CN205719760U - Prefastening machinery clamping mechanism for the test of combined load material mechanical performance - Google Patents
Prefastening machinery clamping mechanism for the test of combined load material mechanical performance Download PDFInfo
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- CN205719760U CN205719760U CN201620278058.7U CN201620278058U CN205719760U CN 205719760 U CN205719760 U CN 205719760U CN 201620278058 U CN201620278058 U CN 201620278058U CN 205719760 U CN205719760 U CN 205719760U
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Abstract
This utility model relates to a kind of prefastening machinery clamping mechanism for the test of combined load material mechanical performance, belongs to Material Testing Technology field.Utilize the self-locking character of wedge, use wedge firmly beforehand means, make specimen holder reliable, can meet simultaneously stretching, bend, the independent or compound action of the multiple load mode such as torsion time clamping requirement.Carry out conduction of heat heating by silicon nitride heating sheet and specimen holder end two side contacts and change test temperature.Electric field loading is realized by test specimen being passed through controllable current.Realize test specimen is applied magnetic field environment by controlled electromagnet.Physical field and the Combined Loading of mechanical load, make testing of materials test carry out under service condition.Simple and compact for structure, easy to operate, bigger initial clamping force and higher clamping stability can be provided simultaneously, and eliminate the original compression power that pretightning force is brought before test, make test result more accurate, there is the highest using value.
Description
Technical field
This utility model relates to Material Testing Technology field, surveys for combined load material mechanical performance particularly to one
The prefastening machinery clamping mechanism of examination.Clamping to test specimen during for test specimen being applied stretching, bending, torsional load.
Background technology
In practical engineering application, any mechanical part generally takes under the conditions of different physical environments and combined load
Labour, be usually present stretching, compress, reverse, the external force of the multi-form such as bending acts on individually or simultaneously.Such as axial workpiece is simultaneously
Under tension and moment of torsion compound action, bullet train wheel is of a relatively high to temperature in running, is bent simultaneously and turns round
The compound action of square.At aerospace field, in the environment that spacecraft is exposed to magnetic field and temperature field acts on simultaneously, it is subject to simultaneously
Stretching, moment of torsion and bending compound action.Traditional material performance test method, simple by stretching, torsion or single
The single load Material mechanics test carried out under temperature field, can not meet modern new material mechanics under actual operating conditions
The demand of performance test.Therefore, combined load material mechanical performance is utilized to test device to test solid under multiple physical field environment
Material has a great deal of practical meanings close to the mechanical property of service condition.
Common single load grip of testing machine many employings fluid pressure type, directly clamps examination by Hydraulic Cylinder wedge
Part.The usual structure of hydraulic cylinder is complicated, and size is bigger, it is impossible to meet the needs of in-situ observation.In addition, it is desirable to a whole set of hydraulic system carries
For power, inapplicable in the testing machine not using hydraulic loaded mode.In use in hydraulic cylinder oilhole easily by hydraulic pressure
Well cuts blocks, and maintenance process bothers, high to environmental requirement, is unsuitable in hot environment.
Existing mechanical clips provides pulling force by wedge self-locking or provides moment of torsion by threaded pre-tightening, and China is specially
Profit document Publication No. CN200972439 discloses " Cuneate lever-type stretch clamping apparatus " on November 7th, 2007, and it includes wedge shape
Jaw and clamp body, have self-locking action when test specimen stress stretches, it is adaptable to nonmetal small specimen stretching clamping problem.But its merit
Can be single, it is impossible to meet compression test and the demand of combined load load test;Chucking power is little, tests for big tensile force
Journey, test specimen produces relative slip, affects the accuracy of measurement result with fixture.
Analyzing based on above, existing fixture has some limitations, it is impossible to meet being combined under multiple physical field effect
The needs of load material mechanical performance test, therefore, a kind of compact conformation of design, reliable operation, can provide simultaneously bigger at the beginning of
Beginning clamping force and higher clamping stability and to can be used for the clamping device of multiple physical field environment significant, be also simultaneously
The most urgent.
Summary of the invention
The purpose of this utility model is to provide a kind of prefastening machinery for the test of combined load material mechanical performance
Clamping mechanism, solves the problems referred to above that prior art exists.This utility model has simple in construction, clamps reliable feature.
