CN107314935B - A kind of double drawing experimental rigs of universal testing machine change load ratio of gear structure formula - Google Patents
A kind of double drawing experimental rigs of universal testing machine change load ratio of gear structure formula Download PDFInfo
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- CN107314935B CN107314935B CN201710623586.0A CN201710623586A CN107314935B CN 107314935 B CN107314935 B CN 107314935B CN 201710623586 A CN201710623586 A CN 201710623586A CN 107314935 B CN107314935 B CN 107314935B
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- 238000012360 testing method Methods 0.000 title claims abstract description 69
- 238000003825 pressing Methods 0.000 claims description 37
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
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- 238000009826 distribution Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000001558 permutation test Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000009864 tensile test Methods 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000005674 electromagnetic induction Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 239000010962 carbon steel Substances 0.000 description 1
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- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of universal testing machines of gear structure formula to become the double drawing experimental rigs of load ratio, including fixed bottom plate and direct acting rotating device；The fixed bottom plate is equipped with vertical side plate, solar wheeling tooth wheel shaft support base and multiple bed bolt holes connecting with stretching-machine fixing end, four planetary gear mounting holes that the vertical side plate is equipped with solar wheeling tooth wheel shaft mounting hole and is distributed using the axis of the solar wheeling tooth wheel shaft mounting hole as axial cross；The rear wall of the vertical side plate is equipped with sliding slot group corresponding with the planetary gear mounting hole, sliding slot group the radially extending along the solar wheeling tooth wheel shaft mounting hole axis, and the sliding slot group is equipped with rack gear linkage clamp.The advantages that present invention has structure simple, easy to use, and economy uses, can guarantee the acquisition of exact test result.
Description
Technical field
The present invention relates to the mechanics of materials and performance study technical field, specifically a kind of omnipotent examination of gear structure formula
It tests machine and becomes the double drawing experimental rigs of load ratio.
Background technique
Currently, sheet metal formability majority is qualitatively evaluated using one directional tensile test.But due to simple tension
Test can not detect linear, plate under Nonlinear loading path elastoplasticity formed features and fracture rule on different directions simultaneously
Rule, and is a complicated load path for the Sheet Metal Forming Technology of auto parts and components, only rely on uniaxial tensile test be it is obvious not
No more, therefore, it is necessary to carry out biaxial tensile test to plate to simulate the sheet metal deformation process in practical punching course.
However, double drawing testing equipments are expensive, experimentation cost is very high.And uniaxial tensile test equipment cost is relatively low, answers
With wide, it is badly in need of a kind of to carry out double devices for drawing test using universal testing machine is uniaxially stretched thus.Patent
(CN87205653, mechanical biaxial tension tester) disclose it is a kind of using the structures such as Universal-head, hinge and buffer spring and
Realize the double tests for drawing test of plate, but the buffer spring of the tester is less than normal by the data for causing load cell to measure；Specially
Benefit (CN201610146635, a kind of strength test fixture carrying out control with changed scale Biaxial stress using single axis test machines) passes through lever
Principle realizes the biaxial tension-compression strengths of a variety of load ratios of plate, and the stability of lever construction during loading is difficult to essence
Ensure to demonstrate,prove；Patent (CN201010240086, the mechanical biaxial tension tester of control with changed scale load) utilizes workbench, diagonal brace
The structures such as bar, tension-compression sensor and collet realize that the plate of different load ratios is double and draw test, but because hound and horizontal plane
Angle have limited angular range, load stroke range be restricted；Patent (CN200810017989, two-way drawing
Stretch experimental rig) and a kind of patent (CN201710187880, two-way cross tensile test device), two patents can be achieved not
With double drawings test of load ratio, it is proposed the mountable two-way stretch device on universal testing machine, but it loads ratio
Range is also very limited, the former needs the support plate by repeatedly replacing different length, and it is lateral to change test specimen by replacement support plate
The load ratio longitudinally born, to realize the stretching displacement of different load ratios；Although and the latter can be by heating exemplar
Realize high temperature load, but its limited load proportional region that only can be realized 1:1-1:4.Based on this, the invention proposes one kind
New gear structure formula device is tested to complete double draw of change load ratio of plate on universal testing machine under different temperatures, with very
Make up drawbacks described above well.
