CN108896390A - A kind of minute yardstick double-shaft two-way loading tester - Google Patents
A kind of minute yardstick double-shaft two-way loading tester Download PDFInfo
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- CN108896390A CN108896390A CN201810353436.7A CN201810353436A CN108896390A CN 108896390 A CN108896390 A CN 108896390A CN 201810353436 A CN201810353436 A CN 201810353436A CN 108896390 A CN108896390 A CN 108896390A
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- 238000011068 loading method Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 238000005259 measurement Methods 0.000 claims abstract description 59
- 238000009434 installation Methods 0.000 claims abstract description 21
- 238000013461 design Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 11
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 2
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000002474 experimental method Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 241001670157 Gymnura Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PWPJGUXAGUPAHP-UHFFFAOYSA-N lufenuron Chemical compound C1=C(Cl)C(OC(F)(F)C(C(F)(F)F)F)=CC(Cl)=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F PWPJGUXAGUPAHP-UHFFFAOYSA-N 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 230000003542 behavioural effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0254—Biaxial, the forces being applied along two normal axes of the specimen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
- G01N2203/0647—Image analysis
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Abstract
The present invention provide a kind of minute yardstick double-shaft two-way loading tester it include framework platform component, drawing mechanism component, load measurement component, clamp assembly and strain measurement component；Drawing mechanism component is mounted on framework platform component by bolt, drawing mechanism component is fixed with load measurement component by being threadedly engaged, the grating scale of load measurement component, linear guide are bolted on framework platform component, load measurement component and clamp assembly are connected by pin, and strain measurement component is bolted on framework platform component；The present invention can select the fixture and different range sensors of different dimensional forms according to different test loads, facilitate installation and removal, can realize non-contact type strain measurement and experiment load measurement simultaneously；Structure is simple, good manufacturability, has application value.
Description
Technical field
The present invention designs a kind of minute yardstick double-shaft two-way loading tester, it can be used for test material, especially for thickness
Mechanical property of the thin plate under duplex bearing Tensile state between 0.02-0.4mm, belongs to engineering material, physical property, power
Learn experimental technique field.
Background technique
In recent years with environmental pollution, energy shortage the problems such as, becomes increasingly conspicuous, and the market demand of microminiaturized product significantly increases
Add, more and more micro-forming parts are applied to the fields such as microelectronics, automobile, aviation and medical treatment.Micro-forming inherits tradition
The advantages of Technology of Plastic Processing, but when the scale of material reduces to a certain extent, because scale effect, frictional resistance increase, hardly possible
With problems such as accurate positionings, its industrial applications is limited.Under minute yardstick material yield strengthening behavior be precisely describe it is micro-
The thin basis of forming process and the hot spot advanced problems of international research.At present when predicting the behavior of micro-forming material yield
Still using widely used Mises under macroscopic view, the yield criterions such as Hill series do not account for yield criterion and are applicable on the micro scale
Property.
The biaxial tension experiment of cruciform specimen passes through the load or displacement ratio of two axis of control in which can be convenient, and makes sample
Center obtains different stress-strain states, and then obtains any yield point in biaxial tension area under different loading paths.Cause
This, biaxial tensile test becomes the research most effective experimental method of plate yield behavior.Currently used for studying minute yardstick
The biaxial tensile test machine of yielded fastening behavior has not been reported, so that validity of the yield criterion under macroscopic view under micro-scale
Lack experimental verification always.For this purpose, having invented a kind of minute yardstick double-shaft two-way loading tester herein, foil complexity may be implemented
Deformation under load path solves the problems, such as foil bilateral loading equipment scarcity, higher cost, is the surrender of minute yardstick
Behavioral study provides technical support.
Summary of the invention
(1) purpose
The purpose of the present invention is to provide a kind of minute yardstick double-shaft two-way loading testers, to study metal foil under minute yardstick
The mechanical properties such as the yield behavior of material.Have many advantages, such as that four axis independently drive, is easy to disassemble, transmission is easy and measuring accuracy is high,
CCD camera can be cooperated to be observed the strained situation of sample during biaxial loadings.In conjunction with stress-strain measurement system and
Kinetic control system can be acquired and control to single shaft/biaxial stretch-formed load/displacement/strain signal, be calculated double
Stress-strain diagram of the axis in the both direction in different load tests, can be used for the research of foil mechanical property.