Using prefastening method of clamping, overcome the problem that common lever formula Wedge gripping primary clamp force is little, same set of clamping device can
Meet the material mechanical performance testing experiment that combined load acts on simultaneously, test specimen convenient mounting and clamping.Meanwhile, firmly beforehand means acts on examination
Initial compression force on part, can be compensated by combined load material mechanical performance test device, improve test result
Accuracy, reduces the error that test device is produced by fixture.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions:
For the prefastening machinery clamping mechanism of combined load material mechanical performance test, for test specimen applying is stretched,
Clamping to test specimen when bending, torsional load.Coordinate electric field load-on module, temperature field load-on module, magnetic field load-on module simultaneously
Realize the change to experimental condition, under service condition, carry out material properties test.Including electric field load-on module, temperature
The fixture that load-on module, magnetic field load-on module and a pair structure are identical, a bag in the fixture that the pair of structure is identical
Including water-cooled adpting flange 1, retained part, pre-stressed portion, described retained part, pre-stressed portion and water-cooled adpting flange 1 are by imitative
Clevis concrete 5 connects together, and water-cooled adpting flange 1 is connected by reversing compound sensor with profiling jig 5 and stretching, water
Cold adpting flange 1 and stretching are reversed and are isolated by mica sheet 14 between compound sensor, and reverse composite sensing in contact stretching
One end of device is uniformly coated with high-temperature insulating coating.
Described retained part include profiling jig 5, guide pad 10, guide pad screw 11, clamping wedge 9, axle I 6,
Axle II 16, opening and closing plectrum 7, back-moving spring and pad 8, arrange a pair clamping wedge 9 in described profiling jig 5, in clamping
Wedge 9 is provided with rectangle chute 901 above and with clamping wedge sides aligned parallel, and rectangle chute 901 is convex along guide pad 10
Rising and slide, guide pad 10 is installed in profiling jig 5 by guide pad screw 11;Opening and closing plectrum 7 by axle I 6 and axle II 16 with
Profiling jig 5 connects, and the lever construction being made up of opening and closing plectrum 7, axle I 6, axle II 16 drives two clamping wedges 9 each other
Separately, put into specimen holder end, after unclamping opening and closing plectrum 7, make clamping wedge 9 by the back-moving spring being placed on axle II 16
Reset, clamp test specimen;Utilize the counteracting force that profiling jig 5 provides, produce chucking power.
Described pre-stressed portion includes gripper shoe 3, carrying bolt 2, support sleeve 4, pretension bolt 12, pretension wedge
15, described gripper shoe 3 and support sleeve 4 are fixed on profiling jig 5 by two carrying bolts 2, constitute pretension bolt 12
Support, pretension bolt 12 and gripper shoe 3 constitute a screw thread pair, by rotating pretension bolt 12, drives and is arranged on pretension spiral shell
The pretension wedge 15 of bolt 12 bottom moves up and down, and utilizes the counteracting force of profiling jig 5 that clamping wedge 9 is applied pretension
Power.
Described clamping wedge 9 closes with the matching form of test specimen.
Described profiling jig 5 bottom has two grip block screw chutes 502 being parallel to profiling jig inclined-plane,
Axle I 6 as a fulcrum, constitutes lever with axle II 16, opening and closing plectrum 7 through the axis hole I 503 of profiling jig 5;Bolt passes
The clamp body installing hole 501 of profiling jig 5 and the flange connecting hole 102 of water-cooled adpting flange 1, by profiling jig 5 and water
Cold adpting flange 1 connects.
Described electric field load-on module is: guide pad 10 is simultaneously as electrode, and guide pad screw 11 uses copper screw, two
The guide pad of individual fixture is connected with positive pole and the negative pole of controllable electric power respectively, constitutes closed-loop path after installing test specimen.
Described temperature field load-on module is: two panels silicon nitride heating sheet 13 is fixed on clamping wedge by two screws respectively
On shape block 9, it is fully contacted with specimen holder end and test specimen is carried out conduction heating;Heated by single computer heating control power supply
Temperature sets and controls;The cooling passage 101 of water-cooled adpting flange 1 continues through coolant.
Described magnetic field load-on module is: two electric magnet are perpendicular or parallel to test specimen axis direction and place.
Described pretension wedge 15, gripper shoe 3 use austenitic stainless steel material.
The beneficial effects of the utility model are: compared with prior art, this utility model compact conformation, easy to operate,
Practical.Using prefastening clamping method, pretightning force is adjustable, and clamped one time just can realize dissimilar load or combined load
Material mechanical performance is tested.Clamping is reliable, can provide bigger initial clamping force and higher clamping stability simultaneously, and in test
Eliminate the original compression power that pretightning force is brought before, substantially increase the accuracy of test result.In different physical field environment,
Reduce the environment impact on sensor data acquisition, it is thus achieved that material at mechanical property parameters more accurately under service condition,
The engineer applied of testing of materials there is great significance.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes the part of the application,
Illustrative example of the present utility model and explanation thereof are used for explaining this utility model, are not intended that improper limit of the present utility model
Fixed.