Summary of the invention
At high cost and existing universal testing machine is double according to present in the double drawing testing equipments of tradition set forth above loads
Structure is complicated existing for setting, realizes that change load ratio is cumbersome, cannot achieve biggish control with changed scale load and cannot achieve not
The problems such as synthermal condition test, and one kind is proposed based on gear structure, for sheet metal in large temperature range, in list
Axis, which stretches, carries out double drawing tests on universal testing machine, draw in test the experimental rig, it can be achieved that different load ratios double.This hair
Relationship and stretching-machine loading velocity is engaged with rack, it can be achieved that cross in the bright number of teeth by changing the driven gear, driven gear
Variation to/longitudinal larger range load ratio；Opposite confined space is wrapped up with alumina silicate fiber felt, by carrying out electricity to test specimen
Magnetic induction heating, also can be used the small-sized absorption type heater such as ceramic heater and is heated, realize and try under different temperatures
The change load ratio of part is double to draw test, and this patent proposes that the new gear structure of one kind tests process, tool to complete double drawings of test specimen
There are the advantages such as the range for becoming load ratio is larger, load is stable, easy to operate, cost performance with higher.What the present invention used
Technological means is as follows:
A kind of double drawing experimental rigs of universal testing machine change load ratio of gear structure formula, including fixed bottom plate and direct acting
Rotating device；
The fixed bottom plate is equipped with vertical side plate, solar wheeling tooth wheel shaft support base and multiple connect with stretching-machine fixing end
Bed bolt hole, the vertical side plate is equipped with solar wheeling tooth wheel shaft mounting hole and with the solar wheeling tooth wheel shaft mounting hole
Axis is four planetary gear mounting holes of axial cross distribution, and the solar wheeling tooth wheel shaft support base is equipped with and the sun gear
The coaxial solar wheeling tooth wheel shaft connecting hole of gear shaft mounting hole, the solar wheeling tooth wheel shaft mounting hole are located at the vertical side plate
On front side wall；
Solar wheeling tooth wheel shaft, institute are equipped between the solar wheeling tooth wheel shaft mounting hole and the solar wheeling tooth wheel shaft connecting hole
It states and is socketed with sun gear on solar wheeling tooth wheel shaft, the planetary gear mounting hole is equipped with planetary gear, the planetary gear packet
Planetary gear shaft is included, one end of the planetary gear shaft is equipped with the driving gear engaged with the sun gear, the star gear shaft
The other end pass through the planetary gear mounting hole connect with a driven gear, the planetary gear shaft and the planetary gear peace
Fill hole rotation connection；
The rear wall of the vertical side plate is equipped with sliding slot group corresponding with the planetary gear mounting hole, the sliding slot
Group is radially extended along the solar wheeling tooth wheel shaft mounting hole axis, and the sliding slot group is equipped with rack gear linkage clamp, the tooth
Linkage clamp has the rack gear engaged with the driven gear, and the rack gear linkage clamp is far from the sliding slot connected to it
The side wall of the side of group has clip groove, and side cell wall of the clip groove towards the solar wheeling tooth wheel shaft mounting hole axis is spacious
It opens, the clip groove is equipped with matched fixture cover board, and power is equipped between the fixture cover board and the clip groove and is passed
Sensor can not only measure the clamping force to test specimen, but also can measure the pulling force applied when test.
The setting of the clip groove facilitates the insertion and limit of test specimen fixing end.
