
It is mainly to be completed by HF fatigue testing machine to detect welded fatigue behaviour at present, high frequency fatigue test
Machine is mainly used for being measured metal, alloy material and its component (such as operating joint, fastener, screw part) in room temperature
Fatigue properties, fatigue life, precrack and the crack expansion test etc. of stretching, compression or tension and compression stress alternation under state.
Its stretching, compression or tension and compression stress alternation by applying high frequency to sample, tired examination is carried out to search the resonance point of sample
It tests.Existing HF fatigue testing machine uses standard class fixture, standard class fixture to be required with specific shape and size, because
This sample to be detected needs to carry out preprocessing, to meet the standard class clamp-shaped and size requirement.And existing high frequency
The test frequency that fatigue tester applies to sample during the test is mostly changeless, and test frequency may be up to
100Hz or so.
However since HF fatigue testing machine is limited by the requirement of standard fixture, pre-processed to destroy original
There is the structure of sample, therefore it may be only available for the fatigue test of plank and bar, and can not be suitable for having prepared molding type
Material class testing.And test frequency can not be adjusted during testing, therefore can not be suitable for the fatigue behaviour of low frequency sample
Test.
Utility model content
It is at least one in order to solve the problems, such as to mention in background technology, the utility model provide a kind of fixture, fixture pair and
Fatigue tester can be suitable for the clamping of different structure and the proximate matter of size, improve specimen holder during fatigue test
The stability held ensure that the accuracy of fatigue test results.
To achieve the goals above, one side the utility model provides a kind of fixture, for sample to be clamped, including：
One end of collet and clamping part, collet is connect with traction electric machine, and the other end of collet is equipped with for housing clamping part
Groove, the cross-sectional area of groove notch is less than the cross-sectional area of slot bottom.
Clamping part has the matched clamping face of outside wall surface with sample.
In above-mentioned fixture, optionally, clamping part is connect by fastener with sample.
In above-mentioned fixture, optionally, groove is square groove, and square groove has in opposite the first internal face and second
Wall surface, the first internal face and the second internal face are inclined surface, and the distance between the first internal face and the second internal face are by notch
One lateral slot bottom side gradually increases.
In above-mentioned fixture, optionally, clamping part includes the first clamping member and the second clamping piece, the first clamping member and
Two clamping pieces are oppositely arranged in square groove, and the side wall surface of the first clamping member is abutted with the first internal face, the second clamping piece
Side wall surface is abutted with the second internal face.
Sample is arranged between the first clamping member and the second clamping piece, the first clamping member and opposite two of the second clamping piece
Side wall surface constitutes clamping face.
In above-mentioned fixture, optionally, the first clamping member and the second clamping piece are wedge piece, the first clamping member and the
The side wall surface that the side wall surface and the second clamping piece that one internal face abuts are abutted with the second internal face is inclined surface.
The cross-sectional area of the first clamping member and the second clamping piece close to one laterally closer slot bottom side of notch by gradually increasing.
In above-mentioned fixture, optionally, square groove does not abut the first clamping member and the side wall surface of the second clamping piece opens up
There is opening, opening is connected to square groove, to expose the clamping part in square groove.
In above-mentioned fixture, optionally, which further includes support element, when sample is folded in clamping part, support
Part is filled in by opening in the hollow region of sample, so that the outside wall surface of sample is adjacent to clamping face.
In above-mentioned fixture, optionally, clamping part and sample are equipped with mounting hole, fastener wear successively clamping part and
The mounting hole of sample, sample is fixed in clamping part.
On the other hand, the utility model also provides a kind of fixture pair, including the first fixture and the second fixture, the first fixture and
Second fixture is above-mentioned fixture.
First fixture and the second fixture are folded in two ends of sample, and the axis of the collet of the first fixture and respectively
The axis of the collet of two fixtures is located at same straight line.
On the other hand, the utility model also provides a kind of fatigue tester, including：Traction electric machine and above-mentioned fixture pair,
First fixture one end of fixture centering and one end of the second fixture with the output axis connection of traction electric machine, the first fixture it is another
End and the second fixture other end are folded in two ends of sample respectively.
Traction electric machine applies active force to the first fixture and the second fixture, so that the two is along the first fixture or the second fixture
The axis of collet is close to each other or separate.