(2) technical solution
A kind of minute yardstick double-shaft two-way loading tester of the present invention, it include framework platform component, drawing mechanism component,
Load measurement component, clamp assembly and strain measurement component；Their mutual positional relationships are：Drawing mechanism component passes through
Bolt is mounted on framework platform component, and drawing mechanism component is fixed with load measurement component by being threadedly engaged, load
Measure the grating scale (31) of component, linear guide is bolted on framework platform component, load measurement component and fixture
Component is connected by pin (27), and strain measurement component is bolted on framework platform component；
The framework platform component includes rack (1) and anti-vibration platform (13)；Their mutual relationships are：Rack
(1) it is connected with each other with anti-vibration platform (13), such as is bolted between each other；
The shape design of the rack (1) is：It is cut into the aluminum profile of specific length first, then is welded into truss structure；
The shape design of the anti-vibration platform (13) is：Cross shape is processed into using steel plate；
The drawing mechanism component includes fixed support base (21), servo electric jar (19) and servo motor (18)
Deng；Their mutual relationships are：The two sides of the servo electric jar (19) pass through electric cylinder trunnion (20) and fixed support bottom
Seat (21) hingedly, has certain rotation allowance, it can be achieved that Fast Installation and disassembly；Servo motor (18) and servo electric jar (19)
Connected synchronous belt drive mechanism (17) is bolted；
The shape design of the fixation support base (21) is：L-type, bottom surface drilling are connected with anti-vibration platform (13) by bolt
It connects, there is the connecting hole with electric cylinder trunnion (20) cooperation in side；
The servo electric jar (19) selects existing product, model power nurse Tyke IMB40；
The servo motor (18) selects existing product, model Siemens Servo motor 1FK7033；
There are four drawing mechanism component settings, be respectively drawing mechanism component I (2), drawing mechanism component II (6),
Drawing mechanism component III (12) and drawing mechanism component IV (16)；
Four drawing mechanism components I (2), II (6), III (12), the structure of IV (16) are identical, four drawing mechanisms
Orthogonal thereto arrangement forms four electric loading system ends, wherein drawing mechanism component I (2) and drawing mechanism component III (12) difference cloth
It sets on unidirectional opposite position；Drawing mechanism component II (6) and drawing mechanism component IV (16) are arranged in Vertical Square
To relative position on；
The load measurement component includes linear guide I (22), guide rail slide block I (23), linear guide II (24), guide rail
Sliding block II (25), grating scale connector (30), grating scale (31), force snesor (28), sliding bottom (29) etc.；
Their mutual relationships are：The force snesor (28) and the vertical plane of sliding bottom (29) are solid by bolt
It is fixed；The sliding bottom (29) and guide rail slide block I (27) are fixed with guide rail slide block II (25) by screw；The grating scale connector
(30) screw and the reading head of sliding bottom (29) and grating scale (31) is used to connect respectively in both ends；The guide rail slide block I (23) with
Guide rail slide block II (25) can slide in linear guide I (22) and linear guide II (24) respectively；
The linear guide I (22) is identical as the structure of linear guide II (24), selects existing product, model HGR25；
The guide rail slide block I (23) is identical as the structure of guide rail slide block II (25), selects existing product, model
The side's HGH25CA sliding block；
The shape design of the grating scale connector (30) is：Four holes, the reading in two holes and grating scale (31) are drilled in square plate
Head connection, two holes are connect with sliding bottom (29)；
The grating scale (31) selects existing product, model Cigna KA300；
The force snesor (28) selects existing product, model HBM U10M；
The shape design of the sliding bottom (29) is：L-type, bottom surface octal pass through screw and guide rail slide block I (23) and guide rail
Sliding block II (25) connection, center side hole are connected through a screw thread with servo electric jar (19) projecting shaft, around center side hole
