CN105758740B - The small-sized torsional fatigue material mechanical property in-situ tester of controllable magnetic field intensity - Google Patents
The small-sized torsional fatigue material mechanical property in-situ tester of controllable magnetic field intensity Download PDFInfo
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- CN105758740B CN105758740B CN201610208878.3A CN201610208878A CN105758740B CN 105758740 B CN105758740 B CN 105758740B CN 201610208878 A CN201610208878 A CN 201610208878A CN 105758740 B CN105758740 B CN 105758740B
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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
- G01N3/26—Investigating twisting or coiling properties
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H21/00—Gearings comprising primarily only links or levers, with or without slides
- F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
- F16H21/40—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and oscillating motion
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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
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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
- G01N2203/003—Generation of the force
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Abstract
The present invention relates to a kind of small-sized torsional fatigue material mechanical property in-situ tester of controllable magnetic field intensity, belongs to precision scientific instrument field.Mainly it is made of precision actuation unit, gear unit, grip unit, magnetic field loading unit, detection unit, support unit.Wherein precision actuation unit motor drives the round end of grip unit to realize moment of torsion fatigue load loaded with fixed angle reciprocating rotary by the crank and rocker mechanism in retarder and gear unit；By varying crank, connecting rod and rocking bar bar length in crank and rocker mechanism, the adjustment of the reciprocal deflection angle of torsional fatigue is realized；By varying magnetic field loading unit cartridge distance, the adjustment of magnetic field intensity is realized.This tester complete machine uses horizontal type structure, and simple and compact, with light microscope good compatibility, can carry out sample real-time monitored in situ, and a kind of reliable means of testing is provided to disclose mechanical characteristic and Fatigue Damage Mechanism of the material under the effect of different magnetic field intensity.
Description
Technical field
The present invention relates to precision scientific instrument field, in-situ mechanical testing field, more particularly to a kind of controllable magnetic field intensity
Small-sized torsional fatigue material mechanical property in-situ tester.Material can be carried out under different magnetic field intensity, different torsion angles
Testing torsional fatigue, and real-time monitored in situ can be carried out to sample with integrated optics microscope, be to disclose material in different magnetic
Mechanical characteristic and Fatigue Damage Mechanism under field intensity effect provide a kind of reliable means of testing.
Background technology
The purpose of research and the synthesis of material is meet the needs of human material's civilization, and a specific material has it
It is basic that specific performance is that it has use value.And the research object of Mechanics Performance Testing, it is in external force for material
The performance showed under effect, such as elasticity, rigidity, intensity, plasticity, hardness, impact flexibility, fatigue strength and fracture toughness
Deng.According to statistics, fatigue rupture accounts for 80% in whole disabling elements, has seriously affected personal safety and national economy, therefore to material
Carrying out fatigue study has highly important meaning.
In recent years, using micro imaging systems such as light microscope, high depth-of-field microscope, electron microscopes to the mechanics of materials
The in-situ testing technique of dynamic monitoring is tested, and the deformation damage that lower material is acted on load carries out real-time monitored, can deeply disclose
The Micromechanics behavior of material, micromechanism of damage, research and development to materialogy play impetus.
Material is frequently subjected to torsional fatigue load, such as truck drive shaft, machine tool chief axis, motor shaft in real work,
In addition motor shaft, electro spindle are also in magnetic field when bearing torsional fatigue load.And currently for the torsional fatigue of material
Test device, is driven with servomotor, controls motor positive and inverse to realize fatigue load loaded, body by input electrical signal
Product can not realize greatly in-situ observation, and could not realize the loading in magnetic field.A kind of therefore small-sized torsion of controllable magnetic field intensity of exploitation
Tired material mechanical property in-situ test equipment, when bearing torsional fatigue load under the effect of different magnetic field intensity to research material
Micromechanics characteristic and Fatigue Damage Mechanism be of great significance.
The content of the invention
It is an object of the invention to provide a kind of small-sized torsional fatigue material mechanical property in-situ survey of controllable magnetic field intensity
Instrument is tried, solves the above problem existing in the prior art.The present invention is converted to motor unidirectional rotary using crank rocker principle
Fixture is grown to adjust with fixed angles angle value crankmotion by varying crank, connecting rod and rocking bar bar in crank and rocker mechanism
The size of the fixed angle, by varying the size of magnetic pole cartridge distance adjustment loading magnetic field intensity, is connected by fixing end fixture
The size of the torque sensor measurement moment of torsion connect, by the encoder that be connected with round end fixture measurement reciprocating rotary angle and tired
Labor cycle, so as to fulfill motor not commutation work when different magnetic field strength condition under material torsional fatigue test.The present invention can
Dynamic in situ is carried out with reference to light microscope to the deformation damage of material, microstructure change and performance development in loading procedure to supervise
Survey, so to material different magnetic field intensity effect under mechanical characteristic and Fatigue Damage Mechanism further investigate.