Fixture, fixture pair and fatigue tester provided by the utility model, the fixture include collet and clamping part, by
Groove is set in collet, in a groove by clamping part setting, sample is completed to be clamped using clamping part, can be pressed from both sides by replacing
Portion is held so that the fixture is suitable for the use of different structure and the sample of size, raising fixture, fixture pair and fatigue tester
Versatility, reduce manufacturing cost.Gradually increased by one lateral slot bottom side of notch by setting groove to cross-sectional area, and
The first clamping member of clamping part and the second clamping piece are set to wedge piece, so that the side wall of the first clamping member and the second clamping piece
Face paste closes the inclined side wall surface of groove, so that when fixture clamping and tensile sample, it can be by the end of clamping part and sample
Portion is fastened in groove securely, prevents its abjection.Further, by filling support element in the hollow region of sample, with
So that the outside wall surface of sample is fitted closely clamping face, prevents from being detached from clamping face during sample deformation, to ensure that fixture to right
The clamping stability of sample improves the accuracy of fatigue tester experimental result.
The construction of the utility model and its other purpose of utility model and advantageous effect will be in conjunction with the accompanying drawings
Description of preferred embodiments and it is more obvious and easy to understand.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is made simply to introduce, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts,
Other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram for the fixture that the utility model embodiment one provides；
Fig. 2 is the structural schematic diagram for the fixture that the utility model embodiment one provides；
Fig. 3 is the structural schematic diagram of the collet for the fixture that the utility model embodiment one provides；
Fig. 4 is the structural schematic diagram of the collet for the fixture that the utility model embodiment one provides；
Fig. 5 is the structural schematic diagram of the first clamping member for the fixture that the utility model embodiment one provides；
Fig. 6 is the structural schematic diagram of the second clamping piece of the fixture that the utility model embodiment one provides；
Fig. 7 is the structural schematic diagram of the fastener for the fixture that the utility model embodiment one provides；
Fig. 8 is the structural schematic diagram that the utility model embodiment two provides fixture pair and sample.
Reference sign：
10- fixtures；
20- collets；
21- grooves；
The first internal faces of 211-；
The second internal faces of 212-；
30- clamping parts；
31- the first clamping members；
The second clamping pieces of 32-；
33- clamping faces；
40- support elements；
50- fasteners；
60- mounting holes；
70- samples.
Specific implementation mode
To keep the purpose of this utility model, technical solution and advantage clearer, below in conjunction with the excellent of the utility model
The attached drawing in embodiment is selected, the technical scheme in the embodiment of the utility model is further described in more detail.In the accompanying drawings, certainly
Begin to indicate same or similar component or component with the same or similar functions to same or similar label eventually.It is described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Below with reference to the implementation of attached drawing description
Example is exemplary, it is intended to for explaining the utility model, and should not be understood as limiting the present invention.Based on this practicality
Embodiment in novel, the every other reality that those of ordinary skill in the art are obtained without creative efforts
Example is applied, shall fall within the protection scope of the present invention.The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " should broadly understood, and can also be by the indirect phase of intermediary for example, can make to be fixedly connected
Even, can be the interaction relationship of the connection or two elements inside two elements.For the ordinary skill people of this field
For member, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Embodiment one
Fig. 1 is the structural schematic diagram for the fixture that the utility model embodiment one provides.Fig. 2 is the utility model embodiment one
The structural schematic diagram of the fixture of offer.Fig. 3 is the structural schematic diagram of the collet for the fixture that the utility model embodiment one provides.Figure
The structural schematic diagram of the collet of 4 fixtures provided for the utility model embodiment one.Fig. 5 is that the utility model embodiment one provides
Fixture the first clamping member structural schematic diagram.Fig. 6 is the second clamping piece of the fixture that the utility model embodiment one provides
Structural schematic diagram.Fig. 7 is the structural schematic diagram of the fastener for the fixture that the utility model embodiment one provides.
With reference to shown in attached drawing 1 to attached drawing 7, the utility model embodiment one provides a kind of fixture 10, for sample to be clamped, wraps
It includes：
Collet 20 and clamping part 30, one end of collet 20 are connect with traction electric machine, and the other end of collet 20 is equipped with for holding
The groove 21 of clamping part 30 is set, the cross-sectional area of 21 notch of groove is less than the cross-sectional area of slot bottom.
Clamping part 30 has and the matched clamping face of the outside wall surface of sample 33.