Octal is furnished with to connect by bolt with force snesor (28)；
The bilateral loading machine load measurement component setting there are four, be respectively load measurement component I (3),
Load measurement component II (7), load measurement component III (11) and load measurement component IV (15)；
Four load measurement components I (3), II (7), III (11), the structure of IV (15) are identical, it can be achieved that Fast Installation
With disassembly；
Four drawing mechanism components are cascaded respectively with four load measurement components；
The clamp assembly includes：Mechanical clamp body (37), fixture connecting shaft (35), fixture knob I (38), fixture rotation
Button II (41), fixture clamping plate I (39), fixture clamping plate II (40) etc.；Their mutual relationships are：The fixture connecting shaft (35)
It is connect by pin (33) with fixture installation axle (32)；The fixture installation axle (32) and mechanical clamp body (37) are connected by screw thread
It connects；The fixture knob I (38) is connected through a screw thread with fixture knob II (41) and mechanical clamp body (37)；The fixture clamping plate I
(39) it is hinged on fixture knob I (38), fixture clamping plate II (40) is hinged on fixture knob II (41)；
The shape design of the mechanical clamp body (37) is：Threaded hole is opened for fixture connecting shaft in c-type block structure, side
(35) threaded connection, bottom surface opens threaded connection of the threaded hole for fixture knob thereon；
The shape design of the fixture connecting shaft (35) is：Shape is cylinder, and one end cutting thread is for connecting mechanical clamp body
(37), the other end is processing consistent reach through hole perpendicular to axis direction, is connect by pin (33) with fixture installation axle (32)；
The fixture knob I (38) is identical with the structure of fixture knob II (41), and shape design is：It processes in boss shape
Shape cylindrical body, the external cylindrical surface of small diameter process screw thread, and end is support base, annular knurl on larger-diameter external cylindrical surface；
The fixture clamping plate I (39) is identical with the structure of fixture clamping plate II (40), and shape design is：Square plate side is friction
Face, the other side are boss for the hinged of fixture knob support base；
There are four the clamp assembly settings, is clamp assembly I (5), clamp assembly II (8), clamp assembly III respectively
(10) and clamp assembly IV (14)；Four clamp assemblies I (5), II (8), III (10), the structure of IV (14) are identical；
Four load measurement components be cascaded respectively with four clamp assemblies, it can be achieved that Fast Installation with tear open
It unloads；
The strain measurement component includes camera frame (4) and CCD camera (9), their mutual relationships are：CCD
Camera (9) is mounted on camera frame (4) by screw；
The shape design of the camera frame (4) is：It is cut into the aluminum profile of specific length first, then is welded into truss structure,
Have the characteristics that rigidity is big light-weight；
The CCD camera (9) selects existing product, model STINGRAY F145B.
(3) advantage and effect
1, different sizes can be selected according to different test loads using the design form of Ke Kuaisugenghuan collet in the present invention
The fixture of form.
2, the present invention using sensor can be changed quickly design form, can select different ranges according to different loads
Sensor.
3, electric cylinder of the present invention uses trunnion type connection type, and to increase rotation allowance, adapting to extraneous load impact influences,
Facilitate installation and removal.
4, the CCD camera (9) and force snesor (28) that the present invention uses can realize non-contact type strain measurement and reality simultaneously
Test load measurement.
5, structure is simple, good manufacturability, has application value.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention.
Specific label is as follows in figure：
1 rack, 2 drawing mechanism component, I 3 load measurement component, I 4 camera frame
5 clamp assembly, I 6 drawing mechanism component, II 7 load measurement component, II 8 clamp assembly II
9 CCD camera, 10 clamp assembly, III 11 load measurement component, III 12 drawing mechanism component III
13 anti-vibration platform, 14 clamp assembly, IV 15 load measurement component, IV 16 drawing mechanism component IV
Fig. 2 is drawing mechanism component schematic front view of the invention.