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is profile of the present utility model;
Fig. 3 is the structural representation of water-cooled adpting flange of the present utility model;
Fig. 4 is the structural representation of profiling jig of the present utility model;
Fig. 5 is the structural representation of pre-stressed portion of the present utility model;
Fig. 6 is the structural representation of clamping wedge of the present utility model;
Fig. 7,8 it is the structural representation of the other two kinds of forms of clamping wedge of the present utility model;
Fig. 9 is the schematic diagram of pre-tension method of the present utility model;
Figure 10 is that initial compression force of the present utility model eliminates flow chart;
Figure 11 is electric field loading principle schematic diagram of the present utility model;
Figure 12 is temperature field of the present utility model loading principle schematic diagram;
Figure 13 is magnetic field of the present utility model loading principle schematic diagram.
In figure: 1, water-cooled adpting flange;101, cooling passage;102, flange connecting hole;2, carrying bolt;3, support
Plate;4, supporting sleeve;5, profiling jig;501, clamp body connecting hole;502, grip block screw chute;503, axis hole I;6, axle
Ⅰ;7, opening and closing plectrum;8, pad;9, clamping wedge;901, rectangle chute;902, axis hole II;10, guide pad;11, guide
Block screw;12, pretension bolt;13, silicon nitride heating sheet;14, mica sheet;15, pretension wedge;16;Axle II.
Detailed description of the invention
Further illustrate detailed content of the present utility model and detailed description of the invention thereof below in conjunction with the accompanying drawings.
See shown in Fig. 1 to Figure 13, the prefastening machine for the test of combined load material mechanical performance of the present utility model
Tool clamping mechanism, including electric field load-on module, temperature field load-on module, magnetic field load-on module, fixture that a pair structure is identical, institute
State one in a pair identical fixture of structure and include water-cooled adpting flange 1, retained part, pre-stressed portion, described retained part,
Pre-stressed portion is connected together by profiling jig 5 with water-cooled adpting flange 1, and compact conformation reduces the whole of clamping device
Body size.Water-cooled adpting flange 1 is connected, at different temperatures environment by reversing compound sensor with profiling jig 5 and stretching
In lower material mechanical performance testing experiment, make stretching reverse compound sensor and have been under the operating temperature being suitable for, reduce temperature
The degree impact on sensor acquisition data.Water-cooled adpting flange 1 and stretching are reversed between compound sensor by certain thickness
Mica sheet 14 is isolated, and is uniformly coated with high-temperature insulating coating, at electric field environment in one end of contact stretching torsion compound sensor
Under carry out in material mechanical performance testing experiment, protection sensor and whole test device not by electric jamming.
See shown in Fig. 6 and Fig. 7, described retained part include profiling jig 5, guide pad 10, guide pad screw 11,
Clamping wedge 9, axle I 6, axle II 16, opening and closing plectrum 7, back-moving spring and pad 8, arrange a pair folder in described profiling jig 5
Hold wedge 9, and be provided with rectangle chute 901, rectangle chute 901 with clamping wedge sides aligned parallel on clamping wedge 9
Along the protruding slip of guide pad 10, guide pad 10 is installed in profiling jig 5 by guide pad screw 11;Opening and closing plectrum 7 leads to
Cross axle I 6 and axle II 16 is connected with profiling jig 5, and be respectively provided with pad between axle I 6, axle II 16 and profiling jig 5
8;The lever construction being made up of opening and closing plectrum 7, axle I 6, axle II 16 drives two clamping wedges 9 to be separated from each other, and puts into test specimen folder
Hold end, after unclamping opening and closing plectrum 7, make clamping wedge 9 reset, clamp test specimen by the back-moving spring being placed on axle II 16;
Utilize the counteracting force that profiling jig 5 provides, produce chucking power.
Seeing shown in Fig. 5 and Fig. 6, described pre-stressed portion includes gripper shoe 3, carrying bolt 2, support sleeve 4, pretension spiral shell
Bolt 12, pretension wedge 15, described gripper shoe 3 and support sleeve 4 are fixed on profiling jig 5 by two carrying bolts 2,
Constituting the support of pretension bolt 12, pretension bolt 12 and gripper shoe 3 constitute a screw thread pair, by rotating pretension bolt 12, and band
The dynamic pretension wedge 15 being arranged on pretension bolt 12 bottom moves up and down, and utilizes the counteracting force of profiling jig 5 to clamping
Wedge 9 applies pretightning force, makes clamping wedge 9 clamp, so carrying bolt 2 and gripper shoe 3 bear the least counteracting force.