It should be noted that fixture 10 provided by the utility model is mainly used for during fatigue test, clamping sample with
Just stretching, compression or tension and compression alternating load are applied to sample, to observe deformation process of the sample under load effect, analysis is tired
Labor breakoff phenomenon and Fracture Characteristics.Since sample deforms under load effect, therefore, in order to ensure that sample effectively deformed
Journey, sample end need to be fixed, it is avoided to be subjected to displacement due to deformation.And the load applied to sample is also to pass through
What the fixture 10 of sample end was realized, therefore 10 clamping stability of fixture is the basis of fatigue test results accuracy.
Fixture 10 provided in this embodiment, mainly by collet 20 complete clamping and apply load, one end of collet 20 with
The traction electric machine of fatigue tester connects, and the load of traction electric machine is transmitted by the collet 20, other end setting is for accommodating folder
Hold the groove 21 in portion 30.It should be pointed out that compared to the end that collet 20 is directly clamped in sample, it is sharp in the present embodiment
Sample is completed to accommodate with clamping part 30, it can be by replacing clamping part 30 so that the collet 20 is suitable for different shape and size
The clamping of sample.
It should be noted that due in fatigue test traction electric machine to sample apply tensile load, lead to the two of sample
There are pulling force at end, therefore to prevent clamping part 30 from deviating from from the groove 21 of collet 20 under the drive of sample, can be arranged recessed
The cross-sectional area of 21 notch of slot is less than the cross-sectional area of slot bottom, in this way when clamping part 30 by the pulling force of sample towards notch side
When mobile, it can be fastened on notch position since cross-sectional area reduces, to ensure stable holding of the collet 20 to sample.
Further, clamping part 30 is connect by fastener 50 with sample.
It should be noted that since sample can deform upon in drawing process, lengthened so as to cause overall length and wide
Degree reduces, therefore sample end and the clamping face 33 of clamping part 30 can be detached from.To prevent the generation of the phenomenon, clamping part 30
It is to be fastenedly connected with sample by fastener 50.Belonged to by the connection type of fastener 50 and be detachably connected, existed convenient for sample
Installation and removal in collet 20, simplify operating procedure.
It is understood that the cross-sectional area of 21 notch of groove is less than the cross-sectional area of slot bottom, specifically could be provided as：It is recessed
21 inside of slot includes the first slot section and the second slot section being interconnected, and the first slot section is arranged close to notch, and the second slot section is close to slot
Bottom is arranged, and the cross-sectional area of the first slot section is less than the cross-sectional area of the second slot section.Such setting can be in the cell wall of groove 21
Upper formation step structure, the step structure can deviate from collet 20 to clamping part 30 and play barrier effect.
Preferably, the set-up mode of groove 21 can also be the cross-sectional area of groove 21 by one lateral slot bottom side of notch by
Cumulative big, such setting ensure that 21 private side wall surface of groove is the planar structure seamlessly transitted.
As a preferred embodiment, groove 21 is square groove, square groove has opposite 211 He of the first internal face
Second internal face 212, the first internal face 211 and the second internal face 212 are inclined surface, and the first internal face 211 and the second inner wall
The distance between face 212 is gradually increased by one lateral slot bottom side of notch.
It should be noted that groove 21 is set as square groove in the present embodiment, it can be adapted for most of proximate matter sample
Clamping, the first internal face 211 and the second internal face 212 of groove 21 be set as inclined surface, and the angle of inclination of the inclined surface can
To be set as needed, the present embodiment is to this and is not limited.
Further, clamping part 30 includes the first clamping member 31 and the second clamping piece 32, and the first clamping member 31 and second is pressed from both sides
Gripping member 32 is oppositely arranged in square groove, and the side wall surface of the first clamping member 31 is abutted with the first internal face 211, the second clamping piece
32 side wall surface is abutted with the second internal face 212.
Sample is arranged between the first clamping member 31 and the second clamping piece 32,32 phase of the first clamping member 31 and the second clamping piece
To two side walls face constitute clamping face 33.
The first clamping member 31 and the second clamping piece 32 are wedge piece, and the first clamping member 31 is abutted with the first internal face 211
Side wall surface and the side wall surface that is abutted with the second internal face 212 of the second clamping piece 32 be inclined surface.
The cross-sectional area of the first clamping member 31 and the second clamping piece 32 is by gradual close to one laterally closer slot bottom side of notch
Increase.