The above-mentioned purpose of the present invention is achieved through the following technical solutions：
The small-sized torsional fatigue material mechanical property in-situ tester of controllable magnetic field intensity, overall to use horizontal type structure, letter
It is single compact, mechanical characteristic, microstructure morphology, fracture crack that lower material torsional fatigue show can be acted on different magnetic field intensity
Carry out real-time monitored in situ.Including precision actuation unit, gear unit, grip unit, magnetic field loading unit, detection unit；Institute
State precision actuation unit and 20 side of base is fixed on by electric machine support 4, include motor encoder 1, disc type electric machine 2, retarder
3, motor encoder 1, retarder 3 are connected with disc type electric machine 2 respectively, and power is provided for complete machine instrument；The gear unit passes through
Motor coupler 5 is connected with precision actuation unit, is fixed on by bearing 23 on base 20, with 2 homonymy of disc type electric machine；The clamping
Unit is divided into fixing end clamping device and round end clamping device two parts, and passes through clamp mount II 15, clamp mount I respectively
21 are fixed on the both sides of base 20；The magnetic field loading unit is fixed by screws in 20 middle of base；The detection unit
Comprising encoder 6 and torque sensor 17, encoder 6 is fixed on 23 side of bearing by supporting rack 7, and torque sensor 17 passes through
Sensor support base 18 is fixed on the side away from disc type electric machine 2 on base 20.
The gear unit includes transmission shaft 22, disk I 8, disk II 9 and axis pin I, II 25,26, the transmission shaft 22
It is installed on by a pair of bearings I 24 on bearing 23, transmission shaft 22 is connected by axis pin I 25 with disk I 8, and disk I 8 passes through axis pin
II 26 are connected with disk II 9, form crank and rocker mechanism；The disk II 9 is being rotated by the axle sleeve I 28 and clamp spring of its both sides
Axially position is obtained on the fixture 10 of end, and is connected by key with round end fixture 10 to transmit moment of torsion；The gear unit is by electricity
The complete cycle rotary motion that machine shaft coupling 5 transmits, is converted to disk II 9 and drives round end fixture 10 past with fixed angle along its axis
Multiple rotation, the loading of torsional fatigue load during so as to fulfill motor Unidirectional.
The transmission shaft 22, disk I 8, disk II 9 are equipped with uniformly distributed pin shaft hole, by adjusting axis pin I 25, pin shaft II
The adjusting to crank, connecting rod and rocking bar bar length in crank and rocker mechanism is completed in 26 mounting hole position, so as to change round end fixture
Reciprocal deflection angle size, realizes the adjusting of the reciprocal deflection angle of torsional fatigue.
The round end clamping device is made of round end fixture 10 and pressing plate I 11, and pressing plate I 11 passes through screw and rotation
End fixture 10 connects and compresses sample, both are both provided with groove to clamp sample 32；The round end fixture 10 passes through bearing
II 27 are installed on clamp mount I 21, and the shaft shoulder and jump-ring slot are provided with round end fixture 10, by clamp spring compress disk II 9,
Axle sleeve I 28 is positioned bearing II 30.
The fixing end clamping device is made of fixing end fixture 14 and pressing plate II 13, and pressing plate II 13 is by screw and admittedly
Fixed end fixture 14 connects and compresses sample, both are both provided with groove to clamp sample 32；The fixing end fixture 14 passes through axis
Hold III 31 to be installed on clamp mount II 15, the shaft shoulder is machined with fixing end fixture 10, shaft sleeve II 30 is compressed by connecting shaft 16
Positioned bearing III 31.
The magnetic field loading unit is made of a pair of of magnetic pole cartridge 12 and magnet support 19, two magnetic pole cartridges, 12 symmetrical cloth
32 both sides of sample are placed in, and are fixed on by magnet support 19 on base 20, realize that complete machine magnetic field loads；At the same time by adjusting magnetic
The thickness for the gasket installed between pole cartridge and magnet support changes the spacing of two magnetic pole cartridges, completes magnetic field intensity residing for sample
Adjustment, realizes the experiment under the effect of different magnetic field intensity.