Figure label is as follows：
17 synchronous belt drive mechanism, 18 servo motor, 19 servo electric jar, 20 electric cylinder trunnion
21 fixed support bases
Fig. 3 is load measurement component schematic perspective view of the invention.
Figure label is as follows：
22 linear guide, I 23 guide rail slide block, I 24 linear guide, II 25 guide rail slide block II
26 axle sleeve, 27 pin, 28 force snesor, 29 sliding bottom
30 grating scale connector, 31 grating scale
Fig. 4 is clamp assembly schematic front view of the invention.
Figure label is as follows：
32 fixture installation axle, 33 pin, 34 fastening nut, I 35 fixture connecting shaft
36 fastening nut, II 37 jig main body, 38 fixture knob, I 39 fixture clamping plate I
40 fixture clamping plate, II 41 fixture knob II
Specific embodiment
See Fig. 1-Fig. 4, a kind of minute yardstick double-shaft two-way loading tester of the present invention, it includes framework platform component, draws
Stretch mechanism assembly, load measurement component, clamp assembly and strain measurement component；Their mutual positional relationships are：It stretches
Mechanism assembly is mounted on framework platform component by bolt, drawing mechanism component and load measurement component by be threadedly engaged into
Row is fixed, and the grating scale (31) of load measurement component, linear guide are bolted on framework platform component, load measurement group
Part and clamp assembly are connected by pin (27), and strain measurement component is bolted on framework platform component.
See that Fig. 1, framework platform include rack (1) and anti-vibration platform (13)；Their mutual relationships are：Rack (1)
It is bolted between anti-vibration platform (13), it is ensured that anti-vibration platform (13) upper surface is on horizontal position；
The shape design of the rack (1) is：It is cut into the aluminum profile of specific length first, then is welded into truss structure；
The shape design of the anti-vibration platform (13) is：Across shape is processed using steel plate；
See that Fig. 2, drawing mechanism component include fixed support base (21), servo electric jar (19) and servo motor (18)
Deng；Their mutual relationships are：The two sides of servo electric jar (19) pass through electric cylinder trunnion (20) and fixed support base
(21) hingedly, servo electric jar (19) is made to have certain rotation allowance, it can be achieved that Fast Installation and disassembly；Servo motor (18) and
The connected synchronous belt drive mechanism (17) of servo electric jar (19) is bolted；
The shape design of the fixation support base (21) is：L-type, bottom surface drilling are bolted with anti-vibration platform, side
There is the connecting hole with electric cylinder trunnion (20) cooperation in face；
The servo electric jar (19) selects existing product, model power nurse Tyke IMB40；
The servo motor (18) selects existing product, model Siemens Servo motor 1FK7033；
See Fig. 1, it is drawing mechanism component I (2), drawing mechanism component II respectively that there are four the settings of drawing mechanism component
(6), drawing mechanism component III (12) and drawing mechanism component IV (16)；
See Fig. 1, four drawing mechanism components I (2), II (6), III (12), the structure of IV (16) are identical, four stretching-machines
The orthogonal thereto arrangement of structure forms four electric loading system ends.The active direction of biaxial tension and driven direction are vertical in the horizontal plane, draw
It stretches mechanism assembly I (2) and drawing mechanism component III (12) is arranged on the relative position of biaxial tension active direction, stretch
Mechanism assembly II (6) and drawing mechanism component IV (16) are arranged on the relative position of biaxial tension active direction.Experiment
Four drawing mechanism components individually control in the process, two drawing mechanism component servo electric jar (19) kinematic axis in active direction
Displacement it is equal, the displacement of two drawing mechanism component servo electric jar (19) kinematic axis is equal on driven direction；
See that Fig. 3, load measurement component include linear guide I (22), guide rail slide block I (23), linear guide II (24), guide rail
Sliding block II (25), grating scale connector (30), grating scale (31), force snesor (28), sliding bottom (29) etc.；They mutually it
Between relationship be：Force snesor (28) and the vertical plane of sliding bottom (29) are bolted, and sliding bottom (29) uses screw