The fixture cover board is bolted with the rack gear linkage clamp；
The direct acting rotating device includes connector, driving disc spacing pressing and connecting rod；
The solar wheeling tooth wheel shaft passes through the solar wheeling tooth wheel shaft connecting hole and connect with the driving disc spacing pressing, the sun gear
Gear shaft, the sun gear and the driving disc spacing pressing are coaxial, are uniformly distributed using the axis of the driving disc spacing pressing as axis on the driving disc spacing pressing
There are multiple driving disc spacing pressing bolts hole, the both ends of the connecting rod are cut with scissors with the connector and one of them described driving disc spacing pressing bolt hole respectively
It connects, the ring flange connecting with stretching-machine mobile terminal is additionally provided on the connector；
Under working condition, stretching-machine mobile terminal drives the active disc spins by the connector and the connecting rod, in turn
Rack gear linkage clamp described in the sun gear, the planetary gear and the rack drives is driven to pacify along the solar wheeling tooth wheel shaft
Fill the radially outward sliding of axially bored line.
The experimental rig further includes sealing cover；
It is described solid corresponding to the sealing cover, the rear wall of the vertical side plate and rear wall with the vertical side plate
The upper surface for determining bottom plate constitutes an opposite confined space, and the opposite confined space is wrapped with the alumina silicate for insulation
Fibrofelt is equipped with the heating device for test specimen heating in the opposite confined space, to realize room temperature to 1200 DEG C of not equalities of temperature
Double drawings test under degree.
The sealing cover is process by transparent heat-insulated material, can understand the situation for observing test specimen, convenient for discovery in time
And handle problem.
The heating device is the electromagnetic induction coil being wrapped on test specimen or the ceramic heater that is adsorbed on test specimen.It is logical
It crosses and test specimen is heated, double draw of change load ratio realized under different temperatures (room temperature is to 1200 DEG C) is tested.
The bed bolt hole is located at the fixed bottom parts corresponding to the front side wall of the vertical side plate.
The sliding slot group includes the long sliding slot and short groove positioned at the planetary gear two sides of mounting hole corresponding thereto,
The long sliding slot and the short groove are T-slot, guarantee the rack gear linkage clamp stable motion wherein, and described long sliding
Slot is different with the short groove length, to avoid the interference under test situation；
One end far from the solar wheeling tooth wheel shaft mounting hole axis of the long sliding slot and the short groove all extends to
The end of the vertical side plate；
The rack gear extends perpendicularly to the rack gear linkage clamp towards the solar wheeling tooth wheel shaft mounting hole axis
The side wall of the side of line, the rack gear linkage clamp are equipped with the long cunning for extending to the rack gear and matching with the long sliding slot
Item and the short draw runner to match with the short groove.
The driven gear and the planetary gear shaft releasable connection are changed by changing the number of teeth of the driven gear
The meshing relation of itself and the rack gear can make rack gear linkage clamp with the speed movement of 0.5-5 times of driving gear revolving speed.Due to
The driven gear and the planetary gear shaft are releasable connection, facilitate the disassembly of the driven gear, by installing different teeth
Several driven gears changes the meshing relation for the rack gear that the driven gear engages, then is stretched by changing
Machine loading velocity is, it can be achieved that laterally/longitudinal larger range loads the variation of ratio.
The solar wheeling tooth wheel shaft support base includes left branching rod and right strut, the upper end of the left branching rod and the right strut
Connect respectively with the solar wheeling tooth wheel shaft connecting hole, the lower end of the left branching rod and the right strut respectively with the fixed bottom
Plate connection, the left branching rod, the right strut and the fixed bottom plate constitute a three-legged structure.The solar wheeling tooth wheel shaft is located at
It between the solar wheeling tooth wheel shaft mounting hole and the solar wheeling tooth wheel shaft connecting hole, plays a supportive role, avoids test process
The vibration and distortion of middle solar wheeling tooth wheel shaft.
The fixed bottom plate, the vertical side plate and the solar wheeling tooth wheel shaft support base are structure as a whole or process respectively
After be spliced；
The material of the experimental rig is depending on experimental condition, for example, the fixed bottom plate, the vertical side plate and institute
The material for stating solar wheeling tooth wheel shaft support base is H13 hot die steel, to meet at large temperature range (room temperature is to 1200 DEG C)
Inside tested, when carrying out that constant temperature at 400 DEG C or 800 DEG C is double to draw test to certain high-strength steel test specimens, processed with tungsten carbide described in
Rack gear linkage clamp and the fixture cover board, the connecting rod, the driving disc spacing pressing, the solar wheeling tooth wheel shaft, the sun gear and
The planetary gear is process using medium carbon steel.In the present invention setting of each bolt hole can both make the experimental rig with it is omnipotent
Position accurate positioning between testing machine, fixture and test specimen, and can meet the needs of securely assembling.