The detection unit is made of encoder 6 and torque sensor 17, and wherein encoder 6 passes through encoder coupler
29 are connected with round end fixture 10, realize the measurement to the reciprocal deflection angle size of round end fixture and tired cycle；Moment of torsion passes
Sensor 17 is connected by screw with connecting shaft 16, so as to fulfill to passing to 16 moment of torsion of connecting shaft by key by fixing end fixture 14
The measurement of size.
The size of main body of the small-sized torsional fatigue material mechanical property in-situ tester of the controllable magnetic field intensity is
296mm × 80mm × 60mm, with light microscope good compatibility.
The beneficial effects of the present invention are：Compact integral structure, and light microscope good compatibility, can real-time monitored not
The change of the microscopic appearance of material, institutional framework etc. during torsional fatigue is born under being acted on magnetic field intensity.Different from traditional torsion
Turn fatigue mechanics performance testing device, can realize that motor unidirectional rotary drives sample to fix the fatigue examination that corner back and forth reverses
Test, and light microscope can be combined, the torsional fatigue test for acting on different magnetic field intensity lower material carries out real-time monitored in situ.
In terms of driving, typical crank and rocker mechanism is formed using three disks connected by two axis pins, reaches motor not commutation work
The purpose of lower torsional fatigue load loading, while axis pin installation site can be changed to change rocking bar reciprocally swinging angle.Applying
In terms of magnetic field, which uses cartridge bipolar hair style magnet adjustable in pitch, and magnetic field intensity adjustment control is simple.In overall structure
Aspect, the apparatus structure is compact, and sample can be monitored in real time with integrated optics microscope, realizes to Fine Texture of Material
Pattern change, lattice variations, the dynamic in situ of crack propagation are observed.In conclusion before the present invention has good application, exploitation
Scape, to the development important in inhibiting of material in situ micro mechanical property test technology.
Brief description of the drawings
Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright illustrative example and its explanation is used to explain the present invention, does not form inappropriate limitation of the present invention.
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the partial assembled schematic diagram of the gear unit of the present invention；
Fig. 3 is the stationary fixture partial assembled schematic diagram of the present invention；
The sample that Fig. 4 is the present invention installs partial schematic diagram；
Fig. 5 is the main structure diagram of the present invention；
Fig. 6 is the overlooking the structure diagram of the present invention；
Fig. 7 is the left view structural representation of the present invention；
The loading principle figure of Fig. 8 present invention；
The crank mechanism that Fig. 9 is the present invention adjusts schematic diagram.
In figure：1st, motor encoder；2nd, disc type electric machine；3rd, retarder；4th, electric machine support；5th, motor coupler；6th, encode
Device；7th, supporting rack；8th, disk I；9th, disk II；10th, round end fixture；11st, pressing plate I；12nd, magnetic pole cartridge；13rd, pressing plate II；14、
Fixing end fixture；15th, clamp mount II；16th, connecting shaft；17th, torque sensor；18th, sensor support base；19th, magnet support；
20th, base；21st, clamp mount I；22nd, transmission shaft；23rd, bearing；24th, bearing I；25th, axis pin I；26th, pin shaft II；27th, bearing II；
28th, axle sleeve I；29th, encoder coupler；30th, shaft sleeve II；31st, bearing III；32nd, sample.
Embodiment
The detailed content and its embodiment of the present invention is further illustrated below in conjunction with the accompanying drawings.
Referring to shown in Fig. 1 to Fig. 7, the small-sized torsional fatigue material mechanical property in-situ of controllable magnetic field intensity of the invention is surveyed
Trying instrument includes precision actuation unit, gear unit, grip unit, magnetic field loading unit, detection unit, support unit；Described
Support unit is made of base 20 and bearing, is played a supporting role for instrument other parts；The precision actuation unit passes through
Electric machine support 4 is fixed on 20 side of base, and comprising motor encoder 1, disc type electric machine 2, retarder 3, motor encoder 1, slow down
Device 3 is connected with disc type electric machine 2 respectively, and power is provided for complete machine instrument；The gear unit passes through motor coupler 5 and precision
Driving unit is connected, and is fixed on by bearing 23 on base 20, with motor homonymy；The grip unit is divided into fixing end clamping machine
Structure and round end clamping device two parts, and two be fixed on respectively by clamp mount II 15, clamp mount I 21 on base 20
Side；The magnetic field loading unit is fixed by screws in 20 middle of base；The detection unit includes encoder 6 with turning round
Square sensor 17, encoder 6 are fixed on 23 side of bearing by supporting rack 7, and torque sensor 17 is fixed by sensor support base 18
The side away from motor on base 20.Complete machine uses horizontal type structure, and simple and compact, can act on different magnetic field intensity lower material
Mechanical characteristic that torsional fatigue shows, microstructure morphology, fracture crack carry out real-time monitored in situ.