Fixed with guide rail slide block I (23) and guide rail slide block II (25), screw and sliding bottom are used in the both ends of grating scale connector (30) respectively
The reading head of seat (29) and grating scale (31) is fixed；
The linear guide I (22) is identical as the structure of linear guide II (24), selects existing product, model HGR25；
The guide rail slide block I (23) is identical as the structure of guide rail slide block II (25), selects existing product, model
The side's HGH25CA sliding block；
The shape design of the grating scale connector (30) is：Four holes, reading of two holes with grating scale (31) are drilled in square plate
Several connections, two holes are connect with sliding bottom (29)；
The grating scale (31) selects existing product, model Cigna KA300；
The force snesor (28) selects existing product, model HBM U10M；
The shape design of the sliding bottom (29) is：L-type, bottom surface octal by screw respectively with guide rail slide block I (23) and
Guide rail slide block II (25) connection, center side hole are connected through a screw thread with servo electric jar (19) projecting shaft, center side hole week
Uniformly distributed octal is enclosed to connect by bolt with force snesor (28)；
See Fig. 1, it is load measurement component I (3), load measurement component II respectively that there are four the settings of load measurement component
(7), load measurement component III (11) and load measurement component IV (15)；Its mutual assembly relation is：Force snesor (28) passes through
Screw is connected to sliding bottom (29), facilitates installation and removal；Four load measurement components I (3), II (7), III (11), IV
(15) structure is identical；
See that Fig. 4, clamp assembly include：Mechanical clamp body (37), fixture connecting shaft (35), fixture knob I (38), fixture rotation
Button II (41), fixture clamping plate I (39), fixture clamping plate II (40) etc.；Their mutual relationships are：Fixture connecting shaft (35) is logical
Pin (33) is crossed to connect with fixture installation axle (32)；Fixture installation axle (32) is connected through a screw thread with mechanical clamp body (37), folder
Tool knob I (38) is connected through a screw thread with fixture knob II (41) and mechanical clamp body (37), and fixture clamping plate I (39) is hinged on folder
Have on knob I (38), fixture clamping plate II (40) is hinged on fixture knob II (41).Rolling clamp knob I (38) can be passed through
With fixture knob II (41), so that fixture clamping plate I (39) and fixture clamping plate II (40) is moved up and down respectively, can clamp or unload lower plate
Material；
The shape design of the mechanical clamp body (37) is：Threaded hole is opened for fixture connecting shaft in c-type block structure, side
(35) threaded connection, bottom surface opens threaded connection of the threaded hole for fixture knob thereon；
The shape design of the fixture connecting shaft (35) is：Shape is cylinder, and one end cutting thread is for connecting mechanical clamp body
(37), other end vertical axis direction processes consistent reach through hole, is connect by pin (33) with clamp body installation axle (32)；
The shape design of the fixture knob I (38) and fixture knob II (41) is：Processing is in projection shape cylindrical body, compared with
The external cylindrical surface of minor diameter processes screw thread, and end is support base, annular knurl on larger-diameter external cylindrical surface；
The shape design of the fixture clamping plate I (39) and fixture clamping plate II (40) is：Square plate side is rubbing surface, the other side
It is boss for the hinged of fixture knob support base；
See Fig. 1, it is clamp assembly I (5), clamp assembly II (8), clamp assembly III respectively that there are four clamp assembly settings
(10) and clamp assembly IV (14)；Four clamp assemblies I (5), II (8), III (10), the structure of IV (14) are identical；Four load
It measures component and four clamp assembly are cascaded respectively, it can be achieved that Fast Installation and disassembly；
See that Fig. 1, strain measurement component include camera frame (4) and CCD camera (9)；Their mutual relationships are：CCD
Camera (9) is mounted on camera frame (4) by screw；
The shape design of the camera frame (4) is：It is cut into the aluminum profile of specific length first, then is welded into truss structure；
The CCD camera (9) selects existing product, model STINGRAY F145B.
Specific experimental method, mainly comprises the following steps：
The first step：Firstly for the processing of biaxial tension sample speckle, opens testing machine and open CCD camera (9), adjust and close
Suitable focal length.