Meanwhile, utilize spanner just can apply pretightning force, convenient and strength-saving.
Shown in Figure 5, at profiling jig 5 upper surface, the screwed hole of two M6 is bored in the direction vertical with test specimen.To prop up
Fagging 3 and support sleeve 4 are fixed on clamp body by two carrying bolts 2, constitute the support of pretension bolt 12.In gripper shoe
Bore the screwed hole of M10 on 3, rotate pretension bolt 12, drive pretension wedge 15 to move up and down, thus regulate the pretightning force of applying
Size.Along with pretension wedge 15 constantly moves down, utilize inclined-plane and the clamp body self of wedge, make clamping wedge 9
Constantly clamp test specimen.
Seeing shown in Fig. 6 to Fig. 8, described clamping wedge 9 closes with the matching form of test specimen, and optional multi-form becomes
To replacement, for plate test coupon, optional plane clamping wedge;For cylinder specimen, optional semicircle cambered surface clamping wedge
Shape block.For the test specimen of different bare terminal ends, change fixture convenient.
Seeing shown in Fig. 3 and Fig. 4, described profiling jig 5 bottom has two and is parallel to profiling jig inclined-plane
Grip block screw chute 502, axle I 6 through the axis hole I 503 of profiling jig 5 as a fulcrum, with axle II 16, opening and closing plectrum
7 constitute lever;Bolt passes clamp body installing hole 501 and the flange connecting hole 102 of water-cooled adpting flange 1 of profiling jig 5,
Profiling jig 5 is connected with water-cooled adpting flange 1, convenient and reliable;Profiling jig 5 removes excess stock, reduces many as far as possible
Remaining size, removes unnecessary corner angle and makees chamfered.Retained part and pre-stressed portion are integrated on same clamp body, and structure is tight
Gather.
Described electric field load-on module is: guide pad 10 is simultaneously as electrode, and guide pad screw 11 uses copper screw, two
The guide pad of individual fixture is connected with positive pole and the negative pole of controllable electric power respectively, constitutes closed-loop path after installing test specimen.
Described temperature field load-on module is: two panels silicon nitride heating sheet 13 is fixed on clamping wedge by two screws respectively
On shape block 9, it is fully contacted with specimen holder end and test specimen is carried out conduction heating;Heated by single computer heating control power supply
Temperature sets and controls;The cooling passage 101 of water-cooled adpting flange 1 continues through coolant, and at water-cooled adpting flange 1
With stretching reverses and place certain thickness mica sheet 14 between compound sensor and increase thermograde, reduce thermal conduction rate, subtract
Few temperature impact on tension-torsion compound sensor.
Described magnetic field load-on module is: the electric magnet of two specific customization, perpendicular or parallel according to different tests condition
Place in test specimen axis direction.
Described profiling jig 5, clamping wedge 9, guide pad 10, pretension wedge 15, gripper shoe 3 use austenite
Stainless steel, reduces the magnetic field impact on result of the test.
Shown in Figure 10, the removing measures of the initial compression force that this utility model brings after applying pretightning force is as follows:
Step 1: start preheating also opens test apparatus control program software;
Step 2: click-sensor reset button;
Step 3: install test specimen pretension;
Step 4: stretching motor powers on, and stretches with speed slowly, until tensile force sensor registration is to stop when zero
Only;
Step 5: starting material Mechanics Performance Testing is tested.
As shown in Figure 6, existing analysis is vertical direction applies pretightning force F to the principle of pre-stressed portion when, and horizontal direction is tried
Pretightning force R that part is subject to is much.F is to act on the power on pretension wedge by pretension bolt;If F1 is pretension wedge
Active force to clamp body;F2 is the pretension wedge active force to clamping wedge;R be pretension wedge in the horizontal direction
Active force to clamping wedge.θ 1 is the angle of friction of pretension wedge and clamp body contact surface;θ 2 is pretension wedge and folder
Hold the angle of friction between wedge.