With the connecting rod initial position of the hinged driving disc spacing pressing bolt hole be above-mentioned driving disc spacing pressing bolt hole axis with
The line of the axis of the driving disc spacing pressing and the angle α of vertical direction meet:
0 α≤360 ° </n；
Wherein, n is the number of the driving disc spacing pressing bolt hole.
The initial position guarantees the biggish displacement of experimental rig.
The driven gear and the rack gear linkage clamp, the test specimen are located at the same side of the vertical side plate, are convenient for
Disassembly and replacement.
Compared with the prior art, the invention has the following advantages that
(1) it is linear, Nonlinear loading path two-way to can be realized the completion plate on uniaxial universal testing machine by the present invention
Tension test, structure is simple, and economy is convenient.
(2) each component of the present invention uses gear structure formula, and structure is simple, and precision is high, and stability is good, save processing and manufacturing at
This.
(3) relationship is engaged with rack by the number of teeth of change driven gear, driven gear in the present invention and stretching-machine loads speed
Degree is, it can be achieved that double draw of change load ratio in a big way is tested.
(4) it is equipped with the heating device for test specimen heating in opposite confined space of the invention, realizes under different temperatures
Change load ratio double draw test.
(5) present invention can choose suitable material and process each component, meet under different temperatures according to different experimental conditions
Become the requirement of load ratio biaxial tensile test.
The advantages that present invention has structure simple, easy to use, and economy uses, can guarantee obtaining for exact test result
It takes.The present invention can be widely popularized in the mechanics of materials and performance study field based on the above reasons.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the knot that bottom plate, vertical side plate and solar wheeling tooth wheel shaft support base are fixed in a specific embodiment of the invention
Structure schematic diagram.
Fig. 2 is the structural schematic diagram of direct acting rotating device in a specific embodiment of the invention.
Fig. 3 is a specific embodiment of the invention middle gear running part schematic diagram.
Fig. 4 is the explosive view of a specific embodiment of the invention middle rack linkage clamp, fixture cover board and force snesor.
Fig. 5, which is that a kind of universal testing machine change load ratio of gear structure formula is double in a specific embodiment of the invention, draws examination
The assembling schematic diagram of experiment device.
Fig. 6 is each structural schematic diagram in a specific embodiment of the invention on the rear wall of vertical side plate.
Fig. 7, which is that a kind of universal testing machine change load ratio of gear structure formula is double in a specific embodiment of the invention, draws examination
Use state diagram under experiment device room temperature.
Fig. 8, which is that a kind of universal testing machine change load ratio of gear structure formula is double in a specific embodiment of the invention, draws examination
Use state diagram under experiment device high temperature
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As Figure 1-Figure 8, a kind of universal testing machine of gear structure formula becomes the double drawing experimental rigs of load ratio, including solid
Determine bottom plate 1 and direct acting rotating device；
The fixed bottom plate 1 is equipped with vertical side plate 2, solar wheeling tooth wheel shaft support base and six and stretching-machine fixing end and connects
The bed bolt hole 3 connect, the solar wheeling tooth wheel shaft support base include left branching rod 4 and right strut 5, the left branching rod 4 and described
The upper end of right strut 5 is connect with solar wheeling tooth wheel shaft connecting hole 6 respectively, the lower end difference of the left branching rod 4 and the right strut 5
It is connect with the fixed bottom plate 1, the left branching rod 4, the right strut 5 and the fixed bottom plate 1 constitute a three-legged structure.
The bed bolt hole 3 is located at fixed 1 part of bottom plate corresponding to the front side wall of the vertical side plate 2 and is in
Annular is uniformly distributed.