It should be noted that clamping part 30 is set as the first clamping member 31 and the second clamping piece 32, respectively from the phase of sample
It is clamped in both sides.To adapt to the design in the 21 tilt internal wall face of groove, the first clamping member 31 and the setting of the second clamping piece 32
For wedge piece, i.e. the first clamping member 31 and the second clamping piece 32 has a corresponding inclined surface, the inclined surface respectively with the first inner wall
Face 211 and the second internal face 212 abut, and two inclined surface mutually abut, can in reversal interlocking relay of the clamping part 30 by sample
Effectively to prevent clamping part 30 from deviating from from the groove 21 of collet 20, the locking structure of machinery is formed.
It should be noted that with reference to shown in attached drawing 5, clamping face 33 could be provided as plane to adapt to the smooth outer wall of sample
Face, and actual in use, 33 structure of clamping face of clamping part 30 can be designed according to the surface texture of sample, this reality
Example is applied to this and is not limited, above-mentioned example is also not limited to.
Further, square groove does not abut the first clamping member 31 and the side wall surface of the second clamping piece 32 offers opening, opens
Mouth is connected to square groove, to expose the clamping part 30 in square groove.
It should be noted that the installation for ease of clamping part 30 and sample in collet 20, can be in the side of collet 20
Opening is set on shape slot.With reference to shown in attached drawing 3 and attached drawing 4, opening is the barbed portion of exposure square groove.Using process
In, now the first clamping member 31 of clamping part 30 and the second clamping piece 32 are arranged by the opening in square groove, then by sample
Setting completes clamping process between the first clamping member 31 and the second clamping piece 32.
Further, which further includes support element 40, and when sample is folded in clamping part 30, support element 40 passes through
Opening is filled in the hollow region of sample, so that the outside wall surface of sample is adjacent to clamping face 33.
It should be noted that when the shape extrusion of part, inside will appear hollow region, therefore apply load to sample
When, the outside wall surface of sample does not deform since support strength is smaller to be detached with clamping face 33, and clamping stability is caused to reduce.Cause
This fixture 10 provided in this embodiment can also include support element 40, which be filled in the hollow region of sample
, to improve the support strength of sample, the outside wall surface of sample is made to be fitted closely with clamping face 33.As a kind of optional embodiment party
The concrete structure of formula, support element 40 is referred to shown in the attached drawing 8 of embodiment two.
Specifically, clamping part 30 and sample are equipped with mounting hole 60, fastener 50 wears clamping part 30 and sample successively
Mounting hole 60, sample is fixed in clamping part 30.
The fixture 10 that the utility model embodiment one provides, including collet 20 and clamping part 30, by being set in collet 20
Groove 21 is set, clamping part 30 is arranged in groove 21, sample is completed to be clamped using clamping part 30, can be pressed from both sides by replacing
Portion 30 is held so that the fixture 10 is suitable for the use of different structure and the sample of size, raising fixture 10, fixture pair and fatigue
The versatility of testing machine reduces manufacturing cost.By by groove 21 be set as cross-sectional area by one lateral slot bottom side of notch by
It is cumulative big, and set the first clamping member of clamping part 30 31 and the second clamping piece 32 to wedge piece, so that the first clamping member 31
The inclined side wall surface of groove 21 is bonded with the side wall surface of the second clamping piece 32, so that when the clamping of fixture 10 and tensile sample,
The end of clamping part 30 and sample can be fastened in groove 21 securely, prevents its abjection.Further, by trying
Filling support element 40 prevents sample deformation process so that the outside wall surface of sample fits closely clamping face 33 in the hollow region of sample
Middle disengaging clamping face 33, to ensure that clamping stability of the fixture to sample.
Embodiment two
Fig. 8 is the structural schematic diagram that the utility model embodiment two provides fixture pair and sample.With reference to shown in attached drawing 8,
On the basis of above-described embodiment one, the utility model embodiment two also provides a kind of fixture pair, including the first fixture and the second folder
Tool, the first fixture and the second fixture can be the fixtures in embodiment one.
Specifically, the first fixture and the second fixture are folded in two ends of sample 70, and the collet of the first fixture respectively
The axis of the collet 20 of 20 axis and the second fixture is located at same straight line.