Referring to shown in Fig. 1 and Fig. 2, the gear unit mainly by transmission shaft 22, disk I 8, disk II 9 and axis pin 25,
26 compositions；Wherein transmission shaft 22 is installed on bearing 23 by a pair of bearings I 24, its thin shaft end passes through motor coupler and precision
Driving unit exports axis connection, its disk end is connected by axis pin I 25, II 26 respectively with disk I 8, disk I 8 with disk II 9, structure
Into crank and rocker mechanism；Key is used respectively by axle sleeve I 28 and clamp spring in 10 axially position of round end fixture in II 9 both sides of disk
It is connected with round end fixture 10 to transmit moment of torsion；In the gear unit, moment of torsion that transmission shaft 22 is transmitted in motor coupler 5
The lower complete cycle revolution of driving, the disk I 8 by playing connecting rod drive disk II 9,10 reciprocating rotary of fixture, the i.e. transmission
The complete cycle rotary motion that unit transmits motor coupler 5, is converted to disk II 9 and drives round end fixture 10 with fixed angle edge
Its axis reciprocating rotary, the loading of torsional fatigue load during so as to fulfill motor Unidirectional.
Referring to shown in Fig. 1, Fig. 2 and Fig. 4, the round end clamping device is made of round end fixture 10 and pressing plate I 11,
Connected by screw and compress sample, both of which processing is fluted to facilitate the clamping of sample 32；The round end fixture 10 is logical
Cross bearing II 27 to be installed on clamp mount I 21, the shaft shoulder and jump-ring slot are machined with round end fixture 10, compressed and justified by clamp spring
Disk II 9, axle sleeve I 28 are positioned bearing II 30.
Referring to shown in Fig. 1, Fig. 3 and Fig. 4, the fixing end clamping device is made of fixing end fixture 14 and pressing plate 13,
Connected by screw and compress sample, both of which processing is fluted to facilitate the clamping of sample 32；The fixing end fixture 14 is logical
Cross bearing III 31 to be installed on clamp mount II 15, the shaft shoulder is machined with fixing end fixture 10, axle sleeve is compressed by connecting shaft 16
II 30 are positioned bearing III 31.
Referring to shown in Fig. 1, Fig. 2 and Fig. 3, the detection unit is made of encoder 6 and torque sensor 17；Wherein compile
Code device 6 is fixed by screws on supporting rack 7, and supporting rack 7 is fixed by screws on bearing 23, and encoder 6 passes through encoder
Shaft coupling 29 is connected with round end fixture 10；During torsional fatigue test, the rotation of round end fixture 10 passes through encoder coupler 29
The rotation of 6 input shaft of encoder is driven, realizes the measurement to the reciprocal deflection angle size of round end fixture and tired cycle.Moment of torsion passes
Sensor 17 is fixed on sensor support base 18, and is connected by screw with connecting shaft 16, and connecting shaft 16 and fixing end fixture 14
By key connection；During torsional fatigue test, fixing end fixture 14 delivers torque to torque sensor 17 by connecting shaft 16, realizes
The measurement of torque in experiment.
Referring to shown in Fig. 1, Fig. 4 and Fig. 8, the magnetic field loading unit is by 19 groups of a pair of of magnetic pole cartridge 12 and magnet support
Into two magnetic pole cartridges 12 are symmetrically arranged in 32 both sides of torsional specimen, realize that complete machine magnetic field loads；At the same time by adjusting magnetic pole cartridge
The thickness that gasket is installed between magnet support changes the spacing d of two magnetic pole cartridges, completes the adjustment of magnetic field intensity residing for sample, real
Experiment under existing different magnetic field intensity effect.
Referring to shown in Fig. 2 and Fig. 9, the transmission shaft 22, disk I 8, disk II 9 are equipped with uniformly distributed pin shaft hole, pass through tune
Whole axis pin I, the mounting hole position of pin shaft II complete the adjusting to crank, connecting rod and rocking bar bar length in crank and rocker mechanism, so as to change
Become the reciprocal deflection angle size of round end fixture, realize the adjusting of the reciprocal deflection angle of torsional fatigue.When selection diverse location
When pin shaft hole connection transmission shaft 22, disk I 8, disk II 9, crank in crank and rocker mechanism, connecting rodAnd rocking barAdjust respectively
It is whole to be、、, realize the adjusting of each bar bar length, so as to change the reciprocal deflection angle size of round end fixture, complete to reverse tired
The adjusting of the reciprocal deflection angle of labor.