Second step：Four servo motors (18) for stretching mechanism assembly are manually controlled, moving to four clamp assemblies can press from both sides
Handle the suitable position of plate.
Third step：The fixture knob I (38) and fixture knob II (41) for adjusting four clamp assemblies, make fixture clamping plate I
(39) and fixture clamping plate II (40) compresses plate sample.Then start to test, be moved synchronously by four axis of procedure auto-control, together
When experimentation in acquire force snesor (28) load measurement value and simultaneously save the corresponding moment CCD camera (9) obtain
Speckle image.
4th step：Experiment terminates, and the fixture knob I (38) and fixture knob II (41) for adjusting four clamp assemblies make fixture
Clamping plate I (39) and fixture clamping plate II (40) separation, take out sample, close testing machine.
Scantling, material selection, the process of the present apparatus can be determined for different applications, specifically include rack height
Degree and width, the parameter of tension sensor, the length of linear guide and model, the size of fixture, the height of camera fixed frame,
The resolution ratio of CCD camera.
Claims (2)
1. a kind of minute yardstick double-shaft two-way loading tester, it is characterised in that：It includes framework platform component, drawing mechanism group
Part, load measurement component, clamp assembly and strain measurement component；Drawing mechanism component is mounted on framework platform component by bolt
On, drawing mechanism component and load measurement component are fixed by being threadedly engaged, the grating scale (31) of load measurement component, straight
Line guide rail is bolted on framework platform component, and load measurement component and clamp assembly are connected by pin (27),
Strain measurement component is bolted on framework platform component；
The framework platform component includes rack (1) and anti-vibration platform (13)；Rack (1) is mutually interconnected with anti-vibration platform (13)
It connects；
The shape design of the rack (1) is：It is cut into the aluminum profile of specific length first, then is welded into truss structure；
The shape design of the anti-vibration platform (13) is：Cross shape is processed into using steel plate；
The drawing mechanism component includes fixed support base (21), servo electric jar (19) and servo motor (18)；This is watched
The two sides of electric cylinder (19) are taken by electric cylinder trunnion (20) and fix support base (21) hingedly, have a scheduled rotation abundant
Amount is able to achieve Fast Installation and disassembly；The synchronous belt drive mechanism that the servo motor (18) and servo electric jar (19) are connected
(17) it is bolted；
The fixation support base (21) is：L-type, bottom surface drilling be bolted with anti-vibration platform (13), side have with it is electronic
The connecting hole of cylinder trunnion (20) cooperation；
The servo electric jar (19) selects existing product；
The servo motor (18) selects existing product；
There are four the drawing mechanism component settings, is drawing mechanism component I (2) respectively, drawing mechanism component II (6), stretches
Mechanism assembly III (12) and drawing mechanism component IV (16)；
Four drawing mechanism components I (2), II (6), III (12), the structure of IV (16) are identical, and four drawing mechanisms are in just
Arrangement is handed over, forms four electric loading system ends, wherein drawing mechanism component I (2) and drawing mechanism component III (12) are arranged in
On unidirectional opposite position；Drawing mechanism component II (6) and drawing mechanism component IV (16) are arranged in vertical direction
On relative position；
The load measurement component includes linear guide I (22), guide rail slide block I (23), linear guide II (24), guide rail slide block
II (25), grating scale connector (30), grating scale (31), force snesor (28) and sliding bottom (29)；
The force snesor (28) and the vertical plane of sliding bottom (29) are bolted；The sliding bottom (29) and guide rail slide block
I (27) are fixed with guide rail slide block II (25) by screw；Screw and sliding bottom are used respectively in the both ends of the grating scale connector (30)
Seat (29) is connected with the reading head of grating scale (31)；The guide rail slide block I (23) and guide rail slide block II (25) are respectively in linear guide I
(22) it is slided in linear guide II (24)；
The linear guide I (22) is identical as the structure of linear guide II (24), selects existing product；
The guide rail slide block I (23) is identical as the structure of guide rail slide block II (25), selects existing product；