It should be noted that the fixture to including the first fixture and the second fixture be clamped in the both ends of sample 70 respectively,
When traction electric machine applies load, load can be transmitted by two ends of sample 70, therefore load is distributed in sample 70
Uniformity more preferably.The axis of the collet of the axis of the collet of first fixture 10 and the second fixture 10 is located at same straight line, can be with
It prevents in applying loading, since 70 both ends of sample do not generate torque in same straight line inside sample 70, influences tired
The result of labor experiment.
Other technical characteristics are identical as embodiment one, and can reach identical technique effect, and this is no longer going to repeat them.
The fixture pair that the utility model embodiment two provides, the fixture is to including above-mentioned fixture 10, by fixture
Groove 21 is set in 10 collet 20, clamping part 30 is arranged in groove 21, sample 70 is completed to press from both sides using clamping part 30
It holds, it can be by replacing clamping part 30 so that use of the fixture 10 suitable for different structure and the sample 70 of size, improves folder
The versatility of tool 10, fixture pair and fatigue tester reduces manufacturing cost.By setting groove 21 to cross-sectional area by slot
One lateral slot bottom side of mouth gradually increases, and sets the first clamping member of clamping part 30 31 and the second clamping piece 32 to wedge shape
Part, so that the inclined side wall surface of the first clamping member 31 and the side wall surface of the second clamping piece 32 fitting groove 21, so that fixture
When 10 clampings and tensile sample 70, the end of clamping part 30 and sample 70 can be fastened in groove 21 securely, prevented
It is deviate from.Further, by filling support element 40 in the hollow region of sample 70, so that the outside wall surface of sample 70 is closely pasted
Clamping face 33 is closed, prevents from being detached from clamping face 33 in 70 deformation process of sample, to ensure that fixture is steady to the clamping to sample 70
It is qualitative.
Embodiment three
On the basis of above-described embodiment one and embodiment two, the utility model embodiment three also provides a kind of fatigue test
Machine, including：Traction electric machine and above-mentioned fixture pair, first fixture one end of fixture centering and one end of the second fixture with traction
The output axis connection of motor, the other end of the first fixture and 10 other end of the second fixture are folded in two ends of sample 70 respectively
Portion.
Traction electric machine applies active force to the first fixture and the second fixture, so that the two is along the first fixture or the second fixture
The axis of collet 20 is close to each other or separate.
It should be noted that fatigue tester provided in this embodiment utilizes above-mentioned fixture to sample 70 is clamped, by leading
Draw motor and apply load to sample 70, which can be servo motor, by the operating voltage of control servomotor from
And regulate and control the output frequency of servo motor so that the fatigue tester is suitable for the fatigue test of the sample 70 of different frequency.
Other technical characteristics are identical as embodiment one and embodiment two, and can reach identical technique effect, herein no longer
It repeats one by one.
The utility model embodiment three provides a kind of fatigue tester, and sample 70, the fixture 10 packet is clamped by fixture 10
Collet 20 and clamping part 30 are included, by the way that groove 21 is arranged in collet 20, clamping part 30 is arranged in groove 21, folder is utilized
It holds portion 30 sample 70 is completed to be clamped, it can be by replacing clamping part 30 so that the fixture 10 is suitable for different structure and size
The use of sample 70 improves the versatility of fixture 10, fixture pair and fatigue tester, reduces manufacturing cost.By by groove
21 are set as cross-sectional area is gradually increased by one lateral slot bottom side of notch, and by the first clamping member of clamping part 30 31 and second
Clamping piece 32 is set as wedge piece, so that the inclined side of the first clamping member 31 and the side wall surface of the second clamping piece 32 fitting groove 21
Wall surface can block the end of clamping part 30 and sample 70 securely so that when the clamping of fixture 10 and tensile sample 70
It is located in groove 21, prevents its abjection.Further, by filling support element 40 in the hollow region of sample 70, so that examination
The outside wall surface of sample 70 fits closely clamping face 33, prevents from being detached from clamping face 33 in 70 deformation process of sample, to ensure that fixture
To the clamping stability to sample 70, the accuracy of fatigue tester experimental result is improved.
In the description of the present invention, it should be understood that term "upper", "lower", "front", "rear", "vertical" ", water
It is flat ", "top", "bottom", "inner", the orientation of the instructions such as "outside" or position relationship be that orientation based on ... shown in the drawings or position are closed
System, is merely for convenience of describing the present invention and simplifying the description, rather than indicates either to imply signified device or element
It must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.?