The equilibrium equation of horizontal direction is:
(1)
Thus,
(2)
The equilibrium equation of vertical direction is:
(3)
Formula (2) is substituted into formula (3), after arrangement
(4)
Therefore, (5)
(6)
Formula (5) is substituted into formula (6),
(7)
When θ 1 and θ 2 is fixed value, F is the biggest, and R is the biggest.And, 01 at 0 ° of θ 1, during θ 2 90 °
Set up.Therefore use this firmly beforehand means, make the pretightning force acting on vertical direction obtain when being delivered on the test specimen of horizontal direction
Amplify, it is possible to achieve pretension reliable to test specimen clamps, meet design requirement.
In view of while applying pretightning force, the initial compression stress to test specimen can be introduced before starting test.Therefore
Need before testing to carry out stress relieving, utilize the control system of combined load material mechanical performance testing experiment machine, at the beginning of elimination
The control flow chart of beginning compression stress is as shown in Figure 10.
As shown in Figures 7 and 8, axle II 14 is arranged in axis hole II 902 described clamping wedge, when stirring opening and closing plectrum
Time, axle II drives clamping wedge separately.Back-shaped spring is installed on axle II, clamping wedge self-resetting can be made.Clamping wedge
Shape block includes that various ways, to adapt to difform bare terminal end, depicts groove with increasing friction force at clamping face, such as Fig. 7 institute
Show.
Described water-cooled adpting flange 1 one end is connected with clamp body by the screw thread of M10, the other end pass through 6 uniform
Hole is connected with tension-torsion sensor.Between water-cooled adpting flange and tension-torsion sensor place insulation spacer, protection sensor not by
Electric field environment damages and avoids in test process the impact measuring numerical value.Enough spaces are left between two fixtures,
So that test specimen is applied magnetic field environment.
In described electric field load-on module, guide pad 10 uses copper screw simultaneously as electrode, guide pad screw.Two
The guide pad of fixture is connected with positive pole and the negative pole of controllable electric power respectively, constitutes closed-loop path after installing test specimen.Connect in water-cooled
Spissatus master slice is utilized to insulate between flange and sensor.
Described temperature field load-on module is fixed on clamping wedge by two screws respectively by two panels silicon nitride heating sheet 13
On shape block 9, it is fully contacted with specimen holder end and test specimen is carried out conduction heating.Heated by single computer heating control power supply
Temperature sets and controls.Water-cooled adpting flange 1 continues through coolant, and places between water-cooled adpting flange and sensor
Certain thickness micarex 14 increases thermograde, reduces thermal conduction rate, reduces the temperature impact on tension-torsion compound sensor.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for ability
For the technical staff in territory, this utility model can have various modifications and variations.All this utility model is made any amendment,
Equivalent, improvement etc., within should be included in protection domain of the present utility model.
Claims (10)
1. the prefastening machinery clamping mechanism for the test of combined load material mechanical performance, it is characterised in that: include electricity
The fixture that load-on module, temperature field load-on module, magnetic field load-on module and a pair structure are identical, the pair of structure is identical
In fixture one includes water-cooled adpting flange (1), retained part, pre-stressed portion, described retained part, pre-stressed portion and water-cooled
Adpting flange (1) is connected together by profiling jig (5), water-cooled adpting flange (1) by with profiling jig (5) and drawing
Stretch torsion compound sensor to connect, water-cooled adpting flange (1) and stretching reverse between compound sensor by mica sheet (14) every
From, and it is uniformly coated with high-temperature insulating coating in one end of contact stretching torsion compound sensor.
Prefastening machinery clamping mechanism for the test of combined load material mechanical performance the most according to claim 1, its
It is characterised by: described retained part includes profiling jig (5), guide pad (10), guide pad screw (11), clamping wedge
(9), axle I (6), axle II (16), opening and closing plectrum (7), back-moving spring and pad (8), described profiling jig arranges a pair in (5)
Clamping wedge (9), clamping wedge (9) above with clamping wedge sides aligned parallel be provided with rectangle chute (901), rectangle
Chute (901) is along the protruding slip of guide pad (10), and guide pad (10) is arranged on profiling jig by guide pad screw (11)
In body (5);Opening and closing plectrum (7) is connected with profiling jig (5), by opening and closing plectrum (7), axle I by axle I (6) and axle II (16)
(6), the lever construction that forms of axle II (16) drive two clampings wedge (9) to be separated from each other, put into specimen holder end, unclamp
After closing plectrum (7), clamping wedge (9) is made to reset, clamp test specimen by the back-moving spring being placed on axle II (16);Utilize imitative
The counteracting force that clevis concrete (5) provides, produces chucking power.