The vertical side plate 2 is equipped with solar wheeling tooth wheel shaft mounting hole 7 and with the axis of the solar wheeling tooth wheel shaft mounting hole 7
Line is four planetary gear mounting holes 8 of axial cross distribution, the solar wheeling tooth wheel shaft connecting hole 6 and the solar wheeling tooth wheel shaft
Mounting hole 7 is coaxial, and the solar wheeling tooth wheel shaft mounting hole 7 is located on the front side wall of the vertical side plate 2；
Solar wheeling tooth wheel shaft is equipped between the solar wheeling tooth wheel shaft mounting hole 7 and the solar wheeling tooth wheel shaft connecting hole 6
9, sun gear 10 is socketed on the solar wheeling tooth wheel shaft 9, the planetary gear mounting hole 8 is equipped with planetary gear, the row
Star gear includes planetary gear shaft 11, and one end of the planetary gear shaft 11 is equipped with the driving gear engaged with the sun gear 10
12, the other end of the planetary gear shaft 11 passes through the planetary gear mounting hole 8 and connect with a driven gear 13, the planet
Gear shaft 11 and the planetary gear mounting hole 8 rotation connect；
The rear wall of the vertical side plate 2 is equipped with sliding slot group corresponding with the planetary gear mounting hole 8, the cunning
Slot group is radially extended along 7 axis of solar wheeling tooth wheel shaft mounting hole, and the sliding slot group is equipped with rack gear linkage clamp 14, institute
Stating rack gear linkage clamp 14 has the rack gear 15 engaged with the driven gear 13, and the rack gear linkage clamp 14 is separate to be connected with it
The side wall of the side of the sliding slot group connect has clip groove 16, and the clip groove 16 is towards the solar wheeling tooth wheel shaft mounting hole
The side cell walls of 7 axis opens wide, and the clip groove 16 is equipped with matched fixture cover board 17, the fixture cover board 17 with
Force snesor 18,18 external wire 32 of force snesor are equipped between the clip groove 16；
The direct acting rotating device includes connector 19, driving disc spacing pressing 20 and connecting rod 21；
The solar wheeling tooth wheel shaft 9 pass through the solar wheeling tooth wheel shaft connecting hole 6 connect with the driving disc spacing pressing 20, it is described too
Positive gear teeth wheel shaft 9, the sun gear 10 and the driving disc spacing pressing 20 are coaxial, with the axis of the driving disc spacing pressing 20 on the driving disc spacing pressing 20
Be evenly distributed with eight driving disc spacing pressing bolts hole 22 for axis, the both ends of the connecting rod 21 respectively with the connector 19 and one of institute
It is hinged to state driving disc spacing pressing bolt hole 22, the ring flange 23 connecting with stretching-machine mobile terminal is additionally provided on the connector 19；
Under working condition, stretching-machine mobile terminal drives the driving disc spacing pressing 20 to revolve by the connector 19 and the connecting rod 21
Turn, and then the sun gear 10, the planetary gear and the rack gear 15 is driven to drive the rack gear linkage clamp 14 along described
The radially outward sliding of 7 axis of solar wheeling tooth wheel shaft mounting hole.
The experimental rig further includes sealing cover 24；
Institute corresponding to the sealing cover 24, the rear wall of the vertical side plate 2 and rear wall with the vertical side plate 2
The upper surface for stating fixed bottom plate 1 constitutes an opposite confined space, and the opposite confined space is wrapped with for insulation
Alumina silicate fiber felt, the opposite confined space is interior to be equipped with the heating device heated for test specimen 25, to realize room temperature to 1200
Double drawings test under DEG C different temperatures.
The heating device is the electromagnetic induction coil 26 being wrapped on test specimen, 26 external electromagnetic of electromagnetic induction coil
Heating controller 27.