Four holes are drilled in the square plate of the grating scale connector (30), two holes are connect with the reading head of grating scale (31), two holes and cunning
Dynamic pedestal (29) connection；
The grating scale (31) selects existing product；
The force snesor (28) selects existing product；
The sliding bottom (29) is：L-type, bottom surface octal are connect by screw with guide rail slide block I (23) and guide rail slide block II (25),
Center side hole is connected through a screw thread with servo electric jar (19) projecting shaft, is evenly equipped with octal around center side hole and is passed through bolt
It is connect with force snesor (28)；
There are four the load measurement component settings of the bilateral loading machine, is load measurement component I (3) respectively, described
Four load measurement components I (3), II (7), III (11), the structure of IV (15) are identical, are able to achieve Fast Installation and disassembly；
Four drawing mechanism components are cascaded respectively with four load measurement components；
The clamp assembly includes：Mechanical clamp body (37), fixture connecting shaft (35), fixture knob I (38), fixture knob II
(41), fixture clamping plate I (39) and fixture clamping plate II (40)；The fixture connecting shaft (35) passes through pin (33) and fixture installation axle
(32) it connects；The fixture installation axle (32) is connected through a screw thread with mechanical clamp body (37)；The fixture knob I (38) and fixture revolve
Button II (41) is connected through a screw thread with mechanical clamp body (37)；The fixture clamping plate I (39) is hinged on fixture knob I (38), folder
Tool clamping plate II (40) is hinged on fixture knob II (41)；
The mechanical clamp body (37) is：C-type block structure, side are opened screw thread of the threaded hole for fixture connecting shaft (35) and are connected
It connects, bottom surface opens threaded connection of the threaded hole for fixture knob thereon；
The shape of the fixture connecting shaft (35) is cylinder, and for connecting mechanical clamp body (37), the other end is hanging down for one end cutting thread
Consistent reach through hole directly is processed in axis direction, is connect by pin (33) with fixture installation axle (32)；
The fixture knob I (38) is identical with the structure of fixture knob II (41), processes in projection shape cylindrical body, small straight
The external cylindrical surface of diameter processes screw thread, and end is support base, the annular knurl on the external cylindrical surface of major diameter；
The fixture clamping plate I (39) is identical with the structure of fixture clamping plate II (40), and square plate side is rubbing surface, and the other side is boss
For the hinged of fixture knob support base；
There are four the clamp assembly settings, is clamp assembly I (5), clamp assembly II (8), clamp assembly III (10) respectively
With clamp assembly IV (14)；Four clamp assemblies I (5), II (8), III (10), the structure of IV (14) are identical；
Four load measurement components are cascaded respectively with four clamp assemblies, are able to achieve Fast Installation and disassembly；
The strain measurement component includes camera frame (4) and CCD camera (9), which is mounted on phase by screw
In rack (4)；
The shape design of the camera frame (4) is：It is cut into the aluminum profile of specific length first, then is welded into truss structure, has
The big light-weight feature of rigidity；
The CCD camera (9) selects existing product.
2. a kind of minute yardstick double-shaft two-way loading tester according to claim 1, it is characterised in that：The rack is flat
Rack (1) and anti-vibration platform (13) in platform component, are bolted between each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353436.7A CN108896390A (en) | 2018-04-19 | 2018-04-19 | A kind of minute yardstick double-shaft two-way loading tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353436.7A CN108896390A (en) | 2018-04-19 | 2018-04-19 | A kind of minute yardstick double-shaft two-way loading tester |
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| CN108896390A true CN108896390A (en) | 2018-11-27 |
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ID=64342329
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| CN201810353436.7A Pending CN108896390A (en) | 2018-04-19 | 2018-04-19 | A kind of minute yardstick double-shaft two-way loading tester |
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| CN110047357A (en) * | 2019-04-30 | 2019-07-23 | 清华大学 | Tandem-axle load strain testing experiment teaching system and method |
| CN110095216A (en) * | 2019-05-31 | 2019-08-06 | 南京工程学院 | A kind of two dimension prestress application device and its working method |
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