Prefastening machinery clamping mechanism for the test of combined load material mechanical performance the most according to claim 1, its
It is characterised by: described pre-stressed portion includes gripper shoe (3), carrying bolt (2), support sleeve (4), pretension bolt (12), pre-
Tight wedge (15), described gripper shoe (3) and support sleeve (4) are fixed on profiling jig (5) by two carrying bolts (2)
On, constitute the support of pretension bolt (12), pretension bolt (12) and gripper shoe (3) and constitute a screw thread pair, by rotating pretension
Bolt (12), drives the pretension wedge (15) being arranged on pretension bolt (12) bottom to move up and down, utilizes profiling jig (5)
Counteracting force to clamping wedge (9) apply pretightning force.
Prefastening machinery clamping mechanism for the test of combined load material mechanical performance the most according to claim 3, its
It is characterised by: described clamping wedge (9) closes with the matching form of test specimen.
5. according to the prefastening machinery clamping machine for the test of combined load material mechanical performance described in claim 1 or 2 or 3
Structure, it is characterised in that: described profiling jig (5) bottom has two grip block screws being parallel to profiling jig inclined-plane
Chute (502), axle I (6) through the axis hole I (503) of profiling jig (5) as a fulcrum, with axle II (16), opening and closing plectrum
(7) lever is constituted;Bolt connects through the clamp body installing hole (501) of profiling jig (5) and the flange of water-cooled adpting flange (1)
Connect hole (102), profiling jig (5) is connected with water-cooled adpting flange (1).
Prefastening machinery clamping mechanism for the test of combined load material mechanical performance the most according to claim 1, its
It is characterised by: described electric field load-on module is: guide pad (10) uses copper spiral shell simultaneously as electrode, guide pad screw (11)
Nail, the guide pad of two fixtures is connected with positive pole and the negative pole of controllable electric power respectively, constitutes closed-loop path after installing test specimen.
Prefastening machinery clamping mechanism for the test of combined load material mechanical performance the most according to claim 1, its
It is characterised by: described temperature field load-on module is: two panels silicon nitride heating sheet (13) is fixed on folder by two screws respectively
Hold on wedge (9), be fully contacted with specimen holder end and test specimen is carried out conduction heating;Entered by single computer heating control power supply
Row heating-up temperature sets and controls;The cooling passage (101) of water-cooled adpting flange (1) continues through coolant.
Prefastening machinery clamping mechanism for the test of combined load material mechanical performance the most according to claim 1, its
It is characterised by: described magnetic field load-on module is: two electric magnet are perpendicular or parallel to test specimen axis direction and place.
Prefastening machinery clamping mechanism for the test of combined load material mechanical performance the most according to claim 2, its
It is characterised by: described profiling jig (5), clamping wedge (9), guide pad (10) use austenitic stainless steel material.
Prefastening machinery clamping mechanism for the test of combined load material mechanical performance the most according to claim 3, its
It is characterised by: described pretension wedge (15), gripper shoe (3) use austenitic stainless steel material.
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CN105890979A (en) * | 2016-04-06 | 2016-08-24 | 吉林大学 | Pre-tightening type mechanical clamping mechanism for combined load material mechanical property testing |
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2016
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CN105890979A (en) * | 2016-04-06 | 2016-08-24 | 吉林大学 | Pre-tightening type mechanical clamping mechanism for combined load material mechanical property testing |
CN105890979B (en) * | 2016-04-06 | 2018-07-06 | 吉林大学 | For the prefastening machinery clamping mechanism of combined load material mechanical performance test |
CN111562173A (en) * | 2020-05-29 | 2020-08-21 | 济南大学 | Friction wear tester clamp |
CN111562173B (en) * | 2020-05-29 | 2023-04-07 | 济南大学 | Friction wear tester clamp |
CN113758726A (en) * | 2021-09-23 | 2021-12-07 | 同济大学 | Automobile disc brake performance test system and method based on multi-source load loading |
CN117330402A (en) * | 2023-11-27 | 2024-01-02 | 合肥工业大学 | Replaceable electric auxiliary stretching clamp and application method thereof |
CN117330402B (en) * | 2023-11-27 | 2024-02-23 | 合肥工业大学 | Replaceable electric auxiliary stretching clamp and application method thereof |
CN117433936A (en) * | 2023-12-19 | 2024-01-23 | 中航试金石检测科技(成都)有限公司 | Small sample low cycle fatigue testing device |
CN117433936B (en) * | 2023-12-19 | 2024-04-05 | 中航试金石检测科技(成都)有限公司 | Small sample low cycle fatigue testing device |
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