The sliding slot group includes the long sliding slot 28 and short cunning positioned at 8 two sides of planetary gear mounting hole corresponding thereto
Slot 29, the long sliding slot 28 and the short groove 29 are T-slot；
One end far from 7 axis of solar wheeling tooth wheel shaft mounting hole of the long sliding slot 28 and the short groove 29 is prolonged
Extend to the end of the vertical side plate 2；
The rack gear linkage clamp 14 that extends perpendicularly to of the rack gear 15 is installed towards the solar wheeling tooth wheel shaft
The side wall of the side of 7 axis of hole, the rack gear linkage clamp 14 be equipped with extend to the rack gear 15 and with the long sliding slot 28
The long draw runner 30 to match and the short draw runner 31 to match with the short groove 29.
The driven gear 13 and 11 releasable connection of planetary gear shaft, by changing 13 number of teeth of driven gear,
The meshing relation for changing itself and the rack gear 15 can make rack gear linkage clamp 14 with the speed of 0.5-5 times of 12 revolving speed of driving gear
Degree movement.
The fixed bottom plate 1, the vertical side plate 2 and the solar wheeling tooth wheel shaft support base are structure as a whole；
The material of the experimental rig is depending on experimental condition.
In the present embodiment, the material of the fixed bottom plate 1, the vertical side plate 2 and the solar wheeling tooth wheel shaft support base
For H13 hot die steel, tested in large temperature range (room temperature is to 1200 DEG C) with meeting, to certain high-strength steel test specimens
When carrying out constant temperature pair drawing test at 400 DEG C or 800 DEG C, the rack gear linkage clamp 14 and the fixture cover board are processed with tungsten carbide
17, in the connecting rod 21, the driving disc spacing pressing 20, the solar wheeling tooth wheel shaft 9, the sun gear 10 and the planetary gear use
Carbon steel is process.
With the connecting rod initial position of the hinged driving disc spacing pressing bolt hole be above-mentioned driving disc spacing pressing bolt hole axis with
The line of the axis of the driving disc spacing pressing and the angle α of vertical direction meet:
0 α≤45 ° </n；
Wherein, n is the number of the driving disc spacing pressing bolt hole.
As shown in fig. 7, when carrying out biaxial tensile test, all rack gear linkage clamps 14 and test specimen 25 carry out grease lubrication or
Plating coating lubrication, then test specimen 25 (cross) is mounted in four rack gear linkage clamps 14, and fixture cover board 17 passes through spiral shell
Bolt and clip groove 16 are fixed, ensure that test specimen 25 fixedly positioning installation in rack gear linkage clamp 14.Connector 19 is moved by stretching-machine
Moved end drives and moves upwards, and then driving disc spacing pressing 20 is rotated along diagram direction, via sun gear 10 and planetary gear, planetary gear with
Transmission between rack gear 15 moves the rack gear linkage clamp 14 on four direction along diagram direction respectively, and then realizes to test specimen
25 biaxial tension.Here, pass is engaged with rack gear 15 by the number of teeth of stretching-machine load and driven gear 13, driven gear 13
System is, it can be achieved that double drawings under the conditions of large range of load ratio are tested.
As shown in figure 8, being added by diagram to 25 electromagnetic induction coil 26 of test specimen in biaxial tensile test under carrying out high temperature
Heat can also use other heating meanss, such as local ceramic heater etc., and sealing cover 24 seals, opposite confined space outsourcing
Be wrapped with the alumina silicate fiber felt for insulation, by stretching-machine load and the number of teeth of driven gear 13, driven gear 13 with
15 meshing relation of rack gear is, it can be achieved that double drawings under the conditions of large range of load ratio are tested.