Referring to shown in Fig. 1, Fig. 5, Fig. 6 and Fig. 7, the test equipment compact integral structure, size of main body for 296mm ×
80mm × 60mm, and light microscope good compatibility, can real-time monitored bear torsional fatigue under the effect of different magnetic field intensity and carry
The change of the microscopic appearance of material, institutional framework etc. during lotus.
The present invention can carry out the mechanical test that torsional fatigue load loads under magnetic fields, make except different magnetic field intensity is obtained
With in lower torque-torsional angle curve, torsional fatigue curve and experiment outside sample microscopic appearance, moreover it is possible to bent according to moment of torsion-torsional angle is obtained
Line linear stage obtains material shear modulusG, to the sample testing fatigue notch sensitivity of prefabricated notchDetection etc., correlation are closed
Formula is as follows
Shear modulusG
Wherein,For torque increase,For torsional angle increment,For gauge length,For specimen finish；
Mean stress
Stress amplitude
Stress ratior
WhereinFor maximum stress,For minimum stress；
Fatigue notch sensitivity
WhereinFor theoretical stress concentration factor,For fatigue notch factor.
Referring to shown in Fig. 1 to 4 and Fig. 8, specific work process of the invention is as follows：
During on-test, the disc type electric machine 2 for obtaining input electrical signal passes through motor coupler 5 through 3 reduction of speed torque of retarder
Drive transmission shaft 22 to rotate, drive disk II 9 along II 9 axis of disk with solid by disk I 8 based on crank rocker principle transmission shaft 22
Determine angle value reciprocating rotary, disk II 9 drives 32 reciprocating rotary of torsional specimen clamped on round end fixture 10 and fixture, and turns round
Turn sample 32 to clamp through fixing end fixture 14, finally realize the loading of torsional fatigue load；Two cartridges 12 of magnetic field units are right
Title is arranged in 32 both sides of torsional specimen, completes magnetic field loading, strong by distance d changes magnetic field between increasing or reducing two cartridges 12
Degree.Meanwhile the encoded device shaft coupling 29 in 10 thin shaft end of round end fixture drives the rotation of 6 input shaft of encoder, complete back-to-back test is tired
The collection of labor number and the reciprocal angle value of single；Test torque is passed to torque sensing by fixing end fixture 14 by connecting shaft 16
Device 17, completes the collection to test torque size.By varying two bearing pin mounting holes between transmission shaft 22, disk I 8, disk II 9
Position, completes the adjustment of fatigue test sample reciprocating rotary angle value.Complete machine can place under an optical microscope, and sample is first before experiment
Through surface polishing etch, you can realize the in-situ observation to sample microstructure morphology during experiment.
The foregoing is merely the preferred embodiment of the present invention, it is not intended to limit the invention, for the technology of this area
For personnel, the invention may be variously modified and varied.All any modification, equivalent substitution, improvement and etc. made for the present invention,
It should all be included in the protection scope of the present invention.
Claims (7)
- A kind of 1. small-sized torsional fatigue material mechanical property in-situ tester of controllable magnetic field intensity, it is characterised in that：Entirety is adopted With horizontal type structure, including precision actuation unit, gear unit, grip unit, magnetic field loading unit, detection unit；The precision Driving unit passes through electric machine support（4）It is fixed on base（20）Side, includes motor encoder（1）, disc type electric machine（2）, slow down Device（3）, motor encoder（1）, retarder（3）Respectively with disc type electric machine（2）It is connected, power is provided for complete machine instrument；The biography Moving cell passes through motor coupler（5）It is connected with precision actuation unit, by bearing（23）It is fixed on base（20）On, with disc type electricity Machine（2）Homonymy；The grip unit is divided into fixing end clamping device and round end clamping device two parts, and passes through fixture respectively Bearing II（15）, clamp mount I（21）It is fixed on base（20）Both sides；The magnetic field loading unit is fixed by screws in bottom Seat（20）Middle；The detection unit includes encoder（6）With torque sensor（17）, encoder（6）Pass through supporting rack（7） It is fixed on bearing（23）Side, torque sensor（17）Pass through sensor support base（18）It is fixed on base（20）It is upper electric away from disc type Machine（2）Side；The gear unit includes transmission shaft（22）, disk I（8）, disk II（9）And axis pin I, II（25、26）, the transmission Axis（22）Pass through a pair of bearings I（24）It is installed on bearing（23）On, transmission shaft（22）Pass through axis pin I（25）With disk I（8）Even Connect, disk I（8）Pass through pin shaft II（26）With disk II（9）Connection, forms crank and rocker mechanism；The disk II（9）Pass through it The axle sleeve I of both sides（28）And clamp spring is in round end fixture（10）On obtain axially position, and pass through key and round end fixture（10） Connect to transmit moment of torsion；The gear unit is by motor coupler（5）The complete cycle rotary motion of transmission, is converted to disk II（9） Drive round end fixture（10）Along its axis with fixed angle reciprocating rotary, torsional fatigue during so as to fulfill motor Unidirectional The loading of load.