In the description of the utility model, the meaning of " plurality " is two or more, accurately specifically provide unless otherwise.
Term " first ", " second ", " third " in the description and claims of this application and above-mentioned attached drawing, "
The (if present)s such as four " are for distinguishing similar object, without being used to describe specific sequence or precedence.It should manage
The data that solution uses in this way can be interchanged in the appropriate case, so that embodiments herein described herein for example can be to remove
Sequence other than those of illustrating or describe herein is implemented.In addition, term " comprising " and " having " and theirs is any
Deformation, it is intended that cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, production
Product or equipment those of are not necessarily limited to clearly to list step or unit, but may include not listing clearly or for this
The intrinsic other steps of processes, method, product or equipment or unit a bit.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of fixture, for sample to be clamped, which is characterized in that including：
One end of collet and clamping part, the collet is connect with traction electric machine, and the other end of the collet is equipped with for housing
The groove of clamping part is stated, the cross-sectional area of the groove notch is less than the cross-sectional area of slot bottom；
The clamping part has the matched clamping face of outside wall surface with sample.
2. fixture according to claim 1, which is characterized in that the clamping part is connect by fastener with the sample.
3. fixture according to claim 2, which is characterized in that the groove is square groove, and the square groove has opposite
The first internal face and the second internal face, first internal face and second internal face are inclined surface, and in described first
The distance between wall surface and second internal face are gradually increased by one lateral slot bottom side of notch.
4. fixture according to claim 3, which is characterized in that the clamping part includes the first clamping member and the second clamping
Part, the first clamping member and second clamping piece are oppositely arranged in the square groove, and the side of the first clamping member
Wall surface is abutted with first internal face, and the side wall surface of second clamping piece is abutted with second internal face；
The sample is arranged between the first clamping member and second clamping piece, the first clamping member and described second
The opposite two side walls face of clamping piece constitutes the clamping face.
5. fixture according to claim 4, which is characterized in that the first clamping member and second clamping piece are wedge
Shape part, side wall surface that the first clamping member is abutted with first internal face and the second clamping piece and second internal face
The side wall surface of abutting is inclined surface；
The cross-sectional area of the first clamping member and second clamping piece is by gradual close to one laterally closer slot bottom side of notch
Increase.
6. fixture according to claim 5, which is characterized in that the square groove does not abut the first clamping member and described
The side wall surface of second clamping piece offers opening, and the opening is connected to the square groove, with the institute in the exposure square groove
State clamping part.
7. fixture according to claim 6, which is characterized in that further include support element, when the sample is folded in the folder
When holding in portion, the support element is filled in by the opening in the hollow region of the sample, so that the outer wall of the sample
The face paste tightly clamping face.
8. fixture according to claim 2, which is characterized in that the clamping part and the sample are equipped with mounting hole, institute
The mounting hole that fastener wears the clamping part and the sample successively is stated, the sample is fixed in the clamping part.
9. a kind of fixture pair, which is characterized in that including the first fixture and the second fixture, first fixture and second fixture
For the fixture described in any one of claim 1-8；
First fixture and second fixture are folded in two ends of sample respectively, and the collet of first fixture
The axis of the collet of axis and second fixture is located at same straight line.
10. a kind of fatigue tester, which is characterized in that including：Fixture pair described in traction electric machine and claim 9, the folder
One end of one end and the second fixture for having the first fixture of centering is pressed from both sides with the output axis connection of the traction electric machine, described first
The other end of tool and the second fixture other end are folded in two ends of sample respectively；
The traction electric machine applies active force to first fixture and second fixture, so that the two is along first fixture
Or the axis of the collet of second fixture is close to each other or separate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820576294.6U CN208091817U (en) | 2018-04-20 | 2018-04-20 | Fixture, fixture pair and fatigue tester |
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| CN201820576294.6U CN208091817U (en) | 2018-04-20 | 2018-04-20 | Fixture, fixture pair and fatigue tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002064A (en) * | 2021-11-02 | 2022-02-01 | 重庆邮电大学 | Multi-medium-based biaxial stretching instrument capable of adopting and disassembling clamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002064A (en) * | 2021-11-02 | 2022-02-01 | 重庆邮电大学 | Multi-medium-based biaxial stretching instrument capable of adopting and disassembling clamp |
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