In test, test force can be obtained by force snesor 18, and displacement is obtained by the contactless strain measurement system of DIC
It arrives.When being tested under different temperatures environmental condition, according to requirement of experiment, the material of the experimental rig is needed replacing, with
Reach gedanken experiment effect.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (8)
1. a kind of universal testing machine of gear structure formula becomes the double drawing experimental rigs of load ratio, which is characterized in that including fixed bottom
Plate and direct acting rotating device；
The fixed bottom plate is equipped with vertical side plate, solar wheeling tooth wheel shaft support base and multiple bottoms connecting with stretching-machine fixing end
Crab bolt hole, the vertical side plate are equipped with solar wheeling tooth wheel shaft mounting hole and with the axis of the solar wheeling tooth wheel shaft mounting hole
For four planetary gear mounting holes of axial cross distribution, the solar wheeling tooth wheel shaft support base is equipped with and the sun gear gear
The coaxial solar wheeling tooth wheel shaft connecting hole of shaft mounting hole, the solar wheeling tooth wheel shaft mounting hole are located at the front side of the vertical side plate
On wall；
Between the solar wheeling tooth wheel shaft mounting hole and the solar wheeling tooth wheel shaft connecting hole be equipped with solar wheeling tooth wheel shaft, it is described too
Sun gear is socketed on positive gear teeth wheel shaft, the planetary gear mounting hole is equipped with planetary gear, and the planetary gear includes row
Star gear shaft, one end of the planetary gear shaft are equipped with the driving gear engaged with the sun gear, the star gear shaft it is another
One end passes through the planetary gear mounting hole and connect with a driven gear, the planetary gear shaft and the planetary gear mounting hole
Rotation connection；
The rear wall of the vertical side plate is equipped with sliding slot group corresponding with the planetary gear mounting hole, sliding slot group edge
The solar wheeling tooth wheel shaft mounting hole axis radially extends, and the sliding slot group is equipped with rack gear linkage clamp, the rack gear connection
Dynamic fixture has the rack gear engaged with the driven gear, and the rack gear linkage clamp is far from the sliding slot group connected to it
The side wall of side has clip groove, and the clip groove is opened wide towards the side cell wall of the solar wheeling tooth wheel shaft mounting hole axis,
The clip groove is equipped with matched fixture cover board, and power is equipped between the fixture cover board and the clip groove and is sensed
Device；
The direct acting rotating device includes connector, driving disc spacing pressing and connecting rod；
The solar wheeling tooth wheel shaft passes through the solar wheeling tooth wheel shaft connecting hole and connect with the driving disc spacing pressing, the sun gear gear
Axis, the sun gear and the driving disc spacing pressing are coaxial, are evenly distributed on the driving disc spacing pressing using the axis of the driving disc spacing pressing as axis more
A driving disc spacing pressing bolt hole, the both ends of the connecting rod are hinged with the connector and one of them described driving disc spacing pressing bolt hole respectively, institute
State the ring flange for being additionally provided on connector and connecting with stretching-machine mobile terminal；
Under working condition, stretching-machine mobile terminal drives the active disc spins by the connector and the connecting rod, and then drives
Rack gear linkage clamp described in the sun gear, the planetary gear and the rack drives is along the solar wheeling tooth wheel shaft mounting hole
The radially outward sliding of axis；
The driven gear and the planetary gear shaft releasable connection, by changing the number of teeth of the driven gear, change its with
The meshing relation of the rack gear can make rack gear linkage clamp with the speed movement of 0.5-5 times of driving gear revolving speed.
2. experimental rig according to claim 1, which is characterized in that the experimental rig further includes sealing cover；
The fixed bottom corresponding to the sealing cover, the rear wall of the vertical side plate and rear wall with the vertical side plate
The upper surface of plate constitutes an opposite confined space, and the opposite confined space is wrapped with the alumina silicate fibre for insulation
Felt, the opposite interior heating device being equipped with for test specimen heating of confined space, to realize under room temperature to 1200 DEG C of different temperatures
Double drawings test.
3. experimental rig according to claim 2, which is characterized in that the heating device is the electromagnetism being wrapped on test specimen
Induction coil or the ceramic heater being adsorbed on test specimen.
4. experimental rig according to claim 1, which is characterized in that the bed bolt hole is located at the vertical side plate
The fixed bottom parts corresponding to front side wall.