- 2. the small-sized torsional fatigue material mechanical property in-situ tester of controllable magnetic field intensity according to claim 1, its It is characterized in that：The transmission shaft（22）, disk I（8）, disk II（9）Equipped with uniformly distributed pin shaft hole, by adjusting axis pin I （25）, pin shaft II（26）Mounting hole position complete adjusting to crank in crank and rocker mechanism, connecting rod and rocking bar bar length, so as to change Become the reciprocal deflection angle size of round end fixture, realize the adjusting of the reciprocal deflection angle of torsional fatigue.
- 3. the small-sized torsional fatigue material mechanical property in-situ tester of controllable magnetic field intensity according to claim 1, its It is characterized in that：The round end clamping device is by round end fixture（10）And pressing plate I（11）Composition, pressing plate I（11）Pass through spiral shell Nail and round end fixture（10）Connect and compress sample, both are both provided with groove to clamp sample（32）；The round end folder Tool（10）Pass through bearing II（27）It is installed on clamp mount I（21）On, round end fixture（10）On be provided with the shaft shoulder and jump-ring slot, Disk II is compressed by clamp spring（9）, axle sleeve I（28）Make bearing II（27）Positioned.
- 4. the small-sized torsional fatigue material mechanical property in-situ tester of controllable magnetic field intensity according to claim 1, its It is characterized in that：The fixing end clamping device is by fixing end fixture（14）And pressing plate II（13）Composition, pressing plate II（13）Pass through Screw and fixing end fixture（14）Connect and compress sample, both are both provided with groove to clamp sample（32）；The fixing end Fixture（14）Pass through bearing III（31）It is installed on clamp mount II（15）On, fixing end fixture（10）On be machined with the shaft shoulder, pass through Connecting shaft（16）Compress shaft sleeve II（30）Make bearing III（31）Positioned.
- 5. the small-sized torsional fatigue material mechanical property in-situ tester of controllable magnetic field intensity according to claim 1, its It is characterized in that：The magnetic field loading unit is by a pair of of magnetic pole cartridge（12）And magnet support（19）Composition, two magnetic pole cartridges （12）It is symmetrically arranged in sample（32）Both sides, and pass through magnet support（19）It is fixed on base（20）On, realize that complete machine magnetic field adds Carry；Change the spacing of two magnetic pole cartridges by adjusting the thickness for the gasket installed between magnetic pole cartridge and magnet support at the same time, complete The adjustment of magnetic field intensity residing for sample, realizes the experiment under the effect of different magnetic field intensity.
- 6. the small-sized torsional fatigue material mechanical property in-situ tester of controllable magnetic field intensity according to claim 1, its It is characterized in that：The detection unit is by encoder（6）With torque sensor（17）Composition, wherein encoder（6）Pass through coding Device shaft coupling（29）With round end fixture（10）Connection, is realized to the reciprocal deflection angle size of round end fixture and tired cycle Measurement；Torque sensor（17）With connecting shaft（16）It is connected by screw, so as to fulfill to by fixing end fixture（14）Pass through key Pass to connecting shaft（16）The measurement of torque.
- 7. the small-sized torsional fatigue material mechanical property in-situ tester of controllable magnetic field intensity according to claim 1, its It is characterized in that：The size of main body of the small-sized torsional fatigue material mechanical property in-situ tester of the controllable magnetic field intensity is 296mm × 80mm × 60mm, it is compatible with light microscope.
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| CN201610208878.3A CN105758740B (en) | 2016-04-06 | 2016-04-06 | The small-sized torsional fatigue material mechanical property in-situ tester of controllable magnetic field intensity |
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| CN105758740B true CN105758740B (en) | 2018-04-17 |
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