5. experimental rig according to claim 1, which is characterized in that the sliding slot group includes positioned at institute corresponding thereto
The long sliding slot and short groove of planetary gear two sides of mounting hole are stated, the long sliding slot and the short groove are T-slot；
One end far from the solar wheeling tooth wheel shaft mounting hole axis of the long sliding slot and the short groove all extends to described
The end of vertical side plate；
The rack gear extends perpendicularly to the rack gear linkage clamp towards the solar wheeling tooth wheel shaft mounting hole axis
The side wall of side, the rack gear linkage clamp be equipped with extend to the rack gear and the long draw runner that matches with the long sliding slot and
The short draw runner to match with the short groove.
6. experimental rig according to claim 1, which is characterized in that the solar wheeling tooth wheel shaft support base includes left branching rod
With right strut, the upper end of the left branching rod and the right strut is connect with the solar wheeling tooth wheel shaft connecting hole respectively, the left side
The lower end of strut and the right strut is connect with the fixed bottom plate respectively, the left branching rod, the right strut and the fixation
Bottom plate constitutes a three-legged structure.
7. experimental rig according to claim 1, which is characterized in that the fixed bottom plate, the vertical side plate and described
Solar wheeling tooth wheel shaft support base is structure as a whole or is spliced after processing respectively；
The material of the experimental rig is depending on experimental condition.
8. experimental rig according to claim 1, which is characterized in that the hinged driving disc spacing pressing bolt hole with the connecting rod
Initial position be the axis of above-mentioned driving disc spacing pressing bolt hole and the axis of the driving disc spacing pressing line and vertical direction angle α it is full
Foot:
0 α≤360 ° </n；
Wherein, n is the number of the driving disc spacing pressing bolt hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710623586.0A CN107314935B (en) | 2017-07-27 | 2017-07-27 | A kind of double drawing experimental rigs of universal testing machine change load ratio of gear structure formula |
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| CN201710623586.0A CN107314935B (en) | 2017-07-27 | 2017-07-27 | A kind of double drawing experimental rigs of universal testing machine change load ratio of gear structure formula |
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| CN107314935A CN107314935A (en) | 2017-11-03 |
| CN107314935B true CN107314935B (en) | 2019-05-21 |
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| CN108037017B (en) * | 2017-12-11 | 2020-08-14 | 大连理工大学 | Gear lead screw type plate variable-proportion loading double-pull test system based on servo motor |
| CN109813598B (en) * | 2018-12-28 | 2021-06-22 | 大连理工大学 | Cam type biaxial tension experimental device |
| CN111751217B (en) * | 2020-06-29 | 2023-07-21 | 西安建筑科技大学 | Horizontal concrete uniaxial tension test device and application method thereof |
| CN113390717B (en) * | 2021-06-22 | 2022-12-30 | 安徽省水利水电工程检测有限公司 | Tensile detection device and detection method for rock-soil mass |
| CN117782832B (en) * | 2023-11-20 | 2024-07-12 | 宜兴市中辉模具制造有限公司 | Mechanical equipment panel tensile properties test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0635782B2 (en) * | 1987-09-25 | 1994-05-11 | 重十史 冨永 | Moving wall direction change device |
| SU1748075A2 (en) * | 1990-07-09 | 1992-07-15 | Владимирский политехнический институт | Rig for testing devices for action of variable accelerations |
| FR2674041B1 (en) * | 1991-03-15 | 1993-12-10 | Wabco Westinghouse | CENTER POINT RETRIEVAL DEVICE. |
| DE102011113540B4 (en) * | 2011-09-15 | 2014-06-18 | Bayern-Chemie Gesellschaft Für Flugchemische Antriebe Mbh | Device for determining the biaxial strain characteristics of a sample |
| JP6254022B2 (en) * | 2014-03-07 | 2017-12-27 | 株式会社日立製作所 | Test equipment |
| JP6172041B2 (en) * | 2014-05-13 | 2017-08-02 | 株式会社島津製作所 | Material testing machine |
| CN204666451U (en) * | 2015-06-07 | 2015-09-23 | 武汉磐索地勘科技有限公司 | Electric vane boxshear apparatus |
| GB201514084D0 (en) * | 2015-08-10 | 2015-09-23 | Imp Innovations Ltd | Planar test system |
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